Respironics, Inc. P1420 SENSOR

The Radink Sensor uses a combination of a 3-axis accelerometer, a 3-axis gyroscope, and a 3-axis magnetometer to locate a patient's body in 3D space. It is calibrated to the patient's original position immediately prior to the surgery so any movement is tracked and the patient can be returned to the original position at any time during or after the surgery.