System and method for estimating a quantity of a blood component in a fluid canister
First Claim
Patent Images
1. A method comprising:
- within an image of a canister, identifying a reference marker on the canister;
selecting an area of the image based on the reference marker;
correlating a portion of the selected area with a fluid level within the canister;
estimating a volume of fluid within the canister based on the fluid level;
extracting a redness value from the selected area;
correlating the redness value with a concentration of red blood cells within the canister; and
estimating a quantity of red blood cells within the canister based on the estimated volume and the concentration of red blood cells within the canister.
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Abstract
A variation of a method for estimating a quantity of a blood component in a fluid canister includes: within an image of a canister, identifying a reference marker on the canister; selecting an area of the image based on the reference marker; correlating a portion of the selected area with a fluid level within the canister; estimating a volume of fluid within the canister based on the fluid level; extracting a feature from the selected area; correlating the extracted featured with a concentration of a blood component within the canister; and estimating a quantity of the blood component within the canister based on the estimated volume and the concentration of the blood component within the canister.
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Citations
20 Claims
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1. A method comprising:
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within an image of a canister, identifying a reference marker on the canister; selecting an area of the image based on the reference marker; correlating a portion of the selected area with a fluid level within the canister; estimating a volume of fluid within the canister based on the fluid level; extracting a redness value from the selected area; correlating the redness value with a concentration of red blood cells within the canister; and estimating a quantity of red blood cells within the canister based on the estimated volume and the concentration of red blood cells within the canister. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method comprising:
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receiving an image of a canister, the canister comprising one of a surgical suction canister, a blood salvage canister, and an intravenous fluid bag; removing a background from the image; correlating a segment of the image with a portion of the canister containing fluid; estimating a volume of fluid within the canister based on the segment; extracting a color feature from a pixel within the segment; correlating the color feature with a concentration of a blood component within the canister; and estimating a content of the blood component within the canister based on the estimated volume of fluid and the concentration of the blood component within the fluid canister. - View Dependent Claims (15, 16, 17, 18)
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19. A system comprising:
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an optical sensor; a processor coupled to the optical sensor; a data storage module storing a library of template images of known concentrations of a blood component; a software module executing on the processor, instructing the optical sensor to capture an image of a canister, and instructing the processor to select an area of the image correlated with a portion of the canister containing fluid, to estimate a volume of fluid within the canister based on the selected area, to extract a feature from the selected area, to correlate the extracted feature with a concentration of the blood component by comparing the extracted feature with a template image in the library of template images, and to estimate a quantity of the blood component within the canister based on the concentration of the blood component; and a display coupled to the processor and receiving instruction from the software module to display the quantity of the blood component within the canister. - View Dependent Claims (20)
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Specification