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Medical wave springs: Designing with size in mind

02 August 2023

Medical device engineers strive for compact designs for a variety of reasons, such as portability, enhanced patient comfort, and increased efficiency. In many cases, a compact design requires compact components. To help designers to optimise the size of their devices, Simon Ward, Technical Manager of TFC, highlights the capabilities of wave springs.

Springs are commonly used in a variety of medical products, such as surgical instruments, medical devices, wearable medical technology, and orthopaedic equipment. They are commonly used as return springs for function buttons, where they can provide the necessary force to restore a button to its original position. Springs are also used to maintain electrical contact or compensate for assembly tolerances. 

While coil springs have conventionally served these purposes, there has been a shift in preferences, and wave springs are gaining traction as an alternative. One key reason for this is their space-saving advantage, as wave springs require less than half the space of a coil spring – delivering the same spring force with a smaller operating height. 

Read the full article in DPA's August issue

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