Surgical stapler apparatus
First Claim
1. In a circular anastomosis surgical apparatus comprising a housing, a shaft extending from said housing, a fastener pusher assembly movably mounted in a distal end portion of said housing for movement between a retracted position within said housing and an extended position for expelling an annular array of fasteners therefrom, the improvement comprising a removable anvil and means for removing said anvil, said removing means comprising a button protruding from said anvil and being movable between a first engaged position and a second disengaged position, and latch means cooperating with said anvil and engaging said shaft, said button actuating said latch means.
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Accused Products
Abstract
The end-to-end anastomosis apparatus is provided with a mounting means which can receive a trocar for making holes in tissue and, subsequently, an anvil shaft for the mounting of an anvil assembly for stapling purposes. The anvil shaft is provided with splines which cooperate with splines on a shell liner within the housing of the apparatus to align the buckets on the anvil assembly with the staples in a cartridge secured in the apparatus. In addition, the anvil assembly is provided with a spring for locking of the anvil housing on the anvil shaft.
849 Citations
27 Claims
- 1. In a circular anastomosis surgical apparatus comprising a housing, a shaft extending from said housing, a fastener pusher assembly movably mounted in a distal end portion of said housing for movement between a retracted position within said housing and an extended position for expelling an annular array of fasteners therefrom, the improvement comprising a removable anvil and means for removing said anvil, said removing means comprising a button protruding from said anvil and being movable between a first engaged position and a second disengaged position, and latch means cooperating with said anvil and engaging said shaft, said button actuating said latch means.
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11. A surgical stapler apparatus comprising:
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a tubular housing; a shaft extending from said tubular housing; an anvil adapted to be removably connected to said shaft, said anvil having an annular array of buckets to form staples; means for engaging said shaft, said engaging means cooperating with means disposed on said shaft for receiving said engaging means; and means for releasing said engaging means, at least a portion of said releasing means being disposed on an outer surface of said anvil and movable between first and second positions. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A surgical stapler apparatus comprising:
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a tubular housing; a shaft extending from said tubular housing; an anvil removably connected to said shaft, said anvil having an annular array of buckets to form staples, and an opening in its outer surface; a locking member engaging a portion of said shaft; a recess formed in said shaft for receiving said locking member; and an actuator cooperating with said locking member and movable to release said anvil from said shaft, said actuator extending through said opening in said anvil. - View Dependent Claims (25, 26)
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Specification