Circular surgical fastening devices with tissue acquisition arrangements
First Claim
1. A surgical instrument, comprising:
- an elongate shaft assembly operably supporting a circular surgical staple cartridge in a distal end thereof;
a plurality of arcuate tissue acquisition members pivotally attached to said elongate shaft assembly and configured to be selectively radially deployable from a first position wherein said plurality of arcuate tissue acquisition members cooperate to form a continuous ring defining a continuous outer ring diameter and a second deployed position wherein each said arcuate tissue acquisition member extends radially outward from said elongate shaft assembly;
means for selectively deploying said plurality of arcuate tissue acquisition members between said first position and said second deployed position;
a tissue cutting member comprising two diametrically opposed ends forming a plurality of tissue cutting edges, said tissue cutting member comprising a tissue cutting diameter that does not exceed said continuous outer ring diameter formed by said plurality of arcuate tissue acquisition members when said plurality of arcuate tissue acquisition members are in said first position; and
means for selectively rotating said tissue cutting member relative to said plurality of arcuate tissue acquisition members.
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Accused Products
Abstract
A surgical instrument comprising an elongate shaft assembly operably supporting a circular surgical staple cartridge in a distal end thereof and a plurality of arcuate tissue acquisition members pivotally attached to the elongate shaft assembly and configured to be selectively radially deployable from a first position wherein the plurality of arcuate tissue acquisition members cooperate to form a continuous ring defining a continuous outer ring diameter and a second deployed position wherein each arcuate tissue acquisition member extends radially outward from the elongate shaft assembly is disclosed. The surgical instrument further comprises means for selectively deploying the plurality of arcuate tissue acquisition members between the first position and the second deployed position, a tissue cutting member comprising two diametrically opposed ends forming a plurality of tissue cutting edges, and means for selectively rotating the tissue cutting member relative to the plurality of arcuate tissue acquisition members.
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Citations
19 Claims
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1. A surgical instrument, comprising:
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an elongate shaft assembly operably supporting a circular surgical staple cartridge in a distal end thereof; a plurality of arcuate tissue acquisition members pivotally attached to said elongate shaft assembly and configured to be selectively radially deployable from a first position wherein said plurality of arcuate tissue acquisition members cooperate to form a continuous ring defining a continuous outer ring diameter and a second deployed position wherein each said arcuate tissue acquisition member extends radially outward from said elongate shaft assembly; means for selectively deploying said plurality of arcuate tissue acquisition members between said first position and said second deployed position; a tissue cutting member comprising two diametrically opposed ends forming a plurality of tissue cutting edges, said tissue cutting member comprising a tissue cutting diameter that does not exceed said continuous outer ring diameter formed by said plurality of arcuate tissue acquisition members when said plurality of arcuate tissue acquisition members are in said first position; and means for selectively rotating said tissue cutting member relative to said plurality of arcuate tissue acquisition members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A circular surgical fastening instrument, comprising:
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an elongate shaft assembly operably supporting a circular surgical fastener cartridge in a distal end thereof; a plurality of arcuate tissue acquisition members pivotally attached to said elongate shaft assembly and configured to be selectively radially deployable from a first position wherein said plurality of arcuate tissue acquisition members cooperate to form a continuous ring defining a continuous outer ring diameter and a second deployed position wherein each said arcuate tissue acquisition member extends radially outward from said elongate shaft assembly; a rotary drive shaft protruding through said circular surgical fastener cartridge and operably interfacing with said plurality of arcuate tissue acquisition members for applying rotary deployment motions thereto; a tissue cutting member comprising two diametrically opposed ends forming a plurality of tissue cutting edges, said tissue cutting member comprising a tissue cutting diameter that does not exceed said continuous outer ring diameter formed by said plurality of arcuate tissue acquisition members when said plurality of arcuate tissue acquisition members are in said first position; an anvil shaft assembly supported for selective axial travel relative to said rotary drive shaft; an anvil configured to be removably attached to a distal end of said anvil shaft assembly such that when attached thereto, said anvil is in confronting relationship relative to said circular surgical fastener cartridge; and means for selectively deploying fasteners from said circular surgical fastener cartridge. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification