| 摘要 |
<p>A surgical instrument comprising a pair of spacer block portions (14, 18; 16, 20) each having a first surface (22) and a second surface (24) which is inclined relative to the first surface (22). The spacer block portions (14, 18; 16, 20) are coupled together to form a composite spacer block (6; 8) such that the second surfaces (24) are in contact and are arranged to slide relative to one another parallel to a first sliding axis to adjust the thickness of the composite spacer block (6; 8) between the first surfaces (22). The second surfaces (24) of the spacer block portions (14, 18; 16, 20) comprise corresponding structures (38, 40) which when engaged with one another are arranged to resist sliding movement between the spacer block portions (14, 18; 16, 20) parallel to the first sliding axis.</p> |
