Stereoscopic percutaneous visualization system
US5588949A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1994 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Apr 13, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3616
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides a percutaneous visualization system for direct, stereoscopic visualization of a body cavity during minimally-invasive surgical procedures. The visualization system includes a cannula having a distal end, a proximal end, and a passage extending therebetween. The passage is configured to allow stereoscopic vision therethrough, and is preferably tapered from the proximal end to the distal end. A sleeve is positionable in the passage of the cannula, the sleeve having an optical passage also configured to allow stereoscopic vision, preferably by tapering. A lens may be disposed in the optical passage of the sleeve tier wide-angle viewing. Magnification means may be positioned in optical alignment with the optical passage to provide a magnified image of a surgical site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.