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US 2025/0229019 A1Published application
Pump with evacuated driver
AssigneeIP Holding Company
InventorPatrick Kenneth Powell
Life of this patent
Estimating the term…
Abstract
A pump includes a container that has an interior volume for holding a substance. There is at least one outlet that is associated with the interior volume for discharging the substance. A driver is disposed in the interior volume. The driver has a stored potential energy that is releasable as kinetic energy and, upon release, the driver expands against the substance in the interior volume and thereby discharge the substance through the at least one outlet.
Claims21
A pump comprising:
- a container having an interior volume for holding a substance;
- at least one outlet associated with the interior volume for discharging the substance;
- and
- a driver disposed in the interior volume, the driver having a stored potential energy that is releasable as kinetic energy and, upon release, the driver being expandable against the substance in the interior volume to thereby discharge the substance through the at least one outlet.
1 more element
A pump comprising:
- a container having an interior volume;
- a substance in the interior volume;
- at least one outlet associated with the interior volume for discharging the substance;
- and
- at least one evacuated driver disposed in the interior volume, the evacuated driver defining a pressure differential that stresses a spring device of the evacuated driver to store a potential energy, the evacuated driver having a pressure equalization port that is operable to release the pressure differential and, upon release, to cause the potential energy in the spring device to convert to kinetic energy such that the evacuated driver expands against the substance in the interior volume and thereby discharge the substance through the at least one outlet.
2 more elements
A method for controlling discharge from a pump, the method comprising:
- providing a pump that includes a container that has an interior volume, a medicament in the interior volume, at least one outlet associated with the interior volume for discharging the medicament, and at least one evacuated driver disposed in the interior volume, the evacuated driver defines a pressure differential that stresses a spring device of the evacuated driver to store a potential energy, the evacuated driver has a pressure equalization port;
- connecting the pump to a patient for delivery of the medicament;
- releasing the pressure differential via the pressure equalization port to cause the potential energy in the spring device to convert to kinetic energy such that the evacuated driver expands against the medicament in the interior volume and thereby discharges the medicament through the at least one outlet, the expansion drawing an inflow into the evacuated driver through the pressure equalization port;
- and
- after delivery of the medicament to the patient, disconnecting the pump from the patient.
2 more elements
Dependencies are inferred from the claim text.