Surgical stapler
First Claim
Patent Images
1. A surgical stapler comprising:
- a handle assembly including a movable handle;
an elongated body extending distally from the handle assembly and defining a longitudinal axis;
an actuation assembly including an actuation member having teeth, a driving pawl, a locking member, and a release member, the driving pawl being operatively associated with the movable handle and movable into engagement with the actuation member to effect longitudinal movement of the actuation member, the locking member being movable into engagement with the actuation member to retain the actuation member in a longitudinally fixed position, the release member being movable to engage the locking member and move the locking member away from the actuation member;
a staple cartridge supported by the elongated body and containing a plurality of staples;
an anvil mounted adjacent the staple cartridge, the anvil having a fastener forming surface thereon, the anvil and staple cartridge being movable in relation to one another between an open and a closed position; and
an actuator operatively connected to the actuation member, the actuator being configured to move relative to the staple cartridge and anvil to effectuate sequential ejection of the staples from the staple cartridge.
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Accused Products
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.
1785 Citations
17 Claims
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1. A surgical stapler comprising:
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a handle assembly including a movable handle; an elongated body extending distally from the handle assembly and defining a longitudinal axis; an actuation assembly including an actuation member having teeth, a driving pawl, a locking member, and a release member, the driving pawl being operatively associated with the movable handle and movable into engagement with the actuation member to effect longitudinal movement of the actuation member, the locking member being movable into engagement with the actuation member to retain the actuation member in a longitudinally fixed position, the release member being movable to engage the locking member and move the locking member away from the actuation member; a staple cartridge supported by the elongated body and containing a plurality of staples; an anvil mounted adjacent the staple cartridge, the anvil having a fastener forming surface thereon, the anvil and staple cartridge being movable in relation to one another between an open and a closed position; and an actuator operatively connected to the actuation member, the actuator being configured to move relative to the staple cartridge and anvil to effectuate sequential ejection of the staples from the staple cartridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical stapler, comprising:
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a handle assembly including a movable handle; an elongated body extending distally from the handle assembly and defining a longitudinal axis; a staple cartridge supported by the elongated body and containing a plurality of staples; an anvil mounted adjacent the staple cartridge, the anvil having a fastener forming surface thereon, the anvil and staple cartridge being movable in relation to one another between an open and a closed position; an actuation assembly including an actuation member having teeth, a driving pawl, and a locking member, the driving pawl being operatively associated with the movable handle and movable into engagement with the actuation member to effect longitudinal movement of the actuation member, the actuation member being biased in a proximal direction, and the locking member being arranged for maintaining the position of the actuation rack; an actuator operatively connected to the actuation member, the actuator being configured to move relative to the staple cartridge and anvil to effectuate sequential ejection of the staples from the staple cartridge. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification