FW: Medical Resins

From: Popat Ajay AH (ajay.popat@hexagon.zeneca.com)
Date: Thu Jan 14 1999 - 11:16:50 EET

This message bounced back!!!

> ----------
> From: Popat Ajay AH
> Sent: 12 January 1999 10:28
> To: 'igibson@hkucc.hku.hk'
> Cc: 'rp-ml@bart.lpt.fi'; McAloon Kevin KT
> Subject: Medical Resins
> Importance: High
> Dear Ian,
> Happy new year !!
> I have not been part of the rp-ml until last week and was informed of your
> question by one of our customer of the information that you required. Just
> last week I have managed to be part of this big rp-ml family.
> Zeneca Stereocol Medical Resins are specifically develope for the many
> applications in the medical area. These resins are used with
> Stereolithography machines (He-Cd, Ar ion or YAG based systems) and
> currently used by a number of companies worldwide. The models produced
> using the tranparent clear resin or transparent selectively colourable
> resins can be sterilised using most common techniques without the loss of
> properties. These includes; Ethylene Oxide (EO) at 55C, Low temperature
> Steam, Formaldehyde at 80C, Gamma Radiation, CO2 to name a few techniques
> which were tried on models produced using Zeneca Stereolithograpgy Resins
> by hospital in UK, Belgium and USA. In additions these resins have low
> toxicity in liquid form for the user's handling purpose but most
> importantly were the first resin to be FDA 23, USP class VI registered.
> These resins are acrylic resins and therefore it is fast, accuracy
> (scanner limited) and has mechanical stabillity for the post processing
> such as cutting, drilling,etc for operation preplanning.
> My company Zeneca Specialties (BIOMEDICAL COMPANY) has been involved in
> SL resin development since early 1991 and myself has been part of
> development of special medical resin for the European Union Project
> Phidias since 1993. As the main medical resin supplier we are part of
> medical Intelligent Manufacturing System (Worldwide) and Phidias Thematic
> Network (a 4 years EU) initiatives to help medical community with medical
> modelling.
> I personally do not have any experience of FDM and SLS, process and
> material to comment at this stage.
> Please let me know if you need further information on any aspect of resin
> technology for medical applications. I have contributed summary article on
> Rapid Prototyping and medical modelling in the December edition of EU
> Phidias Network newsletter and if you are interested in more details let
> me know and I can post this Newsletter to you.
> Best Regards,
> Ajay
> A H Popat
> Stereocol Resins
> "Taking 3D Modelling in to another dimension"
> Zeneca Specialties
> Tel. +44 161 721 2962
> Fax. +44 161 721 1654
> Please note my new address is : Zeneca Specialties, PO Box 42, Hexagon
> Tower, Blackley, Manchester M9 8ZS UK
> Dear rp-ml
> I have a question regarding the use of RP for biomodelling. Some of the
> materials for use in RP machines can be sterilised to certified levels so
> that models can be taken into operating theatres. However, I understand
> that these models can only be sterilised using gamma rays. Is this true,
> or
> can models be sterilised using other (and if so, what other) methods?
> Also, SLS models have a granular surface. Are there any problems
> associated
> with using the medical grade SLS material in terms of finishing (coatings)
> and particulate contamination?
> Regards
> IG
> Dr. Ian Gibson
> Associate Professor
> Department of Mechanical Engineering
> The University of Hong Kong
> tel: (852) 28597901
> fax: (852) 28585415
> igibson@hkucc.hku.hk
> Still crazy after all these years - Paul Simon
> For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/

For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/

This archive was generated by hypermail 2.1.2 : Tue Jun 05 2001 - 22:50:45 EEST