Abstract: A medical apparatus to increase vascular blood flow in the lower extremities of the patient is presented. The medical apparatus is designed to increase vascular blood flow by applying a compressive force to specific regions of the foot, ankle, and/or calf. To achieve this end, the present invention has a foot compression portion and a calf compression portion. The two portions are connected by a severable connection. The severable connection allows the foot portion and calf portion to be used together, or allows the calf portion to be used alone. The foot compression portion is adapted to exert an upward compressive force to the sole of the foot from in front of the heel and extending past the ball of the foot under the phalanges, a downward compressive force in front of the tarsal region of the foot, a downward compressive force in the upper tarsal region of the foot, and a compressive force around the Achilles tendon.

Abstract: A medical apparatus to increase vascular blood flow in the lower extremities of the patient is presented. The medical apparatus is designed to increase vascular blood flow by applying a compressive force to specific regions of the foot, ankle, and/or calf. To achieve this end, the present invention has a foot compression portion and a calf compression portion. The two portions are connected by a severable connection. The severable connection allows the foot portion and calf portion to be used together, or allows the calf portion to be used alone. The foot compression portion is adapted to exert an upward compressive force to the sole of the foot from in front of the heel and extending past the ball of the foot under the phalanges, a downward compressive force in front of the tarsal region of the foot, a downward compressive force in the upper tarsal region of the foot, and a compressive force around the Achilles tendon.

Abstract: An apparatus for ensuring proper engagement between connectors in external pneumatic compression devices. Two or more compression bladders are connected via tubing to a controller by a mated connector unit. Each mated connector includes an upstream portion and a downstream portion. The upstream portion includes a shut-off valve per individually addressed bladder. The downstream portion includes structure which defeats or opens the shut-off valve in the upstream connector and allows for fluid flow. Internally and externally, the mated connectors are configured for reciprocal engagement. Even if visual orientation of the connectors fails, the reciprocal structure of the connectors prevents incorrect engagement therebetween.

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.

Abstract: An apparatus and a method are provided for vascular examination of a limb by inflation of a flexible-walled pneumatic chamber mounted to the limb and calibration of the pressure within the chamber in units of volume. Calibration is accomplished by inflating the chamber to a preselected reference pressure, altering the volume of the chamber, and measuring the calibration pressure at the altered volume. The calibration pressure is stored for use off-line in scaling subsequent pressure fluctuations as changes in limb volume.

Abstract: A fluid pump is disclosed herein having a frame defining an internal pumping chamber in combination with a flexible diaphragm. A top ring retains the diaphragm in position on the frame and includes a central area carrying an actuation mechanism for cyclically maintaining the fluid pumping operation in the pumping chamber. Inlet and outlet valves are disposed in the frame and interconnected with the pumping chamber to complete the pump. The actuation mechanism includes a motor-driven eccentric cam coupled to the central diaphragm area with top surface attachment only.