The utility model relates to a medical catheter, which comprises a thermoplastic polyurethane pipe body surrounded by a transfusion channel, a PVC layer surrounded by an overall diameter outward surface of the thermoplastic polyurethane pipe body, and a thermoplastic polyurethane layer surrounded by an overall diameter outward surface of the PVC layer, wherein the thermoplastic polyurethane pipe body, the PVC layer and the thermoplastic polyurethane layer are jointly charged by three layers A three-layer coauthorized structure is formed together, by which the creation has the advantages of both thermoplastic polyurethane material and PVC material.一種醫用導管，包含：一熱塑性聚氨酯管體，圍覆形成一輸液通道；一聚氯乙烯層，圍覆於熱塑性聚氨酯管體之整體徑向外表面；以及一熱塑性聚氨酯層，圍覆於聚氯乙烯層之整體徑向外表面，其中熱塑性聚氨酯管體、聚氯乙烯層及熱塑性聚氨酯層係為經三層共押所共同形成的一三層共押成型結構體，藉此，本創作兼具熱塑性聚氨酯材料以及聚氯乙烯材料的優點。
