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14 条记录 (耗时 0.014 秒)

    BIOABSORBABLE MEDICAL DEVICE OR MEDICAL DEVICE COMPONENT AND PREPARATION METHOD THEREOF
    2.
    发明公开
    BIOABSORBABLE MEDICAL DEVICE OR MEDICAL DEVICE COMPONENT AND PREPARATION METHOD THEREOF 审中-公开
    生物可吸收医疗器械或医疗器械的组成及其制造方法

    公开(公告)号：EP2837359A1

    公开(公告)日：2015-02-18

    申请号：EP13775778.7

    申请日：2013-04-11

    申请人： Lifetech Scientific (Shenzhen) Co., Ltd.

    发明人： ZHANG, Deyuan ,  LIN, Wenjiao ,  LIU, Xiangdong ,  WANG, Wenbin

    IPC分类号： A61F2/00 ,  A61L31/14 ,  C23C8/26

    CPC分类号： A61L31/148 ,  A61F2/86 ,  A61F2210/0004 ,  A61F2240/001 ,  A61F2250/0019 ,  A61F2250/003 ,  A61L27/042 ,  A61L27/58 ,  A61L31/022 ,  C23C8/02 ,  C23C8/26 ,  C23C8/36 ,  C23C8/38 ,  C23C8/80 ,  C25F3/24

    摘要： A bioabsorbable medical device or a medical device component comprises an absorbable component prepared by subjecting a prefabricated component of an iron-based raw material to ion nitriding. Substance composition inside the absorbable component changes with the depth from the surface. The absorbable component comprises at least a first part and a second part. The first part surrounds the second part. Hardness of the first part is higher than hardness of the second part. An interface exists between the first part and the second part. A crack generated in the first part is impeded by the interface when extending to the second part. On the premise of ensuring radial stand strength, the bioabsorbable medical device or medical device component and a preparation method thereof reduce wall thickness of an iron-based stand, improve a stand corrosion rate and malleability, and achieve broader adaptability.

    摘要翻译： 生物可吸收医疗装置或医疗装置部件包括通过对基于铁的原料的预制组分离子氮化制备可吸收的组分。 从表面的深度的吸收部件的变化的内部物质组合物。 可吸收的组分包含至少一个第一部分和一个第二部分。 第一部分围绕第二部分。 第一部分的硬度大于第二部分的硬度高。 第一部分和第二部分之间存在的接口。 在第一部分中产生的裂纹被接口阻碍当延伸到所述第二部分。 关于确保径向站在强度，所述生物可吸收医疗装置或医疗装置组分和其制备方法降低铁基架的壁厚的前提下，一个独立提高腐蚀速率和延展性，以及实现更广泛的适应性。

    LUMEN STENT AND PREFORM THEREOF, AND METHODS FOR PREPARING LUMEN STENT AND PREFORM THEREOF
    3.
    发明公开
    LUMEN STENT AND PREFORM THEREOF, AND METHODS FOR PREPARING LUMEN STENT AND PREFORM THEREOF 有权
    罗门支架及其制备方法，以及制备罗门支架及其制备方法

    公开(公告)号：EP3225215A1

    公开(公告)日：2017-10-04

    申请号：EP15863271.1

    申请日：2015-11-12

    申请人： Lifetech Scientific (Shenzhen) Co. Ltd.

    发明人： ZHANG, Deyuan ,  CHEN, Xianmiao ,  LIN, Wenjiao ,  LIU, Xiangdong

    IPC分类号： A61F2/82 ,  A61L31/02 ,  A61L27/04

    摘要： Provided are a lumen stent preform using a plasma nitriding technology, a preparation method thereof, a method for preparing a lumen stent by using the preform, and a lumen stent obtained according to the method. The preform is manufactured by using pure iron or an iron alloy containing no strong nitrogen compound, has a hardness of 160-250HV0.05/10, and has a microstructure that is a deformed structure having a grain size scale greater than or equal to 9 or a deformed structure after cold machining. Alternatively, the preform is an iron alloy containing a strong nitrogen compound, and has a microstructure that is a deformed structure having a grain size scale greater than or equal to 9 or a deformed structure after cold machining. The lumen stent preform meets the requirements of a conventional stent for radial strength and plasticity, so that plasma nitriding is applicable to commercial preparation of a lumen stent.

    摘要翻译： 提供了一种使用等离子氮化技术的腔支架预制件，其制备方法，使用该预制件制备腔支架的方法以及根据该方法获得的腔支架。 预成型体通过使用纯铁或不含强氮化合物的铁合金来制造，具有160-250HV0.05 / 10的硬度，并且具有作为晶粒尺寸等级大于或等于9的变形结构的微观结构 或冷加工后的变形结构。 或者，预成型体是含有强氮化合物的铁合金，具有作为粒度尺寸为9以上的变形组织或冷加工后的变形组织的变形组织。 腔支架预制件符合传统支架的径向强度和塑性的要求，因此等离子氮化适用于腔支架的商业制备。

    OCCLUSION DEVICE AND METHOD FOR ITS MANUFACTURE
    4.
    发明公开
    OCCLUSION DEVICE AND METHOD FOR ITS MANUFACTURE 有权
    维多利亚ZU IHRER HERSTELLUNG的OKKLUSIONSVORRICHTUNG

    公开(公告)号：EP2617386A1

    公开(公告)日：2013-07-24

    申请号：EP10857154.8

    申请日：2010-10-25

    申请人： Lifetech Scientific (Shenzhen) Co., Ltd.

    发明人： LIU, Xiangdong ,  ZENG, Weijun

    IPC分类号： A61F2/02 ,  A61B17/00

    CPC分类号： A61B17/12109 ,  A61B17/0057 ,  A61B17/12172 ,  A61B2017/00004 ,  A61B2017/00526 ,  A61B2017/00592 ,  A61B2017/00606 ,  A61B2017/00867 ,  D04C1/06 ,  D10B2509/06

    摘要： An occlusion device comprises a distal end, a proximal end and an elastic braided body which is provided between the proximal end and the distal end and made of wires. The elastic boy is composed of a multi-stage braided net, which comprises at least a first-stage braided net that is closest to the distal end and made of a plurality of first-stage wires, and a second-stage braided net which is braided by a plurality of first-stage wires and second-stage wires all together. The minimum cross-section area of the first-stage braided net after being compressed toward the direction perpendicular to an axis of the elastic braided body is less than the minimum cross-section area of any other-stage braided net after being compressed toward the axis. A method of manufacturing the occlusion device is also provided.

    摘要翻译： 闭塞装置包括远端，近端和弹性编织体，其设置在近端和远端之间并且由电线制成。 弹性男孩由多级编织网组成，其至少包括最靠近远端并由多个第一级线制成的第一级编织网，以及第二级编织网 由多个第一级线和第二级线一起编织。 第一阶段编织网沿与弹性编织体的轴线垂直的方向被压缩后的最小截面积小于任何其它阶段编织网被压向轴线之后的最小横截面面积 。 还提供了一种制造闭塞装置的方法。

    DELIVERY DEVICE
    6.
    发明公开
    DELIVERY DEVICE 审中-公开

    公开(公告)号：EP3479800A1

    公开(公告)日：2019-05-08

    申请号：EP17818945.2

    申请日：2017-05-10

    申请人： Lifetech Scientific (Shenzhen) Co., Ltd.

    发明人： YAO, Bin ,  LIU, Xiangdong

    IPC分类号： A61F2/95

    摘要： A delivery device used for delivering a heart valve, a blood vessel stent, and the like. The device includes a first stopper and a connecting unit. The connecting unit is provided opposite to the first stopper and can move relative to the first stopper. The connecting unit includes an axial connecting portion and at least two axial shafts. The axial shaft is connected to the connecting portion and faces the first stopper. The connecting unit is used to form, together with the first stopper, an enclosed and locked space.

    HEART VALVE PROSTHESIS
    7.
    发明公开
    HEART VALVE PROSTHESIS 审中-公开

    公开(公告)号：EP3689298A1

    公开(公告)日：2020-08-05

    申请号：EP18857993.2

    申请日：2018-09-25

    申请人： Lifetech Scientific (Shenzhen) Co., Ltd.

    发明人： LIU, Xiangdong

    IPC分类号： A61F2/24

    摘要： Disclosed is a heart valve prosthesis (100), comprising a valved stent (110) and valve leaflets (190), wherein the valve leaflets (190) are accommodated in the valved stent (110), at least two valve leaflets(190) are provided and centrosymmetrically distributed along the circumferential direction of an inner surface of the valve leaflet stent (110), one ends of two adjacent valve leaflets (190) are combined together on the valve leaflet stent (110) to form a valve corner (192), the valved stent (110) is provided with a positioning member (1147), and the projections of a perpendicular line of one of the valve corners (192) to the axis of the valved stent (110) and a perpendicular line of the positioning member (1147) to the axis of the valved stent (110) are coincident on a plane perpendicular to the axis of the valved stent (110). The heart valve prosthesis (100) can considerably reduce regurgitation at the center.