CPR compression device with cooling system and battery removal detection

A system for performing chest compressions on a patient, said system comprising:

• a motor having a motor shaft, a first end, a second end, a first aperture proximate the first end, and a second aperture proximate the second end;
• a transmission proximate the motor and operatively coupled to the motor;
• a compression device housing for housing the motor, said compression device housing configured to support the patient during operation of the system, said compression device housing forming an enclosure substantially enclosing the motor and having an intake aperture for intake of cooling airflow and an exhaust aperture for exhaust of cooling airflow;
• and
• a fan disposed within the compression device housing, said fan disposed proximate the motor between the motor and one of the intake aperture or the exhaust aperture of the compression device housing,
• wherein the fan is arranged to draw or force air through the motor and/or draw or force air out the exhaust aperture of the compression device housing;
• wherein the intake aperture is disposed in a lateral portion of the compression device housing on a first lateral side of the compression device housing,
• wherein the exhaust aperture is disposed in a lateral portion of the compression device housing on a second lateral side of the compression device housing, and
• wherein the compression device housing is configured with one or more baffles or walls to direct air, driven or drawn by the fan, into the first aperture in the motor proximate the first end of the motor, whereby air flows from the first lateral side of the compression device housing to the second lateral side of the compression device housing through the motor, the one or more baffles or walls configured to direct air in at least two flow paths in opposing directions to direct air towards the motor and the transmission, respectively.