Surgical apparatus, in particular a navigation probe for localizing and treating lesions in a brain

A surgical apparatus for localizing and treating a lesion in a brain, comprising:

• a body member having an anterior end, a posterior end and two grooves, one groove of the two grooves on each of two opposite longitudinal outer faces of the body member and extending in a longitudinal direction of the body member between said anterior end and said posterior end;
• a saddle adapted to securely hold a medical device, the saddle being placed on said body member and having two grips, one grip of the two grips on each of two opposite longitudinal inner faces of the saddle, where each grip extends into a respective groove and is formed with a corresponding shape, so as to fit form locking into said respecive groove to securely mount the saddle on the body member by sliding in said longitudinal direction, and wherein said saddle comprises an open or closed cylinder adapted for mounting a medical device, or a combination of an open and a closed cylinder, a bottom side of the cylinder being formed by an arch comprising an outer shape that reproduces an arched outer shape of the body member;
• and
• a handle connected to a neck, the neck comprising a vertical arm and a horizontal arm, for maneuvering said body member.