Patent ID: 7422594

Claim:
A device for installation of a guide wire for a drilling tool in a correct positional arrangement in a bone comprising: a tissue protection sleeve having a longitudinal axis, which has at one end a handle projecting laterally with respect to the sleeve longitudinal axis and a trocar having a longitudinal axis, said trocar for introduction into the tissue protection sleeve from the handle end for rotatable movement within said sleeve, whereby the trocar is rotatable in the tissue protection sleeve and has a central bore hole and a plurality of axially parallel bore holes surrounding said central bore, through which holes, a guide wire can be passed, said trocar having a handle unconnected to the sleeve handle extending laterally to the trocar longitudinal axis which can be oriented by rotation about the sleeve longitudinal axis in an approximately parallel direction to the sleeve handle, said trocar handle having one end which engages an end of the trocar situated outside of the tissue protection sleeve, so that the normally freely rotatable trocar is fixed in the direction of rotation relative to the tissue protection sleeve when both handles are manually clamped against each other by deflecting at least one of the handles the trocar having a shaft extending along the longitudinal axis with a knob and a flange mounted thereon on opposite sides of the trocar handle, the trocar handle having an annular portion for rotatably receiving the shaft intermediate the knob and the flange, the annular portion of the trocar handle is rotatable, axially moveable and tiltable with respect to the trocar shaft longitudinal axis.