Patent ID: 8504139

Claim:
An instrument tracking device for cooperating with an instrument during a surgical procedure, the instrument having an elongated housing extending along a first longitudinal axis and including a working member at a distal tip, the instrument tracking device comprising: a body having a distal end and a proximal end, the body forming an opening through the body along a second longitudinal axis, the opening defining a passthrough in the body from the distal end to the proximal end; a first tracking coil disposed around the passthrough in the body and defining a first tracking coil axis that is substantially coaxial with the second longitudinal axis, the first tracking coil generating an output signal indicative of a position of the working member; and a connection mechanism cooperating between the elongated housing of the instrument and the body that secures the body to the elongated housing of the instrument upon passing at least a portion of the elongated housing through the passthrough of the body in an assembled position.