ISO 22466:2021

Overview

ISO 22466:2021 - "Traditional Chinese medicine - Laser acupoint devices" specifies requirements and test methods for laser acupoint (laser acupuncture) devices. The standard covers device configuration and classification, key optical and electrical performance limits, safety and biological evaluation, electromagnetic compatibility, and required instructions for use. It is not applicable to carbon‑dioxide (CO2) lasers, and for combined devices it applies only to the laser features.

Key topics and technical requirements

• Configuration & classification
  • Describes single‑probe vs multi‑probe devices and single‑beam vs cluster‑beam probes.
• Optical parameters
  • Wavelength: peak wavelength required in the range 400–1 400 nm.
  • Spot size: manufacturer‑specified maximum; tolerance ±10% (per ISO 11146‑1).
  • Pulse repetition rate: pulsed lasers must meet manufacturer specification within ±10%.
  • Output power: single‑beam maximum accumulated output power ≤ 200 mW (per ISO 11554).
  • Energy density: cumulative maximum energy density during treatment ≤ 10 J/cm² for each beam (measurement per ISO 11554).
  • Output independency: in multi‑probe devices each probe’s output energy density must be independent.
• Stability & indicators
  • Power stability (CW) and energy stability (pulsed) tolerances ≤ 10%.
  • Devices must provide visible or audible emission indicators (individual indicators for multi‑probe units).
• Target/aiming function
  • For invisible infrared beams or non‑contact probes, an aiming/target‑indicating function is required with concentricity and diameter limits; the aiming light AEL must be < 5 mW.
• Safety & usability
  • Eye protection (shields or eyewear) required; hazards must be described in the IFU.
  • Probe fixing unit required if continuous application exceeds 2 minutes.
  • IFU must include warnings (eye irradiation, ulceration treatment, eyewear recommendations), fixation instructions, and technical specifications.
• Biological & electrical compliance
  • Biocompatibility of skin‑contact parts per ISO 10993‑1.
  • Electrical safety per IEC 60601‑1 and electromagnetic compatibility per IEC 60601‑1‑2.

Applications and users

ISO 22466 is valuable for:

• Manufacturers designing and certifying laser acupuncture devices.
• Test laboratories performing conformity testing (optical, electrical, EMC, biocompatibility).
• Regulatory bodies and conformity assessors evaluating medical device safety and labeling.
• Clinicians and TCM practitioners seeking devices that meet recognized safety and performance criteria.
• Procurement and compliance officers specifying safe laser acupoint equipment.

Related standards

• ISO 10993‑1 (biological evaluation)
• ISO 11145 / ISO 11146‑1 / ISO 11554 (laser optics and test methods)
• IEC 60601‑1 and IEC 60601‑1‑2 (medical electrical safety and EMC)
• IEC 60825‑1 (laser product classification)

Keywords: ISO 22466, laser acupoint devices, laser acupuncture, traditional Chinese medicine, safety requirements, test methods, wavelength, energy density, IEC 60601, ISO 10993.