Abstract: An overend take-off crosswound bobbin and a method for its production are designed in such a way that the density of the finished crosswound bobbin is increased and the run-off characteristics during further processing are optimized. For this purpose, in one variant parallel windings are introduced at intervals. In another variant, when the bobbin diameter is small the yarn is wound on at a smaller pitch angle than for a larger diameter. Furthermore, a traversing stroke which is reduced by comparison with the bobbin width is displaced along the bobbin width.
Type:
Grant
Filed:
February 25, 2005
Date of Patent:
February 23, 2010
Assignee:
Deutsche Institute fuer Textil- und Faserforschung Stuttgart Stiftung des oeffentlichen Rechts
Inventors:
Gerd Stahlecker, Gernot Schäffler, Christoph Riethmüller
Abstract: The invention relates to a tubular implant, in particular a stent, in the form of a round braid composed of threads of biocompatible material extending in oppositely directed helices and crossing over each other, thread areas located at the tube ends being free from thread ends, and threads present there being guided back into the braid structure.
Type:
Grant
Filed:
October 27, 2004
Date of Patent:
September 1, 2009
Assignee:
Deutsche Institute für Textil-und Faserforschung Stuttgart Stiftung des Oeffentlichen Rechts
Inventors:
Helmut Hierlemann, Maria Baumann, Markus Milwich, Heinrich Planck
Abstract: A biologically resorbable nerve guide rail with a microporous guide tube of polymers of hydroxycarboxylic acids, where the porosity allows a metabolism through the tube wall, but prevents the passage of cells, and optionally several monofilaments of polymers of hydroxycarboxylic acids located in the guide tube, is characterized in that the inner surface of the tube and/or the surface of the monofilaments have an orientation aid for longitudinally oriented colonization with Schwann's cells.
Type:
Grant
Filed:
June 13, 2005
Date of Patent:
April 3, 2007
Assignee:
Deutsche Institute für Textil-und Faserforschung Stuttgart Stiftung des Oeffentlichen Rechts
Inventors:
Erhard Mueller, Helmut Hierlemann, Heinrich Planck, Burkhard Schlosshauer
Abstract: A medical, bioresorbable implant, particularly for cruciate ligament augmentation, is constructed as a composite structure in textile construction from at least two biocompatible polymer materials, which differ in their chemical composition and/or polymer structure and which are degradable, the implant having a predetermined initial tensile stiffness and a different degradation behaviour of the polymers and/or the textile construction is selected in such a way that the tensile stiffness decreases during degradation.
Type:
Grant
Filed:
September 12, 2001
Date of Patent:
August 10, 2004
Assignees:
Deutsche Institute fuer Textil-und Faserforschung Stuttgart
Stiftung des oeffentlichen Rechts
Inventors:
Martin Dauner, Helmut Hierlemann, Heinrich Planck, Lutz Claes, Lutz Duerselen, Anita Ignatius
Abstract: A triblock terpolymer with a structure ABA formed from a biodegradable hard segment A and a biodegradable soft segment B has as the soft segment a statistical terpolymer with a completely amorphous structure. A process for its production comprises chemically reacting the hard segment monomer with hydroxy terminal groups of the soft segment B. The absorbable polymer is suitable for the production of a surgical suture material, which is wholly or partly formed from the polymer.
Type:
Grant
Filed:
October 8, 1997
Date of Patent:
April 11, 2000
Assignee:
Deutsche Institute fuer Textil- und Faserforschung Stuttgart Stiftung des Oeffentlichen Rechts
Inventors:
Sven Oberhoffner, Heinrich - Ing. Planck