Whether a medical device can exert its maximum performance in a hospital has a direct relationship with the technical performance of the machine itself, and has an extremely important relationship with the quality of the power supply. Power quality is good or bad, it will directly affect the stability and reliability of medical devices, medical equipment and even lead to a major accident and causing huge economic losses. To this end, Shenzhen Zhongdian Huaxing Electronic Technology Co., Ltd. conducts long-term research on the power supply of the equipment for the current status of the medical equipment market, providing the lowest price and efficient power solution for your products. Here, we will discuss some aspects of the selection and products of medical equipment power supplies.
At present, most domestic medical equipment is powered by 220 V mains . Due to the power requirements of various types of medical devices, the most widely used one is the centralized power supply structure. That is, a concentrated power converter produces an output voltage of various voltage levels required. Because of its low cost, high efficiency, adjustable output voltage, low output noise, fast dynamic response, etc., it is very suitable for medical equipment. It is the most widely used power supply method for medical equipment. The medical device power solution needs to consider the following issues.
Safety and isolation
Safety and isolation are a major difference between ordinary commercial power supplies and medical power supplies. Usually, except for some experimental analytical instruments, medical equipment is mostly installed near a hospital bed or operating table, and the distance between the person and the operator is relatively close, and the outer casing is often touched. There are a variety of strong and weak components inside medical equipment. If there is a problem between the isolation of strong and weak electricity or the insulation of the outer casing material, it will be very dangerous. In terms of safety testing, general medical equipment power supplies must be certified to UL60601-1, C-UL, and EN60601-1. The input and output terminals must have an isolation voltage of more than 4000V, and the ground leakage current is required to be low, which meets the requirements of safety creepage distance. For the strong electric part, double insulation is required, and in particular, it is possible to strengthen the insulation design with the part that is in contact with the equipment casing.
Electromagnetic compatibility and immunity to electromagnetic interference
To select or build a good power supply system for medical equipment, care must be taken to improve the electromagnetic compatibility and electromagnetic interference resistance of the power supply. Mainly from the following aspects:
design. PCB design and layout, the general power supply will contain some high-frequency signals, any printed circuit on the PCB can play the role of the antenna, the length and width of the printed circuit will affect its impedance and inductance, thus Influencing the frequency response, the printed line that passes the DC signal in time is also coupled to the RF signal from adjacent printed lines and causes circuit problems. Therefore, medical power supplies must choose large brands, products with strong research and development capabilities, these products can guarantee good quality in design and production process.
shield. In order to suppress the radiation generated by the switching power supply and eliminate the influence of electromagnetic interference on other electronic devices in the medical device, the best way is to shield the magnetic field of the power supply and then connect the entire shield to the casing or ground of the medical device. This is a way of doing more with less.
Certification. At this stage, general medical equipment power supplies need to pass the FCC-B, CISPR22-B, EN55011\55022\61204\61000 and other electromagnetic compatibility and anti-electromagnetic interference capability test. Products that choose to complete these tests not only ensure that they do not have an electromagnetic effect on other electronic components within the device, but also reduce the time required for medical device development cycles and pre-marketing.
Size and high power density. In addition to the development of multi-function, high detection and adjustment accuracy, medical equipment is also a development direction with smaller size and portability. This requires medical equipment power supplies to have higher power output with a smaller onboard area. Excelsys currently has a power density of up to 17W/ in3 per unit area and is very small. It has been successfully used in a variety of portable medical devices and in-vehicle medical devices. For more module power information, please contact the CLP Huaxing Technology R&D team.
Special application. At present, most of the centralized power supply products on the market are standard outputs. Even if some power products can be output regulated by means of external circuits, the adjustment range is not large, and stability is also problematic. If you encounter low voltage, high current or very high DC voltage, you can use custom method, but the price is quite high, and the customer can accept it. In this case, consider excelsys , she can meet your requirements at very low prices.
price. Nowadays, the price of medical equipment has gradually become transparent due to fierce competition. Especially for some small medical equipment for household use, the price has become very popular and popular. So this requires an important part of medical equipment - the power supply, must have a competitive price. In this regard, Shenzhen Zhongdian Huaxing Electronic Technology Co., Ltd., as the largest power module agent in China, can provide competitive technical solutions and rely on the support of suppliers to ensure customers are highly competitive. Get the high quality power module products under the price advantage.
With so many medical equipment power selection problems, how to choose, if I tell you that there is a power supply that can determine the power selection in just 5 minutes, do you believe it? She is the Excelsys in Ireland.
Excelsys is the world's leading provider of configuration power supply design and manufacturing. Headquartered in Ireland, Excelsys is mainly used in medical, lighting, military and other fields, especially in medical equipment. Currently, there are four series of configuration-type power products for medical devices, covering 200 W-1450W power range and low noise.
The company's configuration-type power products consist of two parts.
One is the chassis ( powerPacs ). The function is to rectify the mains input and rectify the PFC power factor , and output 360V DC voltage. At present, there are two major types of products in the chassis, which are available in a 4-slot package and a 6-slot package. The 4-slot output power range is 200W-750W, and the 6-slot output power range is 400W-1340W, 9 series cover different applications such as general application, low noise, high temperature, medical certification, vibration, remote control.
The second is the module (powerMods) . Standard mountings can be mounted directly on the chassis, with a choice of single or dual DC inputs <
The Medical Bed Head Unit is made of aluminum alloy sections, of which the surface is treated with acrylic painting or electrostatic spray. It is equipped with the dismountable panel, three built-in cabling channels for gas, strong electricity and weak electricity, and external leakage protectors, bedside lamps, large toggle switches, five-hole multi-function socket, gas terminal and Medical wards calling system. The hospital can choose the appropriate color in line with the environmental requirements.
Bed Head Unit For Ward
Bed Head Unit For Ward ,Bed Head Panel ,Hospital Bed Head Panel,Mural Bed Head Unit
Hunan Eter Medical Co., Ltd. , https://www.eter-tech.com