The present invention relates to a novel thermoplastic polyurethane (TPU) elas-tomer, T-frames made thereof as well as the use of the new TPU in manufactur-ing of T-frames for intrauterine systems for contraception and therapy.本發明係關於一種新穎的熱塑性聚胺甲酸酯(TPU)彈性體,由其製成之T-框架以及該新穎TPU於製造用於避孕及治療的子宮內系統T-框架之用途。