Ultrasound usage precautions and simple troubleshooting ideas

Ultrasound imaging technology plays a very important role in hospitals. B-ultrasound systems (black and white ultrasound) have become a common medical examination method used in hospitals, while ultrasound Doppler systems (color ultrasound) provide a powerful tool for diagnosing cardiovascular diseases. To ensure the long-term and efficient operation of the ultrasound system,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. The ultrasound system is a precision electronic instrument, and it has strict requirements for temperature, humidity, and air. Installing air conditioning, dehumidifiers, and air purifiers in the machine room is necessary.

The ultrasound system also has high requirements for the stability of the 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 of 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 buried separately. Mobile phones should be strictly prohibited in the machine room,the machine room should be away from strong radiation sources (such as wireless communication base stations, etc.), otherwise shielding should be considered.。

During use, try to avoid using it at the maximum output power for a long time.In the interval of doing B-ultrasound, the machine can keep the image frozen.。Before turning off the power, the gain and TGC should be adjusted to the lowest. Ultrasound probes are relatively fragile. When using them, avoid dropping or using force. The probe connection should be avoided from pulling or excessive bending to prevent internal disconnection.。

Due to the frequent use of the ultrasound system, its failure rate is relatively high. Maintenance should change from passive to active. If conditions permit,regular maintenance and inspectionshould be carried out to deal with faults in their infancy. Faults during the warranty period should be directly contacted with the manufacturer for solution. Faults outside the warranty period that cannot be solved by yourself should be contacted as soon as possiblemanufacturer or third-party maintenanceto ensure that the equipment can operate normally.

Now manufacturers generally do not provide users with maintenance manuals. If provided, they are only structural diagrams and flowcharts, not specific circuit diagrams, which has brought great difficulties to hospital maintenance.Generally, higher-end machines have self-test procedures that can indicate the location of the fault. Scientifically using these prompts can greatly shorten the repair time.

Ultrasound systems can be roughly divided into structurescontrol and imaging circuits, power supply, and external devices (monitor, control panel, probe, camera, printer, etc.)。The control and imaging circuit boards have a compact structure, mostly use very large-scale integrated circuits, and generally use surface mount technology. The circuit boards are multi-layered, making them difficult to find and repair.For hospitals, in most cases, only board-level maintenance can be performed, and the manufacturer is contacted for replacement.Most power supplies and external devices use more discrete components, have relatively low integration, and are relatively independent, making them suitable for independent maintenance.

According to the fault phenomenon, carefully analyze, carefully check for obvious traces, and eliminate them step by step from easy to difficult.

Overall, the control and imaging circuits are less likely to fail, while a large number of failures occur in the power supply and frequently used external devices.Power supplyDue to the large power dissipation, if the environment is poorly dissipated, it is easy to cause faults. In external devices, mechanical parts, such as:buttons and trackballsdue to frequent use, are the most prone to problems. Buttons usually get stuck or worn, while trackballs are contaminated by dust and coupling agents, causing the internal mechanical parts to fail or the optical path to be blocked. For example, in one LOGIQ V2 color ultrasound machine, due to frequent plugging and unplugging of the probe, the probe identification micro-switch was worn, causing the machine to think that there was no probe inserted. This fault is because the external devices are relatively independent, making it easier to find the problem.

This information comes from the Internet. Please contact us to delete it if there is any infringement.