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183 条记录 (耗时 0.031 秒)

    Stent delivery balloon with securement structure
    31.
    发明授权
    Stent delivery balloon with securement structure 有权
    支架结构固定支架

    公开(公告)号：US06562061B1

    公开(公告)日：2003-05-13

    申请号：US09510033

    申请日：2000-02-22

    申请人： Lixiao Wang ,  John Jianhua Chen

    发明人： Lixiao Wang ,  John Jianhua Chen

    IPC分类号： A61F206

    CPC分类号： A61M25/1029 ,  A61F2002/9583

    摘要： A stent delivery balloon structure is formed by molding at a desired pressure, temperature and tension a medical balloon with a tube disposed thereabout and subsequently removing one or more layers of material from the body portion of the thus formed medical balloon structure.

    摘要翻译： 通过在期望的压力，温度下模制塑料制成支架输送球囊结构，并且在其周围设置管并且随后从如此形成的医疗气囊结构的主体部分移除一层或多层材料的医疗气囊。

    Surface protection method for stents and balloon catheters for drug delivery
    33.
    发明授权
    Surface protection method for stents and balloon catheters for drug delivery 有权
    用于药物输送的支架和球囊导管的表面保护方法

    公开(公告)号：US06419692B1

    公开(公告)日：2002-07-16

    申请号：US09243580

    申请日：1999-02-03

    申请人： Duchuan Yang ,  Joel Stanslaski ,  Lixiao Wang

    发明人： Duchuan Yang ,  Joel Stanslaski ,  Lixiao Wang

    IPC分类号： A61F206

    CPC分类号： A61L31/16 ,  A61F2/0077 ,  A61F2/91 ,  A61F2/915 ,  A61F2/958 ,  A61F2002/91541 ,  A61F2002/91558 ,  A61F2250/0067 ,  A61L29/085 ,  A61L29/16 ,  A61L31/10 ,  A61L2300/416 ,  A61L2300/608 ,  A61L2420/08

    摘要： A medical device, such as a stent or balloon of a balloon catheter which includes a body portion which has an exterior surface which contacts, at least in part, a vessel wall during treatment. The body portion is expandable from a first position, wherein the body portion is sized for insertion into the vessel lumen, to a second position, wherein at least a portion of the exterior surface is in contact with the lumen wall. The medical device includes a first coating disposed over at least a portion of the exterior surface of the body portion with the first coating including a drug or therapeutic substance which is intended for controlled release from the surface. The medical device further includes a second coating overlying at least a substantial portion of the first coating. The second coating includes a material that is generally impervious to elution of the drug or therapeutic substance therethrough when the body portion is in a first position when inserted into the vessel lumen. The material of the second coating is relatively inelastic so that the second coating fractures during expansion of the body portion to the second position to allow elution of therapeutic substance through a multiplicity of fissures formed through the second coating.

    摘要翻译： 一种医疗装置，例如球囊导管的支架或球囊，其包括主体部分，该主体部分具有在治疗期间至少部分地与血管壁接触的外表面。 主体部分从第一位置可膨胀，其中主体部分的尺寸适于插入血管腔，到达第二位置，其中外表面的至少一部分与内腔壁接触。 医疗装置包括设置在主体部分的外表面的至少一部分上的第一涂层，第一涂层包括用于从表面受控释放的药物或治疗物质。 医疗装置还包括覆盖第一涂层的至少大部分的第二涂层。 第二涂层包括当插入血管内腔时主体部分处于第一位置时通常不透过药物或治疗物质的洗脱的材料。 第二涂层的材料相对无弹性，使得第二涂层在主体部分膨胀到第二位置期间断裂，以允许通过穿过第二涂层形成的多个裂缝洗脱治疗物质。

    Process improvements for preparing catheter balloons
    35.
    发明授权
    Process improvements for preparing catheter balloons 失效
    制备导管球囊的工艺改进

    公开(公告)号：US06328710B1

    公开(公告)日：2001-12-11

    申请号：US08955984

    申请日：1997-10-22

    申请人： Lixiao Wang ,  Paul J. Miller ,  Daniel J. Horn ,  Deborah A. Frank

    发明人： Lixiao Wang ,  Paul J. Miller ,  Daniel J. Horn ,  Deborah A. Frank

    IPC分类号： A61M2900

    CPC分类号： A61M25/1029 ,  A61M25/0045 ,  A61M25/1002 ,  A61M25/104 ,  A61M2025/1075 ,  A61M2025/1088 ,  B29C35/041 ,  B29C49/04 ,  B29C49/18 ,  B29C49/783 ,  B29C2049/0089 ,  B29K2067/00 ,  B29K2105/258 ,  B29K2905/12 ,  B29L2031/7542 ,  Y10T428/1331 ,  Y10T428/1352 ,  Y10T428/139

    摘要： A method for forming a balloon for a dilatation catheter may utilize the steps of extruding a tubing preform of a polyester resin and then blowing the tubing into an oriented balloon, wherein the tubing preform is dried prior to blowing into the balloon form. Other process steps by which balloon cone and waist thicknesses may be reduced involve varying the axial tension and blowing pressure at several stages as a mold containing the balloon preform is dipped into a heating medium. Specifically, tubing of a thermoplastic material is placed in a mold and blown by pressurizing and tensioning the tubing and gradually dipping the mold into a heated heat transfer media so as to sequentially blow a first waist, a body and a second waist portion. The tubing is subjected to a relatively lower pressure while the body portion is blown than while the first and second waist portions are blown.

    摘要翻译： 用于形成用于扩张导管的球囊的方法可以采用以下步骤：挤出聚酯树脂的管坯预成型件，然后将管道吹入定向气囊中，其中将管坯预先吹入气囊形式之前进行干燥。 球囊和腰部厚度可能减小的其他工艺步骤包括在将包含球囊预制件的模具浸入加热介质中时，在几个阶段改变轴向张力和吹塑压力。 具体地说，将热塑性材料的管材放置在模具中，并通过加压和张紧管子并将模具逐渐浸入加热的传热介质中，以便顺序地吹动第一腰部，身体和第二腰部部分而吹塑。 当吹塑本体部分时，管道相对于第一和第二腰部部分被吹送而受到相对较低的压力。

    Stent installation method using balloon catheter having stepped compliance curve
    37.
    发明授权
    Stent installation method using balloon catheter having stepped compliance curve 失效

    公开(公告)号：US5980532A

    公开(公告)日：1999-11-09

    申请号：US931190

    申请日：1997-09-16

    申请人： Lixiao Wang

    发明人： Lixiao Wang

    IPC分类号： A61F2/00 ,  A61F2/06 ,  A61F2/84 ,  A61M25/00 ,  A61M25/10 ,  A61M29/00 ,  A61F11/00

    CPC分类号： A61M25/104 ,  A61F2/958 ,  A61M25/10 ,  A61M25/1002 ,  A61M25/1029 ,  A61F2250/0039 ,  A61M2025/1059 ,  A61M2025/1075

    摘要： A method for installing a stent in a vessel utilizes a single balloon catheter for both low pressure predilation at a relatively small diameter to open the lesion sufficiently to allow insertion and deployment of the stent across the lesion and for subsequent high pressure embedding of the stent in the vessel wall. The same balloon catheter may also be employed to insert and deploy the stent. The balloons utilized in the method have a stepped compliance curve which allows for predilation at a low pressure and predetermined diameter and for high pressure embedding at a substantially larger diameter. The balloons may be provided with a configuration in which only a portion of the balloon has a stepped compliance curve while a further portion has a generally linear compliance profile. With such balloons high pressure treatment of the vessel wall areas not reinforced by the stent can be avoided despite the occurence of longitudinal shrinkage of the stent during expansion thereof.

    Shrinking balloon catheter having nonlinear or hybrid compliance curve
    39.
    发明授权
    Shrinking balloon catheter having nonlinear or hybrid compliance curve 失效
    具有非线性或混合顺应性曲线的收缩球囊导管

    公开(公告)号：US5348538A

    公开(公告)日：1994-09-20

    申请号：US953677

    申请日：1992-09-29

    申请人： Lixiao Wang ,  The Thomas T. Tran

    发明人： Lixiao Wang ,  The Thomas T. Tran

    IPC分类号： A61M25/00 ,  A61M29/02

    CPC分类号： A61M25/1029 ,  A61M25/104 ,  B29L2022/022 ,  B29L2031/7542 ,  Y10S264/909

    摘要： A balloon catheter, having a non-linear compliance curve, made up of a single layered balloon, that was molded from a polymeric material to have a specific nominal diameter and then shrunk to a diameter that is less than the specific nominal diameter. When the shrunk balloon is expanded it has the characteristics of a compliant balloon until its diameter has been expanded to its original specific nominal diameter after which it follows the non compliant compliance curve that it would have had it not been shrunk.

    摘要翻译： 具有非线性顺应性曲线的球囊导管由单层气囊构成，其由聚合物材料模制成具有特定公称直径，然后收缩至小于特定公称直径的直径。 当缩小的气球膨胀时，它具有适应气囊的特征，直到其直径已经扩展到其原始的特定公称直径，然后遵循不符合的顺应曲线，它将不会收缩。

    Medical devices visible by magnetic resonance imaging
    40.
    发明授权
    Medical devices visible by magnetic resonance imaging 有权
    磁共振成像可见的医疗器械

    公开(公告)号：US08620406B2

    公开(公告)日：2013-12-31

    申请号：US10763690

    申请日：2004-01-23

    申请人： Scott R. Smith ,  Steven E. Walak ,  Lixiao Wang ,  Jan Weber ,  Sheng-Ping Zhong

    发明人： Scott R. Smith ,  Steven E. Walak ,  Lixiao Wang ,  Jan Weber ,  Sheng-Ping Zhong

    IPC分类号： A61B5/05

    CPC分类号： G01R33/285 ,  A61B2090/3954 ,  A61M25/0043 ,  A61M25/0127 ,  G01R33/286

    摘要： Medical devices that are visible by magnetic resonance imaging (MRI), and optionally, other imaging techniques, are described. In some embodiments, a medical device adapted for insertion into the body includes an elongated shaft and an electrically conductive path extending spirally about a portion of the shaft. The conductive path is capable of being connected to a current source. The medical device can further include one or more contrast agents (such as MRI contrast agents, radiopaque materials, and/or ultrasound visible materials), which can be arranged in a predetermined manner.

    摘要翻译： 描述了通过磁共振成像（MRI）可视的医疗装置，以及可选的其他成像技术。 在一些实施例中，适于插入到本体中的医疗装置包括细长轴和围绕轴的一部分螺旋地延伸的导电路径。 导电路径能够连接到电流源。 医疗装置还可以包括一种或多种可以以预定方式布置的造影剂（例如MRI造影剂，不透射线材料和/或超声可见材料）。