ES2557032T3 - Aparato grapador quirúrgico - Google Patents
Aparato grapador quirúrgico Download PDFInfo
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- ES2557032T3 ES2557032T3 ES14179366.1T ES14179366T ES2557032T3 ES 2557032 T3 ES2557032 T3 ES 2557032T3 ES 14179366 T ES14179366 T ES 14179366T ES 2557032 T3 ES2557032 T3 ES 2557032T3
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Abstract
Un aparato grapador quirúrgico (10) que comprende: a) un conjunto de mango (12) que incluye un mango móvil (24), pudiendo el mango móvil moverse a lo largo de una carrera de actuación; b) un cuerpo alargado (14) que se extiende distalmente desde el conjunto de mango y que define un eje longitudinal, teniendo el cuerpo alargado un extremo distal; c) un árbol de actuación (46) soportado al menos en parte dentro del conjunto de mango y montado para tener un movimiento longitudinal en respuesta a la manipulación del mango móvil; caracterizado por que dicho extremo distal de dicho cuerpo alargado (14) está adaptado para acoplarse en forma liberable a unidades de carga desechables (16) tanto de tipo articulante como no articulante, y dicho aparato grapador quirúrgico (10) comprende además: d) un mecanismo de articulación (120) que incluye una palanca de articulación (30) montada adyacente al conjunto de mango y a una barra de articulación (123), la barra de articulación tiene un extremo proximal conectado operativamente a la palanca de articulación y un extremo distal situado adyacente al extremo distal del cuerpo alargado; y e) un mecanismo sensor (176) situado dentro del cuerpo alargado y asociado operativamente con el mecanismo de articulación, el mecanismo sensor incluye un miembro sensor para percibir el tipo de unidad de carga desechable asegurada al cuerpo alargado.
Description
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DESCRIPCION
Aparato grapador quirurgico Antecedentes
1. Campo tecnico
Esta solicitud se refiere a un aparato grapador quirurgico y, mas particularmente, a un mecanismo de articulacion para su uso con un aparato grapador quirurgico endoscopico para aplicar secuencialmente una pluralidad de sujetadores quirurgicos a tejido corporal y opcionalmente practicar una incision en el tejido sujeto.
2. Antecedentes de la tecnica relacionada
Son bien conocidos en la tecnica dispositivos quirurgicos en lo que primero se agarra o sujeta tejido entre una estructura de mordazas opuestas y luego se une dicho tejido por medio de sujetadores quirurgicos. En algunos instrumentos esta prevista una cuchilla para cortar el tejido que ha sido unido por los sujetadores. Los sujetadores tienen tfpicamente la forma de grapas quirurgicas, pero se pueden utilizar tambien sujetadores de polfmeros de dos partes.
Los instrumentos para este fin pueden incluir dos miembros alargados que se usan respectivamente para capturar o sujetar tejido. Tfpicamente, uno de los miembros lleva un cartucho de grapas que aloja una pluralidad de grapas dispuestas en al menos dos filas laterales, mientras que el otro miembro tiene un yunque que define una superficie para formar las patas de las grapas cuando estas son hincadas desde el cartucho de grapas. En general, la operacion de grapado es efectuada por barras de leva que se desplazan longitudinalmente a traves del cartucho de grapas, actuando las barras de leva sobre empujadores de grapas para expulsar secuencialmente las grapas del cartucho de grapas. Una cuchilla puede desplazarse entre las filas de grapas para cortar y/o abrir longitudinalmente el tejido grapado entre las filas de grapas. Instrumentos de esta clase se describen, por ejemplo, en las patentes US No. 3,079,606 y No. 3,490,675.
Una grapadora posterior descrita en la patente US No. 3,499,591 aplica una doble fila de grapas a cada lado de la incision. Esto se realiza habilitando una unidad de carga desechable en la que un miembro de leva se mueve a traves de un trayecto de grna alargado entre dos juegos de surcos escalonados portadores de grapas. Unos miembros de hincado de grapas estan situados dentro de los surcos y posicionados de tal manera que sean contactados por el miembro de leva longitudinalmente movil para efectuar la expulsion de las grapas desde el cartucho de grapas de la unidad de carga desechable. Otros ejemplos de tales grapadoras se describen en las patentes US Nos. 4,429,695 y 5,065,929.
Cada uno de los instrumentos descritos anteriormente en las patentes anteriores estaban disenados para su uso en intervenciones quirurgicas convencionales, en las que los cirujanos tienen acceso manual directo al sitio de la operacion. Sin embargo, en intervenciones endoscopicas o laparoscopicas, la cirugfa se realiza a traves de una pequena incision o traves de una estrecha canula inserta a traves de pequenas heridas de entrada practicadas en la piel. Para abordar las necesidades espedficas de las intervenciones quirurgicas endoscopicas y/o laparoscopicas, se han desarrollado dispositivos grapadores quirurgicos endoscopicos y estos se describen, por ejemplo, en las patentes US Nos. 5,040,715 (Green et al.); 5,307,976 (Olson et al.); 5,312,023 (Green et al.); 5,318,221 (Green et al.); 5,326,013 (Green et al.); y 5,332,142 (Robinson et al.). El documento US-A-5535937 describe un aparato grapador quirurgico segun el preambulo de la reivindicacion 1 de la presente solicitud, que tiene un circuito electrico contenido en el cartucho de grapas para identificar el tipo o el estado del cartucho.
U.S. Surgical, la cesionaria de la presente solicitud, ha fabricado y comercializado instrumentos grapadores endoscopicos, tales como los instrumentos Multifire ENDO GIA* 30 y Multifire ENDO GIA* 60, durante varios anos. Estos instrumentos han proporcionado importantes beneficios clmicos. No obstante, son posibles mejoras, por ejemplo reduciendo el coste y la complejidad de fabricacion.
Los actuales dispositivos grapadores lineales laparoscopicos estan configurados para funcionar con unidades de carga desechables (U.S. Surgical) y cartuchos de grapas (Ethicon) de solamente un tamano. Por ejemplo, estan disponibles actualmente grapadoras lineales individuales para aplicar filas paralelas de grapas que miden 30 mm, 45 mm y 60 mm de longitud. Asf, durante una operacion normal, puede requerirse que un cirujano utilice varios instrumentos grapadores diferentes para realizar una sola intervencion quirurgica laparoscopica. Tales practicas aumentan el tiempo, la complejidad y los costes totales asociados con las intervenciones quirurgicas laparoscopicas. Ademas, son mayores los costes para disenar y fabricar multiples tamanos de grapadoras, en contraste con la creacion de una sola grapadora multiuso.
Sena extremadamente beneficioso proporcionar un dispositivo quirurgico para uso durante intervenciones quirurgicas laparoscopicas y/o endoscopicas que pueda emplearse con varias unidades de carga desechables de diferentes tamanos para reducir los costes totales asociados con tales intervenciones. Sena tambien particularmente beneficioso que el dispositivo pudiera realizar multiples tareas, utilizando unidades de carga desechables de tamano variable y finalidad variable, tal como, por ejemplo, para grapar, pinzar, cortar y/o articular.
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Al hacer mejoras o modificaciones en los instrumentos actuales, sena altamente deseable no sacrificar ninguno de los importantes beneficios de los instrumentos MULTIFIRE ENDO GIA* 30 y 60 en comparacion con otros productos comercialmente disponibles, por ejemplo los instrumentos grapadores endoscopicos fabricados y comercializados por Ethicon, Inc. Por ejemplo, cualquier mejora debera proporcionar ventajosamente una hoja de cuchilla nueva para cada disparo del instrumento y garantizar que la unidad de carga desechable sea retenida con seguridad en el instrumento grapador, a menos y hasta que el equipo operador decida retirarla. Estas ventajas se han encontrado historicamente en los instrumentos de U.S. Surgical, pero no en los instrumentos de Ethicon.
Sumario
La presente invencion proporciona un aparato grapador quirurgico como se define en las reivindicaciones adjuntas que comprende:
a) un conjunto de mango que incluye un mango movil, el mango movil puede moverse a lo largo de una carrera de actuacion
b) un cuerpo alargado que se extiende distalmente desde el conjunto de mango y define un eje longitudinal, el cuerpo alargado tiene un extremo distal;
c) un arbol de actuacion soportado al menos en parte dentro del conjunto de mango y montado para tener un movimiento longitudinal en respuesta a la manipulacion del mango movil;
caracterizado por que dicho extremo distal de dicho cuerpo alargado esta adaptado para acoplarse de forma liberable a unidades de carga desechables tanto de tipo articulante como no articulante, y dicho aparato grapador quirurgico comprende ademas:
d) un mecanismo de articulacion que incluye una palanca de articulacion montada adyacente al conjunto de mango y a una barra de articulacion, la barra de articulacion tiene un extremo proximal conectado operativamente a la palanca de articulacion y un extremo distal situado adyacente al extremo distal del cuerpo alargado; y
e) un mecanismo sensor situado dentro del cuerpo alargado y asociado operativamente con el mecanismo de articulacion, el mecanismo sensor incluye un miembro sensor para percibir el tipo de unidad de carga desechable asegurada al cuerpo alargado.
Lo adecuado es que el miembro sensor este situado de forma movible dentro del cuerpo alargado, siendo el miembro sensor movible a una primera posicion en respuesta al acopamiento de una unidad de carga desechable no articulante con el cuerpo alargado y a una segunda posicion en respuesta al acoplamiento de una unidad de carga desechable articulante con el cuerpo alargado.
Lo adecuado es que en la primera posicion, el mecanismo sensor este acoplado operativamente con el mecanismo articulante para impedir el movimiento de la palanca de articulacion. En estas realizaciones, lo adecuado es que el mecanismo de articulacion incluya un miembro de leva que tenga una ranura de leva escalonada, y que el miembro de leva este situado operativamente entre la palanca de articulacion y la barra de articulacion.
Es adecuado que el mecanismo sensor incluya un tubo sensor posicionado dentro del cuerpo alargado para acoplarse a la unidad de carga desechable asegurada al cuerpo alargado. Un cilindro sensor conectado al tubo sensor se acopla con un anillo de bloqueo que tiene una porcion de patilla configurada para acoplarse al mecanismo de articulacion en una primera posicion para impedir el movimiento de la palanca de articulacion. El anillo de bloqueo es movido por el cilindro sensor cuando una unidad de carga desechable articulante esta asegurada al cuerpo alargado del aparato grapador hasta una segunda posicion para desacoplar la porcion de patilla del mecanismo de articulacion a fin de permitir el movimiento de la palanca de articulacion. En contraste, una unidad de carga desechable no articulante no desbloqueara la palanca de articulacion.
Breve descripcion de los dibujos
Se describen aqrn diversas realizaciones preferidas con referencia a los dibujos, en los que:
La figura 1 es una vista en perspectiva de una realizacion preferida del aparato grapador quirurgico descrito en el presente documento;
La figura 2 es una vista en planta desde arriba del aparato quirurgico mostrado en la figura 1;
La figura 3 es una vista lateral del aparato quirurgico mostrado en la figura 1;
La figura 4 es un vista en perspectiva con partes separadas del conjunto de mango del aparato quirurgico mostrado en la figura 1;
La figura 5 es una vista en seccion transversal de una porcion del mecanismo de bloque antidisparo mostrado en la figura 4;
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La figura 6 es una vista en perspectiva de la placa de corredera del mecanismo de embrague antirreversion del aparato quirurgico;
La figura 7 es una vista en perspectiva agrandada del mecanismo de embrague antirreversion mostrado en la figura 1;
La figura 8 es una vista lateral en seccion transversal del aparato grapador quirurgico mostrado en la figura 1 en la posicion no actuada con la unidad de carga desechable retirada;
La figura 9 es una vista en perspectiva con partes separadas del miembro de rotacion, el mecanismo de articulacion y el cuerpo alargado del aparato grapador quirurgico mostrado en la figura 1;
La figura 10 es una vista ampliada del area de detalle indicada mostrada en la figura 8;
La figura 10a es una vista en perspectiva del miembro de traslacion del mecanismo articulante y del extremo proximal del cuerpo alargado del aparato grapador quirurgico mostrado en la figura 1;
La figura 10b es una vista ampliada en seccion transversal del area de detalle indicada de la figura 8;
La figura 10c es una vista en seccion transversal a lo largo de la lmea de seccion 10c-10c de la figura 8;
La figura 11 es una vista en perspectiva del miembro de leva del mecanismo de articulacion del aparato grapador quirurgico mostrado en la figura 1;
La figura 12 es una vista en planta desde arriba del miembro de leva del mecanismo de articulacion del aparato grapador quirurgico mostrado en la figura 1;
La figura 12a es una vista en perspectiva de una unidad de carga desechable no articulante utilizable con el aparato grapador quirurgico mostrado en la figura 1;
La figura 12b es una vista en perspectiva de la unidad de carga desechable articulante preferida del aparato grapador quirurgico mostrado en la figura 1;
La figura 13 es una vista en seccion transversal tomada a lo largo de la lmea de seccion 13-13 de la figura 10;
La figura 14 es una vista en seccion transversal tomada a lo largo de la lmea de seccion 14-14 de la figura 10;
La figura 15 es una vista en seccion transversal tomada a lo largo de la lmea de seccion 15-15 de la figura 10;
La figura 16 es una vista ampliada del area de detalle indicada mostrada en la figura 8;
La figura 17 es una vista lateral en perspectiva de la placa de bloqueo del aparato grapador quirurgico mostrado en la figura 1;
La figura 18 es una vista en perspectiva desde arriba de la placa de bloqueo del aparato grapador quirurgico mostrado en la figura 1;
La figura 19 es una vista en perspectiva de una unidad de carga desechable utilizable con el aparato grapador quirurgico de la figura 1;
La figura 20 es otra vista en perspectiva de una unidad de carga desechable utilizable con el aparato grapador quirurgico de la figura 1;
La figura 21 es una vista en perspectiva del conjunto de utillaje del aparato grapador quirurgico de la figura 1 con partes separadas;
La figura 22 es una vista en perspectiva ampliada del extremo distal del conjunto de yunque que muestra una pluralidad de cavidades deformadoras de grapas;
La figura 23 es una vista en perspectiva ampliada del extremo distal del cartucho de grapas del aparato grapador quirurgico mostrado en la figura 1;
La figura 24 es una vista lateral en seccion transversal tomada a lo largo de la lmea de seccion 24-24 de la figura 23;
La figura 25 es una vista en perspectiva desde abajo del cartucho de grapas mostrado en la figura 21;
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La figura 26 es una vista en perspectiva ampliada del patm de actuacion, los empujadores y los sujetadores mostrados en la figura 21;
La figura 27 es una vista en perspectiva ampliada con partes separadas de la porcion de alojamiento proximal y del conjunto de montaje de la unidad de carga desechable mostrada en la figura 19;
La figura 28 es una vista en perspectiva ampliada del conjunto de montaje de la unidad de carga desechable mostrada en la figura 19, montado en una porcion extrema distal de la porcion de alojamiento proximal;
La figura 29 es una vista en perspectiva ampliada de la porcion de alojamiento proximal y del conjunto de montaje de la unidad de carga desechable mostrada en la figura 19 con la mitad superior del alojamiento retirada;
La figura 30 es una vista en perspectiva de la porcion de alojamiento proximal y del conjunto de montaje de la unidad de carga desechable mostrada en la figura 19 con la mitad superior del alojamiento retirada;
La figura 31 es una vista en perspectiva con partes separadas del conjunto de accionamiento axial;
La figura 32 es una vista en perspectiva ampliada del conjunto de accionamiento axial mostrado en la figura 31;
La figura 33 es una vista en perspectiva ampliada del extremo proximal del conjunto de accionamiento axial mostrado en la figura 31, incluyendo el dispositivo de bloqueo;
La figura 34 es una vista en perspectiva ampliada del extremo distal del conjunto de accionamiento axial mostrado en la figura 31;
La figura 35 es una vista en perspectiva ampliada del extremo distal del cuerpo alargado del aparato grapador mostrado en la figura 1;
La figura 36 es una vista en perspectiva ampliada del dispositivo de bloqueo mostrado en la figura 33;
La figura 37 es una vista en perspectiva ampliada de una mitad inferior del alojamiento de la porcion de alojamiento proximal de la unidad de carga desechable mostrada en la figura 27;
La figura 38 es una vista lateral en seccion transversal de la unidad de carga desechable mostrada en la figura 20;
La figura 39 es una vista ampliada del area de detalle indicada mostrada en la figura 38;
La figura 40 es una vista en perspectiva del aparato grapador quirurgico mostrado en la figura 1 con la unidad de carga desechable de la figura 19 desprendida del cuerpo alargado;
La figura 41 es una vista en perspectiva ampliada de la unidad de carga desechable de la figura 19 durante la fijacion al cuerpo alargado del aparato grapador quirurgico mostrado en la figura 1;
La figura 42 es otra vista en perspectiva ampliada de la unidad de carga desechable de la figura 19 durante la fijacion al cuerpo alargado del aparato grapador quirurgico mostrado en la figura 1;
La figura 43 es una vista en seccion transversal tomada a lo largo de la lmea de seccion 43-43 de la figura 41;
La figura 43a es una vista lateral en seccion transversal del mando de rotacion, del mecanismo de articulacion y del mecanismo sensor durante la insercion de una unidad de carga desechable en el cuerpo alargado del aparato grapador quirurgico;
La figura 44 es una vista en seccion transversal tomada a lo largo de la lmea de seccion 44-44 de la figura 42;
La figura 45 es una vista lateral en seccion transversal del extremo distal de la unidad de carga desechable de la figura 1 con tejido posicionado entre los conjuntos de yunque y de abrazadera;
La figura 46 es una vista lateral en seccion transversal del conjunto de mango con el mango movil en una posicion actuada;
La figura 47 es una vista ampliada del area de detalle indicada mostrada en la figura 46;
La figura 48 es una vista en seccion transversal del extremo proximal de la unidad de carga desechable de la figura 19 y del extremo distal del cuerpo alargado del aparato grapador quirurgico mostrado en la figura 1 con la varilla de control en una posicion parcialmente avanzada;
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La figura 49 es una vista en seccion transversal del conjunto de utillaje del aparato grapador quirurgico mostrado en la figura 1 posicionado alrededor de tejido en la posicion sujeta;
La figura 50 es una vista en seccion transversal del conjunto de mango del aparato grapador de la figura 1 durante la carrera de sujecion del aparato;
La figura 51 es una vista lateral en seccion transversal del extremo distal del conjunto de utillaje del aparato grapador mostrado en la figura 1 durante el disparo del aparato;
La figura 52 es una vista lateral en seccion transversal del extremo distal del conjunto de utillaje del aparato grapador mostrado en la figura 1 despues del disparo del aparato;
La figura 53 es una vista lateral en seccion transversal del conjunto de mango del aparato durante la retraccion del arbol de actuacion;
La figura 54 es una vista lateral en seccion transversal del conjunto de mango del aparato grapador durante la actuacion del boton de liberacion de emergencia;
La figura 55 es una vista en planta desde arriba del mecanismo de articulacion del aparato grapador quirurgico;
La figura 56 es una vista lateral en seccion transversal del mecanismo de articulacion y del miembro de rotacion del aparato grapador quirurgico mostrado en la figura 1;
La figura 57 es una vista en planta desde arriba del extremo distal del cuerpo alargado, del conjunto de montaje y del extremo proximal del conjunto de utillaje durante la articulacion del aparato grapador;
La figura 58 es una vista en perspectiva del aparato grapador quirurgico durante la articulacion del conjunto de utillaje;
La figura 59 es una vista en perspectiva del aparato grapador quirurgico durante la articulacion y rotacion del conjunto de utillaje;
La figura 60 es una vista en planta desde arriba del extremo distal de la unidad de carga desechable inmediatamente antes de la articulacion;
La figura 61 es una vista en planta desde arriba del extremo distal del cuerpo alargado, del conjunto de montaje y del extremo proximal del conjunto de utiles durante la articulacion del aparato grapador;
La figura 62 es una vista en seccion transversal parcial de una porcion de la unidad de carga desechable durante la retraccion del dispositivo de bloqueo; y
La figura 63 es una vista en seccion transversal parcial de una porcion de la unidad de carga desechable con el dispositivo de bloqueo en la posicion bloqueada.
Descripcion detallada de realizaciones preferidas
Se describiran ahora en detalle realizaciones preferidas del aparato grapador quirurgico endoscopico descrito en el presente documento con referencia a los dibujos, en los cuales los numeros de referencia iguales designan elementos iguales o correspondientes en cada una de las diversas vistas.
En los dibujos y en las descripcion que sigue, el termino "proximal", como es tradicional, se referira al extremo del aparato grapador que esta mas proximo al cirujano, mientras que el termino "distal" se referira al extremo del aparato que esta mas alejado del cirujano.
Las figuras 1 a 3 ilustran una realizacion del aparato grapador quirurgico descrito en el presente documento mostrado en general como 10. Brevemente, el aparato grapador quirurgico 10 incluye un conjunto de mango 12 y un cuerpo alargado 14. Una unidad de carga desechable o DLU 16 esta asegurada de forma liberable a un extremo distal del cuerpo alargado 14. La unidad de carga desechable 16 incluye un conjunto de utillaje 17 que tiene un conjunto de cartucho 18 que aloja una pluralidad de grapas quirurgicas y un conjunto de yunque 20 asegurado de forma movil con relacion al conjunto de cartucho 18. La unidad de carga desechable 16 esta configurada para aplicar filas lineales de grapas que miden de aproximadamente 30 mm a aproximadamente 60 mm de longitud. Se contemplan tambien unidades de carga desechables que tengan filas lineales de grapas de otras longitudes, por ejemplo 45 mm. El conjunto de mango 12 incluye un miembro de mango estacionario 22, un miembro de mango movil 24 y una porcion de tambor 26. Un miembro giratorio 28 esta montado preferiblemente en el extremo delantero de la porcion de tambor 26 para facilitar la rotacion del cuerpo alargado 14 con respecto al conjunto de mango 12. Una palanca de articulacion 30 esta montada tambien preferiblemente en el extremo delantero de la porcion de tambor 26 junto a un mando giratorio 28 para facilitar la articulacion del conjunto de utillaje 17. Un par de mandos de retraccion 32 estan posicionados en forma movil a lo largo de la porcion de tambor 26 para devolver el aparato
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grapador quirurgico 10 a una posicion re^da, tal como se describira con detalle mas adelante.
Haciendo referencia a la figura 4, el conjunto de mango 12 incluye un alojamiento 36 que esta constituido preferiblemente por semisecciones de alojamiento moldeadas 36a y 36b que forman el miembro de mango estacionario 22 y la porcion de tambor 26 del conjunto de mango 12 (vease la figura 1). El miembro de mango movil 24 esta soportado de forma pivotable entre las semisecciones de alojamiento 36a y 36b alrededor de una espiga pivote 38. Un miembro de solicitacion 40, que es preferiblemente un muelle de torsion, solicita al mango movil 24 en sentido de alejarlo del mango estacionario 22. Un arbol de actuacion 46 esta soportado dentro de la porcion de tambor 26 del alojamiento 36 e incluye una cremallera dentada 48. Un trinquete de accionamiento 42 que tiene un dedo 43 de engrane con la cremallera, dotado de alas 43a y 43a que se extienden lateralmente, esta montado de forma pivotable en un extremo del mango movil 24 alrededor de una espiga pivote 44. Un miembro de solicitacion 50, que es preferiblemente tambien un muelle de torsion, esta posicionado para empujar al dedo de engrane 43 del trinquete de accionamiento 42 hacia la cremallera dentada 48 del arbol de actuacion 46. El mango movil 24 es pivotable para mover el dedo de engrane 43 del trinquete de accionamiento 42 hacia una posicion de contacto con la cremallera dentada 48 del arbol de actuacion 46 para hacer avanzar dicho arbol linealmente en la direccion distal. El extremo delantero del arbol de actuacion 46 recibe de forma giratoria el extremo proximal 49 de una varilla de control 52 de tal manera que el avance lineal del arbol de actuacion 46 provoca un avance lineal correspondiente de la varilla de control 52. Un trinquete de bloqueo 54 que tiene un miembro 55 de engrane con la cremallera esta montado de forma pivotable dentro del alojamiento 36 alrededor de una espiga pivote 57 y es solicitado hacia la cremallera dentada 48 por un miembro de solicitacion 56 que es preferiblemente tambien un muelle de torsion. El miembro de engrane 55 del trinquete de bloqueo 54 es movil en el sentido de engranarlo con la cremallera dentada 48 para retener el arbol de actuacion 46 en una posicion longitudinalmente fija.
Un mecanismo de retraccion 58, que incluye un par de mandos retractores 32 (vease la figura 1), puede estar conectado al extremo proximal del arbol de actuacion 46 por una varilla de acoplamiento 60. La varilla de acoplamiento 60 incluye porciones de engrane derecha e izquierda 62a y 62b para recibir los mandos retractores 32 y una porcion central 62c que esta dimensionada y configurada para trasladarse dentro de un par de ranuras longitudinales 34a formadas en el arbol de actuacion 46 junto al extremo proximal del mismo. Una placa de liberacion 64 esta operativamente asociada con el arbol de actuacion 46 y montada para moverse con respecto al mismo en respuesta a la manipulacion de los mandos retractores 32. Un par de pasadores espaciados 66 se extienden hacia fuera desde una cara lateral del arbol de actuacion 46 para encajar en un par de ranuras de leva anguladas correspondientes 68 formadas en la placa de liberacion 64. Al producirse un movimiento de retroceso de los mandos retractores 32, los pasadores 66 pueden liberar la placa 64 hacia abajo con respecto al arbol de actuacion 46 y con respecto a la cremallera dentada 48 de tal manera que la porcion inferior de la placa de liberacion 64 se extienda por debajo de la cremallera dentada 48 para desacoplar el dedo de engrane 43 del trinquete de accionamiento 42 de la cremallera dentada 48. Una ranura transversal 70 esta formada en el extremo proximal de la placa de liberacion 64 para dar acomodo a la porcion central 62c de la varilla de acoplamiento 60, y unas ranuras alargadas 34 (vease la figura 1) estan definidas en la seccion de tambor 26 del conjunto de mango 12 para absorber la traslacion longitudinal de la varilla de acoplamiento 60 cuando se tira de los mandos de retraccion 32 hacia atras para retraer el arbol de actuacion 46 y retraer asf la varilla de control 52 hacia atras. El arbol de actuacion 46 es solicitado proximalmente por un muelle 72 que esta asegurado en un extremo a la porcion de varilla de acoplamiento 62 a traves de un conector 74 y en el otro extremo a un teton 76 del arbol de actuacion 46.
Haciendo referencia tambien a la figura 5, el conjunto de mango 12 incluye un conjunto 80 de bloqueo antidisparo que incluye un embolo buzo 82 y un miembro de bloqueo pivotable 83. El embolo buzo 82 esta solicitado hacia una posicion central por muelles de solicitacion 84 e incluye superficies de leva estrechadas anulares 85. Cada extremo del embolo buzo 82 se extiende a traves del alojamiento 36 (vease la figura 1) junto a un extremo superior del mango estacionario 22. El miembro de bloqueo pivotable 83 esta fijado de manera pivotable en su extremo distal entre las semisecciones de alojamiento 36a y 36b alrededor de una espiga pivote 86 e incluye una superficie de bloqueo 88 y una prolongacion proximal 90 que tiene una ranura 89 formada en ella. El miembro de bloqueo 83 esta solicitado por un muelle 92 en sentido levogiro (segun se ve en la figura 4) para mover la superficie de bloqueo 88 hasta una posicion adecuada para apoyarse en el extremo distal del arbol de actuacion 46 e impedir el avance de este arbol 46 y el subsiguiente disparo del aparato grapador 10. Una superficie de leva estrechada anular 85 esta posicionada para extenderse hacia dentro de la ranura estrechada 89 de la prolongacion proximal 90. Un movimiento lateral del embolo buzo 82 en una u otra direccion en contra de la solicitacion de uno u otro muelle 84 mueve la superficie de leva estrechada 85 para acoplarla con las paredes laterales de la ranura estrechada 89 a fin de pivotar el miembro de bloqueo 83 en sentido dextrogiro alrededor de la espiga pivote 86, segun se ve en la figura 4, para mover la superficie de bloqueo 89 hasta una posicion adecuada para permitir el avance del arbol de actuacion 46 y, por tanto, el disparo del aparato grapador 10. La superficie de bloqueo 88 esta retenida en esta posicion por unos rebajos 87 que reciben la punta estrechada de la superficie de leva 85 para bloquear el miembro 83 en una posicion levogira. Se ilustrara seguidamente con mas detalle el funcionamiento del conjunto 80 de bloqueo antidisparo.
Haciendo referencia a las figuras 4, 6 y 7, el mecanismo de mango 12 incluye tambien un mecanismo de embrague antirreversion que incluye una primera rueda dentada 94 montada a rotacion sobre un primer arbol 96 y una segunda rueda dentada 98 montada sobre un segundo arbol 100, y una placa de corredera 102 (figuras 6 y 7) montada a deslizamiento dentro del alojamiento 36. La placa de corredera 102 incluye una ranura alargada 104
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dimensionada y configurada para ser posicionada de forma deslizable alrededor de la espiga pivote 57 del trinquete de bloqueo, una placa de engrane 106 configurada para engranar con los dientes de la segunda rueda dentada 98 y una superficie de leva 108. En la posicion retrafda, la superficie de leva 108 de la placa de corredera 102 engrana con el trinquete de bloqueo 54 para impedir que este trinquete de bloqueo 54 engrane con la cremallera dentada 48. El arbol de actuacion 46 incluye un juego distal de dientes de engrane 110a espaciado de un juego proximal de dientes de engrane 110b posicionado para engranar con la primera rueda dentada o engranaje 94 del arbol de actuacion 46 durante el movimiento de dicho arbol de actuacion 46. Cuando se hace avanzar el arbol de actuacion 46 pivotando el mango movil 24 alrededor de la espiga pivote 38, los dientes de engrane distales 110a del arbol de actuacion 46 engranan con la primera rueda dentada o engranaje 94 y el primer arbol 96 y giran con estos. El primer arbol 96 esta conectado al segundo arbol 100 por un conjunto de embrague de muelle de tal manera que la rotacion del primer arbol 96 causara una rotacion correspondiente del segundo arbol 100. La rotacion del segundo arbol 100 provoca una rotacion correspondiente de la segunda rueda dentada o engranaje 98 engranada con la placa de engrane 106 de la placa de corredera 102 para producir un avance lineal de dicha placa de corredera 102. El avance lineal de la placa de corredera 102 se limita a la longitud de la ranura alargada 104. Cuando la placa de corredera ha sido hecha avanzar en la longitud de la ranura 104, la superficie de leva 108 libera el trinquete de bloqueo 54 de tal manera que este se mueve en el sentido de engranar con la cremallera dentada 48. El avance continuado del arbol de actuacion 46 mueve finalmente los dientes de engrane 110b hacia su engrane con la placa de engrane 106. Sin embargo, dado que la placa de corredera 102 esta longitudinalmente fija en posicion, el embrague de muelle es forzado a soltarse de tal manera que se permita un avance distal continuado del arbol de actuacion 46.
Cuando el arbol de actuacion 46 es devuelto a la posicion retrafda (tirando proximalmente de los mandos de retraccion 34, segun se ha discutido mas arriba), los dientes de engrane 110b engranan con la primera rueda dentada o engranaje 94 para hacer girar la segunda rueda dentada o engranaje 98 en direccion contraria a fin de retraer proximalmente el miembro de corredera 102 dentro del alojamiento 36. El movimiento proximal del miembro de corredera 102 hace que avance la superficie de leva 108 hacia dentro del trinquete de bloqueo 54 antes del engrane entre el trinquete de bloqueo 54 y la cremallera dentada 48 para empujar a dicho trinquete de bloque 54 hasta una posicion adecuada para permitir la retraccion del arbol de actuacion 46.
Haciendo referencia nuevamente a la figura 4, el conjunto de mango 12 puede incluir un boton de retorno de emergencia 112 montado de forma pivotante dentro del alojamiento 36 alrededor de un miembro de pivote 114 soportado entre las semisecciones 36a y 36b del alojamiento. El boton de retorno 112 incluye un miembro externamente posicionado 116 colocado en el extremo proximal de la porcion de tambor 26. El miembro 116 es movil alrededor del miembro de pivote 114 para acoplarse con el extremo proximal del trinquete de bloqueo 54 a fin de empujar al miembro 55 de engrane con la cremallera para que deje de estar engranado con la cremallera dentada 48 y permita la retraccion del arbol de actuacion 46 durante la carrera de disparo del aparato grapador 10. Como se ha discutido mas arriba, durante la porcion de avance de aprisionamiento del arbol de actuacion 46, la placa de corredera 102 desacopla el trinquete 54 de la cremallera 48 y, por tanto, no es necesaria la actuacion del boton de retorno 112 para retraer el arbol de actuacion 46.
La figura 8 ilustra la interconexion del cuerpo alargado 14 y del conjunto de mango 12. Haciendo referencia a las figuras 8 a 10, el alojamiento 36 incluye un canal anular 117 configurado para recibir un nervio anular 118 formado en el extremo proximal del miembro de rotacion 28, que se ha formado preferiblemente a partir de semisecciones moldeadas 28a y 28b. El canal 117 y el nervio 118 anulares permiten un movimiento relativo entre el miembro de rotacion 28 y el alojamiento 36. El cuerpo alargado 14 incluye un alojamiento interior 122 y una envolvente exterior 124. El alojamiento interior 122 esta dimensionado para ser recibido dentro de la envolvente exterior 124 e incluye un anima interna 126 (figura 8) que se extiende a su traves y esta dimensionada para recibir a deslizamiento una primera barra de articulacion 123 y la varilla de control 52. El extremo proximal del alojamiento 122 y de la envolvente 124 incluyen cada uno un par de aberturas diametralmente opuestas 130 y 128, respectivamente, que estan dimensionadas para recibir salientes radiales 132 formados en el extremo distal del miembro de rotacion 28. Los salientes 132 y las aberturas 128 y 130 aseguran fijamente el miembro de rotacion 28 y el cuerpo alargado 14 uno con relacion a otro, ambos en sentido longitudinal y en forma rotativa. La rotacion del mando de rotacion 28 con respecto al conjunto de mango 12 da asf como resultado una rotacion correspondiente del miembro alargado 14 con respecto al conjunto de mango 12.
Un mecanismo de articulacion 120 esta soportado por el miembro rotativo 28 e incluye la palanca de articulacion 30, un miembro de leva 136, un miembro de traslacion 138 y la primera barra de articulacion 123 (figura 9). La palanca de articulacion 30 esta montada de forma pivotable alrededor de un miembro de pivote 140 que se extiende hacia fuera desde el miembro de rotacion 28 y que esta formado preferiblemente en una sola pieza con este. Un saliente 142 se extiende hacia abajo desde la palanca de articulacion 30 para acoplarse con el miembro de leva 136.
Haciendo referencia temporalmente a las figuras 11 y 12, el miembro de leva 136 incluye un alojamiento 144 que tiene una ranura alargada 146 que se extiende a traves de un lado del mismo y una superficie de leva escalonada 148 formada en el otro lado del mismo. Cada escalon de la superficie de leva 148 corresponde a un grado particular de articulacion del aparato grapador 10. Aunque se ilustran cinco escalones, pueden disponerse menos o mas escalones. La ranura alargada 146 esta configurada para recibir el saliente 142 formado en la palanca de articulacion 30. El alojamiento 144 incluye una porcion escalonada distal 150 y una porcion escalonada proximal 152. La porcion escalonada proximal 152 incluye un rebajo 154.
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Haciendo referencia otra vez a las figuras 8 a 10 y tambien a las figuras 13 a 15, el miembro de traslacion 138 incluye una pluralidad de crestas 156 que estan configuradas para ser recibidas a deslizamiento dentro de surcos 158 formados a lo largo de las paredes interiores del miembro de rotacion 28. El acoplamiento entre las crestas 156 y los surcos 158 impide una rotacion relativa del miembro de rotacion 29 y del miembro de traslacion 138, al tiempo que permite un movimiento lineal relativo. El extremo distal del miembro de traslacion 138 incluye un brazo 160 que presenta una abertura 162 configurada para recibir un dedo 164 que se extiende desde el extremo proximal de la barra de articulacion 123 (vease la figura 10a). Una espiga 166 que tiene un alojamiento 168 construido de un material no abrasivo, por ejemplo Teflon, esta asegurada al miembro de traslacion 138 y dimensionada para ser recibida dentro de la superficie de leva escalonada 148.
En un estado ensamblado, las porciones escalonadas proximal y distal 150 y 152 del miembro de leva 136 estan posicionadas debajo de pestanas 170 y 172 formadas en el miembro de rotacion 28 para restringir el miembro de leva 136 a un movimiento transversal con respecto al eje longitudinal del aparato grapador 10. Cuando se hace pivotar la palanca de articulacion 30 alrededor del miembro de pivote 140, el miembro de leva 136 se mueve transversalmente sobre el miembro de rotacion 28 para mover la superficie de leva escalonada 148 en direccion transversal con relacion a la espiga 166, forzando a la espiga 166 a que se mueva proximal o distalmente a lo largo de la superficie de leva escalonada 148. Dado que la espiga 166 esta fijamente sujeta al miembro de traslacion 138, este miembro de traslacion 138 es movido proximal o distalmente para efectuar un movimiento proximal o distal correspondiente de la primera barra de articulacion 123.
Haciendo referencia a las realizaciones de las figuras 8 a 10 y 16, un mecanismo sensor de la unidad de carga desechable se extiende dentro del aparato grapador 10 desde el cuerpo alargado 14 hasta dentro del conjunto de mango 12. El mecanismo sensor incluye un tubo sensor 176 que esta soportado a deslizamiento dentro del anima 26 del cuerpo alargado 14. El extremo distal del tubo sensor 176 esta posicionado hacia el extremo distal del cuerpo alargado 14 y el extremo proximal del tubo sensor 176 esta asegurado dentro del extremo distal de un cilindro sensor 176 a traves de un par de pezones 180. El extremo distal de una barra articulada sensora 182 esta asegurado al extremo proximal del cilindro sensor 178. La barra articulada sensora 182 (veanse las figuras 8a y 8c) tiene un extremo bulboso 184 que se aplica a una superficie de leva 83a del miembro de bloqueo pivotable 83. Cuando se inserta una unidad de carga desechable (no mostrada) en el extremo distal del cuerpo alargado 14, dicha unidad de carga desechable se aplica al extremo distal 177 del tubo sensor 176 para impulsar dicho tubo sensor 176 en direccion proximal e impulsar asf al cilindro sensor 178 y a la barra articulada sensora 182 en direccion proximal. El movimiento de la barra articulada sensora 182 en direccion proximal hace que el extremo bulboso 184 de la barra articulada sensora 182 se mueva en direccion distal respecto de la superficie de leva 83a para permitir que el miembro de bloqueo 83 pivote bajo la solicitacion del muelle 92 desde una posicion que permite el disparo del aparato grapador 10 hasta una posicion de bloqueo, en la que el miembro de bloqueo 83 esta posicionado para aplicarse al arbol de actuacion 46 e impedir el disparo del aparato grapador 10. La barra articulada sensora 182 y el miembro de bloqueo 83 funcionan para impedir el disparo del aparato grapador quirurgico 10 despues de que se haya asegurado una unidad de carga desechable al cuerpo alargado 14, sin accionar primero el conjunto 80 de bloqueo antidisparo. Es de hacer notar que el movimiento de la barra articulada 182 en direccion proximal permite que el miembro de bloqueo 83 se mueva hasta su posicion mostrada en la figura 5.
Haciendo referencia otra vez a las figuras 9 a 12, el miembro de leva 136 incluye un rebajo 154. Un anillo de bloqueo 184 que tiene una porcion de pezon 186 configurada para ser recibida dentro del rebajo 154 esta posicionado alrededor del cilindro sensor 178 entre una porcion de patilla de control 188 y una porcion de pestana proximal 190. Un muelle 192 posicionado entre la porcion de pestana 190 y el anillo de bloqueo 184 empuja a dicho anillo de bloqueo en direccion distal alrededor del cilindro sensor 178. Cuando una unidad de carga desechable articulante 16b que tiene una punta de insercion prolongada 193 es insertada en el extremo distal del cuerpo alargado 14 del aparato grapador 10, la punta de insercion 193 hace que la porcion de patilla 188 se mueva en direccion proximal para acoplarse con el anillo de bloqueo 184 a fin de empujar a dicho anillo de bloqueo 184 y al pezon 186 en direccion proximal con respecto al rebajo 154 del miembro de leva 136 (vease la figura 12b). Con el pezon 186 posicionado proximalmente respecto del rebajo 154, el miembro de leva 136 es libre de moverse transversalmente para efectuar la articulacion del aparato grapador 10. Una unidad de carga desechable no articulante no tiene una punta de insercion prolongada (vease la figura 12a). Como tal, cuando se inserta una unidad de carga desechable no articulante en el cuerpo alargado 14, el cilindro sensor 178 no es retrafdo proximalmente en una distancia suficiente para mover el pezon 186 hacia fuera del rebajo 154. Por tanto, se impide el movimiento transversal del miembro de leva 136 por medio del pezon 186 del anillo de bloqueo 184, que esta posicionado en el rebajo 154, y la palanca articulada 30 es bloqueada en su posicion central.
Haciendo referencia a las figuras 16 a 18, el extremo distal del cuerpo alargado 14 incluye un mecanismo de bloqueo 190 de la varilla de control que es activado durante la insercion de una unidad de carga desechable en el cuerpo alargado 14. El mecanismo de bloqueo 190 de la varilla de control incluye una placa de bloqueo 192 que es solicitada distalmente por un muelle 194 y que incluye un dedo proximal 189 que tiene una superficie de leva angulada 195. Un miembro de acoplamiento semicircular 196 es solicitado transversalmente hacia la varilla de control 52 por un muelle 197. La varilla de control 52 incluye un rebajo anular 199 configurado para recibir el miembro de acoplamiento 196. La placa de bloqueo 192 es movil desde una posicion distal espaciada del miembro de acoplamiento 196 hasta una posicion proximal situada detras del miembro de acoplamiento 196. En la posicion proximal se impide que el miembro de acoplamiento 196 sea solicitado hacia fuera del rebajo 199 por acoplamiento
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del mismo con la placa de bloqueo 192. Durante la insercion de una unidad de carga desechable 16 (vease la figura 1) en el extremo distal del cuerpo alargado 14, tal como se describira seguidamente con mas detalle, la superficie de leva 195 de la placa de bloqueo 192 es cogida por un pezon 254 (figura 30) de la unidad de carga desechable 16 mientras dicha unidad de carga desechable es hecha girar para acoplarse con el cuerpo alargado 14 a fin de empujar la placa 192 hasta la posicion proximal. El miembro de acoplamiento 196, que esta posicionado dentro del rebajo 199, es retenido en este por la placa de bloqueo 192 mientras el pezon 254 se aplica a la superficie de leva 195 para impedir el movimiento longitudinal de la varilla de control 52 durante el montaje. Cuando la unidad de carga desechable 16 esta apropiadamente posicionada con respecto al cuerpo alargado 14, el pezon 254 del extremo proximal de la unidad de carga desechable 16 se separa de la superficie de leva 195 permitiendo que el muelle 194 devuelva la placa de bloqueo 192 a su posicion distal para permitir un movimiento longitudinal subsiguiente de la varilla de control 52. Es de hacer notar que, cuando el pezon de la unidad de carga desechable se separa de la superficie de leva 195, se produce un chasquido audible indicando que la unidad de carga desechable 16 esta apropiadamente sujeta al cuerpo alargado 14.
Haciendo referencia a las figuras 19 y 20, la unidad de carga desechable 16 incluye una porcion de alojamiento proximal 200 adaptada para acoplarse en forma liberable al extremo distal de la porcion de cuerpo 14 (figura 1). Un conjunto de montaje 202 esta asegurado de forma pivotante al extremo distal de la porcion de alojamiento 200 y esta configurado para recibir el extremo proximal del conjunto de utillaje 17 de tal manera que el movimiento pivotante del conjunto de montaje 202 alrededor de un eje perpendicular al eje longitudinal de la porcion de alojamiento 200 efectue la articulacion del conjunto de utillaje 17.
Haciendo referencia a las figuras 21 a 26, el conjunto de utillaje 17 incluye preferiblemente un conjunto de yunque 20 y un conjunto de cartucho 18. El conjunto de yunque 20 incluye una porcion de yunque 204 que tiene una pluralidad de cavidades 206 de deformacion de grapas (figura 22) y una placa de cubierta 208 asegurada a una superficie superior de la porcion de yunque 204 para definir una cavidad 210 (figura 24) entre ellas. La placa de cubierta 208 esta prevista para impedir el pinzado de tejido durante el apriete y disparo del aparato grapador 10. La cavidad 210 esta dimensionada para recibir un extremo distal de un conjunto de accionamiento axial 212 (vease la figura 27). Una ranura longitudinal 214 se extiende a traves de la porcion de yunque 204 para facilitar el paso de una pestana de retencion 284 del conjunto de accionamiento axial 212 hasta el interior de la cavidad de yunque 210. Una superficie de leva 209 formada en la porcion de yunque 204 esta posicionada para aplicarse al conjunto de accionamiento axial 212 para facilitar el apriete de tejido 198. Un par de miembros de pivote 211 formados en la porcion de yunque 204 estan posicionados dentro de ranuras 213 formadas en el portador 216 para guiar la porcion de yunque entre las posiciones abierta y apretada. Un par de miembros de estabilizacion 215 se aplican a un hombro respectivo 217 formado en el portador 216 para impedir que la porcion de yunque 204 se deslice axialmente con relacion al cartucho de grapas 220 a medida que se deforma la superficie de leva 209.
El conjunto de cartucho 18 incluye un portador 216 que define un canal de soporte alargado 218. El canal de soporte alargado 218 esta dimensionado y configurado para recibir un cartucho de grapas 220. Unas patillas 222 y unas ranuras 224 correspondientes formadas a lo largo del cartucho de grapas 220 y del canal de soporte alargado 218 funcionan para retener el cartucho de grapas 220 dentro del canal de soporte 218. Un par de puntales de soporte 223 formados en el cartucho de grapas 220 estan posicionados para descansar sobre paredes laterales del portador 216 a fin de estabilizar aun mas el cartucho de grapas 220 dentro del canal de soporte 218.
El cartucho de grapas 220 incluye ranuras de retencion 225 para recibir una pluralidad de sujetadores 226 y empujadores 228. Una pluralidad de ranuras longitudinales espaciadas 230 se extienden a traves del cartucho de grapas 220 para dar acomodo a cunas de leva verticales 232 de un patm de actuacion 234. Una ranura longitudinal central 282 se extiende a lo largo de la longitud del cartucho de grapas 220 para facilitar el paso de una hoja de cuchilla 280. Durante el funcionamiento de la grapadora quirurgica 10, el patm de actuacion 234 se traslada por las ranuras longitudinales 230 del cartucho de grapas 220 para hacer avanzar cunas de leva 232 hasta posiciones de contacto secuencial con los empujadores 228 a fin de hacer que estos empujadores 228 se trasladen verticalmente dentro de las ranuras 224 y empujen sujetadores 226 pasandolos de las ranuras 224 a las cavidades 206 de deformacion de grapas del conjunto de yunque 20.
Haciendo referencia a las figuras 27 y 28, el conjunto de montaje 202 incluye porciones de montaje superior e inferior 236 y 238. Cada porcion de montaje incluye un taladro roscado 240 a cada lado de la misma, dimensionado para recibir pernos roscados 242 (vease la figura 21) destinados a asegurar el extremo proximal del portador 216 a la misma. Un par de miembros de pivote centralmente situados 244 (vease la figura 21) se extienden entre las porciones de montaje superior e inferior a traves de un par de miembros de acoplamiento 246 que se aplican al extremo distal de la porcion de alojamiento 200. Los miembros de acoplamiento 246 incluyen cada uno de ellos una porcion proximal de enclavamiento 248 configurada para ser recibida en surcos 250 formados en el extremo proximal de la porcion de alojamiento 200 a fin de retener el conjunto de montaje 202 y la porcion de alojamiento 200 en una posicion longitudinalmente fija con relacion a la misma.
La porcion de alojamiento 200 de la unidad de carga desechable 16 incluye una mitad de alojamiento superior 250 y una mitad de alojamiento inferior 252 contenidas dentro de una envuelta exterior 251. El extremo proximal de la mitad de alojamiento 250 incluye unos pezones de acoplamiento 254 destinados a acoplarse en forma liberable con el cuerpo alargado 14 y una punta de insercion 193. Los pezones 254 forman un acoplamiento del tipo de bayoneta
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con el extremo distal del cuerpo 14, lo cual se describira seguidamente con mayor detalle. Las mitades de alojamiento 250 y 252 definen un canal 253 destinado a recibir en forma deslizable el conjunto de accionamiento axial 212. Una segunda barra de articulacion 256 esta dimensionada para ser posicionado en forma deslizable dentro de una ranura 258 formada entre las mitades de alojamiento 250 y 252. Un par de placas expulsoras 254 estan posicionadas junto al extremo distal de la porcion de alojamiento 200 adyacente al extremo distal del conjunto de accionamiento axial 212 para impedir el abultamiento hacia fuera del conjunto de accionamiento 212 durante la articulacion del conjunto de utillaje 17.
Haciendo referencia a las realizaciones de las figuras 29 y 30, la segunda barra de articulacion 256 incluye al menos una placa metalica alargada. Preferiblemente, dos o mas placas metalicas estan apiladas formando la barra articulada 256. El extremo proximal de la barra de articulacion 256 incluye una porcion de gancho 258 configurada para acoplarse con la primera barra de articulacion 123 (vease la figura 9) y el extremo distal incluye un bucle 260 dimensionado para acoplarse con un saliente 262 formado en el conjunto de montaje 202. El saliente 262 esta lateralmente desplazado respecto de la espiga pivote 244 de tal manera que el movimiento lineal de la segunda barra de articulacion 256 hace que el conjunto de montaje 202 pivote alrededor de pasadores de pivote 244 para articular el conjunto de utillaje 17.
Haciendo referencia tambien a las figuras 31 a 34, el conjunto de accionamiento axial 212 incluye un vastago o barra de accionamiento alargado 266 que tiene una cabeza de trabajo distal 268 y una seccion de acoplamiento proximal 270. El vastago de accionamiento 266 puede estar construido de una sola lamina de material o, preferiblemente, de multiples laminas apiladas. La seccion de acoplamiento 270 incluye un par de dedos de acoplamiento 270a y 270b que estan dimensionados y configurados para acoplarse en situacion de montaje con un par de ranuras de retencion correspondientes 272a y 272b formadas en el miembro de accionamiento 272. El miembro de accionamiento 272 incluye una portilla proximal 274 configurada para recibir el extremo distal 276 de la varilla de control 52 (vease la figura 35) cuando se acopla el extremo proximal de la unidad de carga desechable 16 con el cuerpo alargado 14 del aparato grapador quirurgico 10.
El extremo distal del vastago de accionamiento 266 esta definido por un puntal de soporte vertical 278 que soporta una hoja de cuchilla 280, y una superficie de apoyo 283 que se aplica a la porcion central del patm de actuacion 234 durante una operacion de grapado. La superficie 285 en la base de la superficie 283 esta configurada para recibir un miembro de soporte 287 posicionado en forma deslizable a lo largo del fondo del cartucho de grapas 220. La hoja de cuchilla 280 esta posicionada para trasladarse ligeramente por detras del patm de actuacion 234 a traves de una ranura longitudinal central 282 del cartucho de grapas 220 (figura 30) para formar una incision entre filas de tejido corporal grapado. Una pestana de retencion 284 sobresale distalmente desde el puntal vertical 278 y soporta un rodillo de leva cilmdrico 286 en su extremo distal. El rodillo de leva 286 esta dimensionado y configurado para aplicarse a la superficie de leva 209 del cuerpo de yunque 204 para apretar la porcion de yunque 204 contra el tejido corporal.
Haciendo referencia tambien a las figuras 36 a 39, un dispositivo de bloqueo 288 esta asegurado de forma pivotante al miembro de accionamiento 270 alrededor de una espiga pivote 290. El miembro de bloqueo 288 incluye un par de deslizaderas alargadas 292 y 294 que definen un canal 296. Un alma 298 une una porcion de las superficies superiores de las deslizaderas 292 y 294 y esta configurada y dimensionada para ajustar dentro de la ranura alargada 298 formada en el vastago de accionamiento 266 en una posicion distal respecto del miembro de accionamiento 270. Unas levas horizontales 300 y 302 se extienden desde las deslizaderas 292 y 294, respectivamente, y estan acomodadas a lo largo de una superficie interior de la mitad de alojamiento inferior 252. Como se muestra de forma optima en la figura 42, un muelle de torsion 304 esta posicionado junto al miembro de accionamiento 270 y se aplica a las levas horizontales 300 y 302 del dispositivo de bloqueo 288 para solicitar normalmente al dispositivo de bloqueo 288 hacia abajo en direccion a la mitad de alojamiento inferior 252 y colocarlo sobre un lomo 310. El dispositivo de bloqueo 288 se traslada a traves de la porcion de alojamiento 200 con el conjunto de accionamiento axial 212. Se describira seguidamente el funcionamiento del dispositivo de bloqueo 288.
Secuencia de funcionamiento
Haciendo referencia a las figuras 40 a 44, para utilizar el instrumento grapador 10 se asegura primero una unidad de carga desechable 16 al extremo distal del cuerpo alargado 14. Como se ha discutido anteriormente, el aparato grapador 10 puede utilizarse con unidades de carga desechables tanto articulantes como no articulantes que tengan filas lineales de grapas de entre aproximadamente 30 mm y aproximadamente 60 mm. Para asegurar la unidad de carga desechable 16 al cuerpo alargado 14, se inserta el extremo distal 276 de la varilla de control 52 en la punta de insercion 193 de la unidad de carga desechable 16 y se desliza la punta de insercion 193 longitudinalmente hacia dentro del extremo distal del cuerpo alargado 14 en la direccion indicada por la flecha "A" en la figura 41 de tal manera que la porcion de gancho 258 de la segunda barra de articulacion 256 se deslice dentro de un canal 310 del cuerpo alargado 314. Los pezones 254 se alinearan cada uno de ellos en un respectivo canal (no mostrado) del cuerpo alargado 14. Cuando la porcion de gancho 258 se aplica a la pared proximal 312 del canal 310, se gira la unidad de carga desechable 16 en la direccion indicada por la flecha "B" en las figuras 41 a 44 para mover la porcion de gancho 258 de la segunda barra de articulacion 256 hacia una posicion de acoplamiento con el dedo 164 de la primera barra de articulacion 123. Los pezones 254 forman tambien un acoplamiento del tipo de bayoneta dentro del canal anular 314 del cuerpo 14. Durante la rotacion de la unidad de carga 16, los pezones 254 se aplican a la
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superficie de leva 195 (figura 41) de la placa de bloqueo 192 para mover inicialmente dicha placa 192 en la direccion indicada por la flecha "C" en las figuras 41 y 43 a fin de bloquear el miembro de acoplamiento 196 dentro del rebajo 199 de la varilla de control 52 para impedir un movimiento longitudinal de dicha varilla de control 52 durante la fijacion de la unidad de carga desechable 16. Durante el grado final de rotacion, los pezones 254 se desacoplan de la superficie de leva 195 para permitir que la placa de bloqueo 192 se mueva en la direccion indicada por la flecha "D" de las figuras 42 y 44 desde detras del miembro de acoplamiento 196 para permitir una vez mas un movimiento longitudinal de la varilla de control 52.
Haciendo referencia a las figuras 43 y 43a, cuando se aplica la punta de insercion 193 al extremo distal del tubo sensor 176, se activa el mecanismo sensor de la unidad de carga desechable. La punta de insercion 193 se aplica al tubo sensor 176 y lo mueve proximalmente en la direccion indicada por la flecha "E" en la figura 43. Como se ha discutido anteriormente, el movimiento proximal del tubo sensor 176 efectua un movimiento proximal del cilindro sensor 178 y de la barra articulada sensora 182 en la direccion indicada por la flecha "E" en la figura 43a para hacer que el miembro de bloqueo 83 pivote en sentido levogiro, segun se indica por la flecha "Y" en la figura 43a, desde una posicion de ausencia de bloqueo a un movimiento de bloqueo de posicion del arbol de actuacion 46.
Haciendo referencia a las figuras 46 a 49, con una unidad de carga desechable fijada al instrumento grapador 10, el conjunto de utillaje 17 puede ser posicionado alrededor del tejido 320 (figura 45). Para aprisionar el tejido entre el conjunto de yunque 20 y el conjunto de cartucho 18, se mueve el mango estacionario 24 en la direccion indicada por la flecha "E" en la figura 46 en contra de la solicitacion del muelle de torsion 40 para mover el trinquete de accionamiento 42 en el sentido de acoplarlo con el hombro 322 del arbol de actuacion 46. El acoplamiento entre el hombro 322 y el trinque de accionamiento 42 hace que avance el arbol de actuacion 46 y, por tanto, que avance la varilla de control 52 en direccion distal. La varilla de control 52 esta conectada en su extremo distal al conjunto de accionamiento axial 212 (figura 48), que incluye el vastago de accionamiento 266, de tal manera que el movimiento distal de la varilla de control 52 efectue un movimiento distal del vastago de accionamiento 266 en la direccion indicada por la flecha "F" en las figuras 48 y 49, moviendo el rodillo de leva 286 en el sentido de acoplarse con la superficie de leva 209 de la porcion de yunque 204 para empujar dicha porcion de yunque 204 en la direccion indicada por la flecha "G" en la figura 49. Es de hacer notar que una carrera completa del mango movil 24 hace que avance el arbol de actuacion 46 aproximadamente 15 mm, lo cual es suficiente para aprisionar el tejido durante la primera carrera, pero no para disparar grapas.
Como se ha tratado anteriormente con respecto al mecanismo de embrague antirreversion, durante la primera carrera (aprisionamiento) del mango movil 24, la placa de corredera 102 (figura 46) impide que el trinquete de bloqueo 54 engrane con la cremallera dentada 48. Para mantener el arbol de accionamiento 46 en su posicion longitudinal despues de que se suelta el mango 24, esta previsto un miembro de acoplamiento 324 (figura 47) en el miembro de bloqueo 83 para que se aplique al hombro 326 del arbol de actuacion 46 y retenga dicho arbol 46 en su posicion longitudinal (vease la figura 47). Tras la liberacion del mango movil 24, el trinquete de accionamiento 42 se mueve sobre la cremallera 48 a medida que el muelle de torsion 40 hace que el mango 24 retorne a una posicion espaciada del mango estacionario 22. En esta posicion, el trinquete de accionamiento 42 es empujado en el sentido de engranar con la cremallera dentada 48 para retener el arbol de actuacion 46 en su posicion longitudinal fija.
Para disparar grapas, se actua otra vez sobre el mango movil 24, es decir, se le mueve a lo largo de otra carrera. Como se ha discutido anteriormente, el aparato grapador 10 es capaz de recibir unidades de carga desechables que tengan filas lineales de grapas de entre aproximadamente 30 mm y aproximadamente 60 mm. Dado que cada carrera del mango movil 24 hace preferiblemente que avance el arbol de actuacion 46 en 15 mm, y se requiere una carrera para aprisionar tejido, el mango movil ha de ser actuado en (n+1) carreras para disparar grapas, siendo n la longitud de las filas lineales de grapas en la unidad de carga desechable fijada al instrumento grabador 10 dividida por 15 mm.
Haciendo referencia a la figura 50, antes de que se puedan disparar grapas, se tiene que activar el conjunto de bloqueo antidisparo 80 (figura 4) para mover la superficie de bloqueo 88 desde su posicion de bloqueo (figura 47) a una posicion de ausencia de bloqueo. Esto se consigue presionando hacia abajo sobre el embolo buzo 82 para mover la superficie de leva 85 hacia una posicion de acoplamiento con paredes laterales de la ranura 89 del miembro de bloqueo 83 a fin de pivotar dicho miembro de bloqueo 83 en la direccion indicada por la flecha "G" en la figura 50 (vease tambien la figura 5). Seguidamente, se puede actuar sobre el mango movil 24 durante un numero apropiado de carreras para hacer avanzar distalmente el arbol de actuacion 46, y, por tanto, la varilla de control 52 y el vastago de accionamiento 266, en la direccion indicada por la flecha "H" en las figuras 51 y 52 a fin de hacer avanzar el patm de actuacion 234 a traves del cartucho de grapas 220 para efectuar la eyeccion de las grapas. Es de hacer notar que, despues de la primera carrera o carrera de aprisionamiento del mango movil 54 (durante la segunda carrera), la corredera 102 pasa sobre el trinquete de bloqueo 54 permitiendo que el muelle de torsion 56 mueva dicho trinquete de bloqueo 54 en la direccion indicada por la flecha "I" en la figura 50 hasta una posicion de engrane con la cremallera dentada 48 para retener el arbol de actuacion 46 en su posicion longitudinal.
Haciendo referencia a la figura 53, para retraer el arbol de actuacion 46 y, por tanto, la varilla de control 52 y el miembro de accionamiento 266 despues de disparar grapas, se tira proximalmente de los mandos de retraccion 32 (vease la figura 1) haciendo que las espigas 66 muevan la placa de liberacion 64 en la direccion indicada por la flecha "J" en la figura 53 sobre los dientes 48 para desacoplar el trinquete de accionamiento 42 de su engrane con
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los dientes 48. Como se ha discutido anteriormente, con respecto al mecanismo de embrague antirreversion, el trinquete de bloqueo 54 es empujado por la placa de corredera 102 hacia fuera de su posicion de engrane con la cremallera dentada 48 (no mostrado) para permitir que se mueva proximalmente el arbol de actuacion 46, en la direccion indicada por la flecha "L", despues de que el trinquete de accionamiento 42 se desacople de los dientes 48.
Haciendo referencia a la figura 54, para retraer el arbol de actuacion 46 antes de disparar el aparato grapador, es decir, cuando el trinquete de bloqueo esta engranado en ese momento con la cremallera dentada 48, se empuja el boton de retorno de emergencia 112 en la direccion indicada por la flecha "Z" en la figura 54 para desacoplar el trinquete de bloqueo 54 de la cremallera dentada 48. Se ha de tirar tambien concurrentemente de los mandos de retraccion 32 (figura 1) hacia atras, tal como se ha discutido anteriormente, para liberar el trinquete de bloqueo 42 de la cremallera 48.
Haciendo referencia a las figuras 55 a 61, cuando se asegura una unidad de carga desechable articulante al cuerpo alargado 14 y se pivota la palanca de articulacion 30 en la direccion indicada por la flecha "M" en la figura 55, el miembro de leva 136 es movido transversalmente por el saliente 142 (figura 10) en la direccion indicada por la flecha "N" entre las pestanas 170 y 172 del mando de rotacion 28. Dado que el miembro de traslacion 138 es impedido de girar por las crestas 156 (figura 13), la espiga 166, que esta fijamente asegurada al miembro de traslacion 138, es obligada a moverse a lo largo de la superficie de leva escalonada 148. El movimiento de la espiga 166 produce un movimiento correspondiente del miembro de traslacion 138 en la direccion indicada por la flecha "P" en las figuras 55 y 56 para hacer avanzar la primera barra de articulacion 123 en la direccion distal. El extremo distal de la primera barra de articulacion 123 se aplica al extremo proximal de la segunda barra de articulacion 256 (figura 42), que esta conectado al saliente 262 del conjunto de montaje 202 para hacer avanzar la segunda barra articulada 256 en la direccion indicada por la flecha "Q" en la figura 57. El saliente 262 esta lateralmente desplazado respecto de los miembros de pivote 244, de tal manera que el avance distal de la segunda barra de articulacion 256 hace que el conjunto de montaje 202 y, por tanto, el conjunto de utillaje 17 pivoten en la direccion indicada por la flecha "R" en las figuras 57 y 58. Observese en la figura 59 que el miembro de rotacion 28 puede ser hecho girar para que el cuerpo alargado 14 gire alrededor de su eje longitudinal mientras se articula el conjunto de utillaje 17.
Las figuras 60 y 61 ilustran la articulacion del conjunto de utillaje 17 en la direccion opuesta a la descrita anteriormente. Cuando la segunda barra de articulacion 256 es retrafda por el giro de la palanca de articulacion 30 en sentido levogiro (no mostrado), como se ve en la figura 55, el pasador 66 es obligado a moverse proximalmente a lo largo de la superficie de leva escalonada 148, moviendo proximalmente al miembro de traslacion 138 y a la primera barra de articulacion 123. El movimiento de la primera barra de articulacion 123 en direccion proximal hace que la segunda barra de articulacion 256 se mueva proximalmente, como se indica por la flecha "S" en la figura 58, para hacer girar el conjunto de utillaje 17 en sentido dextrogiro, segun se indica por la flecha "T" en la figura 61.
Haciendo referencia a la figura 12, el movimiento de la espiga 166 (figura 9) entre porciones de escalon adyacentes 340 hace que el conjunto de utillaje 17 se articule en 22,5 grados. La superficie de leva 148 incluye cinco porciones de escalon 340. La tercera porcion de escalon corresponde a la posicion del conjunto de utillaje no articulado, mientras que las porciones de escalon primera y quinta corresponden a la articulacion del conjunto de utillaje 17 hasta 45 grados. Cada porcion de escalon es plana para retener la palanca de articulacion 30 en una posicion fija cuando se aplica a ella el pasador 166.
Haciendo referencia ahora a las figuras 37, 39, 62 y 63, se describira con detalle la secuencia de la operacion de bloqueo. En la figura 39 se muestra el dispositivo de bloqueo 288 en su posicion predisparada con las levas horizontales 300 y 302 descansando encima de las protecciones 330 formadas en las paredes laterales de la mitad de alojamiento inferior 252 (figura 37). En esta posicion se mantiene el dispositivo de bloqueo 288 en situacion de fuera de alineacion con el saliente 332 formado en la superficie inferior de la mitad de alojamiento inferior 252, y el alma 298 esta en yuxtaposicion longitudinal con el estante 334 definido en el vastago de accionamiento 266. Esta configuracion permite que el yunque 20 (figura 38) sea abierto y reposicionado sobre el tejido a grapar hasta que el cirujano este satisfecho con la posicion sin activar el dispositivo de bloqueo 288 para inhabilitar la unidad de carga desechable 16.
Como se muestra en la figura 62, al producirse el movimiento distal del vastago de accionamiento 266, el dispositivo de bloqueo 288 corre separandose de los salientes 330 (no mostrados) y es solicitado hacia una posicion de acoplamiento con la base de la mitad de alojamiento inferior 252 por el muelle 304, distal con respecto al saliente 332. El dispositivo de bloqueo 288 permanece en esta configuracion durante todo el proceso de disparo del aparato.
Al retraer el vastago de accionamiento 266 en la direccion indicada por la flecha "U" de la figura 62, el dispositivo de bloqueo 288 pasa por debajo de los salientes 330 y corre sobre el saliente 332 hasta que la porcion mas distal del dispositivo de bloqueo 288 es proximal con respecto al saliente 332. El muelle 304 solicita el dispositivo de bloqueo 288 hacia una posicion de alineacion yuxtapuesta con el saliente 332, inhabilitando efectivamente la unidad de carga desechable. Si se hace un intento de volver a activar el aparato, la varilla de control 52 se apoyara en una superficie extrema proximal del dispositivo de bloqueo 288, cuya superficie esta diagonalmente inclinada para impartir un par de giro alrededor de la espiga pivote 342 de tal manera que el extremo distal del dispositivo de bloqueo 288 sea empujado con movimiento rotativo hacia una posicion de contacto con el saliente 332. La fuerza distal continuada en la direccion indicada por la flecha "W" en la figura 63 servira solamente para incrementar el par aplicado al
dispositivo de bloqueo, y asf este dispositivo de bloqueo se apoyara en el saliente 332 e inhibira el movimiento distal de la varilla de control 52.
Haciendo referencia otra vez a las figuras 41 a 44, la unidad de carga desechable inhabilitada o bloqueada puede ser retirada del extremo distal del cuerpo alargado 14 haciendo girar dicha unidad de carga desechable 16 en la 5 direccion opuesta a la direccion indicada por la flecha "B" en las figuras 41, 42 y 44, para dar lugar a que la porcion de gancho 258 de la segunda barra de articulacion 256 se separe del dedo 164 de la primera barra de articulacion 123 y para extraer los pezones 254 de dentro del canal 314 del cuerpo alargado 14. Despues de la rotacion, la unidad de carga desechable 16 puede ser deslizada en la direccion opuesta a la indicada por la flecha "A" en la figura 41 para separar el cuerpo 14 de la unidad de carga desechables 16. Seguidamente, se pueden asegurar 10 unidades de carga desechable articulantes y/o no articulantes al extremo distal del cuerpo alargado, segun se ha descrito anteriormente, para realizar intervenciones quirurgicas adicionales de grapado y/o de corte. Como se ha discutido anteriormente, cada unidad de carga desechable puede incluir filas lineales de grapas que vanan de aproximadamente 30 mm a aproximadamente 60 mm.
Se entendera que pueden hacerse diversas modificaciones a las realizaciones descritas en esta memoria. Por 15 ejemplo, el aparato grapador no necesita aplicar grapas, sino que, por el contrario, puede aplicar sujetadores de dos partes, tal como es conocido en la materia. Ademas, la longitud de la fila lineal de grapas o sujetadores puede ser modificada para satisfacer los requisitos de una intervencion quirurgica particular. Por tanto, la longitud de una sola carrera del arbol de actuacion y/o la longitud de la fila lineal de grapas y/o sujetadores dentro de una unidad de carga desechable pueden ser variadas de manera correspondiente. Por tanto, la descripcion anterior no debera 20 interpretarse como limitativa, sino meramente como ejemplificaciones de realizaciones preferidas. Los expertos en la materia contemplaran otras modificaciones dentro del alcance de las reivindicaciones adjuntas a esta memoria.
Claims (4)
- 51015202530REIVINDICACIONES1. - Un aparato grapador quirurgico (10) que comprende:a) un conjunto de mango (12) que incluye un mango movil (24), pudiendo el mango movil moverse a lo largo de una carrera de actuacion;b) un cuerpo alargado (14) que se extiende distalmente desde el conjunto de mango y que define un eje longitudinal, teniendo el cuerpo alargado un extremo distal;c) un arbol de actuacion (46) soportado al menos en parte dentro del conjunto de mango y montado para tener un movimiento longitudinal en respuesta a la manipulacion del mango movil;caracterizado por que dicho extremo distal de dicho cuerpo alargado (14) esta adaptado para acoplarse en forma liberable a unidades de carga desechables (16) tanto de tipo articulante como no articulante, y dicho aparato grapador quirurgico (10) comprende ademas:d) un mecanismo de articulacion (120) que incluye una palanca de articulacion (30) montada adyacente al conjunto de mango y a una barra de articulacion (123), la barra de articulacion tiene un extremo proximal conectado operativamente a la palanca de articulacion y un extremo distal situado adyacente al extremo distal del cuerpo alargado; ye) un mecanismo sensor (176) situado dentro del cuerpo alargado y asociado operativamente con el mecanismo de articulacion, el mecanismo sensor incluye un miembro sensor para percibir el tipo de unidad de carga desechable asegurada al cuerpo alargado.
- 2. - Un aparato grapador quirurgico segun la reivindicacion 1, en el que el miembro sensor esta situado de forma movible dentro del cuerpo alargado, siendo el miembro sensor movible a una primera posicion en respuesta al acopamiento de una unidad de carga desechable no articulante con el cuerpo alargado y una segunda posicion en respuesta al acoplamiento de una unidad de carga desechable articulante con el cuerpo alargado.
- 3. - Un aparato grapador quirurgico segun la reivindicacion 2, en el que en la primera posicion, el mecanismo sensor esta acoplado operativamente con el mecanismo articulante para impedir el movimiento de la palanca de articulacion.
- 4. - Un aparato grapador quirurgico segun la reivindicacion 3, en el que el mecanismo de articulacion incluye un miembro de leva que tiene una ranura de leva escalonada, estando el miembro de leva situado operativamente entre la palanca de articulacion y la barra de articulacion.
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| US935980 | 1997-09-23 | ||
| US08/935,980 US5865361A (en) | 1997-09-23 | 1997-09-23 | Surgical stapling apparatus |
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| ES2557032T3 true ES2557032T3 (es) | 2016-01-21 |
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| ES09167613T Expired - Lifetime ES2399116T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirúrgico |
| ES09175507T Expired - Lifetime ES2372662T3 (es) | 1997-09-23 | 1998-09-18 | Dispositivo grapador quirúrgico. |
| ES10175047T Expired - Lifetime ES2398916T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirúrgico |
| ES10185767T Expired - Lifetime ES2399811T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirúrgico |
| ES98951919T Expired - Lifetime ES2275317T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirurgico. |
| ES06023618T Expired - Lifetime ES2335523T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirurgico. |
| ES14179366.1T Expired - Lifetime ES2557032T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirúrgico |
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| ES09167613T Expired - Lifetime ES2399116T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirúrgico |
| ES09175507T Expired - Lifetime ES2372662T3 (es) | 1997-09-23 | 1998-09-18 | Dispositivo grapador quirúrgico. |
| ES10175047T Expired - Lifetime ES2398916T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirúrgico |
| ES10185767T Expired - Lifetime ES2399811T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirúrgico |
| ES98951919T Expired - Lifetime ES2275317T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirurgico. |
| ES06023618T Expired - Lifetime ES2335523T3 (es) | 1997-09-23 | 1998-09-18 | Aparato grapador quirurgico. |
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| EP (10) | EP2316348B1 (es) |
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| DE (2) | DE69836436T2 (es) |
| ES (7) | ES2399116T3 (es) |
| WO (1) | WO1999015086A1 (es) |
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| US8931679B2 (en) | 2011-10-17 | 2015-01-13 | Covidien Lp | Surgical stapling apparatus |
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1997
- 1997-09-23 US US08/935,980 patent/US5865361A/en not_active Expired - Lifetime
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1998
- 1998-09-18 ES ES09167613T patent/ES2399116T3/es not_active Expired - Lifetime
- 1998-09-18 EP EP10185767A patent/EP2316348B1/en not_active Expired - Lifetime
- 1998-09-18 AU AU97748/98A patent/AU750646B2/en not_active Expired
- 1998-09-18 ES ES09175507T patent/ES2372662T3/es not_active Expired - Lifetime
- 1998-09-18 EP EP06023618A patent/EP1762190B8/en not_active Expired - Lifetime
- 1998-09-18 EP EP14179366.1A patent/EP2818124B1/en not_active Expired - Lifetime
- 1998-09-18 EP EP15195238.9A patent/EP3009079A1/en not_active Withdrawn
- 1998-09-18 EP EP09175507A patent/EP2156796B1/en not_active Expired - Lifetime
- 1998-09-18 EP EP10175056A patent/EP2298186A3/en not_active Withdrawn
- 1998-09-18 CA CA002571579A patent/CA2571579C/en not_active Expired - Lifetime
- 1998-09-18 ES ES10175047T patent/ES2398916T3/es not_active Expired - Lifetime
- 1998-09-18 DE DE69836436T patent/DE69836436T2/de not_active Expired - Lifetime
- 1998-09-18 EP EP98951919A patent/EP1021130B1/en not_active Expired - Lifetime
- 1998-09-18 JP JP2000512464A patent/JP4257029B2/ja not_active Expired - Lifetime
- 1998-09-18 CA CA002571576A patent/CA2571576C/en not_active Expired - Lifetime
- 1998-09-18 EP EP10175047A patent/EP2286736B1/en not_active Revoked
- 1998-09-18 CA CA002304750A patent/CA2304750C/en not_active Expired - Lifetime
- 1998-09-18 CA CA2666604A patent/CA2666604C/en not_active Expired - Lifetime
- 1998-09-18 ES ES10185767T patent/ES2399811T3/es not_active Expired - Lifetime
- 1998-09-18 DE DE69841287T patent/DE69841287D1/de not_active Expired - Lifetime
- 1998-09-18 EP EP09167613A patent/EP2113207B1/en not_active Expired - Lifetime
- 1998-09-18 ES ES98951919T patent/ES2275317T3/es not_active Expired - Lifetime
- 1998-09-18 CA CA2571468A patent/CA2571468C/en not_active Expired - Lifetime
- 1998-09-18 ES ES06023618T patent/ES2335523T3/es not_active Expired - Lifetime
- 1998-09-18 ES ES14179366.1T patent/ES2557032T3/es not_active Expired - Lifetime
- 1998-09-18 WO PCT/US1998/019465 patent/WO1999015086A1/en not_active Ceased
- 1998-09-18 EP EP10175045.3A patent/EP2298185A3/en not_active Withdrawn
- 1998-09-18 CA CA002552427A patent/CA2552427C/en not_active Expired - Lifetime
- 1998-10-05 US US09/166,378 patent/US6079606A/en not_active Expired - Lifetime
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2000
- 2000-04-28 US US09/561,567 patent/US6241139B1/en not_active Expired - Lifetime
- 2000-10-05 US US09/680,093 patent/US6330965B1/en not_active Expired - Lifetime
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2001
- 2001-12-10 US US10/014,004 patent/US6669073B2/en not_active Expired - Lifetime
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2003
- 2003-11-03 US US10/700,250 patent/US20040108357A1/en not_active Abandoned
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2004
- 2004-11-05 US US10/983,288 patent/US6953139B2/en not_active Expired - Lifetime
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2005
- 2005-07-20 US US11/186,742 patent/US20060049229A1/en not_active Abandoned
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2006
- 2006-07-19 US US11/489,212 patent/US7303107B2/en not_active Expired - Fee Related
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2007
- 2007-10-15 US US11/974,638 patent/US7565993B2/en not_active Expired - Fee Related
- 2007-11-08 JP JP2007291372A patent/JP4500343B2/ja not_active Expired - Lifetime
- 2007-11-08 JP JP2007291373A patent/JP2008086788A/ja not_active Withdrawn
- 2007-11-08 JP JP2007291371A patent/JP4500342B2/ja not_active Expired - Lifetime
- 2007-11-08 JP JP2007291374A patent/JP4500344B2/ja not_active Expired - Lifetime
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2009
- 2009-06-30 US US12/494,617 patent/US8083118B2/en not_active Expired - Fee Related
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2010
- 2010-02-09 JP JP2010026980A patent/JP5084061B2/ja not_active Expired - Lifetime
- 2010-05-24 JP JP2010118856A patent/JP2010234061A/ja not_active Withdrawn
- 2010-06-03 US US12/793,196 patent/US8070033B2/en not_active Expired - Fee Related
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2011
- 2011-06-10 US US13/157,828 patent/US8087563B2/en not_active Expired - Fee Related
- 2011-10-31 US US13/285,355 patent/US8210416B2/en not_active Expired - Fee Related
- 2011-11-14 US US13/295,140 patent/US8256656B2/en not_active Expired - Fee Related
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2012
- 2012-06-07 US US13/491,085 patent/US8292152B2/en not_active Expired - Fee Related
- 2012-08-14 US US13/585,350 patent/US8342377B2/en not_active Expired - Fee Related
- 2012-11-30 US US13/690,413 patent/US8636766B2/en not_active Expired - Fee Related
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2013
- 2013-12-31 US US14/144,921 patent/US8939343B2/en not_active Expired - Fee Related
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2014
- 2014-12-15 US US14/570,661 patent/US9027817B2/en not_active Expired - Fee Related
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2015
- 2015-04-09 US US14/682,712 patent/US9566067B2/en not_active Expired - Fee Related
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2017
- 2017-01-09 US US15/401,682 patent/US20170112498A1/en not_active Abandoned
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