Devices, Systems, and Methods for Measuring Blood Loss

摘要

Devices, systems, and methods for measuring the blood loss of a subject during a medical procedure. Blood and other fluids are received within a container, and a blood measurement device determines the hemoglobin concentration of the fluid within the container. The blood measurement device can also calculate the estimated blood loss of the subject based upon the determined hemoglobin concentration and the volume of the fluid within the container and the patient's hemoglobin.

主权项

1. A blood measurement device for determining the amount of blood of a subject within a fluid sample, the fluid sample having a volume, the blood measurement device comprising:
a light source configured to selectively generate light at a first wavelength and at a second wavelength different from the first wavelength; at least one photodetector, wherein the light source and the at least one photodetector are configured for positioning in an operative position, wherein, in the operative position, the at least one photodetector is configured to receive at least a portion of the light generated by the light source, and wherein upon positioning of the light source and the at least one photodetector in the operative position, the at least one photodetector is configured to produce a first signal indicative of the absorbance of the fluid sample at the first wavelength and a second signal indicative of the absorbance of the fluid sample at the second wavelength; and a processor operatively coupled to the at least one photodetector, wherein the processor is configured to receive the first and second signals from the at least one photodetector, and wherein, based upon the received first and second signals, the processor is configured to determine the concentration of hemoglobin within the fluid sample.