Lockout feature for movable cutting member of surgical instrument
First Claim
1. A stapling apparatus, comprising:
- (a) an end effector, wherein the end effector is operable to apply at least one staple at a surgical site;
(b) a blade assembly operable to move along a first direction between a locked position and an unlocked position, wherein the blade assembly is further operable to translate along a second direction through the end effector in the unlocked position, wherein the blade assembly comprises an upper portion and a lower portion;
(c) a lockout feature, wherein the lockout feature is configured to prevent the blade assembly from translating along the second direction through the end effector in the locked position;
(d) a resilient member configured to bias the upper portion of the blade assembly into engagement with the lockout feature, wherein at least a portion of the lockout feature is interposed between at least part of the upper portion of the blade assembly and at least part of the resilient member, wherein the blade assembly is operable to translate relative to the portion of the lockout feature; and
(e) a staple cartridge configured to fit in the end effector, wherein the staple cartridge further includes a sliding member, wherein the sliding member is configured to slide along at least part of a length of the staple cartridge, wherein the staple cartridge contains the at least one staple,wherein the staple cartridge includes a lockout bypass feature configured to maintain the blade assembly in the unlocked position to thereby enable the blade assembly to clear the lockout feature.
4 Assignments
0 Petitions
Accused Products
Abstract
An end effector for use with a surgical instrument includes a first jaw, a second jaw, a blade assembly, and a lockout assembly. The first jaw removably couples with a staple cartridge. The second jaw is movably coupled with the first jaw. The blade assembly translates relative to the first jaw and includes a first tab. The lockout assembly includes a resilient member that biases the blade assembly to a lockout position. The lockout assembly engages the first tab of the blade assembly in the lockout position to prevent the blade assembly from translating distally relative to the first jaw when a staple cartridge is absent from the first jaw or when a spent staple cartridge is disposed in the first jaw.
868 Citations
18 Claims
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1. A stapling apparatus, comprising:
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(a) an end effector, wherein the end effector is operable to apply at least one staple at a surgical site; (b) a blade assembly operable to move along a first direction between a locked position and an unlocked position, wherein the blade assembly is further operable to translate along a second direction through the end effector in the unlocked position, wherein the blade assembly comprises an upper portion and a lower portion; (c) a lockout feature, wherein the lockout feature is configured to prevent the blade assembly from translating along the second direction through the end effector in the locked position; (d) a resilient member configured to bias the upper portion of the blade assembly into engagement with the lockout feature, wherein at least a portion of the lockout feature is interposed between at least part of the upper portion of the blade assembly and at least part of the resilient member, wherein the blade assembly is operable to translate relative to the portion of the lockout feature; and (e) a staple cartridge configured to fit in the end effector, wherein the staple cartridge further includes a sliding member, wherein the sliding member is configured to slide along at least part of a length of the staple cartridge, wherein the staple cartridge contains the at least one staple, wherein the staple cartridge includes a lockout bypass feature configured to maintain the blade assembly in the unlocked position to thereby enable the blade assembly to clear the lockout feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A stapling apparatus, comprising:
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(a) an end effector, wherein the end effector is operable to apply at least one staple at a surgical site, wherein the end effector comprises a first jaw and a second jaw, wherein the second jaw is configured to pivot relative to the first jaw; (b) a blade assembly operable to translate through the end effector, wherein the blade assembly comprises an upper portion and a lower portion; (c) a lockout feature, wherein a portion of the lockout feature is interposed between the first jaw and the second jaw, wherein the portion of the lockout feature interposed between the first jaw and the second jaw is not part of either the first jaw or the second jaw and is configured to prevent the blade assembly from translating through the end effector; (d) a resilient member configured to urge the blade assembly into engagement with the lockout feature, wherein at least part of the resilient member is interposed between at least part of the upper portion of the blade assembly and at least part of the lower portion of the blade assembly; and (e) a staple cartridge configured to fit in the end effector, wherein the staple cartridge contains the at least one staple, wherein the staple cartridge includes a lockout bypass feature configured to prevent the blade assembly from engaging the lockout feature, wherein the lockout bypass feature is configured to bear a resilient bias imposed by the resilient member via the blade assembly, wherein the blade assembly is operable to translate through a first range of motion where the resilient member resiliently bears against the blade assembly, wherein the blade assembly is operable to translate through a second range of motion where the resilient member no longer resiliently bears against the blade assembly. - View Dependent Claims (17)
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18. A stapling apparatus, comprising:
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(a) a staple cartridge, wherein the staple cartridge comprises; (i) a plurality of staples, and (ii) a sliding member operable to drive the staples from the staple cartridge, wherein the sliding member includes a lockout bypass feature; (b) a first jaw; (c) a second jaw; (d) a blade assembly, wherein the blade assembly includes; (i) a bypass engagement feature configured to engage the lockout bypass feature, wherein the lockout bypass feature is configured to permit a portion of the blade assembly to translate through the staple cartridge when the bypass engagement feature of the blade assembly is engaged with the lockout bypass feature of the staple cartridge, and (ii) an upper extension having a downwardly extending tab; and (e) a lockout feature, wherein a portion of the lockout feature is configured to engage the downwardly extending tab and thereby prevent the portion of the blade assembly from translating through the staple cartridge when the bypass engagement feature of the blade assembly is disengaged from the lockout bypass feature of the staple cartridge, wherein the portion of the lockout feature is located between the first jaw and the second jaw and is not part of either the first jaw or the second jaw.
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Specification