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Chinese Man Builds His Own Prosthetic Hands

New submitter macbeth66 writes "Almost 10 years ago, Sun Jifa lost his hands in an explosion. Unable to afford the prosthetic hands recommended by the hospital, he built his own. From the article: 'After eight years of tinkering, he says he finally developed a working model that allows him to grip, hold, and mimic other necessary movements via a system of pulleys and wires.'"

32 of 144 comments (clear)

  1. Impressive! by steppedleader · · Score: 5, Insightful

    Seems like this would be hard to do without hands...

    1. Re:Impressive! by Compaqt · · Score: 4, Funny

      Why do you say that?

      After all, Abraham Lincoln built the log cabin he was born in with his own hands.

      --
      I'm not a lawyer, but I play one on the Internet. Blog
    2. Re:Impressive! by bored_engineer · · Score: 2

      My first reaction was the same as yours. I 'm pretty darn impressed. I'm also perversely pleased to see that fishing with dynamite isn't just for my cousins. Fishing with dynamite: the equal opportunity dipshit thing to do. (The article, of course didn't explicitly say so, but I can't figure any other way that fishing and dynamite would go together. Can anybody offer enlightenment?)

    3. Re:Impressive! by wierd_w · · Score: 5, Informative

      Dynamite is very effective at causing a major shockfront in the water, that ruptures the fish's swim bladders, which are used to control the fish's altituded in the water. Once ruptured, the fish can no longer swim, and will float listlessly on the top. It is usually also directly fatal to the fish.

      It is a very indescriminate way to fish, but also *very* effective. It can completely denude a body of water of all fish.

      if this man really was using dynamite to fish, it sounds like he got hold of one with a very fast burning fuse, which happens when the sticks get old. He is lucky to be alive at all.

    4. Re:Impressive! by DriedClexler · · Score: 4, Funny

      He had help from M. C. Escher.

      --
      Information theory is life. The rest is just the KL divergence.
    5. Re:Impressive! by wierd_w · · Score: 5, Informative

      Quite.

      Dynamite (Authentic) is nitroglycerine, suspended in an inert matrix. Originally sawdust, but other inert matrices have also been used historically, such as diatomaceous earth.

      The sawdust form is especially vulnerable to becoming old and "sweaty". Essentially, the suspended nitroglycerine wicks its way out of the matrix, and toward the surface, where it forms a "coating." This is bad for a large number of reasons:

      1) Nitroglycerine is easily and readily absorbed through the skin, and is a well known cardiac-suppressant.

      2) Nitroglycerine, without the stabilizing matrix, is a notoriously sensitive contact explosive.

      3) The sweated nitroglycerine can wick up into the fuse, making it burn VERY quickly; FAR too quickly to throw away once lit, making old sticks unsafe for any purpose. It will explode almost instantly.

      For these reasons and several others, the use of genuine dynamite has fallen out of favor in nearly all developed and developing countries in favor of more stable and less toxic/sensitive high explosives, like PentaErythritol TetraNitrate (PETN), and TriNitroToluene (TNT).

      Genuine dynamite is fairly rare, and it is much more likely that this chinese fisherman was using home-made devices, like nitrogen fertilizer bombs made from ammonium nitrate and kerosine, but it could be possible he has/had access to the genuine article.

       

    6. Re:Impressive! by nukenerd · · Score: 2

      If he can build a set of working hands without hands, more than most people could do, why does he need the hands?

    7. Re:Impressive! by FatLittleMonkey · · Score: 2

      Imagine what he can build now.

      --
      Science is all about firing a drunk pig out of a cannon just to see what happens.
    8. Re:Impressive! by RabidReindeer · · Score: 3, Funny

      Obviously he took a leaf from the Computer Science book, specifically the chapter on compiler bootstrapping. How do you compile a compiler?

      You build by hand a crude compiler and use it to compile a more complex one, use that to compile a more complex one, use that to compile a more complex one, etc

      Obviously he started with hooks and worked his way up to full hands from there.

      The hard part was getting past the stage where he had scissors.

    9. Re:Impressive! by Dodgy+G33za · · Score: 5, Insightful

      You do realise that by asking a question like that you might find yourself on a list somewhere? Maybe not at the top where Julian Assange rules supreme after OBL's demise, but on the list none-the-less.

      Oh bugger, that probably means I am on it now too.

    10. Re:Impressive! by Dodgy+G33za · · Score: 3, Funny

      Fancy using OTOH on this article, you insensitive clod!

  2. That glorious by vencs · · Score: 4, Funny

    High five he had after finishing it!

  3. It's not just that he built his own prosthetics by andreicio · · Score: 2

    It's that he did that with no hands!

    1. Re:It's not just that he built his own prosthetics by Lord_of_the_nerf · · Score: 5, Funny

      He's a handyman.

  4. Groovy by Lord_of_the_nerf · · Score: 5, Insightful

    I went from 'go Chinese man!' to 'one of those could have been a chainsaw!' remarkably quickly.

    I'm trying to decide if that makes me bad.

    1. Re:Groovy by Sussurros · · Score: 2

      I apologise in advance for this but imagine a beowulf cluster of those!

      --
      I said - don't look Ethel!..., but it was too late..., she'd already looked.
  5. Handy by dark+grep · · Score: 2, Funny

    He must have become progressively handy over the years, since he did it himself and no one gave him a hand. I wonder if we will hand off the project now? I guess if nothing else, he has become more handsome as a result of his efforts.

    1. Re:Handy by dark+grep · · Score: 3, Funny

      Hey, at least he has come to grips with the digital age.

  6. See communism works after all by zippo01 · · Score: 4, Funny

    See communism works after all. You start with a need, put in a little hard work and entrepreneurialism and poof, new arms. Of wait that's capitalism. Disregard.

    1. Re:See communism works after all by Darinbob · · Score: 2

      No, state provides for everyone unless you're not high up in the party. Wait, that's communism.

    2. Re:See communism works after all by Anonymous Coward · · Score: 3, Insightful

      How is China a Communist state?

    3. Re:See communism works after all by houghi · · Score: 5, Funny

      Communism is bad, because he needed to pay for his own medical needs. Of wait that's capitalism. Disregard.

      --
      Don't fight for your country, if your country does not fight for you.
    4. Re:See communism works after all by rohan972 · · Score: 2

      The major difference between Communism and Capitalism is that in the first the workers own the means of production, in the latter these are owned by someone else.

      Yet here I am, a worker who owns my own means of production. Not the pseudo ownership of state control, which isn't ownership for the masses in any meaningful way, but me personally having the right to my own tools and equipment to be productive in my chosen occupation, so I can negotiate contracts to work without a "boss" as an intermediary taking the profits.

  7. Gotta hand it to him by Anonymous Coward · · Score: 5, Funny

    That is quite a feet.

    Puns totally intended.

  8. Inspiring by asmkm22 · · Score: 5, Insightful

    Say what you will about the Chinese but, if this were an American, he'd be shopping for a book deal and making millions as a motivational speaker. He'd probably get some weird Craftsman sponsorship as well. Instead, he seems genuinely interested in helping other people get access to what he built. It's inspiring, to say the least.

  9. 3D printing for cheap prosthetics by Morgaine · · Score: 4, Insightful

    This man deserves a medal for ingenuity under extreme hardship.

    One thing that added unnecessarily to his misery though was that the hospital recommended a prosthetic that he couldn't afford. It's not a huge stretch of the imagination for hospitals to run cheap RepRap-type 3D printers for such needs and print out basic parts on demand. Both the building and running costs are very low indeed.

    Of course such parts would be very poor compared to professional prosthetics or even professional 3D printing, but when the choice is between that and nothing, it's hard to argue against it. And the flexibility of such printing means that it is easily adapted to evolve with individual requirements, and replacement of printed parts is almost cost-free when they break or wear out.

    It seems a good fit for this kind of unfortunate situation, and it might have made this man's days more bearable as he worked on his own solution, or indeed contributed to it where plastic is more appropriate than steel.

    --
    "The question of whether machines can think is no more interesting than [] whether submarines can swim" - Dijkstra
    1. Re:3D printing for cheap prosthetics by Anonymous Coward · · Score: 4, Interesting

      This man is a badass. If you look at the pictures everything is made from scrap.

      Problem is the egregiously high cost of some medical devices. Outrageous in most cases.

      However, once he starts building them for others his costs are going to go up, or he will have to absorb a huge amount of liability. It's not always that simple since the majority of most medical device costs are the insurance. That's most often why something that would be a few thousand is all of the sudden 20k in the medical industry. Nothing all that different in the specs, just the insurance.

      Material costs will go up once he starts using different materials as well.

      We could send this guy a 3D printer and some materials (assuming he has the sophistication to use the software) and it might just end up getting him in trouble with the authorities or landed in court.

      All that being said it would be awesome if this guy could get paired up with a Chinese engineer and they could build low cost prosthetic based on his design.

      Definitely an inspiration.

    2. Re:3D printing for cheap prosthetics by PSVMOrnot · · Score: 2

      For that sort of application most of the prosthetic would/should be mass produced. As awesome as 3D printers are they are really for prototyping and customization rather than cheap manufacturing. I would see it more as using a 3D printer to print off some parts for customized fitting to the patient, and using off the shelf parts for the rest.

      On the other hand, there are plenty of robotic hand projects which could be adapted to function as prosthetics. So, go take a look and see if you get inspired.

  10. Re:Hello to all you with the smart remarks by Penurious+Penguin · · Score: 2

    Oh come now my dear AC, don't be so drab; we all know the Chinese will be taking over shortly and just want to have a little fun before hand

    --
    Forward! -- Emperor Norton, 2012
  11. I wonder by birdspider · · Score: 2

    why no one bothers to hire him. I can imagine that his (hands-on) experience, both form producer and consumer side regarding prosthetics is quite rare and china has to be in great demand of such skills, that is being such a large and industious country.

  12. Few float by SgtChaireBourne · · Score: 5, Informative

    Actually only a few will float to the top if you use explosives. The majority will sink to the bottom and go to waste. If you want to do it right, stun them with electricity, but not enough to kill them, and then they will float to the top. That way you can also release live the ones you won't eat. I've seen the DNR gather fish for their surveys using stunners and the equipment is rather simple.

    --
    Beta is broken and the link to classic doesn't work. Stop wasting our time or there won't be anybody left here.
  13. Re:Fullmetal alchemist!... by Jade_Wayfarer · · Score: 2

    Yes, it even looks like automail. But this is Slashdot, people here are not eager to admit their knowledge of these "ugly Japanese cartoons". Now, if only you had mentioned some obscure real-life technology, an instantly assembled group of 4-6 digit id geeks would appear here in comments. They would brag about "good old times", when they worked on most advanced personal computer of that time (Apple 2, of course), and how they built their first ham-radio module in kindergarten, and once had a dinner with Heinlein and Clark at the same time, and it was so awesome, that everybody else have to immediately get off their lawns.

    For everything else there is TVTropes.

    --
    Absence of proof != proof of absence.