Angiographic catheter and method of manufacture

Details Angiographic catheter and method of manufacture Angiographic catheter and method of manufacture

1975-04-22

1976-06-29

Mancene, Louis G.

Surgery

Truss

Pad

128345, A61M 2500

Patent

active

039659097

ABSTRACT:
There is disclosed a multiwall catheter and a method for the manufacture thereof. The catheter comprises two co-extensive elongated continuous plastic tubes having an intermediate braid sheath extending to within a few inches of the composite tube end where the composite tubing is formed by a modified pultrusion process. The first tube is preformed, encased in a non-metallic braid and pulled through a heated die to form a composite tube. The composite tube is then encased in a second preformed tube and the assembly is pulled through a second heated die to form the multiwall catheter. Multiple mechanical advantages for catheter rotation are provided by three varying diameters on the proximal end of the catheter. Also, the technique of making the outside surface of the catheter of a microporous plastic material to act as an anticoagulant reservoir is described.

REFERENCES:
patent: 3023461 (1962-03-01), Sherman
patent: 3434869 (1969-03-01), Davidson
patent: 3485234 (1969-12-01), Stevens
patent: 3498286 (1970-03-01), Polanyi
patent: 3566874 (1971-03-01), Shepard et al.
patent: 3618614 (1972-10-01), Flynn
patent: 3635223 (1972-01-01), Kieman
patent: 3695921 (1972-10-01), Sheperd et al.
patent: 3695921 (1972-10-01), Shepard et al.
patent: 3721231 (1973-03-01), Hubert
patent: 3819792 (1974-06-01), Ono et al.
patent: 3865666 (1975-02-01), Shoney

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