发明名称 |
Urological stent and deployment device therefor |
摘要 |
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. |
申请公布号 |
AU1979495(A) |
申请公布日期 |
1995.09.18 |
申请号 |
AU19950019794 |
申请日期 |
1995.03.02 |
申请人 |
A. BROMBERG & CO., LTD. |
发明人 |
JOSEF FLOMENBLIT;NATHALY BUDIGINA |
分类号 |
A61M29/00;A61F2/00;A61F2/88;A61F2/95 |
主分类号 |
A61M29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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