Medical double-channel guiding catheter

The invention discloses a medical double-channel guide catheter, relates to the technical field of medical instruments, and provides the following scheme aiming at the problem that a blind channel between an existing catheter sheath and a central venous catheter is easy to form wall-attached thrombus: the medical double-channel guide catheter comprises an inner tube and an outer tube sleeving the outer side of the inner tube, and a backflow channel is formed between the inner tube and the outer tube; one end of the inner pipe and one end of the outer pipe are connected with a Y-shaped connector, a first channel and a second channel, the first channel and the second channel are fixedly communicated with two channels of the Y-shaped connector respectively, the first channel is communicated with the backflow channel, the second channel is communicated with the inner pipe, one channel is communicated with the inner pipe, and the other channel is communicated with the backflow channel. Normal saline is introduced