Stereoscopic percutaneous visualization system
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United States of America Patent
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-
Dec 31, 1996
Issued Date -
N/A
app pub date -
Apr 13, 1994
filing date -
Oct 8, 1993
priority date (Note) -
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status (Latency Note)
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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.
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