The sliding performance (friction force) test solution of medical catheter/guide wire.sewing thimble

　　Disposable medical catheter/guide wire products are widely used in clinical medicine. In medical clinical nursing, when the interventional diagnosis and treatment catheter is used in the body, it will produce a series of reflections, such as blood coagulation performance, germ absorption performance, and Mechanism damage caused by friction.

　　The low friction of the catheter surface is very necessary. It not only protects the tissue from damage, but also reduces the damage of the catheter surface itself, and it also greatly assists in increasing the life of the catheter. Excessive friction not only makes the patient suffer unbearable pain during the entire process of catheter insertion or withdrawal, but also makes it impossible for the beauty seeker to accurately manipulate the catheter during the actual operation of the catheter, which increases the difficulty coefficient of catheter placement, and even makes it very difficult. It may cause the unsuccessful whole process of intubation.

　　Therefore, in order to reduce the sliding friction when the catheter enters the body, reduce the patient’s pain, and achieve the effects of moisturizing, anti-infectives, anesthetics, etc., a coating is generally applied to the surface of the catheter. After the coating is resolved, the catheter generally has Different performance, the most extensive is the "super slippery" performance. Then, how to treat the rolling performance (namely surface sliding friction) of disposable medical catheter/guide wire coating is the key performance index that the catheter/guide wire manufacturing enterprise must be concerned about.

　　Test Standards and Experimental Instruments At this stage, the rolling performance testing of medical catheters can be tested with a testing instrument that meets the specifications of "YY/T 1536-2017 Non-capillary Intravascular Catheter Surface Rolling Performance Evaluation Standard Experimental Entity Model"; and disposable The inspection of the hydrophilic coated guide wire can be carried out according to the experimental method required in the specification "T CAMDI 021—2019 Disposable Use of Hydrophilic Coated Guide Wire". The larger sliding friction force of the hydrophilic coated guide wire should be low.于0.5N.

　　The experimental instrument can be the C610B catheter guide wire friction performance tester developed and manufactured by Labthink products. The machine equipment is a special tester developed by Labthink for customized product research and development for customers in the medical device industry. The technical expertise is suitable for urinary catheters. , Guide wire, balloon catheter, tracheal catheter, and other disposable non-capillary intravascular catheter guide wire surface friction and rolling performance testing. To comment on the "super-smooth" surface rolling performance of a disposable non-capillary intravascular catheter.

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