ES2906419T3 - Aparato 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, 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
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
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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
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
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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
- A61B2017/07257—Stapler heads characterised by its anvil
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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
- A61B17/068—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
- A61B2017/07278—Stapler heads characterised by its sled or its staple holder
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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
- A61B2017/07285—Stapler heads characterised by its cutter
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Abstract
Un aparato de grapado quirúrgico, (100,200) que comprende: una carcasa (102,202); un miembro alargado (104,204) que se extiende desde la carcasa; un conjunto de herramientas (107) soportado en un extremo distal del miembro alargado, el conjunto de herramientas que incluye un primer miembro de la mordaza y un segundo miembro de la mordaza (210); un conjunto del cartucho (212) configurado para soportarse de forma liberable sobre el primer miembro de la mordaza, el conjunto del cartucho que incluye un mecanismo deslizante de accionamiento (215); un yunque (211) soportado operativamente en el segundo miembro de la mordaza; y un miembro de accionamiento (D) que tiene un extremo de trabajo (201), caracterizado porque: el yunque comprende un tope (219) y el aparato comprende además un resorte (231) acoplado a una superficie interior (223) del segundo miembro de la mordaza, en donde el resorte se configura para empujar el extremo de trabajo (201) del miembro de accionamiento para colocar el extremo de trabajo del miembro de accionamiento en alineación con el tope en el yunque para evitar que el extremo de trabajo del miembro de accionamiento avance distalmente cuando el aparato de grapado quirúrgico no tiene el conjunto del cartucho (212) soportado de manera liberable en la primera mordaza, o cuando se gasta el conjunto del cartucho soportado de forma liberable en la primera mordaza; el mecanismo deslizante de accionamiento (215) comprende al menos una interfaz mecánica; y el extremo de trabajo (201) del miembro de accionamiento comprende al menos una interfaz mecánica, de manera que, cuando el aparato de grapado quirúrgico tiene el conjunto del cartucho soportado de forma liberable en la primera mordaza en un estado inicial sin uso del conjunto del cartucho, la al menos una interfaz mecánica en el mecanismo deslizante de accionamiento se coloca para acoplar la al menos una interfaz mecánica en el extremo de trabajo del miembro de accionamiento para accionar el extremo de trabajo del miembro de accionamiento fuera del acoplamiento con el tope (219) contra la inclinación del resorte (231) para permitir el avance del miembro de accionamiento a través del conjunto de herramientas, y en donde el mecanismo deslizante de accionamiento (215) y el conjunto del cartucho (212) se proveen con una muesca y un retén que se acoplan de forma liberable para mantener el mecanismo deslizante de accionamiento (215) en su lugar mientras se instala el conjunto del cartucho (212) en el primer miembro de la mordaza, la muesca que se libera del retén cuando el extremo de trabajo (201) del miembro de accionamiento (D) entra en contacto con el mecanismo deslizante de accionamiento (215) durante el avance distal del miembro de accionamiento (D). Un aparato de grapado quirúrgico de acuerdo con la reivindicación 1, en donde al menos una interfaz mecánica en el mecanismo deslizante de accionamiento (215) es una protuberancia (260) que tiene una configuración inclinada que se extiende proximalmente y la al menos una interfaz mecánica en el extremo de trabajo (201) es una cavidad (216) que tiene una configuración que complementa la configuración inclinada de la protuberancia. Un aparato de grapado quirúrgico de acuerdo con la reivindicación 1 ó 2, en donde el mecanismo deslizante de accionamiento incluye dicho retén que se configura para acoplarse de forma liberable con la muesca correspondiente dispuesta dentro del conjunto del cartucho. Un aparato de grapado quirúrgico de acuerdo con cualquiera de las reivindicaciones anteriores, en donde el resorte (231) se configura para entrar en contacto con una porción superior (218a) del extremo de trabajo (201) del miembro de accionamiento para desviar el extremo de trabajo en dirección generalmente hacia abajo. Un aparato de grapado quirúrgico de acuerdo con cualquiera de las reivindicaciones anteriores, en donde el resorte (231) es un resorte ondulado.
Description
DESCRIPCIÓN
Aparato de grapado quirúrgico
Referencia cruzada a solicitudes relacionadas
Esta solicitud reivindica el beneficio y la prioridad de la Solicitud de Patente Provisional de Estados Unidos Núm.
61/779,631, presentada el 13 de marzo de 2013.
Antecedentes
Campo técnico
La presente divulgación se refiere a aparatos de grapado quirúrgico. Más particularmente, la presente divulgación se refiere a aparatos de grapado quirúrgico que incluyen mecanismos de bloqueo de accionamiento del extremo de trabajo.
Descripción de la técnica relacionada
Los aparatos de grapado quirúrgico configurados para grapar y posteriormente cortar tejido son bien conocidos en la técnica. Dichos aparatos grapadores incluyen típicamente una carcasa o mango y un miembro alargado que se extiende desde la carcasa. En ciertos casos, la recarga de la unidad de carga de un solo uso o de múltiples usos (MULU) puede configurarse para acoplarse de forma liberable a un extremo distal del miembro alargado. En cualquiera de las configuraciones de recarga antes mencionadas, se puede proporcionar un conjunto de herramientas que incluye un yunque y un cartucho en las respectivas mordazas de la recarga para grapar tejido. El conjunto de herramientas puede incluir una cuchilla para cortar el tejido grapado. La recarga puede incluir un miembro de accionamiento que tiene un extremo de trabajo que soporta la cuchilla y hace avanzar un mecanismo deslizante de accionamiento a través del conjunto de herramientas para grapar y cortar tejido.
Si bien las configuraciones de recarga antes mencionadas proporcionan numerosas ventajas, puede ser deseable evitar el avance involuntario del miembro de accionamiento de la recarga cuando falta un cartucho de grapas en el conjunto de herramientas o se ha disparado. El documento de patente EP1749486A1 se considera el estado de la técnica más cercano al objeto de la presente invención y divulga características que se incluyen en el preámbulo de la reivindicación 1.
Resumen
Como puede apreciarse, los aparatos de grapado quirúrgico que incluyen un mecanismo de bloqueo de accionamiento pueden resultar útiles en el ámbito quirúrgico. La invención se define en la reivindicación 1. Otras modalidades de la invención se definen en las reivindicaciones dependientes.
Las modalidades de la presente divulgación se describen en detalle con referencia a las figuras de los dibujos en donde los mismos números de referencia identifican elementos similares o idénticos. Como se usa en el presente documento, el término "distal" se refiere a la porción que se describe que está más lejos de un usuario, mientras que el término "proximal" se refiere a la porción que se describe que está más cerca de un usuario.
Un aspecto de la presente divulgación proporciona un aparato de grapado quirúrgico. El aparato de grapado quirúrgico incluye una carcasa y un miembro alargado del mismo. Un conjunto de herramientas se soporta en un extremo distal del miembro alargado e incluye un primer miembro de la mordaza y un segundo miembro de la mordaza. Un conjunto del cartucho se soporta de forma liberable en el primer miembro de la mordaza e incluye un mecanismo deslizante de accionamiento y una corredera. Un yunque se soporta operativamente en el segundo miembro de la mordaza. Un miembro de accionamiento que tiene un extremo de trabajo se configura para trasladarse a través del conjunto de herramientas cuando el primer y segundo miembros de la mordaza están en una configuración cerrada. Un conjunto de bloqueo que incluye un cierre se puede mover desde una posición bloqueada a una posición desbloqueada. El cierre es empujado a la posición bloqueada para acoplar el extremo de trabajo del miembro de accionamiento para evitar la traslación distal del miembro de accionamiento a través del conjunto de herramientas. La corredera se configura para mover el cierre de la posición bloqueada a la posición desbloqueada tras la instalación de un conjunto del cartucho no gastado en el primer miembro de la mordaza. La corredera se puede mover mediante el miembro de accionamiento tras accionar el aparato de grapado para permitir que el cierre se mueva de vuelta a la posición bloqueada.
El conjunto de bloqueo puede acoplarse operativamente a un conjunto de pivote de la recarga. El conjunto de bloqueo puede incluir un pasador de leva, al menos un miembro elástico y al menos una arandela. El pasador de leva puede colocarse a través de una abertura definida a través del conjunto de pivote y configurarse para girar en él para mover el cierre desde la posición bloqueada a la posición desbloqueada cuando entra en contacto con la corredera.
El extremo de trabajo puede incluir al menos una cavidad que se configura para acoplar selectivamente el cierre. La corredera puede configurarse para acoplarse de forma liberable al mecanismo deslizante de accionamiento. La corredera puede incluir al menos una interfaz mecánica que se configura para acoplarse a una interfaz mecánica correspondiente dispuesta dentro del conjunto del cartucho cuando el mecanismo deslizante de accionamiento se mueve distalmente. Las interfaces mecánicas pueden disponerse en el deflector deslizante y dentro del conjunto del cartucho formar una cola de milano.
Un aspecto de la presente divulgación proporciona una recarga. La recarga incluye un conjunto de herramientas que incluye un primer miembro de la mordaza y un segundo miembro de la mordaza. Un conjunto del cartucho se soporta de forma liberable en el primer miembro de la mordaza e incluye un mecanismo deslizante de accionamiento y una corredera. Un yunque se soporta operativamente en el segundo miembro de la mordaza. Un miembro de accionamiento que tiene un extremo de trabajo se configura para trasladarse a través del conjunto de herramientas cuando el primer y segundo miembros de la mordaza están en una configuración cerrada. Un conjunto de bloqueo que incluye un cierre se puede mover desde una posición bloqueada a una posición desbloqueada. El cierre se empuja a la posición bloqueada para acoplar el extremo de trabajo del miembro de accionamiento para evitar la traslación distal del miembro de accionamiento a través del conjunto de herramientas. La corredera se configura para mover el cierre de la posición bloqueada a la posición desbloqueada tras la instalación de un conjunto del cartucho no gastado en el primer miembro de la mordaza. El miembro de accionamiento puede mover la corredera tras accionar el aparato de grapado para permitir que el cierre vuelva a la posición de bloqueo.
El conjunto de bloqueo puede acoplarse operativamente a un conjunto de pivote de la recarga. El conjunto de bloqueo puede incluir un pasador de leva, al menos un miembro elástico y al menos una arandela. El pasador de leva puede colocarse a través de una abertura definida a través del conjunto de pivote y configurarse para girar en él para mover el cierre desde la posición bloqueada a la posición desbloqueada cuando entra en contacto con la corredera.
El extremo de trabajo puede incluir al menos una cavidad que se configura para acoplar selectivamente el cierre. La corredera puede configurarse para acoplarse de forma liberable al mecanismo deslizante de accionamiento. La corredera puede incluir al menos una interfaz mecánica que se configura para acoplarse a una interfaz mecánica correspondiente dispuesta dentro del conjunto del cartucho cuando el mecanismo deslizante de accionamiento se mueve distalmente. Las interfaces mecánicas pueden disponerse en el deflector deslizante y dentro del conjunto del cartucho formar una cola de milano.
Un aspecto de la presente divulgación proporciona un aparato de grapado quirúrgico. El aparato de grapado quirúrgico incluye una carcasa y un miembro alargado del mismo. Un conjunto de herramientas se soporta en un extremo distal del miembro alargado e incluye un primer miembro de la mordaza y un segundo miembro de la mordaza. Un conjunto del cartucho se soporta de forma liberable en el primer miembro de la mordaza e incluye un mecanismo deslizante de accionamiento que incluye al menos una interfaz mecánica. Un yunque se soporta operativamente en el segundo miembro de la mordaza e incluye al menos un resorte y define un tope. Un miembro de accionamiento que tiene un extremo de trabajo incluye al menos una interfaz mecánica. El resorte se configura para empujar el extremo de trabajo del miembro de accionamiento para colocar el extremo de trabajo del miembro de accionamiento en alineación con el tope en el yunque para evitar que el extremo de trabajo del miembro de accionamiento avance distalmente. La al menos una interfaz mecánica en el mecanismo deslizante de accionamiento se coloca para acoplarse con la al menos una interfaz mecánica en el extremo de trabajo del miembro de accionamiento para retener el extremo de trabajo del miembro de accionamiento fuera del acoplamiento con el tope para permitir el avance del miembro de accionamiento a través del conjunto de herramientas.
La al menos una interfaz mecánica en el mecanismo deslizante de accionamiento puede ser una protuberancia que tiene una configuración inclinada que se extiende proximalmente y la al menos una interfaz mecánica en el extremo de trabajo es una cavidad que tiene una configuración que complementa la configuración inclinada de la protuberancia. El mecanismo deslizante de accionamiento puede incluir un retén que puede configurarse para acoplarse de forma liberable con una muesca correspondiente dispuesta dentro del conjunto del cartucho.
El resorte puede configurarse para entrar en contacto con una parte superior del extremo de trabajo del miembro de accionamiento para desviar el extremo de trabajo en dirección generalmente hacia abajo. El resorte ondulado puede ser un resorte ondulado.
Un aspecto de la presente divulgación proporciona una recarga. La recarga incluye un conjunto de herramientas que incluye un primer miembro de la mordaza y un segundo miembro de la mordaza. Un conjunto del cartucho se soporta de forma liberable en el primer miembro de la mordaza e incluye un mecanismo deslizante de accionamiento que incluye al menos una interfaz mecánica. Un yunque se soporta operativamente en el segundo miembro de la mordaza e incluye al menos un resorte y define un tope. Un miembro de accionamiento que tiene un extremo de trabajo incluye al menos una interfaz mecánica. El resorte se configura para empujar el extremo de trabajo del miembro de accionamiento para colocar el extremo de trabajo del miembro de accionamiento en alineación con el tope en el yunque para evitar que el extremo de trabajo del miembro de accionamiento avance distalmente. La al menos una interfaz mecánica en el mecanismo deslizante de accionamiento se coloca para acoplarse con la al
menos una interfaz mecánica en el extremo de trabajo del miembro de accionamiento para retener el extremo de trabajo del miembro de accionamiento fuera del acoplamiento con el tope para permitir el avance del miembro de accionamiento a través del conjunto de herramientas.
Breve descripción de los dibujos
Diversas modalidades de la presente divulgación se describen a continuación con referencia a los dibujos, en donde:
La Figura 1 es una vista lateral en perspectiva de un aparato de grapado quirúrgico motorizado que soporta una recarga;
La Figura 2 es una vista lateral en perspectiva de un aparato de grapado quirúrgico manual que soporta una recarga;
La Figura 3A es una vista lateral en perspectiva de la recarga de las Figuras 1 y 2 que incluyen un mecanismo de bloqueo de accionamiento de acuerdo con una modalidad de la presente divulgación;
La Figura 3B es una vista lateral en perspectiva de un conjunto de herramientas de la recarga que se muestra en las Figuras 1-3B;
La Figura 4 es una vista ampliada del área indicada del detalle de la Figura 3C;
La Figura 5 es una vista en despiece del conjunto de pivote que se muestra en la Figura 4 y un miembro de accionamiento que incluye un extremo de trabajo de la recarga que se muestran separados entre sí;
La Figura 6 es una vista en perspectiva del pasador de leva mostrado en la Figura 5;
La Figura 7 es una vista parcial en sección transversal tomada a lo largo de la línea 7 de la Figura 4;
La Figura 8 es una vista lateral en perspectiva del conjunto de pivote representado en la Figura 4 mostrado invertido;
La Figura 9 vista en perspectiva del conjunto del cartucho y mordaza mostrados en la Figura 3B separados entre sí y con un accionamiento y deslizamiento del conjunto del cartucho separado del conjunto del cartucho; La Figura 10 es una vista en sección transversal tomada a lo largo de la porción de línea 10 de la Figura 9; La Figura 11 es una vista parcial en perspectiva de un extremo proximal del conjunto del cartucho con la corredera retirada para mostrar una guía del conjunto del cartucho;
La Figura 12 es una vista parcial en perspectiva del extremo proximal del conjunto del cartucho con la corredera mostrada acoplada a la guía provista mostrada en la Figura 11;
La Figura 13 es una vista parcial en perspectiva del extremo proximal del conjunto de herramientas mostrado en la Figura 3B que ilustra una parte superior del conjunto de pivote mostrado en la Figura 4 con el conjunto del cartucho instalado en el miembro de la mordaza y el extremo de trabajo de la recarga está en una posición pre-avanzada;
La Figura 14 es una vista parcial en perspectiva del extremo proximal del conjunto de herramientas mostrado en la Figura 3B que ilustra una parte inferior del conjunto de pivote mostrado en la Figura 4 con el conjunto del cartucho instalado en el miembro de la mordaza y el extremo de trabajo de la recarga en una posición pre-avanzada;
La Figura 15 es una vista lateral en sección transversal de un conjunto de herramientas de una recarga que incluye un mecanismo de bloqueo de accionamiento de acuerdo con una modalidad alternativa de la presente divulgación y con un extremo de trabajo en una posición retraída;
La Figura 16 es una vista parcial en sección transversal del conjunto de herramientas con el extremo de trabajo de la recarga avanzando distalmente hacia un mecanismo deslizante de accionamiento de un conjunto del cartucho de la recarga;
La Figura 17 es una vista parcial en sección transversal del conjunto de herramientas con el extremo de trabajo de la recarga acoplado con el mecanismo deslizante de accionamiento y con el extremo de trabajo colocado para su posterior avance a través de la recarga;
La Figura 18 es una vista parcial en sección transversal del conjunto de herramientas con el extremo de trabajo acoplado con el mecanismo deslizante de accionamiento y trasladándose a través del conjunto del cartucho; y
La Figura 19 es una vista parcial en sección transversal del conjunto de herramientas con el extremo de trabajo en la posición retraída.
Descripción detallada
En el presente documento se describen modalidades detalladas de la presente divulgación; sin embargo, las modalidades divulgadas son simplemente ejemplos de la divulgación, que pueden realizarse de diversas formas. Por lo tanto, los detalles estructurales y funcionales específicos que se divulgan en el presente documento no se deben interpretar como limitantes, sino simplemente como una base para las reivindicaciones y como una base representativa para enseñar a un experto en la técnica a emplear de maneras diversas la presente divulgación en prácticamente cualquier estructura adecuadamente detallada.
De acuerdo con la presente divulgación, en el presente documento se divulgan diversos mecanismos de bloqueo de accionamiento y se configuran para su uso con un aparato de grapado quirúrgico adaptado para recibir un cartucho de grapas reemplazable. Los diversos mecanismos de bloqueo de accionamiento que se describen a continuación
se configuran para evitar que se dispare el aparato de grapado quirúrgico antes de instalar un cartucho, o incluso de instalar un cartucho vacío o gastado.
La Figura 1 ilustra un aparato de grapado quirúrgico motorizado que se muestra generalmente como 100. La Figura 2 ilustra un aparato de grapado quirúrgico manual que se muestra generalmente como 200. El aparato motorizado incluye uno o más motores y una fuente de alimentación interna o externa para accionar mecánicamente el aparato grapador, mientras que el aparato manual 200 tiene un mango móvil 236 para accionar manualmente el aparato grapador. Ver las Patentes de Estados Unidos Núms. 5,865,361; 5,782,396; la Internacional WO 04/032,760; la Publicación de Patente de Estados Unidos Núm. 2010/0276741; y la Solicitud de Patente de Estados Unidos Núm. de serie 13/444,228.
Brevemente, el aparato de grapado quirúrgico 100 incluye una carcasa o mango estacionario 102 que tiene un accionador 136 y un miembro alargado 104 que se extiende desde la carcasa 102 (Figura 1). Del mismo modo, el aparato de grapado quirúrgico 200 incluye una carcasa o mango estacionario 202 que soporta un mango móvil 236 y un miembro alargado 204 que se extiende desde la carcasa 202. El aparato de grapado quirúrgico 200 incluye un mecanismo de retracción 217 (Figura 2) que puede agarrarse manualmente y tirarse proximalmente para retraer un mecanismo de disparo del aparato 200. Cada uno de los miembros alargados 104, 204 se configuran para acoplarse de manera removible a una recarga 106. Aunque las modalidades descritas en el presente documento divulgan una recarga 106 que incluye un conjunto de herramientas 107 que se acopla de forma liberable al miembro alargado 104, 204, se prevé que el conjunto de herramientas se pueda asegurar de forma fija al extremo distal del miembro alargado 104, 204.
Con referencia a la Figura 3A, la recarga 106 incluye una porción del eje 109 y un conjunto de herramientas 107 soportado en un extremo distal de la porción del eje 109. El conjunto de herramientas 107 incluye el primer y segundo miembros de la mordaza 108, 110 que se pueden mover desde una configuración separada (Figura 2) para colocar tejido entre ellos hasta una configuración próxima (no mostrada) para sujetar tejido y grapar tejido posteriormente. El miembro de la mordaza 108 soporta de forma liberable un conjunto del cartucho 112 y el miembro de la mordaza 110 soporta un yunque 111 que incluye una pluralidad de compartimentos o depresiones 120 que se configuran para recibir los sujetadores correspondientes (no mostrados) cuando los sujetadores se despliegan desde el cartucho 112.
Se puede hacer referencia a las Patentes de Estados Unidos Núms. 5,865,361 y 7,225,963, para una discusión más detallada de la construcción y operación de recarga 106.
La Figura 3B ilustra el conjunto de herramientas 107 de la recarga con los miembros de la mordaza 108, 110 en una configuración próxima y con el cartucho 112 separado del miembro de la mordaza 108. La recarga 106 incluye un mecanismo de bloqueo que se configura para bloquear un miembro de accionamiento "D" (Figura 5) para evitar que se dispare el aparato cuando no se ha instalado un cartucho 112 en el miembro de la mordaza 108 o cuando el cartucho 112 instalado en el miembro de la mordaza 108 ya se ha disparado.
Se proporciona un conjunto de pivote 150 (Figura 3B) en un extremo distal del eje 109 que acopla de manera pivotante el conjunto de herramientas 107 al eje 109. Con referencia a las Figuras 4-5, el conjunto de pivote 150 incluye las porciones superior e inferior 151a, 151b que se acoplan operativamente entre sí y a los miembros de la mordaza 108, 110, respectivamente, para permitir la articulación de los miembros de la mordaza 108, 110 (Figura 3B) alrededor de un eje transversal al eje longitudinal de la recarga 106. La porción inferior 151b del conjunto de pivote 150 se configura para soportar operativamente un conjunto de bloqueo 130 que se puede operar para evitar el avance del extremo de trabajo 101 del miembro de accionamiento "D" distalmente cuando el cartucho 112 se ha disparado o está ausente del miembro de la mordaza 108. Específicamente, la porción inferior 151b incluye un par de patas que se extienden distalmente 153a, 153b. Los miembros de pata 153a, 153b se separan entre sí para recibir una viga impulsora 103 del miembro de accionamiento "D" entre ellos (Figuras 4-5 y 7-8) para permitir el avance del extremo de trabajo 101 a través del cartucho 112, como se describirá con mayor detalle a continuación. Los miembros de pata 153a, 153b incluyen una configuración generalmente alargada. En la modalidad ilustrada, el miembro de pata 153b es ligeramente más largo que el miembro de pata 153a e incluye un extremo distal que tiene una configuración generalmente arqueada. Mientras que el miembro de pata 153b se ilustra con una longitud mayor que la longitud del miembro de pata 153a, está dentro del alcance de la presente divulgación proporcionar los miembros de pata 153a, 153b con la misma longitud.
Una abertura 155 se extiende a través de un extremo distal del miembro de pata 153b para recibir un pasador de leva 134 del conjunto de bloqueo 130. Se proporciona una muesca 156 en el miembro de pata 153b adyacente a la abertura 155 y se coloca para recibir una característica de leva 144 del pasador de leva 134 para permitir la rotación del pasador de leva 134 dentro de la abertura 155, como se describirá con mayor detalle a continuación.
Con referencia a las Figuras 4-8, el conjunto de bloqueo 130 incluye un cierre 132, un pasador de leva 134 y un clip de resorte 131. El pasador de leva 134 se configura para girar dentro de la abertura 155 cuando el cartucho 112 se instala en el miembro de la mordaza 108 en respuesta al acoplamiento con la corredera 160. Con este fin, el pasador de leva 134 incluye una configuración generalmente alargada que incluye una porción superior 135 que
tiene una configuración no circular que se configura para recibirse de forma no giratoria dentro de una abertura correspondiente 137 que se define a través del cierre 132. Como tal, la rotación del pasador de leva 134 provoca la rotación correspondiente del cierre 132 entre las posiciones bloqueada (Figura 7) y desbloqueada. Se proporciona una plataforma 139 (Figura 6) en el pasador de leva 134 adyacente a la porción superior 135 y se alinea con una superficie plana superior del miembro de pata 153b cuando el pasador de leva 134 se encaja dentro de la abertura 155. En las modalidades, por ejemplo, la plataforma 139 se puede utilizar para ayudar a sostener el cierre 132 y/o levantar el cierre 132 de la superficie superior del miembro de pata 153b.
El pasador de leva 134 incluye una base 140 que tiene una porción de pestaña 138 que se acopla a una porción inferior del miembro de pata 153b adyacente a la porción con muescas 156 cuando el pasador de leva 134 se encaja dentro de la abertura 155 del miembro de pata 153b. La porción de pestaña 138 se proporciona junto a la base 140 y se extiende parcialmente a lo largo de una superficie circunferencial exterior del pasador de leva 134. La pestaña 138 incluye una característica de leva 144 que se configura para acoplar una extensión de leva 162 dispuesta en una corredera 160 (Figura 9) que se acopla de forma liberable a un mecanismo deslizante de accionamiento 115 del cartucho 112 cuando el cartucho 112 se instala en el miembro de la mordaza 108, como se describirá con mayor detalle a continuación.
Una superficie superior 146 de la porción de pestaña 138 es generalmente plana y se coloca para hacer tope con una superficie inferior del miembro de pata 153b de tal manera que la característica de leva 144 se dispone dentro de la muesca 156 del miembro de pata 133b cuando el pasador de leva 134 se coloca a través de la abertura 155 (como se ve mejor en la Figura 8). La característica de leva 144 se puede mover dentro de la cavidad 156 para permitir la rotación del pasador de leva 134 dentro de la abertura 155 cuando se instala el cartucho 112 y cuando el extremo de trabajo 101 del miembro de accionamiento "D" regresa a la posición retraída. El pasador de leva 134 puede girar dentro de la abertura 155 desde una posición en la que el cierre 132 obstruye el movimiento del miembro de accionamiento "D" (Figura 7) hasta una posición en la que el cierre 132 se separa del miembro de accionamiento "D", como se explicará en más detalles a continuación.
Se proporciona una protuberancia 148 en la base 140 del pasador de leva 134 y se recibe entre las porciones de patas elásticas separadas 133a, 133b del clip de resorte 131 (como se ve mejor en la Figura 8). La protuberancia 148 se coloca entre las porciones de patas 133a, 133b de manera que la rotación del pasador de leva 134 dentro de la abertura 155 provoca que las porciones de patas elásticas 133a, 133b se desvíen hacia afuera (Figura 13). Las porciones de patas 133a, 133b se configuran para entrar en contacto con la protuberancia 148 para retener el pasador de leva 134 y, por lo tanto, el cierre 132 en la posición bloqueada, como se muestra en la Figura 7. En la posición bloqueada, el cierre 132 se coloca para acoplarse a una cavidad 116 provista en el extremo de trabajo 101 del miembro de accionamiento "D" (Figura 5) para evitar el avance distal del miembro de accionamiento "D". En la posición bloqueada, la protuberancia 148 se extiende paralela a y entre las porciones de patas 133a, 133b (Figura 8) y las porciones de patas 133a, 133b no se inclinan. Cuando el cartucho 112 se instala en el miembro de la mordaza 108, la extensión de leva 162 de la corredera 160 entra en contacto con la característica de leva 144 y mueve la característica de leva 144 proximalmente, lo que, a su vez, gira el pasador de leva 134 y, por lo tanto, gira la protuberancia 148 hasta que entra en contacto con las porciones de patas 133a. 133b (Figura 13) para desviar las porciones de patas 133a, 133b del clip de resorte 131 hacia afuera. Como resultado de ello, el cierre 132 gira fuera del acoplamiento con la cavidad 116 del extremo de trabajo 101 para facilitar el avance distal del miembro de accionamiento "D". La extensión de leva 162 de la corredera 160 permanece acoplada con la característica de leva 144 del pasador de leva 134 hasta el momento en que el extremo de trabajo 101 avanza y provoca que se acople con el mecanismo deslizante de accionamiento 115. Cuando esto ocurre, el movimiento de la extensión de leva 162 fuera del acoplamiento con la característica de leva 144 permite que la protuberancia 148 regrese a la configuración bloqueada como resultado de la fuerza de empuje proporcionada por las porciones de patas 133a, 133b del clip de resorte 131 en la protuberancia 148.
Las porciones de pata 133a, 133b del clip de resorte 131 se encuentran en un extremo proximal generalmente arqueado 133c del clip de resorte 131 (Figura 5). La configuración arqueada del extremo proximal 133c proporciona una constante de resorte adecuada que permite que las porciones de patas 133a, 133b desvíen la protuberancia 148 de modo que el cierre 132 se mueva a la posición bloqueada cuando la corredera 160 se desacopla de la característica de leva 144 del pasador de leva 134.
Se proporciona una abertura 133d del clip de resorte 131 junto al extremo proximal 133c y se configura para recibir un remache correspondiente 154 (u otro dispositivo adecuado) que se proporciona en una porción inferior 151b del conjunto de pivote 150 (Figuras 5 y 8). Se puede utilizar una arandela 158 para acoplar al remache 154 para asegurar el conjunto de bloqueo 130 a la porción inferior 151b.
El cierre 132 se configura para evitar el avance distal del extremo de trabajo 101 del miembro de accionamiento "D" cuando el cierre 132 está en una posición bloqueada. El cierre 132 incluye un extremo proximal 145a que define la abertura 137. Un miembro generalmente alargado 145b se extiende distalmente desde el extremo proximal 145a e incluye una punta distal 145c que se configura para recibirse de forma liberable dentro de la cavidad 116 (Figura 7) del extremo de trabajo 101 del miembro de accionamiento "D".
Con referencia nuevamente a la Figura 5, el miembro de accionamiento "D" incluye una viga impulsora 103 que soporta el extremo de trabajo 101. El extremo de trabajo 101 tiene una configuración de viga en I que tiene las pestañas superior e inferior 118a, 118b e incluye una superficie de tope distal 118c que se acopla con una cuña de soporte central 113a (Figura 9) del mecanismo deslizante de accionamiento 115 (Figura 9). El extremo de trabajo 101 se configura para moverse a través del conjunto de herramientas 107 que incluye porciones del canal de la cuchilla 114a (Figura 3A), 114b (Figura 9) que se definen a través de un yunque 111 que se soporta en el miembro de la mordaza 110 y el miembro de la mordaza 108, respectivamente. Específicamente, el extremo de trabajo 101 de la viga impulsora 103 se mueve desde una posición retraída a una posición extendida para hacer avanzar el extremo de trabajo 101 y el mecanismo deslizante de accionamiento 115 a través de un cartucho 112 para grapar y cortar tejido. La cuchilla 105 se coloca para desplazarse ligeramente por detrás del mecanismo deslizante de accionamiento 115 durante un procedimiento de grapado para formar una incisión entre las filas de tejido grapado.
La cavidad 116 se proporciona en un extremo proximal del extremo de trabajo 101 del miembro de accionamiento "D" adyacente a la pestaña superior 118a y se define por una pared lateral 119a y una pared trasera 119b. La pared lateral 119a es angulada y se extiende distalmente desde la pared trasera 119b. La cavidad 116 se configura para recibir de forma deslizante la punta distal 145c del miembro alargado 145b y guiar la punta distal 145c hacia la pared posterior 119b para bloquear el extremo de trabajo 101, como se ve mejor en la Figura 7.
De acuerdo con la presente divulgación, antes de instalar el cartucho 112 en el miembro de la mordaza 108, el extremo de trabajo 101 del miembro de accionamiento "D" se retrae y se encuentra en la posición bloqueada. Más específicamente, las porciones de patas 133a, 133b del clip de resorte 131 se colocan para retener la protuberancia 148 del pasador de leva 134 en una orientación para colocar el cierre 132 en la posición de bloqueo (Figura 7). Para mover el cierre 132 desde la posición bloqueada, se debe instalar un cartucho sin disparar 112 en el miembro de la mordaza 108 como se explica a continuación.
Con referencia a las Figuras 9-14, el miembro de la mordaza 108 del conjunto de herramientas 107 se configura para soportar el conjunto del cartucho extraíble 112 sobre el mismo. El cartucho 112 incluye la pluralidad de sujetadores y una pluralidad de miembros empujadores (no mostrados) que se acoplan operativamente con los sujetadores. El cartucho 112 también incluye una o más ranuras de retención 119 que se colocan longitudinalmente a lo largo de una superficie de contacto con el tejido 121 del cartucho 112 y se configuran para albergar una pluralidad de sujetadores (no mostrados). Una carcasa del cartucho 123 (Figura 9) se acopla al miembro de la mordaza 108. En cualquiera de las modalidades divulgadas en el presente documento, el cartucho 112 se puede acoplar a la mordaza 108 utilizando retenes 125 (Figura 9), cierres, clips o similares. Un cartucho extraíble y reemplazable se divulga en la Solicitud de Patente de Estados Unidos Núm. de serie 13/280,880 titulada Unidad de Carga Multiusos.
Un mecanismo deslizante de accionamiento 115 se coloca en un extremo proximal del cartucho 112 y se mantiene en su lugar dentro del cartucho 112 a través de una configuración de indentación/retención. Específicamente, se proporciona una muesca 164a en una superficie lateral 165 de un soporte de cuña central 113a y se acopla con un retén correspondiente 164b que se proporciona en una pared lateral interior izquierda 149c del cartucho 112 (Figura 10). El retén 164b se configura para liberarse de la muesca 164a cuando el extremo de trabajo 101 del miembro de accionamiento "D" entra en contacto con el mecanismo deslizante de accionamiento 115 y avanza distalmente a través del cartucho 112.
La corredera 160 tiene una configuración generalmente alargada con extremos proximal y distal 163a, 163b. La extensión de leva 162 (una protuberancia generalmente alargada, retén o similar) se proporciona en el extremo proximal 163a de la corredera 160 y se coloca en el mecanismo deslizante de accionamiento 115 para acoplar la característica de leva 144 del conjunto de bloqueo 130 para girar el cierre 132 a la posición desbloqueada cuando el cartucho 112 se acopla al miembro de la mordaza 108 (Figuras 12-13).
La corredera 160 se soporta entre los soportes de cuña elevados del mecanismo deslizante de accionamiento 115 para acoplar de forma liberable la corredera 160 al mecanismo deslizante de accionamiento 115. Específicamente, la corredera 160 se acopla al mecanismo deslizante de accionamiento 115 entre el soporte de cuña central 113a y un soporte de cuña derecho 113b del mecanismo deslizante de accionamiento 115 (Figura 9). Más específicamente, la corredera 160 se acopla de forma liberable al mecanismo deslizante de accionamiento 115 a través de un miembro elástico en forma de resorte 172 (banda, bobina o similar) que tiene los extremos proximal y distal 175a, 175b. El extremo proximal 175a del resorte 172 se configura para desviar el extremo proximal 163a de la corredera 160 contra un extremo proximal de la cuña de soporte derecha 113b de modo que la corredera 160 permanezca acoplada al mecanismo deslizante de accionamiento 115 mientras el cartucho 112 se instala en el miembro de la mordaza 108 y la extensión de leva 162 se acopla con la característica de leva 144 para mover el cierre 132 fuera del acoplamiento con la cavidad 116 del extremo de trabajo 101 del miembro de accionamiento "D". El resorte 172 también se puede utilizar para facilitar el empuje del retén 164b del cartucho 112 para que se acople con la muesca 164a del mecanismo deslizante de accionamiento 115. El resorte 172 se ajusta a presión o por fricción en un par de cavidades correspondientes 174a, 174b que se proporcionan en una pared lateral 166. Específicamente, la cavidad 174b se dispone distal a la cavidad 174a y se configura para recibir el extremo distal 175b del resorte 172. El extremo proximal 175a del resorte 172 se recibe dentro de la cavidad 174a.
La pared lateral 166 de la corredera 160 define una ranura 167 configurada para recibir un miembro guía 168 correspondiente que se extiende desde una pared lateral interior derecha 169b del cartucho 112 (Figura 11). La pared lateral interior derecha 169b, incluido el miembro guía 168, se coloca dentro del cartucho 112 para permitir la traslación distal del mecanismo deslizante de accionamiento 115 a través del cartucho 112. En una modalidad, la ranura 167 tiene una configuración de cola de milano y recibe el miembro guía 168 de la forma correspondiente. Con referencia a las Figuras 11-12, de acuerdo con la presente divulgación, cuando el extremo de trabajo 101 del miembro de accionamiento "D" se hace avanzar para entrar en contacto y hacer avanzar el mecanismo deslizante de accionamiento 115, el extremo de trabajo 101 y el mecanismo deslizante de accionamiento 115, incluida la corredera 160, se mueven inicialmente distalmente al unísono (el resorte 172 mantiene la corredera 160 y el mecanismo deslizante de accionamiento acoplados entre sí). La traslación distal continua del extremo de trabajo 101 del miembro de accionamiento "D" provoca que la ranura 167 reciba el miembro guía 168. El miembro guía 168 guía la corredera 160 para acoplarse con una pared interior 169a del cartucho 112 (Figuras 11-12) adyacente a la pared lateral interior derecha 169b para evitar un mayor movimiento distal de la corredera 160. Cuando el extremo distal 163b de la corredera 160 entra en contacto con la pared interior 169a, la corredera 160 se desacopla del mecanismo deslizante de accionamiento 115. Con la ranura 167 acoplada con el miembro guía 168, la corredera 160 se asegura a la pared lateral interior 169b y evita un mayor movimiento hacia dentro del cartucho 112. Como tal, cuando el extremo de trabajo 101 del miembro de accionamiento "D" se mueve de nuevo a la configuración retraída, la corredera 160 se retiene en la posición avanzada con el extremo distal 163b en contacto con la pared interior 169a. En uso, cuando un conjunto del cartucho 112 no se instala en el miembro de la mordaza 108, el cierre 132 está en una configuración bloqueada con la punta distal 145c del cierre 132 colocada dentro de la cavidad 116 del extremo de trabajo 101 (Figura 7). Con la punta distal 145c del cierre 132 en esta configuración, a medida que el miembro de accionamiento "D" avanza distalmente, el acoplamiento entre la punta distal 145c y la pared posterior 119b de la cavidad 116 evita un mayor avance del miembro de accionamiento "D" (el miembro de accionamiento "D" se bloquea) (Figuras 7-8).
Cuando el cartucho 112 se instala en el miembro de la mordaza 108, la extensión de leva 162 de la corredera 160 entra en contacto con la característica de leva 144 del pasador de leva 134 para girar el pasador de leva 134 dentro de la abertura 155. La rotación del pasador de leva 134 efectúa la rotación correspondiente del cierre 132 para mover el cierre 132 fuera del acoplamiento con la cavidad 116 del extremo de trabajo 101. En esta posición, la protuberancia 148 del pasador de leva 134 desvía las porciones de patas 133a, 133b del sujetador de resorte 131 hacia afuera de tal manera que las porciones de patas 133a, 133b del sujetador de resorte 131 empujan el pasador de leva 134 hacia atrás a una posición en la que el cierre 132 está en la posición bloqueada como se ha descrito anteriormente, véanse las Figuras 13-14 por ejemplo. Además, la corredera 160 se mantiene acoplada al mecanismo deslizante de accionamiento 115 de la manera descrita anteriormente.
Con el cierre 132 y la corredera 160 en la configuración pre-disparada, se permite que el miembro de accionamiento "D", incluido el extremo de trabajo 101, se traslade distalmente más allá de la punta distal 145c del cierre 132 y se acople al mecanismo deslizante de accionamiento 115 de la manera descrita anteriormente. La traslación distal de la corredera 160 provoca que la extensión de leva 162 de la corredera 160 se desacople de la característica de leva 144 y permita que el cierre 132 regrese a la configuración bloqueada a través de la fuerza de empuje proporcionada por las porciones de patas 133a, 133b del clip de resorte 131.
Después de que se haya disparado el cartucho 112, la retracción del miembro de accionamiento "D" provocará que el extremo de trabajo 101 se acople y gire el cierre 132 fuera de la trayectoria del extremo de trabajo 101 de modo que el miembro de accionamiento "D" se moverá proximalmente pasando el cierre 132 hasta que el extremo de trabajo 101 del miembro de accionamiento "D" vuelva a la configuración retraída. En la configuración retraída, el cierre 132 se acopla dentro de la cavidad 116 de modo que la punta distal 145c del cierre 132 se coloca para acoplar la pared posterior 119b de la cavidad 116 para evitar un mayor avance del miembro de accionamiento "D", como se describió anteriormente.
La configuración única del conjunto de bloqueo 130 supera los inconvenientes antes mencionados que, típicamente, se asocian con el aparato de grapado quirúrgico convencional. Específicamente, el conjunto de bloqueo 130 evita el disparo de un aparato de grapado quirúrgico que no tiene un cartucho 112 instalado, o el disparo de un aparato de grapado quirúrgico con un cartucho 112 vacío o gastado instalado.
De lo anterior y con referencia a los diversos dibujos de las figuras, los expertos en la técnica apreciarán que también pueden realizarse ciertas modificaciones a la presente divulgación sin apartarse del alcance de la misma. Por ejemplo, con referencia a las Figuras 15-19, se ilustra una modalidad alternativa del mecanismo de bloqueo. En consecuencia, solo aquellas características que son exclusivas de la modalidad ilustrada en las Figuras 15-19 se describen en el presente documento.
Un yunque 211 incluye un tope en forma de muesca 219 en un extremo proximal del mismo que se configura para bloquear un extremo de trabajo 201 del miembro de accionamiento "D". Específicamente, la muesca 219 se
configura para acoplarse con una pestaña superior 218a del extremo de trabajo 201 del miembro de accionamiento "D" para evitar que el extremo de trabajo 201 se traslade distalmente más allá de la muesca 219.
Un miembro elástico en forma de un resorte ondulado 231 (u otro resorte adecuado, por ejemplo, bobina, torsión, etc.) se acopla operativamente (por ejemplo, a través de láser o soldadura electrónica) a una superficie interior superior 223 del miembro de la mordaza 210. También se pueden utilizar uno o más métodos de acoplamiento adecuados para acoplar el resorte 231 a la superficie interior 223. Por ejemplo, se pueden utilizar adhesivos, diversas interfaces mecánicas y similares para acoplar el resorte 231 a la superficie interior 223. El resorte 231 se coloca próximo a la muesca 219 y se configura para entrar en contacto con una pestaña superior 218a del extremo de trabajo 201 para desviar la pestaña 218a en una dirección generalmente hacia abajo. Específicamente, el resorte 231 desvía la pestaña superior 218a para alinearlo con la muesca 219 de tal manera que la traslación distal del extremo de trabajo 201 del miembro de accionamiento "D" provoca que la pestaña superior 218a del extremo de trabajo 201 se acople con la muesca 219 en el yunque 211 para evitar un mayor avance del miembro de accionamiento "D". En una configuración comprimida, la pestaña superior 218a de la cuchilla 205 se colocará por encima de la muesca 219 para permitir un mayor avance del miembro de accionamiento "D" a través del cartucho. Se proporciona una cavidad 216 en un extremo distal del extremo de trabajo 201 adyacente a una pestaña inferior 218b. Específicamente, la cavidad 216 se define por una pared trasera 220 del extremo de trabajo 201 que tiene una configuración inclinada y se configura para acoplarse a una protuberancia correspondiente en forma de rampa 260 provista en un extremo proximal del mecanismo deslizante de accionamiento 215. El acoplamiento entre la cavidad 216 y la rampa 260 eleva la pestaña superior 218a por encima de la muesca 219 contra la fuerza de empuje del resorte 231 para permitir la traslación distal del extremo de trabajo 201 del miembro de accionamiento "D" más allá de la muesca 219.
A diferencia del mecanismo deslizante de accionamiento 115, el mecanismo deslizante de accionamiento 215 no se configura para acoplarse a una corredera 160. Más bien, la rampa 260 se extiende proximalmente desde el extremo proximal del mecanismo deslizante de accionamiento 215 y se coloca para acoplarse a la pared posterior 220 de la cavidad 216 cuando el extremo de trabajo 201 del miembro de accionamiento "D" se traslada distalmente.
Se utiliza una configuración de indentación/retención (u otra interfaz mecánica adecuada) para mantener el mecanismo deslizante de accionamiento 215 en su lugar mientras se instala el cartucho 212 en el miembro de la mordaza (no mostrado para fines de claridad). En la modalidad ilustrada en las Figuras 15-19, por ejemplo, se proporciona una muesca 240 (Figuras 18-19) en una superficie inferior interior 242 del cartucho 212 y se proporciona un retén 244 correspondiente en una superficie inferior 246 del mecanismo deslizante de accionamiento 215 (Figuras 15-17). Una vez que la cuchilla 205 del extremo de trabajo 201 entra en contacto con el mecanismo deslizante de accionamiento 215, el retén 244 se libera de la muesca 240 y se desliza a lo largo de la superficie inferior interior 242 con el mecanismo deslizante de accionamiento 215.
En uso, cuando el conjunto del cartucho 212 no se instala en el miembro de la mordaza, el resorte 231 está en un estado sin comprimir y configurado para desviar la pestaña superior 218a de la cuchilla 205 de la manera descrita anteriormente. Con la pestaña superior 218a en la configuración inclinada, el extremo de trabajo 201 del miembro de accionamiento "D" se bloquea y se evita que falle.
Cuando el cartucho 212 se instala en el miembro de la mordaza, la rampa 260 se coloca para acoplarse con la cavidad 216 (Figuras 15-16). Específicamente, cuando el miembro de accionamiento "D" avanza, la rampa 260 del mecanismo deslizante de accionamiento 215 se acopla a la pared trasera 220 de la cavidad 216 y eleva la pestaña superior 218a de la cuchilla 205 por encima de la muesca 219 en el yunque 211 (Figura 17) contra la fuerza de empuje proporcionada por el resorte 231. El resorte 231 permanecerá en el estado comprimido hasta el momento en que la rampa 260 se desacople de la cavidad 216. Como resultado de ello, se permite que el miembro de accionamiento "D" se traslade distalmente a través del cartucho 212 para grapar y cortar el tejido grapado (Figura 18). Una vez que la pestaña superior 218a del extremo de trabajo 201 se traslada distalmente más allá de la muesca 219, el resorte 231 volverá a la configuración sin comprimir.
El extremo de trabajo 201 del miembro de accionamiento "D" puede entonces moverse proximalmente de regreso a la configuración retraída. Con el extremo de trabajo 201 en la configuración retraída, el resorte 231 estará en el estado sin comprimir para desviar la pestaña superior 218a de la cuchilla 205 de la manera descrita anteriormente para bloquear el extremo de trabajo 201 del miembro de accionamiento "D" y evitar el disparo de un aparato de grapado quirúrgico que no tiene un cartucho 212 instalado, o el disparo de un aparato de grapado quirúrgico con un cartucho 112 gastado o vacío instalado.
Si bien se han mostrado varias modalidades de la divulgación en los dibujos, no se pretende que la divulgación se limite a las mismas, ya que se pretende que el alcance de la divulgación sea tan amplio como lo permita la técnica y que la especificación se lea del mismo modo. Por lo tanto, la descripción anterior no debe interpretarse como limitante, sino simplemente como ejemplificaciones de modalidades particulares. Los expertos en la técnica podrán prever otras modificaciones dentro del alcance de las reivindicaciones adjuntas a la misma.
Claims (5)
- REIVINDICACIONESi . Un aparato de grapado quirúrgico, (100,200) que comprende:una carcasa (102,202);un miembro alargado (104,204) que se extiende desde la carcasa;un conjunto de herramientas (107) soportado en un extremo distal del miembro alargado, el conjunto de herramientas que incluye un primer miembro de la mordaza y un segundo miembro de la mordaza (210);un conjunto del cartucho (212) configurado para soportarse de forma liberable sobre el primer miembro de la mordaza, el conjunto del cartucho que incluye un mecanismo deslizante de accionamiento (215);un yunque (211) soportado operativamente en el segundo miembro de la mordaza; yun miembro de accionamiento (D) que tiene un extremo de trabajo (201),caracterizado porque:el yunque comprende un tope (219) y el aparato comprende además un resorte (231) acoplado a una superficie interior (223) del segundo miembro de la mordaza, en donde el resorte se configura para empujar el extremo de trabajo (201) del miembro de accionamiento para colocar el extremo de trabajo del miembro de accionamiento en alineación con el tope en el yunque para evitar que el extremo de trabajo del miembro de accionamiento avance distalmente cuando el aparato de grapado quirúrgico no tiene el conjunto del cartucho (212) soportado de manera liberable en la primera mordaza, o cuando se gasta el conjunto del cartucho soportado de forma liberable en la primera mordaza;el mecanismo deslizante de accionamiento (215) comprende al menos una interfaz mecánica; y el extremo de trabajo (201) del miembro de accionamiento comprende al menos una interfaz mecánica,de manera que, cuando el aparato de grapado quirúrgico tiene el conjunto del cartucho soportado de forma liberable en la primera mordaza en un estado inicial sin uso del conjunto del cartucho, la al menos una interfaz mecánica en el mecanismo deslizante de accionamiento se coloca para acoplar la al menos una interfaz mecánica en el extremo de trabajo del miembro de accionamiento para accionar el extremo de trabajo del miembro de accionamiento fuera del acoplamiento con el tope (219) contra la inclinación del resorte (231) para permitir el avance del miembro de accionamiento a través del conjunto de herramientas, yen donde el mecanismo deslizante de accionamiento (215) y el conjunto del cartucho (212) se proveen con una muesca y un retén que se acoplan de forma liberable para mantener el mecanismo deslizante de accionamiento (215) en su lugar mientras se instala el conjunto del cartucho (212) en el primer miembro de la mordaza, la muesca que se libera del retén cuando el extremo de trabajo (201) del miembro de accionamiento (D) entra en contacto con el mecanismo deslizante de accionamiento (215) durante el avance distal del miembro de accionamiento (D).
- 2. Un aparato de grapado quirúrgico de acuerdo con la reivindicación 1, en donde al menos una interfaz mecánica en el mecanismo deslizante de accionamiento (215) es una protuberancia (260) que tiene una configuración inclinada que se extiende proximalmente y la al menos una interfaz mecánica en el extremo de trabajo (201) es una cavidad (216) que tiene una configuración que complementa la configuración inclinada de la protuberancia.
- 3. Un aparato de grapado quirúrgico de acuerdo con la reivindicación 1 ó 2, en donde el mecanismo deslizante de accionamiento incluye dicho retén que se configura para acoplarse de forma liberable con la muesca correspondiente dispuesta dentro del conjunto del cartucho.
- 4. Un aparato de grapado quirúrgico de acuerdo con cualquiera de las reivindicaciones anteriores, en donde el resorte (231) se configura para entrar en contacto con una porción superior (218a) del extremo de trabajo (201) del miembro de accionamiento para desviar el extremo de trabajo en dirección generalmente hacia abajo.
- 5. Un aparato de grapado quirúrgico de acuerdo con cualquiera de las reivindicaciones anteriores, en donde el resorte (231) es un resorte ondulado.
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-
2014
- 2014-01-31 US US14/169,463 patent/US9717498B2/en active Active
- 2014-02-14 AU AU2014200782A patent/AU2014200782B2/en active Active
- 2014-02-28 CA CA3130685A patent/CA3130685A1/en active Pending
- 2014-02-28 CA CA2844337A patent/CA2844337C/en active Active
- 2014-03-12 ES ES14159080T patent/ES2584859T5/es active Active
- 2014-03-12 JP JP2014048710A patent/JP6512740B2/ja active Active
- 2014-03-12 EP EP16168310.7A patent/EP3092955A1/en not_active Withdrawn
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2017
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2018
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CN104042276A (zh) | 2014-09-17 |
ES2584859T3 (es) | 2016-09-29 |
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EP3045122A1 (en) | 2016-07-20 |
EP2777532B1 (en) | 2016-06-29 |
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CA2844337A1 (en) | 2014-09-13 |
EP3092955A1 (en) | 2016-11-16 |
ES2584859T5 (es) | 2019-12-27 |
US11376004B2 (en) | 2022-07-05 |
CA2844337C (en) | 2021-11-09 |
JP2014176664A (ja) | 2014-09-25 |
CA3130685A1 (en) | 2014-09-13 |
CN104042276B (zh) | 2018-04-17 |
JP6512740B2 (ja) | 2019-05-15 |
US10702271B2 (en) | 2020-07-07 |
US20140263550A1 (en) | 2014-09-18 |
EP2777532A2 (en) | 2014-09-17 |
AU2014200782A1 (en) | 2014-10-02 |
US20170325813A1 (en) | 2017-11-16 |
EP2777532B2 (en) | 2019-06-19 |
JP2019030741A (ja) | 2019-02-28 |
AU2014200782B2 (en) | 2018-08-02 |
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