Catheter

          Catheters bring good news to patients who need indwelling catheterization. They become more widely used in the clinic. However, with the increase of its application, it is more and more common to pick up the catheter. Especially for the long-term indwelling catheter, sometimes the balloon lumen will be blocked due to the aging of rubber, which may cause serious complications when forcibly pulled out. To prevent the aging of the contact surface between silicone rubber and the human body, it is necessary to conduct oxygen plasma treatment on its surface. The changes in surface structure, properties, and chemical composition of natural rubber latex catheter before and after oxygen plasma treatment were examined by scanning electron microscopy (SEM), infrared spectroscopy (FTIR-ATR), and surface contact angle. The results showed that the surface of natural rubber latex catheter was slippery after oxygen plasma treatment, and the surface contact angle was reduced from 84° to 67° without harmful groups on the surface It is an effective surface treatment method. Also, plasma treatment can be used