Heymed Medical EEG Electrode Solutions: Dry Electrodes, Wet Electrodes, EEG Caps and Accessories

Heymed Medical has developed a configurable EEG electrode product range for medical device manufacturers, neurotechnology companies, research institutions, and developers of wearable brain-monitoring systems.

The product range includes dry EEG electrodes, wet EEG electrodes, EEG caps, electrode lead wires, connectors, adapters, and related accessories. Each solution can be customized according to the customer’s recording equipment, channel configuration, wearing structure, connector interface, and intended application.

Why EEG Electrode Selection Matters

An EEG system records low-level electrical signals from the scalp. The electrode, cable and connector form the signal path between the user and the recording equipment.

Electrode contact, cable movement, shielding, connector stability and channel configuration can all influence the quality and repeatability of the acquired signal.

Selecting an EEG electrode should therefore involve more than choosing an electrode based on appearance or dimensions. Product teams should evaluate the complete system, including:

• Scalp location and presence of hair
• Recording duration
• User movement during recording
• Electrode contact method
• Required setup and cleaning procedures
• Amplifier and input impedance requirements
• Cable routing and strain relief
• Connector interface and pinout
• Number and arrangement of recording channels
• Reusable or disposable product requirements

Dry EEG Electrode Solutions

Dry EEG electrodes are designed to acquire signals without the routine application of conductive gel or paste.

Their gel-free configuration can reduce preparation and cleanup requirements, making them relevant to wearable EEG devices, portable monitoring equipment, repeated measurement, research systems, and products intended for easier setup.

However, dry electrode performance depends on more than the electrode material. Contact pressure, probe geometry, scalp location, hair, cable movement and amplifier design should all be evaluated as part of the complete system.

Heymed Medical can support customization of dry EEG electrodes in areas including:

• Electrode shape and dimensions
• Contact or probe structure
• Electrode mounting method
• Housing and mechanical support
• Cable attachment and strain relief
• Connector type and pinout
• Electrode position identification
• Reusable product structure
• Packaging and private labeling

The final electrode design should be verified with the customer’s recording hardware and intended use conditions.

Wet EEG Electrode Solutions

Wet EEG electrodes use conductive gel, paste or another conductive medium to support the electrical interface between the electrode and the scalp.

They are commonly used in traditional EEG recording systems and applications where controlled electrode preparation and established recording procedures are available.

Wet electrode development may involve:

• Cup or disc electrode structures
• Conductive contact material options
• Gel or paste application requirements
• Cable length and branch configuration
• Connector and terminal selection
• Electrode labeling and channel identification
• Reusable or application-specific structures
• Cleaning and maintenance requirements

Because electrode performance depends on the complete recording system, the choice between dry and wet electrodes should be based on the intended application, setup process, recording environment, user requirements and verification plan.

Custom EEG Caps

EEG caps provide a structured method for positioning multiple electrodes around the scalp.

Heymed Medical can support EEG cap development based on customer-defined electrode layouts, head sizes, channel quantities, cable routing, connector interfaces and equipment compatibility requirements.

Customizable EEG cap elements can include:

• Electrode quantity and channel arrangement
• Standard or customer-defined positioning layouts
• Cap sizes and adjustable structures
• Dry or wet electrode integration
• Electrode holders and mounting components
• Cable routing and channel grouping
• Color-coded electrode identification
• Main connector and device interface
• Chin straps or positioning accessories
• Product labels, instructions and packaging

For systems based on the international 10–20 electrode placement framework or a proprietary channel arrangement, the electrode layout and channel identification should be confirmed before prototype development.

EEG Electrode Cables, Connectors and Accessories

In addition to electrodes and caps, Heymed Medical provides supporting connection components for EEG systems.

Available development categories include:

• Single-channel EEG electrode lead wires
• Multi-channel EEG cable assemblies
• Electrode extension cables
• EEG cap connection cables
• Splitter and breakout cable assemblies
• Device-specific adapters
• Touch-proof and customer-specified connectors
• Snap, cup and electrode connection components
• Cable identification labels and color coding
• Replacement cables and related accessories

Cable structures can be customized according to channel quantity, conductor arrangement, shielding requirements, cable flexibility, connector pinout, device interface and operating environment.

Applications for Custom EEG Electrode Solutions

Heymed Medical EEG electrode products can be developed for different equipment and product platforms, including:

• Clinical and professional EEG equipment
• Portable EEG recording systems
• Wearable EEG devices
• Sleep-monitoring equipment
• Neurophysiological monitoring systems
• Brain-computer interface research
• University and laboratory research systems
• Multi-channel biosignal acquisition equipment
• Custom neurological and healthcare devices

The suitability of each electrode configuration must be evaluated and validated by the device manufacturer for its intended application.

EEG Electrode OEM and ODM Customization

Heymed Medical supports EEG product development from initial requirement evaluation through prototype sampling and scalable manufacturing.

Our OEM and ODM support can include:

• Application and equipment requirement review
• Electrode structure evaluation
• Contact material selection
• Cable and connector development
• Channel and pinout configuration
• 2D and 3D drawing preparation
• Prototype and sample production
• Electrical and mechanical testing
• Assembly and process development
• Custom labeling and packaging
• Production under an ISO 13485 quality management system

To begin an EEG electrode project, customers can provide the recording device model, connector information, pinout, channel quantity, electrode positions, cable requirements, intended contact method, reference samples, drawings, or application details.

Choosing the Right EEG Electrode Configuration

Before confirming a dry electrode, wet electrode or EEG cap, product teams should answer several key questions:

• Where will each electrode contact the scalp?
• Will the electrode be used on a hairy or hairless location?
• Is conductive gel or paste acceptable?
• How long will each recording session last?
• Will the user remain still or move during recording?
• How many channels are required?
• What connector and pinout does the recording device use?
• Is the product intended for repeated or single use?
• What cleaning and material requirements apply?
• What electrical, mechanical and usability tests are required?

Answering these questions early helps reduce repeated prototype changes and supports the development of a more appropriate electrode and cable structure.

About Heymed Medical

Heymed Medical develops and manufactures medical and healthcare connectivity products, including dry and wet EEG electrodes, EEG caps and accessories, ECG and EMG lead wires, tVNS and taVNS devices and ear electrodes, physiotherapy cables, medical connectors, medical docking and charging products, and custom medical cable assemblies.

Heymed Medical provides OEM and ODM support from product design and prototype development to testing and ISO 13485-controlled manufacturing.

References and Further Reading

Comparison of Foam-Based and Spring-Loaded Dry EEG Electrodes with Wet Electrodes:
https://pmc.ncbi.nlm.nih.gov/articles/PMC5978408/

Quantitative Assessment of EEG and EMG Recordings with Wet and Dry Electrodes:
https://pubmed.ncbi.nlm.nih.gov/41415693/