Minnesota Mining and Manufacturing Company

Rodney J Smith

Kent R Struble

Paul G Izen

Steven H Stolle

Michael R Plumb

An infusion pump for regulating fluid flow through the flow path of an IV tubing set for intravenous administration to a patient. The pumping mechanism of the infusion pump comprises a reversible motor having a drive shaft with a wheel mounted thereon. A valve is provided which is adapted for reversibly closing the flow path through the IV tubing set, and a swing arm is provided. The swing arm has a wheel-engaging portion adapted for engaging the wheel, and an actuator portion operatively linked with the valve to actuate the valve. The arrangement is such that, when the motor is turning the drive shaft in a first direction, the swing arm is moved towards a first position where the actuator portion allows the valve to move to its open position to open the flow path. When the motor is reversed to turn the drive shaft in a second direction opposite the first direction, the swing arm is moved to a second position where the actuator portion moves the valve to its closed position to close the flow path. An infusion therapy system and a method of use of the infusion pump are also disclosed.

Infusion pump with reversible motor and method of use

Infusion pump

An infusion pump for regulating the administration of intravenous fluids to a patient. The infusion pump includes a pump housing for holding the pumping mechanism, and a door for holding the IV tubing set in operably position relative to the pumping mechanism. The upper surface of the pump housing has a notch formed therein, and the upper surface of the door is positioned under the notch when the door is closed. The notch is sized and shaped so as to closely grip the IV tubing assembly around a portion of its circumference, so that liquid dripping down along the exterior of the IV tubing set from above the notch tends to be shunted away from the IV tubing. Liquid dripping through the notch tends is diverted onto the upper surface of the door and away from the pumping mechanism.

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Hastings, MN, United States of America

Rodney J Smith