Inventors:
Edward J. Arkans - Carlsbad CA
Assignee:
ACI Medical - San Marcos CA
International Classification:
A61B 1700
Abstract:
A vascular assist device which maintains a static graduated pressure as the minimum pressure at all times during use. At least two inflatable chambers which wrap around selected portions of a limb apply elevated pressure to selected portions of a limb to disgorge blood therefrom. The inflatable chambers also apply static pressure which is graduated from distal to proximal along selected portions of a limb, such as from the ankle to the hip. A separate inflatable foot chamber can be included and is not necessarily utilized in conjunction with the compression phases for the ankle, calf, or thigh inflatable chambers. A desired pressure level is generated and maintained in a pressure accumulator, and a pressure regulator and regulator valve control the pressure in the inflatable chambers. The inflatable chambers between the ankle and hip are inflated to a predetermined and uniform dynamic pressure which is maintained in the inflatable chambers for a predetermined amount of time. The pressure is then decreased to a static pressure level which is graduated in pressure from the most distal inflatable chamber to the most proximal inflatable chamber between the ankle and the hip.