US 12,440,145 B2
Device for determining muscle state based on electromyography signal and muscle oxygen saturation
Qichao Zhao, Beijing (CN); Ran Yang, Beijing (CN); and Zhao Li, Beijing (CN)
Assigned to KINGFAR INTERNATIONAL INC., Beijing (CN)
Filed by KINGFAR INTERNATIONAL INC., Beijing (CN)
Filed on Dec. 22, 2022, as Appl. No. 18/086,726.
Application 18/086,726 is a continuation of application No. PCT/CN2022/096641, filed on Jun. 1, 2022.
Claims priority of application No. 202111667416.5 (CN), filed on Dec. 31, 2021.
Prior Publication US 2023/0210439 A1, Jul. 6, 2023
Int. Cl. A61B 5/397 (2021.01); A61B 5/1455 (2006.01); A61B 5/313 (2021.01)
CPC A61B 5/397 (2021.01) [A61B 5/14551 (2013.01); A61B 5/313 (2021.01)] 5 Claims
OG exemplary drawing
 
1. A device for determining muscle state based on an electromyography signal and a muscle oxygen saturation, comprising:
a signal collection module, configured for collecting human electromyography signal data;
a plurality of light source detection modules, each configured for emitting light with different wavelengths, wherein the plurality of light source detection modules comprise a plurality of infrared light emission units and a plurality of red light emission units;
a plurality of photosensitive receiver modules, configured for receiving light reflected by skin after the light emitted by the plurality of light source detection modules irradiates the skin, wherein a sensitive range of a receiving wavelength of each of the plurality of photosensitive receiver modules is set according to a wavelength range of each of the plurality of infrared light emission units and the plurality of red light emission units, a distance between the plurality of light source detection modules and the plurality of photosensitive receiver modules is variable, an optimal distance of each of the plurality of photosensitive receiver modules is determined by setting multiple distance parameters, and different light source detection modules of the plurality of light source detection modules and different photosensitive receiver modules of the plurality of photosensitive receiver modules are turned on to measure blood oxygen and muscle oxygen;
a blood oxygen calculation module, configured for calculating a muscle oxygen saturation based on the light received by the plurality of photosensitive receiver modules, wherein the blood oxygen calculation module is further configured to:
convert a light intensity of the light received by the plurality of photosensitive receiver modules to a current signal;
input the current signal to a transimpedance amplifier to obtain a voltage signal; and
calculate a muscle oxygen content based on the voltage signal and a ratio of a red light intensity to an infrared light intensity,
wherein the muscle oxygen saturation comprises muscle oxygen values and blood oxygen values; and
a data statistics module, configured for determining a muscle state based on the human electromyography signal data and the muscle oxygen saturation.