최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0231456 (2005-09-21) |
등록번호 | US-7407078 (2008-08-05) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 767 인용 특허 : 206 |
A surgical instrument for being endoscopically or laparoscopically inserted into a surgical site for simultaneous stapling and severing of tissue includes force adjusted spacing between an upper jaw (anvil) and a lower jaw (staple cartridge engaged to an elongate staple channel) so that the height o
A surgical instrument for being endoscopically or laparoscopically inserted into a surgical site for simultaneous stapling and severing of tissue includes force adjusted spacing between an upper jaw (anvil) and a lower jaw (staple cartridge engaged to an elongate staple channel) so that the height of staple formation corresponds to the thickness of the tissue, yet does not exceed the height range that may be accommodated by the length of the staples. In particular, resilient structures are formed into an E-beam firing bar that includes a cutting surface (knife) that severs tissue between a top pin that engages the anvil and a middle pin and lower foot that engage the lower jaw. The resilience responds to the force exerted by clamped tissue to vary the spacing.
What is claimed is: 1. A surgical instrument, comprising: a handle portion operable to produce a firing motion; an implement portion responsive to the firing motions from the handle portion, the implement portion comprising: an elongate staple channel coupled to the handle portion and including a c
What is claimed is: 1. A surgical instrument, comprising: a handle portion operable to produce a firing motion; an implement portion responsive to the firing motions from the handle portion, the implement portion comprising: an elongate staple channel coupled to the handle portion and including a channel slot, a staple cartridge having an upper surface and received in the elongate staple channel and containing a plurality of staples each having a staple length sized for forming a closed staple between a first height and a second height, a wedge member movably positioned in the implement portion to drive the plurality of staples of the staple cartridge; an anvil pivotally coupled to the elongate staple channel and including an anvil channel comprising a vertical slot inwardly open along a longitudinal axis of the anvil and comprising left and right rectangular prism-shaped recesses communicating with, bisected by, and transverse to the vertical slot, wherein said left and right rectangular prism-shaped recesses extend substantially along the longitudinal length of the vertical slot; a firing device including a distally presented cutting edge longitudinally received between the elongate staple channel and the vertical slot of the anvil channel of the anvil, an upper member comprised of left and right lateral upper pins sized to slidingly engage upper and lower inner surfaces of the left and right rectangular-shaped recesses of the anvil channel, a lower member engaging the channel slot, and a middle member operable to actuate the staple cartridge by distally translating the wedge member through the staple cartridge, the firing device positively engaging both the elongate staple channel and the anvil during longitudinal firing travel to provide spacing therebetween for staple formation, and wherein engagement of the firing device during firing maintains vertical spacing between the elongate staple channel and the anvil resisting both pinching due to an inadequate clamped tissue and partial opening due to an excessive amount of clamped tissue; and a resilient portion of the firing device allowing a height between the staple forming undersurface of the anvil and the upper surface of the staple cartridge to vary between the first and second heights of the closed staples in relation to the clamped tissue thickness. 2. The surgical instrument of claim 1, wherein the anvil forms an inwardly biased relation to the elongate staple channel configured to assist the firing device in affirmatively spacing between the anvil and elongate staple channel during actuation of the staple cartridge. 3. The surgical instrument of claim 2, further comprising a closure member operatively configured to longitudinally transfer the closure motion to the implement portion to inwardly bias distal ends of the anvil and the elongate staple channel to assist the firing device in affirmatively spacing the anvil and elongate staple channel during actuation of the staple cartridge. 4. The surgical instrument of claim 1, wherein the staple cartridge is a selected type of a plurality of staple cartridge types, each staple cartridge type characterized by a thickness selected for a desired spacing between the anvil and elongate staple channel and characterized by staples having a length suitable for the desired spacing. 5. The surgical instrument of claim 4, wherein the wedge member comprises a wedge sled having a plurality of connected camming wedges each having a preselected height configured for the selected type of staple cartridge, the middle member of the firing device oriented to abut each of the plurality of staple cartridge types. 6. A surgical instrument comprising: a handle portion operable to produce a firing motion and a closing motion; and an implement portion responsive to the firing motions from the handle portion and diametrically dimensioned for endo-surgical use, the implement portion comprising: a shaft coupled to the handle portion operable to separately transfer the firing motion and the closing motion, an elongate staple channel coupled to the shaft and including a channel slot and operatively configured to receive a staple cartridge having an upper surface, an anvil pivotally coupled to the elongate staple channel, responsive to the closing motion from the shaft, and including an anvil channel, and a firing device including a distally presented cutting edge longitudinally received between the elongate staple channel and the anvil, the firing device configured to affirmatively space the anvil from the elongate staple channel during longitudinal travel between the anvil and elongate staple channel, a resilient portion of the firing device allowing a height between a staple forming undersurface of the anvil and the upper surface of the staple cartridge to vary between the first and second heights in relation to the clamped tissue thickness, wherein the firing device is configured to affirmatively space the anvil from the elongate staple channel during longitudinal travel between the anvil and elongate staple channel by including an upper member having an upper surface and a lower surface that longitudinally slidingly engage the anvil. 7. The surgical instrument of claim 6, wherein the anvil includes a longitudinal slot having an upper surface and a lower surface that slidingly abut respectively the lower surface and upper surface of the upper member of the firing device. 8. The surgical instrument of claim 7, wherein the longitudinal slot comprises an internal longitudinal channel communicating with a narrowed vertical slot, and wherein the firing device translates in the narrowed vertical slot and includes an upper member having the upper and lower surfaces that reside within the internal longitudinal channel for affirmatively spacing the anvil from the elongate staple channel. 9. The surgical instrument of claim 6, wherein the firing device is configured to affirmatively space the anvil from the elongate staple channel during longitudinal travel between the anvil and elongate staple channel by including a lower portion having an upper surface and a lower surface that slidingly engage the elongate staple channel. 10. The surgical instrument of claim 9 wherein the lower portion of the firing device comprises a lower pin having the upper surface abutting the elongate staple channel and comprises a middle pin having the lower surface opposingly abutting the elongate staple channel. 11. The surgical instrument of claim 10, wherein the firing device further comprises an upper member having an upper surface and a lower surface that longitudinally slidingly engage the anvil. 12. The surgical instrument of claim 11, wherein the anvil includes an internal longitudinal slot having a narrowed vertical slot, and wherein the firing device translates in the narrowed vertical slot and includes an upper member having upper and lower surfaces that reside within the internal longitudinal slot for affirmatively spacing the anvil from the elongate staple channel. 13. The surgical instrument of claim 6, further comprising a staple cartridge engaged by the elongate staple channel and including a proximally opened slot for receiving the cutting edge of the firing device, the staple cartridge including a plurality of staples cammed upwardly by the distal longitudinal movement of the firing mechanism. 14. The surgical instrument of claim 13, wherein the staple cartridge further includes a plurality of drivers supporting the plurality of staples and a wedge sled responsive to the distal longitudinal movement of the firing mechanism to cam upwardly the drivers and thus form the plurality of staples against the anvil. 15. The surgical instrument of claim 13, wherein the anvil forms an inwardly biased relation to the elongate staple channel configured to assist the firing device in affirmatively spacing between the anvil and elongate staple channel during actuation of the staple cartridge. 16. The surgical instrument of claim 13, wherein the staple cartridge is a selected type of a plurality of staple cartridge types, each staple cartridge type characterized by a thickness selected for a desired spacing between the anvil and elongate staple channel and characterized by staples having a length suitable for the desired spacing. 17. The surgical instrument of claim 16, wherein the wedge sled comprises a plurality of connected camming wedges each having a preselected height configured for the selected type of staple cartridge, the middle member of the firing device oriented to abut each of the plurality of staple cartridge types.
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