Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-10894123-B2
Publication Date
2021-01-19
Expiration Date
Abstract
The invention generally provides a fluid delivery system comprising: a reservoir (7); a pumping chamber (8) having a volume, an inlet valve (48), an outlet valve (49) and a membrane (47); an actuator (20); and a drive member (21). The inlet valve and the outlet valve each comprise a passive normally closed one-way check valve. The inlet valve provides selective fluid communication between the pumping chamber volume and the reservoir. Fluid in the reservoir is at substantially ambient pressure. The drive member is operatively coupled to the pumping chamber membrane. Energising the actuator moves the drive member in reciprocating motion and thereby displaces the membrane to change the pumping chamber volume between a minimum volume and a maximum volume. The pumping chamber volume is held at a pressure above the ambient pressure in the reservoir when the actuator is at rest.
Core Innovation
The invention describes a fluid delivery system with a reservoir storing a fluid and a pumping chamber having a volume. The pumping chamber includes an inlet valve providing selective fluid communication between the pumping chamber volume and the reservoir, an outlet valve, and a movable wall whose displacement changes the pumping chamber volume. An actuator moves a drive member in reciprocating motion to displace the movable wall and vary the pumping chamber volume between a minimum volume and a maximum volume.
The system uses the inlet valve and the outlet valve each comprising a one-way check valve. When energized, the actuator is arranged to displace the movable wall from a starting position through uninterrupted filling of the pumping chamber from the reservoir between the minimum volume and the maximum volume, where the starting position corresponds to a pumping chamber volume less than the maximum volume. This arrangement defines uninterrupted filling during energization across the pumping-chamber volume change.
The described infusion implementation defines an infusion system for infusion of a liquid therapeutic product comprising the fluid delivery system. The system includes a fluidically coupled infusion set to the outlet valve, with the outlet valve behavior characterized by a breakthrough pressure condition and cycle-to-cycle pressure maintenance when the actuator is at rest.
Claims Coverage
The provided material includes two independent apparatus claims and one independent method claim. The core coverage centers on a pumping chamber with a movable wall and one-way check valves, combined with an actuator and drive member providing reciprocating displacement and uninterrupted filling from a starting position below the maximum volume between minimum and maximum volumes.
Reciprocating actuator coupled to movable wall for minimum-to-maximum volume variation
The drive member is operatively coupled to the movable wall of the pumping chamber for displacement of the movable wall to vary the pumping chamber volume between a minimum volume and a maximum volume.
Inlet and outlet valves as one-way check valves
The inlet valve and the outlet valve each comprise a one-way check valve.
Uninterrupted filling during energized reciprocating displacement from a starting position
When energized, the actuator is arranged to displace the movable wall from a starting position through uninterrupted filling of the pumping chamber from the reservoir between the minimum volume and maximum volume, where the starting position corresponds to a pumping chamber volume less than the maximum volume.
Infusion system comprising fluid delivery system for liquid therapeutic product infusion
An infusion system for the infusion of a liquid therapeutic product comprising a fluid delivery system comprising a reservoir, a pumping chamber with an inlet valve, outlet valve and movable wall, and an actuator for moving a drive member in reciprocating motion, with the drive member coupled to the movable wall to vary pumping chamber volume between a minimum volume and a maximum volume.
Operating method with storing fluid, energizing reciprocating actuator, and uninterrupted filling
Energizing the actuator to move the drive member in reciprocating motion and thereby displacing the movable wall to change the pumping chamber volume between a minimum volume and a maximum volume, wherein, when energized, the actuator moves the movable wall from a starting position through uninterrupted filling of the pumping chamber from the reservoir between the minimum volume and maximum volume, where the starting position corresponds to a pumping chamber volume less than the maximum volume.
The claims collectively require a reservoir and pumping chamber with a movable wall, inlet and outlet one-way check valves, and a reciprocating actuator/drive member. The inventive distinction is uninterrupted filling of the pumping chamber from the reservoir during energized motion from a starting position below the maximum volume.
Stated Advantages
Not explicitly described in patent.
Documented Applications
An infusion system for the infusion of a liquid therapeutic product.
Interested in licensing this patent?