This invention is a surgical device. In particular, it is a catheter suitable for accessing a tissue target within the body, typically a target which is accessible through the vascular system. Central to the invention is the use of a stiffener ribbon, typically metallic, wound within the catheter...http://www.google.es/patents/US5795341?utm_source=gb-gplus-sharePatente US5795341 - High performance spiral-wound catheter
