If required in the product, the spring is probably the least expensive component of the assembly. However, if it does not function as intended or fails, it can become a warranty issue which can be quite expensive as far as repair, loss of sales and product reputation.
There has been a sharp increase in regulatory oversight in the medical device industry. If your manufacturing requirements aren’t specific enough, your contract manufacturer might unknowingly make a problematic substitution. Which requirements are most important for your product? This week’s Ask the Engineer addresses material types, critical features and measurement methods.
New and Revived: Your questions on adhesives usage answered by Christine Salerni Marotta at Henkel-Loctite.
Pose your product development questions to Jeff Wickham , Principal, LifeHope Medical Inc.
Q: What are the best materials for electromagnetic applications? A: This depends on the application, and on factors such as the performance, cost and specific geometry. Electromagnetic materials are commonly compared using B-H curves (B stands for induction and H for magnetizing force), which are basically a plot of how much magnetic flux a material will carry versus the intensity of the magnetic field. This can be experimentally seen by using an electromagnet and observing how strong…