| 摘要 |
<p>A ureteral drainage stent (100) is designed to be placed in a patient's ureter and extend into a patient's bladder. An elongated tubular segment (102) includes a distal retention structure (104) for placement in the renal cavity, and a proximal retention structure (107) constructed at least partly from a foam material and for placement in a urinary bladder. A central lumen (101) connects at least one opening in the distal retention structure to the foam proximal retention structure. The foam proximal retention structure typically extends along at least a lower part of the ureter, across the ureteral-vesical junction, and into the bladder, to provide drainage through multiple networked channels.</p> |
