公开(公告)号：EP0811199B1

公开(公告)日：2007-12-12

申请号：EP96906442.7

申请日：1996-02-14

申请人： St. Ville, James A.

发明人： St. Ville, James A.

IPC分类号： G06F17/50 ,  G06F19/00 ,  A61F2/30 ,  G05B19/4093

CPC分类号： G05B19/4207 ,  A61F2/30942 ,  A61F2/36 ,  A61F2002/30014 ,  A61F2002/30046 ,  A61F2002/30052 ,  A61F2002/30952 ,  A61F2002/30955 ,  A61F2002/3611 ,  A61F2250/0018 ,  A61F2250/0043 ,  A61F2250/0047 ,  G05B19/4097 ,  G05B2219/35017 ,  G05B2219/45168 ,  G05B2219/49008 ,  G06F17/5018 ,  G06F2217/16 ,  G06F2217/44 ,  Y02P90/265

摘要： A method for manufacturing an object having a potential {x} which is generated in response to a field {f} applied thereto is provided. The method includes the step of designing a geometric model of the object. A computerized mathematical model of the object is generated by discretizing the geometric model of the object into a plurality of finite elements and defining nodes at boundaries of the elements, wherein values of the field {f} and potential {x} are specified at the nodes. A material property matrix [k] is then calculated based on the relationship {f}=[k]{x}. Material property coefficients are then extracted from the material property matrix [k] for each finite element in the computerized mathematical model and the extracted material property coefficients are compared to material property coefficients for known materials to match the extracted material property coefficients to the material property coefficients for known materials. Manufacturing parameters corresponding to the matched material property coefficients are then determined. The object is then manufactured in accordance with the determined manufacturing parameters.

公开(公告)号：EP0811199A4

公开(公告)日：2000-01-26

申请号：EP96906442

申请日：1996-02-14

申请人： ST VILLE JAMES A

发明人： ST VILLE JAMES A

IPC分类号： A01K87/00 ,  A61F2/00 ,  A61F2/30 ,  A61F2/36 ,  A63B49/10 ,  A63B49/12 ,  A63B53/10 ,  B62K19/00 ,  B64F5/00 ,  G05B19/4097 ,  G05B19/42 ,  G06F17/50 ,  G05B19/4093 ,  G06F19/00

CPC分类号： G05B19/4207 ,  A61F2/30942 ,  A61F2/36 ,  A61F2002/30014 ,  A61F2002/30046 ,  A61F2002/30052 ,  A61F2002/30952 ,  A61F2002/30955 ,  A61F2002/3611 ,  A61F2250/0018 ,  A61F2250/0043 ,  A61F2250/0047 ,  G05B19/4097 ,  G05B2219/35017 ,  G05B2219/45168 ,  G05B2219/49008 ,  G06F17/5018 ,  G06F2217/16 ,  G06F2217/44 ,  Y02P90/265

摘要： A method for manufacturing an object having a potential {x} which is generated in response to a field {f} applied thereto is provided. The method includes the step of designing a geometric model of the object. A computerized mathematical model of the object is generated by discretizing the geometric model of the object into a plurality of finite elements and defining nodes at boundaries of the elements, wherein values of the field {f} and potential {x} are specified at the nodes. A material property matrix [k] is then calculated based on the relationship {f}=[k]{x}. Material property coefficients are then extracted from the material property matrix [k] for each finite element in the computerized mathematical model and the extracted material property coefficients are compared to material property coefficients for known materials to match the extracted material property coefficients to the material property coefficients for known materials. Manufacturing parameters corresponding to the matched material property coefficients are then determined. The object is then manufactured in accordance with the determined manufacturing parameters.

公开(公告)号：EP0938279B1

公开(公告)日：2004-03-31

申请号：EP98938572.9

申请日：1998-08-24

申请人： METOXIT AG

发明人： RIEGER, Wolfhart ,  WOLF, Hans ,  FLUCK, Herbert

IPC分类号： A61F2/30 ,  A61L27/00 ,  A61F2/32

CPC分类号： A61F2/32 ,  A61F2/30 ,  A61F2/34 ,  A61F2/3662 ,  A61F2002/30046 ,  A61F2002/30934 ,  A61F2002/3611 ,  A61F2250/0047 ,  A61F2310/00011 ,  A61F2310/00161 ,  A61F2310/00191 ,  A61F2310/00203 ,  A61F2310/00239 ,  A61F2310/00281 ,  A61F2310/00305 ,  A61F2310/00311 ,  A61F2310/00317 ,  A61L27/10

摘要： The invention relates to an endoprosthesis with a joint consisting of a ball and a spherical cap which are constructed from hard ceramic (Al2O3). Said joint is neutral to the body, i.e. biocompatible, and, in principle, offers a high level of comfort to the wearer after implantation as long as the comfort would not be superimposed by a certain susceptibility to breaking of the joint, especially the ball. The invention provides a combination of hard ceramic materials with which the susceptibility to breaking is reduced.

公开(公告)号：EP0811199A1

公开(公告)日：1997-12-10

申请号：EP96906442.0

申请日：1996-02-14

申请人： St. Ville, James A.

发明人： St. Ville, James A.

IPC分类号： A01K87 ,  A61F2 ,  A63B49 ,  A63B53 ,  B62K19 ,  B64F5 ,  G05B19 ,  G06F17 ,  G06F19

CPC分类号： G05B19/4207 ,  A61F2/30942 ,  A61F2/36 ,  A61F2002/30014 ,  A61F2002/30046 ,  A61F2002/30052 ,  A61F2002/30952 ,  A61F2002/30955 ,  A61F2002/3611 ,  A61F2250/0018 ,  A61F2250/0043 ,  A61F2250/0047 ,  G05B19/4097 ,  G05B2219/35017 ,  G05B2219/45168 ,  G05B2219/49008 ,  G06F17/5018 ,  G06F2217/16 ,  G06F2217/44 ,  Y02P90/265

摘要： A method for manufacturing an object having a potential {x} which is generated in response to a field {f} applied thereto is provided. The method includes the step of designing a geometric model of the object. A computerized mathematical model of the object is generated by discretizing the geometric model of the object into a plurality of finite elements and defining nodes at boundaries of the elements, wherein values of the field {f} and potential {x} are specified at the nodes. A material property matrix [k] is then calculated based on the relationship {f}=[k]{x}. Material property coefficients are then extracted from the material property matrix [k] for each finite element in the computerized mathematical model and the extracted material property coefficients are compared to material property coefficients for known materials to match the extracted material property coefficients to the material property coefficients for known materials. Manufacturing parameters corresponding to the matched material property coefficients are then determined. The object is then manufactured in accordance with the determined manufacturing parameters.

公开(公告)号：EP0938279A1

公开(公告)日：1999-09-01

申请号：EP98938572.0

申请日：1998-08-24

申请人： METOXIT AG

发明人： RIEGER, Wolfhart ,  WOLF, Hans ,  FLUCK, Herbert

IPC分类号： A61F2 ,  A61L27

CPC分类号： A61F2/32 ,  A61F2/30 ,  A61F2/34 ,  A61F2/3662 ,  A61F2002/30046 ,  A61F2002/30934 ,  A61F2002/3611 ,  A61F2250/0047 ,  A61F2310/00011 ,  A61F2310/00161 ,  A61F2310/00191 ,  A61F2310/00203 ,  A61F2310/00239 ,  A61F2310/00281 ,  A61F2310/00305 ,  A61F2310/00311 ,  A61F2310/00317 ,  A61L27/10

摘要： The invention relates to an endoprosthesis with a joint consisting of a ball and a spherical cap which are constructed from hard ceramic (Al2O3). Said joint is neutral to the body, i.e. biocompatible, and, in principle, offers a high level of comfort to the wearer after implantation as long as the comfort would not be superimposed by a certain susceptibility to breaking of the joint, especially the ball. The invention provides a combination of hard ceramic materials with which the susceptibility to breaking is reduced.

公开(公告)号：EP0254470A1

公开(公告)日：1988-01-27

申请号：EP87306232.7

申请日：1987-07-14

申请人： ALCAN INTERNATIONAL LIMITED

发明人： Southern, Jennifer Carolyn

IPC分类号： C01F7/02 ,  C04B35/10

CPC分类号： C01F7/441 ,  A61F2/32 ,  A61F2002/30046 ,  A61F2250/0047 ,  A61F2310/00203 ,  C01P2006/10 ,  C01P2006/12 ,  C04B35/111

摘要： Granular alpha-alumina obtained from pseudo-bohmite and haivng a content of non-volatile impurities not exceeding 0.5% and a surface of at least 3m²/g, is disclosed. The grains can produce a fired alumina article of density at least 3.8 g/cm³ on firing for 2 hours at 1500°C after pressing the particles at at least 618 bars. The product may be obtained by calcining pseudo-bohmite of surface area at least 200m²/g.

摘要翻译： 公开了从假勃姆石获得的颗粒状α-氧化铝，并且含有不超过0.5％的非挥发性杂质和至少3m 2 / g的表面。 颗粒可以在至少618巴压制颗粒之后在1500℃下烧制2小时，产生密度至少为3.8g / cm 3的烧结氧化铝制品。 该产品可以通过煅烧表面积至少为200m 2 / g的假勃姆石来获得。