Moving basal engine for a fluid delivery device
AssigneeZealand Pharma A/S
InventorRobert R. Gonnelli
Life of this patent
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Abstract
A fluid delivery device comprises a fluid reservoir for containing medicament. The fluid reservoir is sealed proximate one end with a sliding seal piston. A delivery path is configured to fluidly couple the fluid reservoir and a patient wearing the fluid delivery device. A basal engine mechanism is configured to directly or indirectly move the sliding seal piston in the fluid reservoir at a controlled basal rate. A bolus mechanism configured to move the basal engine relative to the fluid reservoir and directly or indirectly move the sliding seal piston in the fluid reservoir a discrete bolus amount at a time.
Claims19
A fluid delivery device comprising:
- a housing including a fluid reservoir for containing medicament, the fluid reservoir being sealed proximate one end with a sliding seal piston;
- a delivery path configured to fluidly couple the fluid reservoir and a patient wearing the fluid delivery device;
- a basal actuator coupled to a proximal side of the sliding seal piston, the basal actuator including an electrochemical device configured to volumetrically expand the basal actuator in at least one dimension while being charged or discharged and configured to directly or indirectly move the sliding seal piston in the fluid reservoir at a controlled basal rate;
- a bolus actuator coupled to a proximal end of the basal actuator and configured to move the basal actuator relative to the fluid reservoir and move the sliding seal piston in the fluid reservoir a limited discrete bolus amount at a time;
- and
- a limiting mechanism engaged with the bolus actuator,
- wherein the movement of the basal actuator relative to the fluid reservoir is limited to a distal direction.
A fluid delivery device comprising:
- a housing including a fluid reservoir configured to contain medicament;
- a delivery path configured to fluidly couple the fluid reservoir and a patient wearing the fluid delivery device;
- a basal actuator sealing one end of the fluid reservoir and sealingly and slidingly coupled to an inside surface of the fluid reservoir, the basal actuator including an electrochemical device configured to volumetrically expand the basal actuator in at least one dimension while being charged or discharged to reduce a volume of the fluid reservoir at a controlled basal rate;
- a bolus actuator coupled to a proximal end of the basal actuator and configured to move the basal actuator relative to the fluid reservoir and move the basal actuator in the fluid reservoir a limited discrete bolus amount at a time;
- and
- a limiting mechanism engaged with the bolus actuator,
- wherein the movement of the basal actuator relative to the fluid reservoir is limited to a distal direction.
Dependencies are inferred from the claim text.