Elliptical retractor
US8308755B2 · kind B2 · utility
5Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2007 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Feb 10, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A retractor for use in laparoscopic procedures includes an upper retractor ring, a lower retractor ring, and a retractor sheath extending between the upper retractor ring and the lower retractor ring to form a tubular passageway through which instruments or a medical practitioner's hands may pass during a medical procedure. The retractor sheath includes an elliptical passageway extending between lower retractor ring and the upper retractor ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.