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    • 3. 发明申请
    • APPARATUS FOR SUPPLYING RADIOACTIVE GAS TO A DELIVERY DEVICE
    • 将放射性气体供应给送货装置的装置
    • WO9933515A3
    • 1999-09-16
    • PCT/US9825129
    • 1998-12-01
    • COOK INCMED INST INCAPPLE MARC GBATES BRIAN LDEFORD JOHN AFEARNOT NEAL EPURDY JAMES D
    • APPLE MARC GBATES BRIAN LDEFORD JOHN AFEARNOT NEAL EPURDY JAMES D
    • A61M36/04A61F2/958A61M36/12A61N5/10A61M36/06
    • A61M25/10182A61M25/10185A61N5/1002A61N2005/1021
    • Disclosed is a catheter apparatus filled with a radiation carrier material such as an inert radioactive gas for the treatment of restenosis after angioplasty, and malignancies. The inflated catheter includes a single unit or alternatively, a plurality of discrete chambers for transporting the radioactive carrier material and through which, blood may continue to flow during treatment with the prescribed radiation. When the radioactive carrier is a gas such as Xenon 133, an injection apparatus (1400) may be used that permits use of a standard radioactive gas source vial (1401) that may be loaded into the radioactive source vial enclosure or chamber (1403). The means for enclosing the vial (1404) may also serve as an urging mechanism (1442) to urge the source vial (1401) toward one or more piercing cannulae (1406, 1454) which permit delivery of the radioactive gas to the catheter. In one series of embodiments, the radioactive gas is withdrawn through a selector means (1409) such as a multiple position valve into a gas-tight variable volume chamber (1411) such as a syringe which then is deployed to deliver the gas into the catheter. Following treatment, the gas is withdrawn into the syringe and returned to the source vial (1401). In another series of embodiments a syringe filled with a liquid is used to displace the gas either directly into the delivery catheter (1422), or into a second syringe which injects the gas to the delivery catheter (1422).
    • 公开了一种填充有诸如惰性放射性气体的辐射载体材料用于治疗血管成形术后的再狭窄的导管装置和恶性肿瘤。 膨胀的导管包括单个单元或者可替换地,用于运输放射性载体材料的多个离散室,并且血液可以在用规定的辐射治疗期间继续流动。 当放射性载体是诸如氙133的气体时,可以使用注射装置(1400),其允许使用可装载到放射源小瓶外壳或室(1403)中的标准放射性气体源小瓶(1401)。 用于封闭小瓶(1404)的装置还可以用作推动机构(1442),以将源小瓶(1401)推向一个或多个允许将放射性气体输送到导管的刺穿套管(1406,1454)。 在一系列实施例中,放射性气体通过诸如多位置阀的选择器装置(1409)被抽出到诸如注射器的气密可变容积腔室(1411)中,然后将其放置以将气体输送到导管 。 在处理之后,将气体取出到注射器中并返回到源小瓶(1401)。 在另一系列实施例中,使用填充有液体的注射器将气体直接置换到输送导管(1422)中,或者进入将气体注射到输送导管(1422)的第二注射器中。
    • 4. 发明申请
    • RADIALLY EXPANDABLE STENT
    • 放射性可扩展的
    • WO9915108A2
    • 1999-04-01
    • PCT/US9819990
    • 1998-09-24
    • MED INST INCCOOK INC
    • BERRY DALE THERALD COY MBATES BRIAN LBOATMAN SCOTT EHOFFA MICHAEL CFEARNOT NEAL EVOORHEES WILLIAM D III
    • A61F2/00A61F2/06A61F2/84A61F2/90A61L31/02A61L31/18
    • A61F2/915A61F2/88A61F2/91A61F2002/91508A61F2002/91516A61F2002/91525A61F2002/91533A61F2002/91558A61F2002/91566A61F2002/91575A61F2002/91583A61F2230/0054A61F2250/0036A61F2250/0098A61L31/022A61L31/18
    • A radially expandable stent (10) made from a cannula or sheet of biocompatible material that includes at least one longitudinal segment (14) comprised of a series of laterally interconnected closed cells (13). Each closed cell of a longitudinal segment is defined laterally by a pair of longitudinal struts (15, 16) that are interconnected at each end by a circumferentially adjustable member (19, 20). When the stent is expanded using a balloon (47), the opposing circumferentially adjustable members deform to allow circumferential expansion of the longitudinal segment, while the length of the segment, as defined by the longitudinal struts, is maintained. Self-expanding versions of the stent utilize a nickel-titanium alloy. Adjacent longitudinal segments are joined by flexible interconnection segments (21) that permit the stent to bend laterally. The flexible interconnection segment is comprised of curvvilinear struts (22, 23) that form a series of serpentine bends (81) that distribute lateral bending forces. In a preferred embodiment, a short strut interconnects a longitudinal segment and adjacent interconnection segment. Each interconnection strut attaches to the longitudinal segment within a region (27) at the end (17) of a longitudinal strut (15) dividing two adjacent closed cells.
    • 一种由包括生物相容性材料的套管或片材制成的径向可扩张的支架(10),其包括由一系列横向互连的闭孔(13)构成的至少一个纵向段(14)。 纵向段的每个闭合单元由一对纵向支柱(15,16)侧向地限定,所述纵向支柱在每个端部由周向可调节构件(19,20)互连。 当使用球囊(47)扩张支架时,相对的周向可调部件变形以允许纵向段的周向膨胀,而由纵向支柱限定的段的长度被维持。 自扩张型支架采用镍钛合金。 相邻的纵向段通过柔性互连段(21)连接,允许支架横向弯曲。 柔性互连部分由弯曲的支柱(22,23)组成,其形成一系列分布横向弯曲力的蛇形弯曲部(81)。 在优选实施例中,短支柱将纵向段和相邻互连段互连。 每个互连支柱在分开两个相邻闭孔的纵向支柱(15)的端部(17)处的区域(27)内附接到纵向段。