Air-in-line prevention algorithm
AssigneeCareFusion 303, Inc.
InventorsMichael K. WORKMAN, Susan HORVATH
Life of this patent
Estimating the term…
Abstract
An infusion device receives an instruction indicating a total volume to be infused (VTBI) of a fluid for a pumping element to pump through a fluid tube into a patient connector. The infusion device pumps the fluid according to a pumping rate, and causes 2024/102124 an air-in-line sensor to measure an amount of air within the fluid tube according to a sensitivity level. The infusion device determines that a first VTBI threshold has been met, and outputs a notification or reduces the pumping rate. The infusion device determines that second VTBI threshold has been met, and increases the sensitivity level of the air-in-line sensor based on the first and second VTBI thresholds having been met.
Claims20
An infusion device, comprising:
- a pumping element configured to pump a fluid through a fluid tube into a patient connector;
- an air-in-line sensor configured to measure air within the fluid tube;
- a display;
- a processor;
- and
- a non-transitory computer readable medium comprising instructions that, when executed by the processor, cause the infusion device to:
- receive an instruction indicating a total volume to be infused (VTBI) of the fluid;
- cause the pumping element to pump the fluid through the fluid tube according to a pumping rate and subject to a safety threshold amount of air within the fluid tube;
- and
- cause the air-in-line sensor to measure an amount of the air within the fluid tube according to a sensitivity level;
- determine that a first VTBI threshold has been met, the first VTBI threshold corresponding to a first predetermined amount of the VTBI having been pumped or remaining to be pumped;
- in response to determining that the first VTBI threshold has been met, output a notification on the display or reduce the pumping rate of the pumping element;
- after outputting the notification or reducing the pumping rate, determine that a second VTBI threshold has been met, the second VTBI threshold corresponding to a second predetermined amount of the VTBI having been pumped or remaining to be pumped;
- and
- in response to determining that the first and second VTBI thresholds have been met, increase the sensitivity level of the air-in-line sensor.
A method of operating an infusion device to reduce air-in-line alarms, the method comprising:
- receiving an instruction at a processor of the infusion device indicating a total volume to be infused (VTBI) of a fluid for a pumping element of the infusion device to pump through a fluid tube into a patient connector;
- causing the pumping element to pump the fluid through the fluid tube according to a pumping rate and subject to a safety threshold amount of air within the fluid tube;
- causing an air-in-line sensor of the infusion device to measure an amount of air within the fluid tube according to a sensitivity level;
- determining that a first VTBI threshold has been met, the first VTBI threshold corresponding to a first predetermined amount of the VTBI having been pumped or remaining to be pumped;
- in response to determining that the first VTBI threshold has been met, outputting a notification on the display or reducing the pumping rate of the pumping element;
- after outputting the notification or reducing the pumping rate, determining that a second VTBI threshold has been met, the second VTBI threshold corresponding to a second predetermined amount of the VTBI having been pumped or remaining to be pumped;
- and
- in response to determining that the first and second VTBI thresholds have been met, increasing the sensitivity level of the air-in-line sensor.
Dependencies are inferred from the claim text.