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eHam Forums => Boat Anchors => Topic started by: N4NYY on March 21, 2014, 01:07:13 PM



Title: AC5UP ?
Post by: N4NYY on March 21, 2014, 01:07:13 PM
Anyone heard from Nelson? He PM'd me saying he was not feeling all that great. He has not posted since March 9. I am concerned.


Title: RE: AC5UP ?
Post by: KD0REQ on March 21, 2014, 03:24:43 PM
PMed listed phone number.


Title: RE: AC5UP ?
Post by: AC5UP on March 21, 2014, 06:27:17 PM
Awwwwwwwww, Vinnie is my concern buddy...........

(http://www.humoretc.com/photohumor2/images/rodney-dangerfield-ts.jpg)

I had an issue, it was fixed, feeling fine, nothing more to say.  To paraphrase Samuel Clements: Your suspicion of my demise is greatly exaggerated.

Don't worry. You're in the will for my collection of Tektronix control knobs. The good kind from the 500 series with brass inserts and set crews. I hope you like dove gray, it's such a warm and vibrant color.


Title: RE: AC5UP ?
Post by: N4NYY on March 22, 2014, 05:19:29 AM
Awwwwwwwww, Vinnie is my concern buddy...........

(http://www.humoretc.com/photohumor2/images/rodney-dangerfield-ts.jpg)

I had an issue, it was fixed, feeling fine, nothing more to say.  To paraphrase Samuel Clements: Your suspicion of my demise is greatly exaggerated.

Don't worry. You're in the will for my collection of Tektronix control knobs. The good kind from the 500 series with brass inserts and set crews. I hope you like dove gray, it's such a warm and vibrant color.

:)


Title: RE: AC5UP ?
Post by: K8AXW on March 22, 2014, 08:47:43 AM
5UP:  Glad to hear that your "issue" was fixed.  Since your Tektronics knob collection seems to be "spoken for," I'd like to be in your will for your Heathkit collection.   ::)


Title: RE: AC5UP ?
Post by: AC5UP on March 22, 2014, 04:35:31 PM
Mixed feelings about the story......... On one hand what I thought was going to be a big deal turned out to be a routine procedure with a short healing curve. On the other, the story could have had a much different ending had I waited a few more days. I was very lucky that I went in when I did.

In a nutshell, I've been dragging since maybe last September. No energy, no stamina, tired all the time and retaining way too much water in my legs. Toward January I was seeing discoloration in my legs that told me it was doctor time. Made an appointment on February 13th and after a few tests was told that what I have is very treatable and starts with a pacemaker that goes in muy pronto. The call was in with the ER across the parking lot and they were waiting for me. About 2 1/2 hours later I was coming out of the anesthesia and my toes were pink again. Total plug & play with off the shelf parts. I went from 35 beats per minute back to 60 and was later told that I was within a few days of a 911 event. Doc still can't figure how I was able to walk in for the appointment. Congestive heart failure with the top & bottom sections no longer in synch. All I needed was the basic two wire pacemaker to keep the moving parts in time and that was fine by me. I figure the simpler the better in terms of service life and reliability.

So far the pacemaker works like champ. Fast reversal of all symptoms with no evidence of any permanent damage. Even the scar is well on its way toward disappearing. Apparently the plumbing is still good, just needed to dance to the beat of a different drummer.


Title: RE: AC5UP ?
Post by: KD0REQ on March 22, 2014, 06:17:26 PM
always good news.  I've got half a battleship of stents in me and I'm chugging right along.  that's almost a drive-in by now... "open the door, stick your right leg out, turn your head and cough, pay at the second window." costs a lot more than a Big Mac, but stays with you longer.


Title: RE: AC5UP ?
Post by: K8AXW on March 22, 2014, 06:22:28 PM
5UP:  Hey man....glad you knew when to fold 'em.  My wife had congestive heart failure a couple times....which is scary.... finally had to get a pacemaker because of A-fib.  She just had her first one replaced after 8 years of service.

From what I understand the biggest problem is dealing with the psychological aspects of having a pacer.  Let me assure you, it's not only "plug n' play" but it's also P n' P and Forget It!  If and when you research these things, you'll find that they're amazing.

Thanks for the SitRep.

GL





Title: RE: AC5UP ?
Post by: G3RZP on March 23, 2014, 11:18:33 AM
Nelson,

Did you get one with a transceiver inside? A lot of them do have that now for remote reading and ease of programming - most work in the 402 - 405 MHz band.

Anyway, glad you're 'firing on all cylinders' now.

vy 73


Peter G3RZP


Title: RE: AC5UP ?
Post by: AC5UP on March 23, 2014, 03:56:08 PM
Did you get one with a transceiver inside?

Absolutely......... Day after I got it a nice lady showed up with a laptop and Linksys wireless hub to have a little chat with the device. I've had three diagnostics so far and part of the deal is a home terminal that plugs into a standard phone line. Keep it near my bed, at night the terminal downloads recent data from the device and forwards it to a toll free number. I'm told if an adjustment is needed the terminal can upload and execute the new settings auto-magically. If all goes as intended this is way cool, not so cool if it needs a Ctl-Alt-Del 'cuz there is no keyboard. I've met a few people with experience and so far it has all been positive. The whole idea of the constant monitoring is to avoid any surprises and extend the battery life by running the lowest reliable pulse voltage / current.

The only snooping I've done so far is to hold an AM radio next to it and listen for CPU hash...... Stone cold quiet.  Now I'm thinking I should give my freq counter a hug to see if I'm throwing a carrier.


Title: RE: AC5UP ?
Post by: K8AXW on March 23, 2014, 07:37:40 PM
Or you could fire up your linear and see if it causes you to flop around on the floor like a fish.......



Title: RE: AC5UP ?
Post by: G3RZP on March 23, 2014, 10:11:26 PM
If it's a St Jude or a Medtronics, I was involved with the transceiver design  before I retired......I chaired the European standards committee on Wireless  Medical Applications, too, writing standards for them.

Pacemakers themselves are required to be immune to 10V/m, and the radio to 3 V/m above 80 MHz. Below 80 MHz, to an induced current of 30mA, so you'll need a darn big amplifier to upset it!

It's a pity that Heathkit didn't produce one.....

73

Peter G3RZP


Title: RE: AC5UP ?
Post by: K8AXW on March 24, 2014, 07:24:00 AM
Peter:  Where was you when I was asking questions about my wife's newly acquired pacemaker?  I researched the RF immunity thing until it simply wore me out.  Trying to get information like this from the manufacturer was another exercise in futility.

However, 9 years after the fact I now have this info and will file it.  Many thanks.

I agree that it would have been great for Heathkit to have made a pacemaker.  Can you imagine Nelson's angst when he woke up and found that he had a Heathshit pacemaker installed?   LOLROFLMAO!!!

Sorry Nelson.... it really isn't a funny subject but if pacemaker use wasn't so commonplace and dependable these days this thread wouldn't have taken this turn. 

I had a hellova time convincing my wife she was going to be OK and that there wasn't any need for doom and gloom.



Title: RE: AC5UP ?
Post by: KD0REQ on March 24, 2014, 01:14:55 PM
I would think the green paint on a Heath pacemaker would be an issue.

not to mention the ElMenco tubes...


Title: RE: AC5UP ?
Post by: K8AXW on March 24, 2014, 08:08:29 PM
Well, green paint or no..... the great thing would be he could service it himself....assuming he had the assembly manual.  If not he could always download it.


Title: RE: AC5UP ?
Post by: G3RZP on March 25, 2014, 09:28:36 AM
The problem in building one from a kit would be doing the electron beam welding of the titanium case after assembly and test.....

The EMC requirements are in a set of ISO standards: in Europe, they become ENs (for European Norm), and EN60601 is one of the applicable ones. The radios themselves have much simpler EMC requirements.


Title: RE: AC5UP ?
Post by: K8AXW on March 25, 2014, 08:40:13 PM
 ::)  I think there would be more than one problem building one from a kit Peter.  Those who have been forced to undergo this procedure are very fortunate to have the technology that we presently have.

My wife goes to her cardiologist every 6 months and they download how the pacer and her symptoms have been doing during this period.  The whole thing is nothing but mind blowing!



Title: RE: AC5UP ?
Post by: G3RZP on March 26, 2014, 02:02:34 AM
The first pacemaker - a bit over 50 years ago - was made with discrete components and potted in epoxy resin using a shoe polish tin as a mould! It failed after 24 hours, but they had a spare. The recipient got through several pacemakers in the next 40+ years before he died of old age...


Title: RE: AC5UP ?
Post by: K8AXW on March 26, 2014, 07:13:40 AM
That sounds like the first man-made heart.  Very similar results.

I wish I had kept the cartoon of a man in a hospital bed with a huge 'grandfather clock" key sticking out of his chest.  The Cardiologist is telling him that "is all his health care plan would pay for."

Even though pacer technology had improved by leaps and bounds the manufacturers are still reluctant to provide RF interference guidelines for people like us....hams running linears.  The damn lawyers has everyone cowering behind a rock.


Title: RE: AC5UP ?
Post by: KD0REQ on March 26, 2014, 07:28:06 AM
the myriad problems with pacer leads breaking, shedding insulation, and working their way out of the heart are why we have more lawyers per square mile in the Twin Cities (home of the big 3 pacemaker companies and birthplace at the U of M of the technology) than any place outside downtown Boston or New York.

they may have regular poker sessions at which they trade cases over the table, but I jest.

(no, I don't.)

anyway, first time you try loading the eagle roaster into a long wire, have somebody in the shack just in case.  if that turns out OK, stop worrying.

and the leadless generation of pacers has just gotten on the market, so retraining grants for lawyers who need to learn how to do real work are probably coming around real soon now.


Title: RE: AC5UP ?
Post by: G3RZP on March 26, 2014, 07:46:42 AM
The interesting thing is that the manufacturers won't say what their EMC specs are, but it's laid down  in international standards the levels they have to meet. Having said which, I know one of the big manufacturers has been talking internally of requiring their product to be immune to a level which would exceed the ICNIRP safety level for the user.

As KD0REQ says, the problem is the lawyers, closely followed as a problem by the politicians.


Title: RE: AC5UP ?
Post by: KB2WIG on March 26, 2014, 10:22:16 AM

Are all the pacemakers guaranteed for life?


klc


Title: RE: AC5UP ?
Post by: AC5UP on March 26, 2014, 05:10:31 PM
That's the warranty on the heart they're connected to.

All I know is that I made it past the first month without doing something stupid enough to pull out a wire so there's a fair chance they're mostly anchored. The past two days I've been lifting and loading bags of soil amendments in anticipation of re-doing the front yard landscaping and it's AMAZING how much more strength & stamina I have. I know I shouldn't push too hard too fast, but sloth won't do me much good as a long term health care strategy and at least congestive heart failure isn't 100% fatal like old age. Then I realize....... Tick, tock, procrastination is not my friend.

BTW: You folks do understand the Heathshkit jokes just encourage a one-up, but there is the possibility if I ever decide to home-brew a pacer I'd go the Gilligan's Island route like The Professor would. Hollow out a shark tooth then develop the first coconut-ion battery pack. Sure, an Altoids tin would be the better choice, but who wants an armpit with a fragrance that's curiously strong?

Note to G3RZP:  I got the St. Jude flavor.  Wanted the Richard B Cheney pure evil autographed model but they're currently fetching premium prices in Southern Russia.   :P


Title: RE: AC5UP ?
Post by: K8AXW on March 26, 2014, 05:59:18 PM
Nelson:  Good to hear that you're doing so well and feeling so much better.  It's also good to see that you've maintained your sense of humor.  Of course you're right about the Heathkit jokes..... 



Title: RE: AC5UP ?
Post by: KD0REQ on March 26, 2014, 06:27:51 PM
I believe warranties are on the order of battery life, which these days is about 10 years on some models, 5 on others, with stern notice that you need to see your interventionist regularly to check on function.

a "lifetime" warranty... to the user... probably means squat. re: lifetime-lubricated motors...


Title: RE: AC5UP ?
Post by: AC5UP on March 26, 2014, 07:23:03 PM
A few years back one of my neighbors re-landscaped their side yard into something they called " Virtual New Jersey ".........

It was quite imaginative. Cost a fortune in Dioxin alone, but I think it was worth it. Only yard in the neighborhood where if the dog took a dump it improved the appearance.

I'm thinking about my own " Virtual Benton Harbor ". You know, a special place where if the dog takes a dump I can paint it green and sell it at a Ham Fest.    ;D



Title: RE: AC5UP ?
Post by: G3RZP on March 27, 2014, 12:03:36 AM
Provided you don't get lead problems, the life is an average of ten years before the battery runs down. But if there is a low demand on the battery, it can be as long as 20 years, although that is very rare, and it can be down at 5 years - again, that is very rare. Devices with a defibrillator can last a very long time if the defibrillating function doesn't get used - they have quite big batteries for an inverter to charge a capacitor up to anything between 600 and 1200 volts. The SJM devices use a 'wake up' transmission in the 2.4GHz band, and that was designed to work under the ETSI standard EN300 328 for Wide Band Wireless Data Transmission (WLAN), the original version of which I worked on in 1993. The latest version of that standard tightened up considerably on the spectrum access methods and I had to work quite hard at ETSI to get an exception made for SJM pacemakers to have reverse compatibility right out past 2024 because of the chance of such a thing happening.

The 402 - 405 MHz rx in your pacemaker, Nelson,  is a low IF image rejecting rx using a chip from Zarlink, which is now Microsemi. I spent a lot of time going to Sweden in the first few years of this century working on the systems design of it - detailed circuit design was done in Jarfalla, just north of Stockholm, and also in Zelinograd, outside Moscow, by a sub-contract design house. The SJM group we were working with were also in Jarfalla (actually it is Veddesta, but the commune is Jarfalla) - they were shut down a couple of years ago. The Zarlink facility there  shut down shortly after, and it pulled back to San Diego: the senior management there has left, too. I was 'lent' to Zarlink's medical products group for 3 days in 2002, which turned into eleven and a half years...

One interesting point about pacemakers is a demonstration of the total idiocy of EU bureaucracy. They wanted all radio equipment to be capable of being placed in a 'test mode' so that compliance to the various Directives could be measured. Because of 'commercial security',  details of how this could be done would be kept on a 'secure' (sic!) website accessible by the enforcement authorities of the 27 EU countries.........When it was pointed out that doing so would mean that anyone with a pacemaker could have it maliciously  turned on into 'test mode' and left there for the battery to run down, they said that was not their concern.......



Title: RE: AC5UP ?
Post by: G4FUT on April 13, 2014, 08:30:37 AM
5UP, Internal transmitter in 400MHz range.. EH?  I wonder of you can set off the car alarms as you walk past !
Seriously, glad you're back and in fine fettle, though I know the initial knowledge of the problem can come as quite a shock to you.


Title: RE: AC5UP ?
Post by: K8AXW on April 14, 2014, 08:07:46 AM

Quote
I wish I had kept the cartoon of a man in a hospital bed with a huge 'grandfather clock" key sticking out of his chest.  The Cardiologist is telling him that "is all his health care plan would pay for."

Whups!  Wrong caption quote:  Did find the cartoon though. 



                                      (http://i1171.photobucket.com/albums/r553/KarlAibling/eHam/WindUpPacemaker.gif)


Title: RE: AC5UP ?
Post by: AC5UP on April 14, 2014, 04:53:44 PM
Laugh all you want, but the truth is I wanted a steam powered pacer.

More than just heartbeat regulation, the steam pacemaker removes unsightly age wrinkles too!


Title: RE: AC5UP ?
Post by: KD0REQ on April 14, 2014, 05:18:57 PM
comfy in the cold, nasty in the heat.  and you're going to look silly pouring kerosene in your pocket.


Title: RE: AC5UP ?
Post by: G3RZP on April 14, 2014, 11:44:06 PM
 there's also technical problems with lubrication affecting the exhaust steam and so fouling the heating surfaces.

On a more serious note, there have been proposals for powering medical implants from tiny turbo-generators inserted in an artery.......while instantaneous blood pressure is measured with a passive system around 35 MHz.


Title: RE: AC5UP ?
Post by: K8AXW on April 15, 2014, 06:36:28 AM
Quote
On a more serious note, there have been proposals for powering medical implants from tiny turbo-generators inserted in an artery.......while instantaneous blood pressure is measured with a passive system around 35 MHz.

Peter:

I guess the next thing is wind turbines implanted in the arse!   ::)


Title: RE: AC5UP ?
Post by: KD0REQ on April 15, 2014, 09:28:45 AM
I suspect serious bearing problems from corrosion would make them useless in a short time.

perpetual motion, aka conservation of energy: methane gas stove attached to a derriere line, cooking beans.

thank you, thank you all, I'll be here for 5 to life.  tip your server, not the cows, they're too heavy....