CONVERTIBLE NEPHROURETERAL CATHETER

摘要

A nephroureteral catheter is provided that comprises a detachable portion such that when the detachable portion is removed, the catheter converts into an internal stent. The catheter includes a tube with two retention features, a detachable portion, and an inner tube. The inner tube is removably insertable into both the tube and the detachable portion, and a wire extends through at least a portion of a lumen of the inner tube and through the tube, to keep the pieces attached. The wire may be removed to remove the inner tube and then the detachable portion from the tube. When the detachable portion is attached to the tube, the catheter is a nephroureteral catheter. When the detachable portion is removed from the tube, the catheter becomes a stent.

主权项

1. A catheter comprising:
A tube comprising a cylindrical wall, a first end, a second end, a first retention feature near the first end and a second retention feature near the second end; a detachable portion, wherein the detachable portion is in fluid communication with and is removably attachable to the tube at the second end; an inner tube comprising at least one lumen, wherein the inner tube is removably insertable into both the tube and the detachable portion; and a wire extending through at least a portion of a lumen of the at least one lumen of the inner tube; wherein a portion of the wire is attached to the tube.