Whether a medical equipment in the hospital to play its maximum performance, in addition to the technical performance of the machine itself has a direct relationship, but also with the quality of the medical power supply has an extremely important relationship. The quality of medical power supply will directly affect the stability and reliability of the operation of medical equipment, and even lead to major medical equipment accidents and cause huge economic losses.
Due to the power supply needs of different types of medical equipment, the most widely used is the centralized power supply structure. That is, by a centralized power converter to generate the required output voltage of various voltage levels. Due to its low cost, high efficiency, adjustable output voltage, low output noise, fast dynamic response, etc. is very suitable for medical equipment, medical equipment is currently the most used a power supply.
Medical equipment power supply program to determine the need to consider the following issues:
Safety and isolation of medical power supply
Safety and isolation is a major difference between ordinary commercial power supplies and medical power supplies. Usually, except for some experimental analysis instruments, most of the medical equipment is installed near the hospital bed or operating table, which is relatively close to people and operators, and the shell is often touched. Medical equipment has a variety of internal strong and weak components, if the isolation between strong and weak power or insulation problems with the shell material, it will be very dangerous. Safety testing in general medical equipment power supply must be UL60601-1, C-UL, EN60601-1 and other safety certification. Input and output must be more than 4000V isolation voltage, and the requirements of the ground leakage current is low, in line with the safety regulations creepage distance requirements. For the strong part of the need to use double insulation, especially with the possibility of contact with the equipment shell part of the insulation design should be strengthened.
Medical power supply electromagnetic compatibility and resistance to electromagnetic interference ability
To choose or build a good power supply system for medical equipment, we must pay attention to improve the electromagnetic compatibility of the power supply and the ability to resist electromagnetic interference. The main aspects to be considered are as follows:
Medical power supply design
PCB board design and layout, the general power supply will contain some high-frequency signals, any printed line on the PCB board can play the role of the antenna, the length and width of the printed line will affect its impedance and inductive impedance, thus affecting the frequency response, in time to pass the DC signals through the printed line will also be coupled from the neighboring printed line to the RF signals and cause problems in the circuit. Therefore, medical power supply must choose a big brand, with strong R & D strength of the company's products, these products in the design and production process can ensure good quality.
Medical power supply shielding
In order to suppress the radiation generated by the switching power supply and eliminate the impact of electromagnetic interference on other electronic equipment within the medical equipment, the best way is to shield the magnetic field of the power supply, and then the entire shielding cover with the medical equipment chassis or ground as a single unit, which is a half-measure approach.
Medical power supply certification
At this stage, the general medical equipment class power supply needs to be tested for electromagnetic compatibility and anti-electromagnetic interference capability. Choosing a product that has completed these tests not only ensures that it does not affect other electronic components in the device, but also reduces the development cycle of the medical device and the time it takes for the device to be tested before it is introduced to the market. quankang offers a diverse line of medical power supplies (wall-plugged, desktop, and open power supplies), and all of its medical products comply with the requirements of the 2MOPP, ANSI/AAMI ES60601-1/EN60601-1 Ed. 1/EN60601-1 Ed 3.1 and EN60601-1-2 Ed4.0 Level B. All medical products meet the highest industry requirements. In addition, all products are CEC and ErP Class VI compliant.
Medical Power Supply Size and High Power Density
In addition to the development of multifunctionality, high detection and adjustment accuracy, the development of smaller size and portability is also a direction of development for medical equipment. This requires medical device power supplies to have higher power output in a smaller board area.
Medical power supply special applications
Most of the centralized power supply products on the market are standard outputs, even if some power products can be adjusted by means of external circuits, the adjustment range is not large, and there are problems with stability. If you encounter a low voltage, high current or very high DC voltage situation how to deal with, of course, can be customized.
Medical Power Supply Prices
Nowadays, the price of medical equipment has been gradually transparent due to the fierce competition, especially some small medical equipment for home use, the price has been very civilian and popularized. So it requires the power supply, an important part of medical equipment, to be competitively priced.
Quankang, as a power supply supplier in China with 30 years of experience, is able to provide competitive technical solutions to ensure that customers get high quality medical power supply products at very competitive prices.
