ExG monitoring applications

Precision diagnostic monitoring, real-time and in real life

Advances at the medical frontier demand more capable electronics. Better bio‑electrical insight means earlier clinical decisions, safer care and stronger evidence.

Our medical skin patches provide reliable interfaces for ExG diagnostic monitoring, including ECG, EEG, EMG, EOG and GSR applications. Electrode layouts and placement are tuned to each application; adhesives and carriers match wear time and body zone; and packaging is validated to preserve performance throughout shelf life.

Monitoring applications

Monitoring applications place different demands on electrode design, materials and skin interaction. Signal amplitude, impedance stability, motion sensitivity and wear time vary significantly between cardiac, neurological and muscle monitoring use cases.

Quad designs and manufactures adhesive electrode patches tailored to each signal type — aligning electrode chemistry, geometry, adhesives and interconnects with your device architecture and intended use.

While ECG, EEG and EMG are the most common applications, the same technology platform supports a broader range of ExG measurements, including EOG (electrooculography), EDA/GSR (electrodermal activity) and other bio-potential sensing modalities.

Most common monitoring applications

ECG monitoring

ECG monitoring places high demands on electrode stability, motion robustness and long-term skin compatibility. In ambulatory and remote cardiac monitoring, electrodes must deliver low and stable impedance while remaining comfortable during daily activity.

Quad designs and manufactures ECG electrode patches optimised for chest and thorax placement, combining Ag/AgCl electrode systems with medical-grade adhesives and flexible carriers. Electrode layouts range from simple two-electrode configurations to high-density arrays with 120+ electrodes, with geometry and spacing tuned to ensure reliable signal capture throughout the intended wear period.

ECG electrode performance is evaluated following ANSI/AAMI EC12 guidelines, including impedance stability and signal behaviour under defined test conditions. Where required by the application, defibrillation withstand considerations are addressed as part of the electrode, interconnect and patch architecture design, ensuring compatibility with clinical ECG environments.

EEG monitoring

EEG monitoring places very high demands on electrode–skin impedance, signal stability and wearer comfort. Brain signals are low in amplitude and highly sensitive to motion, skin condition and electrode placement.

Quad designs and manufactures EEG electrode patches optimised for scalp and facial placement, combining skin-compatible electrode systems with soft carriers and low-irritation adhesives.

Electrode geometry, surface area and spacing are tuned to achieve stable impedance while maintaining comfort on sensitive skin zones.

For ambulatory, home-use and sleep-monitoring applications, patch constructions are engineered to remain conformal over extended wear periods, minimising motion artefacts and maintaining reliable signal capture throughout recording.

EMG monitoring

EMG monitoring requires electrodes that can reliably capture muscle activity under dynamic conditions. Signal amplitudes are higher than EEG, but measurements are highly sensitive to motion, muscle contraction, sweat and skin deformation.

Quad designs and manufactures EMG electrode patches optimised for placement on active muscle groups, combining robust electrode systems with flexible carriers and medical-grade adhesives.

Electrode size, geometry and spacing are tailored to the target muscle and application, balancing signal selectivity with stable skin contact during movement.

For applications involving rehabilitation, sports or neuromuscular assessment, patch constructions are engineered to tolerate repeated muscle activation and mechanical strain while maintaining consistent signal quality throughout the intended wear period.

What we build

For monitoring applications, patch architecture is driven by signal type, body zone and intended wear time. Quad’s ExG platform supports multiple electrode configurations and system architectures, allowing wearable patches to be tailored to the specific requirements of ExG monitoring systems, including ECG, EEG, EMG, EOG and GSR.

  • Carrier and adhesive selection
    Medical non-woven or polymer films on TPU or PET, combined with skin-friendly adhesive systems selected for body zone, motion and session duration.

  • Printed electrode layouts
    Silver and carbon electrodes are commonly used for stimulation applications, with geometry and placement tuned for current distribution, comfort and session duration.

  • Interconnect strategy
    Connector concepts matched to the electronics module and mechanical constraints, including snap (stud), FPC/flex tail, pogo-pin or crimp interfaces.

  • Handling and identification
    Patch layout, orientation marks and lot codes designed to support repeatable placement, efficient setup and full traceability across use cases.

Why Quad Industries?

Prototype to volume

To get started, just share a sketch, a proposed stack, or your recorder specs. Together we select materials, design the printed electrodes, agree the connectivity strategy, and validate packaging and shelf life.

Designs are scaled to production with consistent quality and reliable lead times, supported by automated manufacturing and validated process control.

Skin lab and packaging

We evaluate material stacks on real skin, assess reliability and use accelerated ageing to align device performance with packaging and logistics requirements. Adhesive performance and removal comfort are validated under realistic use conditions.

Validated barrier pouches protect hydrogel performance during storage and handling.

Standards & Quality

Quality and regulatory compliance are embedded at every stage of Quad’s operations — from early material validation to automated high-volume production.

Quad operates under a certified ISO 13485 quality management system, ensuring full alignment with medical device regulatory requirements throughout development and manufacturing.

Our manufacturing facilities are FDA registered for medical device production. Processes, documentation and traceability are structured to support OEM partners supplying regulated markets in the US and globally.

Why OEMs choose Quad Industries

  • proven track record as a trusted manufacturing partner for medical device OEMs

  • co-development from early concept to validated production

  • agile and robust processes designed for predictable scale-up

  • support with documentation and quality requirements for regulated markets

  • alignment with sustainability objectives and corporate governance standards

Are you ready to move forward together?

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Co-creation & advice

Co-creation is how we work. We challenge assumptions, ask the right questions and share insights gained from previous projects to help customers avoid pitfalls.

R&D

R&D at Quad is about exploring what’s possible before committing to what’s buildable. Through applied research, material testing and participation in innovation programs, we deepen our understanding of new technologies and emerging applications.

This knowledge feeds future projects and helps customers make informed choices early on.

Engineering

Engineering is where ideas are translated into concrete designs. Our engineers define architectures, layouts and technical details that balance functionality, performance and feasibility.

Every decision is made with downstream production and real-world use in mind.

Prototyping

Prototyping is about learning fast. We create functional samples and proof-of-concepts to test assumptions, compare options and validate critical parameters.

This hands-on phase reduces uncertainty before committing to final designs or production.

Manufacturing

Manufacturing is where reliability is proven. In our European production facilities, we produce both low-volume and series runs with full control over critical processes such as printing, assembly and precision cutting.

This allows us to deliver consistent quality while managing cost, yield and lead times.

Quad Academy

The Quad Academy brings together cases, trends and insights from within Quad Industries. It’s a place to explore how technology, materials and production thinking come together in real projects.

Advancing muscle activity monitoring with textile HD-EMG grids

Innovative developments for stick-to-skin wearables

  • ISO-certified

Synergistically repurpose functional ROI after B2C strategic theme areas. Dynamically formulate performance based functionalities for real-time ROI. Credibly communicate.

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