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 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0270853 (2014-05-06) |
등록번호 | US-9861366 (2018-01-09) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 0 인용 특허 : 1028 |
An end effector includes first and second jaws, a drive screw, a lead screw nut, and a drive beam. The drive screw is disposed within the first jaw. The lead screw nut defines a threaded bore that receives the drive screw. The lead screw nut is advanced along the drive screw as the drive screw is ro
An end effector includes first and second jaws, a drive screw, a lead screw nut, and a drive beam. The drive screw is disposed within the first jaw. The lead screw nut defines a threaded bore that receives the drive screw. The lead screw nut is advanced along the drive screw as the drive screw is rotated in a first direction and is retracted along the drive screw as the drive screw rotates in a second direction. The drive beam is releasably coupled to the lead screw nut when the lead screw nut is in a retracted position. As the lead screw nut is advanced the drive beam is pulled by the lead screw nut. The drive beam is decoupled from the lead screw nut as the lead screw nut is advanced such that the lead screw nut is advanced relative to the drive beam.
1. An end effector comprising: first and second jaws moveable relative to one another;a drive screw disposed within the first jaw and defining a longitudinal axis;a lead screw nut defining a threaded bore, the threaded bore receiving the drive screw, the lead screw nut is advanced along the drive sc
1. An end effector comprising: first and second jaws moveable relative to one another;a drive screw disposed within the first jaw and defining a longitudinal axis;a lead screw nut defining a threaded bore, the threaded bore receiving the drive screw, the lead screw nut is advanced along the drive screw as the drive screw is rotated in a first direction and is retracted along the drive screw as the drive screw is rotated in a second direction opposite the first direction; anda drive beam releasably coupled to the lead screw nut when the lead screw nut is in a retracted position, the drive beam being pulled by the lead screw nut as the lead screw nut is advanced towards a first advanced position, the drive beam decoupling from the lead screw nut as the lead screw nut is advanced to the first advanced position such that the lead screw nut is advanced relative to the drive beam from the first advanced position to a second advanced position. 2. The end effector of claim 1, wherein the drive beam defines a passage that receives the drive screw therethrough. 3. The end effector of claim 1 further comprising a sled defining a channel, the channel receiving the drive screw and configured to guide the sled along the drive screw. 4. The end effector of claim 3, wherein in the retracted position of the lead screw nut, the lead screw nut is spaced apart from and positioned proximal to the sled. 5. The end effector of claim 3, wherein the lead screw nut engages a proximal surface of the sled at the first advanced position, the lead screw nut pushing the sled distally as the lead screw nut is advanced from the first advanced position towards the second advanced position. 6. The end effector of claim 5, wherein the first jaw includes a cartridge assembly including staples disposed therein and as the lead screw nut is advanced from the first advanced position towards the second advanced position the sled ejects the staples from within the cartridge assembly towards the second jaw. 7. The end effector of claim 6, wherein the cartridge assembly includes a staple pusher associated with each of the staples, the sled sequentially engaging the staple pushers to eject the staples from within the cartridge assembly. 8. The end effector of claim 5, wherein, when the lead screw nut is retracted to the first advanced position after pushing the sled, the sled remains stationary in a position between the first and second advanced positions. 9. The end effector of claim 8, wherein when the lead screw nut is retracted from the first advanced position towards the retracted position, the lead screw nut pushes the drive beam towards the retracted position and couples to the drive beam. 10. The end effector of claim 1 further comprising a latch including an elongated portion, the elongated portion having proximal and distal ends, the proximal end of the elongated portion pivotally coupled to the drive beam, the distal end of the elongated portion including a bridge, the bridge received within a notch defined by the lead screw nut when the lead screw nut is in the retracted position to couple the drive beam to the lead screw nut. 11. The end effector of claim 10, wherein when the lead screw nut is advanced towards the first advanced position the bridge is raised out of the notch to decouple the drive beam from the lead screw nut. 12. The end effector of claim 10, wherein when the lead screw nut is retracted from the first advanced position towards the retracted position, the bridge is lowered into the notch to couple the drive beam to the lead screw nut. 13. The end effector of claim 10 further comprising a cam member positioned adjacent the drive screw defining a cam slot, the cam slot having a first portion parallel to the longitudinal axis of the drive screw and a second portion extending distally from the first portion at an angle relative to and away from the longitudinal axis of the drive screw, wherein the distal end of the elongated portion includes a pin that is slidably received in the cam slot. 14. The end effector of claim 13, wherein the bridge is received in the notch when the pin is in the first portion of the cam slot and wherein the bridge is raised out of the notch as the pin slides distally along the second portion of the cam slot. 15. A surgical instrument comprising: a handle;a shaft extending distally from the handle; andan end effector supported at a distal end of the shaft, the end effector comprising: first and second jaws moveable relative to one another;a drive screw defining a longitudinal axis disposed within the first jaw;a lead screw nut defining a threaded bore, the threaded bore receiving the drive screw, the lead screw nut is advanced along the drive screw as the drive screw is rotated in a first direction and is retracted along the drive screw as the drive screw is rotated in a second direction opposite the first direction; anda drive beam releasably coupled to the lead screw nut when the lead screw nut is in a retracted position, the drive beam being pulled by the lead screw nut as the lead screw nut is advanced towards a first advanced position, the drive beam decoupling from the lead screw nut as the lead screw nut is advanced to the first advanced position such that the lead screw nut is advanced relative to the drive beam from the first advanced position to a second advanced position. 16. A method of ejecting staples from a cartridge assembly, the method comprising: providing an end effector including: a first jaw;a drive screw disposed within the first jaw and defining a longitudinal axis;a lead screw nut defining a threaded bore, the threaded bore receiving the drive screw; anda drive beam releasably coupled to the lead screw nut in a retracted position;coupling a cartridge assembly to the first jaw, the cartridge assembly including staples;advancing the lead screw nut towards a first advanced position by rotating the drive screw in a first direction, the drive beam pulled by the lead screw nut, the drive beam decoupling from the lead screw nut as the lead screw nut reaches the first advanced position; andadvancing the lead screw nut from the first advanced position towards a second advanced position, the drive beam remaining stationary, the lead screw nut pushing a sled through the cartridge assembly to sequentially eject the staples. 17. The method of claim 16, further comprising retracting the lead screw nut from the second advanced position towards the first advanced position by rotating the drive screw in a second direction opposite the first direction, the sled remaining stationary as the lead screw nut is retracted. 18. The method of claim 17, further comprising retracting the lead screw nut from the first advanced position towards a retracted position and the drive beam coupling to the lead screw nut as the lead screw nut is retracted from the first advanced position. 19. The method of claim 16, wherein decoupling the drive beam includes raising a bridge of a latch operatively associated with the drive beam out of a notch defined by the lead screw nut. 20. The method of claim 18, wherein coupling the drive beam to the lead screw nut includes lowering a bridge of a latch operatively associated with the drive beam into a notch defined by the lead screw nut. 21. A surgical end effector comprising: first and second jaws moveable relative to one another;a driver element disposed within the first jaw and defining a longitudinal axis, the driver element having a constant diameter between proximal and distal ends thereof, the driver element being a threaded member;an internally threaded nut threadably engaged with the driver element; anda drive member releasably coupled to the driver element, the drive member being pulled by the driver element towards a first advanced position and decoupling from the driver element upon reaching a predetermined position corresponding to a closed position of the first and second jaws, the surgical end effector including a sled for firing staples from the first jaw, the driver element moving the sled to fire staples after the drive member is decoupled from the driver element, the drive member having the shape of an I-beam, the drive member releasably coupled to the nut. 22. The surgical end effector according to claim 21, wherein the drive member is releasably coupled to the nut by a latch. 23. The surgical end effector according to claim 22, further comprising a cam for disengaging the latch. 24. The surgical end effector according to claim 21, wherein the nut is advanced along the driver element as the driver element is rotated in a first direction and is retracted along the driver element as the driver element is rotated in a second direction opposite the first direction.
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