Buttress attachment for circular stapling device
US9414839B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Feb 13, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49815
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A circular stapling device includes a circular anvil assembly and a circular cartridge assembly. The anvil assembly includes a cap and head. The cap is movable relative to the head. The head supports a crush ring member that is movable into engagement with the cap to move the cap to an unapproximated position relative to the head to release a portion of an anvil buttress member supported between the anvil cap and the anvil head. The cartridge assembly includes a housing, a pusher member, a retaining ring member, and a fastener cartridge. The retaining ring member releasably secures a portion of a cartridge buttress member to one or both of the housing and the fastener cartridge. The retaining ring member releases the cartridge buttress member when the retaining ring member moves from a radially constricted condition to a radially expanded condition in response to a movement of the pusher member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.