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-0942236 (2001-08-29) |
발명자 / 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 1038 인용 특허 : 127 |
A hydraulically actuated medical instrument includes an elongated shaft having proximal and distal ends, a hydraulically actuated end effector at the distal end of the shaft and a fluid flow path extending through the shaft to the end effector. The end effector may be directly manually operated by w
A hydraulically actuated medical instrument includes an elongated shaft having proximal and distal ends, a hydraulically actuated end effector at the distal end of the shaft and a fluid flow path extending through the shaft to the end effector. The end effector may be directly manually operated by way of a handle located at the proximal end of the shaft or remotely, for example, via robotic controller. Articulation joints may be provided along the shaft, between the shaft and end effector or handle, or elsewhere. The hydraulic actuation of the present invention permits multiple axis instrument articulation, miniaturization and simplified instrument fabrication.
1. A hydraulically actuated medical instrument, comprising:a handle portion;an end effector carried by the handle portion;the end effector including first and second hydraulic actuators, responsive to changes in hydraulic actuation pressure;a first hydraulic fluid flow path and a second hydraulic fl
1. A hydraulically actuated medical instrument, comprising:a handle portion;an end effector carried by the handle portion;the end effector including first and second hydraulic actuators, responsive to changes in hydraulic actuation pressure;a first hydraulic fluid flow path and a second hydraulic fluid flow path communicating between the handle portion and the first and second hydraulic actuators, respectively; and,the handle portion including a hydraulic cylinder block including first and second cylinders communicating, respectively, with the first and second flow paths, and first and second pistons slidably movable with respect to the first and second cylinders, respectively;first and second members movably mounted and engageable, respectively, with the first and second pistons for moving the pistons relative to the cylinders to chance the pressure of hydraulic fluid in the flow paths the first piston comprises a plurality of gear teeth, and the first engageable member includes a plurality of gear teeth engageable with the gear teeth of the first piston. 2. The medical instrument of claim 1, wherein the first engageable member is biased to a position of lower hydraulic pressure. 3. The medical instrument of claim 2, wherein the handle portion further comprises a release tab operable to engage the first engageable member to hold it in an increased pressure state. 4. The medical instrument of claim 1, wherein the end effector includes first and second relatively movable jaws. 5. The medical instrument of claim 4, wherein the first engageable member is adapted to move the first and second jaws toward and away from one another. 6. The medical instrument of claim 1, wherein the second piston further comprises a plurality of gear teeth and the second engageable member includes a plurality of gear teeth engageable with the gear teeth of the second piston. 7. The medical instrument of claim 6, wherein the handle portion further comprises a safety latch engageable with the second engageable member to hold the second engageable member in a lower pressure position. 8. The medical instrument of claim 6, wherein the end effector includes a first jaw, a second jaw, a plurality of staples carried by the first jaw and a staple anvil carried by the second jaw. 9. The medical instrument of claim 8, wherein the second engageable member is adapted to force the staples from the first jaw and against the anvil of the second jaw. 10. The medical instrument of claim 8, wherein the plurality of staples are contained in a supply cartridge removably carried by the first jaw. 11. The medical instrument of claim 8, wherein the first jaw includes a moveable staple ejector and the second actuator includes a linearly extensible balloon engageable with the staple ejector to force the staples from the first jaw upon increase of hydraulic pressure in the balloon. 12. The medical instrument of claim 1, wherein:the first engageable member includes a moveable lever pivotally mounted and engageable with the first piston for moving the first piston relative to the cylinder block to increase the pressure of the hydraulic fluid in the first fluid flow path; and,the second engageable member includes a trigger pivotally mounted and engageable with the second piston for moving the second piston relative to the cylinder block to increase the pressure of the hydraulic fluid in the second fluid flow path. 13. The medical instrument of claim 12, wherein the plurality of gear teeth of the first piston is engageable with the lever and the second piston further comprises a plurality of gears engageable with the trigger. 14. The medical instrument of claim 12, wherein the lever is biased to a position in which the first fluid flow path is at a reduced hydraulic pressure state. 15. The medical instrument of claim 12, wherein the handle portion further comprises a release tab operable to engage the lever when it is in an increased pressure state. 16. The medical instrument of c laim 12, wherein the handle portion further comprises a safety latch engageable with the trigger to hold the trigger in a reduced pressure position. 17. The medical instrument of claim 12, wherein the end effector includes first and second relatively movable jaws. 18. The medical instrument of claim 12, wherein the lever is adapted to move the first and second jaws toward and away from one another. 19. The medical instrument of claim 12, wherein the end effector includes a plurality of staples carried by the first jaw and a staple anvil carried by the second jaw. 20. The medical instrument of claim 19, wherein the trigger is adapted to force the staples from the first jaw and against the anvil of the second jaw. 21. The medical instrument of claim 1, further comprising an articulation joint disposed between the end effector and the handle portion to permit articulation between the end effector and the handle portion. 22. The medical instrument of claim 21, wherein at least a portion of each of the first and second fluid flow paths are flexible. 23. The medical instrument of claim 22, wherein the first and second fluid flow paths comprise a flexible portion in proximity to the articulation joint. 24. The medical instrument of claim 21, wherein the articulation joint is adapted to permit 360° of articulation. 25. The medial instrument of claim 24, wherein the articulation joint is a ball and socket type joint. 26. The medical instrument of claim 21, wherein the articulation joint is adapted to permit lateral articulation within a plane. 27. The medical instrument of claim 26, wherein the articulation joint is a hinge type articulation joint. 28. The medical instrument of claim 21, further comprising a control wire extending between the handle portion and the articulation joint to control articulation of the articulation joint. 29. A hydraulic actuation handle for a hydraulically actuated medical instrument, comprisingfirst and second fluid flow paths;first and second hydraulic pressure sourcescommunicating with the first and second fluid flow paths, respectively, for changing the hydraulic pressure within each of the first and second flow paths, the first and second pressure sources comprising a hydraulic cylinder block including first and second cylinders communicating, respectively, with the first and second fluid flow paths and first and second pistons slidably movable with respect to the first and second cylinders, respectively;means for selectively actuating said first or second hydraulic pressure sources by moving one or more of the pistons; andwherein at least one of the first and second pistons further comprises a plurality of gear teeth and the means for selectively actuating includes a plurality of gear teeth engageable with the gear teeth of the piston. 30. The handle of claim 29, wherein the means for selectively actuating is biased to a position of lower hydraulic pressure.
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