Surgical stapling apparatus with powered retraction
US8006885B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2007 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Jun 23, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/2943
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.