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Peripheral circulatory assist units designed for sequential compression. These units include a set of pneumatic cuffs and/or stockings with several chambers. The cuffs or chambers inflate and deflate sequentially in a pattern that begins with a chamber enclosing the foot or ankle and continuing to chambers around the calf and thigh. In some units, each chamber reaches the same pressure but at different times; other units apply greater pressure in the more distal chamber and gradually lower pressures in each of the chambers higher on the leg. Sequential peripheral compression is intended to provide better circulatory assistance than conventional peripheral assist units.
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