typodupeerror
• Re:About that Surgery (Score:5, Funny)

on Monday November 05, 2012 @09:34PM (#41889073)

I didn't know that Apple made pacemakers...

• Re:About that Surgery (Score:5, Funny)

on Monday November 05, 2012 @09:53PM (#41889233) Homepage

I didn't know that Apple made pacemakers...

Don't be silly. Apple would never allow you to change the battery.

• Re: would never allow you to change the battery. (Score:2)

Yeah, and I bet you the quality of their stitching and surgical magic would be such that you wouldn't even be able to see when the assembly edges were or where they cut you open. Then again, they don't really like modifying things do they? They tell you plan ahead of time to max out the RAM when you buy their iPeedPaadPodd or ultra-thin-airbook, because you won't be able to change the battery or add RAM to it later.

Nah, I guess they wouldn't want to operate on you; they'd rather be the OEM that makes you

• Re: (Score:2)

I didn't know that Apple made pacemakers...

Don't be silly. Apple would never allow you to change the battery.

And neither to develop yourself in a slim shape with rounded corners.

• Disastrous feedback loop possible. (Score:2)

Cool! It can harvest enough energy to at least start the pacemaker signal for the heart cells, but how much standby time would it have in case the heart stops beating for too long? (Remember that rechargeable cells and capacitors slowly decay over time in their charge-keeping ability).

.

It's probably not a "defibrillator" type of heart-restarter in case the heart starts fibrillating: defibrillators require too much power in order to be able to "jump start" the heart. (At least I think that's the kind Che

• Re: (Score:2)

Defibrillators do not 'jump-start' the heart, they defibrillate (i.e. stop fibrillation [wikipedia.org]). This is often rolled into the function of a pacemaker.
• Re: (Score:2)

even so, the amount of power (voltage \times current) required for defibrillation is quite seriously more than the amount of voltage and current required for the basic sino-atrial node pacemaker replacement which only has to start or pace the cardiac electrical cycle when the pacemaker no longer performs adequately.

.

What I questioned was the ability of the piezoelectric energy harvester to cannibalize enough power to be able to do perhaps even one defibrillation attempt. This, of course, depends upon th

• Re: (Score:3)

also, that is why I put the phrase 'jump start' in double quotes as so: "jump start", to indicate that I was making little air-double-quotes around the phrase as I said it, so as to imply "no it's not really jump-starting, it's just resynchronizing the asynchronous non-entrained fibrillation occuring in the myocardiocytes so that once we've jolted them, an entrained signal can propagate in the correct direction and allow the correct temporal propagation of myocardial contractility so as to squeeze the blood
• Train analogy (Score:2)

It's like using the vibrations of passing four locomotive coal trains to charge the battery that drives the signal lights, and it's a very busy track with a lot of passing large trains but without much signalling going on.
Just signals to control traffic, no HUGE battery reserve to run a locomotive starter motor.

So in other words, a pacemaker and not a crashcart defibrilator, and having the constraint that no battery is allowed at all is not reasonable. It could be seen as deliberately adding a constraint
• Re: (Score:3)

I did not "add the constraint that no battery is allowed" (quoting you there). Here's the quote of my GP post (quoting me now): "i don't know the efficiency of the electrochemical battery system that could be used with it,"

.

I specifically mentioned electrochemical battery there, and in my original post I mentioned both using a capacitor and/or a rechargeable battery. So whomever you're complaining about adding that constraint, it certainly wasn't me. I got no problems with ze batteries, okay?

• Re: (Score:2)

You do seem to be looking for kilowatts instead of microwatts though, and a crash cart defibrilator instead of a pacemaker, which can do the same job with a lot more finesse and vastly less current (it's right where it's needed already under the skin and can get the timing right). A constraint of having a battery that could supply what looks like kilowatts from your description is what I was referring to. Early pacemakers were like that but that was probably before both of us were born.
• Re: (Score:2)

Nope, not looking for kilowatts. Look up implanted cardioversion devices, which are implanted pacemakers with defibrillators circuits built in and fibrillation detectors and algorithms built in along with pacing ability.
• Re: (Score:2)

Um, haven't you noticed yet that you are getting things wrong and others know a little bit about the subject? If you followed your advice and looked things up you'd find the power requirements are very low (battery life in years). The big deal here is never having to do anything invasive to replace a battery once the device is fitted.
• Piezoelectric Catch-22 (Score:2)

So when my heart skips a beat, it will actually skip quite a few? Sounds great, screw testing. Wire me up!
• So.. (Score:2)

As long as your heart keeps beating... your heart will keep beating?
• Re:So.. (Score:5, Funny)

on Monday November 05, 2012 @08:34PM (#41888509)
That's right. It comes with a lifetime guarantee.
• The idea is old. (Score:2)

Back in 1989 when I was doing my masters one of my classmates had this as her project. No hardware, just some conceptual studies, literature survey and a project report.

right?
• Maybe (Score:1)

by Anonymous Coward

I don't know if straight pacemakers are all that common. My late wife had a pacemaker that was also a defribulater that gives quite a jolt if the heart tries to stop beating. Even thirty minutes after death that thing was still firing away in her chest.

• Re: (Score:2)

I investigated the issue back in September. IIRC, about 1/3 of all pacemakers in the US include a defibrillator function.

• "infinite-duration" (Score:1)

Sounds kinda optimistic to me.
• Encryption (Score:2)

Will this allow for enough power to encrypt the wireless connection these things have?
• Zombies (Score:2)

Sounds to me like another cog in the wheels of the zombie apocalypse.

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