The importance of catheter tip flash less

The morphology of the catheter tip plays a significant role in catheter functions. Depending on the morphology of the catheter tip, the insertion force is improved when the catheter is inserted into the body and damage to the blood vessel wall is reduced when the inserted catheter moves in the blood vessel. In addition, the push ability of the catheter improves according to the morphology of the catheter tip when the catheter moves through a curved blood vessel.

The occurrence of flash at the catheter tip is still one of the biggest problems in the tip-forming process. Flash refers to the thin polymer generated at the end of the catheter tip. Flash is dropped by the bloodstream or due to friction with other medical devices used with the catheter and remains in the body. Flash, which has fallen from the body, moves around the body through the bloodstream and blocks narrow blood vessels, such as capillaries, causing polymer embolism. Polymer embolism occurs when a polymeric embolism substance blocks blood vessels.

The flash of the catheter tip and coating layer of the polymeric hydrophilic coating are separated by blood flow or physical contact and move along the bloodstream, decompose into fine polymer particles, and accumulate in small blood vessels. Polymer embolisms cause inflammation, hemorrhage, tissue necrosis, and skin discoloration. Depending on the location of the embolus, it can cause pulmonary embolism, cerebral embolism, myocardial infarction, etc., and in severe cases, coma or death.

Therefore, the design of the mold and tip-forming process to minimize flash is very important. CCMelt study a lot and formed a mature system from material, temperature to reduce the flash.

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