ES2350912T3 - Material de refuerzo de sutura para un dispositivo de sutura automático. - Google Patents

Material de refuerzo de sutura para un dispositivo de sutura automático. Download PDF

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ES2350912T3
ES2350912T3 ES04747929T ES04747929T ES2350912T3 ES 2350912 T3 ES2350912 T3 ES 2350912T3 ES 04747929 T ES04747929 T ES 04747929T ES 04747929 T ES04747929 T ES 04747929T ES 2350912 T3 ES2350912 T3 ES 2350912T3
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thread
suture
tubular
automatic
reinforcement material
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Hiroyuki Shimoji
Hitoshi Ohtani
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Gunze Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L17/00Materials for surgical sutures or for ligaturing blood vessels ; Materials for prostheses or catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical 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
    • A61B17/07207Surgical 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 the staples being applied sequentially
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/04Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/04Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/04Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0483Hand-held instruments for holding sutures
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical 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
    • A61B17/07292Reinforcements for staple line, e.g. pledgets
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/04Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0469Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
    • A61B2017/0477Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery with pre-tied sutures

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Materials Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Materials For Medical Uses (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)
  • Details Of Garments (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10), en el que ambos extremos de uno o dos materiales laminares están cosidos utilizando un punto de cadeneta con un único hilo para conformar una forma tubular, en el que dicho uno o dos extremos de hilo en uno o dos extremos de costura (2) están extendidos adecuadamente y en el que el extremo de hilo extendido se hace pasar a través de un bucle anterior (3) continuo hasta el extremo del hilo, impidiendo así que se desenrede un hilo.

Description

Material de refuerzo de sutura para un dispositivo de sutura automático.
Campo técnico
La presente invención se refiere a un material de refuerzo de sutura tubular adecuado para su utilización en dispositivos de sutura automática que se utilizan ampliamente en operaciones quirúrgicas, etc. Más específicamente, la presente invención se refiere a un material de refuerzo de sutura tubular con el que se obtiene fácilmente una forma tubular, la productividad es alta y la retirada del hilo se consigue de manera sencilla.
Antecedentes de la invención
Hasta ahora, para suturar tejidos se han utilizado dispositivos de sutura automáticos de tipo grapadora que contienen una pluralidad de grapas. Sin embargo, cuando se aplica un dispositivo de sutura de esta clase a la cirugía pulmonar, etc., pueden producirse fugas de aire desde el área suturada. Además, cuando se aplica a tejidos blandos, pueden surgir problemas de daños o desgarros de tejidos.
Con el fin de resolver los problemas anteriores, la solicitante tiene ya diversas publicaciones que se refieren a materiales de refuerzo de sutura tubular que se han de fijar a una parte de grapa del dispositivo de sutura, impidiendo así la fuga de aire desde el área suturada, reforzando el área, etc. (por ejemplo, el modelo de utilidad registrado japonés nº 2604025; las patentes japonesas nº 3136392, nº 3237749 y nº 3237750; las publicaciones de patentes japonesas no examinadas nº 1997-24050, nº 1997-308635, nº 2000-157622, nº 2000-316963 y nº 2001-70433; y la patente US nº 5.814.057).
Como otras publicaciones de la solicitante que se refieren a materiales de refuerzo de sutura tubular, pueden mencionarse la patente japonesa nº 3040930 y la publicación de patente japonesa no examinada nº 1996-299427.
Las publicaciones mencionadas anteriormente describen una estructura en la que un material laminar, tal como un tejido no tejido o una película realizados en un material biodegradable y bioabsorbible, se convierte en una forma tubular, o una estructura en la que un tejido no tejido realizado en un material biodegradable y bioabsorbible y un tejido estirable se combinan de una sola pieza para crear una forma tubular. La forma tubular se obtiene, por ejemplo, por un procedimiento para adherir temporalmente ambos extremos (ambos bordes) de materiales laminares apilados y un procedimiento para hilvanar ambos extremos de los mismos utilizando puntadas bastas. Más específicamente, puede mencionarse como ejemplo un cosido continuo en el que los lados anterior y posterior de los materiales laminares apilados están a su vez cosidos.
La adhesión o hilvanado temporal del material laminar, como se describe anteriormente, se realiza con la finalidad de separar fácilmente un material de refuerzo de sutura que debe retirarse con una lesión respecto de un material de refuerzo de sutura que debe dejarse en un cuerpo humano, cuando la lesión se retira del cuerpo humano después de que la región afectada se haya suturado y la lesión se aísle de tejidos normales utilizando un dispositivo de sutura automática provisto de un material de refuerzo de sutura.
Sin embargo, el material de refuerzo de sutura tubular fabricado utilizando adhesión temporal es desventajoso debido a que los materiales laminares unidos por adhesión tienden a separarse uno de otro, y el material de refuerzo de sutura tubular fabricado utilizando un cosido continuo es desventajoso porque la manera de coser requiere mucho tiempo y habilidad y la retirada del hilo es difícil dependiendo de la clase de material laminar, el paso de costura, etc.
Sumario de la invención
El objetivo de la invención consiste en superar los inconvenientes descritos anteriormente. La invención proporciona un nuevo material de refuerzo de sutura para un dispositivo de sutura automática que puede fabricarse sin requerir una habilidad avanzada y del que se puede retirar muy suavemente un hilo con independencia de la clase de material utilizada y del paso de costura del material de refuerzo de sutura, como se reivindica en las reivindicaciones 1, 7 y 8, con formas de realización preferidas como las referidas en las reivindicaciones dependientes 2 a 6.
Breve descripción de los dibujos
La figura 1 representa esquemáticamente un estilo de cosido de la invención.
La figura 2 representa esquemáticamente un estilo de cosido de la invención.
La figura 3 representa esquemáticamente un estilo de cosido de la invención.
La figura 4 representa esquemáticamente un estilo de cosido de la invención.
La figura 5 representa esquemáticamente un estilo de cosido de la invención.
La figura 6 representa esquemáticamente un estilo de cosido de la invención.
La figura 7 representa esquemáticamente un estilo de cosido de la invención.
La figura 8 es una vista en perspectiva que representa una estructura de un material de refuerzo de sutura según una forma de realización de la invención.
La figura 9 es una vista en perspectiva que representa una estructura de un material de refuerzo de sutura según otra forma de realización de la invención.
La figura 10 es una vista frontal que representa un dispositivo de sutura automática provisto del material de refuerzo de sutura de la invención.
La figura 11 es una vista frontal parcialmente ampliada que representa el procedimiento de ajustar el material de refuerzo de sutura de la invención de la figura 10 a un dispositivo de sutura automática.
La figura 12 es una vista en perspectiva que representa una estructura ejemplificativa de un material de refuerzo de sutura.
La figura 13 es una vista en perspectiva que representa un ejemplo de un material de refuerzo de sutura que impide la retirada de un extremo o extremos de hilo.
La figura 14 es una vista en perspectiva que representa otro ejemplo de un material de refuerzo de sutura que impide la retirada de un extremo o extremos de hilo de la invención.
La figura 15 es una vista en perspectiva que representa otro ejemplo de un material de refuerzo de sutura que impide la retirada de un extremo o extremos de hilo de la invención.
La figura 16 es una vista en perspectiva que representa una estructura de un material de refuerzo de sutura de la invención en la que está conformado un saliente.
Descripción de los números de referencia
En las figuras 1 a 16, los números de referencia indican lo que sigue: 1, extremo de hilo al comienzo de la costura; 2, extremo de hilo al final de la costura; 3, bucle; 4, material de refuerzo de sutura tubular; 5, tejido no tejido biodegradable y biorreabsorbible; 6, tejido powernet (tejido estirable); 7, puntadas en el lado anterior; 8, puntadas en el lado posterior; 9, tapón; 10, dispositivo de sutura automática; 11, cartucho; 12, marco; 13, nudo; 14, saliente; y 15, nudo.
Descripción detallada de la invención
A continuación, se describirá con detalle la invención.
Una material laminar de la invención está realizado en un material adecuadamente seleccionado de entre materiales no bioabsorbibles, tales como poliamida, poliéster, silicona, fluororresina, etc., y materiales biodegradables y bioabsorbibles, tales como ácido poliglicólico, ácido poliláctico, un copolímero de ácido glicólico y ácido láctico, un copolímero de ácido glicólico y caprolactona, o una mezcla de los mismos, poliparadioxanona, policaprolactona, quitina, tejidos animales y similares. Los ejemplos de formaciones del material laminar incluyen un material tricotado, un material tejido, un tejido no tejido, una película, una lámina, una lámina de esponja, etc., realizados en los materiales no bioabsorbibles y/o los materiales biodegradables y bioabsorbibles mencionados anteriormente.
Los materiales particularmente preferidos incluyen tejidos no tejidos realizados en ácido poliglicólico, que es excelente en flexibilidad, transpirabilidad, rigidez, espesor, propiedades de absorción de sangre, facilidad de penetración de grapas e hidrolizabilidad. Dichos tejidos no tejidos pueden prepararse por un procedimiento adecuado, tal como un procedimiento de punzado de agujas, un procedimiento de soplado en fusión o similar.
El material de refuerzo de sutura de la invención se convierte en una forma tubular cosiendo ambos extremos de un material laminar después de que se pliegue el material laminar o apilando dos materiales laminares, y cosiendo a continuación ambos extremos de los materiales laminares apilados. Cuando dos materiales laminares se apilan para formar un material tubular, uno de los dos materiales laminares puede ser un material estirable. Los ejemplos preferidos de tales materiales laminares estirables incluyen materiales tricotados o tejidos con estirabilidad en direcciones longitudinal y/o transversal, en los que hilos de caucho, hilos elásticos basados en poliuretano, hilos rizados e hilos voluminosos, etc., están adecuadamente intertricotados o intertejidos. Un material de refuerzo de sutura preparado combinando un material estirable con un material no estirable facilita la adaptación del material de refuerzo de sutura a un dispositivo de sutura automática, el ajuste (corrección de posición) después de la adaptación, etc., y, por tanto, es preferible.
Aunque no existe limitación del modo de tricotar o de tejer el material laminar estirable, un tejido powernet producido por tricotado de urdimbre de hilos estirables obtenidos cubriendo hilos de poliuretano por hilos de nylon es preferible en vista del corte fácil, la costura fácil durante la formación de un material tubular, la estabilidad de forma, etc.
En caso de utilizar un material laminar, el material tubular puede obtenerse cosiendo uno a otro ambos extremos de un material laminar que se corta según las dimensiones de la superficie exterior de un dispositivo de sutura, después de que se pliegue el material laminar. Alternativamente, en el caso de utilizar dos materiales laminares, el material tubular puede obtenerse apilándolos y cosiendo a continuación uno a otro ambos extremos de los materiales laminares.
El término "tubular" utilizado en la presente memoria indica que ambos extremos de un material laminar se unen uno a otro, y una forma tubular puede ser un cilindro, un prisma o un plano.
Los procedimientos de costura para obtener la forma tubular pueden seleccionarse adecuadamente de entre el procedimiento para coser ambos extremos del material o materiales laminares en paralelo, el procedimiento para coser la parte de la punta de los mismos de una manera estrechada, o el procedimiento para coser la parte de la punta de los mismos de una manera similar a una bolsa, etc. La parte de la punta estrechada o similar a una bolsa es ventajosa puesto que el material tubular puede acoplarse fácilmente a un dispositivo de sutura.
Aunque cualesquiera hilos utilizados para coser paños pueden utilizarse con carácter general para coser ambos extremos, resultan preferidas las suturas quirúrgicas biodegradables y bioabsorbibles, tales como las fabricadas de ácido poliglicólico, un copolímero de ácido glicólico y ácido láctico, un copolímero de ácido láctico y coprolactona, etc. Esto es debido a que el material de refuerzo de sutura es para uso en aplicaciones médicas y el material podría dejarse erróneamente en el cuerpo humano.
La invención se caracteriza por el uso de un cosido de cadeneta (cosido de intramallado) con un solo hilo como estilo de cosido. El cosido de cadeneta (cosido de intramallado) con un único hilo crea puntadas en las que se forman bucles con un único hilo.
Los Ejemplos específicos de estilos de cosido de la invención se representan en las figuras 1 a 7, pero la invención no está limitada a los mismos. El término "lado de inserción de aguja" utilizando a continuación indica el lado de inserción de la aguja de los materiales laminares apilados, es decir, el lado superior como se ve en las figuras, y el término "lado posterior" indica el lado opuesto al lado de inserción de aguja de los materiales laminares apilados, es decir, el lado inferior como se ve en las figuras. En las figuras 1 a 6, no se ilustran los materiales laminares apilados.
La figura 1 representa que un bucle 3 pasa a través de los materiales laminares apilados desde el lado de inserción de la aguja y a continuación se asegura por intramallado con un bucle sucesivo en el lado posterior de los materiales laminares apilados. En la invención, el "cosido de cadeneta (cosido de intramallado)" indica que un bucle de hilo pasa a través de otro bucle formado por el mismo hilo.
La figura 2 representa que un bucle 3 pasa hacia dentro de los materiales laminares apilados desde el lado de inserción de aguja, aparece en el lado de inserción de aguja a través de una parte de los materiales laminares apilados y a continuación se asegura por intramallado con un bucle sucesivo en el siguiente punto de penetración de aguja. A continuación, la frase "que aparece en el lado de inserción de aguja después de pasar a través de una parte del material laminar" incluye el caso en el que un bucle aparece en el lado de inserción de aguja pasando a través de la superficie extrema de los materiales laminares apilados, el caso en el que un bucle aparece en el lado de inserción de aguja penetrando en los materiales laminares, etc.
La figura 3 representa que un bucle 3 pasa a través de los materiales laminares apilados desde el lado de inserción de aguja, avanza ligeramente, pasa a través de los materiales laminares apilados para aparecer en el lado de inserción de la aguja, y a continuación se asegura por intramallado con un bucle sucesivo en el siguiente punto de penetración de aguja en el lado de inserción de aguja del material laminar.
La figura 4 representa que un bucle 3 entra en los materiales laminares apilados desde el lado de inserción de la aguja, pasa a través de una parte de los materiales laminares apilados para aparecer en el lado de inserción de la aguja y a continuación se asegurar por intramallado con un bucle sucesivo en el siguiente punto de penetración de aguja en una línea de formación de puntadas (línea cosida).
La figura 5 representa un ejemplo modificado del estilo de cosido de la figura 1, formando un patrón en zig-zag.
La figura 6 representa que un bucle 3 pasa de través para aparecer en el lado posterior de los materiales laminares apilados desde el lado de inserción de aguja, retrocede ligeramente, pasa a través de los materiales laminares apilados para aparecer en el lado de inserción de aguja, y a continuación el bucle 3 se asegura por intramallado con un bucle sucesivo 3 que pasa a través de los materiales laminares apilados.
La figura 7 representa que un bucle 3 atraviesa los materiales laminares apilados y un bucle que ha pasado ya a través de los materiales laminares apilados para aparecer en el lado de inserción de aguja de los materiales laminares apilados, y además el bucle que pasa de través se extiende hasta el siguiente punto de penetración de aguja a través de la superficie extrema de los materiales laminares apilados.
En cada figura, el número de referencia 1 indica un extremo de hilo al inicio de la costura y el número de referencia 2 indica un extremo de hilo al final de la costura. En la figura 1, los números de referencia indican lo que sigue: 3, un bucle; 7, puntadas en el lado frontal, y 8, puntadas en el lado posterior.
Cada ejemplo anterior representa un cosido de cadeneta (cosido de intramallado) hecho por un único hilo. En el cosido de cadeneta (cosido de intramallado), tirando del extremo o extremos 2 de hilo en el extremo o extremos de costura, el hilo o hilos se retiran de los bucles formados y así las costuras realizadas se descosen suavemente. Tal costura puede hacerse a mano y, de hecho, puede utilizarse también una máquina de coser comercialmente disponible. En el último caso, la costura puede hacerse muy eficientemente.
Resulta preferido extender el extremo del hilo en una longitud adecuada de modo que una parte del material de refuerzo de sutura a retirar con la lesión (por ejemplo, tejido powernet) pueda separarse fácilmente de una parte del material de refuerzo de sutura a dejar en el cuerpo humano (por ejemplo, un material biodegradable y bioabsorbible). Los extremos extendidos del hilo en los extremos de costura pueden atarse en forma de un anillo. Como otro ejemplo, el extremo o extremos del hilo en el extremo o extremos de costura pueden atarse al material laminar (por ejemplo, tejido powernet) y los extremos extendidos del hilo en los extremos de costura pueden atarse en forma de un anillo (anular). En este caso, el hilo puede retirarse fácilmente y el material laminar (por ejemplo, tejido powernet) puede retirarse fácilmente con el hilo de coser después de una operación quirúrgica.
Con el fin de impedir que el hilo se extraiga involuntariamente del material de refuerzo de sutura, puede disponerse un tapón en un bucle en el lado del extremo o extremos del hilo en el extremo o extremos de costura, el extremo o extremos del hilo pueden pasar a través del bucle anterior continuo hasta el extremo o extremos del hilo en el extremo o extremos de costura, o el bucle en el lado del extremo o extremos de costura puede pasarse a través del bucle inmediatamente anterior y puede atarse con un solo nudo.
Los dispositivos de sutura automática a los que puede aplicarse el material de refuerzo de sutura de la invención incluyen MULTIFIRE GIA80, MULTIFIRE GIA60, MULTIFIRE GIA50 y MULTIFIRE GIA90P (fabricados por U.S. SURGICAL), PROXIMATE LINEAR CUTTER 55 mm y PROXIMATE LINEAR CUTTER 75 mm (fabricados por Ethicon Endo-Surgery), ENDO GIA(2)30, ENDO GIA(2)45 y ENDO GIA(2)60 (fabricados por U.S. SURGICAL), y ENDOPATH END CUTTER ETS45 y ENDOPATH END CUTTER ETS EZ45 (fabricados por Ethicon Endo-Surgery).
El material de refuerzo de sutura de la invención se aplica a un dispositivo de sutura encapsulándolo (encajándolo) en un cartucho que contiene una grapa o en un marco que presenta una ranura de recepción de grapa, o bien en ambos.
En este caso, para simplificar la adaptación del material de refuerzo de sutura tubular a un dispositivo de sutura automática, la parte o partes extremas de costura del material o materiales laminares que forman el material de refuerzo de sutura tubular pueden extenderse para formar un saliente.
A continuación, se describirán diversos materiales de refuerzo de sutura haciendo referencia a los dibujos, pero de manera no limitativa.
Forma de realización 1
Las figuras 8 y 9 representan el material de refuerzo de sutura de la invención realizado mediante el estilo de cosido representado en la figura 1. La figura 8 es un material de refuerzo de sutura tubular 4 que se prepara apilando un tejido no tejido biodegradable y bioabsorbible 5 y un tejido powernet estirable 6, y cosiendo uno a otro ambos extremos de los materiales apilados con una máquina de cosido de cadeneta de tipo DH fabricada por Pegasus. La figura 9 representa un material de refuerzo de sutura tubular 4 similar a una bolsa cuya parte de punta está cerrada. El material de refuerzo de sutura tubular similar a una bolsa se obtiene plegando una lámina del tejido no tejido 5, apilando ambos extremos y cosiéndolos en una formar tubular con la misma máquina de coser que se describe anteriormente.
Aunque no está representado, como un ejemplo modificado de la figura 8, puede mencionarse también un material de refuerzo de sutura cuya parte de punta se cose de una manera que se va estrechando.
En cualquier caso, el extremo o extremos 2 del hilo en el extremo o extremos de costura se extienden adecuadamente para la retirada fácil del hilo.
Dos piezas del material de refuerzo de sutura 4 así obtenido se adaptan individualmente a un cartucho 11 que contiene grapas y a un marco 12 del dispositivo de sutura automática 10 de la figura 10 para su uso, como se representa en una vista ampliada de la figura 11. El material de refuerzo de sutura se adapta al dispositivo de sutura automática 10 de tal manera que el extremo extendido 2 del hilo en el extremo de costura se sitúe hacia delante, es decir, en la parte de agarre del dispositivo de sutura automática 10.
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Forma de realización 2
La figura 12 representa una estructura ejemplificativa de un material de refuerzo de sutura. El material de refuerzo de sutura es un material de refuerzo de sutura tubular que se obtiene apilando un tejido no tejido biodegradable y bioabsorbible 5 y un tejido powernet estirable 6, y cosiendo ambos extremos. El extremo 1 del hilo al comienzo de la costura se une al tejido powernet 6 y se atan los extremos 2 del hilo en los dos extremos de costura para formar un anillo (anular).
Esta estructura con el extremo 2 del hilo en forma de anillo en el extremo de costura facilita la manipulación del material y la retirada del hilo. Además, puesto que el extremo 1 del hilo en el comienzo de la costura se ata al material powernet 6, el material powernet se retira fácilmente con el hilo después de una operación quirúrgica.
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Forma de realización 3
Las figuras 13 y 14 representan cada una de ellas otro ejemplo de material de refuerzo de sutura que está estructurado para impedir que se desenreden los extremos 2 del hilo en los extremos de costura.
La figura 13 representa que un tapón 9 pasa a través de los bucles 3 de los extremos 2 del hilo en el extremo de costura. El tapón 9 puede ser hilo, material o película finamente cortado, etc., y pueden utilizarse materiales diferentes de una fibra. Resulta preferido un material adecuadamente rígido que pueda pasarse fácilmente a través del bucle y retirarse también fácilmente de dicho bucle.
La figura 14 representa un material de refuerzo de sutura según la invención en el que los extremos 2 del hilo en los extremos de costura se hacen pasar a través de los bucles anteriores 3 continuos hasta los extremos 2 del hilo, impidiendo así que se desenreden los extremos 2 del hilo en los extremos de costura, como se describe anteriormente. El extremo 2 del hilo se hace pasar a través del bucle 3 mediante las etapas 1 a 4 siguientes, como se representa en la figura. Los extremos 2 del hilo en los extremos de costura se hacen pasar a través del bucle 3 y, finalmente, se tira de los extremos 2 del hilo para asegurarlo.
Estos procedimientos para impedir que el hilo se desenrede evitan que el hilo se extraiga del material de refuerzo de sutura debido a cualquier tensión que sea aplicada involuntariamente al extremo 2 del hilo. En consecuencia, después de que se complete el proceso de sutura predeterminado, el hilo es extraído del bucle 3 retirando el tapón, devolviendo el extremo del hilo que pasa a través del bucle 3 a la posición original, o tirando del hilo.
La figura 15 representa otro procedimiento para impedir que se desenrede un hilo.
En la estructura, el bucle 3 en el extremo de costura se hace pasar a través de un bucle inmediatamente anterior al bucle 3 y se fija por un único nudo 15, impidiendo así que el bucle 3 sea extraído de la lámina. Más específicamente, esta estructura puede impedir que se desenrede la costura, lo que es provocado por tensión aplicada cuando el material se adapta a un cartucho o a un marco. Después de que se complete el suturado, el borde del tejido no tejido biodegradable y bioabsorbible 5 se rompe tirando del extremo del hilo y, seguidamente, se desenreda la costura. Así, el material powernet 6 puede retirarse fácilmente junto con el hilo de costura.
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Forma de realización 4
La figura 16 representa una estructura de un material de refuerzo de sutura tubular que puede adaptarse fácilmente a un dispositivo de sutura automática. Más específicamente, la parte extrema de costura de los materiales laminares que forman el material de refuerzo de sutura tubular es extendida para formar un saliente 14. En este ejemplo, la parte extrema de costura del tejido powernet 6 se corta en una forma convexa para configurar el saliente 14. Tirando del saliente 14, el material de refuerzo de sutura tubular puede adaptarse fácilmente a un dispositivo de sutura automática.
El saliente 14 puede configurarse adecuadamente en cualquier forma y ajustarse a cualesquiera dimensiones considerando su operabilidad. Puede utilizarse cualquier procedimiento para formar un saliente en el tejido powernet 6, además de cortar el material como se describe anteriormente. Por ejemplo, dicho saliente puede formarse adhiriendo o cosiendo otros materiales, tales como paño, película, etc. El saliente puede formarse en un lado del tejido no tejido biodegradable y bioabsorbible 5 o en ambos lados del tejido no tejido 5 y el material powernet 6.
Efecto de la invención
En el material de refuerzo de sutura de la invención, una costura puede formarse fácilmente con una máquina de coser ya existente, etc. Por tanto, puede fabricarse un material de refuerzo de sutura tubular sin requerir habilidad y, además, la productividad es alta y no hay variaciones en la calidad. En comparación con las puntadas hechas por el cosido continuo convencional, se retira suavemente un hilo, y un material laminar puede ser separado sin dificultades después de la operación quirúrgica. Además, el material de refuerzo de sutura de la invención puede adaptarse fácilmente a un dispositivo de sutura automática y puede impedirse que se desenreden los hilos durante el proceso.

Claims (8)

1. Material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10), en el que ambos extremos de uno o dos materiales laminares están cosidos utilizando un punto de cadeneta con un único hilo para conformar una forma tubular, en el que dicho uno o dos extremos de hilo en uno o dos extremos de costura (2) están extendidos adecuadamente y en el que el extremo de hilo extendido se hace pasar a través de un bucle anterior (3) continuo hasta el extremo del hilo, impidiendo así que se desenrede un hilo.
2. Material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10) según la reivindicación 1, en el que la parte de punta del material de refuerzo de sutura está cosida de manera ahusada o está cosida en una forma similar a una bolsa.
3. Material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10) según la reivindicación 1 ó 2, en el que por lo menos una parte del material laminar está realizada a partir de por lo menos un elemento seleccionado de entre el grupo constituido por materiales tricotados, materiales tejidos, tejidos no tejidos, y película, estando realizado dicho por lo menos un elemento en un material biodegradable y bioabsorbible.
4. Material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10) según la reivindicación 1, en el que el material laminar y un material tricotado o material tejido estirable son apilados en una forma tubular.
5. Material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10) según cualquiera de las reivindicaciones 1 a 4, en el que se forma un saliente (14) en la parte extrema de costura de dicho uno o dos materiales laminares que conforman la forma tubular.
6. Material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10) según cualquiera de las reivindicaciones 1 a 4, en el que los extremos del hilo extendidos en el extremo de costura (2) se atan en una formar anular.
7. Procedimiento para fabricar un material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10), que comprende:
coser ambos extremos de uno o dos materiales laminares utilizando un punto de cadeneta con un solo hilo para formar un material de refuerzo de sutura tubular (10),
extender adecuadamente uno o dos extremos de hilo en uno o dos extremos de costura (2), y
hacer pasar el extremo de hilo extendido a través de un bucle anterior (3) continuo al extremo de hilo, impidiendo así que se desenrede un hilo.
8. Dispositivo de sutura automática (10) que comprende un cartucho (11) que contiene grapas y un marco (12) provisto de una ranura de recepción de grapas, en el que un material de refuerzo de sutura tubular (4) para un dispositivo de sutura automática (10) según cualquiera de las reivindicaciones 1 a 6 se adapta al cartucho (11) y/o al marco (12).
ES04747929T 2003-07-17 2004-07-16 Material de refuerzo de sutura para un dispositivo de sutura automático. Expired - Lifetime ES2350912T3 (es)

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TWI300354B (es) 2008-09-01
EP1647286A1 (en) 2006-04-19
DE602004029366D1 (de) 2010-11-11
JPWO2005007208A1 (ja) 2006-08-31
EP1647286B1 (en) 2010-09-29
PT1647286E (pt) 2010-11-30
DK1647286T3 (da) 2010-11-29
US8177797B2 (en) 2012-05-15
ATE482656T1 (de) 2010-10-15
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JP4675237B2 (ja) 2011-04-20
JP5241802B2 (ja) 2013-07-17
JP2011078799A (ja) 2011-04-21
US20060178683A1 (en) 2006-08-10
WO2005007208A1 (ja) 2005-01-27
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HK1088567A1 (zh) 2006-11-10
CN1822865A (zh) 2006-08-23
CN100444905C (zh) 2008-12-24

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