Surgery – Instruments – Light application
Patent
1995-06-06
1997-07-01
Buiz, Michael
Surgery
Instruments
Light application
606 15, 606 7, 606 19, A61B 1736
Patent
active
056432534
ABSTRACT:
Phototherapeutic instruments are disclosed having integral stopper devices which limit the penetration of an optical fiber during tissue penetrating phototherapy. In one preferred embodiment, a fluted outer sheath is disposed about an internal optical fiber. The fluted sheath is configured to expand during penetration of the optical fiber into a patient's tissue. As the fluted elements expand, the present a much larger cross-sectional area which resists further penetration of the instrument beyond a predetermined desirable distance. The invention is useful in limiting an optically-transmissive fiber's penetration and, thereby, reduce the possibility of perforation of a body lumen or organ. The invention is particularly useful in placing a ablative laser radiation device into the ventricle of the heart when performing arrhythmia-correcting laser ablative procedures or when revascularizing the heart percutaneously. The stopper devices limit penetration and stabilize the optically-transmissive tip during such procedures.
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U.S. application No. 08/303,605, Sinofsky, filed Sep. 9, 1994.
Baxter Lincoln S.
Farr Norman
Sinofsky Edward L.
Buiz Michael
Engellenner Thomas J.
Leonardo Mark S.
Rare Earth Medical, Inc.
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