Another fantastic teardown. It was really neat seeing traditional CMOS logic chips up close. I used to use the 4000 series a lot before microcontrollers made things so much more versatile. (But I'd still use CMOS if it was better suited to a simple task.)
i have a implantable defibrillator it has shocked me quite a few times to keep me going i feel like a cat with 9 lives it shocks you at 41 joules feels like getting hit with a baseball bat it amazes me how small they are
Rikard Bengtsson its a defibrilator - thus it only fires when he does not have a normal sinus heart rhythm. As the name suggests, it stops the heart from 'fibrilating'...kind of like a seizure where the sequence of 'brain pulse, this ventricle, that ventricle' doesn't happen in order. The defibrilator stops this bad pattern by shocking the heart, hopefully resetting (stopping it entirely) it from goofy random rhythm back...in the hopes it will take the next brain signal and restart normally.
***** I guess there's really no need for warning, since you'll probably feel improper beating of the heart before defibrillator kicks in. Joe Schmoe I wonder, how and how often do you recharge it? Wireless charging?
I have to say, this is brilliant. I guarantee you were a nightmare as a kid, taking all yer toys apart. Don't worry, I was too....lol. I've often wondered what those pacemakers were all about. I think they use titanium because its one of very few metals our bodies accept and will even fuse with, though i may well be wrong.
Subed to u a year ago, YT unsubed me!! Glad I found you Mike. Love your channel a lot! I just put up inside a Geiger counter, marantz 1060, power inverters, lots a stuff. Your video on the X-ray machine was EPIC!!' So interesting/. You have one of the best channels on the tube! Thanks!!!
wow i keep finding your channel, relatively small but every year or two I end up clicking on your video coz its the only one on youtube covering niche topics. keep it up. cool handdrawn? fiberglass? circuit board! I was surprised to find out that there are still about a half dozen people living (in france i think?) with nuclear powered pacemakers. their battery is apparently "good for life"... or ~25+ years. theres a study out there somewhere about how much money they have saved not having to be replaced. i would imagine they just use the spaceship style of wrapping thermocouples in something hot? ive always wondering what their xrays/CT's would look like... if there would be any radiation flashes visible lol. they apparently track those people carefully and make sure they have a regular burial coz the big issue is what if they get cremated and you cause a nuclear waste issue lol. tech back then was so much cooler in the 60s and 70s. interesting on this tear down that there were no sparks when you were using the Dremel. i suspect titanium? they use surgical steel/high chromium stainless now a lot but i think there is an advantage to titanium since xrays go through it so much more easily and you could theoretically inspect the inside of a pacemaker and identify a damaged capacitor or something? the reed switch is for the ER doctor. sometimes pacemakers go crazy and start shocking a rhythem that maybe shouldnt be shocked. can cause a lot of discomfort if youre getting blammo'd over and over and i imagine its bad for the battery. every ER has a big ring magnet stuck to some metal surface around where patients are usually triaged that can be used to turn off a hyperactive pacemaker. anyways, never even heard of a lithium iodine battery. very cool video. have a good one!
My father worked at Intermedics Freeport starting in the early 80s. He worked with some of the people who developed that one. I believe these could be programmed, in some extremely limited fashion, like target resting heart rate, once it was implanted.
That magnetic field switch is used to actually turn the pacemaker on and off. If there is a malfunction of the device a donut shaped magnet can be placed over the unit to deactivate it. Or at least with modern ones that is the case.
Looks really well shielded. I suppose it would have to be through, walking past a taxi rank and they key the mic, then yer ticker stops...lol. I didn't realise surface mount was in use back in early 70s. The plated through board looks a bit DIY though.
Amazing technology for 36 years ago! I didn't know that laser trimming was done at that time. Do you think that the programming was simply changing the state of flip-flops? I suppose EPROM was around then (not EEPROM) but I didn't see any evidence of it in this device.
hermetic packages are easy to remove, all you need is tweezers (like at 5:52)and sometimes a solvent, if there's glue holding the package or a dremel if the package is soldered together or both, like at 4:40. (in that case, the package was problably welded or glued using epoxy.) unlike epoxy or plastic packages, in that case you will need to dissolve the epoxy or plastic using acids or using a dremel but the dremel is very imprecise so acids are more precise... -0v or lower means the battery is dead and it only conducts electricity, it does not store any...
Intermedics was a USA company to manufacture pacemakers, the one shown is 1980th products, the company itself was acquired by what is now Boston Scientific, and the trade name ceased to exist, it goes without saying that Cardiac devices of today are much more sophisticated.
I always find the vintage obscure stuff more interesting, but then I do collect vintage computers among other various collections. Are those PCB's going on the PCB wall?
I've been working on getting you some. One of my dads friends is a cardiac surgeon and I'm sure he could get some for me I just haven't see him lately .
Nice tear down! [EDIT: I thought the coil was a charging circuit, but not the case] Someone mentioned Solid State Scientific -- their logo was a cube with "S" on each side. I worked for a large analog company fresh out of school, and half the fun was our designers would use "freespace" to hide a little drawing. Goose Egg? Only bummer to implanted devices, is no more TIG nor Plasma use. Haven't done it, but two years away. Irony is if the Direct Brain Stimulator (DBS) works well, my hands will be stable enough to TIG weld.... uh oh. :)
Hello man who knows the stars :) tell me is it possible with DIY way to build a microwave technigue using device that finds titanium or nuclear battery in friends body ? me and friends are normal arduino builder nerds.
its a long life battery lithium and does not recharge. the coil is used to produce the charge from a very small current - 2.7V @ 10mA to produce 20V & 120V depends on patient. as it only produces this charge very rarely it would last 5 years new models last longer and can be charged through inductance.
Standard CMOS, nice little bifet opamp and those Vishay resistors with the bare die transistors. I could probably ID the transistor, though you will find it is a run of the mill low power NPN or PNP device, typically 100mA 30V process, and Ft of around 250MHz.
Is it posible the coil is for wireless charging? If you ever get one of these running I would be very curious to see the output waveform and p-p voltage.
I know later models are wirelessly charged. Pancakes are perfect for inductive charging. I would think a com ant for close range (near contact) would be much much smaller.
Always wonder if a Tesla coil will interfere with these? The standard practice is to warn that they can, but I suspect the RF wont, but perhaps the magnetic field would damage the updating facility. Maybe worth an experiment if you get more.
Nice things you study ! does a medical companies made nuclear battery radiate ? can i trust my painreducer implant not to radiate ? Battery told to last 15 years.
mikeselectricstuff Thats an awfully big coil for communications. Looks almost like an inductive charging coil to me. Of course.. then you mentioned it was from the late 70's lol
Pity you pulled the pacemaker apart. It looks very similar to the early 1970's lithium-iodide powered devices manufactured by Cardiac Pacemakers Inc; which offered longer power-cell life and significantly improved reliability.
Chips from around them would've probably been made using ~3-5um processes. Compared to today's~ 14-10nm processes. Crazy to think about how much smaller that is. Honestly it's just crazy to think something that large, where you can practically see all the traces and parts can do any kind of "logic". I mean I get it, it's just amazing. I love this sort of stuff, but it's beyond what I've learned.
you think that's large, imagine the size and complexity of the earliest analog computers. TTL and 4000 logic was a huge step ahead of the ENIAC days when a comparator took 4 or 5 tubes and a box the size and power consumption of a toaster oven.
The WITCH put Pat's head in the microwave oven. Around and around it went, its eyes rolled up all crazy. It mouthed the words, "lehhhhttttt meeeeeee owwwwwwtttt." And then it POPPED.
Say you needed a pacemaker because at any moment in your future your heart may just stop. Would you pay for the expensive one, or the pacemaker that's half the price of the first? Medical devices require a ridiculous amount of R&D, testing ect. This costs a lot for a company, and without some sort of profit, how do you expect them to research and update the technology for future models?
THere's a kid in africa needing one of these 70's pacemakers and you are destroying it. As a mixed black eskimo female size plus transwoman, this offends me.
Another fantastic teardown. It was really neat seeing traditional CMOS logic chips up close. I used to use the 4000 series a lot before microcontrollers made things so much more versatile. (But I'd still use CMOS if it was better suited to a simple task.)
bigclivedotcom indeed, fran's latest video is gonna cause a run on cmos counters and NE555s... lol
Great to find you here I wondered how this mistery machine works .....might be an piezo occilator to give pulses
"I've got another one coming but I've got to wait a few months before it comes out of him"
i have a implantable defibrillator it has shocked me quite a few times to keep me going i feel like a cat with 9 lives it shocks you at 41 joules feels like getting hit with a baseball bat it amazes me how small they are
Does your heart stop?
Rikard Bengtsson its a defibrilator - thus it only fires when he does not have a normal sinus heart rhythm. As the name suggests, it stops the heart from 'fibrilating'...kind of like a seizure where the sequence of 'brain pulse, this ventricle, that ventricle' doesn't happen in order. The defibrilator stops this bad pattern by shocking the heart, hopefully resetting (stopping it entirely) it from goofy random rhythm back...in the hopes it will take the next brain signal and restart normally.
i dont drive anymore not a safe thing to do my wife does the driving i have to be careful doing electronics i dont to fry any of my projects
***** I guess there's really no need for warning, since you'll probably feel improper beating of the heart before defibrillator kicks in.
Joe Schmoe I wonder, how and how often do you recharge it? Wireless charging?
I have to say, this is brilliant. I guarantee you were a nightmare as a kid, taking all yer toys apart. Don't worry, I was too....lol. I've often wondered what those pacemakers were all about. I think they use titanium because its one of very few metals our bodies accept and will even fuse with, though i may well be wrong.
I'm amazed at the sophistication of such a device from the 70s, but a bit disappointed at the apparent lack of progress since then.
Landrew0 why spend milions of dolars to improve something that does it’s job
I was wondering if those chips have military specs. They looks like those used in the Apollo-era spacecrafts.
Fascinating look inside some old school IC's, thank you so much.
love these teardowns :) keep it up Mike :)
Subed to u a year ago, YT unsubed me!! Glad I found you Mike. Love your channel a lot! I just put up inside a Geiger counter, marantz 1060, power inverters, lots a stuff. Your video on the X-ray machine was EPIC!!' So interesting/. You have one of the best channels on the tube! Thanks!!!
Make a zippo of the can
wow i keep finding your channel, relatively small but every year or two I end up clicking on your video coz its the only one on youtube covering niche topics. keep it up. cool handdrawn? fiberglass? circuit board! I was surprised to find out that there are still about a half dozen people living (in france i think?) with nuclear powered pacemakers. their battery is apparently "good for life"... or ~25+ years. theres a study out there somewhere about how much money they have saved not having to be replaced. i would imagine they just use the spaceship style of wrapping thermocouples in something hot? ive always wondering what their xrays/CT's would look like... if there would be any radiation flashes visible lol. they apparently track those people carefully and make sure they have a regular burial coz the big issue is what if they get cremated and you cause a nuclear waste issue lol. tech back then was so much cooler in the 60s and 70s.
interesting on this tear down that there were no sparks when you were using the Dremel. i suspect titanium? they use surgical steel/high chromium stainless now a lot but i think there is an advantage to titanium since xrays go through it so much more easily and you could theoretically inspect the inside of a pacemaker and identify a damaged capacitor or something? the reed switch is for the ER doctor. sometimes pacemakers go crazy and start shocking a rhythem that maybe shouldnt be shocked. can cause a lot of discomfort if youre getting blammo'd over and over and i imagine its bad for the battery. every ER has a big ring magnet stuck to some metal surface around where patients are usually triaged that can be used to turn off a hyperactive pacemaker.
anyways, never even heard of a lithium iodine battery. very cool video. have a good one!
I would not be surprised if those chips were space qualified; Solid State Scientific was very much into these types of chips.
sure they are...
Another great video mike!
My father worked at Intermedics Freeport starting in the early 80s. He worked with some of the people who developed that one. I believe these could be programmed, in some extremely limited fashion, like target resting heart rate, once it was implanted.
I still have no idea what you're doing but it's soothing and fun to watch
agreed.
That magnetic field switch is used to actually turn the pacemaker on and off. If there is a malfunction of the device a donut shaped magnet can be placed over the unit to deactivate it. Or at least with modern ones that is the case.
Brilliant video mike! Didn't set off an alarm this time either!
This kind of stuff makes me love the internet!
I have the same model in my "little" pacemaker collection ! thanks for the teardown !
msylvain59 why the fuck would you collect those !!! Theyve been inside someone!! and even if they are brand new its still gross
wow beautiful device even just on the outside!
Looks really well shielded. I suppose it would have to be through, walking past a taxi rank and they key the mic, then yer ticker stops...lol. I didn't realise surface mount was in use back in early 70s. The plated through board looks a bit DIY though.
Amazing technology for 36 years ago! I didn't know that laser trimming was done at that time. Do you think that the programming was simply changing the state of flip-flops? I suppose EPROM was around then (not EEPROM) but I didn't see any evidence of it in this device.
hermetic packages are easy to remove, all you need is tweezers (like at 5:52)and sometimes a solvent, if there's glue holding the package or a dremel if the package is soldered together or both, like at 4:40. (in that case, the package was problably welded or glued using epoxy.) unlike epoxy or plastic packages, in that case you will need to dissolve the epoxy or plastic using acids or using a dremel but the dremel is very imprecise so acids are more precise...
-0v or lower means the battery is dead and it only conducts electricity, it does not store any...
Intermedics was a USA company to manufacture pacemakers, the one shown is 1980th products, the company itself was acquired by what is now Boston Scientific, and the trade name ceased to exist, it goes without saying that Cardiac devices of today are much more sophisticated.
I always find the vintage obscure stuff more interesting, but then I do collect vintage computers among other various collections.
Are those PCB's going on the PCB wall?
I've been working on getting you some. One of my dads friends is a cardiac surgeon and I'm sure he could get some for me I just haven't see him lately .
do you ever save the gold? old school stuff has really good gold salvage value
/!\ beep boop detected /!\
PM3 flatpacks, those bring back memories.........
Nice tear down! [EDIT: I thought the coil was a charging circuit, but not the case]
Someone mentioned Solid State Scientific -- their logo was a cube with "S" on each side. I worked for a large analog company fresh out of school, and half the fun was our designers would use "freespace" to hide a little drawing. Goose Egg?
Only bummer to implanted devices, is no more TIG nor Plasma use. Haven't done it, but two years away. Irony is if the Direct Brain Stimulator (DBS) works well, my hands will be stable enough to TIG weld.... uh oh. :)
Hello man who knows the stars :) tell me is it possible with DIY way to build a microwave technigue using device that finds titanium or nuclear battery in friends body ? me and friends are normal arduino builder nerds.
its a long life battery lithium and does not recharge. the coil is used to produce the charge from a very small current - 2.7V @ 10mA to produce 20V & 120V depends on patient. as it only produces this charge very rarely it would last 5 years new models last longer and can be charged through inductance.
Standard CMOS, nice little bifet opamp and those Vishay resistors with the bare die transistors. I could probably ID the transistor, though you will find it is a run of the mill low power NPN or PNP device, typically 100mA 30V process, and Ft of around 250MHz.
Really interesting and not something you often see if ever.
If you grind your discs too quickly, try to use a higher speed of rotary tool, usually when it sparks it lasts longer.
that was cool to see !
How would that Rx coil work inside the metal can?
Is it posible the coil is for wireless charging? If you ever get one of these running I would be very curious to see the output waveform and p-p voltage.
Charging was my thought also
I know later models are wirelessly charged.
Pancakes are perfect for inductive charging. I would think a com ant for close range (near contact) would be much much smaller.
Wireless charging in the late 70s? Lol
Always wonder if a Tesla coil will interfere with these? The standard practice is to warn that they can, but I suspect the RF wont, but perhaps the magnetic field would damage the updating facility. Maybe worth an experiment if you get more.
Thanks Mike!
very good. thank you for sharing.
Cube logo = Q*bert
Lool
Nice things you study ! does a medical companies made nuclear battery radiate ? can i trust my painreducer implant not to radiate ? Battery told to last 15 years.
How does the coil manage to communicate trough the metal can?
The can is not magnetic. There will be some eddy-current losses, but a decent signal will still get through
mikeselectricstuff If the can was made of ferromagnetic metal, then it'll be magnetic, right?
It's a non ferrous case right? Titanium or more likely a steel???
Steven King Steel IS ferrous metal
mikeselectricstuff Thats an awfully big coil for communications. Looks almost like an inductive charging coil to me. Of course.. then you mentioned it was from the late 70's lol
Where the hell do you find such interesting devices?
do you have a nuclear one?
OK, but where is film from removing pacemaker from body?
The mini shears to cut off the tops of the ICs are interesting. Are the IC packages designed to have the tops removed in this way?
No ICs are designed to have their tops removed. It just happens that ceramic packages are brittle and vulnerable near the lid.
excuse my question. but is it safe touching the internals with bear hands.
Hybrids are soooo pretty
Pity you pulled the pacemaker apart. It looks very similar to the early 1970's lithium-iodide powered devices manufactured by Cardiac Pacemakers Inc; which offered longer power-cell life and significantly improved reliability.
alot of gold there too.
WHERE do you find those things?? :)
cemetery
jimbobbyrnes
Lol maybe. But you don't find blood analysing machines or X ray machines in cemeteries :D
That's a lot of titanium if that's what it is! How much did that thing cost you?
I live close to Freeport texas
can you tell me if pacemakers have expensive material used in them, like gold and platinum?
Case is titanium thats it
AHEM,, hmmmmmmm, cough cough, AWEweaha wawweaha.....
first
what are the common parts that fail in a pacemaker?
The leads and where they connect.
thats fucking disgusting if it was taken out of somebody
I recognize the 3 cube logo on the die there but I can't place the name.
+Benjamin “Ozias” Esposti Solid State Scientific.
Chips from around them would've probably been made using ~3-5um processes. Compared to today's~ 14-10nm processes.
Crazy to think about how much smaller that is. Honestly it's just crazy to think something that large, where you can practically see all the traces and parts can do any kind of "logic". I mean I get it, it's just amazing. I love this sort of stuff, but it's beyond what I've learned.
you think that's large, imagine the size and complexity of the earliest analog computers. TTL and 4000 logic was a huge step ahead of the ENIAC days when a comparator took 4 or 5 tubes and a box the size and power consumption of a toaster oven.
The WITCH put Pat's head in the microwave oven. Around and around it went, its eyes rolled up all crazy. It mouthed the words, "lehhhhttttt meeeeeee owwwwwwtttt." And then it POPPED.
It is a shame that hospitals charge so much for them, there must be like $1-2 worth of parts in pacemaker.
plus a ton of paper work, testing, qualifications etc. to make sure it doesn't kill anyone
I think those military grade components cost more than $1-2.
Say you needed a pacemaker because at any moment in your future your heart may just stop. Would you pay for the expensive one, or the pacemaker that's half the price of the first?
Medical devices require a ridiculous amount of R&D, testing ect. This costs a lot for a company, and without some sort of profit, how do you expect them to research and update the technology for future models?
Razor2048 You clearly now how the world works.
Neil Robinson Only if the government buys them.
Hey that's in my dad's chest
THere's a kid in africa needing one of these 70's pacemakers and you are destroying it. As a mixed black eskimo female size plus transwoman, this offends me.
Bad camera framing