Abstract: The disclosure concerns a collar device configured for attachment with an image receptor of an X-ray or similar imaging system, the collar device including a radiolucent bar and linear light source, the combination of which being used for patient positioning, identification of surgical entry point and trajectory guidance of instrumentation.

Abstract: A system for guiding a surgical instrument during a medical procedure is disclosed. The system includes a collar device having both a radiopaque marker and a laser light source, and an instrument-guiding device having at least one inclinometer and is coupled to a surgical instrument for use during the medical procedure. The collar device is configured to couple to a radiographic imaging system and providing a laser replication of a surgical reference plane, and the instrument-guiding device is configured for alignment with the surgical reference plane and an instrument angle for guiding the surgical instrument along a surgical axis between a skin entry point and a target.

Abstract: A medical device having a body having a first bubble vane for measuring angle in one plane; said body having a second bubble vane for measuring an angle in another plane; said first bubble vane having angle indicia; said second bubble vane having angle indicia; said one plane being the in a different plane from said another plane and the angles in the two planes providing the entry point for an incision for the placement of an orthopedic device.