ES2322394T3 - Puerta basculante para un dispositivo de bloqueo en una grapadora cortadora curvada. - Google Patents
Puerta basculante para un dispositivo de bloqueo en una grapadora cortadora curvada. Download PDFInfo
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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
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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
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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
- A61B2017/07221—Stapler heads curved
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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
- A61B2017/2945—Curved jaws
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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
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Abstract
Una grapadora quirúrgica lineal (20) adaptada para aplicar una pluralidad de sujetadores quirúrgicos a tejido corporal, incluyendo la grapadora quirúrgica: un bastidor de soporte (81); una estructura de yunque (122) montada en el extremo distal del bastidor de soporte (81); un alojamiento de cartucho (120) conteniendo una pluralidad de sujetadores quirúrgicos, pudiendo moverse el alojamiento de cartucho (120) con relación a la estructura de yunque (122) entre una primera posición espaciada y una segunda posición en estrecha aproximación; un mecanismo de disparo asociado con el alojamiento de cartucho (120) para expulsar los sujetadores quirúrgicos del alojamiento de cartucho (120) para moverlos contra la estructura de yunque (122); y un mecanismo de bloqueo (180) que interactúa con el alojamiento de cartucho (120) para activación y desactivación selectivas; caracterizada porque el mecanismo de bloqueo (180) incluye una lengüeta de puerta basculante (182) fijada al alojamiento de cartucho (120) en una posición junto a una palanca de bloqueo (184) montada en el bastidor de soporte (81) de la grapadora quirúrgica lineal (20) junto al alojamiento de cartucho, de tal manera que el disparo de la grapadora quirúrgica lineal (20) gire la lengüeta de puerta basculante (182) liberando la palanca de bloqueo (184) para evitar el disparo adicional del alojamiento de cartucho usado (120).
Description
Puerta basculante para un dispositivo de bloqueo
en una grapadora cortadora curvada.
La presente invención se refiere a instrumentos
de corte y grapado quirúrgicos adaptados para uso en el diagnóstico
y la terapia de patologías tratadas por resección con grapas. Más en
concreto, la invención se refiere a un mecanismo de bloqueo para
utilización en unión con instrumentos de corte y grapado
quirúrgicos.
Los instrumentos de corte y grapado quirúrgicos
se utilizan comúnmente en el diagnóstico y tratamiento de
patologías tratadas por resección con grapas. Los instrumentos de
corte y grapado quirúrgicos proporcionan un mecanismo para ampliar
la utilización transluminal de dispositivos mecánicos de sutura
introducidos mediante el canal anal, la boca, el estómago y los
accesos de servicio. Aunque los instrumentos de corte y grapado
quirúrgicos son de uso muy común con patologías rectales, los
instrumentos de corte y grapado quirúrgicos pueden ser usados en
varios entornos.
Con el tiempo se han desarrollado instrumentos
de corte y grapado quirúrgicos. Estos instrumentos incluyen
generalmente un bastidor de soporte, un yunque unido al bastidor de
soporte y un alojamiento de cartucho que contiene una pluralidad de
grapas. Los instrumentos también incluyen un accionador dentro del
alojamiento de cartucho que expulsa simultáneamente todas las
grapas al yunque para dar a las grapas una forma general de B,
suturando el tejido conjuntamente. Además, estos instrumentos
incluyen mecanismos de aproximación que permiten que el alojamiento
de cartucho y el yunque se muevan uno con relación a otro para
recibir tejido entremedio. Finalmente, los instrumentos incluyen un
mecanismo de disparo para mover el accionador hacia delante para
formar las grapas contra el yunque.
Además de los componentes básicos de los
instrumentos de corte y grapado, estos productos necesitan un
mecanismo de bloqueo que permita la activación y/o desactivación de
los medios de disparo de tal manera que el módulo de cartucho pueda
ser utilizado como una pinza cuando sea necesario durante una
emergencia. Sin embargo, el mecanismo de bloqueo está diseñado de
tal manera que el mecanismo de disparo solamente funcione con un
módulo de cartucho que no haya sido usado previamente.
EP 1 550 413 describe una grapadora quirúrgica
lineal que tiene un mecanismo de bloqueo según el preámbulo de la
reivindicación 1.
Los actuales instrumentos de grapado quirúrgico
incluyen un bloqueo de barra de disparo que es activado por el
accionador. Cuando se carga un nuevo módulo de cartucho en el
instrumento, la posición del accionador, en lo que se refiere al
módulo de cartucho en el instrumento, interfiere con el brazo de
bloqueo de forma que el instrumento pueda disparar grapas. Después
de que el instrumento dispara grapas, la posición del accionador se
mueve distalmente de forma que ya no interfiera con el brazo de
bloqueo. El brazo de bloqueo se mueve a una posición que ahora
interfiere con la barra de disparo, pero evita que la barra de
disparo se mueva distalmente. Sin embargo, el mecanismo de bloqueo
de la técnica anterior tiene un inconveniente que la presente
invención intenta superar.
En particular, los dispositivos de la técnica
anterior permiten que el accionador sea empujado de nuevo de manera
que pueda dar lugar a la desactivación del bloqueo puesto que
tienden a depender de la posición del accionador en relación al
mecanismo de bloqueo. Estos productos, si el accionador se empujase
hacia atrás lo suficiente para ocultar visualmente el accionador en
el cartucho, ya no proporcionaría al usuario un indicador visual de
un cartucho gastado. Además, algunos mecanismos de bloqueo de la
técnica anterior no realizan un bloqueo fuerte debido a los
componentes que interactúan en la formación del bloqueo después del
disparo. Como tal, se necesita un mecanismo de bloqueo mejorado que
proporcione una clara indicación de que el mecanismo de bloqueo ha
sido activado y supere los otros inconvenientes de los mecanismos de
bloqueo de la técnica anterior. La presente invención proporciona
dicho mecanismo de bloqueo.
Por lo tanto, un objeto de la presente invención
es proporcionar una grapadora quirúrgica lineal adaptada para
aplicar una pluralidad de sujetadores quirúrgicos a tejido corporal.
La grapadora quirúrgica incluye una estructura de yunque y un
alojamiento de cartucho conteniendo una pluralidad de sujetadores
quirúrgicos. El alojamiento de cartucho y la estructura de yunque
son relativamente móviles entre una primera posición espaciada y
una segunda posición en estrecha aproximación una con otra. Un
mecanismo de disparo está asociado con el alojamiento de cartucho
para expulsar los sujetadores quirúrgicos del alojamiento de
cartucho para moverlos contra la estructura de yunque. Un mecanismo
de bloqueo interactúa con el alojamiento de cartucho para
activación y desactivación selectivas. El mecanismo de bloqueo
incluye una lengüeta de puerta basculante fijada al alojamiento de
cartucho en una posición adyacente a una palanca de bloqueo, de tal
manera que el disparo de la grapadora quirúrgica lineal gire la
lengüeta de puerta basculante liberando la palanca de bloqueo para
evitar el disparo adicional del alojamiento de cartucho usado.
También es un objeto de la presente invención
proporcionar una grapadora quirúrgica lineal donde la palanca de
bloqueo es empujada por muelle.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde la palanca de
bloqueo está montada en un bastidor de soporte de la grapadora
quirúrgica lineal junto al alojamiento de cartucho.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde la palanca de
bloqueo asienta dentro de un rebaje formado en el bastidor de
soporte de la grapadora quirúrgica lineal.
También es otro objeto de la presente invención
proporcionar una grapadora quirúrgica lineal donde la palanca de
bloqueo incluye una superficie superior expuesta del rebaje y una
superficie inferior asentada dentro del rebaje.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde la superficie
superior incluye un elemento de lengüeta conformado y dimensionado
para enganchar el mecanismo de disparo de manera que se evite el
disparo de la presente grapadora quirúrgica lineal.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde la lengüeta de
puerta basculante está fijada pivotantemente al alojamiento de
cartucho de tal manera que asiente encima de la palanca de bloqueo
cuando se coloca para bloquear la palanca de bloqueo antes del
disparo de la grapadora quirúrgica lineal.
También es un objeto de la presente invención
proporcionar una grapadora quirúrgica lineal donde la lengüeta de
puerta basculante se mueve entre una primera posición
sustancialmente transversal a un eje longitudinal de la grapadora
quirúrgica lineal y una segunda posición sustancialmente paralela al
eje longitudinal de la grapadora quirúrgica lineal, la lengüeta de
puerta basculante asienta encima de la palanca de bloqueo en su
primera posición que sujeta la palanca de bloqueo en una posición
desbloqueada.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde antes del disparo
de la grapadora quirúrgica lineal, la lengüeta de puerta basculante
se coloca ligeramente hacia delante de la palanca de bloqueo de tal
manera que la rotación de la lengüeta de puerta basculante haga que
la lengüeta de puerta basculante entre en contacto con la palanca
de bloqueo.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde la lengüeta de
puerta basculante se mueve entre una primera posición
sustancialmente transversal a un eje longitudinal de la grapadora
quirúrgica lineal y una segunda posición sustancialmente paralela al
eje longitudinal de la grapadora quirúrgica lineal, de tal manera
que cuando la lengüeta de puerta basculante esté en su primera
posición, asiente hacia delante de una superficie superior de la
palanca de bloqueo y durante el disparo de la grapadora quirúrgica
la lengüeta de puerta basculante se gira a su segunda posición
sustancialmente paralela al eje longitudinal de la grapadora
quirúrgica y se quita de la superficie superior de la palanca de
bloqueo permitiendo que la palanca de bloqueo se desplace hacia
arriba a una posición bloqueada.
También es un objeto de la presente invención
proporcionar una grapadora quirúrgica lineal donde la fuerza del
mecanismo de disparo gira la lengüeta de puerta basculante con
fuerza suficiente para desviar la palanca de bloqueo hacia abajo al
rebaje y fuera de la barra de disparo, y el movimiento de la
lengüeta de puerta basculante continúa a su segunda posición
sustancialmente paralela al eje longitudinal del dispositivo de
grapado quirúrgico donde, y una vez que el mecanismo de disparo se
ha retirado, la palanca de bloqueo vuelve a una posición de bloqueo
evitando toda rotación adicional de la puerta basculante y el
disparo de la grapadora quirúrgica lineal.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal que incluye una
estructura de yunque y un alojamiento de cartucho conteniendo una
pluralidad de sujetadores quirúrgicos. El alojamiento de cartucho y
estructura de yunque son relativamente móviles entre una primera
posición espaciada y una segunda posición en estrecha aproximación
una con otra. Un mecanismo de disparo está asociado con el
alojamiento de cartucho para expulsar los sujetadores quirúrgicos
del alojamiento de cartucho para moverlos contra la estructura de
yunque. Un mecanismo de bloqueo interactúa con el alojamiento de
cartucho para activación y desactivación selectivas. El mecanismo
de bloqueo incluye una puerta basculante fijada pivotantemente al
alojamiento de cartucho de tal manera que el disparo de la
grapadora quirúrgica lineal gire la puerta basculante para evitar
el disparo adicional del alojamiento de cartucho usado.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde una superficie
delantera de la puerta basculante incluye una sección cortada
colocada para enganchar un accionador de la grapadora y evitar su
movimiento adicional.
También es un objeto de la presente invención
proporcionar una grapadora quirúrgica lineal incluyendo una
lengüeta de bloqueo que evita el movimiento de la puerta basculante
después de la rotación de la puerta basculante durante el
disparo.
Otro objeto de la presente invención es
proporcionar una grapadora quirúrgica lineal donde la puerta
basculante está montada a lo largo de una pared lateral del
alojamiento de cartucho.
Otros objetos y ventajas de la presente
invención serán evidentes por la descripción detallada siguiente
considerada en unión con los dibujos acompañantes, que exponen
algunas realizaciones de la invención.
\vskip1.000000\baselineskip
La figura 1 es una vista en perspectiva de la
grapadora quirúrgica lineal según la presente invención.
La figura 2 es una vista en perspectiva de la
grapadora quirúrgica lineal con el módulo de cartucho quitado.
La figura 3 es una vista en perspectiva de la
grapadora quirúrgica lineal con el alojamiento de cartucho movido a
una posición intermedia.
La figura 4 es una vista en perspectiva de la
grapadora quirúrgica lineal con el alojamiento de cartucho movido a
una posición cerrada.
La figura 5 es una vista en perspectiva de la
grapadora quirúrgica lineal con el gatillo de disparo en una
posición de disparo.
Las figuras 6 a 13 muestran los varios pasos
implicados en el accionamiento del mecanismo de bloqueo usado con
la presente grapadora quirúrgica lineal.
La figura 14 es una realización alternativa del
mecanismo de bloqueo descrito con referencia a las figuras 6 a
13.
Las figuras 15, 16, 17 y 18 muestran un
mecanismo de bloqueo alternativo no según la presente invención.
\vskip1.000000\baselineskip
Aquí se describe la realización detallada de la
presente invención. Se deberá entender, sin embargo, que la
realización descrita es simplemente ejemplar de la invención, que
puede ser realizada de varias formas. Por lo tanto, los detalles
aquí descritos no se han de interpretar en sentido limitativo, sino
simplemente como la base para las reivindicaciones y como una base
para revelar a los expertos en la técnica cómo hacer y/o usar la
invención.
Con referencia a las varias figuras se describe
un instrumento quirúrgico 20 adaptado para aplicar una pluralidad
de sujetadores quirúrgicos a tejido corporal. El instrumento
quirúrgico 20 incluye un yunque 122 y un alojamiento de cartucho
121 conteniendo una pluralidad de sujetadores quirúrgicos. El
alojamiento de cartucho 121 y el yunque 122 son relativamente
móviles entre una primera posición espaciada y una segunda posición
en estrecha aproximación una con otra. Un mecanismo de disparo está
asociado con el alojamiento de cartucho 121 para expulsar los
sujetadores quirúrgicos del alojamiento de cartucho 121 para
moverlos contra el yunque 122. El mecanismo de bloqueo 180 incluye
una lengüeta de puerta basculante 182 fijada al alojamiento de
cartucho 120 en una posición adyacente a una palanca de bloqueo
184, de tal manera que el disparo de la grapadora quirúrgica lineal
20 gire la lengüeta de puerta basculante 182 liberando la palanca de
bloqueo 184 para evitar el disparo adicional del alojamiento de
cartucho usado 120.
Con referencia a la figura 1 en combinación con
las figuras 2 a 5, se representa un instrumento de corte y grapado
quirúrgico, en particular, una grapadora quirúrgica lineal 20 que
está diseñada para grapar y cortar tejido. La grapadora quirúrgica
lineal 20 tiene un mango 21 en un primer extremo próximo y un
efector de extremo 80 en un extremo distal opuesto. El efector de
extremo 80 está curvado según una realización preferida de la
presente invención. Chapas estructurales derecha e izquierda (a
menudo llamadas "chapas de mango") 34, 35, respectivamente,
conectan el mango 21 al efector de extremo 80 del instrumento (la
chapa de mango izquierda no se representa en la figura 1). El mango
21 tiene una envuelta derecha 22 acoplada a una envuelta izquierda
(la envuelta izquierda no se representa en la figura 1). El mango 21
también tiene una porción de cuerpo 23 para agarrar y maniobrar la
grapadora quirúrgica lineal 20 (véanse las figuras 2 a 5).
El efector de extremo 80 es un conjunto
sujetador quirúrgico que incluye un módulo de cartucho 120 y una
estructura de soporte en forma de C 81. El término en forma de C se
usa en toda la memoria descriptiva para describir la naturaleza
cóncava de la estructura de soporte 81 y el módulo de cartucho 120.
La construcción en forma de C facilita una mejor funcionalidad, y
el término en forma de C usado en la presente memoria descriptiva
se deberá interpretar incluyendo varias formas cóncavas que
igualmente mejorarán la funcionalidad de los instrumentos de corte
y grapado quirúrgicos. Aunque se contempla una construcción en forma
de C según una realización preferida de la presente invención, los
expertos en la técnica apreciarán que la estructura de soporte puede
tomar varias formas sin apartarse del alcance de la presente
invención. El extremo distal 30 de un elemento de cierre 28 está
dispuesto para recibir el módulo de cartucho 120. El efector de
extremo 80 también incluye un mecanismo de bloqueo de seguridad 180
(mejor visto en las figuras 6 a 13) para evitar el disparo de un
módulo de cartucho 120 previamente disparado. El módulo de cartucho
120 contiene un alojamiento de cartucho 121 acoplado a un yunque
122. El módulo de cartucho 120 también incluye un pasador de
retención 125, una cuchilla 126, un retén extraíble 160, una
superficie de contacto con tejido 127 que presenta una pluralidad de
ranuras de contención de grapas 128 en formación escalonada en una
o más filas (es decir, líneas de grapa) a ambos lados de la cuchilla
126. Se disparan grapas (no representadas) del alojamiento de
cartucho 121 contra la superficie de formación de grapa 129 del
yunque 122 que mira a la superficie de contacto de tejido 127 del
alojamiento de cartucho 121.
Como será evidente en base a la descripción
siguiente, la presente grapadora quirúrgica lineal 20 está diseñada
como un dispositivo de disparo múltiple con un módulo de cartucho
sustituible 120. Sin embargo, se deberá entender que muchos de los
conceptos subyacentes de la presente invención se pueden aplicar
igualmente a dispositivos de un solo disparo sin apartarse del
alcance de la presente invención. Teniendo esto en mente, la
operación de los componentes distintos del mecanismo de bloqueo se
describen en la Patente de Estados Unidos, número 11/014.910,
titulada "Cortadora grapadora curvada conformada para pelvis de
varón", presentada 20/12/2004, del mismo propietario.
Con referencia a las figuras 6 a 13 (vista
cortada de la estructura de cartucho y soporte), ahora se
describirán los componentes del mecanismo de bloqueo de dispositivo
disparado 180. El mecanismo de bloqueo de dispositivo disparado 180
según la presente invención emplea una lengüeta de puerta basculante
182 fijada al módulo de cartucho no usado 120 en una posición
adyacente a una palanca de bloqueo empujada por muelle 184. Más
específicamente, la lengüeta de puerta basculante 182 está
conformada y dimensionada para colocarse encima de la palanca de
bloqueo 184 con el fin de evitar el movimiento hacia arriba de la
palanca de bloqueo 184 a una posición de bloqueo en la que evita el
movimiento hacia delante de la barra de disparo 43. Teniendo esto en
mente, y antes del disparo de la barra de disparo 43, la lengüeta
de puerta basculante 182 se coloca directamente encima de la
palanca de bloqueo 184 de tal manera que contrarreste el empuje del
muelle que empuja la palanca de bloqueo 184 a una posición de
bloqueo.
Más específicamente, la palanca de bloqueo 184
está montada en la estructura de soporte 81 de la grapadora
quirúrgica lineal 20. La palanca de bloqueo 184 asienta dentro de un
rebaje 196 formado en la estructura de soporte 81 de la grapadora
quirúrgica lineal 20. La palanca de bloqueo 184 incluye una
superficie superior 188 expuesta del rebaje 196 y una superficie
inferior 190 asentada dentro del rebaje 196. La superficie superior
188 incluye un elemento de lengüeta 192 conformado y dimensionado
para enganchar la barra de disparo 43 de una manera que se
explicará más adelante con más detalle. Un muelle 194 está colocado
entre la superficie inferior 190 y el rebaje 196. El muelle 194
sirve para empujar la palanca de bloqueo 184 hacia arriba a una
posición de bloqueo en línea con la parte de disparo de la barra de
disparo 43.
La lengüeta de puerta basculante 182 está fijada
pivotantemente al módulo de cartucho 120 de tal manera que asiente
encima de la palanca de bloqueo 184 cuando se coloque para bloquear
la palanca de bloqueo 184 dentro del rebaje 196 contrarrestando la
fuerza del muelle 194. Es decir, y como se describirá más adelante
con más detalle, la lengüeta de puerta basculante 182 se mueve
entre una primera posición sustancialmente transversal al eje
longitudinal de la grapadora quirúrgica lineal 20 y una segunda
posición sustancialmente paralela al eje longitudinal de la
grapadora quirúrgica lineal 20. Mientras la lengüeta de puerta
basculante 182 está en su primera posición, asienta encima de la
superficie superior 188 de la palanca de bloqueo 184 y sujeta la
palanca de bloqueo 184 en su posición desbloqueada. Durante el
disparo de la grapadora quirúrgica lineal 20, la lengüeta de puerta
basculante 182 se gira a su segunda posición sustancialmente
paralela al eje longitudinal de la grapadora quirúrgica lineal 20 y
quita de la superficie superior 188 de la palanca de bloqueo 184
permitiendo que el muelle 194 empuje la palanca de bloqueo 184
hacia arriba a su posición bloqueada.
Las figuras 6 y 7 muestran el mecanismo de
bloqueo 180 al inicio de su ciclo. La lengüeta de puerta basculante
182 está en su primera posición sustancialmente transversal al eje
longitudinal del dispositivo de grapado quirúrgico 20. La lengüeta
de puerta basculante 182 asienta directamente sobre la palanca de
bloqueo 184 que sujeta la palanca de bloqueo 184 dentro del rebaje
196 de tal manera que no interfiera con el disparo de la grapadora
quirúrgica lineal 20, y en particular, la barra de disparo 43.
Cuando el mecanismo de aproximación se activa
como se representa en las figuras 8 y 9, es decir, la activación
del gatillo de cierre 26, el alojamiento de cartucho 121 avanza a la
posición completamente cerrada. Sin embargo, la lengüeta de puerta
basculante 182 permanece sustancialmente transversal al eje
longitudinal de la grapadora quirúrgica lineal 20, sujetando la
palanca de bloqueo 184 dentro del rebaje 196 en su posición
desbloqueada.
Con referencia a las figuras 10 y 11, la
activación del conjunto de transmisión de disparo avanza la barra
de disparo 43 a través de la lengüeta de puerta basculante 182. El
movimiento de la barra de disparo 43 a través de la lengüeta de
puerta basculante 182 tiene lugar independientemente de la posición
del accionador 131 o la terminación de la carrera de disparo. Este
movimiento de la barra de disparo 43 a través de la lengüeta de
puerta basculante 182 mueve la lengüeta de puerta basculante 182 de
su primera posición evitando que la palanca de bloqueo empujada por
muelle 184 se desplace hacia arriba a su segunda posición
sustancialmente paralela al eje longitudinal de la grapadora
quirúrgica lineal 20. Cuando está en su segunda posición, la
lengüeta de puerta basculante 182 ya no está colocada encima de la
superficie superior 188 de la palanca de bloqueo 184 y ya no
bloquea el movimiento hacia arriba de la palanca de bloqueo 184 en
base al empuje del muelle 194 colocado entre la superficie inferior
190 de la palanca de bloqueo 184 y el rebaje 196.
Después de que la lengüeta de puerta basculante
182 se desplaza a su segunda posición y la lengüeta de puerta
basculante 182 ya no sujeta la palanca de bloqueo 184 en su posición
desbloqueada, la barra de disparo 43 asienta momentáneamente encima
de la palanca de bloqueo 184 sujetándola dentro del rebaje 196.
Cuando se retira el conjunto de transmisión de disparo, en
particular, la barra de disparo 43, la palanca de bloqueo 184 ya no
se mantiene dentro del rebaje 196 por la lengüeta de puerta
basculante 182 o la barra de disparo 43, y la palanca de bloqueo
184 se mueve a una posición bloqueada bajo la fuerza del muelle 194.
Mientras esté en esta posición, la palanca de bloqueo 184 bloqueará
cualquier intento adicional de activar los medios de disparo
(véanse las figuras 12 y 13). Aunque la palanca de bloqueo 184
bloquee el movimiento hacia atrás del accionador 131, la barra de
disparo 43 se retira en último término a su posición próxima.
Después de liberar la palanca de bloqueo 184 a su posición superior
cuando la barra de disparo 43 se mueve a su posición distal, hay una
superficie inclinada 185 en la cara distal de la palanca de bloqueo
184 que actúa como una excéntrica que permite que la barra de
disparo 43 empuje "hacia abajo" durante la retracción hacia
atrás de la barra de disparo 43.
Con referencia a la figura 14, aunque se
describe una palanca de bloqueo lineal según una realización
preferida de la presente invención, la palanca de bloqueo 184'
también podría ser una palanca de bloqueo rotativa 184' que se
monte en un extremo 184a' para rotación pivotante alrededor del
montaje de tal manera que la palanca de bloqueo rotativa hacia
arriba 184' empujada por muelle 194' todavía funcione de la misma
forma que la descrita con referencia a la realización preferida
descrita con referencia a las figuras 6 a 13.
Según otra realización ejemplar exenta de la
presente invención, y con referencia a las figuras 15, 16 y 17, la
lengüeta de puerta basculante no asienta constantemente encima de la
palanca de bloqueo antes de disparar como se ha descrito
anteriormente con referencia a las figuras 6 a 13. El presente
mecanismo de bloqueo de dispositivo disparado 280 emplea una puerta
basculante 282 fijada pivotantemente al módulo de cartucho no usado
220. Según una realización preferida, el módulo de cartucho 220
incluye un alojamiento de cartucho 223 y la puerta basculante 282
está fijada a una pared lateral 221 del módulo de cartucho 220.
Teniendo esto en mente, y como se apreciará en base a la
descripción siguiente, la pared lateral 221 del módulo de cartucho
220 está provista de un rebaje 222 conformado y dimensionado para
recibir la puerta basculante 282 cuando gira hacia la pared lateral
221 permitiendo que la barra de disparo 243 pase.
La puerta basculante 282 está conformada y
dimensionada para rotación con el fin de bloquear el movimiento
adicional del accionador disparado 231 y en consecuencia evitar el
uso del módulo de cartucho previamente disparado 220. Teniendo esto
en mente, la puerta basculante incluye una superficie delantera 288
que tiene una sección cortada 286 junto a su extremo distal y una
superficie inclinada 289 adyacente a su extremo próximo. Se coloca
una superficie plana 291 entre la sección cortada 286 y la
superficie inclinada 289.
La configuración de pre-disparo
del presente mecanismo de bloqueo 280 se representa con referencia a
la figura 15. El módulo de cartucho 220 se carga con la puerta
basculante 282 en su primera posición como se representa. El
bloqueo de la puerta basculante 282 se mantiene en su primera
posición hasta que la barra de disparo 243 se mueva hacia delante y
gira la puerta basculante 282 a su segunda posición, o posición de
"cartucho gastado" (véanse las figuras 16, 17 y 18). La
lengüeta de bloqueo 284 asienta directamente detrás de la lengüeta
de puerta basculante 282 y asiste a mantener la puerta basculante
282 en su primera posición.
Al disparo del conjunto de transmisión de
disparo, la barra de disparo 243 es empujada hacia delante para
enganchar la puerta basculante 282, en particular, la superficie
plana 291 de la puerta basculante 282. La fuerza de la barra de
disparo 243 gira la puerta basculante 282 con fuerza suficiente para
desviar la lengüeta de bloqueo 284, permitiendo que la puerta
basculante 282 se mantenga dentro del rebaje 222 formado en la pared
lateral 221 del alojamiento de cartucho 223 entre la lengüeta de
bloqueo 284 y la pared del módulo de cartucho 220. El movimiento de
la lengüeta de bloqueo 284 se facilita más por la provisión de una
superficie biselada 285 sobre la que la puerta basculante 282 se
mueve durante su rotación, y el movimiento de la barra de disparo
243 con relación a la puerta basculante se facilita más por la
superficie inclinada 289 de la puerta basculante 282 sobre la que
la barra de disparo 243 desliza cuando gira la puerta basculante
282.
En esta posición, la puerta basculante 282 está
en su segunda posición sustancialmente paralela al eje longitudinal
de la grapadora quirúrgica lineal. Mientras está en esta segunda
posición, la sección cortada 286 a lo largo de la superficie
delantera 288 de la puerta basculante 282 se coloca para evitar el
movimiento hacia atrás del accionador 231, y en consecuencia evita
el uso adicional del módulo de cartucho 220.
Los mecanismos de bloqueo según la presente
invención superan el inconveniente de la técnica anterior
proporcionando varias ventajas. En particular, la presente
invención evita que el accionador sea empujado de nuevo evitando el
bloqueo. Además, el mecanismo de bloqueo de la presente invención es
mejor que otros mecanismos de bloqueo porque opera entre la
estructura de yunque, que se construye típicamente para carga alta,
y la barra de disparo para producir directamente un bloqueo más
fuerte. Además, el accionador se expone encima de la cubierta de
cartucho después del disparo, proporcionando un indicador visual de
un cartucho gastado. Esto ofrece la posibilidad de adaptar la
puerta basculante de bloqueo para bloquear el accionador en posición
y evitar que el usuario apague sin darse cuenta esta característica
visual de seguridad.
Aunque se han representado y descrito las
realizaciones preferidas, se entenderá que no se intenta limitar la
invención mediante dicha descripción, sino que más bien se ha
previsto cubrir todas las modificaciones y construcciones
alternativas que caigan dentro del alcance de las
reivindicaciones.
Claims (9)
1. Una grapadora quirúrgica lineal (20) adaptada
para aplicar una pluralidad de sujetadores quirúrgicos a tejido
corporal, incluyendo la grapadora quirúrgica:
- un bastidor de soporte (81);
- una estructura de yunque (122) montada en el extremo distal del bastidor de soporte (81);
- un alojamiento de cartucho (120) conteniendo una pluralidad de sujetadores quirúrgicos, pudiendo moverse el alojamiento de cartucho (120) con relación a la estructura de yunque (122) entre una primera posición espaciada y una segunda posición en estrecha aproximación;
- un mecanismo de disparo asociado con el alojamiento de cartucho (120) para expulsar los sujetadores quirúrgicos del alojamiento de cartucho (120) para moverlos contra la estructura de yunque (122); y
- un mecanismo de bloqueo (180) que interactúa con el alojamiento de cartucho (120) para activación y desactivación selectivas; caracterizada porque
- el mecanismo de bloqueo (180) incluye una lengüeta de puerta basculante (182) fijada al alojamiento de cartucho (120) en una posición junto a una palanca de bloqueo (184) montada en el bastidor de soporte (81) de la grapadora quirúrgica lineal (20) junto al alojamiento de cartucho, de tal manera que el disparo de la grapadora quirúrgica lineal (20) gire la lengüeta de puerta basculante (182) liberando la palanca de bloqueo (184) para evitar el disparo adicional del alojamiento de cartucho usado (120).
2. La grapadora quirúrgica lineal según la
reivindicación 1, donde la palanca de bloqueo (184) es empujada por
muelle.
3. La grapadora quirúrgica lineal según la
reivindicación 2, donde la palanca de bloqueo (184) asienta dentro
de un rebaje (196) formado en el bastidor de soporte (81) de la
grapadora quirúrgica lineal.
4. La grapadora quirúrgica lineal según la
reivindicación 3, donde la palanca de bloqueo (184) incluye una
superficie superior (188) expuesta del rebaje (196) y una superficie
inferior (190) asentada dentro del rebaje (188).
5. La grapadora quirúrgica lineal según la
reivindicación 4, donde la superficie superior (196) incluye un
elemento de lengüeta (192) conformado y dimensionado para enganchar
el mecanismo de disparo con el fin de evitar el disparo de la
grapadora quirúrgica lineal presente.
6. La grapadora quirúrgica lineal según la
reivindicación 1, donde la lengüeta de puerta basculante (182) está
fijada pivotantemente al alojamiento de cartucho (120) de tal manera
que asiente encima de la palanca de bloqueo (184) cuando se coloque
para bloquear la palanca de bloqueo (184) antes de disparar la
grapadora quirúrgica lineal.
7. La grapadora quirúrgica lineal según la
reivindicación 1, donde la lengüeta de puerta basculante (182) se
mueve entre una primera posición sustancialmente transversal a un
eje longitudinal de la grapadora quirúrgica lineal y una segunda
posición sustancialmente paralela al eje longitudinal de la
grapadora quirúrgica lineal, la lengüeta de puerta basculante (182)
asienta encima de la palanca de bloqueo (184) en su primera posición
sujetando la palanca de bloqueo (184) en una posición
desbloqueada.
8. La grapadora quirúrgica lineal según la
reivindicación 1, donde, antes del disparo de la grapadora
quirúrgica lineal, la lengüeta de puerta basculante (182) se coloca
ligeramente hacia delante de la palanca de bloqueo (184) de tal
manera que la rotación de la lengüeta de puerta basculante (184)
haga que la lengüeta de puerta basculante (182) entre en contacto
con la palanca de bloqueo (184).
9. La grapadora quirúrgica lineal según la
reivindicación 8, donde la lengüeta de puerta basculante (182) se
mueve entre una primera posición sustancialmente transversal a un
eje longitudinal de la grapadora quirúrgica lineal y una segunda
posición sustancialmente paralela al eje longitudinal de la
grapadora quirúrgica lineal, de tal manera que cuando la lengüeta
de puerta basculante (182) esté en su primera posición, asiente
hacia delante de una superficie superior (196) de la palanca de
bloqueo (184) y durante el disparo de la grapadora quirúrgica la
lengüeta de puerta basculante (182) se gire a su segunda posición
sustancialmente paralela al eje longitudinal de la grapadora
quirúrgica y quite de la superficie superior (196) de la palanca de
bloqueo (184) dejando que la palanca de bloqueo (184) se desplace
hacia arriba a una posición bloqueada.
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| ES2322394T5 ES2322394T5 (es) | 2013-03-19 |
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| ES06254107T Active ES2322394T5 (es) | 2005-08-05 | 2006-08-04 | Puerta basculante para un dispositivo de bloqueo en una grapadora cortadora curvada |
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| CY (1) | CY1109086T1 (es) |
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| DK (1) | DK1749486T4 (es) |
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| MX (1) | MXPA06008889A (es) |
| PL (1) | PL1749486T5 (es) |
| PT (1) | PT1749486E (es) |
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| US6817508B1 (en) * | 2000-10-13 | 2004-11-16 | Tyco Healthcare Group, Lp | Surgical stapling device |
| US20050143759A1 (en) | 2003-12-30 | 2005-06-30 | Kelly William D. | Curved cutter stapler shaped for male pelvis |
| US6988650B2 (en) * | 2003-12-30 | 2006-01-24 | Ethicon Endo-Surgery, Inc. | Retaining pin lever advancement mechanism for a curved cutter stapler |
| US7147139B2 (en) * | 2003-12-30 | 2006-12-12 | Ethicon Endo-Surgery, Inc | Closure plate lockout for a curved cutter stapler |
-
2005
- 2005-08-05 US US11/197,520 patent/US7641092B2/en active Active
-
2006
- 2006-07-13 AU AU2006203003A patent/AU2006203003B2/en not_active Ceased
- 2006-08-04 SI SI200630297T patent/SI1749486T2/sl unknown
- 2006-08-04 AT AT06254107T patent/ATE424148T1/de active
- 2006-08-04 PL PL06254107T patent/PL1749486T5/pl unknown
- 2006-08-04 CA CA2555551A patent/CA2555551C/en not_active Expired - Fee Related
- 2006-08-04 ES ES06254107T patent/ES2322394T5/es active Active
- 2006-08-04 DK DK06254107.3T patent/DK1749486T4/da active
- 2006-08-04 DE DE602006005430T patent/DE602006005430D1/de active Active
- 2006-08-04 JP JP2006213623A patent/JP5063951B2/ja active Active
- 2006-08-04 MX MXPA06008889A patent/MXPA06008889A/es active IP Right Grant
- 2006-08-04 CN CN2006101087756A patent/CN101006934B/zh active Active
- 2006-08-04 EP EP06254107A patent/EP1749486B2/en active Active
- 2006-08-04 PT PT06254107T patent/PT1749486E/pt unknown
- 2006-08-07 BR BRPI0603186A patent/BRPI0603186B8/pt active IP Right Grant
-
2009
- 2009-05-22 CY CY20091100551T patent/CY1109086T1/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK1749486T3 (da) | 2009-06-08 |
| CA2555551A1 (en) | 2007-02-05 |
| CY1109086T1 (el) | 2014-07-02 |
| CN101006934A (zh) | 2007-08-01 |
| JP2007044518A (ja) | 2007-02-22 |
| EP1749486A1 (en) | 2007-02-07 |
| AU2006203003B2 (en) | 2012-09-20 |
| CA2555551C (en) | 2014-04-08 |
| ATE424148T1 (de) | 2009-03-15 |
| SI1749486T2 (sl) | 2013-04-30 |
| BRPI0603186B1 (pt) | 2018-06-26 |
| BRPI0603186B8 (pt) | 2021-06-22 |
| BRPI0603186A (pt) | 2007-03-20 |
| EP1749486B2 (en) | 2012-12-12 |
| CN101006934B (zh) | 2010-12-01 |
| MXPA06008889A (es) | 2007-02-16 |
| PL1749486T3 (pl) | 2009-08-31 |
| SI1749486T1 (sl) | 2009-08-31 |
| JP5063951B2 (ja) | 2012-10-31 |
| US7641092B2 (en) | 2010-01-05 |
| DK1749486T4 (da) | 2013-02-18 |
| DE602006005430D1 (de) | 2009-04-16 |
| EP1749486B1 (en) | 2009-03-04 |
| US20070029364A1 (en) | 2007-02-08 |
| AU2006203003A1 (en) | 2007-02-22 |
| PL1749486T5 (pl) | 2013-05-31 |
| PT1749486E (pt) | 2009-05-29 |
| ES2322394T5 (es) | 2013-03-19 |
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