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CAN CSA C22.2 No. 60601-2-26-14 (2018): Safety and Essential Performance Requirements for Electroencephalographs
Canadian Adoption of IEC 60601-2-26 for EEG Medical Electrical Equipment
CAN CSA C22.2 No. 60601-2-26-14 (2018), also referenced as CSA C22.2 No. 60601-2-26-14, is the Canadian national adoption of IEC 60601-2-26:2012, the particular standard for the basic safety and essential performance of electroencephalographs (EEGs). Issued under the Canadian Electrical Code Part 2 framework (C22.2 series), this standard must be applied in conjunction with CAN CSA C22.2 No. 60601-1 (the Canadian adoption of IEC 60601-1) and relevant collateral standards. It establishes mandatory technical requirements for manufacturers intending to sell EEG equipment in Canada.
Scope and Application
CAN CSA C22.2 No. 60601-2-26-14 (2018) applies to medical electrical equipment designed exclusively for recording, analyzing, and monitoring electroencephalographic signals — including devices used in clinical environments, intensive care units, operating rooms, and home healthcare. The standard covers both stationary and portable EEG systems, as well as ambulatory recorders and EEG systems integrated into neurodiagnostic monitoring networks.
Excluded from the scope are equipment used for magnetoencephalography (MEG), functional near-infrared spectroscopy (fNIRS), and other non-electrical neurological assessment modalities. Equipment that combines EEG with evoked potential (EP) or electromyography (EMG) functions must also satisfy the applicable particular standards for those modalities (e.g., CAN CSA C22.2 No. 60601-2-40 for electromyographs). The standard specifically addresses EEG applied parts as Type BF (body floating), although the manufacturer may classify them as Type CF if intended for direct cardiac or cerebral contact.
Tip: When combining EEG with other modalities, always check if the particular standard for each modality is also adopted in the C22.2 series. Overlapping requirements must be reconciled with the general standard CAN CSA C22.2 No. 60601-1.
Key Technical Requirements
The standard is organized around the clauses of IEC 60601-1 with supplementary requirements specific to EEG performance and safety. The most critical technical provisions are summarized below.
Protection Against Electric Shock
EEG electrodes present a low-impedance path to the patient, making leakage current control paramount. The standard enforces the limits of IEC 60601-1 for Type BF applied parts, with particular attention to patient leakage current in normal and single-fault conditions. Additionally, a specialized test simulates the high common-mode voltages that may appear on a patient in an electrically busy hospital environment.
Essential Performance
Essential performance requirements ensure that the device can reliably acquire EEG signals under clinically relevant conditions. These include noise floor, common-mode rejection ratio (CMRR), impedance measurement accuracy, and the ability to detect electrode displacement or disconnection.
Software and Alarms
If the EEG system provides automated detection of epileptiform discharges, burst suppression, or other patterns, the algorithm sensitivity and specificity must be validated. Audible and visual alarms for electrode detachment or signal loss are required, with alarm condition priorities defined per IEC 60601-1-8.
| Parameter | Requirement | Applicable Clause |
|---|---|---|
| Patient leakage current (BF) | ≤ 50 μA under normal conditions; ≤ 100 μA under single-fault | Clause 8.7 (per IEC 60601-1) |
| Dielectric strength (BF applied parts) | 1500 VAC (2121 V peak) for 1 minute | Clause 8.8 (per IEC 60601-1) |
| Common-mode rejection ratio (CMRR) | ≥ 90 dB at 50/60 Hz with balanced source impedance | Clause 201.12.1 |
| Input noise voltage | ≤ 3 μV peak-to-peak (0.5 – 100 Hz bandwidth) | Clause 201.12.1 |
| Electrode impedance measurement | Range 0 – 200 kΩ, accuracy ±10% or ±2 kΩ (whichever greater) | Clause 201.12.4 |
| Alarm for electrode off/net disconnected | Automatic indication within 5 s of disconnection | Clause 201.13 |
Implementation and Design Considerations
Manufacturers integrating CAN CSA C22.2 No. 60601-2-26-14 (2018) into their design process should address several system-level challenges early in development.
Patient Isolation and Input Circuitry
The input stage must provide galvanic isolation between each electrode channel and the mains-powered elements of the device. Isolation amplifiers or digital isolators certified to IEC 60601-1 clearance and creepage distances are recommended. The design should also include low-pass filtering to prevent RF interference from electrosurgical units (ESU) without distorting the EEG bandwidth (typically 0.5 – 100 Hz).
Warning: Inadequate input protection can result in patient leakage currents exceeding the single-fault limit of 100 μA. Particularly during ESU activation, transient currents may saturate the preamplifier and create a compliance risk. Use transient clamping devices rated for medical applications.
Electrode Impedance Monitoring
Continuous impedance measurement via a low-amplitude, high-frequency test signal (e.g., 10 nA at 30 Hz) is a typical implementation. The standard requires that the measurement does not interfere with the clinical EEG recording and that the test signal presents no risk to the patient. The measurement system must be accurate across the full specified impedance range, including for high-impedance scalp electrodes such as subdermal needles.
Essential Performance Validation
Essential performance tests must be repeated with all software versions and hardware configurations that could affect the measurement chain. For example, if the EEG device offers selectable bandwidth filters, the noise and CMRR tests must be performed in the worst-case configuration. The manufacturer’s risk management file (per ISO 14971) must document how essential performance is preserved under credible single-fault conditions, such as a power supply failure or electrode disconnection.
Compliance and Certification
To legally market EEG equipment in Canada, manufacturers must demonstrate compliance with CAN CSA C22.2 No. 60601-2-26-14 (2018) through a conformity assessment process recognized by Health Canada or a Standards Council of Canada (SCC) accredited certification body. The typical pathway involves:
- Testing and Documentation: Full testing of the device by a laboratory accredited to ISO/IEC 17025 for IEC 60601 series standards. Test reports must clearly indicate compliance with the Canadian deviations contained in C22.2 No. 60601-2-26-14.
- Technical File Review: Submission of the manufacturer’s risk management file, essential performance specifications, software validation documentation, and clinical evaluation reports.
- Factory Inspection: Periodic audits of the quality management system (ISO 13485) to verify ongoing conformity of production.
- Certification and Marking: Issuance of a certificate of compliance and authorization to affix the CSA mark, cCSAus mark, or other SCC-recognized certification mark on the device and its packaging.
Compliance Tip: Engage with a CSA-certified testing body early. They can provide guidance on the specific interpretations of IEC 60601-2-26 that are accepted by Canadian regulators, which may differ from European or U.S. (ANSI/AAMI ES 60601) versions.
It is important to note that CAN CSA C22.2 No. 60601-2-26-14 (2018) includes Canadian deviations from IEC 60601-2-26, such as revised tolerances for line voltage fluctuations and ambient temperature ranges more representative of Canadian healthcare environments. These deviations are detailed in the “Canadian Differences” annex of the standard and must be explicitly satisfied.
Common Pitfall: Assuming that certification to IEC 60601-2-26 alone is sufficient for Canada. Canadian deviations regarding leakage current measurement methodology and marking language require specific additional testing and documentation.
Frequently Asked Questions
Q: Is CAN CSA C22.2 No. 60601-2-26-14 (2018) mandatory in Canada?
A: Yes. All medical electrical equipment sold or imported into Canada must comply with the applicable CSA C22.2 series standards. For electroencephalographs, CAN CSA C22.2 No. 60601-2-26-14 is the designated standard and is mandated by provincial electrical safety authorities and referenced in the Canadian Medical Devices Regulations (SOR/98-282).
A: Yes. All medical electrical equipment sold or imported into Canada must comply with the applicable CSA C22.2 series standards. For electroencephalographs, CAN CSA C22.2 No. 60601-2-26-14 is the designated standard and is mandated by provincial electrical safety authorities and referenced in the Canadian Medical Devices Regulations (SOR/98-282).
Q: Does the standard apply to EEG accessories, such as electrode wires and headboxes?
A: Accessories that form part of the patient circuit or that are in direct contact with the patient must be considered under the system evaluation. The standard applies to the complete EEG system (amplifier, processor, display, and interconnecting cables). Stand-alone accessories are evaluated under the general standard and any applicable collateral standards (e.g., IEC 60601-1-2 for EMC).
A: Accessories that form part of the patient circuit or that are in direct contact with the patient must be considered under the system evaluation. The standard applies to the complete EEG system (amplifier, processor, display, and interconnecting cables). Stand-alone accessories are evaluated under the general standard and any applicable collateral standards (e.g., IEC 60601-1-2 for EMC).
Q: How does this standard relate to IEC 60601-2-26:2012?
A: CAN/CSA C22.2 No. 60601-2-26-14 is essentially identical to IEC 60601-2-26:2012, but includes Canadian variations focusing on mains supply tolerances, ambient conditions, and bilingual marking requirements. The technical content for essential performance and safety is unchanged.
A: CAN/CSA C22.2 No. 60601-2-26-14 is essentially identical to IEC 60601-2-26:2012, but includes Canadian variations focusing on mains supply tolerances, ambient conditions, and bilingual marking requirements. The technical content for essential performance and safety is unchanged.
Q: Can an EEG device certified to the European EN 60601-2-26 standard be sold in Canada without additional testing?
A: Not directly. Even though EN 60601-2-26 is harmonized to the same IEC base, Canadian deviations (e.g., in marking, language, and some environmental conditions) require supplementary evaluation. A certification body will typically review the existing test reports and request gap testing to cover the Canadian differences.
A: Not directly. Even though EN 60601-2-26 is harmonized to the same IEC base, Canadian deviations (e.g., in marking, language, and some environmental conditions) require supplementary evaluation. A certification body will typically review the existing test reports and request gap testing to cover the Canadian differences.
Last updated: January 2026. This article is for informational purposes and does not replace the official standard document. Always refer to the latest published edition of CAN CSA C22.2 No. 60601-2-26-14 and consult with a recognized certification body for current compliance requirements.