ES2947710T3 - Grapas quirúrgicas con parte posterior expandible - Google Patents
Grapas quirúrgicas con parte posterior expandibleInfo
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- ES2947710T3 ES2947710T3 ES18205075T ES18205075T ES2947710T3 ES 2947710 T3 ES2947710 T3 ES 2947710T3 ES 18205075 T ES18205075 T ES 18205075T ES 18205075 T ES18205075 T ES 18205075T ES 2947710 T3 ES2947710 T3 ES 2947710T3
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- A61B17/0644—Surgical staples, i.e. penetrating the tissue penetrating the tissue, deformable to closed position
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- 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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- A61B2017/00398—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids
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- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
- A61B2017/00473—Distal part, e.g. tip or head
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- 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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- 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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- 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
Una grapa quirúrgica incluye un cuerpo que incluye una primera pata, una segunda pata y un tramo posterior. El tramo posterior tiene una primera porción, una segunda porción, una tercera porción y una región ondulada. La primera parte del tramo posterior incluye un elemento en bucle. La segunda porción del tramo posterior se extiende entre una primera porción de extremo de la primera pata y una primera porción de extremo del elemento en bucle. La tercera porción del tramo posterior se extiende entre una primera porción de extremo de la segunda pata y una segunda porción de extremo del elemento en bucle. La región ondulada incluye una sección ondulada en al menos una de la segunda parte o la tercera parte del tramo posterior. El grosor combinado del alambre de las porciones segunda y tercera del tramo posterior en la región plegada es aproximadamente igual al diámetro del cuerpo de la grapa quirúrgica. (Traducción automática con Google Translate, sin valor legal)
Description
DESCRIPCIÓN
Grapas quirúrgicas con parte posterior expandible
REFERENCIA CRUZADA A LA SOLICITUD RELACIONADA
Esta solicitud es una continuación parcial de la Solicitud de Patente de EE. UU. n.° 15/587.747 presentada el 5 de mayo de 2017.
ANTECEDENTES
1. Campo técnico
La presente descripción se refiere a grapas quirúrgicas para uso con instrumentos de grapado quirúrgico. Más particularmente, la presente divulgación se refiere a grapas quirúrgicas para uso con instrumentos de grapado quirúrgico para unir tejido de espesores variables.
2. Antecedentes de la técnica relacionada
Las grapas quirúrgicas se aplican al tejido utilizando instrumentos de grapado quirúrgico para unir tejido o segmentos de tejido de una manera rápida y eficaz en una variedad de procedimientos quirúrgicos, por ejemplo, procedimientos de anastomosis.
Por lo general, una grapa quirúrgica incluye una parte posterior y un par de patas separadas. Las patas se introducen a través del tejido y en un conjunto de yunque de un instrumento de grapado quirúrgico para deformar la grapa en una configuración deseada, p. ej., una grapa B, para efectuar la hemostasia. Las grapas quirúrgicas actuales tienen un tamaño particular y son adecuadas para tejido con un intervalo de grosor determinado para efectuar la hemostasia. Como tal, un médico debe elegir una grapa que tenga un tamaño apropiado para un intervalo de grosor de tejido determinado para garantizar una hemostasia eficaz. Si el médico identifica erróneamente el grosor del tejido o si el grosor del tejido cae cerca de los bordes exteriores del intervalo para un tamaño de grapa determinado, aumenta la probabilidad de una hemostasia ineficaz.
En consecuencia, existe una necesidad continua en las técnicas de sutura de una grapa quirúrgica que sea capaz de adaptarse a un mayor intervalo de espesores de tejido para proporcionar al médico una mayor flexibilidad a la hora de llevar a cabo diversos procedimientos quirúrgicos.
El documento US 2008/172088 A1 se refiere a una grapa capaz de aplicar una fuerza de carga contra el material que se está grapando, y a mejoras en los procesos para grapar material.
SUMARIO
La presente divulgación proporciona, en un aspecto, una grapa quirúrgica que incluye un cuerpo que tiene un diámetro y que incluye una primera pata, una segunda pata y una parte posterior. Cada una de la primera y segunda patas tiene una primera parte de extremo y una segunda parte de extremo. La parte posterior tiene una primera parte, una segunda parte, una tercera parte y una región rizada. La primera parte de la parte posterior incluye un miembro en bucle que tiene una primera parte de extremo y una segunda parte de extremo. La segunda parte de la parte posterior se extiende entre la primera parte de extremo de la primera pata y la primera parte de extremo del miembro en bucle. La tercera parte de la parte posterior se extiende entre la primera parte de extremo de la segunda pata y la segunda parte de extremo del miembro en bucle. La región rizada incluye una sección rizada definida en al menos una de la segunda parte o la tercera parte de la parte posterior. El grosor de alambre combinado de la segunda y tercera partes de la parte posterior, en la región rizada, es aproximadamente igual al diámetro del cuerpo de la grapa quirúrgica.
De acuerdo con la invención, la región rizada de la parte posterior incluye una primera sección rizada, definida en la segunda parte de la parte posterior, y una segunda sección rizada definida en la tercera parte de la parte posterior. En tales realizaciones, el grosor de alambre combinado de la región rizada es aproximadamente igual al diámetro del cuerpo de la grapa quirúrgica.
De acuerdo con la invención, la primera sección rizada de la segunda parte de la parte posterior se solapa con la segunda sección rizada de la tercera parte de la parte posterior.
En ciertos ejemplos, la primera sección rizada de la segunda parte de la parte posterior está alineada axialmente con la segunda sección rizada de la tercera parte de la parte posterior.
En algunos ejemplos, el miembro en bucle de la parte posterior define un primer eje que se extiende entre la primera parte de extremo del miembro en bucle y la segunda parte de extremo del miembro en bucle.
En determinados ejemplos, la segunda parte de la parte posterior define un segundo eje y la ter (cera parte de la parte posterior define un tercer eje. En tales realizaciones, el primer eje del miembro en bucle es paralelo al segundo eje de la segunda parte y al tercer eje de la tercera parte.
En algunos ejemplos, el segundo eje de la segunda parte de la parte posterior está alineado lateralmente con el tercer eje de la tercera parte de la parte posterior de manera que la primera pata y la segunda pata de la grapa quirúrgica están alineadas axialmente.
En determinados ejemplos, el miembro en bucle de la parte posterior incluye un vértice, la segunda parte de la parte posterior incluye una primera parte intermedia y la tercera parte de la parte posterior incluye una segunda parte intermedia. En tales ejemplos, el vértice del miembro en bucle y la primera y segunda partes intermedias de la segunda y tercera partes de la parte posterior definen un eje que es perpendicular al segundo eje de la segunda parte de la parte posterior y al tercer eje de la tercera parte de la parte posterior.
En algunos ejemplos, la grapa quirúrgica incluye una configuración no conformada y una configuración conformada. En la configuración no conformada de la grapa quirúrgica, el vértice del miembro en bucle de la parte posterior está separado de cada una de la segunda y tercera partes de la parte posterior una primera distancia. En la configuración conformada de la grapa quirúrgica, el vértice del miembro en bucle de la parte posterior está separado de cada una de la segunda y tercera partes de la parte posterior una segunda distancia, que es menor que la primera distancia. En algunos ejemplos, la parte posterior de la grapa quirúrgica se posiciona para enganchar el tejido de tal manera que la segunda distancia entre el vértice del miembro en bucle de la parte posterior y cada una de la segunda y tercera partes de la parte posterior disminuya a medida que aumenta el grosor del tejido enganchado por la parte posterior. En ciertos ejemplos, en la configuración conformada de la grapa quirúrgica, la primera pata de la grapa quirúrgica se posiciona en un primer lateral del miembro en bucle y la segunda pata de la grapa quirúrgica se posiciona en un segundo lateral del miembro en bucle, opuesto al primer lateral del miembro en bucle.
La presente divulgación proporciona en otro aspecto una grapa quirúrgica que incluye un cuerpo que tiene una primera pata, una segunda pata y una parte posterior. Cada una de la primera y segunda patas tiene una primera parte de extremo y una segunda parte de extremo. La parte posterior tiene una primera parte, una segunda parte, una tercera parte y una región rizada. La primera parte de la parte posterior tiene una primera parte de extremo y una segunda parte de extremo. La segunda parte de la parte posterior se extiende longitudinalmente entre la primera parte de extremo de la primera pata y la primera parte de extremo de la primera parte. La segunda parte define un primer eje. La tercera parte de la parte posterior se extiende longitudinalmente entre la primera parte de extremo de la segunda pata y la segunda parte de extremo de la primera parte. La tercera parte define un segundo eje. La región rizada incluye una sección rizada definida en al menos una de la segunda parte o la tercera parte de la parte posterior. La región rizada alinea el primer eje de la segunda parte con el segundo eje de la tercera parte.
En algunos ejemplos, la primera parte incluye un miembro en bucle posicionado entre la primera parte de extremo y la segunda parte de extremo de la primera parte de la parte posterior.
En determinados ejemplos, el miembro en bucle de la primera parte de la parte posterior define un tercer eje que es paralelo al primer eje de la segunda parte de la parte posterior y al segundo eje de la tercera parte de la parte posterior. En algunos ejemplos, en la región rizada, la segunda y tercera partes de la parte posterior incluyen un grosor de alambre combinado que es aproximadamente igual al diámetro del cuerpo de la grapa quirúrgica.
En algunos ejemplos, la sección rizada definida en al menos una de la segunda parte o la tercera parte de la parte posterior alinea axialmente la primera parte de extremo de la primera pata con la primera parte de extremo de la segunda pata.
En ciertos ejemplos, la región rizada de la parte posterior está dispuesta entre la primera parte de extremo de la primera pata y la primera parte de extremo de la segunda pata.
En determinados ejemplos, la segunda parte de la parte posterior y la tercera parte de la parte posterior están en contacto lateral.
BREVE DESCRIPCIÓN DE LOS DIBUJOS
Varios ejemplos de las grapas con parte posterior expandibles y cartuchos para soportar las grapas que se divulgan en el presente documento se han divulgado con referencia a los dibujos, en donde:
La FIG. 1 es una vista en perspectiva de un ejemplo ilustrativo de la grapa quirúrgica divulgada actualmente, que ilustra la grapa quirúrgica en una configuración no conformada;
la FIG. 2 es una vista frontal de la grapa quirúrgica de la FIG. 1;
la FIG. 3 es una vista superior de la grapa quirúrgica de la FIG. 1;
la FIG. 4A es una vista frontal de la grapa quirúrgica de la FIG. 1 en una configuración conformada, enganchando tejido que tiene un primer grosor;
la FIG. 4B es una vista frontal de la grapa quirúrgica de la FIG. 1 en la configuración conformada, enganchando tejido que tiene un segundo grosor mayor;
la FIG. 4C es una vista frontal de la grapa quirúrgica de la FIG. 1 en la configuración conformada, enganchando tejido que tiene un tercer grosor aún mayor;
la FIG. 5 es una vista en perspectiva de un instrumento de grapado quirúrgico que incluye un cartucho que soporta las grapas quirúrgicas de la FIG. 1, con un conjunto de herramienta del instrumento de grapado quirúrgico en una posición libre;
la FIG. 6 es una vista en perspectiva de una unidad de carga del instrumento de grapado quirúrgico de la FIG.
5, con el conjunto de herramienta de la unidad de carga en la posición libre;
la FIG. 7 es una vista en perspectiva del conjunto de herramienta de la FIG. 6 en la posición de sujeción; la FIG. 8 es una vista en despiece de un conjunto de cartucho de grapas de la unidad de carga de la FIG. 6; la FIG. 9 es una vista superior de un cartucho de grapas del conjunto de cartucho de grapas de la FIG. 8; la FIG. 10 es una vista ampliada del área de detalle indicada, delineada como 10 en la FIG. 9;
la FIG. 11 es una vista ampliada del área de detalle indicada, delineada como 11 en la FIG. 8;
la FIG. 12 es una vista en perspectiva lateral de un empujador del conjunto de cartucho de grapas de la FIG.
8;
la FIG. 13 es una vista en perspectiva lateral del empujador de la FIG. 12 con una pluralidad de las grapas quirúrgicas de la FIG. 1 dispuestas sobre el empujador;
la FIG. 14 es una vista superior del empujador de la FIG. 12;
la FIG. 15 es una vista en sección transversal tomada a lo largo de las líneas de sección "15-15" de la FIG.
7, con un tejido que tiene un primer grosor sujeto dentro del conjunto de herramienta de la unidad de carga; y
la FIG. 16 es una vista en sección transversal tomada a lo largo de las líneas de sección "16-16" de la FIG.
7, con un tejido que tiene un segundo grosor sujeto dentro del conjunto de herramienta de la unidad de carga; la FIG. 17A es una vista en perspectiva de una grapa quirúrgica de acuerdo con la presente invención que ilustra la grapa quirúrgica en una configuración no conformada;
la FIG. 17B es una vista superior de la grapa quirúrgica de la FIG. 17A;
la FIG. 17C es una vista inferior de la grapa quirúrgica de la FIG. 17A;
la FIG. 17D es una vista lateral de la grapa quirúrgica de la FIG. 17A;
la FIG. 18 es una vista en perspectiva lateral de un empujador de un conjunto de cartucho de grapas de acuerdo con un aspecto de la presente divulgación, que soporta las grapas quirúrgicas de la FIG. 17A; la FIG. 19A es una vista en perspectiva lateral de un conjunto de cartucho de grapas de acuerdo con otro aspecto de la presente divulgación, que soporta las grapas quirúrgicas de la FIG. 17A; y
la FIG. 19B es una vista en perspectiva lateral de un cartucho de grapas del conjunto de cartucho de grapas de la FIG. 19A.
DESCRIPCIÓN DETALLADA DE REALIZACIONES
A continuación se describirán en detalle ejemplos de la presente grapa quirúrgica divulgada con referencia a los dibujos, en donde los números de referencia similares identifican miembros similares o idénticos. En los dibujos y en la siguiente descripción, el término "proximal" debe entenderse como la parte o extremo del instrumento que está más cerca de un usuario durante el uso adecuado, mientras que el término "distal" debe entenderse como la parte o extremo del instrumento que está más alejado de un usuario durante el uso adecuado, como es tradicional y convencional en la técnica. Además, tal como se usan en la memoria descriptiva, las expresiones "aproximadamente igual", "sustancialmente igual" y "aproximadamente igual" deben entenderse como inclusivas de /- un 15 % de un parámetro determinado.
Haciendo referencia inicialmente a las FIGS. 1-3, se muestra generalmente un ejemplo de la presente divulgación como una grapa quirúrgica 100. La grapa quirúrgica 100 incluye un cuerpo 10 que tiene una parte posterior 12, una primera pata 14 y una segunda pata 16. La grapa quirúrgica 100 tiene una configuración no conformada, como se muestra en las FIGS. 1 a 3, en donde la primera pata 14 y la segunda pata 16 son paralelas o sustancialmente paralelas entre sí y están mutuamente separadas por una distancia. Alternativamente, en la configuración no conformada, la primera y segunda patas 14, 16 pueden divergir ligeramente o converger ligeramente, etc., entre sí.
Cada una de la primera y segunda patas 14, 16 incluye una primera parte 14a, 16a de extremo, respectivamente, y una segunda parte 14b, 16b de extremo, respectivamente. Cada una de las segundas partes 14b, 16b de extremo de la primera y segunda patas 14, 16 incluye una punta 14c, 16c de penetración de tejido. En una realización, cada una de las puntas 14c, 16c de penetración de tejido de la primera y segunda patas 14, 16 respectivas de la grapa quirúrgica 100 puede estar formada con un extremo biselado o ahusado para facilitar la penetración de la primera y segunda patas 14, 16 en un tejido "T" (véanse las FIGS.4A-4C). Alternativamente, las puntas 14c, 16c de penetración de tejido de la primera y segunda patas 14, 16 respectivas de la grapa quirúrgica 100 no tienen que estar biseladas, pueden estar biseladas en una dirección diferente o pueden definir una superficie cónica o plana.
Con referencia continua a las FIGS. 1 -3, la parte posterior 12 incluye una primera parte 12a que tiene un miembro 18 en bucle, una segunda parte 20 que es sustancialmente lineal y se extiende entre la primera parte 14a de extremo de la primera pata 14 y una primera parte 18a de extremo del miembro 18 en bucle, y una tercera parte 22 que es sustancialmente lineal y se extiende entre la primera parte 16a de extremo de la segunda pata 16 y una segunda parte 18b de extremo del miembro 18 en bucle. El miembro 18 en bucle de la parte posterior 12 incluye una parte arqueada 24 que se extiende entre la segunda y la tercera partes 20, 22 de la parte posterior 12. En la configuración no conformada de la grapa quirúrgica 100, la segunda parte 20 de la parte posterior 12 puede ser sustancialmente paralela a la tercera parte 22 de la parte posterior 12 y estar en contacto lateral o estrechamente alineada con la tercera parte 22 de la parte posterior 12, como se ilustra en la FIG. 1.
En algunos ejemplos, la parte arqueada 24 del miembro 18 en bucle se extiende transversalmente entre la segunda parte 20 y la tercera parte 22 de la parte posterior 12. En la configuración no conformada de la grapa quirúrgica 100, la segunda parte 20 de la parte posterior 12 define un eje "X1 -X1" y la tercera parte 22 de la parte posterior 12 define un eje "X2-X2". El eje "X1 -X1" de la segunda parte 20 y el eje "X2-X2" de la tercera parte 22 pueden estar desplazados lateralmente entre sí por una distancia de desplazamiento "OD". Se prevé que la distancia de desplazamiento "OD" entre el eje "X1-X1" de la segunda parte 20 y el eje "X2-X2" de la tercera parte 22 pueda ser sustancialmente igual a un diámetro "BD" del cuerpo 10 de la grapa quirúrgica 100, de modo que la segunda parte 20 y la tercera parte 22 estén situadas muy próximas o en contacto entre sí.
La parte arqueada 24 del miembro 18 en bucle define un eje "X3-X3", que se extiende entre una primera parte 20a de extremo de la segunda parte 20 de la parte posterior 12 y una primera parte 22a de extremo de la tercera parte 22 de extremo de la parte posterior 12. En algunos ejemplos, el miembro 18 en bucle y la segunda y tercera partes 20, 22 pueden definir una abertura cerrada 26 que puede tener una configuración circular u ovalada. Se prevé que la parte arqueada 24 del miembro 18 en bucle de la parte posterior 12 pueda estar formada con cualquier radio de curvatura deseado para que se adapte a una necesidad, procedimiento quirúrgico o intervalo de espesores de tejido particulares (como se analizará más adelante). También se prevé que la abertura 26 definida por la parte posterior 12 no tenga que ser circular u ovalada sino que pueda tener otras configuraciones, tales como p. ej. forma de U, forma trapezoidal, forma rectangular, etc. La parte posterior puede tener otras formas, tales como redonda, rectilínea, etc., y el miembro 18 puede ser recto, curvo o en ángulo. Además, en algunos ejemplos la parte posterior 12 puede incluir más de un miembro 18 en bucle.
El cuerpo 10 de la grapa quirúrgica 100 puede tener una sección transversal circular en toda su longitud. Alternativamente, se prevé que el cuerpo 10 de la grapa quirúrgica 100 pueda tener diversas formas de sección transversal diferentes, incluyendo rectangular, ovalada, cuadrada, triangular, trapezoidal, etc. También se prevé que la parte posterior 12 de la grapa quirúrgica 100 y la primera y segunda patas 14, 16 de la grapa quirúrgica 100 puedan tener diferentes formas de sección transversal. En un ejemplo, la parte posterior 12 de la grapa quirúrgica 100 puede tener una forma de sección transversal rectangular y la primera y segunda patas 14, 16 de la grapa quirúrgica 100 pueden tener una forma de sección transversal ovalada.
La grapa quirúrgica 100 puede fabricarse a partir de un material conformable, tal como p. ej., titanio, acero inoxidable o diversos polímeros biocompatibles diferentes. De esta manera, la grapa quirúrgica 100 puede introducirse sobre el
tejido mientras está en una configuración no conformada, y a continuación deformarse o sujetarse sobre el tejido para asegurar la grapa quirúrgica 100 al mismo. Se contempla que la grapa quirúrgica 100 pueda fabricarse a partir de cualquier material biocompatible no degradable conocido por los expertos en la técnica.
Con referencia ahora a las FIGS.4A-4C, en algunos ejemplos, la primera y segunda patas 14, 16 de la grapa quirúrgica 100 se deforman contra un conjunto 1400 de yunque (véase la FIG. 5) de un instrumento 1000 de grapado quirúrgico para adoptar una configuración de grapa sustancialmente en forma de B. Dado que la primera y segunda patas 14, 16 de la grapa quirúrgica 100 se extienden desde la segunda y tercera partes 20, 22 de la parte posterior 12, respectivamente, y el eje "X1-X1" de la segunda parte 20 y el eje "X2- X2" de la tercera parte 22 están desplazados lateralmente entre sí por la distancia de desplazamiento "OD", que es sustancialmente igual al diámetro "BD" del cuerpo 10 de la grapa quirúrgica 100, se prevé que, en la configuración conformada de la grapa quirúrgica 100, la primera pata 14 de la grapa quirúrgica 100 se posicione en un primer lateral 24a de la parte arqueada 24 del miembro 18 en bucle y la segunda pata 16 se posicione en un segundo lateral 24b opuesto de la parte arqueada 24 del miembro 18 en bucle (véanse las FiGS. 3, 4A y 4B).
En la configuración conformada, la parte arqueada 24 del miembro 18 en bucle de la parte posterior 12 está configurada para deformarse con respecto a la segunda y tercera partes 20, 22 de la parte posterior 12, en donde la primera y segunda partes transversales 20, 22 del miembro 18 en bucle de la parte posterior 12 permanecen sustancialmente lineales. Específicamente, la deformación de la parte posterior 12 de la grapa quirúrgica 100 depende del grosor, p. ej., "T1", "T2", "T3", etc., del tejido "T" a sujetar. Inicialmente, en la configuración no conformada de la grapa quirúrgica 100, el miembro 18 en bucle de la parte posterior 12 incluye una distancia no comprimida "D1" entre un vértice 24c de la parte arqueada 24 del miembro 18 en bucle y la segunda y tercera partes 20, 22 de la parte posterior 12, como se ilustra en la FIG. 2. En algunos ejemplos, se contempla que el vértice 24c de la parte arqueada 24 y una parte intermedia "M1" (véase la FIG. 1) de la segunda parte 20 de la parte posterior 12 y una parte intermedia "M2" (véase la FIG. 1) de la tercera parte 22 de la parte posterior 12 definan un eje "X4-X4", que es sustancialmente paralelo a al menos una de la primera y segunda patas 14, 16 de la grapa quirúrgica 100 y/o sustancialmente perpendicular al eje "X1 -X1" de la segunda parte 20 de la parte posterior 12 y al eje "X2-X2" de la tercera parte 22 de la parte posterior 12. Al engancharse con el tejido "T", el miembro 18 en bucle de la parte posterior 12 se comprime entre el tejido "T" y el conjunto 1400 de yunque (véase la FIG. 5) de un instrumento 1000 de grapado quirúrgico, de tal manera que el miembro 18 en bucle de la parte posterior 12 define una distancia comprimida "D2" entre el vértice 24c de la parte arqueada 24 del miembro 18 en bucle y la segunda y tercera partes 20, 22 de la parte posterior 12, como se ilustra en las FIGS. 4A-4C. A medida que el miembro 18 en bucle entra en contacto con el tejido "T" situado entre la primera y segunda patas 14 y el miembro 18 en bucle, a medida que se deforman las grapas 100, la distancia "D2" disminuye una cantidad directamente relacionada con el grosor del tejido "T". Más específicamente, a medida que aumenta el grosor del tejido, aumenta la fuerza aplicada sobre el miembro 18 en bucle por el tejido "T" situado entre la primera y segunda patas 14, 16 y el miembro 18 en bucle de las grapas 100, a medida que se deforman las grapas 100, para aumentar la cantidad de deformación del miembro 18 en bucle.
La FIG. 4A ilustra una grapa 100 cuando la grapa 100 se conforma en un tejido "T" relativamente delgado, que tiene un primer grosor "T1". A medida que la grapa 100 se deforma alrededor de un tejido "T" relativamente delgado que tiene un grosor "T1", el tejido "T" se ve comprimido entre la primera y segunda patas 14, 16 y el miembro 18 en bucle de las grapas 100. A medida que la primera y segunda patas 14, 16 de la grapa 100 se deforman para adoptar una configuración B contra el conjunto 1400 de yunque del instrumento 1000 de grapado quirúrgico (FIG. 5), la primera y segunda patas 14, 16 empujan el tejido "T" hacia y contra el miembro 18 en bucle de la parte posterior 12. Debido a que el conjunto 1400 de yunque está dispuesto a una distancia fija del conjunto 1300 de cartucho cuando se dispara el instrumento de grapado (como se describe en detalle a continuación), todo el tejido "T" deberá caber entre la primera y segunda patas 14, 16 y el miembro 18 en bucle de la parte posterior 12. Por lo tanto, cuando el tejido "T" es relativamente delgado, el tejido no aplica fuerza sustancial alguna sobre el miembro 18 en bucle ya que la primera y segunda patas 14, 16 se deforman y el miembro 18 en bucle experimenta poca o ninguna deformación. Por lo tanto, la distancia "D2" entre el vértice 24c de la parte arqueada 24 del miembro 18 en bucle y la segunda y tercera partes 20, 22 de las grapas quirúrgicas 100 permanece sustancialmente inalterada, o solo disminuye ligeramente. Haciendo referencia a la FIG. 4B, donde el tejido "T" tiene un grosor "T2" moderado, el tejido "T" requiere más espacio entre la primera y segunda patas 14, 16 y el miembro 18 en bucle de la parte posterior 12. Por lo tanto, a medida que la primera y segunda patas 14, 16 se deforman contra el conjunto 1400 de yunque y se empuja el tejido "T" hacia el miembro 18 en bucle de la parte posterior 12, se aplica una fuerza mayor sobre el miembro 18 en bucle para causar una mayor deformación en el miembro 18 en bucle de la parte posterior 12. Por lo tanto, la distancia "D2" entre el vértice 24c de la parte arqueada 24 del miembro 18 en bucle y la segunda y tercera partes 20, 22 de la parte posterior 12 de la grapa quirúrgica 100 disminuye moderadamente. De manera similar, donde el tejido "T" tiene un gran espesor "T3" como se muestra en la FIG. 4C, a medida que se deforma la grapa 100 el tejido "T" requiere aún más espacio entre la primera y segunda patas 14, 16 y el miembro 18 en bucle de la parte posterior 12. Por lo tanto, a medida que la primera y segunda patas 14, 16 se deforman contra el conjunto 1400 de yunque y se empuja el tejido "T" hacia el miembro 18 en bucle de la parte posterior 12, se aplica una fuerza aún mayor sobre el miembro 18 en bucle para provocar un mayor deformación del miembro 18 en bucle de la parte posterior 12, para reducir aún más la distancia D2" entre el vértice 24c de la parte arqueada 24 del miembro 18 en bucle y la segunda y tercera partes 20, 22 de la parte posterior 12 de la grapa quirúrgica 100.
Como se ilustra en las FIGS. 4A-4C, se prevé que la parte arqueada 24 del miembro 18 en bucle de la parte posterior 12 se vuelva progresivamente más lineal a medida que aumenta el grosor del tejido "T". La capacidad de la parte posterior 12 de la grapa quirúrgica 100 para deformarse de acuerdo con el grosor relativo del tejido "T" facilita el uso de las grapas actualmente divulgadas en tejido que presente un mayor intervalo de grosores, al tiempo que proporciona una hemostasia eficaz.
Para colocar la grapa quirúrgica 100 actualmente divulgada en el tejido "T", se proporciona un aparato quirúrgico en forma de instrumento 1000 de grapado quirúrgico, como se ilustra en la FIG. 5. El instrumento 1000 de grapado quirúrgico se aproxima y dispara de manera similar y de acuerdo con otros instrumentos de grapado quirúrgico conocidos, p. ej., el instrumento de grapado quirúrgico divulgado en la patente de EE.UU. n.° 8.865.361.
Como se ilustra en la FIG. 5, el instrumento 1000 de grapado quirúrgico generalmente incluye un conjunto 1002 de mango con un mango móvil 1003a y un mango estacionario 1003b, un vástago alargado 1004 que se extiende distalmente desde el conjunto 1002 de mango y una unidad 1008 de carga que está acoplada a una parte distal del vástago alargado 1004. En cualquiera de los ejemplos divulgados en el presente documento, el conjunto de mango puede incluir uno o más motores o estar unido a uno o más motores, o podría configurarse para que funcione con un sistema quirúrgico robótico.
Con referencia a las FIGS. 6-8, la unidad 1008 de carga del instrumento 1000 de grapado quirúrgico incluye un conjunto 1200 de herramienta que tiene un conjunto 1300 de cartucho de grapas que aloja una pluralidad de grapas quirúrgicas 100 (véase la FIG. 8) y un conjunto 1400 de yunque asegurado de forma móvil en relación con el conjunto 1300 de cartucho de grapas, de manera que el conjunto 1200 de herramienta puede moverse entre una configuración abierta (véase la FIG. 6) en la que el conjunto 1300 de cartucho de grapas está separado del conjunto 1400 de yunque, y una configuración de sujeción (véase la FIG. 7) en la que el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque están aproximados. Alternativamente, el conjunto 1300 de cartucho se puede soportar de forma móvil en relación con el conjunto 1400 de yunque.
Volviendo ahora a la FIG. 8, el conjunto 1300 de cartucho de grapas incluye un transportador 1310 que tiene un canal alargado 1312 de soporte. El canal alargado 1312 de soporte está dimensionado y configurado para recibir un cartucho 1314 de grapas. El conjunto 1300 de cartucho de grapas incluye un par de miembros elásticos o resilientes 1316a, 1316b, que están configurados y dimensionados para aplicar y mantener una fuerza de compresión constante sobre el tejido "T" situado entre el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque (véanse las FIGS. 15 y 16) del conjunto 1200 de herramienta. En algunos ejemplos, el par de miembros elásticos o resilientes 1316a, 1316b pueden configurarse como dos miembros alargados sustancialmente paralelos que se posicionan entre el cartucho 1314 de grapas y un par de rebordes 1318a, 1318b formados en el soporte 1310, respectivamente. El par de miembros elásticos 1316a, 1316b se pueden unir o disponer de otro modo sobre el par de rebordes 1318a, 1318b del soporte 1310, y en ejemplos alternativos se pueden unir de forma fija o liberable a los mismos. El par de miembros elásticos 1316a, 1316b están configurados para comprimirse para acomodar tejidos de diferentes grosores entre el conjunto 1300 de cartucho y el conjunto 1400 de yunque. Para una descripción más detallada de la construcción y operación de un ejemplo del par de miembros elásticos 1316a, 1316b, se puede hacer referencia a la Patente de EE.UU. n.° 8,152,041.
El cartucho 1314 de grapas del conjunto 1300 de cartucho de grapas incluye una pluralidad de receptáculos 1320 de grapas, que están dispuestos en filas. La pluralidad de receptáculos 1320 de grapas están dimensionados para recibir la pluralidad de grapas quirúrgicas 100 y una pluralidad de empujadores 1322, como se detallará a continuación. El conjunto 1300 de cartucho de grapas incluye una corredera 1324 de accionamiento sostenida de manera móvil dentro del canal alargado 1312 de soporte del transportador 1310. Durante la operación, la corredera 1324 de accionamiento está configurada para avanzar a lo largo del canal alargado 1312 de soporte del transportador 1310 para contactar secuencialmente con la pluralidad de empujadores 1322, de modo que la pluralidad de empujadores 1322 se desplacen por dentro de la pluralidad de receptáculos 1320 de grapas para expulsar la pluralidad de grapas quirúrgicas 100 desde la pluralidad de receptáculos 1320 de grapas hacia el conjunto 1400 de yunque.
Como se ha detallado anteriormente con referencia a las FIGS. 1-4C, el eje "X1 -X1" de la segunda parte 20 de la parte posterior 12 y el eje "X2-X2" de la tercera parte 22 de la parte posterior 12" están desplazados lateralmente entre sí por la distancia de desplazamiento "OD". Para compensar el desplazamiento lateral en la orientación de la parte posterior 12 de la grapa quirúrgica 100 y garantizar que la primera y segunda patas 14, 16 de cada una de la pluralidad de grapas quirúrgicas 100 queden alineadas longitudinalmente con respecto a la otra pluralidad de grapas quirúrgicas 100, en una correspondiente fila de grapas quirúrgicas 100, la pluralidad de receptáculos 1320 de grapas del cartucho 1314 de grapas y una pluralidad de asientos 1326 de grapas de la pluralidad de empujadores 1322 están dimensionados y conformados como se detalla a continuación.
Específicamente, con referencia a las FIGS. 9-11, cada uno de la pluralidad de receptáculos 1320 de grapas del cartucho 1314 de grapas incluye un contorno "C" que corresponde a la orientación de la grapa quirúrgica 100, como se muestra en la FIG. 3 en la vista superior de la grapa quirúrgica 100. El contorno "C" del receptáculo 1320 de grapas del cartucho 1314 de grapas incluye una primera parte "C1" que tiene la forma y las dimensiones adecuadas para recibir la primera pata 14 de la grapa quirúrgica 100, una segunda parte "C2" que tiene la forma y las dimensiones
adecuadas para recibir la segunda pata 16 de la grapa quirúrgica 100, y una parte intermedia "C3" situada entre la primera parte "C1" y la segunda parte "C2" que tiene la forma y las dimensiones adecuadas para recibir la parte posterior 12 de la grapa quirúrgica 100. La pluralidad de receptáculos 1320 de grapas del cartucho 1314 de grapas están posicionados oblicuamente con respecto a un eje longitudinal "A-A" del cartucho 1314 de grapas, de tal manera que la primera y segunda patas 14, 16 de cada una de la pluralidad de grapas quirúrgicas 100 estén alineadas longitudinalmente con respecto a la otra pluralidad de grapas quirúrgicas 100 en la correspondiente fila de grapas quirúrgicas 100.
Con referencia a las FIGS. 12-14, cada uno de la pluralidad de asientos 1326 de grapas de la pluralidad de empujadores 1322 está adaptado para recibir de forma liberable la parte posterior 12 de la grapa quirúrgica 100. El asiento 1326 de grapas del empujador 1322 está posicionado oblicuamente con respecto a un eje longitudinal "B-B" del empujador 1322, como se ilustra en la FIG. 14. Se prevé que la configuración sesgada del asiento 1326 de grapas del empujador 1322 esté adaptada para alinear la grapa quirúrgica 100 con el receptáculo 1320 de grapas (posicionado de forma oblicua) del cartucho 1314 de grapas, a medida que la grapa quirúrgica 100 es expulsada a través del receptáculo 1320 de grapas hacia el conjunto 1400 de yunque, como se ilustra en las FIGS. 10, 15 y 16. Específicamente, el asiento 1326 de grapas del empujador 1322 incluye una primera pared 1326a, que sobresale desde una primera parte 1326b del asiento 1326 de grapas y hacia el receptáculo 1320 de grapas del cartucho 1314 de grapas, y una segunda pared 1326c, que sobresale desde una segunda parte 1326d del asiento 1326 de grapas y hacia el receptáculo 1320 de grapas del cartucho 1314 de grapas. La primera y segunda paredes 1326a, 1326c del asiento 1326 de grapas del empujador 1322 definen un canal sesgado 1328 que se extiende entre la primera y segunda partes 1326b, 1326d del asiento 1326 de grapas del empujador 1322. El canal sesgado 1328 del asiento 1326 de grapas está posicionado sesgadamente con respecto al eje longitudinal "B-B" del empujador 1322.
Cuando la grapa quirúrgica 100 está ubicada en el asiento 1326 de grapa del empujador 1322, la primera pared 1326a del asiento 1326 de grapa está configurada para enganchar con la segunda parte 20 de la parte posterior 12, y la segunda pared 1326b del asiento 1326 de grapa está configurada para enganchar con la tercera parte 22 de la parte posterior 12 para recibir de forma liberable la parte posterior 12 de la grapa quirúrgica 100. Dado que el canal sesgado 1328 del asiento 1326 de grapa está posicionado de forma oblicua con respecto al eje longitudinal "B-B" del empujador 1322, se prevé que, cuando la grapa quirúrgica 100 esté ubicada en el asiento 1326 de grapa del empujador 1322, la grapa quirúrgica 100 esté posicionada oblicuamente con respecto al eje longitudinal "B-B" del empujador 1322, como se ilustra en las FIGS. 13 y 14.
Volviendo ahora a las FIGS. 8, 9, 15 y 16, en algunos ejemplos la pluralidad de receptáculos 1320 de grapas están dispuestos en filas en los laterales de una ranura 1330 para cuchilla, que se extiende a través del cartucho 1314 de grapas del conjunto 1300 de cartucho de grapas. La ranura 1330 para cuchilla está configurada para acomodar el movimiento de una cuchilla 1332 u otro miembro de corte similar para cortar el tejido "T" (véanse las FIGS. 4A-4C) dispuesto entre el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque. En algunos ejemplos, la ranura 1330 para cuchilla puede extenderse a lo largo de una línea central "CL" del cartucho 314 de grapas del conjunto 1300 de cartucho de grapas, como se ilustra en la FIG. 8. Alternativamente, la ranura 1330 para cuchilla puede estar desplazada lateralmente con respecto a la línea central "CL" del cartucho 1314 de grapas del conjunto 1300 de cartucho de grapas.
Con referencia a las FIGS. 15 y 16, el conjunto 1400 de yunque incluye una correspondiente ranura 1402 para cuchilla en una superficie 1404 orientada hacia el tejido del conjunto 1400 de yunque, que está configurada para acomodar el movimiento de la cuchilla 1332. En algunos ejemplos, la cuchilla 1332 incluye una configuración de viga en I de manera que la parte superior 1332a de la cuchilla 1332 está dispuesta de forma móvil dentro de la ranura 1402 para cuchilla del conjunto 1400 de yunque, y la parte inferior 1332b de la cuchilla 1332 está dispuesta de forma móvil dentro de la ranura 1330 para cuchilla del cartucho 1314 de grapas del conjunto 1300 de cartucho de grapas. En cualquiera de los ejemplos divulgados en el presente documento, la cuchilla puede tener otras formas, o podría ser parte de la corredera o estar unida a la misma.
Continuando con referencia a las FIGS. 15 y 16, la cuchilla 1332 incluye una altura "H". Cuando el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque se aproximan y la cuchilla 1332 se traslada a través de las respectivas ranuras 1330, 1402 para cuchilla, la altura "H" de la cuchilla 1332 proporciona una distancia constante "D3" entre el conjunto 1400 de yunque y cada uno de la pluralidad de asientos 1326 de grapas de la pluralidad de empujadores 1322, independientemente del grosor del tejido "T" (véanse las FIGS. 4A-4C) dispuesto entre el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque e independientemente del posicionamiento del cartucho 1314 de grapas. La altura "H" de la cuchilla 1332 también proporciona un espacio máximo para tejido cuando la cuchilla 1332 se traslada a través de las respectivas ranuras 1330, 1402 para cuchilla.
Con referencia ahora a las FIGS. 5-16, en funcionamiento, el instrumento 1000 de grapado quirúrgico se manipula de tal manera que el tejido "T" quede dispuesto entre el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque, con el conjunto 1200 de herramienta separado en la configuración abierta (véase la FIG. 6). A continuación, se aproximan el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque accionando el mango móvil 1003A del conjunto 1002 de mango para sujetar el tejido "T" dispuesto entre el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque, de modo que se aplique una fuerza de compresión sobre el tejido "T".
Con el tejido "T" sujeto de forma segura entre el conjunto 1300 de cartucho de grapas y el conjunto 1400 de yunque, accionando el mango móvil 1003A se dispara el instrumento 1000 de grapado quirúrgico para expulsar la pluralidad de grapas quirúrgicas 100. Al disparar el instrumento 1000 de grapado quirúrgico, la corredera 1324 de accionamiento (FIG. 8) avanza a lo largo del canal alargado 1312 de soporte del transportador 1310 para contactar secuencialmente con la pluralidad de empujadores 1322, de manera que la pluralidad de empujadores 1322 se desplazan por dentro de la pluralidad de receptáculos 1320 de grapas para expulsar la pluralidad de grapas quirúrgicas 100 desde la pluralidad de receptáculos 1320 de grapas hacia el conjunto 1400 de yunque.
La pluralidad de grapas quirúrgicas 100 pasa a través de la pluralidad de receptáculos 1320 de grapas del cartucho 1314 de grapas (véase la FIG. 8) y a través del tejido "T". Después de pasar a través del tejido "T", la pluralidad de grapas quirúrgicas 100 enganchan con la superficie 1404 orientada hacia el tejido del conjunto 1400 de yunque y se deforman sustancialmente para adoptar una configuración de grapa en B (véanse las FIGS. 4A-4C). Tras la conformación dentro del tejido "T", la pluralidad de grapas quirúrgicas 100 mantienen una fuerza de compresión sobre el tejido "T" para efectuar la hemostasia.
El disparo secuencial de las grapas quirúrgicas 100 continúa hasta que la corredera 1324 de accionamiento avanza hasta un extremo distal del cartucho 1314 de grapas, momento en el que se habrán expulsado todas las grapas quirúrgicas 100 alojadas en el cartucho 1314 de grapas. A continuación, puede trasladarse la cuchilla 1332 a través del conjunto 1200 de herramienta para formar una incisión entre las filas de tejido "T" grapado.
Volviendo ahora a las FIGS. 17A-17D, se muestra generalmente como grapa quirúrgica 200 una realización ilustrativa de una grapa quirúrgica de acuerdo con la presente invención. La grapa quirúrgica 200 es sustancialmente similar a la grapa quirúrgica 100 divulgada anteriormente (véanse las FIGS. 1-4C) y, por lo tanto, se describirá solo en la medida necesaria para resaltar las diferencias.
Como se muestra en la FIG. 17A, la grapa quirúrgica 200 incluye un cuerpo 210 que tiene una parte posterior 212, una primera pata 214 y una segunda pata 216. Cada una de la primera y segunda patas 214, 216 incluye una primera parte 214a, 216a de extremo, respectivamente, y una segunda parte 214b, 216b de extremo, respectivamente. Cada una de las segundas partes 214b, 216b de extremo de la primera y segunda patas 214, 216 incluye una punta 214c, 216c de penetración de tejido. La grapa quirúrgica 200 tiene una configuración no conformada, como se muestra en la FIG. 17A, en donde la primera pata 214 y la segunda pata 216 son paralelas o sustancialmente paralelas entre sí y están mutuamente separadas por una distancia. Alternativamente, en la configuración no conformada, la primera y segunda patas 214, 216 pueden divergir ligeramente o converger ligeramente, etc., entre sí.
La parte posterior 212 incluye una primera parte 212a que incluye un miembro 218 en bucle, una segunda parte 212b que es sustancialmente lineal y se extiende entre la primera parte 214a de extremo de la primera pata 214 y una primera parte 218a de extremo del miembro 218 en bucle, y una tercera parte 212c que es sustancialmente lineal y se extiende entre la primera parte 216a de extremo de la segunda pata 216 y una segunda parte 218b de extremo del miembro 218 en bucle.
Con referencia a las FIGS. 17A y 17C, de acuerdo con la invención, la segunda y tercera partes 212b, 212c de la parte posterior 212 definen una región rizada 220 dispuesta entre la primera parte 214a de extremo de la primera pata 214 y la primera parte 216a de extremo de la segunda pata 216. De acuerdo con la invención, la región rizada 220 incluye una primera sección rizada 220a formada en la segunda parte 212b de la parte posterior 212 y una segunda sección rizada 220b formada en la tercera parte 212c de la parte posterior 212. De acuerdo con la invención, la primera sección rizada 220a se solapa con la segunda sección rizada. En un ejemplo alternativo, la primera sección rizada 220a está alineada axialmente con la segunda sección rizada 220b. Alternativamente, se contempla que la región rizada 220 pueda estar definida por una sección rizada solo en una de la segunda y tercera partes 212b, 212c de la parte posterior 212. En la región rizada 220, la segunda parte 212b y/o la tercera parte 212c de la parte posterior 212 están aplanadas de tal manera que el grosor de alambre "WT" combinado de la primera y segundas secciones rizadas 220a, 220b de la parte posterior 212 sea aproximadamente igual a un diámetro "BD2" del cuerpo 210 de la grapa quirúrgica 200. En algunas realizaciones, la región rizada 220 de la parte posterior 212 se puede formar comprimiendo la grapa quirúrgica 200 entre dos superficies sustancialmente planas mediante cualquier medio adecuado.
Con referencia adicional a la FIG. 17B, la formación de la región rizada 220 en la grapa quirúrgica 200 alinea un eje "X5-X5" de la segunda parte 212b con un eje "X6-X6" de la tercera parte 212c. Además, al formar la región rizada 220 en la grapa quirúrgica 200 se alinea un eje "X7-X7" de la primera parte 212a con el eje "X5-X5", y el eje "X6-X6" de la segunda y tercera partes 212b, 212c de la parte posterior 212, respectivamente. Como resultado, la primera pata 214 de la grapa quirúrgica 200 se alinea axialmente con la segunda pata 216 de la grapa quirúrgica 200 de manera que la grapa quirúrgica 200 tendrá un perfil delgado, como se muestra en la FIG. 17D.
En algunas realizaciones, la grapa quirúrgica 200 se puede usar con un instrumento de grapado quirúrgico conocido, tal como p. ej., el instrumento de grapado quirúrgico divulgado en la patente de EE. UU. n.° 5.865.361. Con referencia a la FIG. 18, el instrumento de grapado quirúrgico divulgado en la patente '361 puede incluir empujadores convencionales, tales como p. ej., una pluralidad de empujadores 2322. En contraste con la configuración sesgada de
la pluralidad de empujadores 1322 descritos anteriormente (véase la FIG. 13), cada uno de la pluralidad de empujadores 2322 incluye unos asientos 2326 de grapas que son lineales y están configurados para soportar la región rizada 220 de una respectiva grapa quirúrgica 200. El perfil delgado de la grapa quirúrgica 200 (véase la FIG. 17D) también permite recibir la grapa quirúrgica 200 a través de las ranuras de retención convencionales de un cartucho de grapas, como se divulga en la patente '361. Por lo tanto, se contempla que la grapa quirúrgica 200 pueda usarse de manera intercambiable con una grapa quirúrgica convencional sin que sea necesario modificar la pluralidad de empujadores 2322 o el cartucho de grapas, como se divulga en la patente '361.
Con referencia también a las FIGS. 4A-4C, como se ha analizado anteriormente con respecto a la grapa quirúrgica 100, la grapa quirúrgica 200 puede posicionarse adyacente al tejido "T" mientras está en una configuración no conformada, y a continuación deformarse o sujetarse sobre el tejido de tal manera que la grapa quirúrgica 200 defina, en una configuración conformada, una configuración de grapa sustancialmente en forma de B. Para posicionar la grapa quirúrgica 200 en el tejido "T", se puede utilizar un aparato quirúrgico similar al instrumento 1000 de grapado quirúrgico (véase la FIG. 5) descrito anteriormente y el instrumento de grapado quirúrgico divulgado en la patente '361.
Con referencia a las FIGS. 19A y 19B, el perfil delgado (véase la FIG. 17D) de la grapa quirúrgica 200 también permite disponer una pluralidad de grapas quirúrgicas 200 en una orientación apilada, y usar las mismas con un conjunto 3000 de cartucho similar al conjunto de cartucho de grapas cargado in situ que se divulga en la Patente de Ee .UU. n.° 9.364.217.
El conjunto 3000 de cartucho generalmente incluye un primer cartucho 3020 de grapas, un segundo cartucho 3040 de grapas y una pluralidad de receptáculos 3060 de grapas asociados con cada uno del primer y segundo cartuchos 3020, 3040 de grapas. Aunque en la FIG. 19B solo se ilustra el primer cartucho 3020 de grapas, cada uno del primer y segundo cartuchos 3020, 3040 de grapas incluye una pluralidad de cargadores 3070 de grapas y una pluralidad de empujadores 3080, asociados operativamente con la pluralidad de receptáculos 3060 de grapas. Cada uno de la pluralidad de cargadores 3070 de grapas está configurado para recibir la pluralidad de grapas quirúrgicas 200 de manera que la pluralidad de grapas quirúrgicas 200 queden dispuestas en la misma en la orientación apilada. Una vez que la pluralidad de grapas quirúrgicas 200 se ha cargado en la pluralidad de cargadores 3070 de grapas, la pluralidad de empujadores 3080 están configurados para impulsar la pluralidad de grapas quirúrgicas 200 a través de la pluralidad de receptáculos 3060 de grapas, como se divulga en la patente '217. Se contempla que la pluralidad de grapas quirúrgicas 200 pueda usarse de forma intercambiable con una pluralidad de grapas convencionales como se divulga en la patente '217 sin que sea necesario modificar el conjunto 3000 de cartucho.
En cualquiera de los ejemplos divulgados en el presente documento, el conjunto de herramienta se puede incorporar con la parte alargada del conjunto de mango. El cartucho de grapas puede ser un conjunto extraíble y reemplazable, en un instrumento con una unidad de carga reemplazable o un conjunto de herramienta o un conjunto de herramienta incorporado.
Las grapas quirúrgicas descritas en el presente documento se pueden utilizar en una configuración en la que no se deforme la parte posterior. En determinados ejemplos, la parte posterior puede estar configurada para alojar un material u objeto, siendo la parte posterior deformable o no deformable. El material u objeto puede incluir materiales médicamente útiles, tales como una sustancia hemostática o sellante, productos farmacéuticos tales como agentes de quimioterapia, e incluso agentes radiactivos tales como partículas o semillas de braquiterapia. Dichos materiales u objetos pueden disponerse en la abertura formada por el miembro en forma de bucle o incorporarse en una malla, material tejido, trenzado, no tejido, o una sutura, a disponer en el miembro en forma de bucle.
Se entenderá que se pueden efectuar diversas modificaciones a los ejemplos descritos en el presente documento. Por ejemplo, la grapa anteriormente descrita puede estar formada por cualquiera de diversos materiales quirúrgicamente aceptables, incluidos titanio, plásticos, materiales reabsorbibles, etc. Por lo tanto, la descripción anterior no debe interpretarse como limitante, sino simplemente como ejemplos de aspectos preferidos.
Claims (6)
1.Una grapa quirúrgica (100, 200), que comprende:
un cuerpo (10, 210) que tiene un diámetro (BD), incluyendo el cuerpo:
una primera pata (14, 214), que tiene una primera parte (14a, 214a) de extremo y una segunda parte (14b, 214b) de extremo;
una segunda pata (16, 216), que tiene una primera parte (16a, 216a) de extremo y una segunda parte (16b, 216b) de extremo; y
una parte posterior (12, 212), que incluye:
una primera parte (12a, 212a) que tiene un miembro (18, 218) en bucle, incluyendo el miembro en bucle una primera parte (18a, 218a) de extremo y una segunda parte (18b, 218b) de extremo;
una segunda parte (20, 212b) que se extiende entre la primera parte (14a, 214a) de extremo de la primera pata (14, 214) y la primera parte (18a, 218a) de extremo del miembro (18, 218) en bucle;
una tercera parte (22, 212c) que se extiende entre la primera parte (16a, 216a) de extremo de la segunda pata (16, 216) y la segunda parte (18b, 218b) de extremo del miembro (18, 218) en bucle; y
una región rizada (220), que incluye una primera sección rizada (220a) definida en la segunda parte (212b) de la parte posterior (212) y una segunda sección rizada (220b) definida en la tercera parte (212c) de la parte posterior (212), en donde el espesor de alambre (WT) combinado de la segunda y tercera partes (212b, 212c) de la parte posterior (212), en la región rizada (220), es aproximadamente igual al diámetro (BD) del cuerpo (10, 210) de la grapa quirúrgica (100, 200), caracterizada por que la primera sección rizada (220a) de la segunda parte (212b) de la parte posterior (212) se solapa con la segunda sección rizada (220b) de la tercera parte (212c) de la parte posterior (212).
2. La grapa quirúrgica (100, 200) de acuerdo con cualquiera de las reivindicaciones anteriores, en donde el miembro en bucle de la parte posterior define un primer eje que se extiende entre la primera parte de extremo del miembro en bucle y la segunda parte de extremo del miembro en bucle; en donde preferentemente la segunda parte de la parte posterior define un segundo eje y la tercera parte de la parte posterior define un tercer eje, siendo el primer eje del miembro en bucle paralelo al segundo eje de la segunda parte y al tercer eje de la tercera parte; en donde aún preferentemente el segundo eje de la segunda parte de la parte posterior está alineado lateralmente con el tercer eje de la tercera parte de la parte posterior, de manera que la primera pata y la segunda pata de la grapa quirúrgica estén alineadas axialmente.
3. La grapa quirúrgica (100, 200) de acuerdo con la reivindicación 2, en donde el miembro en bucle de la parte posterior incluye un vértice (24), la segunda parte (20) de la parte posterior (12) incluye una primera parte intermedia (M1), y la tercera parte (22) de la parte posterior (12) incluye una segunda parte intermedia (M2), el vértice (24) del miembro (18) en bucle y la primera y segunda partes intermedias (M1, M2) de la segunda y tercera partes de la parte posterior (20, 22) definen un eje, que es perpendicular al eje (X1 -X1) de la segunda parte (20) de la parte posterior (12) y el eje (X2-X2) de la tercera parte (22) de la parte posterior (12).
4. La grapa quirúrgica (100) de acuerdo con la reivindicación 3, en donde la grapa quirúrgica (100) incluye una configuración no conformada y una configuración conformada, en donde, en la configuración no conformada de la grapa quirúrgica (100), el vértice (24) del miembro (18) en bucle de la parte posterior (12) está separado de cada una de la segunda y tercera partes (20, 22) de la parte posterior (12) por una primera distancia, y en donde, en la configuración conformada de la grapa quirúrgica (100), el vértice (24) del miembro (18) en bucle de la parte posterior (12) está separado de cada una de la segunda y tercera partes (20, 22) de la parte posterior (12) por una segunda distancia, menor que la primera distancia.
5. La grapa quirúrgica (100) de acuerdo con la reivindicación 4, en donde la parte posterior (12) de la grapa quirúrgica (100) queda posicionada de manera que enganche con el tejido de manera que la segunda distancia entre el vértice (24) del miembro (18) en bucle de la parte posterior (12) y cada una de la segunda y tercera partes (20, 22) de la parte posterior (12) disminuya a medida que aumente el grosor del tejido enganchado por la parte posterior (12); y/o en donde, en la configuración conformada de la grapa quirúrgica (100), la primera pata (14) de la grapa quirúrgica (100) queda posicionada en un primer lateral (24a) del miembro (18) en bucle y la segunda pata (16) de la grapa quirúrgica (100) queda posicionada en un segundo lateral (24b) del miembro (18) en bucle, opuesto al primer lateral (24a) del miembro (18) en bucle.
6. Un conjunto (1300) de cartucho de grapas que aloja una pluralidad de grapas quirúrgicas (100, 200) de acuerdo con cualquiera de las reivindicaciones anteriores.
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2017
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CA3022047A1 (en) | 2019-05-09 |
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