Electrotherapy Waveform Adjustment for Bio-Impedance Saturation
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Solution Overview
Problem
Conventional electrotherapy devices fail to account for bio-impedance variations in the human body, leading to saturated or invalid output waveforms due to high bio-impedance and limited battery power, which restricts the effectiveness of current waveforms in electrotherapy treatments.
Innovation Solution
A micro current therapy device with a pulse wave generator and a controller that adjusts the amplitude of the waveform output based on real-time voltage measurements between electrodes, gradually increasing the voltage within a suitable range to prevent saturation and optimize bio-impedance reduction, using a detachable battery pack for convenient charging and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrotherapy devices use fixed amplitude waveforms, then the device structure is simple, but the output waveform becomes saturated or invalid due to high bio-impedance and limited battery power
Solution Approach 1:
The patent implements dynamic adjustment of waveform amplitude through a controller that automatically modifies the output signal based on real-time voltage measurements. The system transitions from fixed amplitude to variable amplitude operation, allowing the waveform to adapt to changing bio-impedance conditions and prevent saturation while maintaining therapeutic effectiveness.
Solution Approach 2:
The patent incorporates a feedback mechanism where the voltage across the electrodes is continuously measured and fed back to the controller. This feedback loop enables the controller to adjust the waveform amplitude in real-time, ensuring the output remains within effective ranges despite variations in body impedance or battery power levels.
2Power
If the waveform amplitude is increased to overcome high bio-impedance, then the therapeutic effect is improved, but the battery power is depleted faster and output saturation occurs
Solution Approach 1:
The system dynamically adjusts waveform amplitude based on actual voltage measurements rather than operating at fixed high power. This allows the device to use higher amplitude only when necessary to overcome elevated bio-impedance, while consuming less energy during normal operation, thereby optimizing the balance between therapeutic effect and battery life.
Solution Approach 2:
The patent changes the operating parameters of the waveform dynamically, adjusting amplitude in response to measured voltage conditions. This parameter adaptation allows the system to maintain effective power delivery when needed while reducing power consumption during periods of lower impedance, preventing both saturation and excessive energy loss.
3Productivity
If real-time voltage measurement and adjustment is implemented, then the electrotherapy effectiveness is optimized, but the device complexity increases
Solution Approach 1:
The patent implements a feedback control system using voltage measurement across the electrodes to automatically adjust waveform parameters. This feedback mechanism optimizes electrotherapy effectiveness by ensuring the output remains within therapeutic ranges while accounting for variations in body impedance, all through automated control rather than manual intervention.
Solution Approach 2:
The system performs self-adjustment of waveform amplitude based on its own voltage measurements without requiring external intervention. The controller automatically monitors the output voltage and modifies the waveform parameters accordingly, enabling the device to optimize its own performance and maintain effectiveness throughout treatment sessions.
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 progressive adjustment of waveform amplitude ensures effective and safe delivery of electrotherapy, maintaining voltage within a suitable range to enhance healing and pain management by dynamically adapting to bio-impedance changes, thereby improving the efficiency and reliability of electrotherapy treatments.
Implementation Method 1
Electrotherapy is the practice of using electronic stimulation to help the body heal and recover after it has been damaged
Implementation Method 2
an analog-to-digital converter (ADC) in electric communication with the first electrode and the second electrode and configured to measure a voltage between the first electrode and the second electrode
Implementation Method 3
Conventional electrotherapy devices fail to account for bio-impedance variations in the human body, leading to saturated or invalid output waveforms due to high bio-impedance
Implementation Method 4
Electrotherapy works to heal in two main ways, reducing swelling and increasing circulation to the affected area
Data Source
AI summary
Battery-driven stimulators for electrotherapy usually equip with a small battery to generate specified current waveforms applied to human body for stimulation. Such current waveforms can easily get into a saturated status due to high bio-impedance and low battery power. The present disclosure provides a system in which the waveform is adjusted according to feedbacks taken from a patient to reduce or avoid saturation.