Kidney catheter and ureteral bypass device having the same

摘要

To provide a kidney catheter capable of preventing the distal end portion of a kidney catheter from escaping from the renal pelvic cavity of the kidney even if the suture is removed from the kidney catheter or without bending the distal end portion of the kidney catheter I will provide a.A kidney catheter (3) includes a kidney catheter body (11) and a positioning member (15). The positioning member includes a collar portion 15a and a tubular portion 15b that can be fixed to the kidney. The relative movement between the intermediate portion and the positioning member is restricted by the contact frictional force between the intermediate portion and the cylindrical portion 15 b of the positioning member when the positioning member is fitted to the intermediate portion 11 b of the kidney catheter main body. The maximum value of the frictional force that can control the relative movement is larger than the assumed maximum value of the external force which acts when the kidney catheter is indwelling in the kidney and causes relative movement and can be given only by the hand of a person Is set to a value smaller than the value of the external force.(FIG.