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    Two way shape memory alloy medical stent
    1.
    发明授权
    Two way shape memory alloy medical stent 失效
    双向形状记忆合金医用支架

    公开(公告)号：US5562641A

    公开(公告)日：1996-10-08

    申请号：US246823

    申请日：1994-05-20

    Applicant: Josef Flomenblit ,  Nathaly Budigina ,  Yuval Bromberg

    Inventor： Josef Flomenblit ,  Nathaly Budigina ,  Yuval Bromberg

    IPC: A61F2/84 ,  A61F2/00 ,  A61F2/06 ,  A61F2/88 ,  A61M29/02 ,  A61M25/00

    CPC classification number: A61F2/88 ,  A61F2210/0033 ,  A61F2210/0038 ,  A61F2210/0042 ,  A61F2250/0042

    Abstract: A stent for placing in a tubular organ so as to support its diameter to remain above a critical diameter. The stent comprises a spiral coil or cylinder made of a two-way shape memory alloy and has a super-elastic state in which the stent's diameter is at least about the critical diameter or more but within a physiological range tolerated by the organ and having a soft state in which the stent's diameter, after changing to this state from the super-elastic state, which is less than the critical diameter. The shape memory alloy has two transition temperatures being within a range that will not damage biological tissue, of which a first transition temperature is a temperature in which it changes from the soft state to the super-elastic state and of which a second transition temperature is a temperature in which it changes from the super-elastic state to the soft state. The arrangement being such that after changing into one of the two states, the stent remains in that state at body temperature.

    Abstract translation: 用于放置在管状器官中以支撑其直径以保持在临界直径以上的支架。 支架包括由双向形状记忆合金制成的螺旋线圈或圆筒，并且具有超弹性状态，其中支架的直径至少约为临界直径或更多但在器官所容许的生理范围内，并具有 柔软状态下，支架的直径，从超弹性状态变为这种状态，其小于临界直径。 形状记忆合金具有两个转变温度在不会损害生物组织的范围内，其中第一转变温度是其从软态变为超弹性状态的温度，其中第二转变温度为 其从超弹性状态变为软状态的温度。 该布置使得在改变为两种状态之一后，支架在体温下保持在该状态。

    Implantable medical devices of shape memory alloy
    2.
    发明授权
    Implantable medical devices of shape memory alloy 失效
    形状记忆合金的可植入医疗器械

    公开(公告)号：US5876434A

    公开(公告)日：1999-03-02

    申请号：US910030

    申请日：1997-08-12

    Applicant: Josef Flomenblit ,  Nathaly Budigina

    Inventor： Josef Flomenblit ,  Nathaly Budigina

    IPC: A61C8/00 ,  A61F2/00 ,  A61F2/06 ,  A61F2/82 ,  A61F2/88 ,  A61K6/04 ,  A61L27/00 ,  A61L27/06 ,  A61L31/00 ,  A61L31/02 ,  C22F1/00 ,  C22F1/10 ,  A61C13/12

    CPC classification number: A61F2/88 ,  A61C8/0033 ,  A61L27/06 ,  A61L31/022 ,  C22F1/006 ,  A61C2201/007 ,  A61F2/82 ,  A61F2210/0042 ,  A61F2310/00023 ,  A61L2400/16

    Abstract: A medical device which comprises a shape memory alloy (SMA) portion which is deformable from an undeformed first configuration assumed by it in an austenitic state of the SMA to a deformed second configuration, whereby the SMA is converted into a strain-induced martensite or partial martensite. This conversion increases the temperature of transformation (A.sub.s) from an initial transformation temperature A.sub.s .degree. to a temperature A.sub.s '. When the SMA, once in the second configuration, is heated to a temperature higher than A.sub.s ', it transforms to an at least partial austenite and it transforms towards the undeformed first configuration with a decrease of A.sub.s from A.sub.s ' to A.sub.s .degree.. A.sub.s .degree. is below body temperature such that when the device is deployed in the body, after placing it in its target location with the SMA portion in the second configuration and then heating it to assume its first configuration, the SMA is stable in the at least partial austenite at body temperature.

    Abstract translation: 一种医疗装置，其包括形状记忆合金（SMA）部分，所述形状记忆合金（SMA）部分可从其在SMA的奥氏体状态中被假设的未变形的第一构造变形到变形的第二构造，由此将SMA转换为应变诱导马氏体或部分 马氏体 这种转化将转变温度（As）从初始转化温度As DEG提高到温度As'。 当SMA在第二构造中被加热至高于As'的温度时，转变为至少部分奥氏体，并且将As从As'降低到As，转变为未变形的第一构型。 当DEG低于体温，使得当装置部署在身体中时，在将SMA部分置于第二构造之后将其放置在其目标位置中，然后将其加热以呈现其第一构型，SMA至少在至少 部分奥氏体在体温。

    Urological stent and deployment device therefor
    3.
    发明授权
    Urological stent and deployment device therefor 失效
    泌尿支架及其部署装置

    公开(公告)号：US5667522A

    公开(公告)日：1997-09-16

    申请号：US397674

    申请日：1995-03-02

    Applicant: Josef Flomenblit ,  Nathaly Budigina

    Inventor： Josef Flomenblit ,  Nathaly Budigina

    IPC: A61M29/00 ,  A61F2/00 ,  A61F2/88 ,  A61F2/95

    CPC classification number: A61F2/88 ,  A61F2/95 ,  A61F2210/0019

    Abstract: A stent adapted for placing in the urethra so as to retain the urethra's diameter above a critical level is provided. The stent comprises:a spiral band made of a two-way shape memory alloy having two memory states consisting of a first state in which said alloy is soft and substantially deformable and a second state in which the alloy has super elastic properties and is substantially non-deformable, the alloy changes from the fast state to the second state at a first transition temperature being above physiological body temperature and changes from the second to the first state at a second transition temperature being below physiological body temperature; in the second state consecutive windings of the band are adjacent one another so that they form together essentially a continuous cylindrical tube of a diameter above said critical level; in the first state the band forms a coiled structure having a maximal external diameter such so as to allow deployment of stent within the urethra.

    Abstract translation: 提供适于放置在尿道中以将尿道直径保持在临界水平以上的支架。 支架包括：由双向形状记忆合金制成的螺旋带，其具有两个记忆状态，该记忆状态由第一状态组成，其中所述合金是柔软且基本可变形的，以及第二状态，其中该合金具有超弹性， 在第一转变温度高于生理体温时，合金从快速状态变为第二状态，并且在低于生理体温的第二转变温度下从第二状态变为第一状态; 在第二状态下，带的连续绕组彼此相邻，使得它们基本上形成直径高于所述临界水平的连续圆柱形管; 在第一状态下，带形成具有最大外径的盘绕结构，以允许支架在尿道内展开。

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