Pressure management method for a drug delivery device
AssigneeBecton, Dickinson and Company
InventorsJean-Marc Volle, Steve Beguin, Simon O'Reilly, Raphael Marcelpoil, Cedrick Orny
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Abstract
A method of pressure management for a drug delivery device including a pump, a fluid line, and a power source, includes: delivering fluid through the fluid line via the pump; determining a parameter indicative of pressure within the fluid line; determining whether the parameter indicative of pressure within the fluid line exceeds a pressure threshold level; pausing the delivery of fluid through the fluid line until a predetermined condition is satisfied; and resuming the delivery of the fluid through the fluid line after the predetermined condition is satisfied.
Claims20
A method of pressure management for a drug delivery device comprising a pump, a fluid line, and a power source, the method comprising:
- a) delivering fluid through the fluid line via the pump;
- b) determining a parameter indicative of pressure within the fluid line;
- c) determining whether the parameter is indicative of pressure within the fluid line exceeds a pressure threshold level;
- d) pausing the delivery of fluid through the fluid line until a predetermined condition is satisfied;
- and
- e) resuming the delivery of the fluid through the fluid line after the predetermined condition is satisfied,
- wherein the parameter indicative of pressure within the fluid line is determined by measuring a current of the drug delivery device during actuation of the pump, and wherein the measuring of the current of the drug delivery device comprises subtracting a reference current value from a peak current value during an actuation cycle of the pump to determine a stroke current value.
A drug delivery device comprising:
- a power source;
- a reservoir configured to receive a fluid;
- a fluid line in fluid communication with the reservoir;
- a pump configured to deliver the fluid from the reservoir to the fluid line;
- and
- a microcontroller comprising at least one processor programmed or configured to cause the device to:
- deliver fluid through the fluid line via the pump;
- determine a parameter indicative of pressure within the fluid line;
- determine whether the parameter indicative of pressure within the fluid line exceeds a pressure threshold level;
- pause the delivery of fluid through the fluid line until a predetermined condition is satisfied;
- and
- resume the delivery of the fluid through the fluid line after the predetermined condition is satisfied,
- wherein the parameter indicative of pressure within the fluid line is determined by measuring a current of the drug delivery device during actuation of the pump, and wherein the measuring of the current of the drug delivery device comprises subtracting a reference current value from a peak current value during an actuation cycle of the pump to determine a stroke current value.
A computer program product for a method of pressure management for a drug delivery device comprising a microcontroller, a reservoir, a pump, a fluid line, and a power source, the computer program product comprising at least one non-transitory computer-readable medium including program instructions that, when executed by the microcontroller, cause the drug delivery device to:
- deliver fluid through the fluid line via the pump;
- determine a parameter indicative of pressure within the fluid line;
- determine whether the pressure within the fluid line exceeds a pressure threshold level;
- pause the delivery of fluid through the fluid line until a predetermined condition is satisfied;
- and
- resume the delivery of the fluid through the fluid line after the predetermined condition is satisfied,
- wherein the parameter indicative of pressure within the fluid line is determined by measuring a current of the drug delivery device during actuation of the pump, and wherein the measuring of the current of the drug delivery device comprises subtracting a reference current value from a peak current value during an actuation cycle of the pump to determine a stroke current value.
Dependencies are inferred from the claim text.