Surgical stapling instrument with jaw clamping mechanism
First Claim
1. A surgical stapling instrument, comprising:
- first and second cooperating elongate jaw members, one of said jaw members including staple carrying means adapted to receive a plurality of staples arranged in at least one row, and said other jaw member including anvil means adapted to form said staples,pusher means for driving the staples from said staple carrying means into tissue gripped between said jaw members and forming the staples against said anvil means to produce at least one row of staples in the tissue,knife means for cutting the tissue gripped between said jaw members along a line adjacent to said row of staples,means for latching said jaw members together at an intermediate position therealong adjacent to said staple carrying means and said anvil means, andcam means mounted on one of said jaw members and engageable with said other jaw member at a position remoted from said latching means for moving said jaw members apart at said remote position to urge said staple carrying means and said anvil means together to resist the forces exerted thereon when the staples are formed.
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Accused Products
Abstract
A surgical stapling instrument suitable for performing a gastrointestinal anastomosis is provided. The stapling instrument incorporates a jaw clamping mechanism which applies clamping forces to its jaw members to resist the forces exerted on the anvil and staple cartridge carrying portions of the jaw members when the staples are formed. Preferably, the stapling instrument includes a pair of elongate jaw members, one of which supports a staple cartridge adapted to receive at least two laterally spaced longitudinal rows of staples, and the other provided with an anvil adapted to form the staples. A pusher bar and knife blade assembly is slidable longitudinally relative to the jaw members to sequentially drive the staples from the cartridge and form the staples against the anvil to produce a pair of laterally spaced rows in the tissue. The pusher bar and knife blade assembly includes a knife blade for cutting the tissue along a line between the longitudinal staple rows. A latching mechanism is provided for latching the jaw members together at an intermediate position therealong adjacent to the staple cartridge and the anvil. In addition, a cam mechanism is provided for urging the jaw members apart at a position remote from the latching mechanism to resist the forces exerted on the staple cartridge and anvil when the pusher bar and knife blade assembly is actuated to staple and cut the tissue gripped between the jaw members.
1635 Citations
22 Claims
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1. A surgical stapling instrument, comprising:
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first and second cooperating elongate jaw members, one of said jaw members including staple carrying means adapted to receive a plurality of staples arranged in at least one row, and said other jaw member including anvil means adapted to form said staples, pusher means for driving the staples from said staple carrying means into tissue gripped between said jaw members and forming the staples against said anvil means to produce at least one row of staples in the tissue, knife means for cutting the tissue gripped between said jaw members along a line adjacent to said row of staples, means for latching said jaw members together at an intermediate position therealong adjacent to said staple carrying means and said anvil means, and cam means mounted on one of said jaw members and engageable with said other jaw member at a position remoted from said latching means for moving said jaw members apart at said remote position to urge said staple carrying means and said anvil means together to resist the forces exerted thereon when the staples are formed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A surgical stapling instrument, comprising:
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first and second cooperating elongate jaw members, one of said jaw members including a staple cartridge mounted at a front portion of said jaw member and adapted to receive at least two laterally spaced longitudinal rows of staples, and said other jaw member including an anvil mounted at a front portion of said jaw member and adapted to form said staples, a pusher bar and knife assembly slidable longitudinally relative to said elongate jaw members, said assembly including pusher means for driving the staples from said staple cartridge into tissue gripped between said jaw members and forming the staples against said anvil to produce a pair of laterally spaced staple rows in the tissue, and knife means for cutting the tissue gripped between said jaw members along a line between said staple rows, means for latching said jaw members together at an intermediate position therealong adjacent to said staple cartridge and said anvil, and cam means mounted on one of said jaw members and engageable with said other jaw member at a position remote from said latching means for moving said rear portions of said jaw members apart to urge said staple carrying means and said anvil means together to resist the forces exerted thereon when the staples are formed. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A surgical stapling instrument, comprising:
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first and second cooperating elongate jaw members, one of said jaw members including staple carrying means adapted to receive a plurality of staples arranged in at least one row, and said other jaw member including anvil means adapted to form said staples, pusher means for driving the staples from said staple carrying means into tissue gripped between said jaw members and forming the staples against said anvil means to produce at least one row of staples in the tissue, means for latching said jaw members together with the tissue located between said staple carrying means and said anvil means, and cam means operable after said jaw members are latched together for urging said jaw members apart at a position remote from said latching means to urge said staple carrying means and said anvil means together during the formation of said staples.
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22. A surgical stapling instrument, comprising:
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first and second cooperating elongate jaw members, one of said jaw members including a staple cartridge mounted at a front portion of said jaw member and adapted to receive at least two laterally spaced longitudinal rows of staples, and said other jaw member including an anvil mounted at a front portion of said jaw member and adapted to form said staples, a pusher bar and knife assembly slidable longitudinally relative to said elongate jaw members, said assembly including pusher means for driving the staples from said staple cartridge into tissue gripped between said jaw members and forming the staples against said anvil to produce a pair of laterally spaced staple rows in the tissue, and knife means for cutting the tissue gripped between said jaw members along a line between said staple rows, means for latching said jaw members together with the tissue located between said staple cartridge and said anvil, and cam means operable after said jaw members are latched together for urging the rear portions of said jaw members apart at a position remote from said latching means to urge said front portions of said jaw members together to clamp said staple cartridge and said anvil against the tissue during the formation of said staples.
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Specification