Tunnel Kraft catheter with polyester sleeve belt for hemodialysis

The invention discloses a tunnel Koff catheter with a polyester sleeve for hemodialysis in the technical field of Koff catheters.The tunnel Koff catheter comprises a catheter body, a connecting piece is arranged at one end of the catheter body, the end, away from the catheter body, of the connecting piece is communicated with two extension tubes, the extension tubes are communicated with the catheter body through the connecting piece, and the two extension tubes are each provided with a cut-off clamp; the ends, away from the connecting piece, of the two extension pipes are each provided with a connector, the pipe body is further sleeved with a clamping sleeve, the clamping sleeve is oval, and the clamping sleeve is close to the connecting piece. The connecting piece comprises a fixing block, fixing wings are fixedly connected to the two ends of the fixing block, a pressure reduction sleeve is arranged at the end, close to the pipe body, of the fixing block, and connectors corresponding to the extension pipes