| 摘要 |
An ureteral catheter has an elongated shaft and a lumen for drainage, the shaft has a first end with a pigtail and several openings therein, whereby the openings communicate with the lumen and the shaft has a second end with an open tip in the valve mechanism, wherein the open tip on the second end has an extendable folded shaft section and the shaft further comprises a retainer system within the valve mechanism and wherein the retainer system comprises a section, integral with the shaft, which is split into two half shafts, the half shafts being spaced apart from one another, in an unloaded mode, in a direction transverse to the lumen.
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