Pumping fluid delivery systems and methods using force application assembly
AssigneeDEKA Products Limited Partnership
InventorsDean Kamen, Larry B. Gray, Eric Yeaton
Life of this patent
Estimating the term…
Abstract
A method of dispensing a therapeutic fluid from a line includes providing an inlet line connectable to an upstream fluid source. The inlet line is in downstream fluid communication with a pumping chamber. The pumping chamber has a pump outlet. The method also includes actuating a force application assembly so as to restrict retrograde flow of fluid through the inlet while pressurizing the pumping chamber to urge flow through the pump outlet. A corresponding system employs the method.
Claims21
A wearable infusion pump assembly comprising:
- a reservoir assembly having
- a fluid reservoir;
- and
- a fluid path from the reservoir, the fluid path defining a pump area, the pump area having a flexible membrane resiliently deformable into the fluid path;
- a pump assembly releaseably engageable to the reservoir assembly, the pump assembly having
- a pump, the pump contacting the pump area when the reservoir assembly and pump assembly are engaged whereby the pump flexes the flexible membrane;
- the inlet valve is movable in response to a spring bias to an open position whereby the fluid path is open and wherein the inlet valve has a closed position, and
- a pump controller for controlling the pump.
A wearable infusion pump assembly comprising:
- a reservoir assembly comprising
- a reservoir having an infusible fluid;
- the reservoir assembly defining a fluid path from the reservoir to a cannula, the fluid path having a pump area, the pump area defined by a flexible membrane resiliently deformable into the fluid path,
- a pump assembly releaseably engageable to the reservoir assembly, the pump assembly comprising
- a pump contacting the flexible section when the reservoir assembly and pump assembly are engaged, the pump contacts the pump area whereby the pump flexes the flexible section;
- an inlet valve actuator and an outlet valve actuator, the inlet valve actuator is movable in response to a spring bias to an open position whereby the fluid path is open, and has a closed position whereby the fluid path is closed;
- a pump controller for controlling the pump, and
- and whereby the reservoir assembly is wetted and the pump assembly is non-wetted.
A wearable infusion pump assembly comprising;
- a reservoir assembly comprising
- a reservoir;
- a body;
- a flexible membrane, the flexible membrane the body defining a fluid path from the reservoir to a cannula, the fluid path having a pump area, the flexible membrane having a first surface for contact with a fluid and an opposite second surface;
- and
- a pump assembly releaseably engageable to the reservoir assembly, the pump assembly comprising
- a pump, the pump contacting the second surface of the flexible membrane when the pump assembly and reservoir assembly are engaged whereby the pump flexes the flexible member;
- an inlet valve and an outlet valve, the inlet valve is movable in response to a spring bias to an open position whereby the fluid path is open, and has a closed position whereby the fluid path is closed;
- and a pump control for controlling the pump.
Dependencies are inferred from the claim text.