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teone
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Join Date: Dec 2012
Posts: 12

PCB Sterilization

12/21/2012 4:24 AM

Hi! I am developping some pcb that will be deposed inside an incubator strictly in contact with living cells. My aim is to sterilizie these pcb : the material is fr4 and ,being an analogic device, is composed by resistance,capacities , operational amplifiers, connectors and gold pins. I find out

http://www.eetimes.com/design/medical-design/4217655/Sterilization-methods-and-impact-on-electronics-in-medical-devices-

that the best method for sterilize is Chlorine Dioxide (CD) Gas Sterilization.

What's your opinion ? Can it damage pcb ?

THX
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PWSlack
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#1

Re: pcb sterilization

12/21/2012 4:39 AM

Wouldn't it also kill off those living cells in the incubator with which the pcb was in contact?

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teone
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#2

Re: pcb sterilization

12/21/2012 4:58 AM

but first I sterilize pcb and then, after a period that CD volatilize, I'll put PCB inside incubator with growing cells
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PWSlack
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#4
In reply to #2

Re: pcb sterilization

12/21/2012 5:22 AM

It won't be sterile then, will it?

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teone
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#5
In reply to #4

Re: pcb sterilization

12/21/2012 5:25 AM

yes.. why not ? the incubator is already sterilized so if i sterilize also pcb and put them inside it , will be all ok.
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PWSlack
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#6
In reply to #5

Re: pcb sterilization

12/21/2012 6:52 AM

Wouldn't sterilisation kill off all the cells?

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JPool
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#3

Re: pcb sterilization

12/21/2012 5:15 AM

Try this link, it has a few methods for sterilization of pcb's. :

http://www.eetimes.com/design/medical-design/4217655/Sterilization-methods-and-impact-on-electronics-in-medical-devices-

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JPool
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#7
In reply to #3

Re: pcb sterilization

12/21/2012 7:18 AM

Looks like Chlorine Dioxide is your best choice.

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Joshi
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#8
In reply to #7

Re: pcb sterilization

12/21/2012 7:55 AM

Chlorine Dioxide is a disinfectant. It is likely to affect living cells.
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JPool
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#9
In reply to #3

Re: pcb sterilization

12/21/2012 8:00 AM

Damn, sorry, didn't realize you already had this link posted in your original post. Unobservant, must of been too worried about the End of the World.

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redfred
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#10

Re: PCB Sterilization

12/21/2012 9:00 AM

I do not understand the need for your PCB to be inside the sterile space as your growth chamber. I would use a bake-able vacuum grade connector through the incubator wall and mount the PCB outside of the sterile chamber. Now sterilizing the chamber can be done by virtually any method.

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leveles
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#11

Re: PCB Sterilization

12/21/2012 10:53 PM

You thinking wrong about the problem. Do it clean, and CLEAN it big time. Then encapsulate it, and go thru the whole cleaning rigamarole, again.

THEN, you have an inert blob, clean, doing what you desire.

I did not invent it. Pacemeakers, and satellites both make use of the techniques. Basics agree, detail procedures may differ.
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teone
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Join Date: Dec 2012
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#12
In reply to #11

Re: PCB Sterilization

01/07/2013 4:31 AM

yes. But how to clean it ?
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dealer88
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Join Date: Jan 2013
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#13

Re: PCB Sterilization

01/09/2013 7:18 AM

I also want to know how we can clean it?

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dealer88 (1); Joshi (1); JPool (3); leveles (1); PWSlack (3); redfred (1); teone (3)

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