Patent ID: 7214203

Claim:
A cardiopulmonary resuscitation apparatus comprising: sternal compression means having a piston for compressing a patient's chest; thoracic constriction means having a chest band for fastening and constricting the chest when said compression means compresses the sternum; and length adjusting means for adjusting the length of said chest band according to the size of a patient's chest, wherein said length adjusting means includes: a bobbin for getting said chest band wounded on; a first ratchet wheel inserted and fixed at a bobbin axle; a first stopper meshed with said first ratchet wheel for preventing reverse rotation of said bobbin; a handle bracket inserted at the bobbin axle for free rotation, coupled with the first stopper to be guided and with a second ratchet wheel coupled at one side thereof; a second stopper meshed with said second ratchet wheel for restricting rotation of said handle bracket, wherein said second stopper, ratchet wheel and handle bracket prevent said chest band from becoming loose or untied; and a spiral spring for giving rotational force to said bobbin.