Circular stapler mechanical lockout
First Claim
1. A method of locking out a surgical stapling device after firing, the method comprising:
- translating an anvil assembly of the surgical stapling device from a spaced position, in which the anvil assembly is spaced from a cartridge assembly of the surgical stapling device, to an approximated position, in which the anvil assembly is in close cooperative alignment with the cartridge assembly to clamp tissue therebetween;
translating a staple pusher relative to the cartridge assembly to urge a plurality of fasteners disposed in the cartridge assembly through the tissue towards the anvil assembly;
translating a lockout sleeve of the surgical stapling device relative to the cartridge assembly and the anvil assembly from a first position to a second position, a first portion of the lockout sleeve being disposed adjacent a shaft of the anvil assembly and a second portion of the lockout sleeve being engaged with the cartridge assembly when in the second position to inhibit translation of the lockout sleeve from the second position to the first position; and
translating the anvil assembly from the approximated position to the spaced position, the first portion of the lockout sleeve engaging the anvil assembly to inhibit translation of the anvil assembly from the spaced position to the approximated position.
1 Assignment
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Accused Products
Abstract
A surgical stapling device is disclosed including a cartridge assembly and an anvil assembly. The anvil assembly is translatable relative to the cartridge assembly between a spaced position, where the anvil assembly is spaced from the cartridge assembly, and an approximated position, where the anvil assembly is in close cooperative alignment with the cartridge assembly for clamping tissue disposed therebetween. A lockout sleeve is slidably supported on the cartridge assembly and translatable relative to the cartridge assembly and the anvil assembly between a first position and a second position. The lockout sleeve is configured to engage the anvil assembly and the cartridge assembly when the lockout sleeve is in the second position to inhibit translation of the anvil assembly relative to the cartridge assembly from the spaced position to the approximated position.
420 Citations
9 Claims
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1. A method of locking out a surgical stapling device after firing, the method comprising:
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translating an anvil assembly of the surgical stapling device from a spaced position, in which the anvil assembly is spaced from a cartridge assembly of the surgical stapling device, to an approximated position, in which the anvil assembly is in close cooperative alignment with the cartridge assembly to clamp tissue therebetween; translating a staple pusher relative to the cartridge assembly to urge a plurality of fasteners disposed in the cartridge assembly through the tissue towards the anvil assembly; translating a lockout sleeve of the surgical stapling device relative to the cartridge assembly and the anvil assembly from a first position to a second position, a first portion of the lockout sleeve being disposed adjacent a shaft of the anvil assembly and a second portion of the lockout sleeve being engaged with the cartridge assembly when in the second position to inhibit translation of the lockout sleeve from the second position to the first position; and translating the anvil assembly from the approximated position to the spaced position, the first portion of the lockout sleeve engaging the anvil assembly to inhibit translation of the anvil assembly from the spaced position to the approximated position. - View Dependent Claims (2, 3, 4, 5)
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6. A method for inhibiting re-approximation of an anvil assembly of a surgical stapling device comprising:
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advancing a drive member to advance a staple pusher to fire staples from a staple cartridge; advancing a lockout sleeve distally in relation to the staple cartridge and the anvil assembly to a locked position in response to advancement of the drive member; moving the anvil assembly in relation to the staple cartridge from an approximated position to an unapproximated position; and moving the lockout sleeve radially inward to obstruct movement of the anvil assembly back towards the staple cartridge to the approximated position. - View Dependent Claims (7, 8, 9)
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Specification