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    Sequentially cross-linked polyethylene
    22.
    发明授权
    Sequentially cross-linked polyethylene 有权
    顺序交联聚乙烯

    公开(公告)号：US08680173B2

    公开(公告)日：2014-03-25

    申请号：US13658037

    申请日：2012-10-23

    Applicant: Howmedica Osteonics Corp.

    Inventor： Aiguo Wang ,  John H. Dumbleton ,  Aaron Essner ,  Shi-Shen Yau

    IPC: A61F2/02 ,  A61F2/30 ,  A61F2/00

    CPC classification number: C08J3/28 ,  A61L27/16 ,  C08J3/247 ,  C08L23/06 ,  C08L2312/06

    Abstract: A method of producing an improved polyethylene, especially an ultra-high molecular weight polyethylene utilizes a sequential irradiation and annealing process to form a highly cross-linked polyethylene material. The use of sequential irradiation followed by sequential annealing after each irradiation allows each dose of irradiation in the series of doses to be relatively low while achieving a total dose which is sufficiently high to cross-link the material. The process may either be applied to a preformed material such as a rod or bar or sheet made from polyethylene resin or may be applied to a finished polyethylene part.

    Abstract translation: 制备改进的聚乙烯，特别是超高分子量聚乙烯的方法利用顺序的照射和退火方法形成高度交联的聚乙烯材料。 在每次照射之后使用顺序照射，然后进行顺序退火，允许在一系列剂量中的每个剂量的照射相对较低，同时实现足够高的交联材料的总剂量。 该方法可以应用于预成型材料，例如由聚乙烯树脂制成的棒或棒或片，或者可以施加到成品聚乙烯部分上。

    SEQUENTIALLY CROSS-LINKED POLYETHYLENE
    23.
    发明申请
    SEQUENTIALLY CROSS-LINKED POLYETHYLENE 有权
    连续交联的聚乙烯

    公开(公告)号：US20130046042A1

    公开(公告)日：2013-02-21

    申请号：US13658037

    申请日：2012-10-23

    Applicant: Howmedica Osteonics Corp.

    Inventor： Aiguo Wang ,  John H. Dumbleton ,  Aaron Essner ,  Shi-Shen Yau

    IPC: C08J3/28 ,  C08J3/24

    CPC classification number: C08J3/28 ,  A61L27/16 ,  C08J3/247 ,  C08L23/06 ,  C08L2312/06

    Abstract: A method of producing an improved polyethylene, especially an ultra-high molecular weight polyethylene utilizes a sequential irradiation and annealing process to form a highly cross-linked polyethylene material. The use of sequential irradiation followed by sequential annealing after each irradiation allows each dose of irradiation in the series of doses to be relatively low while achieving a total dose which is sufficiently high to cross-link the material. The process may either be applied to a preformed material such as a rod or bar or sheet made from polyethylene resin or may be applied to a finished polyethylene part.

    Abstract translation: 制备改进的聚乙烯，特别是超高分子量聚乙烯的方法利用顺序的照射和退火方法形成高度交联的聚乙烯材料。 在每次照射之后使用顺序照射，然后进行顺序退火，允许在一系列剂量中的每个剂量的照射相对较低，同时实现足够高的交联材料的总剂量。 该方法可以应用于预成型材料，例如由聚乙烯树脂制成的棒或棒或片，或者可以施加到成品聚乙烯部分上。

    Method of manufacturing a tibial implant
    24.
    发明授权
    Method of manufacturing a tibial implant 有权

    公开(公告)号：US12268609B2

    公开(公告)日：2025-04-08

    申请号：US18948855

    申请日：2024-11-15

    Applicant: Howmedica Osteonics Corp.

    Inventor： Aiguo Wang ,  Matthew P. Poggie ,  Nicholas Nai Guang Dong

    IPC: A61F2/38 ,  A61F2/30 ,  A61F2/46 ,  B22F10/20 ,  B22F10/28 ,  B22F10/38 ,  B33Y10/00

    Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.

    Partially porous tibial component
    25.
    发明授权
    Partially porous tibial component 有权

    公开(公告)号：US11564801B2

    公开(公告)日：2023-01-31

    申请号：US16429807

    申请日：2019-06-03

    Applicant: Howmedica Osteonics Corp.

    Inventor： Aiguo Wang ,  Matthew P. Poggie ,  Nicholas Nai Guang Dong

    IPC: A61F2/38 ,  A61F2/30 ,  A61F2/46

    Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.

    SEQUENTIALLY CROSS-LINKED POLYETHYLENE
    28.
    发明申请
    SEQUENTIALLY CROSS-LINKED POLYETHYLENE 有权

    公开(公告)号：US20160024261A1

    公开(公告)日：2016-01-28

    申请号：US14876344

    申请日：2015-10-06

    Applicant: Howmedica Osteonics Corp.

    Inventor： Aiguo Wang ,  John H. Dumbleton ,  Aaron Essner ,  Shi-Shen Yau

    IPC: C08J3/28 ,  C08J3/24

    CPC classification number: C08J3/28 ,  A61L27/16 ,  C08J3/247 ,  C08L23/06 ,  C08L2312/06

    Abstract: A method of producing an improved polyethylene, especially an ultra-high molecular weight polyethylene utilizes a sequential irradiation and annealing process to form a highly cross-linked polyethylene material. The use of sequential irradiation followed by sequential annealing after each irradiation allows each dose of irradiation in the series of doses to be relatively low while achieving a total dose which is sufficiently high to cross-link the material. The process may either be applied to a preformed material such as a rod or bar or sheet made from polyethylene resin or may be applied to a finished polyethylene part.

    METHOD FOR FABRICATING A BIOCOMPATIBLE MATERIAL HAVING A HIGH CARBIDE PHASE AND SUCH MATERIAL
    29.
    发明申请
    METHOD FOR FABRICATING A BIOCOMPATIBLE MATERIAL HAVING A HIGH CARBIDE PHASE AND SUCH MATERIAL 有权
    一种生产高碳化物相的材料的方法

    公开(公告)号：US20150068362A1

    公开(公告)日：2015-03-12

    申请号：US14553343

    申请日：2014-11-25

    Applicant: Howmedica Osteonics Corp.

    Inventor： Daniel E. Lawrynowicz ,  Aiguo Wang ,  Zongtao Zhang ,  Haitong Zeng

    IPC: B22F9/08 ,  C22C32/00 ,  B22F1/00

    CPC classification number: B22F9/082 ,  A61F2/02 ,  A61L27/427 ,  B22D23/00 ,  B22F1/0007 ,  B22F2009/0848 ,  B22F2302/10 ,  C22C32/0052

    Abstract: A method of fabricating a material having a high concentration of a carbide constituent. The method may comprise adding a carbide source to a biocompatible material in which a weight of the carbide source is at least approximately 10% of the total weight, heating the carbide source and the biocompatible material to a predetermined temperature to melt the biocompatible material and allow the carbide source to go into solution to form a molten homogeneous solution, and impinging the molten homogeneous solution with a high pressure fluid to form spray atomized powder having carbide particles. The size of a particle of carbide in the atomized powder may be approximately 900 nanometers or less. The biocompatible material may be cobalt chrome, the carbide source may be graphite, and the fluid may be a gas or a liquid.

    Abstract translation: 一种制造具有高浓度碳化物组分的材料的方法。 该方法可以包括将碳化物源添加到生物相容性材料中，其中碳化物源的重量为总重量的至少约10％，将碳化物源和生物相容性材料加热到预定温度以熔化生物相容性材料并允许 碳化物源进入溶液以形成熔融均匀溶液，并用高压流体冲击熔融的均匀溶液以形成具有碳化物颗粒的喷雾雾化粉末。 雾化粉末中的碳化物颗粒的尺寸可以为约900纳米或更小。 生物相容性材料可以是钴铬，碳化物源可以是石墨，并且流体可以是气体或液体。

    COBALT CHROME COATED TITANIUM IMPLANT
    30.
    发明申请
    COBALT CHROME COATED TITANIUM IMPLANT 有权
    钴铬涂层钛皮植入

    公开(公告)号：US20140249642A1

    公开(公告)日：2014-09-04

    申请号：US13783894

    申请日：2013-03-04

    Applicant: HOWMEDICA OSTEONICS CORP.

    Inventor： Zongtao Zhang ,  Keenan Michael Hanson ,  Thomas Francis McCarthy ,  Daniel E. Lawrynowicz ,  Aiguo Wang

    IPC: A61L27/30 ,  A61F2/34

    CPC classification number: A61L27/306 ,  A61F2/30767 ,  A61F2/32 ,  A61F2002/30934 ,  A61F2002/3098 ,  A61F2002/3208 ,  A61F2310/00023 ,  A61F2310/00413 ,  A61L27/06 ,  A61L2420/02 ,  A61L2420/08 ,  A61L2430/02 ,  C23C14/16

    Abstract: An orthopedic implant has a prosthetic joint component made, for example, of polyethylene and another component made of a titanium or titanium alloy substrate. The substrate has a first bearing surface coated with a coating made of a cobalt-chromium molybdenum alloy. The bearing surface slidably receives a second bearing surface of the prosthetic joint component. The cobalt-chromium molybdenum alloy coating forming the first bearing surface is made up of hexagonal close packed (HCP) grains having a columnar structure with a length of about 1 μm and a width of about 0.1 μm with the length of each HCP grains being oriented generally perpendicular to the titanium substrate bearing surface.

    Abstract translation: 矫形植入物具有由例如聚乙烯和由钛或钛合金基底制成的另一部件制成的假体关节部件。 基底具有涂覆有由钴 - 铬钼合金制成的涂层的第一轴承表面。 所述支承面可滑动地容纳所述假肢关节部件的第二支承面。 形成第一轴承表面的钴铬钼合金涂层由具有长度约1μm，宽度约0.1μm的柱状结构的六方密堆积（HCP）晶粒组成，每个HCP晶粒的长度取向 一般垂直于钛基板轴承表面。

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