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Surgical stapling apparatus
| Details |
Inventors: Green, David T.; Ratcliff, Keith; Milliman, Keith; Sienkiewicz, Henry R.; Palmer, Mitchell J.; Bryan, Graham W.;
Assignee: United States Surgical Corporation (Norwalk, CT)
Primary Examiner: Ashley; Boyer
Assistant Examiner:
Attorney, Agent or Firm:
An 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 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. |
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DETAILED DESCRIPTION The surgical instrument in accordance with an embodiment of the present invention is a surgical stapling apparatus which is adapted for placing one or more longitudinal rows of staples.
This apparatus may further include a knife for making an incision in body tissue between the rows of staples.
The latter configuration may find particular use of adjoining two hollow organs or in removing an organ, such as the appendix, the gallbladder, etc.
In a preferred embodiment of the subject invention the endoscopic stapler comprises a frame portion, an elongated tubular body portion extending from the frame portion and adapted for receiving an articulating cartridge assembly.
The articulating cartridge assembly includes a cartridge mounting portion removably maintained in a distal end portion of the tubular body portion and a cartridge housing portion which is pivotally connected to the cartridge mounting portion.
A cable loop assembly is associated with the tubular body portion of the instrument for effectuating the articulation of the cartridge housing portion relative to the cartridge mounting portion of the cartridge assembly.
The cable loop assembly includes a cable member, a pivot block member mounted for rotation in a distal end portion on the tubular body portion about an axis perpendicular to the longitudinal axis thereof, and a rotation control member operatively associated with the tubular body portion of the apparatus for manipulating the cable loop assembly.
A cartridge element, which includes a plurality of surgical staples slidably mounted therein, and having a tissue engaging surface, is receivable within the cartridge housing portion of the cartridge assembly.
An anvil member is also provided which has a staple forming surface formed thereon and which is mounted adjacent the cartridge housing portion of the cartridge assembly such that the anvil member is movable between an open position and a closed position wherein the staple forming surface is in close cooperative alignment with the tissue engaging surface of the cartridge element
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