Radio frequency angioplasty catheter system
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United States of America Patent
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-
Dec 13, 1988
Issued Date -
N/A
app pub date -
Jan 20, 1987
filing date -
Jun 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Plaque removal system with a catheter having a long, generally flexible portion of a first material, an intermediate portion of a second thermally insulating material and a heatable tip portion of a third material. The tip is grounded and focuses radio frequency waves upon the tip to heat the tip. The position of the tip is determined by dispensing a contrast medium out the distal end of the catheter and viewing the vessel and catheter by x-ray. The heated tip is pushed forward through the vessel blockage to vaporize or otherwise disintegrate the plaque, which clears a path through the vessel.
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