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US 5,588,949 AGranted
Stereoscopic percutaneous visualization system
AssigneeHeartport, Inc.
InventorsCharles S. Taylor, Brian S. Donlon, Timothy R. Machold
Life of this patent
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AssigneeHeartport, Inc.
InventorsCharles S. Taylor, Brian S. Donlon, 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 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.
An improved surgical microscope of the type having a microscope body, lens device attached to the microscope body for magnifying an object image, and an eyepiece attached to the microscope body for viewing the magnified object image, the improvement comprising a supplementary lens and a coupling device attached to the microscope body for retaining the supplementary lens in optical alignment with the lens device, wherein the coupling device comprises a cannula having a passage in which the supplementary lens may be removably positioned, the cannula having a distal end configured for introduction into the body cavity through a percutaneous penetration.
An improved surgical microscope of the type having a microscope body, lens device attached to the microscope body for magnifying an object image, and an eyepiece attached to the microscope body for viewing the magnified object image, the improvement comprising a supplementary lens and a coupling device attached to the microscope body for retaining the supplementary lens in optical alignment with the lens device, the coupling device being configured for introducing the supplementary lens through a percutaneous penetration into a body cavity, wherein the coupling device comprises a sleeve having an interior in which the supplementary lens is positioned, and wherein the sleeve has an aperture in a side thereof in communication with the interior to facilitate interchanging the supplementary lens with other lenses without decoupling the sleeve from the microscope body.
An improved stereoscopic surgical microscope of the type having a microscope body, lens device attached to the microscope body for magnifying an object image, and a binocular eyepiece attached to the microscope body for viewing the magnified object image with both of two eyes, the improvement comprising a cannula mechanism for providing a passage in optical alignment with the lens device, said cannula mechanism having a proximal end attached to the microscope body, and a distal end configured for introduction through a percutaneous penetration into a body cavity and a supplementary lens removably positionable within the passage of the cannula mechanism.
A method of visualizing a body cavity of a patient comprising:
A method of visualizing a body cavity of a patient comprising:
A percutaneous visualization system for direct visualization of a body cavity in a patient, comprising:
A method of visualizing a body cavity of a patient comprising:
Dependencies are inferred from the claim text.