Storage stable calcium phosphate cements
    1.
    发明授权
    Storage stable calcium phosphate cements 有权
    储存稳定的磷酸钙水泥

    公开(公告)号:US6053970A

    公开(公告)日:2000-04-25

    申请号:US345984

    申请日:1999-06-30

    摘要: Two component, storage stable apatitic cement compositions, as well as methods for their production, are provided. The dry component of subject apatitic cements comprises basic calcium source particles at least partially coated with a partially neutralized acidic calcium phosphate. The dry component of subject compositions is prepared by combining basic calcium source particles with dissolved acidic phosphate in at least a partially aqueous medium, whereby the basic calcium source particles become partially coated with a partially neutralized acidic calcium phosphate. The reaction is terminated prior to completion of the reaction between the acidic phosphate and the basic calcium source by removing the available water from the reaction mixture. In a first mode, the subject cement may be produced by mechanically mixing an acidic phosphate source with basic calcium source particles in the presence of an aqueous solvent and stopping the reaction between the acid and base prior to completion. Alternatively, a phosphoric acid solution may be rapidly combined with a basic calcium phosphate particle slurry such that partially neutralized acidic calcium phosphate precipitates on the surface of the basic calcium phosphate particles.

    摘要翻译: 提供了两种组分的储存稳定的磷灰石水泥组合物,以及它们的生产方法。 受试者磷灰石水泥的干组分包括至少部分涂覆有部分中和的酸性磷酸钙的碱性钙源颗粒。 通过将碱性钙源颗粒与溶解的酸性磷酸盐在至少部分水性介质中组合来制备主体组合物的干组分,由此碱性钙源颗粒部分地涂覆有部分中和的酸性磷酸钙。 在酸性磷酸盐和碱性钙源之间的反应完成之后,通过从反应混合物中除去可用的水来终止反应。 在第一模式中,主体水泥可以通过在水性溶剂的存在下将酸性磷酸盐源与碱性钙源颗粒机械混合并在完成之前停止酸和碱之间的反应来制备。 或者,磷酸溶液可以与碱性磷酸钙颗粒浆料快速组合,使得部分中和的酸性磷酸钙在碱性磷酸钙颗粒的表面上沉淀。

    Storage stable calcium phosphate cements
    3.
    发明授权
    Storage stable calcium phosphate cements 失效
    储存稳定的磷酸钙水泥

    公开(公告)号:US5964932A

    公开(公告)日:1999-10-12

    申请号:US111347

    申请日:1998-07-07

    摘要: Two component, storage stable apatitic cement compositions, as well as methods for their production, are provided. The dry component of subject apatitic cements comprises basic calcium source particles at least partially coated with a partially neutralized acidic calciumim phosphate. The dry component of subject compositions is prepared by combining basic calcium source particles with dissolved acidic phosphate in at least a partially aqueous medium, whereby the basic calcium source particles become partially coated with a partially neutralized acidic calcium phosphate. The reaction is terminated prior to completion of the reaction between the acidic phosphate and the basic calcium source by removing the available water from the reaction mixture. In a first mode, the subject cement may be produced by mechanically mixing an acidic phosphate source with basic calcium source particles in the presence of an aqueous solvent and stopping the reaction between the acid and base prior to completion. Alternatively, a phosphoric acid solution may be rapidly combined with a basic calcium phosphate particle slurry such that partially neutralized acidic calcium phosphate precipitates on the surface of the basic calcium phosphate particles.

    摘要翻译: 提供了两种组分的储存稳定的磷灰石水泥组合物,以及它们的生产方法。 受试者磷灰石水泥的干组分包括至少部分涂覆有部分中和的酸性磷酸钙的碱性钙源颗粒。 通过将碱性钙源颗粒与溶解的酸性磷酸盐在至少部分水性介质中组合来制备主体组合物的干组分,由此碱性钙源颗粒部分地涂覆有部分中和的酸性磷酸钙。 在酸性磷酸盐和碱性钙源之间的反应完成之后,通过从反应混合物中除去可用的水来终止反应。 在第一模式中,主体水泥可以通过在水性溶剂的存在下将酸性磷酸盐源与碱性钙源颗粒机械混合并在完成之前停止酸和碱之间的反应来制备。 或者,磷酸溶液可以与碱性磷酸钙颗粒浆料快速组合,使得部分中和的酸性磷酸钙在碱性磷酸钙颗粒的表面上沉淀。

    Storage stable calcium phosphate cements
    5.
    发明授权
    Storage stable calcium phosphate cements 失效
    储存稳定的磷酸钙水泥

    公开(公告)号:US5683496A

    公开(公告)日:1997-11-04

    申请号:US645573

    申请日:1996-05-14

    摘要: Two component, storage stable apatitic cement compositions, as well as methods for their production, are provided. The dry component of subject apatitic cements comprises basic calcium source particles at least partially coated with a partially neutralized acidic calcium phosphate. The dry component of subject compositions is prepared by combining basic calcium source particles with dissolved acidic phosphate in at least a partially aqueous medium, whereby the basic calcium source particles become partially coated with a partially neutralized acidic calcium phosphate. The reaction is terminated prior to completion of the reaction between the acidic phosphate and the basic calcium source by removing the available water from the reaction mixture. In a first mode, the subject cement may be produced by mechanically mixing an acidic phosphate source with basic calcium source particles in the presence of an aqueous solvent and stopping the reaction between the acid and base prior to completion. Alternatively, a phosphoric acid solution may be rapidly combined with a basic calcium phosphate particle slurry such that partially neutralized acidic calcium phosphate precipitates on the surface of the basic calcium phosphate particles.

    摘要翻译: 提供了两种组分的储存稳定的磷灰石水泥组合物,以及它们的生产方法。 受试者磷灰石水泥的干组分包括至少部分涂覆有部分中和的酸性磷酸钙的碱性钙源颗粒。 通过将碱性钙源颗粒与溶解的酸性磷酸盐在至少部分水性介质中组合来制备主体组合物的干组分,由此碱性钙源颗粒部分地涂覆有部分中和的酸性磷酸钙。 在酸性磷酸盐和碱性钙源之间的反应完成之后,通过从反应混合物中除去可用的水来终止反应。 在第一模式中,主体水泥可以通过在水性溶剂的存在下将酸性磷酸盐源与碱性钙源颗粒机械混合并在完成之前停止酸和碱之间的反应来制备。 或者,磷酸溶液可以与碱性磷酸钙颗粒浆料快速组合,使得部分中和的酸性磷酸钙在碱性磷酸钙颗粒的表面上沉淀。

    Threaded syringe for delivery of a bone substitute material
    10.
    发明授权
    Threaded syringe for delivery of a bone substitute material 有权
    用于输送骨替代材料的螺纹注射器

    公开(公告)号:US06793660B2

    公开(公告)日:2004-09-21

    申请号:US09932313

    申请日:2001-08-20

    IPC分类号: A61B1756

    摘要: The invention relates to a syringe for delivery of a bone substitute material. The syringe includes a barrel for holding the material, a plunger receivable within the barrel and having a threaded portion, and an engagement member including a threaded throughbore positioned coaxial with the barrel. The threaded portion of the plunger is movable through the threaded throughbore barrel by pushing the plunger in the axial direction, and by rotating the plunger. The invention also relates to a method of expelling material from a syringe.

    摘要翻译: 本发明涉及一种用于输送骨替代材料的注射器。 注射器包括用于保持材料的筒,可接收在筒体内并具有螺纹部分的柱塞,以及包括与筒体同轴设置的螺纹通孔的接合构件。 柱塞的螺纹部分通过沿着轴向推动柱塞并且通过旋转柱塞可移动穿过螺纹穿孔筒。 本发明还涉及从注射器排出材料的方法。