Guide wire marker technique and coil spring marker technique

Details Guide wire marker technique and coil spring marker technique Guide wire marker technique and coil spring marker technique

1991-02-05

1999-11-16

Hindenburg, Max

Surgery

Diagnostic testing

Flexible catheter guide

A61B 500

Patent

active

059848774

ABSTRACT:
An apparatus and method of providing radiopaque marking for a coil spring. The coil spring will typically be used for medical applications within the cardiovascular system or other region wherein the assistance of a spring guide wire is necessary or desirable. Likely applications may include guide wires, angioplasty catheters, or infusion catheters. The basic spring guide wire is formed of a multifilar (e.g. quadrifilar) structure. At least one of the wires within the quadrifilar structure is drawn from a highly radiopaque material, such as platinum or a platinum alloy. The remaining wires are of a convenient base material such as stainless steel. The resulting quadrifilar structure will provide a degree of radiopacity over its length with one of four strands being highly visible under fluoroscopic energy. Various points along the spring guide wire may be further distinctively marked by changing the number of strands within the multifilar structure. One platinum wire within a trifilar structure is more visible fluoroscopically than in a quadrifilar structure. Similarly, the single platinum wire becomes correspondingly even more visible in bifilar and unifilar structures. These transitions are easily implemented in the coil winding process through the simple termination of one or more of the wires of the base material with a corresponding change in winding pitch of the remaining wire(s). The result is a marking of various points along the spring guide wire without the addition of any stiffness or change in handling characteristics.

REFERENCES:
patent: 4215703 (1980-08-01), Willson
patent: 4538622 (1985-09-01), Samson et al.
patent: 4554929 (1985-11-01), Samson et al.
patent: 4719924 (1988-01-01), Crittenden et al.
patent: 4748986 (1988-06-01), Morrison et al.
patent: 4763647 (1988-08-01), Gambale
patent: 4922924 (1990-05-01), Gambale et al.
patent: 4932419 (1990-06-01), de Toledo
patent: 5174302 (1992-12-01), Palmer

Affiliated with

Also associated with

Rating

Guide wire marker technique and coil spring marker technique does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Guide wire marker technique and coil spring marker technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Guide wire marker technique and coil spring marker technique will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1317787