| 摘要 |
The element (10) has a tubular sleeve (12) including two circumferential segments (16, 18) of different resilience placed along a circumferential direction, where one of the circumferential segments is much stiffer in the circumferential direction than the other of the circumferential segments. The sleeve is in tubular shape, and the circumferential segments extend along a longitudinal extension of the insertion element. The circumferential segments are made of thermoplastic material, metal, polyamide, polyester, polyamide elastomer and polyester elastomer. |
