Surgery – Radioactive substance applied to body for therapy – Radioactive substance placed within body
Patent
1997-03-06
1999-02-02
Lacyk, John P.
Surgery
Radioactive substance applied to body for therapy
Radioactive substance placed within body
A61N 500
Patent
active
058657207
ABSTRACT:
A device and method for irradiating human body vessel interior walls. One device includes a beta radiation emitting segmented metal tube disposed at the distal end of an elongate shaft. Another device includes a radioactive elastic sleeve mounted on a shaft. The device can be used to inhibit restenosis following angioplasty in coronary arteries. In use, the device can be advanced distally over the balloon portion of a positioned and deflated angioplasty balloon catheter, whereupon the balloon is inflated, pressing the radiation device into close contact with vessel walls. After a desired exposure period, the balloon is deflated, and the device, biased to contract, contracts with the balloon, allowing for ease of withdrawal from the patient.
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Hastings Roger N.
Urick Michael J.
Lacyk John P.
Sci-Med Life Systems, Inc.
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