Buttress fixation for a circular stapler
First Claim
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1. A circular stapling apparatus, comprising:
- an anvil assembly including an anvil member and a shaft;
a tubular body portion having a staple cartridge including a plurality of staple receiving slots defined in a tissue contacting surface of the staple cartridge, each of the plurality of staple receiving slots including a staple disposed therein, and at least one of the plurality of staple receiving slots includes a notch, the shaft of the anvil assembly being connectable to the tubular body portion so that the anvil assembly is movable toward and away from the tubular body portion, the staple cartridge including a staple pusher disposed therein, the staple pusher having a plurality of fingers for driving the staples out of the plurality of staple receiving slots, at least one of the fingers including a protrusion; and
a buttress material removably attached to the staple cartridge by at least one anchor releasably retained within the notch,the staple pusher being movable to move the protrusion into engagement with the anchor retained within the notch to push the anchor out from the notch.
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Abstract
A stapling apparatus has a buttress material removably attached to a staple cartridge of the stapling apparatus by at least one anchor releasable retained within a notch defined in the staple cartridge. The stapling apparatus has a staple pusher including a plurality of fingers for ejecting staples out of the staple cartridge, and at least one of the fingers includes a protrusion for pushing the at least one anchor out from the notch and releasing the buttress material.
1371 Citations
12 Claims
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1. A circular stapling apparatus, comprising:
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an anvil assembly including an anvil member and a shaft; a tubular body portion having a staple cartridge including a plurality of staple receiving slots defined in a tissue contacting surface of the staple cartridge, each of the plurality of staple receiving slots including a staple disposed therein, and at least one of the plurality of staple receiving slots includes a notch, the shaft of the anvil assembly being connectable to the tubular body portion so that the anvil assembly is movable toward and away from the tubular body portion, the staple cartridge including a staple pusher disposed therein, the staple pusher having a plurality of fingers for driving the staples out of the plurality of staple receiving slots, at least one of the fingers including a protrusion; and a buttress material removably attached to the staple cartridge by at least one anchor releasably retained within the notch, the staple pusher being movable to move the protrusion into engagement with the anchor retained within the notch to push the anchor out from the notch. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A stapling apparatus, comprising:
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a staple cartridge disposed within a distal end of a body portion, the staple cartridge including a plurality of staple receiving slots defined in a tissue contacting surface of the staple cartridge, at least one of the plurality of staple receiving slots including a notch, the staple cartridge including a staple disposed within each of the plurality of staple receiving slots, and a staple pusher disposed within the staple cartridge, the staple pusher including a plurality of fingers, at least one of the fingers including a protrusion; an anchor releasably retained within the notch; and a buttress removably attached to the tissue contacting surface of the staple cartridge by the anchor, the staple pusher being moveable to move the plurality of fingers into the plurality of staple receiving slots to eject the staples from the plurality of staple receiving slots, and the protrusion into engagement with the anchor retained within the notch to push the anchor out from the notch. - View Dependent Claims (9, 10, 11, 12)
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Specification