Title:
【発明の名称】熱分解炭素含有成形体、その製造法および応用
Document Type and Number:
Japanese Patent JPH04503050
Kind Code:
A
Abstract:
Pyrocarbon-containing preform with a low weight, an increased elastic modulus and an excellent surface quality. It is obtained in the following manner: carbon fibres are coked at temperatures between 800 and 1200C; this coked green product is then infiltrated with pyrocarbon up to a density no greater than 70% of the theoretical density at a temperature of approximately 1100C and this product is finally sealed with a layer of pyrocarbon at a temperature comprised between 1300 and 1800C. The present invention also relates to the production of preforms containing such pyrocarbons and to their use as exoprostheses, endoprostheses or ortheses, and in particular as single-flap or multiflap cardiac valve prostheses or as cardiac valve components.
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Inventors:
Gates, Ulrich
Knoch, Martin
Royle, Helmut
Lau, Gunter
Grande, Peter
Knoch, Martin
Royle, Helmut
Lau, Gunter
Grande, Peter
Application Number:
JP50259190A
Publication Date:
June 04, 1992
Filing Date:
January 30, 1990
Export Citation:
Assignee:
B.BRAUN MELSUNGEN AKTIENGESELLSCHAFT
International Classes:
A61L27/00; A61F2/24; A61L27/08; A61L27/30; A61L27/44; C04B35/83; A61F2/00; (IPC1-7): A61L27/00; C04B35/52
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)