Patent ID: 8257409
Filing Date: 2012-09-04
Classification: A61B

Abstract:
1. A reference pin for use during a bone fracture treatment, comprising: a longitudinal shaft with a longitudinal axis, a front end, a rear end and a through hole penetrating the shaft from the front end to the rear end, the shaft including a rear portion adjoining the rear end and an expandable front portion adjoining the front end, the expandable front portion being insertable in a distal locking hole of an intramedullary nail and being reversibly expandable transversely to the longitudinal axis, the through hole having a continuously enlarging section adjoining the front end of the shaft, wherein the continuously enlarging section enlarges towards the front end; and a spreading member moveably located in the through hole and being apt for reversibly expanding the expandable front end portion, wherein the expandable front portion is reversibly expandable within a range between 0.3 mm and 0.5 mm.