What do you print with your 3D printer? Key chains? More printer parts (our favorite)? Enclosures for PC boards? At Johns Hopkins, they want to print bones. Not Halloween skeletons, either. Actual bones for use in bodies.
According to Johns Hopkins, over 200,000 people a year need head or face bone replacements due to birth defects, trauma, or surgery. Traditionally, surgeons cut part of your leg bone that doesn’t bear much weight out and shape it to meet the patient’s need. However, this has a few problems. The cut in the leg isn’t pleasant. In addition, it is difficult to create subtle curved shapes for a face out of a relatively straight leg bone.
This is an obvious application for 3D printing if you could find a suitable material to produce faux bones. The FDA allows polycaprolactate (PCL) plastic for other clinical uses and it is attractive because it has a relatively low melting point. That’s important because mixing in biological additives is difficult to do at high temperatures.
Continue reading “3D Printing Bone”
The biggest problems with pharmaceuticals isn’t patents, industry reps, or the fact that advertisement to consumers is allowed; this only happens in the United States. No, the biggest problem with pills and medications is compliance, or making sure the people who are prescribed medication take their medication. For his Hackaday Prize entry, [Joe] is working on a solution. It’s a smart desktop medicine organizer, and you can think of it as a pill box with smarts.
The list of features of [Joe]’s organizer include automatic pill organization – each prescription is accessed independently of all the others. When it’s time to take a pill, the smart medication dispenser plops out a pill. You can check out the demo video [Joe] put together using M&M candies.
There are a few more features for the Smart Desktop Medicine Organizer, including connecting to pharmacy APIs to order refills, checking for drug interactions, and setting timers (or not) for different medications; meds that should be taken every day will be dispensed every day, but drugs taken as needed up to a maximum limit will be dispensed as needed.
It’s a very cool project, and you can check out [Joe]’s video for the project below.
Continue reading “Hackaday Prize Semifinalist: Smart Medication Dispenser”
[Rahul] works at a startup that produces cutting edge diagnostic test cards. These simple cards can test for enzymes, antibodies, and diseases quickly and easily. For one test, this greatly speeds up the process of testing and diagnosis, but since these tests can now be administered en masse, health services the world over now have the problem of reading, categorizing, and logging thousands of these diagnostic test cards.
The normal solution to this problem is a dedicated card scanner, but these cost tens of thousands of dollars. At a 24-hour hackathon, [Rahul] decided to bring down the cost of the card scanners by whipping up his own, built from a CD drive and an Arduino.
The card [Rahul] used, an A1c card that tests for glucose bound to hemoglobin, has a few lines on the card that fluoresce with different intensify depending on the test results. This can be easily read with a photodiode connected to an Arduino. The mechanical part of the build consisted of an old CD drive with a 3D printed test strip adapter. Operation is very simple – just put the test strip in the test strip holder, press a button, and the results of the test are transmitted over Bluetooth.
Not only is [Rahul]’s build extremely simple, it’s also extremely useful and was enough to net him the ‘Most Innovative Project’ prize at the hackathon in his native Singapore.
Silverleaf Medical products has created an electric wound dressing that staves off infection by killing microbes in an open wound and preventing other germs from getting in.
They call it the CMB Antimicrobial Wound Dressing, and it is made of polyester fabric woven with a proprietary material called Prosit. When the bandage is moistened, the Prosit generates a low voltage, killing germs in the wound. One of these bandages can be worn for 3 days at a time, and their clinical trials indicate that they are highly effective in treating infected wounds. Take a look at their brochure (PDF file) for some informative and stomach-turning before and after photos.