Patent ID: 8523875

Claim:
A caliper device for locating a placement of a tunnel to be formed through at least a portion of a bone, comprising: a first member having a distal end comprising a first pick; a second member disposed above the first member, the second member having a distal end comprising a second pick extending beyond the first pick and a proximal end attached to an adjuster, wherein manipulation of the adjuster causes the second member to move from a first position to a second position in order to change a distance the second pick extends beyond the first pick; wherein at least a portion of at least one of the first pick and the second pick are charged with electrical radio frequency, wherein a charged corresponding pick burns a surface of the bone upon contact to create at least a mark indicating the placement of the tunnel to be formed through the bone; and an indication of at least one metric for describing the distance the second pick extends beyond the first pick.