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stripes on hypodermic needles

stripes on hypodermic needles could be used to accurately approximate depth, which I read makes a difference.
  [vote for,

I haven't seen a needle with a ruling on it, yet I have read a study saying they researched the difference between a 1/4 inch and a 1/2 inch penetration depth and could now refer the new 1/4 inch for approval.

It seems like practitioners, and particularly developing world medical people could benefit from putting depth lines on hypodermic needles.

Who knows, perhaps it moves the efficacy 5% That is big when you consider an entire country.

beanangel, May 07 2018

Depth stop for punctures. https://www.ted.com..._moments_in_surgery
[2 fries shy of a happy meal, May 08 2018]

Prior art http://medent.usyd....20annulirostris.htm
[spidermother, May 11 2018]


       What is this "inch" you refer to ?   

       // when you consider an entire country. //   

       Giving an entire country an injection sounds like a challenge, although it is possible to give an entire country an enema once the national anus has been located. In the case of france, this is comparatively easy.
8th of 7, May 07 2018

       This is not, in fact, an entirely stupid idea. It also eschews the use of "at". Hence [+].
MaxwellBuchanan, May 07 2018

       What would you propose as the material of choice for the marks?   

       8th, doesn’t it occur to you that with 1/4” markings, there would be fewer gradations than with 1 mm markings, causing the injectee to panic less as it plunges ever deeper?   

       Oh, what am I saying, of course you have. Must remember with whom I am talking.
RayfordSteele, May 07 2018

       Doesn't sound dispractical. Could be a confeasible nonunilantiintelligent idea.
doctorremulac3, May 07 2018

       Depth markings on other types of needles such as biopsy needles appears to be known (from a quick Google search).   

       I couldn't find anything for normal hypodermic needles. However, I think what might be more practical would be a depth stop rather than depth markings.
xaviergisz, May 07 2018

       It would be far better to inscribe a measurement unit that people actually use (given that this is the present, and not the historical past) rather than some antiquated irrelevant unit of measurement which people would have to look up and use complex maths to convert over to normal units that are actually in use.
Ian Tindale, May 08 2018

       <looks at the steel ruler I bought last year, one side metric, other side inches> Yep. there are still people who are on feet and inches.   

       [+] for two explicable and good ideas
not_morrison_rm, May 08 2018

       //what might be more practical would be a depth stop// Actually, that's a good point. If a needle is meant to penetrate to a depth of 8mm, why not use an 8mm long needle?
MaxwellBuchanan, May 08 2018

       (+) Depth stop after puncturing skin or bone is a huge problem.   

       Cool TED talk by the guy who figured out the solution. [link]   

       It was hard to find. You'd think it would be at least one of the hits for the word 'needle'.   

       simple[+] The downside is that the most painless jab is a fast one, and it takes experience to learn that. A doctor trained to slowly push in to the right mark will be giving painful shots his whole career.
Voice, May 11 2018

       //what might be more practical would be a depth stop//   

       What about a needle whose length is adjustable? Just dial or otherwise adjust it to the appropriate measurement and jab away without having to think about it.
doctorremulac3, May 11 2018

       //jab away without having to think about it //   

       But that's what medics do anyway ...
8th of 7, May 11 2018

       Everyone is different. There still has to be some individual patient referencing to know what the marks mean.
wjt, May 11 2018

       //What about a needle whose length is adjustable? Just dial or otherwise adjust it to the appropriate measurement and jab away without having to think about it.//   

       Do these exist ? Would be a winner at the doctors - "Look, its only 1cm long !" (When it actually goes in 3 inches to the bone)
bigsleep, May 11 2018


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