Fixation clamp with thumbwheel

摘要

A fixation clamp, more particularly for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements, has at least one clamping assembly having at least one reception opening to accommodate a fixation element along the longitudinal axis of the reception opening. At least one locking element extends through the clamping assembly which locking element provides a clamping force to clamp the fixation element upon tensioning the locking element. The fixation clamp further comprises an actuation element which is in connection with the locking element such that the locking element is actuateable by means of the actuation element, and the actuation element is designed such that it is detachable from the locking element after use and that remounting onto the locking element is prevented after having detached the actuation element from the locking element.

主权项

1. A fixation clamp for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements, said clamp comprising:
at least one clamping assembly having at least one reception to accommodate a fixation element along the longitudinal axis of the reception and at least one locking element extending through the clamping assembly, the locking element having a middle axis and a drive portion, the locking element drive portion having an outer surface spaced a distance outwardly from the middle axis, the locking element is capable of providing a clamping force to clamp the fixation element upon tensioning the locking element and, an actuation element having at least one elastically deflectable latching element, the at least one latching element in an undeflected state extends inwardly towards the locking element middle axis a distance greater than the distance from the middle axis to the outer surface of the locking element drive portion, the actuation element can be connected with the locking element when the at least one latching element is deflected outwardly from the middle axis a distance greater than the distance from the middle axis to the outer surface of the locking element drive portion such that the locking element is actuateable by means of the actuation element, wherein the actuation element is designed such that it is detachable from the locking element after use and that remounting onto the locking element is prevented by the at least one latching element in an undeflected state after having detached the actuation element from the locking element, wherein the locking element comprises at least one recess in which the at least one latching element engages when the actuation element is mounted in the locking element drive portion after being deflected outwardly from the middle axis.