Surgical stapling apparatus with powered retraction

Details Surgical stapling apparatus with powered retraction Surgical stapling apparatus with powered retraction

2011-08-30

2011-08-30

Rada, Rinaldi I. (Department: 3721)

Elongated-member-driving apparatus

Surgical stapler

C227S176100, C227S179100, C227S019000, C606S213000

Reexamination Certificate

active

08006885

ABSTRACT:
A surgical stapling apparatus comprises a handle assembly, an actuation shaft having a connector, and a retraction mechanism positioned within the handle assembly. The retraction mechanism includes a motor coupled to a transmission shaft, a first gear rotatably mounted on the transmission shaft, the first gear configured to engage a second gear, a clutch operatively attached to the second gear, a main shaft rotatably connected to the clutch, and a pulley coupled to the main shaft, the pulley being operatively attached to the connector. The connector and the pulley may be attached via a cable. The retraction mechanism may include a spring motor for maintaining the cable in tension. The spring motor may have a spring element wrapped around and interconnecting at least two arbors.

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European Search Report for corresponding EP 092516993 date of mail is Nov. 5, 2009 (3 pages).

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