A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
128/122
A61B 17/10 (2006.01) A61B 17/068 (2006.01)
Patent
CA 1323542
ZS11 ABSTRACT METHOD AND APPARATUS FOR STORING, DISPENSING AND APPLYING SURGICAL STAPLES A method and apparatus for storing, dispensing, and applying surgical staples includes a pistol-like tool having a handle portion with a manually movable trigger lever, and a rotatable barrel portion with a staple track for storing staples in parallel, stacked, column fashion, the axis of the column extending generally colinearly with the barrel axis. The staples are urged distally in the track, and the distal track portion is curved out of axial alignment so that the distal staples are urged into points-first alignment. A form tool is slidably disposed in the barrel portion and adapted to advance and urge the distal- most staple against an anvil tool to crimp the staple. The form tool includes a drag spring which engages the distal-most staple in the staple track as the form tool retracts after a crimping cycle, pulling the distal-most staple from the track into a dispensing position for the next dispensing cycle. A drive block connected to the form tool and the trigger lever is mounted in the apparatus for reciprocal translation along a coaxial drive track. The drive block includes a pawl engaging ratchet teeth in the drive track, so that the block is urged distally by trigger actuation and proximal translation is prevented. ZS11 The pawl includes a release slide actuated by translation of the block to the distal end of the drive track, coincident with full distal translation of the form tool and crimping of the dispensed staple, the release slide disengaging the pawl and allowing the drive block to return proximally.
587174
Peters Ronald Lee
Peters Rudolph
Taylor William
Osler Hoskin & Harcourt Llp
Pilling Weck Incorporated
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