Thermal atherectomy device

Details Thermal atherectomy device Thermal atherectomy device

1990-10-05

1992-02-11

Howell, Kyle L.

Surgery

Instruments

Heat application

606 29, 606 31, 128401, A61B 1736

Patent

active

050872567

ABSTRACT:
A thermal atherectomy catheter has a tip of high magnetic permeability cylindrical stem with an enlarged head at one end and an enlarged collar at the other end, a coil of wire wrapped about the stem adjacent the head and removed from said collar, a sleeve of ferromagnetic material disposed about the coil and a second sleeve of non-magnetic outer sleeve extending between and of the diameter of the head and collar to define a space between the sleeves whereby the outer sleeve to collar are maintained at a lower temperature than the head.

REFERENCES:
patent: 3903891 (1975-09-01), Brayshaw
patent: 4627436 (1986-12-01), Leckrone
patent: 4643186 (1987-02-01), Rosen et al.
patent: 4654024 (1987-03-01), Crittendon
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patent: 4685458 (1987-08-01), Leckrone
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patent: 4708136 (1987-11-01), Saito
patent: 4745264 (1988-05-01), Carter
patent: 4747405 (1988-05-01), Leckrone
patent: 4748979 (1988-06-01), Hershenson
patent: 4785815 (1988-11-01), Cohen
patent: 4790311 (1988-12-01), Ruiz
patent: 4807620 (1989-02-01), Strul
patent: 4839501 (1989-06-01), Cowell
patent: 4899741 (1990-02-01), Bentley
patent: 4978346 (1990-12-01), Bentley
"Electrical Thermal Angioplasty: Catheter Design Features, In Vitro Tissue Ablation Studies and In Vivo Experimental Findings"; David Y. Lu et al., The American Journal of Cardiology, Nov. 1, 1987, pp. 1117-1123.

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