Staple drive assembly
US8127975B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2009 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jan 24, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/07278
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A staple drive assembly includes an actuation sled and at least one staple pusher. The staple drive assembly is adapted to fit within a staple cartridge having a plurality of staples and a corresponding number of retention slots. The at least one staple pusher includes at least one pusher plate for releasably engaging a backspan of a staple. The staple pusher may include a plurality of pusher plates that may be laterally and longitudinally spaced apart. An actuation member has at least one angled camming surface for engaging a complimentary angled surface of the at least one staple pusher. Camming engagement between the actuation member and the at least one staple pusher causes vertical movement of the at least one staple pusher. Lateral and longitudinal offset of the actuation member camming surfaces and the corresponding staple pusher following surfaces improves stability and control of the staple pusher during firing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.