| ECG or EKG patches | Single-site or connected electrodes, snap or tail interface, backing, adhesive or hydrogel zones, liner, and package | Contact geometry, interface, material stack, electrical limits, placement and acquisition validation |
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| EEG arrays | Multi-site position, channel routing, reference sites, flexible carrier, tail, connector, and registration | Site map, channel identity, placement fixture, signal chain, cable interface, and array acceptance |
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| EMG electrodes | Differential spacing, paired or multi-site geometry, reference position, routing, connector, and converted stack | Spacing datum, acquisition interface, motion conditions, electrical limits, and use validation |
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| TENS, EMS, or NMES pads | Conductive area, lead interface, edge geometry, backing, adhesive or hydrogel conversion, liner, and package | Waveform, current and thermal limits, placement, treatment logic, reuse policy, and finished-device validation |
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| Grounding-pad patterns | OEM-defined printed return pattern, split geometry, lead or connector interface, converted layers, and inspection | Safety architecture, monitoring compatibility, power and thermal limits, contact assessment, and regulatory validation |
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| Wearable patches | Sensing sites, flexible circuit, component lands, tail, strain management, backing, adhesive zones, liner, and package | Electronics, firmware, algorithms, wear study, environmental conditions, biocompatibility, and device validation |
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| Custom printed arrays | Application-specific electrode map, traces, dielectric, substrate, tail, connector, lamination, and die cut | Electrical test method, mating interface, installation, functional acceptance, and complete product validation |