IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0464177
(2009-05-12)
|
| 등록번호 |
US-8728099
(2014-05-20)
|
|
발명자
/ 주소 |
- Cohn, Simon
- Cardinale, Michael
- Fuchs, Richard P.
- Daniel, Matthew David
- Jarrett, Jeremy David
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
44 인용 특허 :
62 |
초록
▼
A firing system for an applicator instrument adapted to dispense surgical fasteners includes a housing, an elongated shaft extending from the housing, a firing rod disposed within the elongated shaft, a firing rod release engageable with the firing rod for preventing distal movement of the firing ro
A firing system for an applicator instrument adapted to dispense surgical fasteners includes a housing, an elongated shaft extending from the housing, a firing rod disposed within the elongated shaft, a firing rod release engageable with the firing rod for preventing distal movement of the firing rod during at least one stage of a firing cycle, a trigger mounted to the housing, and a firing spring having a first end connected with the firing rod and a second end adapted for being sequentially coupled and decoupled from the trigger during the firing cycle. The firing cycle includes an initial stage in which the trigger is open and decoupled from the energy storing element, and the firing spring is at least partially compressed, and a piloting stage during which the firing rod release is disengaged from the firing rod for enabling distal movement of the firing rod.
대표청구항
▼
1. A firing system for an applicator instrument adapted to dispense surgical fasteners comprising: a housing;an elongated shaft extending from said housing;a firing rod disposed within said elongated shaft;a firing rod release engageable with said firing rod for preventing distal movement of said fi
1. A firing system for an applicator instrument adapted to dispense surgical fasteners comprising: a housing;an elongated shaft extending from said housing;a firing rod disposed within said elongated shaft;a firing rod release engageable with said firing rod for preventing distal movement of said firing rod during at least one stage of a firing cycle;a trigger mounted to said housing;a firing spring adapted to transfer energy to said firing rod for advancing said firing rod distally toward the distal end of said elongated shaft, said firing spring having a first end connected with said firing rod and a second end adapted for being sequentially coupled and decoupled from said trigger during said firing cycle;wherein said firing cycle comprises an initial stage in which said trigger is open and decoupled from said firing spring, and said firing spring is at least partially compressed, anda piloting stage during which said firing rod release is disengaged from said firing rod for enabling distal movement of said firing rod, and said trigger is compressible a first distance for coupling said trigger with said firing spring for moving said at least partially compressed firing spring distally, which, in turn, moves said firing rod distally at a first rate of speed that is proportional to the movement of said trigger. 2. The firing system as claimed in claim 1, wherein said firing cycle further comprises: after the piloting stage, an energy storing stage in which said firing rod release engages said firing rod for preventing distal movement of said firing rod, and said trigger is further movable a second distance for further compressing and storing energy in said firing spring. 3. The firing system as claimed in claim 2, wherein said firing cycle further comprises: after the energy storing stage, a firing stage in which said firing rod release automatically disengages from said firing rod so that said firing rod is free to move toward the distal end of said elongated shaft and said compressed firing spring transfers the energy stored therein to said firing rod for rapidly advancing said firing rod toward the distal end of said elongated shaft at a second rate of speed that is greater than both the first rate of speed and the movement of said trigger. 4. The firing system as claimed in claim 3, wherein said firing cycle further comprises: after the firing stage, a decoupling stage during which said trigger is further compressible a third distance for decoupling said trigger from said firing spring whereupon said firing rod is free to move toward the proximal end of said elongated shaft. 5. The firing system as claimed in claim 4, wherein said firing system further comprises an advancer disposed within said elongated shaft and being moveable in proximal and distal directions along said elongated shaft, and wherein said firing cycle further comprises: after the firing stage, a surgical fastener advancing stage during which said trigger is further compressible a fourth distance for moving said advancer toward the distal end of said elongated shaft for moving surgical fasteners toward the distal end of said elongated shaft. 6. The firing system as claimed in claim 5, wherein said firing cycle further comprises: after the surgical fastener advancing stage, a retraction stage during which said trigger moves from a compressed position to the open position of the initial stage for moving said advancer in a proximal direction. 7. The firing system as claimed in claim 6, further comprising a spring block disposed within said housing and engageable with a proximal end of said firing spring, wherein said spring block is adapted to move proximally and distally along the longitudinal axis defined by said elongated shaft. 8. The firing system as claimed in claim 7, wherein during the energy storing stage, said trigger is coupled with said spring block for moving said spring block distally, which, in turn, further compresses said firing spring. 9. The firing system as claimed in claim 8, further comprising a primary latch coupled with said trigger and being adapted to couple said trigger with said spring block during the piloting, energy storing, and firing stages, and decouple said trigger from said spring block during the decoupling, surgical fastener advancing, and retraction stages. 10. The firing system as claimed in claim 9, wherein at the beginning of the firing stage said spring block contacts said firing rod release for disengaging said firing rod release from said firing rod so that said firing rod may move distally. 11. A firing system for a surgical fastener applicator instrument including a housing and an elongated shaft extending from said housing, said firing system comprising: a firing rod disposed within said elongated shaft and being movable proximally and distally along a longitudinal axis;a firing spring block disposed within said housing and being adapted to move in proximal and distal directions along the longitudinal axis;a firing spring having a distal end connected with said firing rod and a proximal end engaging said firing spring block; anda trigger mounted to said housing for driving said firing system, said trigger including a primary latch for sequentially coupling and decoupling said trigger from said firing spring block during a firing cycle, wherein said firing spring is adapted to advance a distal end of said firing rod beyond a distal end of said applicator instrument for shooting a surgical fastener from the distal end of said elongated shaft. 12. The firing system as claimed in claim 11, wherein said firing cycle comprises: an initial stage in which said trigger is open, said trigger is decoupled from said firing spring block, and said firing spring is at least partially compressed; anda piloting stage in which said firing rod is free to move toward the distal end of said elongated shaft, and said trigger is compressible a first distance for coupling said trigger with said firing spring block for moving said at least partially compressed firing spring distally, which, in turn, moves said firing rod distally at a first rate of speed that is proportional to the movement of said trigger. 13. The firing system as claimed in claim 12, wherein the compression level of said firing spring remains unchanged during the piloting stage. 14. The firing system as claimed in claim 12, wherein said firing cycle further comprises: after the piloting stage, an energy storing stage in which said trigger is further compressible a second distance for further compressing and storing energy in said firing spring while said firing rod release engages said firing rod for preventing distal movement of said firing rod. 15. The firing system as claimed in claim 14, wherein said firing cycle further comprises: after the energy storing stage, a firing stage in which said firing rod release automatically disengages from said firing rod so that said firing rod is free to move toward the distal end of said elongated shaft and said firing spring transfers the energy stored therein to said firing rod for rapidly advancing said firing rod toward the distal end of said elongated shaft at a second rate of speed that is greater than the first rate of speed. 16. The firing system as claimed in claim 15, wherein said firing cycle further comprises: after the firing stage, a decoupling stage during which said trigger is further compressible a third distance for decoupling said trigger from said firing spring and said firing rod so that said firing rod may move proximally. 17. The firing system as claimed in claim 16, wherein said firing system further comprises an advancer disposed within said elongated shaft and being moveable between the proximal and distal ends of said elongated shaft for moving surgical fasteners toward the distal end of said elongated shaft, and wherein said firing cycle further comprises: after the firing stage, a surgical fastener advancing stage during which said trigger is further compressible a fourth distance for moving said advancer toward the distal end of said elongated shaft so as to move said surgical fasteners toward the distal end of said elongated shaft. 18. The firing system as claimed in claim 17, wherein during the energy storing stage, said trigger is coupled with said firing spring block for moving said firing spring block distally, which, in turn, compresses said firing spring. 19. The firing system as claimed in claim 18, wherein said primary latch is adapted to couple said trigger with said spring block during the piloting, energy storing, and firing stages, and decouple said trigger from said spring block during the decoupling, surgical fastener advancing, and retraction stages. 20. A firing system for an applicator instrument adapted to dispense surgical fasteners comprising: a housing;an elongated shaft extending from said housing;a firing rod disposed within said elongated shaft;a firing rod release engageable with said firing rod for preventing distal movement of said firing rod during at least one stage of a firing cycle, wherein said firing rod release automatically disengages from said firing rod during a firing stage of said firing cycle;a trigger mounted to said housing;a firing spring adapted to transfer energy to said firing rod for advancing said firing rod distally toward the distal end of said elongated shaft, said firing spring having a first end connected with said firing rod and a second end adapted for being sequentially coupled and decoupled from said trigger during said firing cycle;wherein said firing cycle comprises an initial stage in which said trigger is open and decoupled from said firing spring, and said firing spring is at least partially compressed, anda piloting stage during which said firing rod release is disengaged from said firing rod for enabling distal movement of said firing rod, and said trigger is compressible a first distance for coupling said trigger with said firing spring for moving said at least partially compressed firing spring distally, which, in turn, moves said firing rod distally at a first rate of speed that is proportional to the movement of said trigger.
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