• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An astragalus prosthesis is comprises a subtalar articular surface and talonaVicular articular surface; and the subtalar articular surface and/or talonaVicular articular surface is a porous structure. the astragalus prosthesis provided by this invention has the biological function that it can promote the prosthesis to rapidly fusion and grow with the calcaneus and naVicular bone and has great medical value.
    公开号:NL2019804A
    申请号:NL2019804
    申请日:2017-10-26
    公开日:2018-05-24
    发明作者:Tang Kanglai；Fan Shuqian；Wang Han；Xie Meiming；Lu Chenglin；Yuan Chengsong；Zhou Binghua；Tao Xu；Wang Sen
    申请人:The First Affiliated Hospital With The Third Military Medical Univ Of Pla；
    IPC主号:
    专利说明:

    Technical field
    The invention relates to a prosthesis, in particular to an astragalus prosthesis.
    Background of technology
    The Collapsed astragalus osteonecrosis can’t be operated with the ankle arthroplasty is mainly because of the load-bearing damage to the astragalus and excessive bone mass loss, instead it is always be operated with the astragalus extirpation which tends to cause instability surrounding the astragalus or it is operated with the fusion surrounding the astragalus which tends to cause limit motion of the ankle articular. How to effectively reestablish the total astragalus and recover the function of ankle articular is the subject matter for orthopedist to deal with the collapsed astragalus osteonecrosis. Prosthetic replacement provides favorable technological means for reestablishing the astragalus and recovering the function of ankle articular. The existing astragalus prosthesis generally only plays a part in structure supporting and has no biological function. How to develop the personalized artificial astragalus prosthesis with biological function is the main issue for the preparation of astragalus prosthesis and clinical application.
    Contents of the invention
    So the invention is aimed at providing an astragalus prosthesis which is with the biological function to promote the prosthesis surface to rapidly fusion and grow with the calcaneus and navicular bone, which has great medical value.
    The astragalus prosthesis of the invention comprises the subtalar articular surface and talonavicular articular surface, and the subtalar articular surface and/or talonavicular articular surface is with the porous structure.
    Further the subtalar articular surface and/or talonavicular articular surface is provided with the hydroxyapatite coating.
    Further the subtalar articular surface is provided with at least one fixed device to fix the astragalus and calcaneus.
    Further the fixed device is the fixed leg and /or fixed orifice.
    Further the number of the fixed leg is two and the number of the fixed orifice is one, and the three fixed devices are arranged in triangle shape.
    Further the talonavicular articular surface is provided with talonavicular fixed orifice to fix the astragalus and navicular bone.
    Compared with existing technology, the astragalus prosthesis of the invention has the beneficial effects that it is with the biological function to promote the prosthesis to rapidly fusion and grow with the calcaneus and navicular bone, and the astragalus prosthesis is with great medical value as it is easily installed and fixed and it is convenient for clinical application.
    Description of the figures
    See the further description for the invention combining with the figures and embodiments:
    Figure 1 is the first schematic diagram on the astragalus prosthesis of the invention; Figure 2 is the second schematic diagram on the astragalus prosthesis of the invention; Figure 3 is the third schematic diagram on the astragalus prosthesis of the invention;
    The corresponding name for each label is respectively as following: subtalar articular surface (1), talonavicular articular surface (2), fixed leg (3), fixed orifice (4), and talonavicular fixed orifice (5).
    Specific mode of execution
    Figure 1 is the first schematic diagram on the astragalus prosthesis of this invention,
    Figure 2 is the second schematic diagram on the astragalus prosthesis of this invention and Figure 3 is the third schematic diagram on the astragalus prosthesis of this invention.
    As shown in the figures: the astragalus prosthesis of this invention comprises the subtalar articular surface (1) and talonavicular articular surface (2); and the subtalar articular surface (1) and/or talonavicular articular surface (2) is porous structure.
    In the embodiment, the subtalar articular surface (1) and/or talonavicular articular surface (2) is provided with hydroxyapatite coating, which is more beneficial to the rapid fusion and growth between the subtalar articular surface (1) and calcaneus and between the talonavicular articular surface (2) and navicular bone.
    In the embodiment, the subtalar articular surface (1) is provided with at least one fixed device to fix the astragalus and calcaneus for installing and fixing the prosthesis.
    In the embodiment, the fixed device is the fixed leg (3) and/or fixed orifice (4), which has simple construction and is easily manufactured.
    In the embodiment, the number of the fixed leg (3) is two, and the number of the fixed orifice (4) is one, and the three fixed devices are arranged in triangle shape, which can stably and reliably fix the astragalus and calcaneus.
    In the embodiment, the talonavicular articular surface (2) is provided with the talonavicular fixed orifice (5) to fix astragalus and navicular bone, which is simple in design and easy to perform.
    The principle of the invention is that the subtalar articular surface (1) and/or talonavicular articular surface (2) of the astragalus prosthesis is porous structure, and after the operation, the porous structure on the subtalar articular surface (1) and/or talonavicular articular surface (2) is beneficial to promote the rapid fusion and growth between the subtalar articular surface (1) and calcaneus and between the talonavicular articular surface (2) and navicular bone, so the astragalus prosthesis of the invention resolves the technological difficulty that the traditional prosthesis has low fusion rate with the bone interface, promoting the rapid fusion between the bone interface and prosthesis interface after operation, which recovers the post-operation biological function to the utmost extent and has great medical value.
    And finally, the above embodiments are only used for describing the technical proposal of the invention other than restricting the invention to the specifically described embodiments. While the invention has been described in connection with the preferred embodiments, those skilled in the field will understand that various modifications of the just described embodiments can be configured in form and details, without departing from the spirit and scope of the invention restricted by the attached claims.
    权利要求:
    Claims (6)
    [1]
    Conclusions:
    Leg cartilage prosthesis characterized in that it comprises a subtalar articular surface (1) and a talonavicular articular surface (2) and the subtalar articular surface (1)
    5 and / or the talonavicular articular surface (2) is a porous structure.
    [2]
    Leg-bone prosthesis according to claim 1, characterized in that the subtalar articular surface (1) and / or the talonavicular articular surface (2) is provided with a hydroxylapatite coating.
    [3]
    The leg bone prosthesis according to claim 1, characterized in that the subtalar articular surface (1) has at least one fastening means for securing the leg bone and the heel bone together.
    15
    [4]
    The leg bone prosthesis according to claim 3, characterized in that the fastening means is a fastening leg (3) or a fastening opening (4).
    [5]
    The leg bone prosthesis according to claim 4, characterized in that the number of attachment legs is two and the number of attachment openings is one, the
    20 fasteners form a triangle.
    [6]
    The leg bone prosthesis according to claim 1, characterized in that the talonavicular articular surface (2) is provided with a talonavicular attachment opening (5) for attaching the leg bone and the scaphoid together.
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    同族专利:
    公开号 | 公开日
    CN106618806A|2017-05-10|
    NL2019804B1|2019-12-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN1189221C|2003-06-11|2005-02-16|武汉理工大学|Endosteal planting body for guiding bone tissue into growth and its preparation method|
    CN201164513Y|2008-03-03|2008-12-17|曼德卡姆有限公司|Artificial hip joint and femur shaft|
    CN102048600B|2009-10-27|2013-06-12|上海交通大学医学院附属第九人民医院|Total ankle plus total talus prosthesis|
    US8801796B2|2012-12-31|2014-08-12|Richard A. Rogachefsky|Bone prosthesis for maintaining joint operation in complex joints|
    AU2014321170B2|2014-08-26|2017-07-06|Wright Medical Technology, Inc|Intramedullary support with porous metal splines|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN201611024666.6A|CN106618806A|2016-11-17|2016-11-17|Talus prosthesis|
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