Medical Board

Product Parameters

Medical Board
Base Material:	FR-4
Certification:	RoHS, ISO
Layers:	Multilayer
Layer:	1-48 Layers
PCBA QC:	X-ray, Aoi Test, Function Test(100% Test)
Solder Mask Color:	Green/Black/Red/Blue/Yellow/White/
Specification:	500mm X 400mm
Name:	Medical Board PCBA

Product Display

I. Description of Medical Boards

• Definition: Medical boards are printed circuit boards (PCBs) customized specifically for medical devices and are the core components of medical electronic equipment. They integrate various electronic components, including chips, sensor interfaces, signal processors, etc., and can effectively process and transmit medical - related electrical signals.
• Functional Characteristics: The functions of medical boards are highly diverse, depending on the specific applications of medical devices. They can amplify, filter, and digitize weak bio - electrical signals (such as electrocardiogram, electromyogram, and electroencephalogram signals), and also control various actuator components of medical devices, such as motors, valves, and laser emitters. At the same time, medical boards are responsible for establishing reliable communication links between different components of medical devices to ensure accurate data transmission and coordinated operation of the devices.

II. Application Scenarios

1. Clinical Diagnostic Equipment
   • Electrocardiograph (ECG): The medical board is used to receive and amplify the electrocardiogram signals collected from the surface electrodes of the human body. These signals are usually very weak (in the millivolt range). The medical board amplifies them, filters out interference signals, and then converts them into digital signals. Finally, the electrocardiogram waveform is displayed on the screen, helping doctors diagnose heart diseases, such as arrhythmias and myocardial infarctions.
   • Electroencephalograph (EEG): In an electroencephalograph, the task of the medical board is to collect the electroencephalogram signals generated by the activities of brain neurons. Since electroencephalogram signals are even weaker (in the microvolt range) and vulnerable to interference, the medical board needs to have high sensitivity and strong anti - interference capabilities. After processing, the electroencephalogram can be displayed on the screen for detecting brain diseases such as epilepsy, brain tumors, and brain injuries.
   • Ultrasonic Diagnostic Equipment: In ultrasonic diagnostic equipment, the medical board mainly controls the ultrasonic emission and reception of the ultrasonic probe. During emission, it drives the probe to emit high - frequency ultrasonic waves. These ultrasonic waves propagate in human tissues and generate reflected waves. After receiving the reflected waves, the medical board converts them into electrical signals and processes them. Finally, an ultrasonic image is formed, which is used to observe the structure and pathological conditions of internal organs of the human body, such as the liver, gallbladder, and uterus.
2. Therapeutic Equipment
   • Cardiac Pacemaker: The medical board is a crucial part of the cardiac pacemaker. It generates and controls electrical pulse signals. According to the patient's heart rhythm and preset parameters, the medical board accurately emits electrical pulses to stimulate the myocardial cells of the heart, making the heart beat in a normal rhythm. It plays a vital role in maintaining the life of patients with severe arrhythmias (such as sino - atrial node dysfunction and atrioventricular block).
   • Medical Laser Therapy Device: In this type of device, the medical board adjusts the output parameters of the laser, such as power, wavelength, pulse frequency, and duration. By precisely controlling the laser output, it can be used for various treatments, such as treating acne and skin spots in dermatology, and treating retinal diseases and glaucoma in ophthalmology.
   • Extracorporeal Shock Wave Lithotripter: The medical board controls the generation and emission frequency of shock waves. Based on parameters such as the location and size of the stone, it accurately guides the shock waves to focus on the stone, breaking the stone into fragments. Patients can then excrete the stone fragments through natural urination, which is used to treat urinary system stones.
3. Vital Sign Monitoring Equipment
   • Multi - parameter Monitor: It is widely used in hospital wards (including intensive care units - ICUs and general wards). The medical board can simultaneously connect multiple sensors, such as electrocardiogram electrodes, blood pressure cuff sensors, blood oxygen saturation probes, and respiratory sensors. It continuously collects patients' vital sign data, such as heart rate, blood pressure, blood oxygen saturation, and respiratory rate. After processing, the data is displayed in real - time on the monitor screen and can be transmitted to the hospital's central monitoring system through the network, facilitating medical staff to observe patients' condition changes at any time.
   • Wearable Health Monitoring Devices: Such as smart bracelets, smart watches, and smart chest straps. The medical board is integrated into these devices to collect and process basic vital sign data of the human body, such as heart rate, number of steps, and sleep quality. This data can be transmitted to the user's mobile phone or cloud server via Bluetooth or other wireless communication methods. Users can view their health data through corresponding applications, which also helps doctors with remote health management.

III. Hardware Characteristics

1. High - Precision Analog Circuits
   • Signal Acquisition and Amplification: Medical boards are equipped with high - gain, low - noise amplifiers for collecting weak bio - electrical signals. For example, for electrocardiogram signals, the amplifier gain is usually in the range of 1000 - 10000 times, which can amplify millivolt - level signals to a range that can be effectively processed by subsequent circuits. At the same time, the input noise of the amplifier is very low to ensure the quality of the collected signals.
   • Filter Circuits: In order to remove interference components in the signals (such as power - frequency interference and electromyogram interference), medical boards are equipped with various filter circuits. Common ones are band - pass filters, which are used to selectively pass signals within a specific frequency range. Taking electrocardiogram signals as an example, a band - pass filter with a frequency range of 0.05 - 100Hz is usually set to only allow electrocardiogram signals within this frequency range to pass, effectively filtering out other interference signals.
2. High - Performance Digital Circuits
   • Microprocessors and Microcontrollers: Medical boards usually integrate high - performance microprocessors (MPUs) or microcontrollers (MCUs). These chips are responsible for executing complex signal processing algorithms, controlling the operation process of the device, and managing data communication. For example, in a multi - parameter monitor, the microprocessor analyzes the collected vital sign data according to pre - programmed algorithms, judges whether the data is within the normal range, and triggers the alarm mechanism in case of abnormalities.
   • Data Storage and Communication Interfaces: They have sufficient memory for storing configuration parameters, calibration data, and patient data during the operation of the device. At the same time, they are equipped with a variety of communication interfaces, such as USB, Ethernet, SPI (Serial Peripheral Interface), I2C (Inter - Integrated Circuit), and Bluetooth. These interfaces are used for data transmission with external devices (such as computers, servers, and smartphones), enabling functions such as remote control of the device, data backup, and software updates.
3. High - Reliability and Safety Design
   • Component Quality and Selection: Medical boards use electronic components that meet medical - grade or industrial - grade standards. These components have undergone strict quality inspections to ensure high reliability and long service life. For example, for key chips and sensors, the failure rate is usually required to be at an extremely low level to reduce the risk of device failure.
   • Electromagnetic Compatibility (EMC): The environment where medical devices are located has a large number of electromagnetic interference sources. Medical boards must have good electromagnetic compatibility. During the design and manufacturing process, through reasonable wiring, shielding measures, and component layout, it is ensured that the medical board can still work normally when affected by external electromagnetic interference, and the electromagnetic radiation generated by itself also complies with relevant standards and will not interfere with other medical devices and patients.
   • Electrical Safety Design: To prevent patients and medical staff from being injured by electric shock, the medical board takes a variety of electrical safety measures in the circuit design. For example, isolation circuits are set up to isolate the parts in contact with patients from the power supply and other high - voltage parts. At the same time, there is a leakage protection mechanism that can quickly cut off the power supply when the detected leakage current exceeds the safety threshold.
4. Miniaturization and Portability Design (Applicable to Some Devices)
   • Multi - layer Circuit Board Structure: For some small - sized medical devices (such as wearable devices and portable diagnostic devices), the medical board adopts a multi - layer circuit board structure. By making rational use of space, complex circuit functions can be realized within a limited area. The multi - layer board can reduce the wiring length, reduce signal interference, and improve the integration of the circuit board.
   • Low - Power Design: To meet the long - term operation requirements of portable devices, the medical board adopts a low - power design. By optimizing the circuit structure, selecting low - power components, and adopting intelligent power management strategies, the device can maintain a long working time when powered by a battery. For example, some medical boards of wearable health monitoring devices, by using low - power microcontrollers and sensors, combined with sleep modes and wake - up mechanisms, can enable the device to work continuously for several days or even weeks with a small - sized battery.