Devices and methods for providing a bolus dose in a microfluidic circuit of a pump
AssigneeCeQur SA
InventorsHermanus Stephanus Pretorius, Robert Farra, Kenneth Barnett, David Piper, Russell Ford, Edward G. Solomon, Peter Holst, Lawrence Smith
Life of this patent
Estimating the term…
Abstract
Devices and methods for administering a medication in fluid form, the systems and methods including a basal flow path and a bolus flow path in parallel to the basal flow path. The bolus flow path includes a combined piston pump and rotatable valve. The piston pump is configured to prevent partial dosing of a bolus dose.
Claims25
A device for administering a medication in fluid form, the device comprising:
- a basal flow path;
- and
- a bolus flow path in parallel to the basal flow path, wherein the bolus flow path comprises a combined piston pump and rotatable valve.
A method for delivering a bolus dose in a microfluidic circuit of an insulin pump, the method comprising:
- rotating, in a first direction, a rotatable valve body comprising a bolus chamber formed therein;
- moving a moveable and rotatable piston at least partially disposed within the bolus chamber and in mechanical communication with the rotatable valve body from a first position to a second position;
- filling the bolus chamber with the bolus dose when the moveable and rotatable piston is in the second position;
- rotating, in a second direction, the rotatable valve body;
- and
- releasing the moveable and rotatable piston to administer the bolus dose.
A device for administering a bolus dose of a medication to a patient, the device comprising:
- a bolus flow path;
- and
- a combined piston pump and rotatable valve disposed along the bolus flow path and configured to prevent partial dosing of a bolus dose, wherein the combined piston pump and rotatable valve comprises
- a base comprising an inlet and an outlet;
- a rotatable valve body rotatably disposed about the base;
- a bolus chamber formed within the rotatable valve body, wherein the bolus chamber comprises an inlet and an outlet;
- a moveable and rotatable piston at least partially disposed within the bolus chamber and in mechanical communication with the rotatable valve body,
- wherein the moveable and rotatable piston comprises a first position and a second position;
- and
- a spring disposed about the moveable and rotatable piston, wherein the spring biases the moveable and rotatable piston in the first position.
Dependencies are inferred from the claim text.