Surgery – Instruments – Heat application
Patent
1990-04-17
1992-03-24
Cohen, Lee S.
Surgery
Instruments
Heat application
128401, 128804, A61B 1738
Patent
active
050984292
ABSTRACT:
Disclosed are three forms of an angioplastic instrument employing a ferrite material inductively-heated from outside a patient's body to soften plaque occluding a lumen of a vas of the patient. In a first form, the angioplastic instrument is comprised solely of a thin guide wire having a ferrite-coated tip at its distal end. Each of the other two forms of the angioplastic instrument heats the liquid filling the balloon of an angioplastic balloon catheter with the inductively-heated ferrite material. By utilizing ferrite materials having different Curie temperatures, the amount of heating can be adjusted for a particular treatment protocol. Also, by limiting the value of the Curie temperature of the ferrite material to a safe value, the tissue underlying the vas is inherently protected from undue injury due to overheating.
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Cohen Lee S.
MMTC Inc.
Pfaffle Krista
Seligsohn George J.
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