Patent ID: 7575554

Claim:
A breathing monitoring device having a multi-point detector, comprising: a housing mounted to a treatment couch for a patient to lie thereon, the housing covering the patient's body including a chest or an abdomen; displacement amount determination means mounted to the housing, for determining displacement amounts of at least a point on the patient's chest and a point of the patient's abdomen, includes a contact-type determination means having probes for abutting at least two points on the chest and the abdomen, respectively, a connection arm connecting the probes, a support arm for supporting the connection arm at a center thereof so as to rock, and a displacement amount indicator extending from an axially attached point of the support arm in a direction opposite the support arm; and respiration level determination means for determining a combined displacement amount that is a combination of the determined displacement amounts of the patient's chest and abdomen due to respiration.