Abstract: The invention relates to a biocompatible, low-viscosity, radiation-curable formulation for producing medical products, in particular adaptive ear pieces, otoplastic parts, shells or ear parts, by means of PNP methods or stereolithographic methods. Said formulation comprises: a) 15-60 wt. % of a monomeric or oligomeric dimethacrylate based on bisphenol A or bisphenol F; b) 0-50 wt. % one or more monomeric or oligomeric urethane (meth)acrylates with a functionality n<4, a viscosity <30 Pa s and a molecular weight <3500; c) 2-25 wt. % of a monomeric, aliphatic or cycloaliphatic dimethacrylate with a viscosity <3 Pa s; d) 2-35 wt. % of an iminooxadiazone dion derivative, characterised by 3 methacrylate and/or acrylate functions; 0-15 wt. % one or more monofunctional methacrylates; f) 0.5-6 wt. % of a photo initiator or a combination of photo initiators, whose absorption lies in the wavelength range of the laser beam that is used or the irradiation source; g) 0-0.5 wt.
Type:
Grant
Filed:
October 13, 2005
Date of Patent:
July 27, 2010
Assignee:
Dreve-Otoplastik GmbH
Inventors:
Martin Klare, Reiner Altman, Michael Kutschinski, Thomas Veit
Abstract: A two-component addition-crosslinking silicone comprises (a) 0.1-70% by weight polyorganosiloxanes containing at least two unsaturated groups in the molecule; (b) 0.1-15% by weight polyorganohydrogensiloxanes containing at least two SiH groups in the molecule; (c) 0.01-2.0% by weight noble metal catalyst; and (d) 0.1-5% by weight of a non-toxic antimicrobial additive or a combination of at least two non-toxic antimicrobial additives.
Type:
Grant
Filed:
October 16, 2006
Date of Patent:
May 18, 2010
Assignee:
Dreve-Otoplastik GmbH
Inventors:
Thomas Veit, Martin Klare, Michael Kutschinski, Reiner Altmann
Abstract: The invention relates to a biocompatible, low-viscosity, radiation-curable formulation for producing medical products, in particular adaptive ear pieces, otoplastic parts, shells or ear parts, by means of PNP methods or stereolithographic methods. Said formulation comprises: a) 15-60 wt. % of a monomeric or oligomeric dimethacrylate based on bisphenol A or bisphenol F; b) 0-50 wt. % one or more monomeric or oligomeric urethane (meth)acrylates with a functionality n<4, a viscosity <30 Pa s and a molecular weight <3500; c) 2-25 wt. % of a monomeric, aliphatic or cycloaliphatic dimethacrylate with a viscosity <3 Pa s; d) 2-35 wt. % of an iminooxadiazone dion derivative, characterised by 3 methacrylate and/or acrylate functions; 0-15 wt. % one or more monofunctional methacrylates; f) 0.5-6 wt. % of a photo initiator or a combination of photo initiators, whose absorption lies in the wavelength range of the laser beam that is used or the irradiation source; g) 0-0.5 wt.
Type:
Application
Filed:
October 13, 2005
Publication date:
November 20, 2008
Applicant:
DREVE OTOPLASTIK GMBH
Inventors:
Martin Klare, Reiner Altman, Michael Kutschinski, Thomas Veit
Abstract: The invention relates to a biocompatible, low-viscous, radiation curable formulation, particularly for use in stereolithography, for use in medical technology, in particular, for producing earpieces, containing: a) 55-95% by weight of a monomeric or oligomeric dimethacrylate based on bisphenol A or bisphenol F; b) 0-20% by weight of a urethane methacrylate having a functionality of n<4 and a viscosity<15 Pa s; c) 2-15% by weight of a monomeric aliphatic or cycloaliphatic dimethacrylate having a viscosity<5 Pa s; d) 0-15% by weight of a monofunctional methacrylate having a viscosity<3 Pa s; e) 0.5-6% by weight of a photoinitiator or a combination of a number of photoinitiators whose absorption is located within the wavelength range of the laser beam used; f) 0.
Type:
Grant
Filed:
June 17, 2004
Date of Patent:
June 19, 2007
Assignee:
Dreve-Otoplastik GmbH
Inventors:
Martin Klare, Reiner Altmann, Michael Kutschinski, Georgia Meissner, Thomas Veit
Abstract: A pasty mass such as a mixture of two components of a synthetic resin composition for otoplastic purposes can be displaced from a cartridge by pistons driven by an electric motor within a housing of the device which has a cartridge holder and wherein the pistons are displaced by rotation of a shaft which draws a stainless steel belt and a yoke in the direction of the cartridges to displace the piston rods engaged by that yoke.