| 摘要 |
A reference pin (1) for use during bone fracture treatment comprising A) a longitudinal shaft (2) with a longitudinal axis (3), a front end (4), a rear end (5) and a through hole (6) penetrating said shaft (2) from said front end (4) to said rear end (5); B) said shaft (2) a rear portion (8) adjoining said rear end (5) and an expandable front portion (7) adjoining said front end (4); said expandable front portion (7) being insertable in a distal locking hole (31) of an intramedullary nail (30) and being reversibly expandable transversely to said longitudinal axis (3); whereby said reference pin (1) further comprises C) a spreading member (9) moveably located in said through hole (6) and being apt for reversibly expanding said expandable front end portion (7). |
