Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
DrQuine
User Rank
CEO
Re: Medical Devices Tolerating Cremation or Accidents
DrQuine   9/6/2014 5:51:47 PM
NO RATINGS
@goafrit My comment must have been unclear. The embedded plutonium in a working pacemaker device is perfectly safe for the patient and for the surrounding environment.  The concern was that a severe accident or cremation could breach the container and release free plutonioum into the environment which would be a serious issue.

goafrit
User Rank
Manager
Re: Medical Devices Tolerating Cremation or Accidents
goafrit   9/6/2014 4:43:11 PM
NO RATINGS
>> While the dead patient wouldn't care, the release of plutonium into the environment during cremation was a serious concern.

That is interesting that someone can have that while alive. Then on death, the toxicity level could harm others. This calls for the need to think through materials before they are deployed in products.

DrQuine
User Rank
CEO
Medical Devices Tolerating Cremation or Accidents
DrQuine   7/23/2014 9:49:37 AM
NO RATINGS
Another challenging issue is the need for medical devices to tolerate cremation (or accidents) without releasing toxic materials even after the patient dies. In the instance of plutonium powered heart pacemakers this was a serious issue. While the dead patient wouldn't care, the release of plutonium into the environment during cremation was a serious concern. Physical shielding accounted for a significant portion of the bulk of the device.

resistion
User Rank
CEO
Re: Choice of radiation for sterilization
resistion   7/9/2014 11:02:15 PM
NO RATINGS
Floatiing gate is not radiation hard, it would be used with radiation shields.

goafrit
User Rank
Manager
Re: Choice of radiation for sterilization
goafrit   7/9/2014 8:50:16 PM
NO RATINGS
>>  I have heard of radiation hardened FPGAs being used but do not have much idea about the memory.  

You go with floating gates memory. I have seen that being adopted for most space-focussed memory designs. That can be used here.

goafrit
User Rank
Manager
Re: Choice of radiation for sterilization
goafrit   7/9/2014 8:48:22 PM
NO RATINGS
>>  And that radiation has to be cheaply provided

My experience in the medical device is that the components command good premium compared to the consumer market. So, this can be done. I know for example in MEMS, you can sell a unit of XL for $60 compared with $0.60 you can get in the consumer market.

y_sasaki
User Rank
CEO
MEMS memory?
y_sasaki   7/9/2014 6:19:44 PM
NO RATINGS
I remember I've read article on Scientific American IBM at that time was investigated MEMS memory - essentially atomic-size abacus. I never heard what happend to that technology, probably dead-ended. Sad, if they've kept the development, it could be highly tolerant to radiation memory.

resistion
User Rank
CEO
Re: Choice of radiation for sterilization
resistion   7/9/2014 11:37:13 AM
NO RATINGS
Yes one needs radiation-hard CMOS to control radiation-hard memory. How do the sterilized devices use memory or even CMOS now?

Sanjib.A
User Rank
CEO
Re: Choice of radiation for sterilization
Sanjib.A   7/8/2014 11:38:07 PM
NO RATINGS
@resistion: You have made an excellent point!! If there is a way to control the radiation such that the radiation serves its purpose without damaging the semiconductor while keeping the cost lower than what it would be with the CBRAMs, that should make the case for it. 

Are the CBRAMs equivalent to FLASH functionally? Currently what kind of memory chips being used in space equipments, for which the radiation threats are similar? I have heard of radiation hardened FPGAs being used but do not have much idea about the memory.  

resistion
User Rank
CEO
Choice of radiation for sterilization
resistion   7/8/2014 9:44:46 PM
NO RATINGS
If the purpose is sterilization, you have to choose a radiation that kills the germs without killing the CMOS. And that radiation has to be cheaply provided. Generally the thinner the memory layer the less likely the radiation would deposit damaging energy.



Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Want a Voltera Desktop PCB Printer?
Max Maxfield
9 comments
I just received an email from my chum Javi in Spain. "Have you heard about Voltera (VolteraInc.com)? It's a Canadian company that is going to offer desktop-size PCB printers for fast ...

Aubrey Kagan

Have You Ever Been Blindsided by Your Own Design?
Aubrey Kagan
37 comments
I recently read GCHQ: The uncensored story of Britain's most sensitive intelligence agency by Richard J. Aldrich. The Government Communication Headquarters (GCHQ), Britain's equivalent of ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
2 comments
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
15 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...