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    CERAMIC BODY AND PROCESS FOR THE PREPARATION THEREOF
    5.
    发明申请
    CERAMIC BODY AND PROCESS FOR THE PREPARATION THEREOF 有权
    陶瓷体及其制备方法

    公开(公告)号：US20100178636A1

    公开(公告)日：2010-07-15

    申请号：US12667755

    申请日：2008-07-07

    Applicant: Marc Stephan ,  André Schöne

    Inventor： Marc Stephan ,  André Schöne

    IPC: A61C13/083 ,  A61C13/00 ,  A61F2/02 ,  A61B17/86

    CPC classification number: C04B41/53 ,  A61L27/105 ,  C04B41/009 ,  C04B41/91 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2111/00836 ,  C04B41/0072 ,  C04B41/5353 ,  C04B41/5361 ,  C04B35/00 ,  C04B35/48

    Abstract: A process for the preparation of ceramic dental implants having a surface for improving osseointegration, wherein the following process steps are performed for preparing such surface: —preparation of a ceramic blank having a surface; —treating at least one partial area of the surface of the ceramic blank by an ablating process that produces a surface roughness of the surface that corresponds to a treatment by sand blasting under a blasting pressure of from 1.5 bar to 8 bar and with a grain size of the blasting media used for sand blasting of from 30 μm to 250 μm; —followed by a chemical treatment of said at least one partial area of the surface of the ceramic blank treated with the ablating process; —followed by a thermal treatment of the blank whose surface has been subjected to said ablating and chemical treatments at temperatures of >125° C. > A ceramic body obtainable by the process according to the invention is also described.

    Abstract translation: 一种用于制备具有用于改善骨整合的表面的陶瓷牙植入物的方法，其中进行以下工艺步骤以制备这种表面： - 制备具有表面的陶瓷坯料; 通过烧蚀过程来制造陶瓷坯料的表面的至少一个部分区域，该烧蚀过程产生对应于在1.5bar至8bar的喷砂压力下通过喷砂处理的表面的表面粗糙度，并且具有晶粒尺寸 用于喷砂的喷砂介质为30μm至250μm; - 随后通过化学处理用烧蚀过程处理的陶瓷坯料的表面的所述至少一个部分区域; 随后通过在> 125℃的温度下对其表面进行了所述烧蚀和化学处理的坯料进行热处理。还描述了可通过本发明的方法获得的陶瓷体。

    Fabrication of biomedical implants using direct metal deposition
    10.
    发明申请
    Fabrication of biomedical implants using direct metal deposition 审中-公开
    使用直接金属沉积制造生物医学植入物

    公开(公告)号：US20020082741A1

    公开(公告)日：2002-06-27

    申请号：US09916976

    申请日：2001-07-27

    Inventor： Jyoti Mazumder ,  Dwight Morgan ,  Timothy W. Skszek

    IPC: G06F019/00

    CPC classification number: C23C4/185 ,  A61F2/30767 ,  A61F2/3094 ,  A61F2/30942 ,  A61F2/32 ,  A61F2/34 ,  A61F2/36 ,  A61F2/3662 ,  A61F2002/30004 ,  A61F2002/3067 ,  A61F2002/3095 ,  A61F2002/30952 ,  A61F2002/3097 ,  A61F2002/3611 ,  A61F2002/4631 ,  A61F2250/0002 ,  A61F2250/0014 ,  A61F2310/00017 ,  A61F2310/00023 ,  A61F2310/00029 ,  A61F2310/00604 ,  A61F2310/00634 ,  A61L27/04 ,  A61L27/10 ,  A61L27/105 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C23C4/12

    Abstract: Direct metal deposition (DMDtm) is used to fabricate customized three-dimensional artificial joint components, thereby leading to enormous savings in terms of labor, cost and lead-time. The DMD fabrication process is interfaced directly to digital data derived through CAT scans, MRI or X-ray topography. A computer-aided design (CAD) file is then constructed in accordance with the digital data, and a tool path is generated as a function of the CAD file. The desired implant, or a portion thereof (such as just the outer surface) is then be fabricated by depositing material increments along the tool path using direct metal deposition (DMD). The process may be used for both solid and scaffold structure suitable to bone ingrowth or ongrowth. In the preferred mbodiment, a closed-loop DMD process is used wherein the size of the increments are controlled through optical monitoring. The materials forming the implant may include one or more metals, polymers, or ceramics, including zirconia or alumina. The same DMD process may also be used to fabricate the implant out of different materials, inlcuding a combination metals, ceramics, or polymers. As a further advantage, one or more sensors may be embedded into the implant during fabrication for diagnostic or data-acquisition purposes.

    Abstract translation: 直接金属沉积（DMDtm）用于制造定制的三维人造关节部件，从而在劳动力，成本和交货时间方面节省了巨大的成本。 DMD制造过程直接与通过CAT扫描，MRI或X射线形貌得到的数字数据进行接口。 然后根据数字数据构建计算机辅助设计（CAD）文件，并且根据CAD文件生成工具路径。 然后通过使用直接金属沉积（DMD）沿工具路径沉积材料增量来制造所需的植入物或其一部分（例如仅仅外表面）。 该方法可用于适于骨向内生长或生长的固体和脚手架结构。 在优选实施例中，使用闭环DMD工艺，其中增量的大小通过光学监控来控制。 形成植入物的材料可以包括一种或多种金属，聚合物或陶瓷，包括氧化锆或氧化铝。 也可以使用相同的DMD工艺来制造不同材料的植入物，包括组合金属，陶瓷或聚合物。 作为另一个优点，在制造期间，一个或多个传感器可以嵌入到植入物中用于诊断或数据采集目的。

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