1. Professional Cleaning and Disinfection
1. Stethoscope Head Treatment
Wipe the stethoscope head with 75% ethanol or a chlorine-containing disinfectant (500mg/L). Disinfect it each time it is shared by multiple people.
2. Microphone and Sound Port Cleaning
Clean the microphone and sound port weekly with a small brush to prevent dirt from clogging and affecting sound quality.
2. Performance Testing and Calibration
1. Electroacoustic Characteristics Test
Check whether parameters such as amplification and distortion meet the requirements of the YY/T 1035-2021 standard.
2. Electrical Safety Test
Test insulation resistance, leakage current, and other parameters to ensure compliance with the GB 9706.1 medical electrical safety standard.
3. Environmental Adaptability Maintenance
1. Moisture-Proofing
For long-term storage, place the device in a desiccating box to prevent moisture from entering the internal circuitry. 2. Extreme Environment Testing
Verify the device's stability under temperature (-20°C to 55°C) and humidity (≤95%) conditions.
4. Biocompatibility Testing
Components that come into contact with the human body must pass ISO 10993 biocompatibility testing (e.g., skin irritation).
5. Software and Data Maintenance
1. Firmware Upgrades
Regularly update system software to fix potential vulnerabilities.
2. Recording File Management
Clean up storage space to ensure proper recording functionality.
Notes
In-depth maintenance must be performed by qualified personnel to avoid damage caused by disassembly.
After maintenance, test results must be recorded and archived for future reference.
