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    Shanghai Shiyin endoscope
  • 30 days for return/exchange without reason


  • Two years replacement, five years warranty


  • At least 2 times a year active after-sale return visit service


  • Q1: Common problems of medical safety and electromagnetic compatibility of medical devices

    1. The display has a poor anti-interference ability to the power frequency magnetic field. If the screen of the display is made of aluminum, the anti-interference ability of the display is poor because of the low magnetic permeability of aluminum and the poor magnetic shielding efficiency.If the use of iron or stainless steel materials, magnetic shielding efficiency will improve a lot, so as to solve the display of the anti-interference ability of the power frequency magnetic field.

    2. Image interference was found on the monitor during the debugging of the electronic endoscope. One possibility is that the cable that transmits video signals from the machine to the image card interferes with the cable from the image card to the monitor in a capacitive coupling way, leading to the decline of image quality.One possible solution is to strengthen the shield of that cable.

    3. The large low-frequency radiation interference of the X-ray machine is mainly caused by the common-mode interference current caused by the inverter power supply. The shielding range of the general standard is about tens of MHz, and the common-mode choke can be added to the inverter power supply to reduce the interference.If there is excessive radiation interference in the high frequency band (generally in the range of 200MHz ~ 300MHz to 1000MHz), it may be caused by the host computer. The shielding efficiency can be improved by improving the electrical connection of each part of the host chassis.Another reason may be that the internal interconnect cable of the product, due to the larger common mode current, the radiation emission of the product exceeds the standard, generally in the range of tens of MHz to 200MHz ~ 300MHz, can be solved by improving the cable shielding or adding ferrite magnetic ring on the cable.


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