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Mosquitos Provide Design Inspiration for Next Generation Microneedles

July 18th, 2008 Justin Barad News

Engineers from the Indian Institute of Technology Kharagpur and Tokai University of Japan have developed a new hypodermic microneedle that is completely painless. The aspect of the design that is based off of nature’s grotesque horror, the female mosquito, is the unique micro-electro-mechanical based suction system. The system uses an intermittent sucking motion to draw up blood, which is how most god-awful mosquitos get access to our precious bodily fluids.
Conventional needles have an outer diameter of around 900 microns, while this new design has a diameter of 60 microns. The device is being designed in hopes that it can be used for glucose monitoring, blood draws, insulin pumps and other drug delivery devices.
Designs for microneedles have been thrown around the science world in the past, but those previous designs usually used a much smaller needle length as well as a more brittle material, silicone dioxide. This design uses titanium for a much more snap resistant needle. The needle is long enough to reach 3 millimeters deep into human skin, which is the depth needed to reach superficial capillaries.
The main challenges facing this device are cost and feasibility of manufacturing. I think they also have a marketing issue, because some people really truly cannot stand mosquito related paraphernalia. I want my blood back you thieving insects!
New Scientist via Gizmodo..
Abstract in Journal of Applied Physics…

Justin Barad

Justin Barad is a board eligible pediatric orthopaedic surgeon. He did his fellowship at Boston Children's Hospital in the Harvard Combined Orthopaedic Surgery program and his residency at UCLA. He is also the Founder and CEO of Osso VR, a clinically validated surgical simulation platform. His interests include Virtual/Augmented Reality, robotics, surgical navigation and 3D Printing/Scanning, He is always looking to discuss the latest and greatest in medtech. He has been writing for Medgadget about medical technology since 2006 and also has several research publications and presentations.

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