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US 2026/0027293 A1Published application
Flow detection for infusion pump
AssigneeTakeda Pharmaceutical Company Limited
InventorsJohn Kenneth Hainsworth, James Kenneth Douie, Rory James Cahill
Life of this patent
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Abstract
A drug delivery system includes a single-use cassette driven by a reusable pump module. The cassette includes one or more drug delivery bags disposed in a pressure chamber. A pump pressurizes the pressure chamber through a pneumatic interface between the pump module and cassette to dispense the drug from the drug delivery bags into a valve block assembly and through an outlet port.
Claims12
A method for detecting drug flow in a drug delivery system, the method comprising:
- estimating a volume of air in a first chamber, wherein a collapsible drug delivery bag is disposed in the first chamber;
- calculating a rate of pressure decay in the first chamber as a drug flows from the collapsible drug delivery bag;
- and
- determining a calculated drug flow rate based on the rate of pressure decay and the estimated volume of air in the first chamber.
1 more element
Dependencies are inferred from the claim text.