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    Substituted birefringent polyamide
    11.
    发明授权
    Substituted birefringent polyamide 失效
    取代双折射聚酰胺

    公开(公告)号：US4461886A

    公开(公告)日：1984-07-24

    申请号：US486800

    申请日：1983-04-20

    Applicant: Howard G. Rogers ,  Russell A. Gaudiana ,  Jeannette S. Manello ,  Ronald A. Sahatjian

    Inventor： Howard G. Rogers ,  Russell A. Gaudiana ,  Jeannette S. Manello ,  Ronald A. Sahatjian

    IPC: C08G69/26 ,  C08G69/32 ,  C08G69/12

    CPC classification number: C08G69/32 ,  C08G69/26

    Abstract: A class of polyamides comprising recurring units having certain substituted-biphenylene or substituted-stilbene radicals is disclosed. The substituted radicals include substituents so as to confer a non-coplanar molecular configuration and a substantially cylindrical distribution of electron density about the long axis of the recurring units and the chain-extended polymers including such radicals.Molecularly oriented polymers of the invention exhibit optically uniaxial properties. The highly birefringent polymers are suited to application in optical filter and other devices where a refractive and birefringent material is desired.

    Abstract translation: 公开了一类包含具有某些取代的亚联苯基或取代的二苯乙烯基团的重复单元的聚酰胺。 取代的基团包括取代基，以便赋予非共面分子构型，并且围绕重复单元的长轴和包含这种基团的扩链聚合物的电子密度基本上圆柱形的分布。 本发明的分子取向聚合物表现出光学单轴性质。 高双折射聚合物适用于需要折射和双折射材料的滤光器和其他器件。

    Medical device balloons containing thermoplastic elastomers
    16.
    发明授权
    Medical device balloons containing thermoplastic elastomers 有权
    包含热塑性弹性体的医疗装置气球

    公开(公告)号：US06896842B1

    公开(公告)日：2005-05-24

    申请号：US09557258

    申请日：2000-04-24

    Applicant: Bruce Hamilton ,  Ronald A. Sahatjian

    Inventor： Bruce Hamilton ,  Ronald A. Sahatjian

    IPC: A61F2/958 ,  A61L29/04 ,  A61M25/00 ,  B29D23/00

    CPC classification number: A61M25/1029 ,  A61L29/049 ,  A61M25/0045 ,  A61M25/1002 ,  A61M2025/1075 ,  Y10T428/1334 ,  Y10T428/1352 ,  Y10T428/139 ,  Y10T428/1393

    Abstract: A dilatation balloon and catheter for insertion into a bodily conduit. The catheter (10) includes shaft (12) and a dilatation balloon (24) at the distal end of the shaft. The balloon is inflated via a central lumen (14) in the shaft for delivery of a fluid inflation media. The balloon is fabricated from a combination of a thermoplastic elastomer (TPE), preferably an engineering thermoplastic elastomer (ETE), with a non-compliant structural polymeric material. The combination may be a blend of the non-compliant structural polymer and the TPE. Alternatively, the combination may be a layered balloon having, for example, a non-compliant structural polymer inner layer and a soft, abrasion resistant, elastomeric outer layer. Methods for fabricating the balloon from the combination of a TPE and a non-compliant structural polymer are also disclosed.

    Abstract translation: 用于插入身体导管的扩张球囊和导管。 导管（10）在轴的远端包括轴（12）和膨胀气球（24）。 气球通过轴中的中心腔（14）膨胀，用于输送流体充气介质。 气球由热塑性弹性体（TPE），优选工程热塑性弹性体（ETE）与非柔顺结构聚合材料的组合制成。 该组合可以是不顺应结构聚合物和TPE的混合物。 或者，组合可以是具有例如不顺应结构聚合物内层和柔软，耐磨损的弹性体外层的分层气囊。 还公开了从TPE和不顺应结构聚合物的组合制造球囊的方法。

    Stent placement device with medication dispenser and method
    18.
    发明授权
    Stent placement device with medication dispenser and method 失效
    支架放置装置与药物分配器和方法

    公开(公告)号：US5928247A

    公开(公告)日：1999-07-27

    申请号：US999175

    申请日：1997-12-29

    Applicant: James J. Barry ,  Peter M. Nicholas ,  Ronald A. Sahatjian

    Inventor： James J. Barry ,  Peter M. Nicholas ,  Ronald A. Sahatjian

    IPC: A61F2/82 ,  A61F2/00 ,  A61F2/06 ,  A61F2/84 ,  A61M25/00 ,  A61M25/10 ,  A61F11/00

    CPC classification number: A61F2/958 ,  A61M25/0023 ,  A61M25/1018 ,  A61M25/1029 ,  A61F2250/0067 ,  A61M2025/0036 ,  A61M2025/004 ,  A61M2025/105 ,  A61M2025/1086 ,  A61M25/10 ,  A61M25/1027

    Abstract: An inflatable medical device and method for the placement of a stent in a body passageway by means of a two stage expansion of the stent and for the delivery of medications to precise location in the passageway. The device includes a catheter shaft (14) having a plurality of lumens (13, 22, 28) disposed therein. The catheter shaft has a distal end adapted to be disposed within a vascular passageway. An inflatable balloon is defined by a generally cylindrical wall and is adapted to receive inflation fluids. The balloon is disposed on the distal end of the shaft. An array of circumferentially arranged inflation conduits (40) is disposed in the wall. The conduits (40) are spaced from each other within the wall of the balloon whereby to form a annular array. An array of medication delivering conduits (25) can be disposed within the wall of the balloon. These conduits are adapted to deliver medications to predetermined locations within the body passageway being treated. A stent (30) is removably disposed around the exterior of the wall of the balloon and is expandable radially outwardly from a narrow insertion diameter to a larger second diameter by the expansion of the balloon (16) and then to a still larger third diameter by inflation of the inflation conduits (40) whereby to expand the body passageway and seat the stent.

    Abstract translation: 一种可膨胀的医疗装置和方法，用于通过支架的两级膨胀以及将药物输送到通道中的精确位置来将支架放置在身体通道中。 该装置包括具有设置在其中的多个管腔（13,22,28）的导管轴（14）。 导管轴具有适于设置在血管通路内的远端。 可充气气囊由大致圆柱形的壁限定，适于接收充气流体。 气球设置在轴的远端。 周向布置的充气管道（40）的阵列设置在壁中。 导管（40）在球囊的壁内彼此间隔开，从而形成环形阵列。 一组药物输送管道（25）可以设置在气囊的壁内。 这些导管适于将药物递送至正在治疗的身体通路内的预定位置。 支架（30）可移除地设置在球囊的壁的外部周围，并且通过球囊（16）的膨胀而从狭窄的插入直径径向向外扩张到更大的第二直径，然后通过 膨胀管道（40）的膨胀，从而扩张身体通道并对支架进行安置。

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