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veltman
1 Posts |
 Posted - 07/14/2007 : 18:46:34
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| Which rheostat should be connected to a 25W soldering iron to maintain 106 to 108 degrees F? |
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dan
611 Posts |
Posted - 07/15/2007 : 01:07:17
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I'm not sure what you have in mind. I assume you are thinking of holding a modified soldering iron on a skin cancer to overheat it. The basis for hyperthermia treatments is that cancer cells have a slightly lower maximum temperature they can withstand than normal cells, something like a 43C (109.4F), but it could be lower. Heating the cancer cells just at that temperature for about an hour potentially kills them without severely harming the normal cells around them.
To maintain a temperature of within 1 degree of target would require a closed loop. That is, you would need a separate temperature sensing circuit that controls the heat source. Also, the thermal mass of a soldering tip is quite small, so holding that temperature range would be difficult even with a closed loop. And then there are different loading conditions (off skin, on skin) to consider.
I was thinking that an aquarium with a heater could be used for extremities such as a hand. The heater would probably have to be modified to get to 43C. I have seen some that go to 40C.
veltman, it is an interesting thought and a nice change of pace from the other treatment methods. |
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Allen
5 Posts |
Posted - 01/08/2014 : 13:59:09
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Wondering that myself. Any info or experience is welcome.
I was thinking of trying on Actinic Keratosis on back of hands using a Paraffin bath. Looks like they use 107-111 degrees F for cancer treatment. The hot wax units run 125°F to 134°F and they are thinking you are going to dip your hands in, coat with wax, then wrap. I'm thinking of something to keep hands in for an hour at 107-111 degrees F
Of course I don't know if 107 for an hour would damage normal skin. I'm not suggesting it and I'm trying to find out more before trying it.
It is done more in Germany from what I can tell. But there is this informative page from a Texas center. They are using microwaves.
"The hyperthermia therapy is administered by the BSD-500, a powerful microwave system that delivers heat energy directly into the cancerous tumor at temperatures between 107-111 degrees Fahrenheit. "
http://www.texasoncology.com/media-center/fact-sheets/hyperthermia-treatment.aspx
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Hyperthermia
