Method of manufacturing catheter guidewire

Details Method of manufacturing catheter guidewire Method of manufacturing catheter guidewire

1976-11-04

1978-03-28

DiPalma, Victor A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

72 46, 128 2M, 128 205R, 427 2, 427178, B21F 3500, B23P 1300

Patent

active

040807061

ABSTRACT:
There is disclosed a catheter guidewire and a method for manufacturing the guidewire. In one embodiment, the guidewire is developed from a coiled semi-rectangular flatwire which has been coated with a surface lubricant such as Teflon prior to winding. In another embodiment, the flatwire is wound, polished by abrasion and then electropolished. A combination safety core wire extends longitudinally within the coiled guidewire and is welded to the respective ends of the guidewire. The safety core wire is a cylindrical wire whose uniform main body is smoothly tapered into an ultra-flexible flattened distal tip by means of combined mechanical metal forming and electro-etching techniques.

REFERENCES:
patent: 2118631 (1938-05-01), Wappler
patent: 2948954 (1960-08-01), Ramsa
patent: 3452742 (1969-07-01), Muller
patent: 3528406 (1970-09-01), Jeckel et al.
patent: 3711917 (1973-01-01), Baumgras
patent: 3731671 (1973-05-01), Mageoh
patent: 3749086 (1973-07-01), Kline et al.
patent: 3789841 (1974-02-01), Antoshkiw
patent: 3906938 (1975-09-01), Fleischhacker
patent: 3973556 (1976-08-01), Fleischhacker

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