Abstract: A metering system according to the invention may include a portable controller, a metering pump in communication with the portable controller and capable of receiving signals from the portable controller, and at least one process sensor in communication with the portable controller and capable of sending information signals to the portable controller. A method according to the invention may include providing a portable controller, providing a metering pump in communication with the portable controller, providing a process sensor that is capable of sensing an aspect of the process, and is in communication with the portable controller, communicating process information from the process sensor to the portable controller, communicating a control signal from the portable controller to the metering pump, and dispensing the substance from the pump to the process.

Abstract: An apparatus for treating edema by applying pressure to a patient's limb includes a sleeve that is surroundingly engageable with the limb, and the sleeve includes a plurality of flexible open-ended cells for holding respective individually inflatable replaceable bladders. Also, a fluid pump is in fluid communication with each of the bladders. The apparatus also includes a plurality of electrically-operated bladder valves, and each valve is disposed between the pump and a respective one of the bladders for selectively establishing a respective pathway for fluid communication between the pump and the associated bladder. A computer individually controls each valve to variably pressurize the bladders in a variable sequence. The computer also includes means for determining the girth of the limb being treated, and to periodically monitor the apparatus for fluid leaks.

Abstract: An apparatus for treating edema by applying pressure to a patient's limb includes a sleeve that is surroundingly engageable with the limb, and the sleeve includes a plurality of flexible open-ended cells for holding respective individually inflatable replaceable bladders. Also, a fluid pump is in fluid communication with each of the bladders. The apparatus also includes a plurality of electrically-operated bladder valves, and each valve is disposed between the pump and a respective one of the bladders for selectively establishing a respective pathway for fluid communication between the pump and the associated bladder. A computer individually controls each valve to variably pressurize the bladders in a variable sequence. The computer also includes means for determining the girth of the limb being treated, and to periodically monitor the apparatus for fluid leaks.