Dilation catheter having an expandable portion showing the elastic expansion of the limited range

摘要

The present invention I provide an inflatable member of the catheter exhibits an elastic expansion of the limited range. And a catheter shaft with an expandable tubular element in the A distal end, said inflatable tubular element in relation to the internal pressure when it is expanded by receiving the live value or go value more pressure expansion In the lumen catheters such as angioplasty catheter adapted to the size of the largest cross-section of said inflatable tubular element is not greater than the maximum cross-sectional size of the catheter shaft, and preferably the expandable tubular element It consists of heat-shrinkable polymer materials such as polyolefin ionomer. .BACKGROUND