Circular stapling device with anvil rotation locking structure
US11141163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2019 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Sep 25, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A circular stapling device includes an anvil assembly and an adaptor assembly including a shell assembly. The adaptor assembly includes an anvil retainer including an asymmetric tip. The anvil assembly has a center rod, an anvil head supported on the center rod, and an alignment member. The center rod has a proximal portion and a distal portion and defines a channel that extends from the proximal portion to the distal portion. The alignment member is positioned within the channel and is configured to engage the asymmetric trocar tip of the anvil retainer of the adaptor when the anvil assembly is attached to the anvil retainer to properly align the anvil assembly with the shell assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.