What kind of material is TPE? What characteristics does it have? Is it safe for medical TPE to stay in the human body for a long time?

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TPE is a thermoplastic elastomer material, you should be talking about a wider range of TPE. There are SBS, SEBS, POE, TPU base materials and so on. Mainly high elasticity, softness, thermoplasticity, and most importantly, it meets many environmental protection requirements in Europe and America. For medical TPE, the main problem is biocompatibility and dissolution. At present, TPU is the better biocompatibility, and other biocompatibility remains to be discussed. At least TPU still has a considerable range of applications in the built-in catheter. Compared with silica gel, the built-in human body is not easy to adhere to human tissues. But the specific long-term to how long can not be determined.