초록 ▼

An interventional catheter for angioplasty and the like, comprising a catheter tube formed of two superposed layers of materials different from one another. The inner layer is comprised of a low friction nonkinkable material to avoid risk of clogging of a guide wire in the longitudinal lumen. The ou

An interventional catheter for angioplasty and the like, comprising a catheter tube formed of two superposed layers of materials different from one another. The inner layer is comprised of a low friction nonkinkable material to avoid risk of clogging of a guide wire in the longitudinal lumen. The outer layer is comprised of a material with higher friction coefficient than the material forming the inner layer. The balloon is welded at its distal end to the outer layer of the catheter tube. The proximal end of the balloon is welded to a tube surrounding the catheter tube.

대표청구항 ▼

[ I claim:] [1.] A method of making a catheter comprising:(a) coextruding an elongate tube having a proximal portion and a distal portion, the tube comprising:(i) an inner layer forming a lumen and comprising polymeric material having a first coefficient of friction; and(ii) an outer layer forming a

[ I claim:] [1.] A method of making a catheter comprising:(a) coextruding an elongate tube having a proximal portion and a distal portion, the tube comprising:(i) an inner layer forming a lumen and comprising polymeric material having a first coefficient of friction; and(ii) an outer layer forming an outer surface of the tubular body and comprising polymeric material having a second coefficient of friction which is greater than the first coefficient of friction; and(b) welding a discrete balloon to the outer surface at the proximal portion of the tube.