| 摘要 |
The anchor (11) has a part with an expansion sleeve (31) comprising expansion tabs (35) that are separated from each other by elongated slots (34). Another part has an expansion body (21) that is pulled into the expansion sleeve. The expansion body comprises a conical section (22) for radially widening the expansion sleeve, and the conical section comprises edges (24) that run along a longitudinal axis (13). One of the two parts of the anchor comprises even number of the expansion tabs or the edges while another one of the parts comprises odd number of the expansion tabs or the edges. |
