Patent ID: 8337436

Claim:
A cardiopulmonary resuscitator, comprising: a panel for supporting a patient; a first belt, disposed at a side of the panel, for wrapping around the chest of the patient; a driving device, connected to the first belt and driven by a pneumatic source to cyclically tighten and loosen the first belt around the chest of the patient comprising: an air cylinder, disposed on the opposite side of the panel, having a piston rod, and receiving the pneumatic power generated from the pneumatic source to drive the piston rod moving back and forth so as to tighten and loosen the first belt around the chest of the patient; a second belt connecting to the two ends of the first belt; and a fastener disposed on the end of the piston rod for catching a part of the second belt; a controlling module, coupled to the pneumatic source, functioning to control and adjust the pneumatic power generated by the pneumatic source; and a plurality of rollers contacting the second belt for providing an action force on the second belt so as to increase the tension of the second belt.