| 摘要 |
Urinary evagination catheters comprising a rigid tube and a flexible invaginated hose are provided with a novel stopper arrangement in the ported distal end of the hose that remains closed until the hose is fully everted from the tube at which point it automatically opens to permit fluid flow through the catheter. This eliminates the need for a push rod or the like to evert the hose and permits it to be everted simply by fluid pressure applied to the proximal end of the catheter. Methods for producing the new catheters are described. |
