2020
COMPONENTS
Solenoid and other miniature valves offer medical device designers several technical advantages, including the following: Portability One of the leading reasons solenoid valves and other miniature fluidic components have long been used in medical devices is that they combine lightweight construction with a simple, compact design to enhance medical device portability. Newer solenoid valve technology provides manufacturers with the ability to custom-configure standard solenoid valve components to fit more readily into tight device configurations, reducing weight without sacrificing function.
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Scalability The compact, simple design of many solenoid valves makes them especially useful for manufacturers who are developing pilot projects and need the ability to scale the production run of the end product up or down. Solenoid valves can be easily integrated into manifolds and other electropneumatic control subassemblies whose production can be cost-effectively scaled. Electronics integration Medical device manufacturers can benefit from the integration of microelectronics during valve manufacturing to help make their devices more intelligent while also enabling them to use a variety of digital communications protocols, such as Ethernet/IP or Profinet. Miniature electronic proportional valves combined with the proper electronic controls and feedback can control pressure, flow and other variables in a medical device. These closed-loop systems enable the engineer to design complex system controls while still relying on the valve manufacturer to deliver a robust, affordable package. 12
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Power management Solenoid valves are electrically powered, leading to two important design considerations: power consumption and heat control. Newer solenoid valves are typically available in a broad range of power profiles. If a 3.3-volt coil is the best fit for a particular valve, it is usually available as a standard variation. This means designers can better match the solenoid valve to the power capacity of the medical device, which can help extend battery life on portable devices and can also help control the heat generated within the medical device.
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Medical Design & Outsourcing
9 • 2020