At this year’s AAAS (American Association for the Advancement of Science) annual meeting Eric Tremblay from the Swiss Federal Institute of Technology (EPFL) demonstrated the latest prototype a contact lens with built in optical zoom. Now for someone who’s most used phone app is a magnifying glass so that I can zoom in to read the nutrition information labels this is very exciting news indeed.
Even though I’m confident that the pace of medical technology is going to make life extension possible for my fragile body, there will be an intermediate period when my body is failing and I’m trying to hold out long enough for this exponentially improving technology to kick-in. And that middle decade or so is definitely one I’d like to spend, if not with perfect eyesight, with vision that doesn’t stop be from going about my day to day activities.
Age related macular degeneration alone affects around half a million people in the UK alone so if they can produce a commercial version then there is hope for a lot of people. The first prototype was released in 2013 and since then the team have worked on making them oxygen permeable (so that the eye can still breathe and therefore the contact lens can be worn for longer) and improving the image quality – so I’ll certainly be looking forward to their next release.
We live in a high tech society, yes? Moore’s Law has seen computer power grow so fast that most of us carry more computing power around on our phone than was used to send people to the moon only a few decades ago. So why is it that the basic measurements for health are still a thermometer under the tongue and blood pressure based on a cuff round your arm at a specific time?
There are so many areas that rapidly improving technology can help in healthcare from drug discovery to laboratory automation, however here I’m going to focus on diagnostics.
There are already a few recently launched swallowable capsules that take images of a patients digestive tract as they pass through, reaching places its generally not possible to examine from the top or bottom (so to speak!) – these are known as capsule endoscopies and are typically quite a mouthful with dimensions of 1 to 2 centimetres. Give or take this is about the size of commercially available transistors in the 1950s compared to the 2014 fabrication technology of 14nm – that’s a million fold improvement in 60 years or a halving of size every 3 years (sorry Mr Moore, not your usual 18 months but this is back of an envelope maths so close enough).
So what happens when medical technology meets Moore’s Law? To allow sensors to monitor the bloodstream from within they’ll need to be about the size of a typical red blood cell, say 6 µm, so a two thousand fold improvement – easy, we should have that 33 years. Which means in the 2040s we could all have swarms of sensors monitoring every part of our bodies – checking blood pressure constantly at thousands of points in our circulatory system providing early warning of any constrictions that would indicate damage or plaque build up. And many years before that you’ll be able to take a daily capsule – not another vitamin but a daily cheap diagnostic for any digestive tract problems. No doctors will need to be involved unless something unusual is detected – maybe results sent to your smartphone, but already that sounds a bit dated – more likely sent to your personal health centre which all homes will have that monitors your every move, breath and perspiration to check you’re in the best possible condition.
Two research announcements caught my eye today which show that healthcare has turned into a technology and is therefore improving exponentially.
Firstly the Institute of Microelectronics Barcelona have attached barcode chips to immature egg cells. Initially to be used for assisted reproduction when eggs need to be tracked and monitored, this could easily be modified to tag any cells which could then help with diagnosis – for example (and I’m totally guessing here) a batch of chipped cells could be injected or swallowed and then the whole body scanned to monitor where they end up – highlighted if organs are working as expected.
Then (on the other side of the chip sandwich) theres the human on a microfluidic chip. The Fraunhofer Institute for Material and Beam Technology have created a 1:100,000 scale human being (the organs anyway) which allows drugs to be checked for toxicity and efficacy in a much more realistic environment than today’s simple tissue samples. A device like this potentially allows every organ in the body to be tested early in the drug development process, minimising the risk of problems that only occur when the drug interacts with a living human body.
And in case you’re thinking that’s still a lot of work to do all that testing – check out this video on the BBC News website showing not only automated testing, but a robot that always makes its own decisions about what to test to make it even more efficient: http://www.bbc.co.uk/news/technology-31124843