Surgical stapling apparatus
First Claim
1. A surgical stapling apparatus, comprising:
- a first jaw member having a locking assembly and defining a channel extending along a longitudinal axis of the first jaw member and through a surface of the first jaw member;
a cartridge configured to selectively couple to the first jaw member, the cartridge having fasteners and an actuator having a proximally extending finger;
a second jaw member having an anvil with staple forming depressions;
a drive member movable through the channel from a retracted position to an advanced position to drive the fasteners toward the anvil, the drive member pushing a sled so that the sled interacts with a pusher;
the actuator being coupled to the sled and biased against the pusher, the finger of the actuator aligning with the locking assembly when the cartridge couples to first jaw member; and
the locking assembly including a locking lever biased toward the channel of the first jaw member, the finger of the actuator contacting the locking lever when the cartridge is coupled to the first jaw, rotating the locking lever to a position away from the channel, the locking lever moving to a position blocking the channel when the drive member is moved to the advanced position; and
the first jaw member defines a recess and includes a sidewall, the locking lever rotating to the position away from the channel until a portion of the locking lever contacts the sidewall of the first jaw member.
1 Assignment
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Accused Products
Abstract
A surgical stapling apparatus (stapler) is provided. The stapler includes a housing, elongated member, and a reload. A cartridge is configured to selectively couple to a first jaw member of the reload and includes one or more resilient members thereon. An anvil operably supported on a second jaw member of the reload is configured to compress one or more fasteners ejected from the cartridge. The anvil includes one or more locking members thereon. A knife is configured to translate through the cartridge and anvil when the first and second jaw members are in a closed configuration. Engagement between the knife and the resilient member(s) causes the resilient member(s) to move from an initial configuration that allows the knife to travel distally past the locking member(s) to a final configuration that allows the locking member(s) to engage the knife.
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Citations
14 Claims
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1. A surgical stapling apparatus, comprising:
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a first jaw member having a locking assembly and defining a channel extending along a longitudinal axis of the first jaw member and through a surface of the first jaw member; a cartridge configured to selectively couple to the first jaw member, the cartridge having fasteners and an actuator having a proximally extending finger; a second jaw member having an anvil with staple forming depressions;
a drive member movable through the channel from a retracted position to an advanced position to drive the fasteners toward the anvil, the drive member pushing a sled so that the sled interacts with a pusher;the actuator being coupled to the sled and biased against the pusher, the finger of the actuator aligning with the locking assembly when the cartridge couples to first jaw member; and
the locking assembly including a locking lever biased toward the channel of the first jaw member, the finger of the actuator contacting the locking lever when the cartridge is coupled to the first jaw, rotating the locking lever to a position away from the channel, the locking lever moving to a position blocking the channel when the drive member is moved to the advanced position; andthe first jaw member defines a recess and includes a sidewall, the locking lever rotating to the position away from the channel until a portion of the locking lever contacts the sidewall of the first jaw member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical stapling apparatus, comprising:
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a first jaw member having a locking assembly and defining a knife channel; a cartridge selectively coupled to the first jaw member, the cartridge including a sled and an actuator, the actuator coupled to the sled and having a proximally extending finger; a drive member movable through the knife channel from a retracted position to an advanced position to advance the sled; and the locking assembly including a locking lever having a blocking position in which the locking lever is positioned across the knife channel of the first jaw member and a non-blocking position in which the finger is positioned away from the knife channel, the finger of the actuator contacting the locking lever when the cartridge is coupled to the first jaw to rotate the locking lever from the blocking position to the non-blocking position, the locking lever moving to the blocking position when the drive member is moved towards the advanced position. - View Dependent Claims (11, 12)
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13. A surgical stapling apparatus, comprising:
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a first jaw member having a locking assembly, the locking assembly including a locking lever; a cartridge selectively coupled to the first jaw member, the cartridge including a sled, an actuator, and a plurality of fasteners, the actuator coupled to the sled and including a proximally extending finger, the sled distally translatable through the cartridge to eject the plurality of fasteners from the cartridge; and a drive member translatable within the first jaw member between a retracted position to an advanced position, wherein the finger of the actuator engages the locking lever when the cartridge is coupled to the first jaw to rotate the locking lever from the blocking position in which the locking lever prevents advancement of the drive member from the retracted position to a non-blocking position in which the locking lever permits advancement of the drive member, and wherein the finger disengages the locking lever as the sled is translated distally such that biasing of the locking lever urges the locking lever to the blocking position. - View Dependent Claims (14)
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Specification