Device for improving PICC puncture success rate of newborn

The utility model discloses a device for improving the success rate of PICC (Peripherally Inserted Central Catheter) puncture of a newborn. A device for improving the success rate of PICC puncture of newborns comprises a connecting base, a catheter, a test catheter, a puncture needle and a guide-in piece which can be assembled together with the connecting base, the catheter, the test catheter and the puncture needle in a matched mode, the catheter is connected with the output end of the connecting base, a connecting pipe is arranged at the input end of the connecting base, and the test catheter is connected with the guide-in piece. A transfusion connector is arranged at the tail end of the connecting pipe, fins are arranged on the two sides of the connecting seat, first scales are arranged on the catheter in the length direction, and second scales capable of being matched with the first scales are arranged on the test catheter in the length direction. According to the device for improving the PICC puncture su