Patent ID: 6036715
Filing Date: 2000-03-14
Classification: A61B,A61M

Abstract:
A rapid exchange type dilatation catheter comprising:a) an elongated proximal shaft section having a proximal end, a distal end, a distal port in the distal end and an inner lumen extending therein to and in fluid communication with the distal port in the distal end;b) a distal shaft section having a distal end, a distal port in the distal end, a proximal port spaced a short distance proximally from the distal port in the distal shaft section and spaced a substantially greater distance distally from the proximal end of the proximal section and juxtaposed to the distal end of the proximal shaft section, a guidewire receiving lumen which extends within the distal shaft section from the distal port in the distal end thereof to the proximal port, an inner tubular member having proximal and distal ends and defining at least in part the guidewire receiving lumen, an outer tubular member disposed at least in part about the inner tubular member and defining at least in part a second inner lumen in fluid communication with the inner lumen in the proximal shaft section and extending to a location proximal to the distal end of the distal shaft section, and an inflatable member on the distal shaft section which has an interior in fluid communication with the second inner lumen and which has a proximal tapered extremity and a distal tapered extremity, the distal tapered extremity tapering in the distal direction to smaller transverse dimensions to a location on the inner tubular member and being secured thereto; andc) a catheter shaft junction between the proximal and distal shaft sections which comprises the outer tubular member having a proximal extremity which is disposed about the distal end of the proximal shaft section and the proximal end of the inner tubular member.