A slip-layered balloon catheter for insertion into a bodily conduit, especially an artery. The catheter comprises a shaft (21) having at least one lumen (26) for delivery of a fluid inflation media and a slip-layered balloon (12) made up of a plurality of layers with a low-friction substance between...http://www.google.co.uk/patents/US5512051?utm_source=gb-gplus-sharePatent US5512051 - Slip-layered catheter balloon