A recanalizing catheter comprising a very small diameter, elongated, flexible tubular member having a distal end at which a tool is mounted for high speed rotation. A flexible drive assembly is located within the tubular member to power the tool. In one embodiment the drive assembly comprises a spiral...http://www.google.es/patents/US4686982?utm_source=gb-gplus-sharePatente US4686982 - Spiral wire bearing for rotating wire drive catheter
Spiral wire bearing for rotating wire drive catheter
