Process for manufacturing catheters

Details Process for manufacturing catheters Process for manufacturing catheters

1988-08-12

1990-02-27

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

156143, 156149, 264139, 264149, 264150, 264167, 264173, 264174, 264159, B29C 4706

Patent

active

049044311

ABSTRACT:
A method of manufacturing soft tip catheters having inner rigid polymer layers and outer soft, pliable polymer layers. The method involves first extruding the rigid polymer at varying extrusion rates to form a cylindrical body having a depression at one or more prescribed locations. The outer layer is formed by extruding the soft, pliable polymer over the inner to fill in the depressions. The resulting cylindrical body is then cut to form individual catheters having soft tip as defined by a portion of the prescribed locations.

REFERENCES:
patent: 2940126 (1960-06-01), Sheridan
patent: 4138457 (1979-02-01), Rudd et al.
patent: 4551292 (1985-11-01), Fletcher et al.
patent: 4636346 (1987-01-01), Gold et al.
patent: 4665604 (1987-05-01), Dubowik
patent: 4753765 (1988-06-01), Pande
patent: 4764324 (1988-08-01), Burnham

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