ES2569535T3 - Compresión de tejido variable con ayuda de miembros elásticos - Google Patents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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
- A61B17/07207—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 the staples being applied sequentially
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
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- A—HUMAN NECESSITIES
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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
- A61B2017/07242—Stapler heads achieving different staple heights during the same shot, e.g. using an anvil anvil having different heights or staples of different sizes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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
- A61B2017/0725—Stapler heads with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2932—Transmission of forces to jaw members
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/032—Automatic limiting or abutting means, e.g. for safety pressure limiting, e.g. hydrostatic
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Abstract
Un aparato aplicador de elementos de sujeción quirúrgicos, que comprende: una primera mordaza (1010) que tiene extremos proximal y distal y que incluye un miembro (1100) de yunque, en el que el miembro de yunque se extiende a lo largo de un eje longitudinal e incluye una superficie de contacto con el tejido; una segunda mordaza (1012) que tiene extremos proximal y distal acoplada de manera móvil a la primera mordaza, en el que la segunda mordaza incluye un canal (1209) y un cartucho (1200) que incluye un cuerpo (1202) de cartucho que tiene un par de paredes (1204, 1206) laterales, una pared (1208) inferior y una pared (1210) superior, en el que el cuerpo de cartucho se aloja en el canal; caracterizado por un par de miembros (1224) elásticos atrapados entre el cuerpo de cartucho y los bordes del canal de la segunda mordaza, creando de esta manera un cartucho cargado por muelle; en el que el par de miembros elásticos están configurados y dimensionados para aplicar fuerzas de compresión al tejido según el espesor del tejido.
Description
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DESCRIPCION
Compresion de tejido variable con ayuda de miembros elasticos Antecedentes
1. Campo tecnico
La presente description se refiere a un aparato aplicador de elementos de sujecion quirurgicos. Mas particularmente, la presente descripcion se refiere a un conjunto de herramienta para su uso con un aparato aplicador de elementos de sujecion quirurgicos, y a procedimientos de uso del mismo, para aplicar una pluralidad de elementos de sujecion quirurgicos a un tejido con fuerzas de compresion variables. La presente descripcion se refiere tambien a miembros elasticos para aplicar y mantener fuerzas de compresion constantes al tejido independientemente del espesor del tejido.
2. Antecedentes de la tecnica relacionada
Hay varios tipos conocidos de instrumentos grapadores quirurgicos adaptados especlficamente para su uso en diversos procedimientos, tales como anastomosis de extremo a extremo, anastomosis gastrointestinal, anastomosis gastrointestinal endoscopica y anastomosis transversal. Los ejemplos de instrumentos grapadores para estos diversos procedimientos pueden encontrarse en las patentes US Nos. 5.915.616, 6.202.914, 5.865.361 y 5.964.394.
El documento US 2008/041918 describe un instrumento grapador que comprende las caracterlsticas del preambulo de la reivindicacion 1.
Cada instrumento grapador quirurgico incluye un yunque que se aproxima con relation a un cartucho de grapas. Tlpicamente, el cartucho de grapas tiene una o mas filas de grapas separadas lateralmente que, dependiendo del instrumento grapador particular, pueden estar dispuestas en una configuration lineal o no lineal. El yunque incluye depresiones formadoras de grapas que estan alineadas con y/o coinciden con las ranuras para grapas de las grapas en el cartucho. Durante el uso, cada uno de los instrumentos grapadores quirurgicos implica la sujecion del tejido a ser sujetado, la expulsion de grapas individuales, el forzado de las grapas a traves del tejido agarrado y el cierre y/o la formation de las grapas contra las depresiones formadoras de grapas del yunque.
Un problema comun en la transection del tejido y/o en los procedimientos de anastomosis, que emplean uno cualquiera de los instrumentos grapadores quirurgicos descritos anteriormente, es el equilibrio entre la fuerza de anastomosis y el grado de hemostasia alcanzable. Se conoce la inclusion de grapas de tamano diferente en un aparato grapador quirurgico que tiene un hueco constante (es decir, una distancia uniforme) entre un yunque y un cartucho de grapas.
Sumario
La invencion se define en la reivindicacion 1.
La presente descripcion se refiere a un aparato aplicador de elementos de sujecion quirurgicos que incluye una primera mordaza que tiene extremos proximal y distal y que incluye un miembro de yunque, en el que el miembro de yunque se extiende a lo largo de un eje longitudinal e incluye una superficie de contacto con el tejido y una segunda mordaza que tiene extremos proximal y distal acoplados de manera movil a la primera mordaza, en el que la segunda mordaza incluye un miembro de cartucho y un canal. El aparato aplicador de elementos de sujecion quirurgicos incluye ademas un par de miembros elasticos posicionados entre el miembro de cartucho y el canal de la segunda mordaza, en el que el par de miembros elasticos estan configurados y dimensionados para aplicar y mantener fuerzas de compresion constantes al tejido independientemente del espesor del tejido.
Los miembros elasticos pueden estar configurados y dimensionados de manera que el movimiento longitudinal relativo entre el miembro de cartucho y el canal este totalmente restringido. Los miembros elasticos pueden estar configurados y dimensionados de manera que se permita el movimiento transversal entre el miembro de cartucho y el canal. El movimiento transversal puede estar determinado por un tamano del miembro de cartucho y el canal.
En ciertas realizaciones, cuando la primera mordaza y la segunda mordaza estan en una position abierta, el par de miembros elasticos mantienen el miembro de cartucho separado del canal definido por la segunda mordaza. Cuando la primera mordaza y la segunda mordaza estan en una posicion cerrada, el par de miembros elasticos se comprimen para crear un hueco de tejido proporcional a una fuerza de sujecion generada. En ciertas realizaciones, una formacion de grapas resultante de la posicion cerrada es independiente de la formacion de tejido y depende del canal definido por la segunda mordaza, uno o mas impulsores, y la configuracion de viga en I de una cuchilla. El aparato aplicador de elementos de sujecion quirurgicos puede incluir ademas una pluralidad de elementos de sujecion quirurgicos posicionados dentro del miembro de cartucho, en el que cada elemento de sujecion quirurgico tiene una altura sustancialmente equivalente.
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El par de miembros elasticos puede estar formado en un material sustancialmente elastico para soportar las capas de tejido situadas entre las mordazas primera y segunda. El par de miembros elasticos puede estar asegurado de manera fija al miembro de cartucho. En ciertas realizaciones, el par de miembros elasticos estan asegurados de manera liberable al miembro de cartucho.
El par de miembros elasticos pueden estar dispuestos en paralelo entre si y se extienden una parte de una longitud del miembro de cartucho y el canal. El par de miembros elasticos pueden estar posicionados en un borde exterior del miembro de cartucho y el canal.
Estas y otras caracterlsticas del aparato de acceso quirurgico y los miembros elasticos descritos en la presente memoria seran mas evidentes para las personas con conocimientos en la materia con referencia a la descripcion detallada siguiente de diversas realizaciones de la presente descripcion.
Breve descripcion de los dibujos
A continuacion, en la presente memoria se describen varias realizaciones de la presente descripcion con referencia a los dibujos, en los que:
La Fig. 1 es una vista superior en perspectiva de un aparato aplicador de elementos de sujecion quirurgicos que tiene un conjunto de herramienta en un extremo distal del mismo para aplicar una pluralidad de elementos de sujecion quirurgicos a un tejido, segun una realizacion de la presente descripcion;
La Fig. 2 es una vista lateral en perspectiva de un elemento de sujecion quirurgico segun la presente descripcion;
La Fig. 3 es una vista parcial en perspectiva del conjunto de herramienta de la Fig. 1 con partes separadas que ilustra un yunque y un cartucho de elementos de sujecion quirurgicos que incluye un par de miembros elasticos, segun la presente descripcion;
La Fig. 3A es una vista parcial en despiece ordenado del conjunto de herramienta de la Fig. 1 con partes separadas que ilustra el cartucho, los miembros elasticos y la segunda mordaza que define un canal, segun la presente descripcion;
La Fig. 4 es una vista esquematica ampliada de la zona de detalle indicada en la Fig. 3 que ilustra una superficie de contacto con el tejido del yunque y una pluralidad de cavidades formadas en la misma;
La Fig. 5 es una vista longitudinal en seccion transversal tomada a lo largo de la llnea 5-5 en la Fig. 4 que ilustra las cavidades formadas en la superficie de contacto con el tejido del yunque;
La Fig. 6 es una vista lateral en seccion transversal del conjunto de herramienta observado en la Fig. 1 tomada a traves de las cavidades formadas en el yunque y las ranuras de retention formadas en el cartucho de elementos de sujecion quirurgicos;
La Fig. 7 es una vista lateral en perspectiva del elemento de sujecion quirurgico mostrado en la Fig. 2 que exhibe una configuration con forma de "B" estandar despues de la formation a traves de un acoplamiento con las cavidades formadas en el yunque de la Fig. 3;
La Fig. 8 es una vista lateral en perspectiva de un elemento de sujecion quirurgico que tiene una configuracion de bucle unico despues de la formacion mediante el contacto con las cavidades formadas en la superficie de contacto con el tejido de una realizacion alternativa del yunque de la Fig. 3; y
La Fig. 9 es una vista longitudinal parcial en perspectiva, con partes eliminadas, del cartucho de elementos de sujecion quirurgicos de la Fig. 3 que ilustra la pluralidad de elementos de elementos de sujecion quirurgicos dispuestos en las filas interior, intermedia y exterior.
Descripcion detallada de las realizaciones
Diversas realizaciones del aparato aplicador de elementos de sujecion quirurgicos descrito actualmente, y los procedimientos de uso del mismo, se describiran ahora detalladamente con referencia a los dibujos en los que los numeros de referencia similares identifican elementos similares o identicos. En los dibujos, y en la descripcion siguiente, el termino "proximal" se referira al extremo del aparato aplicador de elementos de sujecion quirurgicos, o un componente del mismo, mas cercano al operador durante el uso, mientras que el termino "distal" se referira al extremo mas alejado del operador, como es tradicional y convencional en la tecnica. Ademas, deberla entenderse que el termino "elemento de sujecion quirurgico" incluye cualquier estructura sustancialmente rlgida formada en un material biocompatible que es adecuada para el proposito previsto de unir un tejido, incluyendo, pero sin limitarse a, grapas, clips quirurgicos y similares.
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La Fig. 1 ilustra un aparato 1000 aplicador de elementos de sujecion quirurgicos, de tipo reutilizable o desechable, que incluye un conjunto 1002 de mango con un mango 1003A movil y un mango 1003B estacionario, un eje 1004 alargado que se extiende distalmente desde el conjunto 1002 de mango, y un conjunto 1006 de herramienta que esta acoplado a un extremo 1008 distal del eje 1004 alargado.
En diversas realizaciones, se contempla que el conjunto 1002 de mango pueda incluir un mecanismo accionado por motor, hidraulico, de trinquete u otros mecanismos. En general, el conjunto 1006 de herramienta esta adaptado para agarrar, sujetar y cortar los segmentos de tejido adyacentes a lo largo de una llnea de corte. Durante el uso, el aparato 1000 aplicador de elementos de sujecion quirurgicos es aproximado y disparado de manera similar a y segun otros aparatos aplicadores de elementos de sujecion quirurgicos conocidos. A continuacion, se proporciona una description de la aproximacion y el disparo de un aparato 1000 aplicador de elementos de sujecion quirurgicos, incluyendo los componentes y la interaction del conjunto 1002 de mango e incluyendo el conjunto de accionamiento.
Con referencia ahora a las Figs. 1-6, el conjunto 1006 de herramienta incluye una primera mordaza 1010 que esta acoplada de manera pivotante a una segunda mordaza 1012 para facilitar su aproximacion. La primera mordaza 1010 del conjunto 1006 de herramienta incluye un yunque 1100, y la segunda mordaza 1012 incluye un cartucho 1200 de elementos de sujecion quirurgicos que esta cargado con una pluralidad de elementos 100 de sujecion quirurgicos.
El movimiento de pivote del mango 1003A movible hacia el mango 1003B estacionario aproxima la primera mordaza 1010 hacia la segunda mordaza 1012 (vease la Fig. 1). Una vez que las mordazas 1010, 1012 se encuentran en una alineacion operativa estrecha, un movimiento de pivote continuado del mango 1003A movil expulsa la pluralidad de elementos 100 de sujecion quirurgicos desde el cartucho 1200 de elementos de sujecion quirurgicos de manera que la pluralidad de elementos 100 de sujecion quirurgicos sean empujados al yunque 1100, formandose de esta manera en elementos de sujecion quirurgicos completados, tal como se describe mas detalladamente mas adelante. En ciertas realizaciones, el cartucho 1200 es desmontable y reemplazable con otro cartucho cargado. En otras realizaciones, el conjunto 1006 de herramienta comprende o forma parte de una parte de una unidad de carga extralble y reemplazable para el aparato 1000 aplicador de elementos de sujecion quirurgicos. A continuacion, se proporcionan detalles adicionales con relation a la expulsion de los elementos 100 de sujecion quirurgicos con referencia a la Fig. 2.
Cada elemento 100 de sujecion quirurgico incluye dos patas 102, 104 que estan conectadas por un tramo 106 posterior que se extiende entre las mismas (vease la Fig. 2). Las patas 102, 104 se extienden desde el tramo 106 posterior a los extremos 108, 110 penetrantes respectivos de manera que cada elemento 100 de sujecion quirurgico define una altura "H" sustancialmente equivalente antes de la formation. Las dimensiones del tramo 106 posterior y las patas 102, 104 pueden variarse de manera que el elemento 100 de sujecion quirurgico pueda ser usado para sujetar un tejido que tiene atributos variables, tales como el espesor del mismo o la presencia de tejido cicatricial.
Las patas 102, 104 y el tramo 106 posterior pueden definir una section transversal que tiene cualquier configuration geometrica adecuada incluyendo, pero sin limitarse a, rectangular, ovalada, cuadrada, triangular, trapezoidal, etc. Las patas 102, 104 y el tramo 106 posterior pueden exhibir la misma configuracion geometrica, tal como se muestra en la Fig. 2 o, de manera alternativa, las patas 102, 104 y el tramo 106 posterior pueden exhibir configuraciones geometricas diferentes. Por ejemplo, las patas 102, 104 pueden exhibir una seccion transversal rectangular, mientras que el tramo 106 posterior puede exhibir una seccion transversal ovalada.
Los extremos 108, 110 penetrantes respectivos de las patas 102, 104 pueden estar ahusados para facilitar la penetration del tejido, o de manera alternativa, los extremos 108, 110 penetrantes pueden no incluir un ahusamiento. En diversas realizaciones, se contempla tambien que los extremos 108, 110 penetrantes puedan definir una superficie conica o una superficie plana.
Antes de la formacion, las patas 102, 104 de cada elemento 100 de sujecion quirurgico pueden extenderse desde el tramo 106 posterior de manera que esten sustancialmente paralelas. De manera alternativa, las patas 102, 104 pueden converger o divergir desde el tramo 106 posterior.
Con referencia ahora a las Figs. 3-5 en particular, se describira el yunque 1100. El yunque 1100 es un miembro alargado que tiene una superficie 1102 de contacto con el tejido con una pluralidad de cavidades 1104 formadas en la misma. Cada una de las cavidades 1104 esta posicionada para recibir y deformar las patas 102, 104 de un elemento 100 de sujecion quirurgico (vease la Fig. 2) para conseguir una configuracion formada. Mas particularmente, cada cavidad 1104 formada en el yunque 1100 incluye dos superficies 1106, 1108 de formacion que se extienden al yunque 1100, es decir, lejos de la superficie 1102 de contacto con el tejido, para definir una profundidad "D", tal como se observa mejor en la Fig. 5. Tras el acoplamiento de las patas 102, 104 con las superficies 1106, 1108 de formacion, las superficies 1106, 1108 de formacion gulan las patas 102, 104 hacia dentro en la direction de las flechas "A" (vease la Fig. 4) para facilitar la deformation del elemento 100 de sujecion quirurgico a una configuracion con forma de "B" estandar (vease la Fig. 7). En una realization alternativa, el yunque 1100 puede incluir cavidades 1104 que estan configuradas y dimensionadas para deformar el elemento 100 de sujecion quirurgico de manera que el elemento 100 de sujecion defina una configuracion de un solo bucle (vease la Fig. 8) despues de la formacion. Se contempla tambien
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que los elementos 100 de sujecion quirurgicos puedan exhibir otras configuraciones tras la formacion.
Las cavidades 1104 estan dispuestas en filas dispuestas en lados opuestos de una ranura 1110 que se extiende a traves del yunque 1100 (veanse las Figs. 3, 4). La ranura 1110 esta configurada para permitir el movimiento de una cuchilla 1111, u otro elemento de corte, de manera que el tejido pueda ser cortado a lo largo de una llnea de corte. Aunque la ranura 1110 se representa como extendiendose longitudinalmente a traves del yunque 1100, en realizaciones alternativas, la ranura 1110 puede definir una configuracion en angulo, en forma de arco, o con otra forma. La ranura 1110 puede extenderse a lo largo de una llnea central del yunque 1100, tal como se muestra en la realization ilustrada en las Figs. 3 y 4, o de manera alternativa, la ranura 1110 puede estar desplazada con relation a la llnea central del yunque 1100.
El yunque 1100 incluye un par de filas 1112a interiores, un par de filas 1112b intermedias y un par de filas 1112c exteriores (vease la Fig. 4). El par interior de filas 1112a estan separadas lateralmente hacia fuera de la ranura 1110 y estan mas cerca de la misma, el par de filas 1112B intermedias estan separadas lateralmente hacia fuera con relacion al par de filas 1112a interiores, y el par de filas 111 2c exteriores estan separadas lateralmente hacia fuera con relacion el par de filas 1112b intermedias y estan mas alejadas de la ranura 1110. Aunque el yunque 1100 se representa como incluyendo tres pares de filas, es decir, los pares de filas 1112a, 1112b, 1112c interiores, intermedias y exteriores respectivas, pueden incluirse menos o mas filas de cavidades 1104 en realizaciones alternativas del yunque 1100.
Con referencia continuada a las Figs. 3-5, se describira el cartucho 1200 de elementos de sujecion quirurgicos. El cartucho 1200 de elementos de sujecion quirurgicos incluye un cuerpo 1202 de cartucho con un par de paredes 1204, 1206 laterales, una pared 1208 inferior y una pared 1210 superior (vease la Fig. 3), y reside en un canal 1209 definido por la segunda mordaza 1012. El cuerpo 1202 de cartucho incluye una ranura 1212 que se extiende a traves del mismo que esta configurada para permitir el movimiento longitudinal de la cuchilla 1111 (vease la Fig. 3). Tal como se ha descrito anteriormente con relacion al yunque 1100, aunque la ranura 1212 se representa como extendiendose longitudinalmente a traves del cartucho 1200 de elementos de sujecion quirurgicos, en realizaciones alternativas, la ranura 1212 puede definir una configuracion en angulo, en forma de arco, o con otra forma. La ranura 1212 esta dispuesta para corresponder a la ranura en el yunque 1100. La ranura 1212 puede extenderse a lo largo de una llnea central del cartucho 1200 de elementos de sujecion quirurgicos, tal como se muestra en la realizacion ilustrada en la Fig. 3, o de manera alternativa, la ranura 1212 puede estar separada de la misma.
La pared 1210 superior del cuerpo 1202 de cartucho incluye una pluralidad de ranuras 1214 de retention (vease la Fig. 3) formadas en la misma que estan dispuestas en filas que se corresponden en position a las filas de cavidades 1104 (vease la Fig. 4) formadas en la superficie 1102 de contacto con el tejido del yunque 1100. Por consiguiente, en la realizacion particular del cartucho 1200 de elementos de sujecion quirurgicos de la Fig. 3, la pared 1210 superior es sustancialmente plana y paralela a la superficie 1102 de contacto con el tejido del yunque. Tambien en la Fig. 3, las ranuras 1214 de retencion estan dispuestas en un par de filas 1216a interiores, un par de filas 1216b intermedias y un par de filas 1216c exteriores, cada una de las cuales esta dispuesta en lados opuestos de la ranura 1212. El par de filas 1216a interiores estan separadas lateralmente hacia fuera con relacion a la ranura 1212 y estan mas cerca de la misma, el par de filas 1216b intermedias estan separadas lateralmente hacia fuera con relacion al par de filas 1216a interiores, y el par de filas 1216c exteriores estan separadas lateralmente hacia fuera con relacion al par de filas 1216b intermedias y estan mas lejos de la ranura 1212. Aunque el cartucho 1200 de elementos de sujecion quirurgicos se representa como incluyendo tres pares de filas, es decir, las filas 1216a, 1216b, 1216c interiores, intermedias y exteriores respectivas, pueden incluirse menos o mas filas de ranuras 1214 de retencion de elementos de sujecion en realizaciones alternativas del cartucho 1200 de elementos de sujecion quirurgicos. En ciertas realizaciones, el cartucho de elementos de sujecion quirurgicos no incluye una ranura para alojar una cuchilla.
Cada ranura 1214 de retencion de elementos de sujecion esta configurada y dimensionada para recibir un elemento 100 de sujecion quirurgico (vease la Fig. 3), as! como un impulsor 1218 dimensionado de manera correspondiente posicionado en su interior. El impulsor 1218 y el elemento 100 de sujecion quirurgico son impulsados hacia arriba, es decir, hacia la pared 1210 superior, por una corredera 1220 (vease la Fig. 3), tal como se describe mas detalladamente mas adelante. A medida que los elementos 100 de sujecion quirurgicos salen de las ranuras 1214 de retencion de elementos de sujecion, son desplegados necesariamente en filas, es decir, filas 1222A, 1222B, 1222C interiores, intermedias y exteriores respectivas (vease la Fig. 9), en lados opuestos de la llnea de corte creada en el tejido.
Con referencia ahora a las Figs. 3-6, la segunda mordaza 1012 incluye ademas un par de miembros 1224 elasticos que estan configurados y dimensionados para aplicar y mantener una fuerza de compresion constante al tejido posicionado entre las mordazas 1010, 1012 (vease la Fig. 1) del conjunto 1006 de herramienta. En esta realizacion, el par de miembros 1224 elasticos de las Figs. 3 y 6, estan configurados como dos miembros alargados sustancialmente paralelos que estan posicionados entre el cuerpo 1202 de cartucho y el borde del canal 1209 definido por la segunda mordaza 1012. El par de miembros 1224 elasticos estan unidos a, o sino dispuestos sobre, los bordes del canal 1209, y pueden estar unidos de manera fija o liberable a los mismos en realizaciones alternativas.
El par de miembros 1224 elasticos pueden estar formados en cualquier material biocompatible adecuado que sea
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suficientemente elastico para soportar las capas de tejido. El par de miembros 1224 elasticos pueden estar formados en material organico o sintetico. El par de miembros 1224 elasticos pueden estar configurados como un refuerzo, material de refuerzo de llnea de elementos de sujecion, amohadilla u otro tipo de material. El par de miembros 1224 elasticos pueden ser un material bio-absorbible o no absorbible, almohadilla de material, materiales compuestos, materiales que incluyen fibras, colageno u otros materiales derivados a partir de tejido natural. El par de miembros 1224 elasticos pueden incluir una pluralidad de miembros elasticos de cualquier forma o tamano o longitud o anchura o patron dependiendo de la aplicacion deseada. Ademas, una pluralidad de miembros elasticos pueden estar posicionados en cualquier ubicacion con relacion al canal 1209 y el cartucho 1200.
La configuracion del par de miembros 1224 elasticos aplica una presion diferente al tejido, dependiendo de la ubicacion del tejido respecto al par de miembros 1224 elasticos. La configuracion y las dimensiones del par de miembros 1224 elasticos en las Figs. 3 y 6 estan destinadas a mantener fuerzas de sujecion de tejido constantes, independientemente del espesor del tejido. El par de miembros 1224 elasticos, de las Figs. 3 y 6, facilitan la aplicacion de una fuerza de compresion al tejido y pueden estar configurados, en ciertas realizaciones, para mantener una fuerza constante sobre el tejido para hacer uso de la aplicacion de la unidad de carga de un solo uso (Single Use Loading Unit, SULU). Por consiguiente, el par de miembros 1224 elasticos estan colocados entre el labio exterior del cartucho 1200 de elementos de sujecion quirurgicos y los bordes del canal 1209 definido por la segunda mordaza 1012, creando de esta manera un cartucho cargado por muelle. El par de miembros 1224 elasticos estan totalmente atrapados o incrustados entre el cartucho 1200 de elementos de sujecion quirurgicos y los bordes del canal 1209 como resultado de su forma de seccion transversal.
El posicionamiento del par de miembros 1224 elasticos permite ciertos tipos de movimiento con relacion al cartucho 1200 de elementos de sujecion quirurgicos y los bordes del canal 1209 definido por la segunda mordaza 1012. La adicion de miembros 1224 elasticos no afecta a la alineacion longitudinal o al movimiento con relacion al cartucho 1200 y el canal 1209. Sin embargo, se permite el movimiento transversal entre el cartucho 1200 de elementos de sujecion quirurgicos y los bordes del canal 1209 definido por la segunda mordaza 1012. El movimiento transversal esta determinado por el tamano de las caracterlsticas de interfaz del cartucho 1200 de elementos de sujecion quirurgicos y el canal 1209. El movimiento transversal es un movimiento vertical, y no un movimiento lateral.
Ademas, en la posicion de no sujecion o abierta, el par de miembros 1224 elasticos mantienen el cartucho 1200 de elementos de sujecion quirurgicos lejos del canal 1209 definido por la segunda mordaza 1012. Cuando estan en la posicion de sujecion o cerrada, el tejido es sujetado entre la primera mordaza 1010 y la segunda mordaza 1012, de manera que el par de miembros 1224 elasticos se comprimen, creando de esta manera un hueco 1300 de tejido proporcional a la fuerza de sujecion generada. Cabe senalar que la formation de la grapa se mantiene sin cambios independientemente del espesor del tejido, ya que no se ve afectada por el movimiento transversal del cartucho 1200 de elementos de sujecion quirurgicos. De hecho, la formacion de grapas depende de uno o mas de entre el canal 1209 de cadena, la corredera 1220, el impulsor 1218, el yunque 1100 y la configuracion de viga en I de la cuchilla 1111. Como resultado, el par de miembros 1224 elasticos (i) minimizan las fuerzas de sujecion para prevenir la deformation de los componentes SULU a fin de mantener una formacion de tejido satisfactoria y (ii) ampllan el intervalo de espesores de tejido.
Ademas, la separation en el interior del canal 1209 varla con las fuerzas de compresion aplicadas al cartucho 1200. La parte inferior de los cartuchos 1200 y la parte inferior del canal 1209 definen un hueco 1300 que es proporcional al espesor del tejido. A medida que aumenta el espesor de tejido entre la primera mordaza 1010 y la segunda mordaza 1012, el hueco 1300 definido entre el cartucho 1200 y el canal 1209 disminuye, a medida que se aplican fuerzas de compresion mas fuertes.
Aunque el yunque 1100 (veanse las Figs. 1, 3), el cartucho 1200 de elementos de sujecion quirurgicos (veanse las Figs. 1, 3) y sus diversas realizaciones descritas anteriormente en la presente memoria se han descrito en conexion con una pluralidad de elementos 100 de sujecion quirurgicos sustancialmente uniformes (vease la Fig. 2), en realizaciones alternativas de la presente description, el yunque 1100 y el cartucho 1200 de elementos de sujecion quirurgicos pueden estar adaptados para su uso con una pluralidad de elementos de sujecion quirurgicos que tienen dimensiones o configuraciones diferentes. Por ejemplo, con referencia a las Figs. 3 y 6, las cavidades 1104 formadas en el yunque 1100 y/o las ranuras 1214 de retention formadas en el cartucho 1200 de elementos de sujecion quirurgicos pueden estar configuradas y dimensionadas para alojar elementos de sujecion quirurgicos que tienen alturas "H" preformadas distintas (vease la Fig. 2).
Ademas, aunque cada realization del yunque 1100 (veanse las Figs. 1, 3) y el cartucho 1200 de elementos de sujecion quirurgicos (veanse las Figs. 1, 3) descritos anteriormente en la presente memoria se ha descrito como incluyendo ranuras 1110, 1212 correspondientes, respectivamente, que estan configuradas y dimensionadas para permitir el movimiento de la cuchilla 1111 (vease la Fig. 3), despues de la sujecion del tejido, la presente descripcion contempla tambien realizaciones del yunque 1100 y el cartucho 1200 de elementos de sujecion quirurgicos que no incluyen dichas ranuras. En estas realizaciones, el tejido serla sujetado inicialmente y, a continuation, serla cortado posteriormente, por ejemplo, mediante el empleo de un bisturl.
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Con referenda ahora a las Figs. 1-6, se describira un procedimiento de sujecion de tejido con el aparato 1000 aplicador de elementos de sujecion quirurgicos. El aparato 1000 aplicador de elementos de sujecion quirurgicos es aproximado y disparado de manera similar a y segun otro aparato aplicador de elementos de sujecion quirurgicos conocido, por ejemplo, el aparato 1000 aplicador de elementos de sujecion quirurgicos descrito en la patente US N° 5.865.361, de titularidad compartida, asignada actualmente a Tyco Healthcare Group LP.
Tal como se observa en la Fig. 1, el conjunto 1002 de mango incluye un miembro 1003A de mango movil. El mango 1003a movil esta conectado operativamente a un eje de accionamiento, que recibe el extremo proximal de una barra de control de manera que el avance lineal del eje de accionamiento causa un avance lineal correspondiente de la barra de control. Hay provisto tambien un conjunto de accionamiento axial que puede acoplarse con la barra de control. Mas especlficamente, el conjunto de accionamiento axial incluye una barra 1113 de accionamiento alargada con un extremo distal que soporta la hoja 1111 de cuchilla (vease la Fig. 3) que esta configurada y dimensionada para su acoplamiento con la barra de control. Tal como se observa en la Fig. 3, la cuchilla 1111 esta posicionada para desplazarse detras de la corredera 1220. La barra 1113 de accionamiento incluye una pestana 1113a superior que se acopla a la ranura 1110 formada en el yunque 1100 y una pestana 1113b inferior que se acopla a la ranura 1212 formada en el cuerpo 1202 de cartucho.
Despues de que el aparato 1000 aplicador de elementos de sujecion quirurgicos es manipulado de manera que el tejido diana esta dispuesto entre las mordazas 1010, 1012 abiertas del conjunto 1006 de herramienta, las mordazas 1010, 1012 son aproximadas usando el conjunto 1002 de mango para sujetar el tejido diana entre las mismas y aplicar una fuerza de compresion al mismo. Especlficamente, la manipulacion del mango 1003a movil hace avanzar el eje de accionamiento para efectuar el avance correspondiente de la barra de control. En realizaciones particulares, el eje de accionamiento incluye una cremallera dentada definida sobre el mismo, y el mango 1003a movil tiene un gatillo de trinquete montado en el mismo para enganchar y hacer avanzar de manera incremental el eje de accionamiento. El gatillo puede estar montado en un pasador de pivote y un muelle de torsion en espiral que empuja el gatillo a un acoplamiento con la cremallera dentada. La barra de control esta conectada en su extremo distal al conjunto de accionamiento, que incluye la barra 1113 de accionamiento indicada anteriormente, de manera que el movimiento distal de la barra de control causa un movimiento distal de la barra 1113 de accionamiento que, a su vez, fuerza el yunque 1100 hacia el cartucho 1200. Especlficamente, la barra de control hace avanzar la barra 1113 de accionamiento distalmente de manera que las pestanas 1113a, 1113b superior e inferior se acoplen a las ranuras 1110, 1212 del yunque 1100 y el cuerpo 1202 de cartucho, respectivamente.
Con el tejido sujeto firmemente entre las mordazas 1010, 1012, el aparato 1000 aplicador de elementos de sujecion quirurgicos es disparado a continuacion para expulsar los elementos de sujecion quirurgicos accionando una vez mas el mango 1003A movil. Para disparar el aparato 1000 aplicador de elementos de sujecion quirurgicos, el mango 1003A movil es manipulado una vez mas para causar el avance del conjunto de accionamiento, que causa que la corredera 1220 (vease la Fig. 3) atraviese el cuerpo 1202 de cartucho y se acople a los impulsores 1218 (vease la Fig. 3) para expulsar de esta manera la pluralidad de elementos 100 de sujecion quirurgicos desde el cartucho 1200 de elementos de sujecion quirurgicos. Especlficamente, las superficies principales en angulo de la corredera 1220 contactan secuencialmente con los impulsores 1218 en las superficies de leva incluidas en los mismos a medida que la corredera se desplaza. La interaction entre las superficies principales de la corredera 1220 y las superficies de leva de los impulsores 1218 fuerza los impulsores 1218 hacia la pared 1210 superior del cuerpo 1202 de cartucho. El disparo secuencial de los elementos 100 de sujecion quirurgicos continua hasta que la corredera 1220 se hace avanzar hasta el extremo distal del cartucho 1200, momento en el que todos los elementos 100 de sujecion quirurgicos alojados en el cartucho 1200 habran sido expulsados.
La pluralidad de elementos 100 de sujecion quirurgicos pasan a traves de las ranuras 1214 de retention (vease las Figs. 3, 6) formadas en la pared 1210 superior del cartucho 1200 de elementos de sujecion quirurgicos. Despues de pasar a traves del tejido, la pluralidad de elementos 100 de sujecion quirurgicos se forman mediante el acoplamiento con las cavidades 1104 (veanse las Figs. 3, 4, 6) definidas en la superficie 1102 de contacto con el tejido del yunque 1100 para conseguir, por ejemplo, la configuration con forma de " B" estandar (vease la Fig. 7). Tras la formation dentro del tejido, la pluralidad de elementos 100 de sujecion quirurgicos actuan para mantener la fuerza de compresion aplicada al mismo durante la sujecion de las mordazas 1010, 1012 primera y segunda respectivas (vease la Fig. 1) del conjunto 1006 de herramienta.
Por consiguiente, el flujo de sangre a traves del tejido inmediatamente adyacente y que rodea la llnea de corte sera menor que el flujo de sangre a traves del tejido separado lateralmente de la misma. Mas especlficamente, el tejido en la filas 1222C exteriores estara menos comprimido que el tejido en filas 1222B, y el tejido en las filas 1222B esta menos comprimido que el tejido en las filas 1222A (vease la Fig. 9). El flujo de sangre a traves del tejido que rodea los elementos 100 de sujecion quirurgicos en las filas 1222C estara menos restringido en comparacion con el flujo de sangre a traves del tejido que rodea los elementos 100 de sujecion quirurgicos en las filas 1222B, y el flujo de sangre a traves del tejido que rodea los elementos 100 de sujecion quirurgicos en las filas 1222B estara menos restringido en comparacion con el flujo de sangre a traves del tejido que rodea los elementos 100 de sujecion quirurgicos en las filas
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1222A.
Se preve que el conjunto 1006 de herramienta pueda estar adaptado tambien para su uso con cualquiera de los otros aparatos aplicadores de elementos de sujecion quirurgicos descritos en las patentes US Nos. 6.045.560, 5.964.394, 5.894.979, 5.878.937, 5.915.616, 5.836.503, 5.865.361, 5.862.972, 5.817.109, 5.797.538, y 5.782.396, de titularidad compartida.
En ciertas realizaciones de la presente descripcion, se contempla que el aparato aplicador de elementos de sujecion quirurgicos descrito pueda incluir una pluralidad de barras de leva para interactuar con los impulsores para desplegar los elementos de sujecion quirurgicos. Por ejemplo, el aparato descrito en la patente US N° 5.318.221, de titularidad comun, incluye un adaptador de barra de leva que tiene una pluralidad de barras de leva y una cuchilla, as! como un canal que se hace avanzar mediante la operacion del mango del aparato, que acciona las barras de leva y la cuchilla hacia adelante. Para sujetar el yunque y el cartucho de elementos de sujecion quirurgicos juntos, el aparato incluye ademas un tubo de sujecion que es movil para rodear el extremo proximal del yunque.
Como otro ejemplo, el aparato descrito en la patente US N° 5.782.396 incluye una corredera de accionamiento y una barra de accionamiento alargada que se hace avanzar distalmente mediante la operacion del mango del aparato, accionando la corredera de accionamiento hacia delante. En este aparato, el extremo distal de la barra de accionamiento se acopla al yunque y el canal que soporta el cartucho de elementos de sujecion quirurgicos a medida que la barra de accionamiento se desplaza distalmente para desplegar las grapas y sujetar el yunque y el cartucho de elementos de sujecion entre si.
La descripcion, la divulgacion y las figuras anteriores no deberlan interpretarse como limitativas, sino meramente como ejemplos de realizaciones particulares. Por lo tanto, debe entenderse que la descripcion no se limita a las realizaciones precisas descritas, y que una persona con conocimientos en la materia puede efectuar otros diversos cambios y modificaciones sin apartarse del alcance de la descripcion. Ademas, las personas con conocimientos en la materia apreciaran que los elementos y las caracterlsticas ilustradas o descritas en conexion con una realizacion pueden combinarse con los de otra, y que se pretende que dichas modificaciones y variaciones esten incluidas tambien dentro del alcance de la presente descripcion.
Claims (12)
- 510152025303540REIVINDICACIONES1. Un aparato aplicador de elementos de sujecion quirurgicos, que comprende:una primera mordaza (1010) que tiene extremos proximal y distal y que incluye un miembro (1100) de yunque, en el que el miembro de yunque se extiende a lo largo de un eje longitudinal e incluye una superficie de contacto con el tejido;una segunda mordaza (1012) que tiene extremos proximal y distal acoplada de manera movil a la primera mordaza, en el que la segunda mordaza incluye un canal (1209) y un cartucho (1200) que incluye un cuerpo (1202) de cartucho que tiene un par de paredes (1204, 1206) laterales, una pared (1208) inferior y una pared (1210) superior, en el que el cuerpo de cartucho se aloja en el canal;caracterizado por un par de miembros (1224) elasticos atrapados entre el cuerpo de cartucho y los bordes del canal de la segunda mordaza, creando de esta manera un cartucho cargado por muelle; en el que el par de miembros elasticos estan configurados y dimensionados para aplicar fuerzas de compresion al tejido segun el espesor del tejido.
- 2. Aparato aplicador de elementos de sujecion quirurgicos segun la reivindicacion 1, en el que los miembros elasticos estan atrapados entre el cuerpo de cartucho y los bordes del canal de manera que el movimiento relativo longitudinal entre el cuerpo de cartucho y el canal esta restringido.
- 3. Aparato aplicador de elementos de sujecion quirurgicos segun la reivindicacion 1, en el que los miembros elasticos estan atrapados entre el cuerpo de cartucho y los bordes del canal de manera que el movimiento vertical entre el cuerpo de cartucho y el canal esta permitido.
- 4. Aparato aplicador de elementos de sujecion quirurgicos segun la reivindicacion 3, en el que el movimiento vertical esta determinado por un tamano del cuerpo de cartucho y el canal.
- 5. Aparato aplicador de elementos de sujecion quirurgicos segun cualquiera de las reivindicaciones anteriores, en el que cuando la primera mordaza y la segunda mordaza estan en una posicion abierta, el par de miembros elasticos mantienen la pared inferior del cuerpo de cartucho separada del canal por un hueco (1300).
- 6. Aparato aplicador de elementos de sujecion quirurgicos segun la reivindicacion 5, en el que cuando la primera mordaza y la segunda mordaza estan en una posicion cerrada, el par de miembros elasticos se comprimen para reducir el hueco de manera proporcional a una fuerza de sujecion generada.
- 7. Aparato aplicador de elementos de sujecion quirurgicos segun la reivindicacion 6, en el que una formacion de grapas resultante de la posicion cerrada es independiente del espesor del tejido.
- 8. Aparato aplicador de elementos de sujecion quirurgicos segun cualquiera de las reivindicaciones anteriores, que incluye ademas una pluralidad de elementos (100) de sujecion quirurgicos posicionados dentro del cuerpo de cartucho, en el que cada elemento de sujecion quirurgico tiene un peso sustancialmente equivalente.
- 9. Aparato aplicador de elementos de sujecion quirurgicos segun cualquiera de las reivindicaciones anteriores, en el que el par de miembros elasticos estan formados en un material sustancialmente elastico y estan configurados para soportar las capas de tejido posicionadas entre las mordazas primera y segunda.
- 10. Aparato aplicador de elementos de sujecion quirurgicos segun cualquiera de las reivindicaciones anteriores, en el que el par de miembros elasticos estan asegurados de manera fija al cuerpo de cartucho.
- 11. Aparato aplicador de elementos de sujecion quirurgicos segun cualquiera de las reivindicaciones 1 a 9, en el que el par de miembros elasticos estan asegurados de manera liberable al cuerpo de cartucho.
- 12. Aparato aplicador de elementos de sujecion quirurgicos segun cualquiera de las reivindicaciones anteriores, en el que el par de miembros elasticos son paralelos entre si y se extienden una parte de una longitud del cuerpo de cartucho y el canal.
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-
2009
- 2009-10-14 US US12/578,847 patent/US8152041B2/en active Active
-
2010
- 2010-09-22 AU AU2010224374A patent/AU2010224374B2/en active Active
- 2010-10-13 JP JP2010231027A patent/JP5705496B2/ja active Active
- 2010-10-13 ES ES10251797.6T patent/ES2569535T3/es active Active
- 2010-10-13 CA CA2717532A patent/CA2717532C/en active Active
- 2010-10-13 EP EP10251797.6A patent/EP2311387B1/en active Active
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2012
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2014
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Also Published As
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US8152041B2 (en) | 2012-04-10 |
CA2717532A1 (en) | 2011-04-14 |
JP5705496B2 (ja) | 2015-04-22 |
EP2311387A1 (en) | 2011-04-20 |
US20120160895A1 (en) | 2012-06-28 |
EP2311387B1 (en) | 2016-03-30 |
JP2011083604A (ja) | 2011-04-28 |
US20110084112A1 (en) | 2011-04-14 |
AU2010224374B2 (en) | 2015-06-11 |
AU2010224374A1 (en) | 2011-04-28 |
US8292156B2 (en) | 2012-10-23 |
JP2015006432A (ja) | 2015-01-15 |
CA2717532C (en) | 2017-09-12 |
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