Fleksibel indføringsskede med varierende durometer

摘要

A flexible kink-resistant introducer sheath (10). The introducer sheath includes an inner liner (31), a coil (33) and an outer tube (20). The inner liner includes a passageway (30) extending longitudinally therethrough, where a catheter can be advanced through the passageway. The coil (33) has a plurality of turns positioned longitudinally and compression fitted around the inner liner (31), where the turns have a predetermined spacing therebetween. The outer tube (20) is positioned longitudinally around the coil (33) and the inner liner (31), and is connected to the inner liner through the spaces between the turns. A diameter difference between the inner liner and the catheter is in a range of about 0.0005 to about 0.004 inch (0.013 to about 0.10 mm).