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,...http://www.google.de/patents/US5984877?utm_source=gb-gplus-sharePatent US5984877 - Guide wire marker technique and coil spring marker technique
