Anvil for surgical stapler
First Claim
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1. An anvil assembly for use with a surgical fastener applying apparatus, the anvil assembly comprising:
- an anvil head defining a central longitudinal axis and formed from a first material; and
an annular anvil plate supported by the anvil head and including a proximally facing tissue contacting surface with a plurality of fastener pockets formed therein, the anvil plate being formed from a second material different from the first material and selected from the group consisting of steel, titanium, magnesium, aluminum, and zinc alloy, wherein the anvil plate includes an outermost side wall that tapers along a linear slope towards the central longitudinal axis of the anvil head in a proximal direction.
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Abstract
An anvil assembly for use therewith a surgical fastener applying apparatus including an anvil plate and an anvil head configured and dimensioned to support the anvil plate. The anvil plate and the anvil head may be formed from different materials. The anvil plate can include a tapered outer side wall allowing the anvil assembly to realize a substantially uniform proximal-most surface upon assembly.
528 Citations
19 Claims
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1. An anvil assembly for use with a surgical fastener applying apparatus, the anvil assembly comprising:
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an anvil head defining a central longitudinal axis and formed from a first material; and an annular anvil plate supported by the anvil head and including a proximally facing tissue contacting surface with a plurality of fastener pockets formed therein, the anvil plate being formed from a second material different from the first material and selected from the group consisting of steel, titanium, magnesium, aluminum, and zinc alloy, wherein the anvil plate includes an outermost side wall that tapers along a linear slope towards the central longitudinal axis of the anvil head in a proximal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A surgical fastener applying apparatus, comprising:
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a surgical fastener retention assembly including a plurality of surgical fasteners each having first and second legs; and an anvil assembly including a tissue contacting surface with a plurality of fastener pockets formed therein each including a pair of cavities configured and dimensioned to receive corresponding legs of one of the surgical fasteners, the cavities being connected by a linear section having first and second endpoints connected to each other by sidewalls extending in parallel relation, the linear section including a pair of arcuate forming surfaces each configured and dimensioned to engage and redirect a corresponding leg of the surgical fastener to thereby achieve a formed configuration of the surgical fastener, the cavities being substantially spherical in configuration to provide increased surface area configured and dimensioned for contact with corresponding legs of the surgical fastener to guide the legs of the surgical fasteners into contact with the arcuate forming surface. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification