Integrated EMG and Optical Oxygen Sensing for Muscle State Detection

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Solution Overview

Problem

Current muscle state detection methods are limited by the need for high-intensity movements and separate collection of blood oxygen, failing to account for multiple dimensions such as electrical signals and oxygen content, and existing devices are often large and non-portable.

Innovation Solution

A device integrating a signal collection module for electromyography signals, a light source detection module emitting different wavelengths, a photosensitive receiver module, and a blood oxygen calculation module to determine muscle oxygen saturation, along with a data statistics module for comprehensive muscle state assessment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a special device is used to measure muscle power through high intensity movement, then muscle state detection accuracy is improved, but device portability deteriorates

Engineering Contradiction:
Improvemuscle state detection accuracyVSAvoiddevice portability
Core Design Contradiction:
Measurement precisionVSWeight of moving object

Solution Approach 1:

The patent combines multiple detection functions (electromyography signal collection and muscle oxygen saturation detection) into a single integrated device. The electromyography module and optical module share a common structure, allowing the device to detect both electrical signals and oxygen saturation simultaneously without requiring separate equipment, thus improving portability while maintaining detection accuracy.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The device is designed to perform multiple functions: collecting electromyography signals, detecting muscle oxygen saturation through light absorption, and comprehensively analyzing muscle state. This multi-functional design replaces the need for separate specialized devices, making the system portable while comprehensive in its assessment capabilities.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Device complexity

If only blood oxygen is collected from a certain muscle group, then device complexity is reduced, but measurement precision deteriorates

Engineering Contradiction:
Improvedetection system complexityVSAvoidmuscle state detection accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The device segments the detection process into two independent but complementary parts: electromyography signal collection and optical oxygen saturation detection. Each module can be independently optimized and calibrated, yet together they provide comprehensive multi-dimensional muscle state information, improving measurement precision without excessive complexity.

Inventive Principle:
Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables accurate and portable muscle state detection by simultaneously collecting electromyography and muscle oxygen saturation data, overcoming limitations of existing methods by providing a compact, integrated solution for multiple muscle state dimensions.

Implementation Method 1

a light source detection module, configured for emitting light with different wavelengths

Methodology Applied
Scientific EffectLight emission: Light

Implementation Method 2

a photosensitive receiver module, configured for receiving light reflected by skin after the light emitted by the light source detection module irradiates skin

Methodology Applied
Scientific EffectLight reception and conversion: Photoelectric Effect

Data Source

PatentUS12440145B2Device for determining muscle state based on electromyography signal and muscle oxygen saturation
Publication Date: 2025.10.14 KINGFAR INTERNATIONAL INC
  • US12440145B2 patent drawing
  • US12440145B2 patent drawing
  • US12440145B2 patent drawing

AI summary

The embodiments of the present disclosure provides a device for determining muscle state based on electromyography signal and muscle oxygen saturation. The devices includes: a signal collection module, configured for collecting a human electromyography signal data; a light source detection module, configured for emitting light with different wavelengths; a photosensitive receiver module, configured for receiving light reflected by skin after the light emitted by the light source detection module irradiates the skin; a blood oxygen calculation module, configured for calculating the muscle oxygen saturation based on the light received by the photosensitive receiver module; and a data statistics module, configured for determining the muscle state based on the human electromyography signal data and the muscle oxygen saturation. In this way, an accurate detection of muscle state is realized.