| 摘要 |
<p>The invention relates to a medical device having a compressible and expandable, circular cylindrical lattice structure (10), which comprises circumferential segments (20) comprising closed cells (15), wherein the cells (15) are bounded by four respective webs (11, 12, 13, 14), which are coupled to each other at connection points (21, 22, 23, 24) and of which every two oppositely arranged webs (11, 13, 12, 14) are similarly designed and form a web pair (16), wherein the webs (11, 13) of a first web pair (16) have a different shape and/or a different web width at least in some sections than the webs (12, 14) of a second web pair (17), such that the webs (11, 13) of the first web pair (16) can be deformed more greatly than the webs (12, 14) of the second web pair (17) during the transition of the lattice structure (10) from the expanded state to the compressed state, wherein each web (11, 13) of the first web pair (16) is coupled to a respective web (12, 14) of the second web pair (17) in such a way that two connection points (23, 24) oppositely arranged in the longitudinal direction (LR) of the lattice structure (10) are moved away from each other in the circumferential direction (UR) of the lattice structure (10) during the transition of the lattice structure (10) from the expanded state to the compressed state, wherein all cells (15) of a circumferential segment (20) are similarly designed, such that the entire lattice structure (10) twists at least in some sections during the transition from the expanded state to the compressed state. The invention further relates to a treatment system having such a medical device.</p> |
