Patent ID: 9662472
Date: 2017-05-30
CPC Classifications: A61M,A61N

Claim:
1. A method of delivering a therapeutic to a target region in a body, the method comprising: providing a hollow guide tube comprising a lumen therethrough with distal and proximal openings, the guide tube having an outer diameter in a range of 0.5 mm to 1.2 mm; disposing a stylet, having proximal and distal portions, within the guide tube lumen, and extending the stylet distal portion distally from the guide tube distal opening; providing a catheter having a distal portion and releasably coupling the catheter distal portion to the stylet distal portion, the catheter comprising a catheter lumen, the catheter lumen having a diameter in a range of 0.03 mm to 2.11 mm and running from a distal opening to a proximal opening; fixedly attaching a fixed diameter loop only to an exterior of the catheter at a catheter distal portion; releasably coupling the loop to the stylet distal portion; distally inserting the releasably coupled guide tube, stylet and catheter into the body and locating the distal portion of the catheter in the target region; withdrawing the stylet proximally through the tube and releasing the catheter from the stylet; withdrawing the guide tube from the body and leaving the distal opening of the catheter in the target region; coupling the catheter to a source of the therapeutic; and delivering the therapeutic to the target region through the catheter.