Mechanisms for generating improved hemodynamics during CPR
Devices and methods for substantially closing the airway of a patient during cardiopulmonary resuscitation. A chest compression device designed to compress substantially the entire chest of a patient is used to perform chest compression on the patient. As the chest of the patient is compressed, the airway of the patient is substantially closed, thereby preventing the flow of gasses through the airway. Because gasses cannot flow through the airway of the patient, intrathoracic pressure increases during chest compressions relative to manual chest compressions or other point chest compressions.
1 . A method of substantially preventing gasses from flowing through an airway of a patient during chest compressions, said method comprising the steps of:
providing a chest compression device comprising:
a belt; and
a belt tightening mechanism;
operably connecting the chest compression device to the patient;
compressing the chest of the patient repetitively with the chest compression device;
using force sufficient to effect cardiopulmonary resuscitation while causing the airway of the patient to close at least partially during the compression phase of cardiopulmonary resuscitation; and
allowing the chest to expand and the airway to expand between compressions.
2 . A device for compressing the chest of a patient, said device comprising:
a belt;
a belt tightening mechanism; and
a control system programmed to:
cause the belt tightening mechanism to compresses the chest of the patient repetitively to effect CPR;
apply force to a sufficient degree causing the airway of the patient to close at least partially when the belt compresses the chest; and
allow the chest and the airway to expand between compressions.