From: Andy Christensen (andy@medicalmodeling.com)
Date: Thu Jan 30 2003 - 18:07:59 EET
Hello All,
I agree with Robert Thompson, use epoxy with care. To my knowledge no
epoxy resin material has passed the USP Class VI testing required for
the possibility of in-vivo use. Even with that in place, you would need
to run parts and have them incubated and tested for contaminants in your
specific manufacturing setting. With those numbers in hand you could
run actual sterilization tests to determine if specific types of
sterilization (steam, gas, irradiation) and their parameters that would
provide the sterility assurance needed.
In SLA the only material known to be used in this way is Stereocol, now
made by Vantico. There are materials for SLS and FDM that are also USP
Class VI, just so you know.
Kind regards,
Andy
-----Original Message-----
From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On
Behalf Of Solid Concepts
Sent: Wednesday, January 29, 2003 11:54 PM
To: rp-ml@rapid.lpt.fi
Subject: Re: Sterilisation of SLA components
Hi all,
We do quite a few SLA models for hospitals here in Perth and have been
told that the epoxy resin is ideal for surgical environment, the reason
is, you sterilise it by placing the part in an Ultraviolet apparatus.
Ultraviolet is an excellent steriliser. Kind regards
Francois Primon
Solid Concepts Pty Ltd
www.solid-concepts.com.au
----- Original Message -----
From: "Robert Thompson" <anatomics@anatomics.net>
To: <rp-ml@rapid.lpt.fi>; <esskc@warwick.ac.uk>
Sent: Thursday, January 30, 2003 1:16 PM
Subject: Re: Sterilisation of SLA components
> Greg/List,
> be very careful before using epoxy material in the surgical
> environment.
It
> was not designed for this and I would not recommend it. StereoCol
> however can be sterilised not only by ETO gas, but also by autoclave
> steam (can
warp
> fine features and effect surface finish), peroxide plasma (Sterrad),
> gamma radiation, and betadine liquid soak.
>
> Kind regards,
> Robert Thompson
> Biomodelling Manager
> Anatomics Pty. Ltd.
> www.anatomics.net
>
>
> ----- Original Message -----
> From: <esskc@warwick.ac.uk>
> To: <rp-ml@rapid.lpt.fi>
> Sent: Thursday, January 30, 2003 1:44 AM
> Subject: Sterilisation of SLA components
>
>
> > Dear List,
> > Does anyone know if SLA epoxy resin can be sterilised for medical
> applications?
> >
> > Best regards
> > Greg
> > Dr Greg Gibbons
> > Research Manager
> > Rapid Prototyping and Tooling
> > Warwick Manufacturing Group
> > 024 7652 2524
> >
> >
>
>
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