Variable compression surgical fastener cartridge
First Claim
1. A surgical fastener applying apparatus comprising:
- a cartridge body including a tissue contacting surface, the tissue contacting surface including a plurality of fastener retention slots arranged in a plurality of rows including at least an inner row and an outer row;
a plurality of surgical fasteners disposed in the inner and outer rows, and configured such that a plurality of fasteners disposed in the inner row have a first diameter that is less than a second diameter of a plurality of surgical fasteners disposed in the outer row;
an anvil having an inner row and an outer row of depressions for forming the fasteners; and
a plurality of pushers operably disposed within the cartridge body, each pusher of the plurality of pushers being operably associated with a respective one of the plurality of surgical fasteners to eject the surgical fasteners towards the respective depression in the anvil, the plurality of pushers are flexible to provide a requisite driving force to form the inner and outer rows of fasteners against the respective depressions in the anvil such that the plurality of surgical fasteners disposed in the outer row deflect the pushers more than the plurality of surgical fasteners disposed in the inner row such that upon formation of a corresponding surgical fastener, the surgical fasteners ejected from the inner row provide a greater compressive force to tissue than the surgical fasteners ejected from the outer row.
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Accused Products
Abstract
A surgical fastener applying apparatus comprising a cartridge body including a tissue contacting surface including a plurality of fastener retention slots arranged in a plurality of rows including at least an inner row and an outer row, a plurality of surgical fasteners disposed in the inner and outer rows and configured such that a plurality of fasteners disposed in the inner row have a first diameter that is less than a second diameter of a plurality of surgical fasteners disposed in the outer row, and an anvil having an inner row and an outer row of depressions for forming the fasteners. A plurality of pushers are operably associated with the plurality of surgical fasteners, the pushers configured to eject an associated surgical fastener towards the respective depression in the anvil such that upon formation of a corresponding surgical fastener, the surgical fasteners ejected from the inner row provide a greater compressive force to tissue than the surgical fasteners ejected from the outer row.
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Citations
19 Claims
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1. A surgical fastener applying apparatus comprising:
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a cartridge body including a tissue contacting surface, the tissue contacting surface including a plurality of fastener retention slots arranged in a plurality of rows including at least an inner row and an outer row; a plurality of surgical fasteners disposed in the inner and outer rows, and configured such that a plurality of fasteners disposed in the inner row have a first diameter that is less than a second diameter of a plurality of surgical fasteners disposed in the outer row; an anvil having an inner row and an outer row of depressions for forming the fasteners; and a plurality of pushers operably disposed within the cartridge body, each pusher of the plurality of pushers being operably associated with a respective one of the plurality of surgical fasteners to eject the surgical fasteners towards the respective depression in the anvil, the plurality of pushers are flexible to provide a requisite driving force to form the inner and outer rows of fasteners against the respective depressions in the anvil such that the plurality of surgical fasteners disposed in the outer row deflect the pushers more than the plurality of surgical fasteners disposed in the inner row such that upon formation of a corresponding surgical fastener, the surgical fasteners ejected from the inner row provide a greater compressive force to tissue than the surgical fasteners ejected from the outer row. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A surgical fastener cartridge for use with a surgical fastener applying apparatus, the cartridge comprising:
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a cartridge body including a tissue contacting surface and a plurality of fastener retention slots arranged in a first row and a second row, the first row being closer to a central longitudinal axis of the cartridge body than the second row; a plurality of surgical fasteners disposed in a first row and a second row, the first row being closer to a central longitudinal axis of the cartridge body than the second row, at least one of the fasteners disposed in the first row has a diameter that is less than a diameter of at least one of the surgical fasteners disposed in the second row; and a plurality of flexible pushers operably disposed within the cartridge body, each pusher of the plurality of pushers being operably associated with a respective one of the plurality of surgical fasteners to eject the plurality surgical fasteners towards respective depressions in an anvil of the surgical fastener applying apparatus, the plurality of flexible pushers providing a requisite driving force to form the inner and outer rows of fasteners against the respective depressions in the anvil such that during formation of corresponding surgical fasteners, the plurality of surgical fasteners disposed in the second row deflect the plurality of pushers more than the plurality of surgical fasteners disposed in the first row such that the surgical fasteners ejected from the first row provide a greater compressive force to tissue than the surgical fasteners ejected from the second row. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification