Access assembly with dual anchor and seal capabilities
US8926508B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 11, 2010 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Feb 14, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/3486
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cannula assembly includes a cannula adapted for insertion within tissue and having a longitudinal passage extending along a longitudinal axis of the cannula for passage of a surgical instrument. An expandable member is mounted to the cannula and longitudinally spaced from a distal end of the cannula. The expandable member is adapted to expand, upon introduction of fluids therein, in a radially outward direction relative to the longitudinal axis whereby the expandable member engages the tissue to facilitate anchoring of the cannula relative to the tissue, and also to expand in a radially inward direction relative to the longitudinal axis and within the longitudinal passage to engage the surgical instrument positioned within the longitudinal passage to facilitate formation of a seal about the surgical instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.