Observations on the daily use of ultrasound from maintenance experience

Ultrasound imaging technology holds a very important position in hospitals. B-ultrasound systems (black and white ultrasound) have become a commonly used medical examination method in hospitals, while ultrasound Doppler systems (color ultrasound) provide a powerful means for diagnosing cardiovascular diseases. To ensure the long-term and efficient operation of ultrasound systems, reasonable maintenance and repair are of great significance.

To ensure the safe and stable operation of the ultrasound system, a good environment must first be created for it.Ultrasound systems are precision electronic instruments with strict requirements for temperature, humidity, and air. Installing air conditioners, dehumidifiers, and air purifiers in the machine room is necessary.

Ultrasound systems also have high requirements for the stability of power voltage and frequency.The mains power must be connected to the machine through a voltage regulator. The maximum power of the voltage regulator must be 1.5 times or more than the maximum power of the machine. The power line layout must comply with the specifications, and the ground wire of the ultrasound system must be separately buried. The use of mobile phones should be strictly prohibited in the machine room, and the machine room should be kept away from strong radiation sources (such as wireless communication base stations, etc.), otherwise shielding should be considered.

During use, avoid prolonged use at maximum output power as much as possible.Between B-ultrasound examinations, the machine can be kept in image freeze mode. Before turning off the machine, the gain and TGC should be adjusted to the minimum. Ultrasound probes are fragile and should be avoided from being dropped or subjected to strong force during use. The probe connection should be avoided from being pulled or excessively bent to prevent internal disconnection.

Currently, manufacturers generally do not provide users with repair manuals. If provided, they are only structural diagrams and flow charts, without specific circuit diagrams, which has caused great difficulties for hospital maintenance. Generally, higher-end machines haveSelf-test proceduresWhich can indicate the location of the fault. By scientifically using these prompts, it is possible toGreatly shorten the repair time.。

Overall,Faults in the control and imaging circuits are relatively rarewhile a large number of failures occur in the power supply and frequently used external devices.Due to the large power dissipation of the power supply, if the environment is poorly ventilated, it is easy to cause faults. Among external devices, mechanical parts, such as: buttons and trackballs on the control panel, are most prone to problems due to frequent use. Buttons usually get stuck or worn out, while trackballs are contaminated by dust and coupling agents, causing internal mechanical parts to malfunction or light path blockage.

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