Hand assisted laparoscopic seal assembly with a ratcheting mechanism
US7766822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2007 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Sep 9, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00477
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A seal assembly for permitting hand assisted laparoscopic procedures includes a seal cap having a seal positioned within a housing. The housing includes a lower seal ring having a track which supports an upper seal ring for relative rotational motion, wherein the seal is supported between the upper seal ring and the lower seal ring for rotation between an open orientation and a closed orientation. The track includes an inner upstanding annular wall and an outer upstanding annular wall connected by a base member. A ratchet mechanism controls motion of the upper seal ring relative to the lower seal ring. The ratchet mechanism includes a ratchet arm oriented to engage a ratchet surface. The ratchet surface extends outwardly from a center of the seal assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.