Defibrillator teardown

[mdesm2005]

It's good stuff, but I have to take a break every few minutes to catch my breath...;)

[dtiydr]

A defibrillator (guess modern ones are similar) containes A LOT more electronics then i thought..

[dtiydr]

CE marked? I sure as hell wouldnt trust it..

[ChiTownWrx420]

Skip the bullshit. 5:00

[randacnam7321]

Those capacitors look like Sprague powerlytics.

[Zed1967]

You should try to mod a defib so you can use it to warm up a kebab when you get back from the take away. This situation would be hilarious in a geek sit com like The IT Crowd. ''It's no good, the conductivity of the chilli sauce can't provide the energy we require to kill all the bacteria with heat.'' Never mind we have plenty of toilet paper. :)

[mikeselectricstuff]

@Zed1967 Someone's already done something along those lines - google "defibrillator toaster"

[ANDREYgrava21]

could you make more videos on medical equipment....it's very interesting

[bytmeh]

19:11 he's not looking very well because hes about to have a claw jammed where the sun don't shine! ;)

[parp12345]

21:15 LOL!

[setoffo]

@21.36 ... WHAT HAVE YOU DONE!? Mike.. you ba..*grrr*... Poor patient there, poor poor patient!

[ChiplessStar]

Thanks for another excellent video. I was surprised the voltage was only (only!) 1.8kV because I know some of the manual defibrilators used up to 360J at 8kV. Quite a scary amount of energy from such a small package.

[turbochargedbrick]

Pitty you didn't try to power it up!

[mikeselectricstuff]

@turbochargedbrick I did, but as I didn't have the correct battery, with its ID chip, it didn't do anything.

[zzzzbest]

You said that the wire jumper links are placed by machines? I always thought through hole parts were placed by slaves in china on an assembly line and then put through the wave machine.

[mikeselectricstuff]

@zzzzbest the TH parts are definitely flow soldered - can't tell if auto inserted but due to the wide range of sizes they may well have been hand-inserted

[Fatkuh]

Very well made infomrative video! Keep going, I like it a lot!

[zaprodk]

Great tip with the bits !!!!

[TheCrazyInventor]

Awesome, I love the ending. :D

I also like the diagrams with the stick figure. You've put quite some work into this video.

[BigAl1048]

- the Rx ikon means by prescription only

[AintBigAintClever]

Good tip about sawing the back of the Torx bits for accessing deep screws :-)

[FyberOptic]

So basically at heart it's a PC. I always love finding devices which still run microcontroller iterations of early chips, particularly of x86. I've usually found V20/V30, but also the occasional 80C186. Z80 hardware seems more common, but it's more prone to end up in proprietary microcontrollers, where only reverse-engineering firmware reveals what the I/O ports control. x86 or not, though, running something like Star Control on a defibrillator is still a bit out of the question!

[rasz]

that stick figure guy was just lovely!

[douro20]

I'd like to see a Heartsine Samaritan- apparently it's the world's most advanced AED.

[mikeselectricstuff]

@douro20 You find me one cheap & I'll pull it apart! I'm happy to pay shipping!

I think a lot of the defib waveforms and detection criteria are set by standards derived from clinical trials, so not sure how much scope there is for variations other than clever circuitry.

[Afrotechmods]

Brilliant idea for a teardown!

[douro20]

I would imagine that all of the through-hole devices on this were soldered by hand.

[mikeselectricstuff]

@douro20 No - looks flow-soldered.

[douro20]

It's amazing that this thing doesn't have master-slave processors. I would think for redundancy that such a thing would be required by law.

[mikeselectricstuff]

@douro20 Not sure what the requirements are but there's quite a lot of extra logic on the CPU, so I'd expect there is significant reality-checking, watchdogs etc. Problem with multiple processors is you increase overall complexity & make it harder to test.

Glad I don't write code for things like this.

[NICKN0RT0N]

Interesting teardown, funny ending.

[ElektroHut]

One of the most interesting videos I've ever watched!

[nodariel]

lol @21:40

[CxC2007]

very interesting.

[robot797]

can i buy that flip dot thingy?

[mikeselectricstuff]

@robot797 Make me an offer

[robot797]

@mikeselectricstuff what do you need

i got many tubes and can get many old devices (and i has money)

[mikeselectricstuff]

@robot797 No room for more tubes - email me with a cash offer (Paypal only).

[mikeselectricstuff]

@robot797 changed my mind - search for flipdot on Ebay UK.

[2009mnasar]

Which Camera do you use to shoot these videos?

[mikeselectricstuff]

@2009mnasar Panasonic HDC-SD10. Bought cheap on ebay as faulty & fixed it. It's OK - I've no experience of other cams to compare with, but minor complaints are no external mic, no remote, manual lens-cap (it should at least beep if you turn it off & leave the lens open!)

[hla27b]

nice one Mike

thank you

[Serostern]

I got a set of torx security screws of allen wrench type. (L shape) - they are awesome for reaching down in holes =)

The defibs Ive seen they just filled the entire cavity with epoxy :c

Nice ending btw =P

[JumperOneTV]

Thanks a lot for this teardown! It's like a New Year's present :))

[orbiter8]

Glad you revived your stick man Mike :) LOL at the end too.