Adjustable Auricular Electrodes for Consistent Nerve Stimulation

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Solution Overview

Problem

Existing transcutaneous vagus nerve stimulation systems are bulky, uncomfortable, and fail to consistently deliver electrical current over a wide area due to anatomical differences, often causing stimulation-induced perceptions.

Innovation Solution

Auricular nerve stimulation devices with adjustable electrodes and retention elements, featuring spring or magnetic mechanisms, allow for secure and comfortable placement on the ear, ensuring consistent electrode contact and wide-area current delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If transcutaneous vagus nerve stimulation systems are made compact and lightweight, then patient comfort is improved, but the ability to deliver electrical current over a wide area to accommodate anatomical differences deteriorates

Engineering Contradiction:

Improvedevice weightVSAvoidanatomical accommodation

Core Design Contradiction:

Weight of moving objectVSAdaptability or versatility

Solution Approach 1:

The device is divided into a retention element (earbud) and a signal delivery element (electrodes mounted on a support member), allowing the heavy signal generation components to be separated from the ear-contact components. This segmentation enables a compact, lightweight earpiece design while maintaining the capability to deliver electrical current over a wide area through the distributed electrode array.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The signal delivery element is positioned in three-dimensional space relative to the retention element, allowing electrodes to be arranged in a configuration that spans a wide area on the ear's surface. This spatial arrangement accommodates anatomical variations without requiring a bulky device structure.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If electrodes are made fixed in position, then manufacturing precision is improved, but the ability to accommodate various ear anatomies deteriorates

Engineering Contradiction:

Improveelectrode positioningVSAvoidear anatomy accommodation

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The support member is designed with flexibility or adjustability, allowing the signal delivery element to move relative to the retention element. This dynamic positioning capability enables the electrodes to be precisely positioned during manufacturing while also adapting to various ear anatomies during use through adjustment mechanisms or flexible mounting.

Inventive Principle:

Principle #15Dynamics

3Ease of manufacture

If the device structure is simplified, then ease of manufacture is improved, but the ability to maintain consistent electrode contact deteriorates

Engineering Contradiction:

Improvedevice fabricationVSAvoidelectrode contact consistency

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The support member is constructed as a flexible or compliant structure that can conform to the ear's surface geometry. This flexible design simplifies manufacturing compared to rigid precision-machined components while maintaining consistent electrode contact through the ability to adapt to anatomical variations.

Inventive Principle:

Principle #30Flexible shells and thin films

4Power

If stimulation intensity is increased, then therapeutic effectiveness is improved, but stimulation-induced perceptions such as paresthesia worsen

Engineering Contradiction:

Improvestimulation intensityVSAvoidparesthesia

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

Multiple electrodes are distributed across different locations on the ear, allowing the stimulation current to be delivered across a wide area rather than concentrated at a single point. This distributed approach enables effective therapeutic stimulation while reducing the intensity at any local site, thereby minimizing paresthesia and other unwanted sensory perceptions.

Inventive Principle:

Principle #3Local quality

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 devices provide comfortable, repeatable, and patient-specific auricular nerve stimulation with reduced paresthesia, accommodating various ear anatomies and maintaining effective skin-electrode contact.

Implementation Method 1

The adjustment mechanism can be a spring mechanism that biases the electrodes into contact with the first portion of the ear

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

The adjustment mechanism can include one or more magnetic elements that interact with each other to hold the electrodes at the first portion of the ear

Methodology Applied

Scientific EffectMagnetism: Magnetism

Data Source

PatentUS12551700B2Adjustable auricular nerve stimulation devices, and associated systems and methods

Publication Date: 2026.02.17 NEXTSENSE INC

AI summary

Adjustable auricular nerve stimulation devices, and associated systems and methods, are disclosed herein. A representative device for delivering an electrical signal to a subject includes a signal delivery element including at least two electrodes configured to deliver the electrical signal to a first portion of the subject's ear. The device also includes a retention element configured to engage a second portion of the subject's ear. The device further includes an adjustment mechanism permitting movement of the signal delivery element relative to the retention element to place the at least two electrodes in contact with the first portion of the subject's ear.