Among medical devices, syringe pumps are precise and critical devices that place extremely high demands on the performance and design of electronic components, especially in terms of stability and safety. To ensure accurate drug delivery and avoid interference with other equipment, choosing the right electronic connection solution is critical. Flex PCB has gradually become one of the important electronic components in medical injection pumps due to its excellent flexibility and reliability. This article will take a deep look at a Flex PCB designed for a medical syringe pump. Its unique structure not only improves the overall performance of the device, but also provides significant advantages in terms of electromagnetic compatibility (EMI).
Flex PCB stacking structure: a combination of efficiency and precision
This Flex PCB for medical injection pumps adopts a unique laminated structure design. Its functions and design principles are to ensure the stable operation of electronic components and effectively reduce electromagnetic interference. Specifically, this flex PCB includes multiple layers, and each layer is designed to have its own unique role.
Top and bottom layers: Coverlay layer
In the design of this Flex PCB, the top and bottom layers are Coverlay layers. The coverlay layer is a thin film material that covers the copper foil layer of the PCB and plays the dual functions of protecting the circuit, enhancing structural stability and providing insulation. The coverlay layer not only protects the circuit from the external environment, but also increases the durability of the circuit board and extends its service life. What’s more, it prevents any possible electrical short circuits and ensures the safety of your equipment.
Second layer: Silver paste layer
The silver paste layer inside the PCB is one of the key elements of the design. The main function of the silver paste layer is to provide excellent electromagnetic compatibility shielding. The issue of electromagnetic interference is particularly critical in medical devices, as any electromagnetic noise can affect the accuracy of the device and may even adversely affect the patient's treatment process. By using a silver paste layer at this level, Flex PCB can effectively shield external and internal electromagnetic interference, reduce unnecessary noise, ensure that the device works in an interference-free environment, and provide precise and stable operation.
Double-sided FCCL: Etching circuit on one side and keeping the other layer
Another major feature is that this flex PCB uses double-sided FCCL material. This material makes flex PCB both flexible and capable of carrying high-density circuit design. It is worth mentioning that this flex PCB for injection pumps has circuits etched on only one side, while a large copper layer is retained on the other side. This design also uses the copper layer on the entire surface to effectively block electromagnetic interference. inhibition. Large copper layers can help PCBs effectively reduce electromagnetic interference and provide a more stable transmission path for signals. The use of double-sided FCCL material not only improves electromagnetic compatibility, but also provides a more flexible and compact design for the syringe pump.
Electromagnetic Compatibility Management in Medical Equipment
In the medical field, EMI is an important issue that cannot be ignored. Electromagnetic interference may not only affect the normal operation of the equipment, causing the equipment to be unable to accurately control the amount of drug injection, but may also affect other medical devices and even affect the health of patients. This flex PCB effectively reduces these risks through a carefully designed multi-layer structure, the electromagnetic shielding effect of the silver paste layer, and the use of double-sided FCCL materials.
Efficient EMI shielding: The presence of the silver paste layer greatly improves the anti-interference ability of the board, allowing the syringe pump to maintain stable operation in a complex electromagnetic environment.
Stable signal transmission: Large copper layers not only help reduce EMI, but also provide high-quality current and signal transmission channels in the circuit to ensure the accuracy of the equipment.
Strong and flexible structure: The design of the flexible circuit board enables it to adapt to the complex layout of the internal space of the medical syringe pump while maintaining good stability under extreme conditions.
Conclusion
With its advanced process capabilities, Flex Plus is able to produce reliable and high-quality Flex PCBs to meet the needs of different application areas. The company uses precise manufacturing processes and high standards of quality control to ensure that each Flex PCB meets the design requirements in terms of electromagnetic compatibility (EMI) management, signal stability and structural reliability. Through high-precision lamination process, fine etching technology and the application of selected materials, Flex Plus provides customers with stable and durable circuit board solutions, which are widely used in medical, consumer electronics and industrial fields. Flex Plus always focuses on technological innovation, supports customers' specific needs with its process capabilities, and ensures the performance and reliability of products in actual applications.
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