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US 5,957,832 AGranted
Stereoscopic percutaneous visualization system
AssigneeHeartport, Inc.
InventorsCharles S. Taylor, Timothy R. Machold
Life of this patent
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AssigneeHeartport, Inc.
InventorsCharles S. Taylor, Timothy R. Machold
Estimating the term…
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 for wide-angle viewing. Magnification means may be positioned in optical alignment with the optical passage to provide a magnified image of a surgical site.
A visualization system for direct visualization of a patient's body cavity, the system comprising a tubular cannula body having a proximal end, a distal end, and an optical passage therebetween, wherein at least a portion of the optical passage is tapered toward the distal end at a taper angle selected to facilitate stereoscopic visualization of the body cavity through the optical passage;
A percutaneous visualization system for direct visualization of a body cavity in a patient, comprising:
Dependencies are inferred from the claim text.