ANVIL ASSEMBLY FOR SURGICAL STAPLING DEVICE
First Claim
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1. An anvil assembly for a surgical stapler comprising:
- an anvil center rod extending along a longitudinal axis, and having a proximal end portion and a distal end portion; and
an anvil head secured to the distal end portion of the anvil center rod, the anvil center rod and the anvil head including corresponding mating structures configured and dimensioned to facilitate connection of the anvil center rod and the anvil head such that relative movement between the anvil center rod and the anvil head is substantially inhibited, wherein the corresponding mating structures included on the anvil center rod and the anvil head are each non-circular in configuration.
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Abstract
An anvil assembly for use with a surgical fastener applying apparatus. The anvil assembly includes an anvil center rod and anvil head that is secured to the distal end portion of the anvil center rod. The anvil center rod and the anvil head include corresponding mating structures that are configured and dimensioned to facilitate connection of the anvil center rod and the anvil head such that relative movement between the anvil center rod and the anvil head is substantially inhibited. The anvil center rod and the anvil head include corresponding mating structures that are non-circular in configuration. A method of assembling a surgical anvil assembly is also disclosed.
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Citations
20 Claims
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1. An anvil assembly for a surgical stapler comprising:
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an anvil center rod extending along a longitudinal axis, and having a proximal end portion and a distal end portion; and an anvil head secured to the distal end portion of the anvil center rod, the anvil center rod and the anvil head including corresponding mating structures configured and dimensioned to facilitate connection of the anvil center rod and the anvil head such that relative movement between the anvil center rod and the anvil head is substantially inhibited, wherein the corresponding mating structures included on the anvil center rod and the anvil head are each non-circular in configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical fastener applying apparatus, comprising:
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an elongated body portion having proximal and distal ends; a shell assembly positioned at the distal end of the elongated body portion, the shell assembly being configured and dimensioned to retain a plurality of surgical fasteners; and an anvil assembly including; an anvil center rod extending along a longitudinal axis, and having a proximal end portion and a distal end portion; and an anvil head secured to the distal end portion of the anvil center rod, the anvil center rod and the anvil head including corresponding mating structures configured and dimensioned to facilitate connection of the anvil center rod and the anvil head such that relative movement between the anvil center rod and the anvil head is substantially inhibited, wherein the corresponding mating structures included on the anvil center rod and the anvil head are each non-circular in configuration. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of manufacturing an anvil assembly for use with a surgical fastener applying apparatus, the method comprising the steps of:
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providing an anvil head defining a longitudinal axis; providing an anvil plate including an outer side wall; positioning the anvil head and the anvil plate in contacting relation; and roll forming a portion of the anvil head towards the anvil plate to fixedly secure the anvil head and the anvil plate together such that the anvil assembly includes a substantially uniform proximal-most surface.
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19. A method of assembling a surgical anvil assembly comprising the steps of:
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inserting a distal end of a center rod into an anvil head until a flange included at the distal end of the center rod is positioned within a bearing member defining a bore formed in the anvil head; deforming a portion of the bearing member radially inward to define a shoulder configured and dimensioned for engagement with the flange; and attaching a cap member to a distal surface of the anvil head. - View Dependent Claims (20)
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Specification