Surgical stapling apparatus
First Claim
1. A surgical stapling apparatus, comprising:
- a housing;
an elongated member extending from the housing;
a tool assembly supported on a distal end of the elongated member, the tool assembly including a first jaw member and a second jaw member configured to move relative to each other between an open configuration and a closed configuration;
a cartridge assembly including a plurality of staples, the cartridge assembly releasably supported on the first jaw member, the cartridge assembly including an actuation sled and a slide releasably coupled to the actuation sled;
an anvil operably supported on the second jaw member;
a drive member having a working end that is positioned and configured to translate through the first and second jaw members of the tool assembly when the first and second jaw members are in the closed configuration, the drive member being movable independently of the slide;
a lock assembly including a latch movable from a locked position to an unlocked position, wherein in the locked position, the latch is positioned and configured to prevent distal translation of the drive member through the tool assembly; and
a spring member positioned and configured to urge the latch towards the locked position wherein the slide is configured to move the latch from the locked position to the unlocked position upon installation of the cartridge assembly onto the first jaw member, the drive member moving the slide and the actuation sled distally upon actuation of the stapling apparatus, and in a distal configuration of the slide, the slide uncouples from the actuation sled and the spring member biases the latch to move to the locked position.
1 Assignment
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Accused Products
Abstract
A surgical stapling apparatus (stapler) is provided. A tool assembly includes first and second jaw members. A cartridge assembly includes an actuation sled and a slide. A drive member having a working end is configured to translate through the tool assembly when the first and second jaw members are in a closed configuration. A lock assembly including a latch is movable from a locked position to an unlocked position. The latch is urged to the locked position to engage the working end to prevent distal translation of the drive member through the tool assembly. The slide is configured to move the latch from the locked position to the unlocked position upon installation of an unspent cartridge assembly onto the first jaw member. The slide is movable by the drive member upon actuation of the stapling apparatus to allow the latch to move back to the locked position.
2119 Citations
14 Claims
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1. A surgical stapling apparatus, comprising:
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a housing; an elongated member extending from the housing; a tool assembly supported on a distal end of the elongated member, the tool assembly including a first jaw member and a second jaw member configured to move relative to each other between an open configuration and a closed configuration; a cartridge assembly including a plurality of staples, the cartridge assembly releasably supported on the first jaw member, the cartridge assembly including an actuation sled and a slide releasably coupled to the actuation sled; an anvil operably supported on the second jaw member; a drive member having a working end that is positioned and configured to translate through the first and second jaw members of the tool assembly when the first and second jaw members are in the closed configuration, the drive member being movable independently of the slide; a lock assembly including a latch movable from a locked position to an unlocked position, wherein in the locked position, the latch is positioned and configured to prevent distal translation of the drive member through the tool assembly; and a spring member positioned and configured to urge the latch towards the locked position wherein the slide is configured to move the latch from the locked position to the unlocked position upon installation of the cartridge assembly onto the first jaw member, the drive member moving the slide and the actuation sled distally upon actuation of the stapling apparatus, and in a distal configuration of the slide, the slide uncouples from the actuation sled and the spring member biases the latch to move to the locked position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A reload comprising:
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a tool assembly including a first jaw member and a second jaw member configured to move relative to each other between an open configuration and a closed configuration; a cartridge assembly releasably supported on the first jaw member, the cartridge assembly including an actuation sled and a slide releasably coupled to the actuation sled; an anvil supported on the second jaw member; a drive member having a working end configured to translate through the tool assembly when the first and second jaw members are in the closed configuration; and a lock assembly including a latch movable from a locked position to an unlocked position, wherein in the locked position, the latch is positioned and configured to prevent distal translation of the drive member through the reload, wherein the slide is configured to move the latch from the locked position to the unlocked position upon installation of the cartridge assembly onto the first jaw member, the slide being coupled to the actuation sled during installation of the cartridge assembly. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification