Surgical stapler
First Claim
Patent Images
1. A surgical stapler, comprising:
- a) a handle assembly including a movable handle mounted for manipulation through an actuating stroke;
b) an elongated body extending distally from the handle assembly and defining a longitudinal axis;
c) an actuation assembly supported at least partially within the handle assembly and mounted for linear movement in response to movement of the movable handle through the actuating stroke, the actuation assembly including a rack and the movable handle is operatively connected to a pawl configured to engage the rack to advance the rack in a distal direction in response to manipulation of the movable handle, the rack being biased in a proximal direction;
d) a staple cartridge supported in a channel adjacent a distal portion of the elongated body and containing a plurality of staples defining at least one staple line having a first linear dimension;
e) an anvil mounted adjacent the cartridge, the anvil having a fastener forming surface thereon, the anvil being movable in relation to the staple cartridge between an open position and a closed position; and
f) an actuator operatively connected to the actuation assembly, the actuator being configured to move relative to the staple cartridge and anvil to sequentially eject the staples from the cartridge in response to movement of the movable handle through the actuation stroke, more than one actuating stroke being required to eject all of the plurality of staples from the staple cartridge.
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Abstract
A surgical device is described herein that can be used to fire different types and sizes of disposable loading units. In a preferred embodiment, the device applies parallel rows of surgical fasteners to body tissue and concomitantly forms an incision between the rows of staples during an endoscopic or laparoscopic surgical procedure. The device can be utilized with disposable loading units configured to apply linear rows of staples measuring from about 15 mm in length to about 60 mm in length and can be used to fire disposable loading units containing surgical clips and individual staples.
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Citations
15 Claims
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1. A surgical stapler, comprising:
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a) a handle assembly including a movable handle mounted for manipulation through an actuating stroke; b) an elongated body extending distally from the handle assembly and defining a longitudinal axis; c) an actuation assembly supported at least partially within the handle assembly and mounted for linear movement in response to movement of the movable handle through the actuating stroke, the actuation assembly including a rack and the movable handle is operatively connected to a pawl configured to engage the rack to advance the rack in a distal direction in response to manipulation of the movable handle, the rack being biased in a proximal direction; d) a staple cartridge supported in a channel adjacent a distal portion of the elongated body and containing a plurality of staples defining at least one staple line having a first linear dimension; e) an anvil mounted adjacent the cartridge, the anvil having a fastener forming surface thereon, the anvil being movable in relation to the staple cartridge between an open position and a closed position; and f) an actuator operatively connected to the actuation assembly, the actuator being configured to move relative to the staple cartridge and anvil to sequentially eject the staples from the cartridge in response to movement of the movable handle through the actuation stroke, more than one actuating stroke being required to eject all of the plurality of staples from the staple cartridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification