Patent ID: 9381325
Filing Date: 2016-07-05
CPC Classification: A61L,A61M

Claim Text:
1. A method of forming an elongated, flexible catheter, comprising: forming a shaft having a proximal end, a distal end, and a lumen extending therein, the shaft having an inner layer comprising an amorphous polyamide having a Shore D durometer value of greater than 78, and an outer layer comprising a semi-crystalline polyamide or copolyamide having a Shore D durometer value of less than 76, wherein the outer layer is thinner than the inner layer, the shaft having an increased resistance to kinking as compared to a similar shaft of a single layer of the amorphous polyamide having a Shore D durometer value of greater than 78; and providing a working device disposed on the distal end of the shaft.