DIAGNOSTIC DEVICE

PROBLEM TO BE SOLVED: To provide a diagnostic device capable of the supply of oxygen by a patient's own judgment to the symptom of respiratory distress according to cardiac failure of him/herself, the cardiac failure by an excessive load to the heart in an exercise test, an unexpected respiratory distress state such as cardioplegia or the like, and the supply of oxygen by an other person, so that the treatment such as a cardiac massage or an oxygen inhalation can be rapidly performed. SOLUTION: This diagnostic device performs a diagnosis within a shield room by use of a sensor provided within the shield room. This device comprises an oxygen supplying means for supplying oxygen to the vicinity of the patient and a signal transmitting means for automatically supplying the oxygen by the signal transmission from the subject. More specifically, this diagnostic device performs the biological magnetic measurement and diagnosis of the subject within a magnetic shield room for shielding the outside magnet by use of a magnetic sensor equipped with superconductive quantum interference element provided within the shield room.