Abstract:Background and Aims Totally implantable venous access ports (TIVAP) are widely used in patients requiring long-term intravenous therapy. Traditional butterfly needle puncture fixation methods have limitations, including low success rates, increased pain, and risk of needle-stick injury. This study aimed to design an adjustable puncture protection kit for butterfly needles and evaluate its clinical utility using a simulated device.Methods A prospective randomized controlled trial was conducted with 70 patients implanted with upper arm ports in the Hematology Department of Xiangya Hospital, Central South University, from January to December 2024. The patients were divided into a study group and a control group, with 35 cases in each, using a randomized block design. The study group underwent puncture with the simulated adjustable protection kit, while the control group used the traditional finger fixation method. Outcomes compared included first-attempt success rate, vertical puncture rate, pain score, puncture time, and complication rate.Results The baseline characteristics of the two groups were balanced. The study group had significantly higher first-attempt puncture success rate and vertical puncture rate than the control group (94.3% vs. 77.1%; 91.4% vs. 57.1%, both P<0.05). In the experimental group compared with the control group, pain scores were lower (1.80±1.13 vs. 2.94±1.33, P<0.05), and puncture time was shorter [(31.31±9.05) s vs. (41.80±23.97) s, P<0.05]. There was no significant difference in the incidence of puncture-related complications between the two groups (2.9% vs. 14.3%, P>0.05).Conclusion The simulated adjustable butterfly needle puncture protection kit effectively improves puncture success, enhances efficiency, reduces patient pain, and demonstrates good clinical safety. This innovative design provides a promising solution for reducing needle-stick injury risks and optimizing port puncture procedures, although larger, multicenter, and long-term studies are warranted.