Flying Defibrillators

It’s a sad reality that, by and large, cardiopulmonary resuscitation (CPR) doesn’t save lives. Despite all the “you could save a life” marketing aimed at getting people certified in CPR, the instances where even the prompt application of the correct technique results in a save are vanishingly rare, and limited mostly to witnessed arrests in a hospital. Speaking from personal experience, few things are sadder than arriving on-scene as a first responder to see CPR being performed by a husband on his wife and knowing that no matter what we do, it’s not going to end well.

The problem is one of time. Hearts only rarely just stop beating outright; usually some kind of arrhythmia first causes the heart to beat ineffectively, leading to hypoxia and loss of consciousness. From there it’s about a four-minute trip to brain death, but in that brief window chances are pretty good that the heart can be restarted. That’s why witnessed cardiac arrests in a hospital have better survival rates — the needed electric reboot of the heart with a defibrillator is only as far away as the nearest crash cart.

The advent of the automatic external defibrillator (AED) has increased the odds for survival of out-of-hospital cardiac arrest (OHCA), but the penetration of AEDs into public settings is far from complete enough to put one within a few minutes reach of everyone who might need one. So it’s only natural that thoughts would turn to delivering AEDs to cardiac incidents by drones. It seems like a great idea, but will it work? Continue reading “Flying Defibrillators”

2015 THP Inspiration: Medical Hacks

Last year’s Hackaday Prize focused on building something cool, useful, and open. This led to builds as impressive as quadcopters nicknamed the Decapitron, to devices as useful as an Everything Radio. It’s a big field, and if you want to build something that will win, you first need an idea.

This year we’re making that part of the process a little easier for you. We’re looking for builds that matter, be they devices that monitor pollution, feed entire populations, lay the groundwork for powering an entire city, or reduce the cost and increase access to medical care.

pillminderMedical builds are a tricky subject, but over the years we’ve seen a few that stand out. Some can be as simple as a pill dispenser that tells the Internet when you don’t take your meds. This type of build is actually pretty popular with several iterations, one that works with pill bottles.

Maybe a gadget you could find in a drug store isn’t your thing. That’s okay, instead you can turn your attention to advanced medical imaging, like 3D printing a brain tumor and preventing a misdiagnosis. We’ve seen 3D printed MRI and CT scans for a while now, and coming up with a system that automates the process would be a great entry for the Hackaday prize.

prosOf course with 3D printers, you have a bunch of prosthesis applications; from a nine-year-old who designed his own prosthetic arm, a printed prosthetic arm for a stranger, or something simpler like our own [Bil Herd]’s quest to rebuild a finger.

These are all simple builds, but ones that clearly meet the criteria of doing something meaningful. The sky is the limit, and if you want to improve the desktop CT scanner, learn CPR (correctly) from an automated assistant, or be brought back to life with your own design, that’s all well within the goals of this year’s Hackaday Prize.

Developer Saved Years Later by His Own Hardware

Bryan is a computer neophyte (he needs help turning his computer on), but he has a basketball story. His team was playing in a crucial basketball playoff game at the club. They were down by two late in the game and he just couldn’t get one of his players to play defense. This player was a great shooter and that is about it — burying a three that put the team up for the first time. After sinking it he just stood there admiring his masterpiece while Bryan screamed at him to get back on defense (he rarely played D and he didn’t that game either). Instead, he flat lined and went down on his face– heart attack!

Of course that player was me and that was an awful day. But I’m still around to tell the story… as a hardware designer years before I didn’t know that I’d bet everything on one particular project.

Continue reading “Developer Saved Years Later by His Own Hardware”

Smart CPR Dummy Makes Sure you Do it Right

Have you ever taken a First Aid & CPR training course? Don’t you just love the realism of the dummy mannequins you get to practice on? [Park, Qurashi, & Chen], who are students of Cornell University, thought the dummies could use an intelligent upgrade.

It’s the final project for their electrical and computer engineering course ECE 4760. And what they’ve done is successfully created a budget friendly CPR not-so-dumb dummy using the venerable ATmega1284 microcontroller.

The dummy can sense when chest compressions are given, if the nose is plugged properly when breaths are given, if the head is tilted back properly to open the airway, and it even makes use of a microphone to detect if breaths are given properly! While it does this, it uses LED eyes and an LCD screen to provide training feedback to the student. Once the students are sufficiently practiced, it also has a “real” mode that doesn’t give you any feedback to make sure the students truly learned the technique. Continue reading “Smart CPR Dummy Makes Sure you Do it Right”