ES2568210T3 - Instrumento de grapado quirúrgico - Google Patents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis, e.g. in a single operation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/10—Surgical instruments, devices or methods for applying or removing wound clamps, e.g. containing only one clamp or staple; Wound clamp magazines
- A61B17/105—Wound clamp magazines
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis, e.g. in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B17/1114—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00477—Coupling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07271—Stapler heads characterised by its cartridge
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Abstract
Un instrumento de grapado quirúrgico, que comprende: un conjunto de asidero que incluye un asidero movible para accionar la grapadora; una parte de cuerpo alargado que se extiende distalmente desde el conjunto de asidero; una parte de cabezal dispuesta adyacente a una parte distal de la parte de cuerpo alargado e incluye un conjunto de yunque y un conjunto de carcasa, el conjunto de carcasa incluye una carcasa y una guía de grapas que aloja una pluralidad de grapas; y una estructura de acoplamiento flexible que conecta la guía de grapas a la carcasa, que incluye al menos un gancho substancialmente rígido en la guía de grapas y una pestaña flexible en la carcasa que incluye una abertura para recibir el gancho, caracterizada por que la pestaña flecta radialmente hacia fuera desde la carcasa (110) cuando una superficie angulada (144) del gancho (142) se acopla a un canto (121) de una parte de pestaña distal (123) de la pestaña (120) durante la conexión de la guía de grapas al conjunto de carcasa.
Description
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DESCRIPCION
Instrumento de grapado quirurgico
Antecedentes
Campo tecnico
La presente descripcion esta relacionada generalmente con un dispositivo de grapado quirurgico para aplicar grapas quirurgicas a tejido corporal. Mas particularmente, la presente descripcion esta relacionada con un dispositivo de grapado quirurgico adecuado para realizar anastomosis circular y/o tratamiento a paredes internas de organos de tejido hueco.
Antecedentes de la tecnica relacionada
La anastomosis es el empalme quirurgico de secciones separadas de un organo hueco. Tfpicamente, un procedimiento de anastomosis sigue a una cirugfa en la que se extrae una seccion defectuosa o enferma del tejido hueco y las secciones extremas que quedan se van a empalmar. Segun el procedimiento deseado de anastomosis, las secciones extremas se pueden empalmar mediante metodos de reconstruccion de organos, ya sean circulares, de extremo con extremo o de lado con lado.
En un procedimiento de anastomosis circular, los dos extremos de las secciones de organo se empalman por medio de un instrumento de grapado que impulsa una distribucion circular de grapas a traves de la seccion extrema de cada seccion de organo y simultaneamente extrae el nucleo del interior del tejido de la distribucion circular impulsada de grapas para liberar el paso tubular. Ejemplos de instrumentos para realizar anastomosis circular de organos huecos se describen en las patentes de EE.UU. nos 7.303.106, 6.945.444, 6.053.390, 5.588.579, 5.119.983, 5.005.749, 4.646.745, 4.576.167 y 4.473.077. Tfpicamente, estos instrumentos incluyen un vastago alargado que tiene una parte de asidero en un extremo proximal para accionar el instrumento y un componente que sostiene grapas dispuesto en un extremo distal. Un conjunto de yunque, que incluye una varilla de yunque con un cabezal de yunque conectado, se monta en el extremo distal del instrumento adyacente al componente que sostiene grapas. Partes extremas opuestas de tejido del organo(s) hueco(s) a grapar se sujetan entre el cabezal de yunque y el componente que sostiene grapas. El tejido sujeto se grapa al impulsar una o mas grapas desde el componente que sostiene grapas de modo que los extremos de las grapas pasan a traves del tejido y son deformados por el yunque. Concurrentemente se hace avanzar una cuchilla anular para extraer tejido dentro del organo hueco para liberar un paso tubular dentro del organo.
Ademas de anastomosis de organos huecos, para tratar hemorroides internas en el recto se han utilizado dispositivos de grapado quirurgico para realizar anastomosis circular. Tfpicamente, durante el uso de un dispositivo de grapado circular para tratamiento hemorroidal, el cabezal de yunque y el componente que sostiene grapas del dispositivo de grapado quirurgico se insertan a traves del ano y dentro del recto con el cabezal de yunque y el componente que sostiene grapas en una posicion de apertura o sin aproximacion. Despues de eso, se utiliza una sutura en bolsa de tabaco para tirar del tejido hemorroidal interno hacia la varilla de yunque. A continuacion, el cabezal de yunque y el componente que sostiene grapas se aproximan para sujetar el tejido hemorroidal entre el cabezal de yunque y el componente que sostiene grapas. El dispositivo de grapado se dispara para retirar el tejido hemorroidal y grapar el tejido cortado. En hemorroidectoirna, se extirpan las hemorroides. La hemorroidopexia con grapas es un procedimiento quirurgico en el que el dispositivo de grapado se utiliza para extirpar tejido justo encima de las hemorroides con el fin de llevar las hemorroides de nuevo dentro del recto y reducir los smtomas. Las grapas interrumpen el flujo sangumeo de las ramificaciones arteriales hemorroidales superiores, cortando el suministro sangumeo al tejido, provocando asf que las hemorroides se contraigan.
Varias grapadoras circulares conocidas tienen un conjunto de carcasa que contiene un empujador de grapadora y una grna de grapas que aloja una pluralidad de grapas en una pluralidad de filas anulares. La grna de grapas en ciertos de estos instrumentos se suelda ultrasonicamente al conjunto de carcasa. El documento US 4646745 describe una grapadora quirurgica que comprende las caractensticas del preambulo de la reivindicacion 1. Aunque eficaces, metodos de conexion alternativos podnan ser ventajosos desde un punto de vista de fijacion y fabricacion.
Compendio
La presente invencion se define en las reivindicaciones adjuntas. La presente descripcion proporciona en un aspecto un instrumento de grapado quirurgico que incluye un conjunto de asidero, una parte de cuerpo alargado y una parte de cabezal. La parte de cabezal se dispone adyacente a una parte distal de la parte de cuerpo alargado e incluye un conjunto de yunque y un conjunto de carcasa. El conjunto de carcasa incluye una carcasa y una grna de grapas que aloja una pluralidad de grapas. Una estructura de acoplamiento flexible conecta la grna de grapas a la carcasa.
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En una realizacion, la estructura de acoplamiento flexible incluye al menos un gancho en la gma de grapas. La carcasa puede incluir una abertura de trabado configurada y dimensionada para recibir el gancho de la gma de grapas.
En otra realizacion, la estructura de acoplamiento flexible incluye una pestana flexible en la carcasa. La pestana flexible puede incluir una abertura para recibir un gancho en la gma de grapas. El gancho puede ser substancialmente ngido.
En otra realizacion, el conjunto de carcasa incluye una pluralidad de salientes que se extienden distalmente para aplicar una fuerza distal a la gma de grapas. Los salientes pueden ser compresibles por la gma de grapas.
La presente descripcion proporciona, en otro aspecto, un instrumento de grapado quirurgico que comprende un conjunto de asidero que incluye un asidero movible para accionar la grapadora, una parte de cuerpo alargado que se extiende distalmente desde el conjunto de asidero, y una parte de cabezal dispuesta adyacente a una parte distal de la parte de cuerpo alargado y que incluye un conjunto de yunque y un conjunto de carcasa. El conjunto de carcasa incluye una carcasa y una gma de grapas que aloja una pluralidad de grapas.
La gma de grapas incluye una pestana y el conjunto de carcasa incluye una region ranurada que tiene una primera parte ranurada y una segunda parte ranurada angulada con respecto a la primera parte ranurada. La pestana es movible dentro de la region ranurada para conectar la gma de grapas y el conjunto de carcasa.
En una realizacion, la primera region ranurada se extiende substancialmente axial y la segunda region ranurada se extiende substancialmente radial. En una realizacion, la segunda region ranurada tiene una seccion de diametro reducido que tiene una dimension mas pequena que una dimension exterior de la pestana.
Descripcion de los dibujos
En esta memoria se describen diversas realizaciones del dispositivo de grapado quirurgico descrito actualmente con referencia a los dibujos, en donde:
La figura 1 es una vista en perspectiva de una realizacion del instrumento de grapado quirurgico descrito actualmente en una posicion de aproximacion;
La figura 2 es una vista en despiece ordenado del conjunto de carcasa del instrumento de grapado de la figura 1;
La figura 3 es una vista ampliada de la gma de grapas de la figura 2;
La figura 4 es una vista ampliada del area de detalle designada en la figura 3 que ilustra el gancho flexible de la gma de grapas;
La figura 5 es una vista ampliada de la carcasa de la figura 1 y 2;
La figura 6 es una vista ampliada del area de detalle designada en la figura 5 que muestra la rampa y la abertura de trabado;
La figura 7 es una vista en perspectiva lateral del conjunto de carcasa de la figura 2;
La figura 8 es una vista en seccion del conjunto de carcasa de la figura 7 tomada a lo largo de las lmeas 8-8 de la
figura 7;
La figura 9 es una vista de cerca en seccion transversal del area de detalle designada en la figura 8 que muestra el acoplamiento del gancho flexible de la gma de grapas con la abertura de trabado de la carcasa;
La figura 10 es una vista en seccion transversal del conjunto de carcasa antes de la conexion de la gma de grapas que muestra la flexion del gancho flexible;
La figura 11 es una vista de cerca en seccion transversal del area de detalle designada en la figura 10;
La figura 12 es una vista de cerca similar a la figura 11 que muestra el acoplamiento de la gma de grapas y la carcasa en el conjunto final;
La figura 13 es una vista en despiece ordenado de un conjunto de carcasa y una gma de grapas de una realizacion alternativa de la presente descripcion;
La figura 14 es una vista de cerca del area de detalle designada en la figura 13 que muestra el gancho ngido de la gma de grapas;
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La figura 15 es una vista de cerca del area de detalle designada en la figura 13 que muestra la pestana de acoplamiento de la carcasa;
La figura 16 es una vista en seccion transversal de cerca que muestra el acoplamiento inicial de la gma de grapas y la carcasa de la figura 13 provocando flexion del gancho;
La figura 17 es una vista en seccion transversal de cerca similar a la figura 16 que muestra el acoplamiento de la gma de grapas y la carcasa en el conjunto final;
La figura 18 es una vista en despiece ordenado de una carcasa y gma de grapas de otra realizacion alternativa de la presente descripcion;
La figura 19 es una vista de cerca del area de detalle designada en la figura 18 que muestra el gancho de la gma de grapas;
La figura 20 es una vista en seccion transversal de cerca tomada a lo largo de 20-20 de la figura 19 que muestra el acoplamiento de la gma de grapas y la carcasa en el conjunto final;
La figura 21 es una vista en despiece ordenado de una carcasa y gma de grapas de otra realizacion alternativa de la presente descripcion;
La figura 22 es una vista de cerca del area de detalle designada en la figura 21;
La figura 23 es una vista de cerca que muestra el acoplamiento inicial de la pestana de trabado de la gma de grapas de la figura 21 en la ranura de la carcasa;
La figura 24 es una vista de cerca de la pestana de trabado de la figura 23 moviendose radialmente en la ranura de la carcasa;
La figura 25 es una vista en seccion transversal tomada a lo largo de la lmea 25-25 de la figura 24;
La figura 26 es una vista de cerca de la pestana de trabado de la figura 23 en la posicion de trabado dentro de la ranura de la carcasa; y
La figura 27 es una vista en seccion transversal tomada a lo largo de la lmea 27-27 de la figura 26.
Descripcion detallada de realizaciones
Ahora se describiran en detalle realizaciones del instrumento de grapado quirurgico descrito actualmente, con referencia a los dibujos, en los que numerales de referencia semejantes designan elementos identicos o correspondientes en cada una de las varias vistas.
Por toda esta descripcion, el termino “proximal” se referira a la parte del instrumento mas cercana al operador y el termino “distal” se referira a la parte del instrumento mas alejada del operador.
Con referencia inicial a la figura 1, una realizacion del dispositivo de grapado quirurgico descrito actualmente se muestra generalmente como numero de referencia 10. Brevemente, el dispositivo de grapado quirurgico 10 incluye un conjunto de asidero 12, una parte de cuerpo alargado 14 que incluye un tubo exterior alargado curvado 15 que se extiende desde conjunto de asidero 12 y una parte de cabezal 16 que se extiende desde el tubo exterior 15. Como alternativa, en algunos procedimientos quirurgicos, p. ej., el tratamiento de hemorroides, la parte de cuerpo puede ser substancialmente recta. La longitud, forma y/o el diametro de la parte de cuerpo 14 y la parte de cabezal 16 tambien se pueden variar para adecuarse a un procedimiento quirurgico particular.
En las realizaciones ilustradas, el conjunto de asidero 12 incluye un asidero estacionario 18, un gatillo de disparo 20, un mando de aproximacion rotatorio 22 y un indicador 24. La parte de cabezal 16 incluye un conjunto de yunque 30 y un conjunto de carcasa 31. El conjunto de yunque 30 es movible con respecto al conjunto de carcasa 31 entre posiciones de espaciamiento (sin aproximacion) y de aproximacion. El conjunto de yunque incluye un vastago de yunque montado (preferiblemente montado de manera desmontable) en un retenedor de yunque del instrumento de grapado quirurgico 10.
En funcionamiento, la rotacion del mando de aproximacion 22 provoca el movimiento del conjunto de yunque 30 con respecto al conjunto de carcasa 31 entre posiciones de espaciamiento y de aproximacion, ya que el mando de aproximacion 22 se acopla mecanicamente con un retenedor de yunque por via de bandas que se conectan al conjunto de yunque 30. Se concibe que la rotacion del mando de aproximacion 22 en un primer sentido (p. ej. sentido horario) provoque movimiento proximal del conjunto de yunque 30 a una posicion de aproximacion para sujetar tejido entre los conjuntos de yunque y de carcasa, y la rotacion del mando de aproximacion 22 en un
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segundo sentido opuesto (es decir, sentido antihorario) provoque movimiento distal del conjunto de yunque 30 a una posicion sin aproximacion.
El accionamiento del gatillo de disparo 20 (es decir, pivote en direccion hacia el asidero estacionario 18), provoca que las grapas sean eyectadas desde el conjunto de carcasa 31 hacia el conjunto de yunque 30. Esto es, el gatillo de disparo 20 se dispone en cooperacion mecanica con un empujador de grapas o parte posterior 50 de empujador (figura 2) de manera que el accionamiento del gatillo de disparo 20 provoca el avance del empujador 50 a traves de la grna 60 de grapas y hasta el contacto con las grapas 70 alojadas en una distribucion o distribuciones anulares en la grna 60 de grapas. Esto fuerza a las grapas 70 afuera de huecos o ranuras 33 de grapa adentro de huecos de deformacion de grapa del conjunto de yunque 30. El empujador 50 incluye una pluralidad de dedos de empujador que se extienden distalmente 52 que contactan con las grapas 70 para hacerlas avanzar hasta el contacto con el yunque. Una cuchilla circular 74 se retiene por rozamiento con el agujero pasante central 51 de la parte posterior 50 de empujador para asegurar fijamente la cuchilla 74 en relacion a la parte posterior 50 de empujador. La cuchilla 74 puede avanzar con la parte posterior 50 de empujador para cortar tejido entre las filas anulares de grapas 70. El agujero pasante 51 se coloca de manera deslizante alrededor de la parte de grna interior 35 de la carcasa 31. La seccion cilmdrica distal 53 del empujador 50 se coloca de manera deslizante dentro de la seccion cilmdrica distal 34 de la carcasa 31. El extremo proximal de la parte posterior 50 de empujador incluye miembros 55 que se configuran para acoplarse de manera trabada con un enlace de empujador (no se muestra). La carcasa 31 tambien puede incluir orificios de respiradero 32.
En los numeros de patente de EE.UU. de propiedad conjunta 7.303.106, 7.234.624 y 7.168.604 se describen detalles adicionales de las caractensticas del dispositivo de grapado quirurgico 10, tal como el conjunto de aproximacion y el conjunto de disparo.
Las figuras 2-12 ilustran una primera realizacion de la estructura de acoplamiento flexible para conectar la grna 60 de grapas al conjunto de carcasa 31. Con referencia inicial a las figuras 3 y 4, un gancho flexible 80 en una superficie exterior de la grna 60 de grapas se extiende en sentido proximal, terminando preferiblemente en el extremo proximal de la grna 60 de grapas. El gancho 80 es proximal del reborde 61 de la grna 60 de grapas. El gancho puede estar substancialmente a ras con la superficie exterior 63 de la grna 60 de grapas. El gancho 80 tiene una superficie proximal angulada 82, angulada con respecto a una region axial o longitudinal 89 que se extiende desde la grna 60 de grapas. Preferiblemente, el gancho 80 se forma integralmente con la grna 60 de grapas, sin embargo, como alternativa, podna ser un elemento o elementos separados conectados a la grna 60 de grapas. Preferiblemente se proporcionan dos o mas ganchos para acoplarse en regiones espaciadas a lo largo de la carcasa 31. Por ejemplo se pueden colocar dos ganchos separados aproximadamente 180 grados, tres ganchos separados aproximadamente 120 grados, etc. La realizacion ilustrada muestra cuatro ganchos 80 espaciados aproximadamente 90 grados. Tambien se contemplan otros espaciamientos, incluyendo espaciamientos no equidistantes de los ganchos.
Haciendo referencia a las figuras 5, 6 y 9, el conjunto de carcasa 31 incluye aberturas de trabado 36, preferiblemente ligeramente espaciadas proximalmente del canto distal 31a de la carcasa 31, cada una configurada y dimensionada para recibir un gancho 80. La rampa o pared angulada 37 en la pared interior de la carcasa 31 facilita el acoplamiento de gancho como se describe mas adelante.
Como se puede apreciar al ver las figuras 10-12, durante el ensamblaje cuando la grna 60 de grapas se conecta al conjunto de carcasa 31 por colocacion en la direccion de la flecha A, inicialmente cada gancho 80 flecta radialmente hacia dentro (hacia abajo en la orientacion de la figura 10) en la direccion de la flecha B cuando la superficie de la pared angulada 37 de la carcasa 31 se acopla con la superficie angulada 82 del gancho 80 de la grna 60 de grapas. Con suficiente avance distal en la fabricacion en la direccion de la flecha A, el extremo proximal del gancho 80 pasa mas alla de la superficie angulada 37 y mas alla de la pared 38 y entonces ya no se predispone radialmente hacia dentro (hacia abajo en la vista de la figura 11), se puede mover radialmente hacia fuera (hacia arriba) en la direccion de la flecha C a su estado sin tension normal para extenderse dentro de la abertura de trabado 36. Como se muestra, en esta posicion, el acoplamiento del hombro 84 del gancho 80 con la superficie de pared 37a impide el movimiento distal de la grna 60 de grapas para retenerla en una posicion asegurada a la carcasa 31 (vease tambien la figura 9). Durante el uso, una fuerza distal aplicada a la grna de grapas durante la manipulacion del instrumento o disparo de las grapas no desprendera la grna 60 de grapas del conjunto de carcasa 31 dado que el movimiento distal esta prohibido por la pared 37a. Cada uno de los ganchos 80 se acopla a una abertura de trabado correspondiente 36 de la misma manera a como se ha descrito anteriormente. Observese que preferiblemente el gancho 80 no se extiende mas alla de confines exteriores (diametro exterior) de la abertura 36 para no extenderse pasando la superficie exterior 39 de la carcasa 31.
En la realizacion alternativa ilustrada en las figuras 13-17, se utiliza un gancho ngido. La carcasa 110 es identica a la carcasa 31 de la figura 2 excepto por la estructura que coopera con los ganchos de la grna de grapas. Mas espedficamente, la carcasa 110 tiene una pestana flexible 120 formada por recortes 122, 124 en el extremo distal 112 de la carcasa 110. La pestana flexible 120 tiene una abertura de trabado 126 formada en la misma. La grna 140 de grapas es identica a la grna 60 de grapas de la figura 2 excepto por la configuracion de gancho. Mas
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espedficamente, la grna 140 de grapas tiene un gancho 142 formado en la misma, que preferiblemente es substancialmente ngido. Como se muestra, el gancho 142 se extiende proximalmente desde la grna 140 de grapas y en su extremo proximal tiene una superficie proximal angulada 144 y una superficie vertical 147 substancialmente perpendicular a un eje longitudinal de la grna 140 de grapas. Una region axial o longitudinal 145 se extiende distalmente. Se proporciona una pluralidad de pestanas 120 en la carcasa 110, cada una dimensionada y configurada para recibir un gancho 142.
Como se puede apreciar al ver las figuras 16 y 17, cuando la grna 140 de grapas se conecta durante el ensamblaje al conjunto de carcasa 110 por colocacion en la direccion de la flecha D, la pestana 120 de la carcasa 110 flecta inicialmente radialmente (hacia arriba en la orientacion de la figura 16) alejandose de la carcasa 110 en la direccion de la flecha E cuando la superficie angulada 144 del gancho 142 se acopla al canto 121 de la parte de pestana distal 123 de la pestana 120. El canto 121 puede ser opcionalmente angulado para acoplarse a la superficie angulada 142 del gancho 140. Con suficiente avance distal en la fabricacion en la direccion de la flecha D, la pared angulada 144 del gancho 140 pasa mas alla del canto 121 y mas alla de la parte de pestana distal 123, y entonces la parte de pestana distal 123, ya no predispuesta hacia arriba (radialmente), se puede mover hacia abajo (hacia dentro hacia el eje longitudinal) en la direccion de la flecha G hacia la carcasa 110 por lo que el gancho 142 se asienta dentro de la abertura de trabado 126. Como se muestra, en esta posicion, el acoplamiento del hombro 145a del gancho 142 con la pared 127 de la parte de pestana distal 123 impide el movimiento distal de la grna 140 de grapas para retenerla en una posicion. Durante el uso, una fuerza distal aplicada a la grna 140 de grapas durante la manipulacion del instrumento o disparo de las grapas no desprendera la grna 140 de grapas del conjunto de carcasa 110 dado que el movimiento distal esta prohibido por la pared 127.
En la realizacion alternativa de las figuras 18-20, se proporcionan bultos de acoplamiento flexibles. La grna 170 de grapas es identica a la grna 60 de grapas de la figura 2 y la carcasa 180 es identica a la carcasa 31 de la figura 2 excepto por la estructura que coopera con los ganchos de la grna de grapas y los bultos flexibles. Mas espedficamente, la grna 170 de grapas tiene un gancho flexible 172 que se extiende proximalmente. La carcasa 180 tiene una abertura de trabado 182 dimensionada y configurada para recibir el gancho 172. El gancho 172 flecta a medida que se inserta pasando la pared 183 colocada distal de la abertura de trabado 182. El extremo distal de la pared 183 preferiblemente tiene una superficie angulada 185 que coopera con la superficie angulada 174 del gancho 172 para facilitar la insercion. Durante el ensamblaje, la pared 183 predispone el gancho 172 radialmente hacia dentro de una manera similar al gancho 80 de la figura 2 para permitirle pasar proximalmente mas alla de la pared 183, y entonces el gancho 172 regresa a su posicion normal recibido en la abertura de trabado 182 como se muestra en la figura 20. Durante el uso, una fuerza distal aplicada a la grna 170 de grapas no desprendera la grna 170 de grapas del conjunto de carcasa 180 dado que el movimiento distal esta prohibido por el acoplamiento del hombro 175 con la pared 189.
La carcasa 180 tambien puede tener una serie de salientes o bultos flexibles 186 para mejorar la fijacion de la grna 170 de grapas. Los bultos 186 se extienden distalmente del canto distal 187 de la carcasa 180. Cuando la grna 170 de grapas se conecta a la carcasa 180, los salientes o bultos flexibles 186 se presionan hacia dentro. Como resultado, tras el ensamblaje, los bultos 186 proporcionan una fuerza distal en la grna 170 de grapas, forzando de ese modo al gancho 172 (hombro 175) distalmente contra la superficie 189 de la pared 183 en la medida que haya un juego entre el hombro 175 del gancho 172 y la pared 189 adyacente a la abertura de trabado 182 cuando se ensamblan. Por consiguiente, los bultos/salientes 186 funcionan de manera similar a un resorte que predispone la grna 170 de grapas en sentido distal cuando se ensambla en la carcasa 180. Se debe apreciar que los bultos o salientes se pueden proporcionar en las otras realizaciones de la carcasa descrita en esta memoria para proporcionar una fuerza de predisposicion distal si fuera deseable.
Las figuras 21-27 ilustran otra realizacion alternativa para conectar la grna de grapas al conjunto de carcasa utilizando un montaje de bayoneta. La carcasa 210 es identica a la carcasa 31 de la figura 2 excepto por la estructura que coopera con las pestanas de la grna de grapas. Mas espedficamente, la carcasa 210 tiene una region ranurada 212. La region ranurada 212 se extiende proximalmente desde un canto distal 214 de la carcasa 210 en una direccion (axial) longitudinal que forma una region ranurada axial 212a de la ranura 212. La ranura 212 tambien tiene una region que se extiende radialmente 212b transversal a la region axial 212a, formando de ese modo una configuracion de ranurado substancialmente con forma de L. Un entrante de bloqueo 213 se extiende adentro de una region radial 212b. Para facilitar la explicacion, el entrante o rebaje de bloqueo 213 se puede considerar como que divide la region radial 212b en dos secciones.
La grna 230 de grapas es identica a la grna 60 de grapas de la figura 2 excepto por la estructura que se acopla a la carcasa 210 para conexion a la misma. Mas espedficamente, la grna 230 de grapas tiene una pestana de trabado 232 en un canto proximal 234. Como se puede apreciar al ver las figuras 23-27, cuando la grna 230 de grapas se conecta durante el ensamblaje al conjunto de carcasa 110 por colocacion en la direccion de la flecha E, la pestana de trabado 232 entra a la region axial 212a de la ranura 212. Despues de que la pestana de trabado 232 sea insertada en el canto 212c de la region axial 212a (vease la figura 23), la grna 230 de grapas se rota entonces y la pestana 232 se mueve en la region radial 212b de la ranura 212 en la direccion de la flecha F de la figura 24. La rotacion continua hasta que la pestana 232 es forzada a pasar el rebaje de bloqueo 213 como se muestra en la
figura 26. Esto es, cuando la pestana 232 se mueve a lo largo de la region radial 212b de la ranura 212, es forzada a pasar el rebaje de trabado 213 que forma una region de diametro reducido 212f de la region 212b de la ranura 212 (la region 212f tiene una dimension mas pequena que una dimension transversal de la pestana de trabado 232). Una vez movida pasando esta region de diametro reducido 212f, la region impide la retirada de la pestana de trabado 5 232, es decir, el movimiento en la direccion opuesta a la direccion de la flecha F, a menos que se aplique una fuerza
suficiente por rotacion de la grna de carcasa 230 para vencer el rebaje de bloqueo (entrante) 213 y pase por la region de diametro reducido. Observese que la estructura se puede proporcionar de modo que ya sea la pestana 232 flecte o la pared entrante que forma el rebaje de bloqueo 213 flecte de modo que la pestana se pueda mover pasando el entrante. Durante el uso, una fuerza distal aplicada a la grna 230 de grapas durante la manipulacion del 10 instrumento o disparo de las grapas no desprendera la grna 230 de grapas del conjunto de carcasa 210 dado que el movimiento distal esta prohibido por la pared 233 y la desconexion requiere la rotacion inversa de la grna 230 de grapas para retirarla de la ranura 212.
Se entendera que a las realizaciones descritas en esta memoria se les pueden realizar diversas modificaciones. Por lo tanto, la descripcion anterior no se debe interpretar como limitadora, sino meramente como ejemplificaciones de 15 realizaciones descritas. Los expertos en la tecnica concebiran otras modificaciones dentro del alcance de las reivindicaciones que aqrn se acompanan.
Claims (6)
- REIVINDICACIONES1. Un instrumento de grapado quirurgico, que comprende:un conjunto de asidero que incluye un asidero movible para accionar la grapadora;una parte de cuerpo alargado que se extiende distalmente desde el conjunto de asidero;5 una parte de cabezal dispuesta adyacente a una parte distal de la parte de cuerpo alargado e incluye un conjunto de yunque y un conjunto de carcasa, el conjunto de carcasa incluye una carcasa y una grna de grapas que aloja una pluralidad de grapas; yuna estructura de acoplamiento flexible que conecta la grna de grapas a la carcasa, que incluye al menos un gancho substancialmente ngido en la grna de grapas y una pestana flexible en la carcasa que incluye una abertura para 10 recibir el gancho,caracterizada por que la pestana flecta radialmente hacia fuera desde la carcasa (110) cuando una superficie angulada (144) del gancho (142) se acopla a un canto (121) de una parte de pestana distal (123) de la pestana (120) durante la conexion de la grna de grapas al conjunto de carcasa.
- 2. El instrumento de la reivindicacion 1, en donde la carcasa incluye una abertura de trabado configurada y 15 dimensionada para recibir el gancho de la grna de grapas.
- 3. El instrumento de cualquiera de las reivindicaciones 1 o 2, en donde la pestana flexible se coloca en el extremo mas distal de la carcasa.
- 4. El instrumento de cualquier reivindicacion precedente, que comprende ademas al menos un miembro saliente flexible compresible por la grna de grapas.20 5. El instrumento de cualquier reivindicacion precedente, en donde el conjunto de carcasa incluye una pluralidadde salientes que se extienden distalmente para aplicar una fuerza distal a la grna de grapas.
- 6. El instrumento de la reivindicacion 5, en donde los salientes son compresibles por la grna de grapas.
- 7. El instrumento de la reivindicacion 5 o la reivindicacion 6, en donde los salientes se extienden desde un extremo mas distal de la carcasa.
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| US25554409P | 2009-10-28 | 2009-10-28 | |
| US255544P | 2009-10-28 | ||
| US899113 | 2010-10-06 | ||
| US12/899,113 US8322590B2 (en) | 2009-10-28 | 2010-10-06 | Surgical stapling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2568210T3 true ES2568210T3 (es) | 2016-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES10251860.2T Active ES2568210T3 (es) | 2009-10-28 | 2010-10-27 | Instrumento de grapado quirúrgico |
Country Status (6)
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| US (4) | US8322590B2 (es) |
| EP (2) | EP3028651A1 (es) |
| JP (2) | JP5656559B2 (es) |
| AU (1) | AU2010235863B2 (es) |
| CA (1) | CA2717990C (es) |
| ES (1) | ES2568210T3 (es) |
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| US7837080B2 (en) | 2008-09-18 | 2010-11-23 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument with device for indicating when the instrument has cut through tissue |
| US7954686B2 (en) * | 2008-09-19 | 2011-06-07 | Ethicon Endo-Surgery, Inc. | Surgical stapler with apparatus for adjusting staple height |
| US20100084453A1 (en) | 2008-10-03 | 2010-04-08 | Changzhou Waston Medical Appliance Co., Ltd | Circular stapler |
| US7918377B2 (en) | 2008-10-16 | 2011-04-05 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument with apparatus for providing anvil position feedback |
| US8231042B2 (en) | 2008-11-06 | 2012-07-31 | Tyco Healthcare Group Lp | Surgical stapler |
| US7886951B2 (en) | 2008-11-24 | 2011-02-15 | Tyco Healthcare Group Lp | Pouch used to deliver medication when ruptured |
| US8770460B2 (en) | 2008-12-23 | 2014-07-08 | George E. Belzer | Shield for surgical stapler and method of use |
| US8408441B2 (en) * | 2009-01-06 | 2013-04-02 | Covidien Lp | Surgical stapler |
| US8066167B2 (en) | 2009-03-23 | 2011-11-29 | Ethicon Endo-Surgery, Inc. | Circular surgical stapling instrument with anvil locking system |
| US8127976B2 (en) * | 2009-05-08 | 2012-03-06 | Tyco Healthcare Group Lp | Stapler cartridge and channel interlock |
| US8418909B2 (en) | 2009-06-02 | 2013-04-16 | Covidien Lp | Surgical instrument and method for performing a resection |
| US8267301B2 (en) * | 2009-08-19 | 2012-09-18 | Tyco Healthcare Group Lp | Surgical stapler |
| US8322590B2 (en) * | 2009-10-28 | 2012-12-04 | Covidien Lp | Surgical stapling instrument |
| US8136712B2 (en) * | 2009-12-10 | 2012-03-20 | Ethicon Endo-Surgery, Inc. | Surgical stapler with discrete staple height adjustment and tactile feedback |
| US9168042B2 (en) * | 2012-01-12 | 2015-10-27 | Covidien Lp | Circular stapling instruments |
| US9010609B2 (en) * | 2012-01-26 | 2015-04-21 | Covidien Lp | Circular stapler including buttress |
| US9192383B2 (en) * | 2013-02-04 | 2015-11-24 | Covidien Lp | Circular stapling device including buttress material |
| US9414839B2 (en) * | 2013-02-04 | 2016-08-16 | Covidien Lp | Buttress attachment for circular stapling device |
-
2010
- 2010-10-06 US US12/899,113 patent/US8322590B2/en active Active
- 2010-10-15 AU AU2010235863A patent/AU2010235863B2/en not_active Ceased
- 2010-10-19 CA CA2717990A patent/CA2717990C/en not_active Expired - Fee Related
- 2010-10-27 EP EP16150792.6A patent/EP3028651A1/en not_active Withdrawn
- 2010-10-27 JP JP2010241567A patent/JP5656559B2/ja active Active
- 2010-10-27 EP EP10251860.2A patent/EP2316354B1/en active Active
- 2010-10-27 ES ES10251860.2T patent/ES2568210T3/es active Active
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2012
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2014
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- 2014-11-07 US US14/535,891 patent/US9592051B2/en active Active
- 2014-11-25 JP JP2014237771A patent/JP2015044055A/ja not_active Ceased
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| Publication number | Publication date |
|---|---|
| EP2316354A3 (en) | 2013-12-04 |
| JP5656559B2 (ja) | 2015-01-21 |
| US20130056517A1 (en) | 2013-03-07 |
| US20140158744A1 (en) | 2014-06-12 |
| AU2010235863B2 (en) | 2015-05-28 |
| US8322590B2 (en) | 2012-12-04 |
| JP2011092718A (ja) | 2011-05-12 |
| EP3028651A1 (en) | 2016-06-08 |
| JP2015044055A (ja) | 2015-03-12 |
| US20150060523A1 (en) | 2015-03-05 |
| AU2010235863A1 (en) | 2011-05-12 |
| US8684252B2 (en) | 2014-04-01 |
| US8905289B2 (en) | 2014-12-09 |
| CA2717990A1 (en) | 2011-04-28 |
| CA2717990C (en) | 2017-08-15 |
| US20110095070A1 (en) | 2011-04-28 |
| EP2316354A2 (en) | 2011-05-04 |
| EP2316354B1 (en) | 2016-03-16 |
| US9592051B2 (en) | 2017-03-14 |
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