Variable compression surgical fastener apparatus
First Claim
1. A surgical fastener applying apparatus comprising:
- a fastener assembly including an anvil section and a cartridge section, the cartridge section and the anvil section movable from an unclamped position to a clamped position to clamp tissue therebetween, the cartridge section having a tissue contacting surface with a plurality of retention slots formed therein;
a plurality of first surgical fasteners and a plurality of second surgical fasteners retained within the cartridge section, each surgical fastener disposed within a corresponding retention slot, the plurality of first surgical fasteners having a first backspan and the plurality of second surgical fasteners having a second backspan;
a plurality of first pushers and a plurality of second pushers positioned within the cartridge section; and
an actuation member movable through the cartridge section and engagable with the plurality of first pushers and the plurality of second pushers to move the plurality of first pushers and the plurality of second pushers towards the tissue contacting surface of the cartridge section, the plurality of first pushers being configured and dimensioned to deform the first backspan from an initial configuration into a subsequent configuration such that the plurality of first surgical fasteners apply a first compressive force to tissue upon formation, the plurality of second pushers being configured and dimensioned to deform the second backspan from an initial configuration into a subsequent configuration such that the plurality of second surgical fasteners apply a second compressive force to tissue upon formation, the second compressive force being different than the first compressive force.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical fastener applying apparatus includes an anvil section and a cartridge section, where the cartridge section and the anvil section are movable from an unclamped position to a clamped position to clamp tissue therebetween. The cartridge section has a plurality of retention slots. A plurality of first surgical fasteners and a plurality of second surgical fasteners are disposed within a corresponding retention slot. The plurality of first surgical fasteners has a first backspan with a first configuration and the plurality of second surgical fasteners has a second backspan with a second configuration. The first configuration is different from the second configuration. In addition, when the first configuration applies a first compressive force to tissue upon formation of the plurality of first surgical fasteners and the second configuration applies a second compressive force to tissue upon formation of the plurality of second surgical fasteners, the second compressive force is different from the first compressive force.
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Citations
20 Claims
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1. A surgical fastener applying apparatus comprising:
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a fastener assembly including an anvil section and a cartridge section, the cartridge section and the anvil section movable from an unclamped position to a clamped position to clamp tissue therebetween, the cartridge section having a tissue contacting surface with a plurality of retention slots formed therein; a plurality of first surgical fasteners and a plurality of second surgical fasteners retained within the cartridge section, each surgical fastener disposed within a corresponding retention slot, the plurality of first surgical fasteners having a first backspan and the plurality of second surgical fasteners having a second backspan; a plurality of first pushers and a plurality of second pushers positioned within the cartridge section; and an actuation member movable through the cartridge section and engagable with the plurality of first pushers and the plurality of second pushers to move the plurality of first pushers and the plurality of second pushers towards the tissue contacting surface of the cartridge section, the plurality of first pushers being configured and dimensioned to deform the first backspan from an initial configuration into a subsequent configuration such that the plurality of first surgical fasteners apply a first compressive force to tissue upon formation, the plurality of second pushers being configured and dimensioned to deform the second backspan from an initial configuration into a subsequent configuration such that the plurality of second surgical fasteners apply a second compressive force to tissue upon formation, the second compressive force being different than the first compressive force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A surgical instrument comprising:
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an elongate shaft; and a tool assembly operatively secured to a distal end of the elongate shaft, the tool assembly including an anvil member having a tissue contacting surface, and a cartridge member pivotally connected to the anvil member and having a tissue contacting surface, the cartridge member defining a central longitudinal axis, and including; a plurality of first surgical fasteners arranged into a plurality of inner rows positioned on opposite sides of the central longitudinal axis of the cartridge member, the plurality of first surgical fasteners each including a pair of legs connected by a backspan; a plurality of second surgical fasteners arranged into a plurality of outer rows positioned on opposite sides of the central longitudinal axis of the cartridge member, the plurality of second surgical fasteners each including a pair of legs connected by a backspan; a plurality of first pushers configured and dimensioned for engagement with the plurality of first surgical fasteners to eject the plurality of first surgical fasteners from the cartridge member into the anvil member for formation; a plurality of second pushers configured and dimensioned for engagement with the plurality of second surgical fasteners to eject the plurality of second surgical fasteners from the cartridge member into the anvil member for formation; and an actuation member movable through the cartridge section and engagable with the plurality of first pushers and the plurality of second pushers to move the plurality of first pushers and the plurality of second pushers towards the tissue contacting surface of the cartridge member, the plurality of first pushers being configured and dimensioned to deform the backspans of the plurality of first surgical fasteners from an initial configuration into a subsequent configuration such that the plurality of first surgical fasteners apply a first compressive force to tissue upon formation, and the plurality of second pushers being configured and dimensioned to deform the backspans of the plurality of second surgical fasteners from an initial configuration into a subsequent configuration such that the plurality of second surgical fasteners apply a second compressive force to tissue upon formation, the second compressive force being different than the first compressive force. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification