Wearable Ketone Sensor Using Semipermeable Membranes for Accurate Fat Burn Measurement
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Solution Overview
Problem
Conventional wearable devices for monitoring heart rate and fat burning zones do not accurately correlate with actual fat burning, as they rely on lower intensity workouts that result in lower caloric expenditure and inefficient fat breakdown.
Innovation Solution
A wearable device with semipermeable membranes and a ketone sensor using Indium Nitride and platinum nanoparticles to detect acetone vapors released through the skin, allowing for precise measurement of ketone bodies and calculation of fat burn rates during exercise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional heart rate monitoring is used to guide workouts in fat-burning zones, then users can maintain a target heart rate, but the actual fat burning effectiveness is inaccurate and may not achieve intended caloric expenditure
Solution Approach 1:
The patent uses an intermediary substance (ketone bodies/acetone) that directly reflects fat metabolism. Instead of inferring fat burning from heart rate, the device measures ketone bodies released through the skin, which are direct byproducts of fat breakdown. This intermediary provides accurate real-time information about actual fat metabolism rather than relying on indirect heart rate proxies.
Solution Approach 2:
The patent replaces the mechanical/physiological monitoring system (heart rate monitoring) with a chemical detection system. Instead of measuring mechanical heart rate to infer metabolic state, the device uses chemical sensors to directly detect ketone bodies, substituting a more direct measurement approach that actually correlates with fat breakdown.
2Ease of operation
If lower intensity workouts are prescribed based on heart rate zones, then users can maintain lower heart rates, but caloric expenditure and fat breakdown are reduced
Solution Approach 1:
The patent implements a feedback system where the device continuously monitors ketone body levels and provides real-time information about actual fat burning effectiveness. This feedback allows users and trainers to adjust workout intensity dynamically - increasing intensity when ketone production is low (indicating poor fat burning) and optimizing when ketone levels indicate effective fat breakdown, thereby improving caloric expenditure while maintaining ease of operation.
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
The device provides accurate real-time data on fat burn rates, enabling users to optimize their workouts by modifying exercise intensity based on actual ketone body production, thereby enhancing caloric expenditure and fat breakdown.
Implementation Method 1
a first semipermeable membrane adjacent to a first opening and a second semipermeable membrane adjacent to a second opening, wherein said first and second semipermeable membranes are permeable to the passage of ketone bodies but not of liquid water
Implementation Method 2
a ketone sensor comprising Indium Nitride and nanoparticles of platinum coating the sensor
Implementation Method 3
a ketone sensor comprising Indium Nitride and nanoparticles of platinum coating the sensor
Data Source
AI summary
A wearable sensing device having a first and second opening, a first semipermeable membrane having a first surface and a second surface, and a second semipermeable membrane having a third and fourth surface, a ketone body sensor, and a void. The first opening is juxtaposed to the first surface and the second opening is juxtaposed to the third surface. The space between the first and second openings is the void and wherein the ketone body sensor is positioned within the void. Gasses may permeate through the first opening and into the void to contact the sensor and exit the void through the second opening. The sensor may be in direct skin contact with vapor dissipation being enabled through ventilation. Ventilation will be facilitated by microgrooves on the sensor surface or through vent openings in the encasement.