Patent ID: 6889073

Claim:
A MR compatible mechanical device for positioning an interventional instrument such as a biopsy needle or therapy probe inside a MRI scanner, said positioning device comprising; an instrument platform in which a biopsy or therapy instrument is secured to a mechanical positioning device, said platform being movable to align the instrument trajectory, insert the instrument to the patient and remove the instrument from the patient. a mounting block to control the vertical and horizontal motion of the instrument platform, said mounting block including or attached to a mechanical means for horizontal motion of the instrument platform and another mechanical means for vertical motion of the instrument platform. a base-plate that is attached to a mechanical means that moves said base-plate in a horizontal or vertical direction, a single post or a plurality of posts that support the aforementioned mounting block and physically link said mounting block to the aforementioned base-plate, said support post(s) attached to a mechanical means for moving said mounting block, a plurality of mechanical means for adjusting the position of the aforementioned instrument platform, mounting block and base-plate.