Calf-Mounted TENS Electrode Array With Automatic Intensity Adjustment
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Solution Overview
Problem
Existing TENS devices are cumbersome, require extensive patient training, and struggle to deliver optimal stimulation intensity, leading to inadequate pain relief due to difficulties in managing lead wires, electrode placement, and manual intensity adjustment.
Innovation Solution
A TENS device designed for the upper calf with a pre-configured electrode array and automatic intensity adjustment, utilizing a one-button interface and accelerometer to ensure easy placement and therapeutic stimulation intensity based on electrotactile perception thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional TENS devices use separate electrodes and lead wires for flexibility, then the device can be used for various pain locations, but the device becomes cumbersome and difficult for patients to manage
Solution Approach 1:
The patent combines multiple electrodes and lead wires into a single integrated electrode array that interfaces with the stimulator through a simple connector. This merging eliminates the complexity of managing separate components while maintaining the ability to deliver stimulation to various nerve pathways, thus resolving the contradiction between versatility and ease of operation.
Solution Approach 2:
The electrode array is pre-configured with electrodes positioned at optimal intervals along the lead, allowing patients to simply attach the array to the skin and connect it to the stimulator without requiring training on electrode placement. This preliminary configuration resolves the contradiction by making the device easy to operate while maintaining versatility through the pre-designed electrode pattern.
2Ease of operation
If TENS devices require manual intensity adjustment by patients, then patients can control their own therapy, but patients struggle to determine optimal intensity levels leading to inadequate pain relief
Solution Approach 1:
The device incorporates an automated intensity adjustment system that monitors patient response and automatically optimizes stimulation intensity levels. This self-service mechanism ensures therapeutic effectiveness is maintained while patients retain control through simple interface interactions, resolving the contradiction between patient autonomy and therapeutic reliability.
Solution Approach 2:
The system uses feedback from patient responses (such as habituation detection through accelerometer monitoring) to automatically adjust intensity levels. This feedback loop ensures optimal therapeutic effectiveness is achieved without requiring patients to have expertise in determining appropriate intensity levels, thus resolving the contradiction between ease of operation and reliability.
3Adaptability or versatility
If TENS devices use multiple discrete components for general purpose use, then the device can handle various clinical indications, but extensive patient training and medical supervision are required
Solution Approach 1:
The device achieves multi-functionality through a single integrated electrode array design that can be positioned at different locations on the body to treat various pain conditions. The array's multiple electrodes can be configured for different nerve pathways, providing clinical versatility without requiring multiple separate components, thus resolving the contradiction between adaptability and device complexity.
4Ease of operation
If TENS devices deliver fixed intensity stimulation, then the device is simple to operate, but patients experience habituation leading to decreased pain relief over time
Solution Approach 1:
The device dynamically adjusts stimulation intensity over time based on detected patient habituation, automatically varying the intensity to maintain therapeutic effectiveness. This dynamic adjustment preserves simplicity of operation (patients don't need to manually adjust) while extending the duration of effective pain relief by adapting to changing patient needs, thus resolving the contradiction between ease of operation and duration of effectiveness.
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
Facilitates straightforward use and effective pain relief by automatically setting and adjusting stimulation intensity, minimizing habituation, and reducing the need for medical supervision.
Implementation Method 1
Transcutaneous Electrical Nerve Stimulation (TENS) devices apply electrical currents to a particular area of the human body in order to suppress acute and chronic pain
Implementation Method 2
A TENS device designed for the upper calf with a pre-configured electrode array and automatic intensity adjustment, utilizing a one-button interface and accelerometer
Data Source
AI summary
Apparatus for transcutaneous electrical nerve stimulation in humans, the apparatus comprising:a housing;stimulation means mounted within the housing for electrically stimulating nerves;an electrode array releasably mounted to the housing and connectable to the stimulation means, the electrode array comprising a plurality of electrodes for electrical stimulation of nerves;control means mounted to the housing and electrically connected to the stimulation means for controlling at least one characteristic of the stimulation means;monitoring means mounted to the housing and electrically connected to the stimulation means for monitoring at least one characteristic of the stimulation means;user interface means mounted to the housing and electrically connected to the control means for controlling the stimulation means;display means mounted to the housing and electrically connected to the control means and the monitoring means for displaying the status of the stimulations means; anda strap attached to the housing;wherein the strap is configured to hold the housing, stimulation means and electrode array at a specific anatomical location to treat pain.