Ketone Sensor with Semipermeable Membranes for Fat Burn Tracking
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Solution Overview
Problem
Current wearable devices for detecting fat breakdown and caloric expenditure are ineffective as they rely on heart rate zones that do not accurately correlate with actual fat burning, leading to lower caloric expenditure during workouts.
Innovation Solution
A wearable device with semipermeable membranes and a ketone sensor using Indium Nitride and platinum nanoparticles that measures acetone vapors released through the skin, providing accurate data on fat breakdown and caloric expenditure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If heart rate zones are used to guide exercise intensity, then exercise programs are easier to implement, but measurement precision of actual fat burning is poor
Solution Approach 1:
The patent introduces an intermediary substance (acetone/ketone bodies) that mediates between the physiological process of fat breakdown and the detection mechanism. Instead of directly measuring fat breakdown or relying on indirect heart rate proxies, the device detects acetone vapor that is naturally produced during ketogenesis, providing a direct chemical marker of fat metabolism that bridges the gap between physiological reality and measurable output.
Solution Approach 2:
The patent replaces the mechanical/physiological monitoring system (heart rate monitoring) with a chemical detection system (semiconductor sensor detecting acetone vapor). This substitution transitions from measuring cardiovascular response to directly detecting the chemical byproduct of fat metabolism, thereby improving measurement accuracy while maintaining ease of use through automated sensor-based detection.
2Power
If lower intensity exercise programs are used to maintain target heart rate, then heart rate control is achieved, but caloric expenditure is reduced
Solution Approach 1:
The patent implements a feedback mechanism where the semiconductor sensor continuously monitors acetone vapor levels and provides real-time information about actual fat breakdown. This feedback allows users to adjust exercise intensity based on actual metabolic state rather than predetermined heart rate zones, enabling dynamic optimization of caloric expenditure while maintaining accurate tracking of fat metabolism throughout the exercise session.
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 effectively measures ketone bodies, allowing for precise tracking of fat burn during workouts, enabling users to optimize their exercise programs for increased caloric expenditure.
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
ketone vapors flow through the first semipermeable membrane through a first opening and contact the sensor
Data Source
AI summary
A 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.