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US 12,214,155 B2Granted
Fluid injector system volume compensation system and method
AssigneeBayer HealthCare LLC
InventorsMichael Mcdermott, Michael Spohn, William Barone, Chelsea Marsh
Life of this patent
Estimating the term…
Abstract
A system and method for correcting a volume of fluid delivered by a fluid injector during an injection procedure is described. The method included determining and compensating for a volume factor associated with compliance of the fluid injector system and correcting for the volume by one of over-driving the distance that the drive member travels in a fluid reservoir, under-driving the distance that the drive member travels in the fluid reservoir, or lengthening or shortening a fluid delivery time.
Claims20
A method for correcting a volume of fluid delivered by a fluid injector system during an injection procedure, the method comprising:
- determining a fluid volume of a first fluid in at least one fluid reservoir of the fluid injector system;
- determining a pressure at which a first programmed volume of the first fluid is to be injected;
- calculating a first system volume compliance of the at least one fluid reservoir, one or more fluid injector mechanical components associated with the fluid injector system, and one or more tubing system components based on:
- the volume of the first fluid, the pressure of the first fluid, and one or more correction factors based on capacitance characteristics of the at least one fluid reservoir and one or more tubing system components, fluid properties of the first fluid, and a component slack of the one or more fluid injector mechanical components associated with the fluid injector system;
- calculating a first volume compliance factor of the first fluid in the at least one fluid reservoir based on the first programmed volume of the first fluid and the calculated first system volume compliance;
- and
- compensating for the first volume compliance factor to deliver the first programmed volume by one of:
- over-driving a distance that a first drive member travels in the at least one fluid reservoir, under-driving the distance that the first drive member travels in the at least one fluid reservoir, increasing a delivery time of the first fluid in the at least one fluid reservoir, and decreasing the delivery time of the first fluid in the at least one fluid reservoir.
5 more elements
A fluid delivery system comprising:
- a fluid injector;
- at least one first fluid reservoir configured to contain a first fluid;
- at least one first drive member configured to drive the first fluid from the at least one first fluid reservoir;
- and
- a controller in operable communication with the at least one first drive member, wherein the controller comprises computer readable memory containing instructions that, when executed by the controller, cause the controller to:
- determine a fluid volume of the first fluid in at least one first fluid reservoir;
- determine a pressure at which a first programmed volume of the first fluid is to be injected;
- calculate a first system volume compliance of the at least one first fluid reservoir, one or more fluid injector mechanical components associated with the fluid injector, and one or more tubing system components based on:
- the volume of the first fluid, the pressure of the first fluid, and one or more correction factors based on capacitance characteristics of the at least one first fluid reservoir and one or more tubing system components, fluid properties of the first fluid, and a component slack of the one or more fluid injector mechanical components associated with the fluid injector;
- calculate a first volume compliance factor of the first fluid in the at least one first fluid reservoir based on the first programmed volume of the first fluid and the calculated first system volume compliance;
- and
- compensate for the first volume compliance factor to deliver the first programmed volume by one of:
- over-driving a distance that the at least one first drive member travels in the at least one fluid reservoir, under-driving the distance that the at least one first drive member travels in the at least one fluid reservoir, increasing a delivery time of the first fluid in the at least one fluid reservoir, and decreasing the delivery time of the first fluid in the at least one fluid reservoir.
10 more elements
Dependencies are inferred from the claim text.