Fluoroscopically viewable guidewire

Details Fluoroscopically viewable guidewire Fluoroscopically viewable guidewire

1994-07-01

1995-10-24

Rimell, Sam

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

128697, A61B 500

Patent

active

054601878

ABSTRACT:
A guidewire adapted to be inserted into a vascular vessel or into a catheter that is to be inserted into a vascular vessel or the like. The guidewire comprises a coil of flexible radiotransparent wire having a proximal section and a distal section. The proximal section is formed of a coil of wire having abutting turns and distal section is formed by the same coil of wire with the turns of wire being spaced from each other. A layer of radiopaque material of predetermined length is disposed in a predetermined location on the distal section, the interior of the layer being interstitially disposed within the outer surface of the coil. A hemispherical tip is disposed at the distal end of the distal section. A small braze is made at the juncture between the proximal section and the distal section to prevent spreading of the coils from the abutting relationship in the proximal end of said guidewire.

REFERENCES:
patent: Re34695 (1994-08-01), Mar et al.
patent: 4020829 (1977-05-01), Willson et al.
patent: 4748986 (1988-06-01), Morrison et al.
patent: 4815478 (1989-03-01), Buchbinder et al.
patent: 4922924 (1990-05-01), Gambale et al.
patent: 4953553 (1990-09-01), Tremulis

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