Non-Invasive Glucose Sensor Using Mechanical Pulse Density
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Solution Overview
Problem
Current glucose monitoring technologies for diabetics are invasive, require frequent needle changes, and suffer from discomfort and inaccuracy due to the difficulty in distinguishing glucose levels from water absorption in non-invasive infrared methods.
Innovation Solution
A non-invasive sensor system that generates mechanical pulses or vibrations through the skin to measure the relative density of body fluids, using a transducer and microprocessor to calculate glucose levels without extracting fluid, with calibration by standard glucose meters and wireless data transmission for continuous monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If invasive needle-based sensors are used to continuously monitor glucose levels, then continuous monitoring capability is achieved, but patient comfort deteriorates and device reliability worsens due to inflammation and infection risks
Solution Approach 1:
The patent replaces the mechanical needle penetration system with an optical detection system. Instead of physically inserting a needle to access interstitial fluid, the invention uses infrared light to non-invasively detect glucose levels through the skin, thereby eliminating the harmful mechanical intrusion while maintaining continuous monitoring capability
Solution Approach 2:
The patent introduces infrared light as an intermediary medium to transmit information about glucose levels without direct contact with body fluids. The infrared radiation acts as a mediator that carries physiological information through the skin barrier, enabling continuous monitoring without invasive fluid extraction
2Ease of operation
If infrared light absorption is used to non-invasively detect glucose levels, then patient comfort is improved, but measurement precision deteriorates because water absorption in the infrared spectrum is much greater than glucose absorption
Solution Approach 1:
The patent applies local quality by selecting specific infrared wavelength bands where glucose absorption characteristics are enhanced relative to water. Instead of using broad-spectrum infrared light, the invention targets localized spectral regions with optimal glucose-to-water absorption ratio, thereby improving measurement precision while maintaining non-invasive operation
Solution Approach 2:
The patent changes the parameter of infrared wavelength selection to optimize glucose detection. By adjusting the spectral parameters to specific wavelengths where glucose has characteristic absorption peaks and water absorption is minimized, the invention overcomes the dominant water absorption interference and achieves accurate non-invasive glucose measurement
3Measurement precision
If traditional blood sample methods are used to measure glucose levels, then measurement precision is achieved, but loss of time increases due to the need for frequent manual sampling and testing
Solution Approach 1:
The patent implements continuous action by maintaining constant infrared light emission and detection through the skin. The system continuously monitors glucose levels without interruption, eliminating the discrete sampling intervals of traditional methods. This continuous optical measurement maintains measurement precision while dramatically reducing time loss by providing real-time glucose data
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 continuous, non-invasive glucose monitoring with accurate detection of glucose level changes, preventing hypoglycemia by showing rate of change and providing warnings, reducing discomfort and invasive procedures.
Implementation Method 1
the pulse generating device generates a pulse in the form of a mechanical pulse, a vibrating force
Implementation Method 2
a transducer for registration of the speed of the pulse as a function of the body fluid and the elasticity of the skin
Implementation Method 3
generated by an electromagnet or a magneto-strictive material
Implementation Method 4
generated by an electromagnet or a magneto-strictive material
Implementation Method 5
detection of the pulse is recorded by a detection coil
Implementation Method 6
detection of the pulse is recorded by a detection coil or by a variable capacitor, light diode, accelerometer
Data Source
AI summary
The present invention relates to a sensor device for measuring tensile variation against a membrane separating a liquid such as the skin on humans and animals and any other membrane separating a liquid on one of its sides.