Abstract: Objective　To explore the clinical effect of self-made thermoplastic elastomer (TPE) drainage tube in minimally invasive treatment of patients with stage Ⅳ bedsore of ischial tuberosity. Methods　A total of 45 patients with stage Ⅳ bedsore of ischial tuberosity were enrolled between June 2020 and June 2021. According to random number table method, patients were divided into observation group (n=23) and control group (n=22). The control group was given routine treatment and nursing, while observation group was given self-made TPE drainage tube in minimally invasive treatment. The cure rate, wound healing time, hospital stay, medical cost and nursing satisfaction between the two groups were compared. Results　The cure rate in observation group was higher than that in control group (86.96% vs 59.09%, P<0.05). The wound healing time, hospital stay and medical cost in observation group were lower than those in control group (P<0.05), and scores of nursing technique and nursing attitude were higher than those in control group (P<0.05). Conclusion　The self-made TPE drainage tube is conducive to wound healing in patients with stage Ⅳ bedsore of ischial tuberosity, which can shorten wound healing time and hospital stay, and reduce medical cost, with high nursing satisfaction. It is worthy of clinical promotion in primary hospitals.

Key words: TPE drainage tube, 　Stage Ⅳ bedsore of ischial tuberosity, 　 Wound, 　Healing