Surgery – Instruments – Light application
Patent
1990-06-15
1991-12-10
Pellegrino, Stephen C.
Surgery
Instruments
Light application
606 12, 606 16, 606 10, 128398, A61N 506
Patent
active
050714171
ABSTRACT:
Apparatus and methods for laser fusion of biological structures are disclosed employing a laser for delivery of a beam of laser radiation to an anastomotic site, together with a reflectance sensor for measuring light reflected from the site and a controller for monitoring changes in the reflectance of the light of the site and controlling the laser in response to the reflectance changes. In one embodiment, the laser radiation is delivered through a hand-held instrument via an optical fiber. The instrument can also include one or more additional fibers for the delivery of illumination light (which can be broadband or white light or radiation from a laser diode) which is reflected and monitored by the reflectance sensor. Reflectance changes during the course of the fusion operation at one or more wavelengths can be monitored (or compared) to provide an indication of the degree of tissue crosslinking and determine when an optimal state of fusion has occurred.
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Engellenner Thomas J.
Pellegrino Stephen C.
Rare Earth Medical Lasers, Inc.
Shumaker Steven J.
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