Laser catheter having wide angle sweep

Details Laser catheter having wide angle sweep Laser catheter having wide angle sweep

1987-02-04

1988-12-13

Cohen, Lee S.

Surgery

Truss

Pad

128398, 2191218, 21912185, A61N 501, A61N 506

Patent

active

047903104

ABSTRACT:
An improved laser catheter system includes a flexible catheter tube having proximate and distal ends. The distal end, which is intended for inserting into a patient's artery, is axially split into at least two segments. Optical waveguides extend the length of the catheter tube and terminate at the distal end, with at least one waveguide secured to each of the spreadable segments. A mechanism is provided for spreading the segments while the catheter is implaced in the patient. Conveniently, a balloon catheter may be used by inserting it into the lumen of the laser catheter so that the balloon tip lies within the spreadable segments. By then inflating the balloon, the spreadable segments are spread apart as desired.

REFERENCES:
patent: 1959127 (1934-05-01), Duerme
patent: 2437916 (1943-12-01), Greenwald
patent: 3762400 (1973-10-01), McDonald
patent: 3870036 (1975-03-01), Fiore
patent: 4418688 (1983-12-01), Loeb
patent: 4502468 (1985-03-01), Burgin
Livesay et al. (1985) Herz 10:343-350.
Macruz et al. (1985) Lasers in Surgery and Medicine, 5:199-218.
Ginsburg et al. (1984) Clin. Cardiol., 7:54-58.
Ginsburg et al. (1985) Radiology, 156:619-624.
Takekawa et al. (1985) Nippon Acta Radiologica, 45:1167-1169.

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