4results about "Ureters" patented technology

Medical implants that include a containment layer surrounding, or surrounded by, a biodegradable medical device provide the benefit that pieces formed during degradation of the medical device are held within a constrained place and thus do not causes injury to a hosts.

Systems, apparatus, and methods for delivering an implant into the prostatic urethra are provided. Embodiments of the delivery system may include a delivery device for insertion into a patient and a proximal control device for controlling the release of the implant from the delivery device.

A stent for insertion into the lumen of an anatomical vessel or duct including a helical coil embedded in a polymer tube. The helical coil includes expandable part, which is able to be in a compressed or expended configuration. The polymer tube is radially rigid to prevent reduction of the diameter of the turns of the helical coil when the stent is twisted.

The present invention provides an anti-reflux ureteral stent. A leaflet-shaped structure is arranged on a side wall of the stent at a bladder end to achieve a one-way drainage function, and the leaflet-shaped structure defines a lumen of the stent in a cross-section along with a tube wall of the stent. The outer surface of the leaflet-shaped structure is larger than the inner surface thereof. When the external pressure of the leaflet-shaped structure is larger than the internal pressure of the leaflet-shaped structure, the leaflet-shaped structure is attached to the tube wall, and the tube wall supports the leaflet-shaped structure, thereby sealing the lumen. The present invention can achieve, by means of the leaflet-shaped structure, one-way drainage in the ureteral stent, so as to effectively achieve an anti-reflux effect.