Patent ID: 6293924
Filing Date: 2001-09-25
Classification: A61M

Abstract:
A balloon catheter comprising:a) an elongated catheter shaft having proximal and distal ends, an inflation lumen extending within the catheter shaft, a guidewire port in the distal end of the catheter shaft, and a guidewire lumen in fluid communication with the guidewire port; andb) a balloon on a distal section of the catheter shaft havingi) a first cylindrical inflatable balloon section which is inflatable to a first diameter at a first pressure;ii) a second cylindrical inflatable balloon section, having a first diameter smaller than the first diameter of the first inflatable balloon section at the first pressure; andiii) an interior chamber which is defined at least in part by an inner surface of the first inflatable balloon section and an inner surface of the second inflatable balloon section, and which is in fluid communication with the inflation lumen.