Guiding catheter assembly having a first tubular member formed of a material which has a low coefficient of friction and a second tubular member encasing said first tubular member so that the first tubular member fits tightly within said second tubular member. The second tubular member is formed of an...http://www.google.ca/patents/US4411055?utm_source=gb-gplus-sharePatent US4411055 - Vascular guiding catheter assembly and vascular dilating catheter assembly and a combination thereof and methods for making the same
