Self contained gas powered surgical apparatus
First Claim
1. A surgical apparatus for driving surgical fasteners comprising:
- a) a frame portion defining an elongated barrel section and a stationary hand grip section which depends angularly from said barrel section;
b) an elongated body portion extending distally from said barrel section of said frame portion and defining a first longitudinal axis;
c) a fastener applying assembly associated with a distal end portion of said body portion, said fastener applying assembly including;
i) a cartridge assembly having a tissue engaging surface thereon and having a plurality of surgical fasteners contained therein; and
ii) an anvil member mounted adjacent said cartridge assembly and having a fastener forming surface thereon, said anvil member and said cartridge assembly being relatively movable between an open position wherein said fastener forming surface is spaced from said tissue engaging surface and a closed position wherein said fastener forming surface is in close cooperative alignment with said tissue engaging surface;
d) approximation means operatively associated with said fastener applying assembly and actuable from said frame portion for effecting relative movement of said anvil member and said cartridge assembly between said open and closed positions;
e) fastener ejection means movable through said cartridge assembly and actuable from said frame portion for sequentially ejecting said plurality of surgical fasteners from said cartridge assembly;
f) a pneumatic actuation system disposed within said frame portion and operatively associated with said means for sequentially ejecting surgical fasteners from said cartridge assembly; and
g) a counter mechanism for indicating the number of times the pneumatic actuation system may be operated, including a ratchet assembly having a linearly translating rack member and a reciprocating ratchet shaft.
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Accused Products
Abstract
A self contained gas powered endoscopic surgical apparatus is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes a frame portion, an elongated portion extending from the frame portion, and an articulating fastener applying assembly associated with a distal end of the elongated portion. The fastener applying assembly includes a base portion, a staple cartridge housing, and an anvil member which has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge housing. A serf contained pneumatic system is associated with the frame portion and is actuable to eject the surgical fasteners from the cartridge assembly. A first mechanism is provided for effectuating the rotation of the fastener applying assembly about an axis defined by the body portion, a second mechanism is provided for effectuating the articulation of the fastener applying assembly, and a third mechanism is provided for independently rotating the cartridge housing and anvil member relative to a longitudinal axis defined by the base position to increase the range of operability of the apparatus.
2101 Citations
17 Claims
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1. A surgical apparatus for driving surgical fasteners comprising:
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a) a frame portion defining an elongated barrel section and a stationary hand grip section which depends angularly from said barrel section; b) an elongated body portion extending distally from said barrel section of said frame portion and defining a first longitudinal axis; c) a fastener applying assembly associated with a distal end portion of said body portion, said fastener applying assembly including; i) a cartridge assembly having a tissue engaging surface thereon and having a plurality of surgical fasteners contained therein; and ii) an anvil member mounted adjacent said cartridge assembly and having a fastener forming surface thereon, said anvil member and said cartridge assembly being relatively movable between an open position wherein said fastener forming surface is spaced from said tissue engaging surface and a closed position wherein said fastener forming surface is in close cooperative alignment with said tissue engaging surface; d) approximation means operatively associated with said fastener applying assembly and actuable from said frame portion for effecting relative movement of said anvil member and said cartridge assembly between said open and closed positions; e) fastener ejection means movable through said cartridge assembly and actuable from said frame portion for sequentially ejecting said plurality of surgical fasteners from said cartridge assembly; f) a pneumatic actuation system disposed within said frame portion and operatively associated with said means for sequentially ejecting surgical fasteners from said cartridge assembly; and g) a counter mechanism for indicating the number of times the pneumatic actuation system may be operated, including a ratchet assembly having a linearly translating rack member and a reciprocating ratchet shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. In a surgical apparatus for driving surgical fasteners having a pneumatic actuation system disposed within a frame portion for sequentially ejecting a plurality of surgical fasteners from a cartridge assembly, the improvement comprising a counter mechanism for indicating the number of times the pneumatic actuation system may be operated, including a ratchet assembly having a linearly translating rack member and a reciprocating ratchet shaft.
Specification