BRPI0903067A2 - unidade de carregamento descartável para aparelho de grampeamento cirúrgico - Google Patents
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Abstract
A presente invenção refere-se a unidade de carga descartável para fixação operável em um aparelho de grampeamento cirúrgico. A unidade de carga descartável pode ter um transportador que suporta um cartucho de grampos e um conjunto de bigorna que é acoplada de modo móvel no transportador. As várias modalidades podem ainda ter um conjunto de acionamento axial que é configurada para conferir um movimento de fechamento no conjunto de bigorna e também suporta uma lâmina de corte na mesma, O conjunto de acionamento axial é configurado para receber movimentos de disparo e movimentos de retração do aparelho de grampeamento cirúrgico. Várias modalidades têm um conjunto de liberação de bigorna que permite que o conjunto de bigorna seja liberado de uma operação de sujeição na eventualidade de que a lâmina de corte se torne emperrada durante a operação.
Description
Relatório Descritivo da Patente de Invenção para "UNIDADE DECARREGAMENTO DESCARTÁVEL PARA APARELHO DE GRAMPEAMENTO CIRÚRGICO".
CAMPO DA INVENÇÃO
A presente invenção refere-se em geral a instrumentos cirúrgi-cos endoscópicos incluindo, mas não limitado a, aparelhos de grampeamen-to cirúrgicos que têm unidades de carga descartáveis que são capazes deaplicar linhas de grampos no tecido enquanto cortam o tecido entre aquelaslinhas de grampo e, mais particularmente, a aperfeiçoamentos relacionadosa tais unidades de carga descartáveis.
ANTECEDENTES
Instrumentos cirúrgicos endoscópicos são freqüentemente prefe-ridos sobre dispositivos cirúrgicos abertos desde que uma incisão menortende a reduzir o tempo de recuperação pós-operatório e complicações.
Consequentemente, desenvolvimento significante tem se dedicado a umafaixa de instrumentos cirúrgicos endoscópicos que são adequados para co-locação precisa de um efetuador de extremidade distai em um local cirúrgicodesejado através de uma cânula de um trocarte. Estes efetuadores de ex-tremidade distai engatam o tecido em um número de maneiras para obterum efeito diagnóstico ou terapêutico (por exemplo, endocortador, garra, cor-tador, grampeadores, aplicador de grampo, dispositivo de acesso, dispositivode distribuição de terapia de fármaco/gene, e dispositivo de energia usandoultrassom, RF, laser, etc).
Grampeadores cirúrgicos conhecidos incluem um efetuador ter-minai que simultaneamente faz uma incisão longitudinal no tecido e aplicalinhas de grampos em lados opostos da incisão. O efetuador terminal incluium par de elementos de garra cooperando que, se o instrumento é pretendi-do para aplicações endoscópicas ou laparoscópicas, são capazes de passaratravés de uma passagem de cânula. Um dos elementos de garra suportaum cartucho de grampos que tem pelo menos duas fileiras de grampos late-ralmente espaçadas. O outro elemento de garra define uma bigorna tendobolsos formando grampos alinhados com as fileiras de grampos no cartucho.O instrumento inclui comumente uma pluralidade de cunhas alternadas que,quando acionadas distalmente, passam através das aberturas no cartuchode grampos e engatam acionadores suportando os grampos para efetuar odisparo dos grampos na direção da bigorna.
Tipos diferentes de grampeadores cirúrgicos para aplicaçõesendoscópicas são conhecidos. Por exemplo, um tipo de instrumento degrampeamento cirúrgico é configurado para operar com unidades de cargadescartáveis (DLUs) que são construídas para suportar um cartucho degrampos e conjunto de faca nas mesmas. Uma vez que o procedimento estácompleto, a DLU inteira é descartada. Tais instrumentos que são designadospara acomodar o conteúdo da DLU para oferecer a vantagem de uma lâminade faca "nova" para cada disparo do instrumento. Exemplos de tais apare-lhos de grampeamento cirúrgicos e DLUs são descritos na Patente U.S. N°.5.865.361 para Milliman e outros, a descrição da qual é incorporada aqui emsua totalidade.
Aparelhos de grampeamento cirúrgicos anteriores, tais comoaqueles descritos na Patente U.S. N°. 5.865.361, sofrem da incapacidade deser disparados em tecidos mais espessos (por exemplo, tecidos com espes-suras maiores que 3,5 mm) devido às cargas aumentadas aplicadas emseus sistemas de disparo. Tais cargas aumentadas, por exemplo, podemaumentar a probabilidade de que o sistema de disparo falhe quando á lâmi-na está ainda na bigorna e pode portanto exigir que o conjunto de ferramen-ta do mesmo seja cortado do tecido o que pode levar a sérias conseqüên-cias de ferimento para o paciente.
Assim, existe uma necessidade de uma unidade de carga des-cartável que pode ser facilmente aberta na eventualidade da lâmina se tor-nar emperrada na medida em que é acionada através do tecido que estápreso na unidade.
SUMÁRIO
Em um aspecto geral de várias modalidades da presente inven-ção é fornecida uma unidade de carga descartável para fixação em um apa-relho de grampeamento cirúrgico. A unidade de carga descartável podecompreender um cartucho de grampos que é suportado em um transporta-dor que é acoplável de modo operável no aparelho de grampeamento cirúr-gico. Um conjunto de bigorna pode ser acoplado de modo móvel no trans-portador para deslocamento móvel seletivo entre as posições aberta e fe-chada com relação ao cartucho de grampos. A unidade de carga descartávelpode ainda compreender um conjunto de acionamento axial que tem umaparte de extremidade distai que é construída para mover em uma direçãodistai através de uma fenda no cartucho de grampos em resposta a um mo-vimento de acionamento conferido ao conjunto de acionamento axial a partirdo aparelho de grampeamento cirúrgico e também mover em uma direçãoproximal através da fenda no cartucho de grampos em resposta a um movi-mento de retração aplicado ao conjunto de acionamento axial do aparelho degrampeamento cirúrgico. A parte de extremidade distai do conjunto de acio-namento axial pode ser configurada para conferir uma força de fechamentono conjunto de bigorna na medida em que o conjunto de acionamento axial éacionada na direção distai na fenda no cartucho de grampos. A unidade decarga descartável pode ainda incluir um conjunto de liberação de bigornaque coopera de modo operável com a parte de extremidade distai do conjun-to de acionamento axial e o conjunto de bigorna para fazer seletivamente aparte de extremidade distai do conjunto de acionamento axial descontinuar,conferindo a força de fechamento no conjunto de bigorna independente deonde a parte de extremidade distai do conjunto de acionamento axial estálocalizada dentro da fenda no cartucho de grampos.
Em ainda outro aspecto geral das várias modalidades da presen-te invenção, é fornecida uma unidade de carga descartável para fixação emum aparelho de grampeamento cirúrgico. Em várias modalidades, a unidadede carga descartável inclui um cartucho de grampos que é suportado em umtransportador que é acoplável de modo operável no aparelho de grampea-mento cirúrgico. Uma parte de bigorna é pivotantemente acoplada ao trans-portador para deslocamento pivotável seletivo entre as posições aberta efechada com relação ao cartucho de grampos. A parte de bigorna tem umafenda de bigorna axial através da mesma. Uma cobertura de bigorna podeser fixada na parte de bigorna para definir uma cavidade de bigorna entre asmesmas. A unidade de carga descartável pode ainda incluir um conjunto deacionamento axial que tem uma parte de extremidade distai que é construídapara mover em uma direção distai através de uma fenda de cartucho no car-tucho de grampos bem como a fenda de bigorna em resposta a um movi-mento de acionamento conferido ao conjunto de acionamento axial do apa-relho de grampeamento cirúrgico e também mover em uma direção proximalatravés da fenda de cartucho e a fenda de bigorna em resposta a um movi-mento de retração aplicado ao conjunto de acionamento axial a partir do a-parelho de grampeamento cirúrgico. Um pino de bigorna transverso pode sersuportado de modo destacável em uma parte de flange de retenção do con-junto de acionamento axial tal que o pino de bigorna é recebido de modomóvel na cavidade de bigorna e atravessa a fenda de bigorna. Um elementode desengate pode ser fornecido no pino de bigorna transverso e é orientadopara engatar pelo menos uma parte de pelo menos uma da cobertura debigorna e da parte de bigorna quando um movimento de retração é aplicadoao conjunto de acionamento axial independente de onde a parte de extremi-dade distai do conjunto de acionamento axial está localizada dentro da fendado cartucho para desse modo fazer o pino de bigorna ser desacoplado doconjunto de acionamento axial.
Em outro aspecto geral das várias modalidades da presente in-venção é fornecido um aparelho de grampeamento cirúrgico. Em várias mo-dalidades, o aparelho de grampeamento cirúrgico compreende um conjuntode manipulo que tem um corpo alongado acoplado de modo operável namesma. Uma unidade de carga descartável é operavelmente acoplada aocorpo alongado. Várias modalidades da unidade de carga descartável po-dem compreender um transportador que é operavelmente acoplável a umaextremidade distai do corpo alongado. Várias modalidades da unidade decarga descartável podem compreender um transportador que é operavel-mente acoplável a uma extremidade distai do corpo alongado. Um cartuchode grampos pode ser suportado no transportador. Um conjunto de bigornapode ser acoplada de modo móvel no transportador para deslocamento mó-vel seletivo entre as posições aberta e fechada com relação ao cartucho degrampos. A unidade de carga descartável pode ainda compreender um con-junto de acionamento axial que tem uma parte de extremidade distai que éconstruída para mover em uma direção distai através de uma fenda no car-tucho de grampos em resposta a um movimento de acionamento conferidono conjunto de acionamento axial do conjunto de manipulo e também moverem uma direção proximal através da fenda no cartucho de grampos em res-posta a um movimento de retração aplicado no conjunto de acionamentoaxial a partir do conjunto de manipulo. A parte de extremidade distai do con-junto de acionamento axial pode ser configurada para conferir uma força defechamento no conjunto de bigorna quando o conjunto de acionamento axialé acionado na direção distai na fenda no cartucho de grampos. Um par debarras de suporte pode ser suportado de modo móvel dentro de uma fendaaxial no conjunto de bigorna. As barras de suporte podem ser espaçadasuma da outra para permitir que a parte de extremidade distai do conjunto deacionamento axial passe de modo móvel entre as mesmas. As barras desuporte podem ser seletivamente móveis entre a primeira posição em que asbarras de suporte suportam um pino de bigorna fixado na parte de extremi-dade distai do conjunto de acionamento axial e posições retraídas em que opino de bigorna não é suportado pelas barras de suporte e é permitido de-sengatar o conjunto de bigorna. Uma articulação de conexão pode ser aco-plada nas barras de suporte e uma articulação de retração pode ser supor-tada de modo operável no corpo alongado e configurada para engatar demodo operável na articulação de conexão. Um botão atuador pode ser su-portado de modo operável no corpo alongado tal que pode interagir com aarticulação de retração para permitir que movimentos de retração sejam a-plicados na articulação de retração e articulação de conexão na atuação dobotão atuador.
BREVE DESCRIÇÃO DAS FIGURAS
Os desenhos anexos, que são incorporados e constituem umaparte deste relatório, ilustram modalidades da invenção, e, junto com a des-crição geral das várias modalidades da invenção dada acima, e a descriçãodetalhada das modalidades fornecida abaixo, servem para explicar váriosprincípios da presente invenção.
A figura 1 é uma vista de conjunto explodida de uma unidade decarga descartável não-articulável.
A figura 2 é uma vista de conjunto explodida de uma unidade decarga descartável articulável.
A figura 3 é uma vista de conjunto explodida parcial da junta dearticulação de uma unidade de carga descartável articulada anterior da figu-ra 2.
A figura 4 é uma vista em perspectiva de uma modalidade deunidade de carga não-articulável da presente invenção acoplada a um apa-relho de grampeamento cirúrgico.
A figura 5 é uma vista em perspectiva de uma modalidade deunidade de carga descartável articulável da presente invenção acoplada aum aparelho de grampeamento cirúrgico.
A figura 6 é uma vista lateral aumentada de uma parte de umconjunto de acionamento axial, pino de bigorna e presilha de pino de váriasmodalidades da presente invenção.
A figura 7 é uma vista em perspectiva de uma modalidade depresilha de pino da presente invenção.
A figura 8 é uma vista em elevação em seção transversal parcialde uma modalidade de unidade de carga descartável da presente invenção,em que várias posições do conjunto de acionamento axial são ilustradas emlinhas tracejadas.
A figura 9 é uma vista plana de uma parte da modalidade de u-nidade de carga descartável da figura 8 com uma parte da cobertura de bi-gorna removida por clareza.
A figura 10 é uma vista em seção transversal do conjunto de bi-gorna representado na figura 9, tomada ao longo da linha 10-10 na figura 9.
A figura 11 é uma vista lateral parcial de uma parte de uma mo-dalidade de unidade de carga descartável da presente invenção prendendoo tecido entre o conjunto de bigorna e o cartucho de grampos.A figura 12 é uma vista lateral parcial de uma parte de uma mo-dalidade de conjunto de acionamento axial da presente invenção.
A figura 13 é uma vista lateral parcial de uma parte de outra mo-dalidade de conjunto de acionamento axial da presente invenção.
A figura 14 é uma vista lateral parcial de uma parte de outra mo-dalidade de conjunto de acionamento axial da presente invenção.
A figura 15 é uma vista lateral parcial de uma parte de outra mo-dalidade de conjunto de acionamento axial da presente invenção.
A figura 16 é uma vista lateral parcial de uma parte de outra mo-dalidade de conjunto de acionamento axial da presente invenção.
A figura 17 é uma vista lateral parcial de uma parte de outra mo-dalidade de conjunto de acionamento axial da presente invenção.
A figura 18 é uma vista em seção transversal do conjunto de a-cionamento axial da figura 17 tomada ao longo da linha 18-18 na figura 17com o pino de bigorna mostrado antes da fixação no conjunto de acionamen-to axial.
A figura 19 é uma vista em perspectiva de outra modalidade deunidade de carga descartável da presente invenção.
A figura 20 é uma vista em perspectiva de uma parte da unidadede carga descartável da figura 19 com alguns componentes removidos porclareza.
A figura 21 é uma vista em seção transversal da unidade de car-ga descartável representada na figura 20 tomada ao longo da linha 21-21 nafigura 20.
A figura 22 é uma vista em perspectiva parcial da unidade decarga descartável das figuras 19-21 com partes de um aparelho de grampe-amento cirúrgico no qual é fixada, mostrada em linhas tracejadas.
A figura 23 é uma vista em perspectiva de uma modalidade deunidade de carga descartável da presente invenção em que o conjunto deacionamento axial é parcialmente através de seu percurso de disparo.
A figura 24 é outra vista em perspectiva da parte da unidade decarga descartável representada na figura 23 com o conjunto de acionamentoaxial na extremidade de seu percurso de disparo.
A figura 25 é outra vista em perspectiva da parte de unidade decarga descartável representada nas figuras 23 e 24 depois que o conjuntode retentorfoi desengatado do conjunto de acionamento axial.
A figura 26 é uma vista em perspectiva parcial de uma parte deoutra unidade de carga descartável da presente invenção com alguns com-ponentes removidos por clareza.
A figura 27 é uma vista de conjunto explodida da parte de unida-de de carga descartável representada na figura 26.
A figura 28 é uma vista em seção transversal de uma parte doconjunto de acionamento axial representado na figura 27.
A figura 29 é uma vista em elevação lateral da unidade de cargadescartável das figuras 26-28 com alguns componentes da mesma removi-dos por clareza.
A figura 30 é uma vista lateral da unidade de carga descartávelda figura 29, em que o tecido foi preso entre o conjunto de bigoma do mes-mo e o cartucho de grampos.
A figura 31 é outra vista lateral da unidade de carga descartáveldas figuras 29 e 30 em que o conjunto de acionamento axial foi retraído paracomeçar a liberar o pino de bigorna da alavanca de bigorna.
A figura 32 é outra vista lateral da unidade de carga descartáveldas figuras 29-31, em que o pino de bigorna foi completamente desengatadoda alavanca de bigorna.
DESCRIÇÃO DETALHADA
Voltando aos desenhos, em que numerais iguais indicam com-ponentes iguais por todas as várias vistas, a figura 1 representa uma unida-de de carga descartável não-articulável 16 que pode ser usada em conexãocom um aparelho de grampeamento cirúrgico tal como descrito em PatenteU.S. N°. 5.865.361, a descrição da qual foi incorporada aqui por referência.
Será apreciado que os termos "proximal" e "distai" são usados aqui com re-ferência a um médico agarrando um conjunto de manipulo 12 do aparelho degrampeamento cirúrgico Assim, a unidade de carga descartável 16 é distaicom respeito ao conjunto de manipulo mais proximal. Será ainda apreciadoque, por conveniência e clareza, os termos espaciais tais como "vertical","horizontal", "para cima", "para baixo", "direita", e "esquerda" são usadosaqui com respeito aos desenhos. No entanto, instrumentos cirúrgicos sãousados em muitas orientações e posições, e estes termos não pretendemser limitantes ou absolutos.
Como pode ser visto na figura 1, a unidade de carga descartávelnão-articulável 16 pode em geral compreender um conjunto de ferramenta17 para realizar procedimentos cirúrgicos tais como cortar tecido e aplicargrampos em cada lado do corte. Em particular, o conjunto de ferramenta in-clui um conjunto de cartucho 18 que aloja uma pluralidade de grampos cirúr-gicos na mesma. O conjunto de ferramenta 17 também inclui um conjunto debigorna de formação de grampo 20 que tem uma parte de bigorna 204 quetem uma pluralidade de concavidades de deformação de grampo (não mos-tradas) formadas na superfície inferior da mesma. Uma placa de cobertura208 é comumente presa em uma superfície de topo da parte de bigorna 204para definir uma cavidade de bigorna entre as mesmas. A cavidade de bi-gorna é dimensionada para receber uma extremidade distai de um conjuntode acionamento axial 212. Uma fenda longitudinal 214 se estende através daparte de bigorna 204 para facilitar a passagem de flange de retenção 284 doconjunto de acionamento axial 212 dentro da cavidade de bigorna. Uma su-perfície de carne 209 é formada em uma extremidade proximal da parte debigorna 204 e é posicionada para engatar o conjunto de acionamento axial212 para facilitar o fechamento do conjunto de bigorna 20.
O conjunto de cartucho 18 em geral inclui um transportador 216que define um canal de suporte alongado 218. O canal de suporte alongado218 é dimensionado e configurado para receber um cartucho de grampos220 no mesmo. Tal cartucho de grampos 220 suporta uma pluralidade deprendedores e impulsores como é conhecido na técnica. Uma pluralidadefendas longitudinais 230 afastadas se estendem através do cartucho degrampos 220 para acomodar cunhas de carne eretas 232 de um carrinho deatuação 234. Uma fenda central longitudinal 282 se estende ao longo docomprimento do cartucho de grampos 220 para facilitar a passagem de umalâmina de faca 280 formada no conjunto de acionamento axial 212. Durantea operação da unidade de carga descartável 16, o carrinho de atuação 234translada através das fendas 230 do cartucho de grampos 220 para avançaras cunhas de carne 232 em contato seqüencial aos impulsores que são ope-ravelmente suportados no cartucho 220 para fazer os impulsores transladarverticalmente dentro do cartucho 220 e impelir os prendedores (grampos)associados com os impulsores dentro das cavidades de deformação degrampos do conjunto de bigorna 20. Um par de elementos pivô 211 é forma-do na extremidade proximal da parte de bigorna 204 e é configurado paraser recebido em fendas 213 que são formadas no transportador 216 parapermitir que a parte de bigorna 204 pivote entre as posições aberta e de su-jeição de tecido.
Como pode também ser visto na figura 1, a unidade de cargadescartável 16 também tem uma parte de alojamento 200 que é adaptadapara encaixar em ou de outro modo ser fixada no transportador 216. O con-junto de acionamento axial 212 inclui uma alavanca de acionamento alonga-da 266 que tem um cabeçote de trabalho distai 268 e uma seção de engateproximal 270. Como é conhecido, a alavanca de acionamento 266 pode serconstruída a partir de uma folha única de material ou, de preferência, a partirde múltiplas folhas empilhadas. A seção de engate 270 inclui um par de de-dos de engate 270a e 270b que são dimensionados e configurados para en-gatar de modo montado um par de fendas de retenção correspondentes272a formadas em um elemento de acionamento 272. O elemento de acio-namento 272 pode incluir um orifício proximal (não mostrado) que é configu-rado para receber a extremidade distai de uma haste de controle como dis-cutido na Patente U.S. N°. 5.865.361.
A extremidade distai da alavanca de acionamento 266 inclui umtirante de suporte vertical 278 que suporta a lâmina de faca 280 e uma su-perfície de contra-apoio 283 que engata a parte central do carrinho de atua-ção 234 durante o procedimento de grampeamento. A superfície 285 estálocalizada na base da superfície 283 e é configurada para receber um ele-mento de suporte 287 que é deslizantemente posicionado ao longo do fundodo transportador 216. A lâmina de faca 280 é em geral posicionada paratransladar ligeiramente atrás do carrinho de atuação 234 através de umafenda longitudinal central 282 no cartucho de grampos 220 para formar umaincisão entre as fileiras do tecido corporal grampeado.
Um flange de retenção 284 pode se projetar distalmente do tiran-te vertical 278 e suportar um pino de carne 286 em sua extremidade distai. Opino de carne 286 pode ser dimensionado e configurado para engatar a su-perfície de carne na parte de bigorna 204 para prender a parte de bigorna204 contra o tecido corporal. Em adição, um feixe de molas 207 (não-mostrado) pode ser fornecido entre a extremidade proximal da parte de bi-gorna 204 e a parte terminal distai do alojamento 200 para orientar o conjun-to de bigorna 20 para uma posição normalmente aberta. A unidade de cargadescartável 16 pode ainda incluir um dispositivo de travamento 288 comodescrito na Patente U.S. N°. 5.865.361.
A figura 2 ilustra uma unidade de carga descartável articulável16' que inclui um conjunto de ferramenta 17 que tem um conjunto de bigorna20 e um conjunto de cartucho 18. O conjunto de bigorna 20 inclui uma partede bigorna 204 que tem uma pluralidade de concavidades de deformação degrampo (não mostradas) formadas na superfície inferior da mesma. Umaplaca de cobertura 208 é presa em uma superfície de topo da parte de bi-gorna 204 para definir uma cavidade de bigorna entre as mesmas. A cavida-de de bigorna é dimensionada para receber uma extremidade distai de umconjunto de acionamento axial 212. Uma fenda longitudinal 214 se estendeatravés da parte de bigorna 204 para facilitar a passagem de flange de re-tenção 284 do conjunto de acionamento axial 212 dentro da cavidade debigorna. Uma superfície de carne 209 formada na parte de bigorna 204 podeser posicionada para engatar o conjunto de acionamento axial 212 para faci-litar a sujeição do tecido entre o conjunto de bigorna 20 e o cartucho 18.
O conjunto de cartucho 18 inclui um transportador 216 que su-porta um cartucho de grampos 220 no mesmo. O cartucho de grampos 220inclui fendas de retenção 225 para receber uma pluralidade de prendedores(grampos) e impulsores. Uma pluralidade de fendas longitudinais afastadas230 se estendem através do cartucho de grampos 220 para acomodar cu-nhas de carne eretas 232 de um carrinho de atuação 234. Uma fenda longi-tudinal central 282 se estende ao longo do comprimento de cartucho degrampos 220 para facilitar a passagem de uma lâmina de faca 280. Durantea operação da unidade de carga descartável 16' o carrinho de atuação 234translada através de fendas longitudinais 230 do cartucho de grampos 220para avançar as bordas de carne 232 em contato seqüencial com os impul-sores que são operavelmente suportados no cartucho 220 para fazer os im-pulsores impelir os prendedores nas cavidades de deformação de gramposdo conjunto de bigorna 20. Um par de elementos pivô 211 é formado na par-te de bigorna 204 e é posicionado dentro de fendas 213 formadas no trans-portador 216 para guiar a parte de bigorna 204 entre as posições aberta e desujeição de tecido.
A unidade de carga articulável 16' ainda inclui uma parte de alo-jamento 200 que compreende uma metade superior de alojamento 250 euma metade inferior de alojamento. A extremidade proximal da metade dealojamento 250 pode incluir protuberâncias de engate 254 para engatar demodo liberável o corpo alongado 14. As protuberâncias 254 formam um aco-plamento do tipo baioneta com a extremidade distai do corpo 14 como des-crito na Patente U.S. N° 5.865.361. Como pode também ser visto na figura 2,o conjunto de acionamento axial 212 inclui uma alavanca de acionamentoalongada 266 que tem um cabeçote de trabalho distai 268 e uma seção deengate proximal 270. A alavanca de acionamento 266 pode ser construída apartir de uma folha única de material, ou, de preferência, de múltiplas folhasempilhadas. A seção de engate 270 inclui um par de dedos de engate 270ae 270b que são dimensionados e configurados para engatar de modo mon-tado um par de fendas de retenção correspondentes 27a formado em umelemento de acionamento 272. O elemento de acionamento 272 inclui umorifício proximal (não mostrado) configurado para receber a extremidade dis-tai da haste de controle 52 quando a extremidade proximal da unidade decarga descartável 16' está engatada com o corpo alongado 14 de um apare-lho de grampeamento cirúrgico como descrito na Patente U.S. N°.5.865.361. A extremidade distai da alavanca de acionamento 266 é definidapor um tirante de suporte vertical 278 que suporta uma lâmina de faca 280, euma superfície de contra-apoio 283 que engata a parte central de carrinhode atuação 234 durante um procedimento de grampeamento. A superfície285 na base da superfície 283 pode ser configurada para receber um ele-mento de suporte 287 que é deslizantemente posicionado ao longo do fundodo transportador 216. A lâmina de faca 280 é em geral posicionada paratransladar ligeiramente atrás do carrinho de atuação 234 através de umafenda longitudinal central 282 no cartucho de grampos 220 para formar umaincisão entre as fileiras de tecido corporal grampeado. Para fornecer suportepara a alavanca de acionamento 266 dentro do alojamento 200 quando aalavanca de acionamento 266 é avançada axialmente, um elemento de es-tabilização de lâmina 290 é montado dentro do alojamento 200. Um flangede retenção 284 se projeta distalmente a partir do tirante vertical 278 e su-porta um par de rolos de carne cilíndricos 286 em sua extremidade distai. Osrolos de carne 286 são dimensionados e configurados para engatar a super-fície de carne 209 na parte de bigorna 204 para prender a parte de bigorna204 contra o tecido corporal.
Como pode ser visto nas figuras 2 e 3, a unidade de recarga ar-ticulável 16' inclui uma junta de articulação 340 que inclui um conjunto demontagem 202 que compreende uma parte de montagem superior 236 euma parte de conjunto inferior 238. Um pino pivô 244 é formado em cadauma das partes de montagem 236, 238 e serve para definir um eixo pivô"A1-A1" que pode ser substancialmente perpendicular ao eixo longitudinal"L-L" da unidade de carga descartável articulável 16'. O conjunto de conjunto202 é pivotantemente acoplado à extremidade distai do conjunto de aloja-mento 200 por um par de elementos de acoplamento 246. Os elementos deacoplamento 246, cada, têm um furo 247 através dos mesmos para receberum pino correspondente 244 através dos mesmos. A extremidade proximal248 de cada elemento de acoplamento 246 é configurada para ser recebidade modo travado em uma ranhura correspondente 251 formada na extremi-dade distai da metade superior de alojamento 250 e a extremidade distai dametade inferior de alojamento 252. Um par de molas 207 é fornecido entre aextremidade proximal da parte de bigorna 204 e a parte de conjunto superior236 para orientar o conjunto de bigorna 20 para uma posição normalmenteaberta. Um elo de articulação 256 pode ser fornecido para articular o conjun-to de ferramenta 17 em torno do eixo de articulação "A1-A1" com relação aoconjunto de alojamento 200 como é mostrado na Patente U.S. N°.5.865.361.
Unidades de carga descartáveis anteriores podem sofrer da in-capacidade de serem disparadas em tecidos mais espessos (por exemplo,tecidos com espessuras maiores que 3,5 mm) devido às cargas aumentadasaplicadas em seus sistemas de disparo. Tais cargas aumentadas, por exem-plo, podem aumentar a probabilidade de que o sistema de disparo falhequando a lâmina 280 está ainda no conjunto de bigorna e pode portanto exi-gir que o conjunto de ferramenta 17 seja cortado do tecido tal modo de falhapode levar a sérias conseqüências de ferimento para o paciente.
A figura 4 ilustra uma unidade de carga descartável 116 da pre-sente invenção empregada em conexão com um aparelho de grampeamentocirúrgico 10. A figura 5 ilustra uma unidade de carga descartável articulável116' da presente invenção empregada em conexão com um aparelho degrampeamento cirúrgico 10. A unidade de carga descartável não-articulável116 da presente invenção é similar à unidade de carga não-articulável 16descrita acima, exceto pelos aperfeiçoamentos da presente invenção discu-tidos em detalhe abaixo. A unidade de carga descartável articulável 116' ésimilar à unidade de carga descartável articulável 16' descrita acima excetopelos aperfeiçoamentos da presente invenção descritos abaixo. O aparelhode grampeamento cirúrgico 10 pode incluir um conjunto de manipulo 12 eum corpo alongado 14 e ser do tipo e construção descritos na Patente U.S.N°. 5.865.361, que foi incorporada aqui por referência.
As figuras 6-12 ilustram um conjunto de liberação de bigornaúnica e nova 400 da presente invenção que pode ser empregada com su-cesso com a unidade de carga descartável não-articulável 116 e a unidadede carga descartável articulável 116' da presente invenção. Nestas modali-dades, um pino de carne único 286 é empregado. O pino de carne 286 en-caixa em um soquete 410 formado no flange de retenção 284 de conjunto deacionamento axial 212. Ver figura 6. O conjunto de liberação de bigorna 400pode ainda incluir um elemento de desengate na forma de uma presilha depino 401 do tipo representado na figura 7. Como pode ser visto nesta figura,a presilha de pino 401 pode incluir pelo menos uma parte de presilha superi-or 402 e pelo menos uma parte de presilha inferior 404. Um reforçador 406pode ser fornecido na extremidade distai da presilha de pino 400. A presilhade pino 401 pode ser configurada para encaixar em ou de outro modo serfixada no pino de carne 286. Como pode ser visto na figura 6, quando a pre-silha de pino 401 é fixada no pino de carne 286, as extremidades superioresdas partes de presilha superiores 402 se estendem além de uma superfíciesuperior 267 da parte de flange de retenção 284 do conjunto de acionamentoaxial 212 uma distância curta "U" e as partes de presilha inferiores 404 seestendem além de uma superfície inferior 269 da parte de flange de retenção284 do conjunto de acionamento axial 212 uma distância curta "L". Em vá-rias modalidades, por exemplo, "U" e "L" podem, ser de aproximadamente0,05 a 0,10 cm (0,02 a 0,04 polegada).
A operação das unidades de carga descartáveis 116 e 116' seráexplicada com referência às figuras 8 e 11. A figura 8 ilustra várias posiçõesdo conjunto de acionamento 212 e do pino de carne 286 e a presilha de pino401 quando é acionada distalmente através do conjunto de ferramenta 17.
Nenhum tecido é mostrado na figura 8. A figura 11 ilustra o tecido "T" presoentre a parte de bigorna 204 e o cartucho de grampos 220. Nesta figura, noentanto, muito tecido "T" foi preso no conjunto de ferramenta 17 desse modofazendo o conjunto de acionamento 212 se tornar emperrado quando é acio-nado através do tecido "T" na direção distai "DD". Neste ponto, o médicosimplesmente retrai o conjunto de acionamento 212 na direção proximal"PD". Quando o conjunto de acionamento axial 212 é retraído, as partes depresilha superior e inferior 402, 404, respectivamente penetram na coberturade bigorna 208' e a base de bigorna 204, respectivamente. Quando a forçade retração continua a ser aplicada no conjunto de acionamento axial 212, opino de carne 286 é desalojado do soquete 410 formado no flange de reten-ção 284 do conjunto de acionamento axial 212 desse modo permitindo que oconjunto de acionamento axial 212 continue na direção proximal "PD" e tam-bém permitindo que o conjunto de bigorna 20 pivote aberto (seta "P") paraliberar o tecido "T" do conjunto de ferramenta 17. Ver figura 11. Aqueles ver-sados na técnica apreciarão que o pino de carne 286 e o soquete 410 devemser dimensionados com relação um ao outro tal que o pino 286 seja desalo-jado do soquete 410 quando o conjunto de acionamento 212 é retraído du-rante um emperramento. Igualmente, as partes de presilha superiores 402 eas partes de presilha inferiores 404 devem ser configuradas para penetrar oude outro modo engatar a cobertura 208' e a base de .bigorna 204, respecti-vamente como descrito acima. Será entendido que quando o pino de bigorna286 é destacado do conjunto de acionamento axial 212, o pino 286, com apresilha de pino 401 fixada no mesmo, permanece preso dentro da cavidadede bigorna 210 formada entre a cobertura de bigorna 208 e a parte de bigor-na 204 para impedir o pino 286 de se tornar perdido no paciente.
As configurações alternativas de conjunto de acionamento e so-quete são representadas nas figuras 12-18. Configurações similares sãodescritas no Pedido de Patente U.S. N° de série 11/820.077 Comumentecedido, depositado em 18 de junho de 2007, intitulado Surgical Stamplingand Cutting Instrument with Improved Anvil Opening Features, para RichardW, Timm, Frederick E. Shelton, IV e Jeffrey S. Swayze, a descrição da qualé aqui incorporada por referência. Por exemplo, o conjunto de acionamentoaxial 1212 da figura 12 é substancialmente idêntico à modalidade das figuras6-11, exceto que a fenda 1410 se estende dentro da extremidade distai doflange de retenção 284. O conjunto de acionamento axial 2212 da figura 13 étambém similar às modalidades das figuras 6-11, exceto que o flange de re-tenção 284 do conjunto de acionamento axial 2212 tem um elemento de re-forço 2214 formado no mesmo. Na modalidade da figura 14, o flange de re-tração 284 do conjunto de acionamento axial 3212 tem uma parte rebaixada3214 e a fenda 3410 é inicialmente torcida fechada. Quando o conjunto deacionamento axial 3212 é retraído, a presilha de pino 400 penetra comodescrito acima, a parte de fundo 3216 formando a fenda 3410 é permitida securvar para baixo para liberar o pino 286. Na modalidade representada nafigura 15, o flange de retenção 284 do conjunto de acionamento axial 4212tem uma fenda 4410 que é definida por uma aba curvável 4216 que pode sercurvada ou deformada para abrir a fenda 4410 para permitir que o pino 286seja removido da mesma. O flange de retenção 284 do conjunto de aciona-mento axial 5212 representado na figura 16 tem uma segunda fenda 5412que se comunica com a primeira fenda de pino 5410 que permite que a pri-meira fenda de pino 5410 seja aberta em um ponto onde o pino 286 podeser liberado da mesma. Na modalidade representada nas figuras 6-16, o pi-no 286 tem um formato de seção transversal substancialmente circular. Namodalidade representada nas figuras 17 e 18, o pino 6286 tem uma partecom um formato de seção transversal dimensionado para ser recebido nafenda 6210 e também tem asas laterais ou gussês 6288 para fornecer supor-te adicional ao pino 6286 e minimizar qualquer probabilidade do pino 6286se curvar quando o conjunto de acionamento axial 6212 é acionado na dire-ção distai "DD".
As figuras 19-22 ilustram outra unidade de carga descartável7016 da presente invenção que pode ser substancialmente similar à unidadede carga descartável não-articulável 16 descrita acima, exceto para aperfei-çoamentos únicos e novos descritos abaixo. Como pode ser visto nas figuras19 e 20, a unidade de carga descartável 7016 inclui um conjunto de ferra-menta 17 que inclui um cartucho de grampos 220 que aloja uma pluralidadede grampos cirúrgicos no mesmo. O conjunto de ferramenta 17 também in-clui um conjunto de bigorna de formação de grampos 7020. Tal unidade decarga descartável 7016 pode realizar procedimentos cirúrgicos tais comotecido de corte e aplicar grampos em cada lado do corte. O conjunto de bi-gorna 7020 em geral inclui uma parte de bigorna 7204 que tem uma plurali-dade de concavidades de deformação de grampo (não mostrada) formadasna superfície inferior da mesma. Uma placa de cobertura 208 é comumentepresa em uma superfície de topo da parte de bigorna 7204 para definir umacavidade de bigorna 210 entre as mesmas. A cavidade de bigorna 210 é di-mensionada para receber uma extremidade distai de um conjunto de acio-namento axial 7212. Uma superfície de carne 7209 é formada em uma ex-tremidade proximal da parte de bigorna 7204 e é posicionada para engatepor um pino de carne 7286 que é fixado em um flange de retenção 7284 doconjunto de acionamento axial 7212 para facilitar o fechamento do conjuntode bigorna 7020.
A unidade de carga descartável 7016 também inclui um trans-portador 7216 que suporta o cartucho de grampos 220 em uma maneiradescrita acima. A parte de alojamento 7200 pode ser adaptada para encaixarem ou de outro modo ser fixada no transportador 7216. O conjunto de acio-namento axial 7212 pode incluir um braço de acionamento alongado 7266que tem um cabeçote de trabalho distai 7268 e uma seção de engate proxi-mal 7270. A alavanca de acionamento 7266 pode ser construída a partir deuma folha única de material ou, de preferência a partir de múltiplas folhasempilhadas. A seção de engate 7270 inclui um par de dedos de engate7270a e 7270b que são dimensionados e configurados para engatar de mo-do montado um elemento de acionamento como foi discutido acima. Comonotado acima, o elemento de acionamento pode incluir um orifício proximalconfigurado para receber a extremidade distai de uma haste de controle.
Como mostrado na figura 21, a extremidade distai da alavancade acionamento 7266 inclui um tirante de suporte vertical 7278 que suporta alâmina de faca 7280, e uma superfície de contra-apoio 7283 que engata aparte central de um carrinho de atuação durante o procedimento de grampe-amento. A superfície 7285 na base de superfície 7283 é configurada parareceber um elemento de suporte 7287 que é posicionado de modo deslizan-te ao longo do fundo do transportador 7216. A lâmina de faca 7280 é emgeral posicionada para transladar ligeiramente atrás do carrinho de atuaçãoatravés de uma fenda longitudinal central no cartucho de grampos 220 paraformar uma incisão entre as fileiras de tecido corporal grampeados.
Um flange de retenção 7284 se projeta distalmente do tirantevertical 7278 e suporta um pino de carne 7286 em sua extremidade distai. Opino de carne 7286 é dimensionado e configurado para engatar a superfíciede carne 7209 na parte de bigorna 7204 para prender a parte de bigorna7204 contra o tecido corporal. Em adição, um feixe de molas pode ser forne-cido entre a extremidade proximal da parte de bigorna 7204 e a parte termi-nal distai do alojamento 7200 para orientar o conjunto de bigorna 7020 parauma posição normalmente aberta.
As modalidades representadas nas figuras 19-22 empregam umconjunto de liberação de bigorna 400' que inclui um conjunto de suporte debigorna retrátil novo e único 7300 que pode compreender um par de barrasde suporte de bigorna 7302 que são recebidas em uma abertura 7305 naparte de bigorna 7204 e são suportadas em ressaltos correspondentes 7207formados na mesma. Ver figura 21. As barras de suporte de bigorna 7302são suportadas em relação espaçada uma coma outra para definir uma fen-da alongada 7309 entre as mesmas para receber o tirante de suporte vertical7278 e a lâmina de faca 7280 através da mesma. Como pode ser visto nestafigura, quando as barras de suporte de bigorna 7302 são suportadas emseus ressaltos respectivos 7207, o pino de carne 7286 se desloca nas mes-mas para forçar o conjunto de bigorna 7020 dentro da posição de sujeiçãode tecido para o cartucho de grampos 220. A extremidade proximal 7304 decada barra de suporte de bigorna 7302 pode ser fixada em uma base desli-zante 7310 que é configurada para deslizar axialmente dentro do transporta-dor 7216 e do alojamento 7200. A base deslizante 7310 pode compreenderuma parte esquerda 7312 e uma parte direita 7314 que são localizadas emlados opostos do conjunto de acionamento 7212. Uma articulação de cone-xão de liberação 7400 é fixada na base deslizante 7310, que pode ter umdetentor 7402 em sua extremidade proximal.
A unidade de carga descartável 7016 pode ser usada em cone-xão com um aparelho de grampeamento cirúrgico convencional 10 do tipodescrito na Patente U.S. N°. 5.865.361 que foi modificado da seguinte ma-neira. Em particular, o aparelho de grampeamento cirúrgico 10 tem um botãorotativo 28 que tem um corpo alongado 14 fixado no mesmo. O corpo alon-gado 14 é configurado para interfacear de modo operável com os detentores254 na extremidade proximal da unidade de carga descartável 7016 em umamaneira conhecida. No entanto, um botão atuador 7500 é deslizantementerecebido no corpo alongado 14 do aparelho de grampeamento cirúrgico 10 eé fixado em uma barra atuadora 7510 que é recebida dentro do corpo alon-gado 14 e tem uma extremidade proximal 7512 que se estende através deuma fenda axial (não mostrada) no corpo alongado 14. A barra atuadora7510 também tem uma extremidade distai 7514 que tem um gancho 7516que é adaptado para engatar de modo liberável o detentor 7402 na articula-ção de conexão 7400 quando a unidade de carga descartável 7016 é aco-piada na extremidade distai do corpo alongado 14. Ver figura 22.
Durante o uso, as barras de suporte retrateis 7302 são posicio-nadas como ilustrado nas figuras 20 e 21. Quando nesta posição, as barrasde suporte 7302 suportam o pino de carne 7286 nas mesmas tal que o pinode carne retém o conjunto de bigorna 7020 na posição de sujeição de tecido.
Como pode ser visto na figura 20, as barras de suporte 7302 são recebidasna abertura na parte de bigorna 7204 e servem para definir uma abertura derecepção de pino na parte de bigorna 7204 para o pino de carne se estenderatravés da mesma quando o conjunto de acionamento axial 7212 atingiu aextremidade do percurso de disparo (por exemplo, em sua posição mais dis-tal) para permitir que o conjunto de bigorna 7020 pivote para a posição aber-ta para liberar o tecido da mesma. Se, no entanto, durante o percurso dedisparo, o conjunto de acionamento axial 7212 se tornar emperrado, o médi-co pode liberar o tecido do conjunto de ferramenta 17 simplesmente agar-rando o botão atuador 7500 e movendo-o axialmente no corpo alongado 14na direção proximal "PD". Quando o botão atuador 7500 é movido na dire-ção proximal "PD", as barras de suporte 73021 são também retraídas a umponto em que as barras de suporte 7302 não suportam mais o pino de carne7286 e permite assim que o pino de carne 7286 passe através da fenda seestendendo axialmente 7205 na parte de bigorna 7204. Quando o pino decarne 7286 passa através da fenda 7205, o conjunto de bigorna 7020 é per-mitido se mover para a posição aberta em que o conjunto de ferramenta po-de ser liberado do tecido. Como pode ser visto na figura 19, a unidade decarga descartável 7016 é mais longa que uma unidade de carga descartávelconvencional 16 por uma distância "D" que é a distância exigida para forne-cer uma quantidade desejada de folga para retrair as barras de suporte 7302dentro do conjunto de alojamento 7200. Assim, o médico pode liberar o con-junto de bigorna 7020 (por exemplo, soltar o tecido) se o conjunto de acio-namento axial 7212 se tornar emperrado em qualquer ponto durante o per-curso de disparo.
As figuras 23-25 ilustram uma parte de uma unidade de cargadescartável alternativa 8016 que pode ser substancialmente idêntica às uni-dades de carga descartáveis 16, 16' exceto pelos aperfeiçoamentos únicos enovos discutidos abaixo. Por exemplo, esta modalidade emprega um conjun-to de liberação de bigoma 400" que compreende um conjunto de retentormóvel 8100. Em várias modalidades, o conjunto de retentor 8100 pode com-preender um corpo de retentor 8101 que tem um pino de bigorna 8102 e umpino retentor 8104 montados no mesmo. O conjunto de retentor 8100 é di-mensionado para deslizar dentro da fenda axial 214 na parte de bigorna 204e é configurado para engatar de forma liberável um entalhe 8285 correspon-dente na parte de retentor 8284 do conjunto de acionamento axial 8212. Oconjunto de acionamento axial 8212 pode de outro modo ser similar ao con-junto de acionamento axial 212 como foi descrito acima. O conjunto de re-tentor 8100 e o entalhe 8285 são configurados tal que o conjunto de retentoré frouxamente acoplado quando o conjunto de acionamento axial 8212 éacionado através do cartucho de grampos, ainda quando o conjunto de acio-namento axial 8212 é retraído, as forças friccionais entre o conjunto de re-tentor 8100 e a parte de bigorna 204 retêm o conjunto de retentor 8100 emposição e desse modo permitem que o conjunto de acionamento axial 8212desacople do mesmo. Quando o conjunto de acionamento axial 8212 desa-copla do conjunto de retentor 8100, o conjunto de bigorna 8020 é permitidopivotar para a posição aberta. Assim se o conjunto de acionamento axial8212 se torna emperrado em qualquer ponto durante o percurso de disparo,o médico pode simplesmente retrair o conjunto de acionamento axial 8212que o faz desacoplar do conjunto de retentor 8100 e desse modo permiteque o conjunto de bigorna 8020 pivote aberto e libere o tecido no mesmo.Como pode ser visto nas figuras 24 e 25, quando o conjunto de acionamentoaxial 8212 atingiu o fim do percurso de disparo, o pino de bigorna 8102 caidentro da fenda transversa 215 na parte de bigorna 204 e desse modo facili-ta o desacoplamento do conjunto de acionamento axial 8212 do conjunto deretentor 8100 para permitir que o conjunto de bigorna 8020 pivote para aposição aberta. Será apreciado que quando o conjunto de bigorna 8020 pi-vota para a posição aberta, o conjunto de retentor 8100 permanece com aparte de bigorna 204, porque o pino retentor 8104 é maior que a fendatransversa 215. Assim o conjunto de retentor 8100 se tornará desacopladodo conjunto de bigorna 8020 e possivelmente se tornará perdida no paciente.
As figuras 26-32 ilustram uma parte de uma unidade de cargadescartável alternativa 9016 que pode ser substancialmente idêntica às uni-dades de carga descartáveis 16, 16' exceto pelos aperfeiçoamentos únicos enovos discutidos abaixo. Por exemplo, esta modalidade emprega um conjun-to de liberação de bigorna 9000 que inclui um braço de bigorna pivotável9100 que é adaptado para engatar de modo liberável um pino de bigorna9102. A alavanca de bigorna pivotável 9100 é dimensionado para ser rece-bido dentro de uma fenda 9215 formada em uma extremidade distai bifurca-da 9213 de um conjunto de acionamento axial 9212. O conjunto de aciona-mento axial 9212 pode de outro modo ser similar ao conjunto de acionamen-to axial 212 como foi descrito acima. Mais especificamente e com referênciaà figura 28, a extremidade distai 9213 pode ser formada com um batente deempuxo 9217, um ressalto distai 9219 e uma fenda pivô 9220. Como podeser visto na figura 27, a alavanca de bigorna pivotável 9100 tem um munhão9104 que se projeta de cada lateral do mesmo para ser recebido na fendapivô 9220. O topo da alavanca de bigorna pivotável 9100 tem um entalhe deempuxo 9106 formado no mesmo para engate com o batente de empuxo9217 no conjunto de acionamento axial 9212. A extremidade distai superiorda alavanca de bigorna pivotável 9100 também tem um entalhe de pino 9108formado no mesmo para engate com o pino de bigorna 9102. O pino de bi-goma 9102 pode ser fornecido com uma ranhura (não mostrada) adaptadapara receber de modo friccional uma parte da alavanca de bigorna pivotável9100 para acoplar de modo liberável o pino de bigorna 9102 da alavanca debigorna pivotável 9100. Outros métodos podem ser empregados para aco-plar de modo liberável o pino de bigorna 9102 na alavanca de bigorna pivo-tável 9100 sem se afastar do espírito e escopo da presente invenção.
A operação da unidade de carga descartável 9016 será agoradescrita com referência às figuras 30-32. A figura 30 ilustra uma parte dotecido "T" preso na unidade de carga descartável 9016 em que o conjunto deacionamento axial 9212 se tornou emperrada. Como pode ser visto nestafigura, o pino pivô 9104 está localizado na extremidade proximal da fenda9220 e a força "F" que é gerada pelo tecido localizado entre a parte de bi-gorna 204 e o cartucho de grampos 220 está empurrando para cima no pinode bigorna 9102. Para liberar o tecido "T", o médico retrai o conjunto de a-cionamento axial 9212 na direção proximal "PD" que permite que a alavancade bigorna 9100 pivote como ilustrado pela seta "p" na figura 31. Quando oconjunto de bigorna 9020 pivota para cima, a força "F" no pino de bigorna9102 se dissipa. O movimento do conjunto de acionamento axial 9212 nadireção proximal a uma distância que é substancialmente igual ao compri-mento da fenda 9220 permite que o pino pivô seja completamente liberadoda alavanca de bigorna 9100 como ilustrado na figura 32 para desse modopermitir que o conjunto de bigorna 9020 pivote para a posição aberta. Quan-do isto acontece, o pino de bigorna 9102 é retido dentro da cavidade de bi-gorna 210 formada entre a parte de bigorna 204 e a placa de cobertura debigorna 208.
Enquanto várias modalidades da invenção foram descritas, deveser evidente, no entanto, que várias modificações, alterações e adaptaçõesnaquelas modalidades podem ocorrer a pessoas versadas na técnica com aobtenção de algumas ou todas as vantagens da invenção. Por exemplo, deacordo com as várias modalidades, um componente único pode ser substitu-ído por múltiplos componentes, e múltiplos componentes podem ser substi-tuídos por um único componente, para realizar uma função dada ou funções.Esta aplicação portanto pretende cobrir todas as modificações, alterações eadaptações sem se afastar do escopo e espírito da invenção descrita comodefinida pelas reivindicações anexas.
Qualquer patente, publicação, ou outro material de descrição, notodo ou em parte, que é dito ser incorporado por referência aqui, é incorpo-rado somente na medida em que os materiais incorporados não conflitemcom as definições, regras existentes, ou outro material de descrição apre-sentado nesta descrição. Como tal, na medida necessária, a descrição comoexplicitamente apresentada aqui substitui qualquer material conflitante incor-porado aqui por referência. Qualquer material, ou parte do mesmo, que édito ser incorporado por referência aqui, mas que conflita com definiçõesexistentes, regras ou outro material de descrição apresentado aqui será so-mente incorporado na medida em que nenhum conflito surja entre este mate-rial incorporado e o material de descrição existente.
A invenção que pretende ser protegida, não deve ser construídacomo limitada pelas modalidades particulares descritas. As modalidades sãoportanto vistas como ilustrativas em vez de restritivas. Variações e mudan-ças podem ser feitas por outros sem se afastar do espírito da presente in-venção. Consequentemente, é expressamente pretendido que todos os e-quivalentes, variações e mudanças que se encontram dentro do espírito eescopo da presente invenção como definida nas reivindicações sejam a-brangidos pela mesma.
Claims (19)
1. Unidade de carga descartável para fixação em um aparelhode grampeamento cirúrgico, a dita unidade de carga descartável compreen-dendo:um cartucho de grampos suportado em um transportador aco-plável de modo operável no aparelho de grampeamento cirúrgico;um conjunto de bigorna acoplado de modo móvel no dito trans-portador para deslocamento móvel seletivo entre as posições aberta e fe-chada com relação ao dito cartucho de grampos;um conjunto de acionamento axial que tem uma parte de extre-midade distai construída para mover em uma direção distai através de umafenda no dito cartucho de grampos em resposta a um movimento de acio-namento conferido ao dito conjunto de acionamento axial a partir do apare-lho de grampeamento cirúrgico, e também mover em uma direção proximalatravés da dita fenda no dito cartucho de grampos em resposta a um movi-mento de retração aplicado no dito conjunto de acionamento axial a partir doaparelho de grampeamento cirúrgico, a dita parte de extremidade distai dodito conjunto de acionamento axial configurado para conferir uma força defechamento no dito conjunto de bigorna na medida em que o dito conjuntode acionamento axial é acionado na dita direção distai na dita fenda no ditocartucho de grampos; eum conjunto de liberação de bigorna que coopera de modo ope-rável com a dita parte de extremidade distai do dito conjunto de acionamentoaxial e o dito conjunto de bigorna para fazer seletivamente a dita parte deextremidade distai do dito conjunto de acionamento axial descontinuar, con-ferindo a dita força de fechamento no dito conjunto de bigorna independentede onde a dita parte de extremidade distai do dito conjunto de acionamentoaxial está localizada dentro da dita fenda no dito cartucho de grampos.
2. Unidade de carga descartável, de acordo com a reivindicação-1, em que o dito conjunto de liberação de bigorna compreende:um pino de bigorna acoplado de modo liberável na dita parte deextremidade distai do dito conjunto de acionamento axial e posicionado paraconferir a dita força de fechamento no dito conjunto de bigorna quando a ditaparte de extremidade distai do dito conjunto de acionamento axial é aciona-da na dita direção distai; eum elemento de desengate interfaceando com o dito pino de bi-gorna para desacoplar o dito pino de bigorna da dita parte de extremidadedistai do dito conjunto de acionamento axial na aplicação do movimento deretração no dito conjunto de acionamento axial.
3. Unidade de carga descartável, de acordo com a reivindicação 2, em que o dito elemento de retração compreende uma presilha de pinofixada no dito pino de bigorna e configurado para engatar pelo menos umaparte do dito conjunto de bigorna quando o movimento de retração é aplica-do no dito conjunto de acionamento axial e desse modo fazer o dito pino debigorna ser desacoplado do mesmo.
4. Unidade de carga descartável, de acordo com a reivindicação 1, em que o dito conjunto de liberação de bigorna compreende um conjuntode suporte suportado de modo móvel pelo dito conjunto de bigorna e sendoseletivamente móvel entre uma primeira posição em que a dita parte de ex-tremidade distai do dito conjunto de acionamento axial confere a dita forçade fechamento na mesma e as posições retraídas em que a dita parte deextremidade distai do dito conjunto de acionamento axial não podem conferira dita força de fechamento na mesma para desse modo permitir que o ditoconjunto de bigorna se mova para a dita posição aberta.
5. Unidade de carga descartável, de acordo com a reivindicação 4, em que o dito conjunto de suporte compreende um par de barras de suporte suportadas de modo móvel dentro de uma fenda axial no dito conjuntode bigorna, as ditas barras de suporte espaçadas uma da outra para permitirque a dita parte de extremidade distai do dito conjunto de acionamento axialpasse de modo móvel entre as mesmas, as ditas barras de suporte seleti-vamente móveis entre a dita primeira posição em que as ditas barras de su-porte suportam um pino de bigorna na dita parte de extremidade distai dodito conjunto de acionamento axial e as ditas posições retraídas em que odito pino de bigorna não é suportado pelas ditas barras de suporte e é permi-tido desengatardo conjunto de bigorna.
6. Unidade de carga descartável, de acordo com a reivindicação-5, em que o dito conjunto de suporte ainda compreende:uma articulação de retração acoplada nas ditas barras de suporte; eum botão atuador operavelmente suportado em uma parte doaparelho de grampeamento cirúrgico e configurado para ser removivelmenteacoplado na articulação de retração para permitir que movimentos de retra-ção sejam aplicados na mesma, na atuação do dito botão atuador.
7. Unidade de carga descartável, de acordo com a reivindicação-1, em que o dito conjunto de liberação de bigorna compreende um retentorsuportado de modo móvel pelo dito conjunto de bigorna e acoplado de modoliberável na dita parte de extremidade distai do dito conjunto de acionamentoaxial tal que na aplicação de movimento de retração no dito conjunto de a-cionamento axial, o dito retentor é desacoplado da mesma para desse modopermitir que o conjunto de bigorna se mova para a posição aberta.
8. Unidade de carga descartável, de acordo com a reivindicação-7, em que o dito retentor compreende:um corpo de retentor dimensionado para mover axialmente den-tro de uma primeira fenda de bigorna se estendendo axialmente no dito con-junto de bigorna e configurado para engatar de modo liberável um entalhe deretentor na dita extremidade distai do dito conjunto de acionamento axial;um pino de bigorna transverso acoplado no dito corpo de reten-tor tal que o dito pino de bigorna atravessa a dita primeira fenda de bigornase estendendo axialmente no dito conjunto de bigorna e é dimensionado pa-ra passar através de uma segunda fenda de bigorna localizada em uma ex-tremidade distai da dita primeira fenda de bigorna; eum pino retentor transverso acoplado no dito corpo de retentortal que o dito pino retentor atravessa a dita primeira fenda de bigorna e éincapaz de passar através da dita segunda fenda de bigorna.
9. Unidade de carga descartável, de acordo com a reivindicação-1 em que o dito conjunto de liberação de bigorna compreende:um braço de bigorna acoplado de modo móvel na dita parte deextremidade distai do dito conjunto de acionamento axial;um pino de bigorna transverso engatado de modo destacávelcom o dita alavanca de bigorna e posicionado para conferir a dita força defechamento no dito conjunto de bigorna na medida em que a dita extremida-de distai do dito conjunto de acionamento axial é acionada na dita direçãodistai e se torna destacada do dita alavanca de bigorna na aplicação de umaforça de retração no dito conjunto de acionamento axial.
10. Unidade de carga descartável, de acordo com a reivindica-ção 9, em que o dita alavanca de bigorna é acoplado de modo móvel no ditoconjunto de acionamento axial tal que o dita alavanca de bigorna pode semover.axialmente com relação ao dito conjunto de acionamento axial e pivo-tar com relação ao dito conjunto de acionamento axial.
11. Unidade de carga descartável para fixação em um aparelhode grampeamento cirúrgico, a dita unidade de carga descartável compreen-dendo:um cartucho de grampos suportado em um transportador que éacoplável de modo operável no aparelho de grampeamento cirúrgico;uma parte de bigorna pivotantemente acoplada ao dito transpor-tador para deslocamento pivotável seletivo entre as posições aberta e fe-chada com relação ao dito cartucho de grampos, a dita parte de bigorna ten-do uma fenda de bigorna axial através da mesma;uma cobertura de bigorna fixada na dita parte de bigorna paradefinir uma cavidade de bigorna entre as mesmas;um conjunto de acionamento axial que tem uma parte de extre-midade distai construída para mover em uma direção distai através de umafenda de cartucho no dito cartucho de grampos e a dita fenda de bigorna emresposta a um movimento de acionamento conferido ao dito conjunto de a-cionamento axial a partir do aparelho de grampeamento cirúrgico e tambémmover em uma direção proximal através da dita fenda de cartucho e a ditafenda de bigorna em resposta a um movimento de retração aplicado ao ditoconjunto de acionamento axial a partir do aparelho de grampeamento cirúr-gico;um pino de bigoma transverso suportado de modo destacávelem uma parte de flange de retenção do dito conjunto de acionamento axialtal que o dito pino de bigoma é recebido de modo móvel na dita cavidade debigoma e atravessa a dita fenda de bigorna; eum elemento de desengate fornecido no dito pino de bigornatransverso orientado para engatar pelo menos uma parte de pelo menosuma da dita cobertura de bigorna e da dita parte de bigorna quando um mo-vimento de retração é aplicado ao dito conjunto de acionamento axial inde-pendente de onde a dita parte de extremidade distai do dito conjunto de a-cionamento axial está localizada dentro da dita fenda do cartucho para des-se modo fazer o dito pino de bigorna ser desacoplado do dito conjunto deacionamento axial.
12. Unidade de carga descartável, de acordo com a reivindica-ção 11, em que o dito elemento de desengate compreende uma presilha depino fixável no dito pino de bigorna e tendo pelo menos uma parte de presi-lha superior orientada para engatar por retenção uma parte da dita coberturade bigorna e pelo menos uma parte de presilha inferior orientada para enga-tar por retenção uma parte da dita parte de bigorna.
13. Unidade de carga descartável, de acordo com a reivindica-ção 11, em que o dito pino de bigorna é retido dentro da dita cavidade debigorna quando o dito pino de bigorna foi destacado do dito conjunto de a-cionamento axial.
14. Unidade de carga descartável, de acordo com a reivindica-ção 11, em que o dito pino de bigorna é suportado em uma fenda de extre-midade aberta na dita parte de flange de retenção do dito conjunto de acio-namento axial.
15. Unidade de carga descartável, de acordo com a reivindica-ção 11, em que o dito pino de bigorna é suportado em uma fenda na ditaparte de flange de retenção do dito conjunto de acionamento axial e em quea dita parte de flange de retenção tem uma parte rebaixada formada namesma adjacente à dita fenda para permitir que uma parte de fundo da ditaparte de flange de retenção que forma uma parte da dita fenda, se mova pa-ra longe de uma parte superior da dita fenda para permitir que o dito pino debigorna seja removido da dita fenda pela interação do dito elemento de de-sengate com pelo menos uma da dita cobertura de bigorna e a dita parte debigorna na aplicação do movimento de retração no dito conjunto de aciona-mento axial.
16. Unidade de carga descartável, de acordo com a reivindica-ção 11, em que o dito pino de bigorna é suportado em uma fenda na ditaparte de flange de retenção do dito conjunto de acionamento axial e em quea dita fenda é formada por uma aba curvável formada na dita parte de flangede retenção tal que na interação do dito elemento de desengate com pelomenos-uma dita cobertura de bigorna-e a dita parte de bigorna, o dito pinode bigorna faz a aba curvável se mover para uma posição em que o dito pinode bigorna pode ser destacado da dita parte de flange de retenção.
17. Unidade de carga descartável, de acordo com a reivindica-ção 11, em que o dito pino de bigorna tem pelo menos uma aba de reforçoformada no mesmo.
18. Aparelho de grampeamento cirúrgico, compreendendo:um conjunto de manipulo;um corpo alongado acoplado de modo operável no dito conjuntode manipulo;uma unidade de carga descartável operavelmente acoplada aodito corpo alongado, a dita unidade de carga descartável compreendendo:um transportador operavelmente acoplável a uma extremidadedistai do dito corpo alongado;um cartucho de grampos suportado no dito transportador;um conjunto de bigorna acoplado de modo móvel no dito trans-portador para deslocamento móvel seletivo entre as posições aberta e fe-chada com relação ao dito cartucho de grampos;um conjunto de acionamento axial que tem uma parte de extre-midade distai construída para mover em uma direção distai através de umafenda no dito cartucho de grampos em resposta a um movimento de acio-namento conferido no dito conjunto de acionamento axial do dito conjunto demanipulo e também mover em uma direção proximal através da dita fendano dito cartucho de grampos em resposta a um movimento de retração apli-cado no dito conjunto de acionamento axial a partir do dito conjunto de ma-nípulo, a dita parte de extremidade distai do dito conjunto de acionamentoaxial configurada para conferir uma força de fechamento no dito conjunto debigorna quando o dito conjunto de acionamento axial é acionada na dita di-reção distai na dita fenda no dito cartucho de grampos;um par de barras de suporte suportado de modo móvel dentrode uma fenda axial no dito conjunto de bigorna, as ditas barras de suporteespaçadas uma da outra para permitir que a dita parte de extremidade distaido dito conjunto de acionamento axial passe de modo móvel entre as mes-mas, as ditas barras de suporte seletivamente móveis entre a dita primeiraposição em que as ditas barras de suporte suportam um pino de bigorna fi-xado na dita parte de extremidade distai do dito conjunto de acionamentoaxial e posições retraídas em que o dito pino de bigorna não é suportadopelas ditas barras de suporte e é permitido desengatar o conjunto de bigor-na; euma articulação de conexão acoplada nas ditas barras de suporte;euma articulação de retração suportada de modo operável no ditocorpo alongado e configurada para engatar de modo operável na dita articu-lação de conexão; eum botão atuador suportado de modo operável no dito corpo a-longado e interagindo com a dita articulação de retração para permitir quemovimentos de retração sejam aplicados na dita articulação de retração e adita articulação de conexão na atuação do dito botão atuador.
19. Aparelho de grampeamento cirúrgico, de acordo com a rei-vindicação 18, ainda compreendendo:uma parte de alojamento acoplável de modo operável na ditaextremidade distai do dito corpo alongado; euma junta de articulação acoplada de modo operável no ditotransportador e na dita parte de alojamento.
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-
2008
- 2008-02-14 US US12/031,539 patent/US7857185B2/en active Active
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2009
- 2009-02-13 RU RU2009105058/14A patent/RU2492819C2/ru not_active IP Right Cessation
- 2009-02-13 BR BRPI0903067A patent/BRPI0903067B8/pt active IP Right Grant
- 2009-02-13 JP JP2009030899A patent/JP5430965B2/ja not_active Expired - Fee Related
- 2009-02-13 EP EP09250385A patent/EP2090247B1/en active Active
- 2009-02-16 CN CN2009100078147A patent/CN101584596B/zh active Active
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2010
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Also Published As
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RU2009105058A (ru) | 2010-08-20 |
US7857185B2 (en) | 2010-12-28 |
EP2090247A1 (en) | 2009-08-19 |
HK1135872A1 (en) | 2010-06-18 |
US20090206134A1 (en) | 2009-08-20 |
BRPI0903067B1 (pt) | 2019-08-13 |
JP5430965B2 (ja) | 2014-03-05 |
CN101584596A (zh) | 2009-11-25 |
BRPI0903067B8 (pt) | 2021-06-22 |
RU2492819C2 (ru) | 2013-09-20 |
EP2090247B1 (en) | 2012-09-05 |
CN101584596B (zh) | 2012-07-04 |
JP2009189826A (ja) | 2009-08-27 |
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