Omni-directional position surgical guide instrument and omni-directional position unit structure thereof

The present invention discloses an omni-directional position surgical guide instrument and an omni-directional position unit structure thereof. The surgical guide instrument includes a surgical instrument and the omni-directional position unit which couples with the surgical instrument. The omni-directional position unit is configured as a pyramid and a plurality of reflectors are deposited on vertexes of the pyramid. Because the reflectors of the omni-directional position unit can be arranged as a stereo-pyramidal manner, the omni-directional position unit can be deposited at any place of the surgical instrument for detecting. While the omni-directional position unit is connected to the surgical instrument, the surgical instrument can be detected correctly by the surgical guide system and thereby the complexity of a surgery will be reduced.