Patent ID: 7670332
Filing Date: 2010-03-02
Classification: A61M,Y10T

Abstract:
1. A valve for preventing reflux of fluids in a ureteral stent comprising: a tube having a first end, a second end, and a socket disposed at the second end, the tube defining a length extending along a central axis from the first end of the tube to the second end of the tube, the tube defining a lumen extending from the first end of the tube to the second end of the tube, the lumen having a length substantially equal to the length defined by the tube; a shaft having a proximal end and a distal end, the distal end of the shaft being disposed in the socket; and a stopper attached to the proximal end of the shaft and movable between a first position in which the stopper does not occlude the lumen and a second position in which the stopper occludes the lumen, the stopper moving from the first position to the second position in response to retrograde pressure in a bladder of a patient, the stopper having a lip configured to bias the stopper in the first position.