Ureteral stent

摘要

A ureteral stent is designed to be placed within a patient's ureter to facilitate drainage from the patient's kidneys to the bladder. An elongated portion of the stent includes a length sufficient to extend substantially within the ureter from the kidney to the bladder, and the elongated portion defines a lumen extending therethrough. A retention portion extends from one end of the elongated portion and retains the position of the ureteral stent when placed substantially within the kidney. The retention portion includes an interior space that is in communication with the lumen within the elongated portion and has at least one opening for urine drainage. A flared portion extending from the other end of the elongated portion is positioned within the patient's bladder. The flared portion curves outward and includes an elastic member that maintains the shape of the flared portion when positioned within the bladder.

主权项

1. A ureteral stent, comprising:
an elongated portion defining a longitudinal axis and a lumen; a retention portion extending from a first end portion of the elongated portion and configured to help retain at least a portion of the ureteral stent in a kidney of a patient; a flared portion extending from a second end portion of the elongated portion, the flared portion defining a median axis, the flared portion being tilted with respect to the elongated portion such that the median axis of the flared portion forms an acute angle with the longitudinal axis of the elongated portion; and an elastic member embedded within a sidewall of the flared portion, the elastic member being in a shape of a planar loop, the loop being tilted with respect to the elongated portion, the elastic member being proximally disposed from a distal rim of the flared portion.