Radio frequency angioplasty catheter system

Details Radio frequency angioplasty catheter system Radio frequency angioplasty catheter system

1987-01-20

1988-12-13

Cohen, Lee S.

Surgery

Truss

Pad

A61B 1738

Patent

active

047903112

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.

REFERENCES:
patent: 4154246 (1979-05-01), LeVeen
patent: 4674481 (1987-06-01), Boddie, Jr.
patent: 4682596 (1987-07-01), Bales, et al.

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