Expanding cannula and retractor device and methods of use
US8221317B2 · kind B2 · utility
5Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Jul 4, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/3484
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Expanding cannula and retractor devices and methods of use are provided. An expanding cannula and retractor device includes a first tube, a second tube positioned within the first tube, and an expandable continuous membrane connecting distal portions of the first and second tubes. The membrane can expand into an annulus based on the movement of the second tube relative to the first tube in order to contact tissue and maintain the position of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.