Sourcing silicone and using it as a bioproof coating.
edited February 2015 in Coatings, transdermals, other implants
The title sort of says it all, has anyone found any good source of silicone to use on implants? Applied silicone has a $250 1 lb jar of a long-term implant type IIRC, but a pound seems like a lot for our purposes and that is a bit spendy, anybody know a more fitting solution? I've seen some sources indicating that the main difference between temporary implant grade silicone and the long-term stuff is the liability structure of the companies selling them, does anyone have more knowledge of this? I've even heard of peroxide curing silicones working well for implants at grinder definitions of 'well' (which fall short of medical definitions slightly) before platinum curing silicones were widely available.
So, does anyone have any thoughts? What does Steve Hawarth use?
And whether or not it's a good idea to use silicone for coating highly depends on the object to coat, the desired thickness etc. No reason to exclude this option just like that.
as for what its covering i ment electronics, my bad
Like Jack, and Ansamech, i'm trying to figure out an accessible coating or encapsulation... and digging through old threads...
i'm trying to get something i could put an rfid-powered light under the skin. (hypothetically). they are small, less than a fingernail's terrain and just an mm or two thick.
I'm not equipped to build a mould injection kit in my appt, $250 for a pound of silicone sounds a bit much, and am leaning on borosilicate, but am not sure of the grade nor tools to heat and seal it without damaging it, myself, or the chip.
Any tips would be appreciated! (even on where to start looking if i'm not super technical)
What type of cure are you looking for? I've been testing a lot of coatings. Silicones have great biocompatibility but are mechanically weak and very permiable. Whatever you coat in it will basically be wet.
@Cassox sorry slow reply, been working with mcstuff on the electronic parts actually.
I'm looking at a project to make an led that powers by rfid. I know i've been beaten to the punch by Alex already, but my enthousiasm isn't dented yet.
So basically some high shoreA silicone that will be enough to encapsulate some rfid antenna components, some wire potentially, and led.
I've contacted MasterBond but this would be a small order, and i'm not sure they would want to go through with it. Waiting for follow up email from them.
I've also been in contact with Schottel for some glass options. Problem is; don't know size that i want to go with yet, like how big we can go without risking breakage too much, and how to seal.
If it comes down to epoxy, i'm thinking even that could work if cast small and implanted hard.
Optimally i'd love to find a company that sells the damn RFID encapsulation (two sides, like a gelatin pill), but nuuuuuuuuu... spent houuuurs on google.