Tag Archives: engineering

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Micro Molding – It’s Not Just About the Size

By Sangita Viswanathan

Micro molding is has been debated over last number of years, and while size certainly plays a part in defining what it is, other aspects like precision, complexity and details involved are more the drivers for micromolding techniques.

Micro molding is has been debated over last number of years, and while size certainly plays a part in defining what it is, other aspects like precision, complexity and details involved are more the drivers for micromolding techniques.

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Medical Technology To Go

Solutions from the field of micro system engineering help to make faster, more flexible and smarter medical devices. The ambitious goal of the developers is to sustainably enhance the quality of patients’ lives through more mobility, faster test results on location, checking vital signs and blood values or through innovative therapy systems for the chronically ill.

Solutions from the field of micro system engineering help to make faster, more flexible and smarter medical devices. The ambitious goal of the developers is to sustainably enhance the quality of patients’ lives through more mobility, faster test results on location, checking vital signs and blood values or through innovative therapy systems for the chronically ill.

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Tom Maeder, Senior Editor, MedTech Intelligence

Making Translational Engineering Work: A Conversation with MIT’s Robert Langer

By Thomas Maeder
Tom Maeder, Senior Editor, MedTech Intelligence

For the past decade “translational science” and “translational medicine” have been cherished buzzwords, raising the prospect of faster, better, more seamless transfer of discoveries from bench to bedside. Too often, though, it doesn’t work. Differences in the cultures of academia and medical manufacturing, and a poor grasp of regulatory and reimbursement issues, or of what makes a bright idea into a clinically useful, commercially viable product have scuttled more than one promising innovation.

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Jeff Wickham, P.E. is the Principal at LifeHope Medical, Inc.
Ask the Engineer

Two Discussions on Cantilevered Snap Fit and Calculating Max Shear Stress

By Jeff Wickham, P.E.
Jeff Wickham, P.E. is the Principal at LifeHope Medical, Inc.

Q: I designed a cantilevered snap fit that extended as a continuation of a wall, but some of the prototypes cracked at the snap finger barb. Usually, the highest stresses are at the base of the cantilever. So why did the snap finger crack where it did? A: The snap finger would likely have cracked at its base if it were extending from a flat surface rather than as a continuation of a wall.  In this case, because it was extending from a wall there was no stress concentration at the base,…

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Jeff Wickham, P.E. is the Principal at LifeHope Medical, Inc.
Ask the Engineer

Three Discussions on Bonding a nylon component to an SLA part, First production run of an impeller assembly, and Plastic part with bosses for screws

By Jeff Wickham, P.E.
Jeff Wickham, P.E. is the Principal at LifeHope Medical, Inc.

Q: I tried to bond a nylon component to an SLA part, but the adhesive easily peeled off of the nylon even though I used what I thought was a very good adhesive. Any recommendations on how to get these parts bonded together? A: Plastics have different characteristics based on whether their material structure is semi-crystalline or amorphous. Plastics are composed of long polymer chains. In an amorphous structure these polymer chains are tangled together like a plate of spaghetti noodles. Typical ex…

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