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Solenoid valve for medical device
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By: admin
- Oct 20, 2023
- 72 Visit
Pneumatic components are used throughout the medical device industry, due in major part to their reliability and the cleanliness of compressed air for controlling the flow, direction, and pressure of gases (e.g., oxygen) or fluids being processed by a device. Solenoid valves are commonly used by medical device manufacturers for applications that require reliable and highly responsive miniature valves with extremely low leak rates to meet FDA standards.
The life sciences industry has a constant demand for high-performance devices that leverage advances in fields such as material sciences and electronics to improve device longevity and dependability. Solenoid valves are being widely used to help satisfy this demand. Some examples of the medical device applications in which solenoid valves are increasingly used are oxygen delivery systems, diagnostic equipment, patient monitors, ventilators/respirators, gas chromatography, and other equipment using flow-switching devices.
Recent improvements in solenoid valves are helping medical device manufacturers use energy more efficiently, build more compact and portable equipment, and manage issues such as heat dissipation more effectively.
Solenoid valves are also commonly used in medical devices because they are relatively inexpensive, reliable, and simple to understand. A solenoid essentially consists of a wire wrapped around solid steel and iron. When current is passed through the coil, it becomes electromagnetically charged such that the movable core draws into the coil when current flows. This principle is used to make a switch or, in the case of a mechanical device, a valve.
Reliable Performance
Pressures in most medical device applications are typically lower compared with other pneumatic applications—often 1 bar or less—although some devices, such as ventilators, can require larger valves delivering 180 L/min of an air-oxygen mix at 2 bar or higher. It is this flexible range of options, combined with dependable, long-lasting operation, that has made solenoid valves well-suited to an expanding range of medical device uses.For example, they form an essential component of dialysis machines, in which a pair of solenoid valves control the blood flow. An automated dosing machine that delivers medicine into the blood flow (either in a clinical setting or via a device worn by the patient outside the clinical environment) also uses solenoid valves to precisely meter drug delivery.
Solenoid valves offer medical device designers a number of technical benefits, as well as some key factors to consider in choosing the right component based on a device’s required functionality and usage. These factors include the following:
- Portability.
- Power management.
- Scalability.
- Integration of electronics and pneumatics.
- Data acquisition.
Lightweight and Compact
One of the leading reasons solenoid valves and other pneumatic components have long been used in medical devices is that they combine lightweight construction and simple, compact design to enhance medical device portability—a key requirement across many applications.
One area of solenoid valve technology that has recently been improving is the ability of manufacturers to custom-configure standard solenoid valve components to fit more readily into tight device configurations by reducing weight without sacrificing functionality. Along with more light-weight valve components, these advances continue to be driven by the needs of patients, healthcare organizations, and medical device manufacturers.
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