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US 11,133,106 B2Granted
Surgical instrument assembly comprising a retraction assembly
AssigneeCilag GmbH International
InventorsFrederick E. Shelton, IV, Emily A. Schellin, Jerome R. Morgan, Jeffrey S. Swayze, Steven G. Hall
Life of this patent
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Abstract
A surgical instrument assembly is disclosed. The surgical instrument assembly comprises a housing, a shaft assembly configured to be operably attached to the housing, a retraction assembly configured to manually retract a firing member, and a lock operably coupled with the retraction assembly and a drive unit.
Claims5
A surgical instrument assembly, comprising:
- a housing, comprising:
- a drive unit supported within the housing, wherein the drive unit comprises:
- a motor comprising a motor shaft and a motor housing;
- and
- a gear box, comprising:
- a gear box housing non-movably coupled to the motor housing;
- and
- a gear assembly;
- a shaft assembly configured to be attached to the housing, wherein the shaft assembly comprises:
- a proximal coupler portion configured to be operably coupled with the drive unit;
- and
- a firing member assembly comprising a firing rod, wherein the gear assembly is drivingly positioned intermediate the motor shaft and the firing member assembly;
- a retraction assembly configured to selectively retract the firing rod without assistance of the motor;
- and
- locking means operably coupled with the retraction assembly and the drive unit, wherein the locking means is configured to prevent firing rod advancement control motions from advancing the firing rod distally and allow only firing member retraction control motions to retract the firing rod proximally when the retraction assembly is actuated, wherein an operable connection between the firing member assembly and the motor shaft is maintained during actuation of the retraction assembly, and wherein the motor housing and the gear box housing are supported within the housing for rotation relative thereto as a unit during operation of the retraction assembly.
12 more elements
A surgical instrument assembly, comprising:
- a housing, comprising:
- a drive unit supported within the housing, wherein the drive unit comprises:
- a motor comprising a motor shaft and a motor housing;
- and
- a gear box, comprising:
- a gear box housing non-movably coupled to the motor housing;
- and
- a gear assembly drivingly coupled to the motor shaft;
- a shaft assembly configured to be attached to the housing, wherein the shaft assembly comprises:
- a proximal coupler portion configured to be operably coupled with the drive unit;
- and
- a firing member assembly comprising a firing member, wherein the gear assembly is configured to interface with the firing member assembly such that a rotation of the motor shaft is configured to actuate the firing member;
- a retraction assembly configured to manually retract the firing member;
- and
- a lock operably coupled with the retraction assembly and the drive unit, wherein the lock is configured to prevent firing member advancement control motions from advancing the firing member distally and allow only firing member retraction control motions to retract the firing member proximally when the retraction assembly is actuated, wherein an operable connection between the firing member assembly and the motor shaft is maintained during actuation of the retraction assembly, and wherein the motor housing and the gear box housing are supported within the housing for rotation relative thereto as a unit during operation of the retraction assembly.
12 more elements
A surgical instrument assembly, comprising:
- a housing, comprising:
- a drive unit supported within the housing, wherein the drive unit comprises:
- a motor comprising a motor shaft and a motor housing;
- and
- a gear box, comprising:
- a gear box housing fixedly attached to the motor housing;
- and
- a gear assembly drivingly coupled to the motor shaft;
- a shaft assembly configured to be operably attached to the housing, wherein the shaft assembly comprises a firing member assembly comprising a firing member, wherein the gear assembly is configured to interface with the firing member assembly such that a rotation of the motor shaft is configured to actuate the firing member;
- a retraction assembly configured to manually retract the firing member;
- and
- a lock operably coupled with the retraction assembly and the drive unit, wherein the lock is configured to prevent firing member advancement control motions from advancing the firing member distally and allow only firing member retraction control motions to retract the firing member proximally when the retraction assembly is actuated, wherein an operable connection between the firing member assembly and the motor shaft is maintained during actuation of the retraction assembly, and wherein the motor housing and the gear box housing are supported within the housing for rotation relative thereto as a unit during operation of the retraction assembly.
9 more elements
Dependencies are inferred from the claim text.