| 摘要 |
An apparatus for providing external assistance for the circulation of blood in a patient wherein a substantially rigid housing encloses a portion of the patient's body, such as the legs, and a closed pneumatic pressure actuation system is used to actuate a pressure medium, at least a portion of which is gaseous, within the housing to cyclically apply pressure to the body in synchronism with the patient's heartbeat. The housing may be fabricated to provide either a fixed volume or a variable volume therein. Means are provided for effecting an efficient transfer of energy from the actuation system to the pressure medium and thence to the patient's body.
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