Abstract: An operating system for a medical device pump has a microprocessor controlling the operation of the pump features in a manner to minimize power consumption and maximize the life of the batteries powering the pump. The microprocessor associated with the medical device pump includes a modulation circuit that operates the pump on an intermittent basis and only when a pressure sensor indicates that the pressure asserted by the pump is at a threshold level. The operation of other sensors are powered only in situations when information from the sensor is needed, while other more essential sensors are operated on an intermittent basis by the modulation circuit. A fill sensor is operated intermittently, while a tilt sensor is only activated when a signal is received from the fill sensor. An optical sensor is only activated when the canister is removed from the pump housing, during which the pump is de-powered.

Abstract: An operating system for a medical device pump has a microprocessor controlling the operation of the pump features in a manner to minimize power consumption and maximize the life of the batteries powering the pump. The microprocessor associated with the medical device pump includes a modulation circuit that operates the pump on an intermittent basis and only when a pressure sensor indicates that the pressure asserted by the pump is at a threshold level. The operation of other sensors are powered only in situations when information from the sensor is needed, while other more essential sensors are operated on an intermittent basis by the modulation circuit. A fill sensor is operated intermittently, while a tilt sensor is only activated when a signal is received from the fill sensor. An optical sensor is only activated when the canister is removed from the pump housing, during which the pump is de-powered.

Abstract: A pump includes a canister for collecting fluids from a negative pressure wound therapy bandage in which the canister incorporates both tilt and fill sensors operatively connected to a microprocessor to control the operation of the pump in drawing fluids from the negative pressure bandage. The fill sensors include a pair of spaced sensor pins that convey a filled signal when fluid within the canister interconnects the two sensor pins. The tilt sensor is housed within the pump housing. The canister is also formed with an optical sensor that provides an indication of proper alignment of the canister on the pump housing. The optical sensor includes a reflector in the canister that reflects an infrared light emanating from the pump housing. When the light reflection is received properly within the pump housing, the canister is properly aligned and mounted on the pump housing.