利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

18 条记录 (耗时 0.054 秒)

    Catheter tubing with improved stress-strain characteristics
    4.
    发明授权
    Catheter tubing with improved stress-strain characteristics 有权
    导管具有改善的应力 - 应变特性

    公开(公告)号：US07228878B2

    公开(公告)日：2007-06-12

    申请号：US10309466

    申请日：2002-12-04

    申请人： John Jianhua Chen ,  Douglas A. Devens, Jr. ,  Paul James Miller ,  Edward Parsonage

    发明人： John Jianhua Chen ,  Douglas A. Devens, Jr. ,  Paul James Miller ,  Edward Parsonage

    IPC分类号： F16L9/14 ,  A61M25/00

    CPC分类号： A61M25/005 ,  A61L29/04 ,  A61L29/14 ,  A61M25/0054 ,  Y10T428/1393

    摘要： A medical tubing is disclosed which includes a first material extending between proximal and distal ends of the tubing and which defines a lumen of the tubing. The tubing also includes a second material extending between at least portion of the distance between the proximal and distal ends of the tubing and that is embedded in the first material. The second material is fractured. The first material is flexible and the second material is relatively rigid and brittle and the two materials combined to provide a medical tubing that exhibits strain softening behavior.

    摘要翻译： 公开了一种医疗管，其包括在管的近端和远端之间延伸并且限定管的内腔的第一材料。 管道还包括在管道的近端和远端之间的距离的至少部分之间延伸并且嵌入在第一材料中的第二材料。 第二种材料断裂。 第一种材料是柔性的，第二种材料是相对刚性和脆性的，并且两种材料组合以提供显示应变软化行为的医用管。

    Multilayer medical devices
    5.
    发明授权
    Multilayer medical devices 有权
    多层医疗器械

    公开(公告)号：US07815628B2

    公开(公告)日：2010-10-19

    申请号：US12346597

    申请日：2008-12-30

    申请人： Douglas A. Devens, Jr.

    发明人： Douglas A. Devens, Jr.

    IPC分类号： A61M25/00

    CPC分类号： A61M25/0009 ,  A61M25/0045

    摘要： A medical device includes at least four layers including a first material and a second material having a different stiffness than a stiffness of the first material, wherein at least one of the layers varies in thickness axially along the device.

    摘要翻译： 医疗装置包括至少四层，包括第一材料和具有与第一材料的刚度不同的刚度的第二材料，其中至少一层的厚度沿着装置轴向变化。

    Multilayer coextrusion die and method
    6.
    发明授权
    Multilayer coextrusion die and method 失效
    多层共挤出模具及方法

    公开(公告)号：US06837698B2

    公开(公告)日：2005-01-04

    申请号：US10028052

    申请日：2001-12-19

    申请人： Robert M. Floyd ,  Douglas A. Devens, Jr.

    发明人： Robert M. Floyd ,  Douglas A. Devens, Jr.

    IPC分类号： B29C47/04 ,  B29C47/06 ,  B29C47/58 ,  B29L7/00

    CPC分类号： B29C47/145 ,  B29C47/0004 ,  B29C47/0021 ,  B29C47/061 ,  B29C47/065 ,  B29C47/56 ,  B29C47/705 ,  B29K2105/12

    摘要： The invention is an extrusion device comprising an interleaving block portion. The interleaving block portion includes at least two first chambers, each first chamber including a width, a length, a height, and an input aperture. The length dimension of the first chambers are generally parallel. An output aperture is included in each first chamber, the output aperture is wider and shorter in height than the input aperture. A series of first distances are defined between the input aperture to points along the output aperture. A die portion is included in the extrusion device. The die portion has a laminate chamber having a height dimension. The height dimension of the laminate is disposed generally perpendicular to the length dimension of the first chambers. An output is disposed at one end of the height dimension. The laminate chamber is disposed so as to be in communication with the output apertures of the parallel first chambers.

    Disposable sheath with replaceable console probes for cryosurgery
    7.
    发明授权
    Disposable sheath with replaceable console probes for cryosurgery 失效
    一次性护套，可更换控制台探头，用于冷冻手术

    公开(公告)号：US08298221B2

    公开(公告)日：2012-10-30

    申请号：US11942219

    申请日：2007-11-19

    申请人： David W. Vancelette ,  Douglas A. Devens, Jr.

    发明人： David W. Vancelette ,  Douglas A. Devens, Jr.

    IPC分类号： A61B18/18

    CPC分类号： A61B18/02 ,  A61B2018/0212 ,  A61B2018/0231

    摘要： A sheath for use with a cryoprobe in a cryosurgical procedure can have an opening at its proximal end configured to be inserted over a tip portion of a cryoprobe. The sheath can be connected to the cryoprobe with an end connector. Sheath can have a tip located at its distal that can have a trocar configuration for tissue penetration. A cylindrical section located inwardly from the tip can have a spiral groove defined on an exterior surface. At least one wire can be disposed within the groove so as to fit within the outer perimeter of the sheath. Wires disposed in grooves can include heating elements and temperature sensing elements. Sheath can further include a graduated catheter located inwardly from the cylindrical section and a handle located inwardly from the graduated catheter.

    摘要翻译： 在冷冻手术过程中与冷冻探针一起使用的护套可以在其近端处具有开口，其构造成插入冷冻探针的尖端部分上。 护套可以用端接头连接到冷冻探针。 护套可以具有位于其远端的尖端，其可以具有用于组织穿透的套管针配置。 从尖端向内定位的圆柱形部分可以具有限定在外表面上的螺旋槽。 至少一根线可以设置在槽内，以便装配在护套的外周边内。 设置在凹槽中的电线可以包括加热元件和温度感测元件。 护套还可以包括从圆柱形部分向内定位的刻度导管和位于刻度导管内侧的手柄。

    Cryoprobe with coaxial chambers
    8.
    发明授权
    Cryoprobe with coaxial chambers 失效
    带同轴室的冷冻探头

    公开(公告)号：US08298220B2

    公开(公告)日：2012-10-30

    申请号：US11940665

    申请日：2007-11-15

    申请人： Douglas A. Devens, Jr. ,  David W. Vancelette ,  Michael W. V. Perkins

    发明人： Douglas A. Devens, Jr. ,  David W. Vancelette ,  Michael W. V. Perkins

    IPC分类号： A61B18/18

    CPC分类号： A61B18/02

    摘要： The present disclosure is directed to a cryoprobe capable of improving the cooling power of a cryosurgical system. A representative cryoprobe can comprise an inner cooling chamber and a radial chamber, positioned between the inner cooling chamber and an exterior wall of the cryoprobe. Preferably, the radial chamber is formed to have a low thermal conductivity so as to significantly reduce the transfer of heat between the body and the refrigerant in the inner chamber during a cryosurgical procedure. The radial chamber can be fabricated such that a vacuum can be applied to the radial chamber to further reduce heat transfer between the body and the inner cooling chamber. The radial chamber extends partially along the length of the cryoprobe such that inner cooling chamber is in direct thermal contact with the exterior wall at a cryoprobe tip.

    摘要翻译： 本公开涉及能够改善冷冻手术系统的冷却功率的冷冻探针。 代表性的冷冻探针可以包括位于内部冷却室和冷冻探针的外壁之间的内部冷却室和径向室。 优选地，径向室形成为具有低导热性，以便在冷冻手术过程期间显着地减少体内和内腔中的制冷剂之间的热传递。 可以制造径向室，使得可以向径向室施加真空以进一步减少主体和内部冷却室之间的热传递。 径向室沿着冷冻探针的长度部分延伸，使得内部冷却室在冷冻探针尖处与外壁直接热接触。

    Catheter shaft having distal support
    9.
    发明授权
    Catheter shaft having distal support 有权
    导管轴具有远端支撑

    公开(公告)号：US07491213B2

    公开(公告)日：2009-02-17

    申请号：US10757683

    申请日：2004-01-13

    申请人： Daniel Perreault ,  Douglas A. Devens, Jr.

    发明人： Daniel Perreault ,  Douglas A. Devens, Jr.

    IPC分类号： A61M29/00

    CPC分类号： A61M25/1006 ,  A61M25/1025 ,  A61M25/104 ,  A61M2025/0004 ,  A61M2025/0063 ,  A61M2025/0183

    摘要： A catheter comprising an inflatable balloon having a proximal end, a distal end, and an inflation cavity therebetween, a catheter shaft having the inflatable balloon affixed proximate a distal end thereof, the catheter shaft having an inflation lumen fluidly connected to the balloon inflation cavity. A guidewire lumen extends through the balloon cavity within a tubular member which is affixed to the inflatable balloon proximate the distal end. A reinforcing sleeve, having a proximal portion and a distal portion with a lumen extending therethrough, wherein the distal portion of the sleeve extends into the inflation cavity with at least a portion of the tubular member slidably disposed through the lumen thereof and the proximal portion is fixed relative to the catheter shaft and disposed in the catheter shaft inflation lumen.

    摘要翻译： 一种导管，包括具有近端，远端和其间的充气腔的可膨胀气囊，具有靠近其远端固定的可膨胀气囊的导管轴，所述导管轴具有流体连接到球囊充气腔的充气腔。 导丝管腔在管状构件内延伸穿过囊腔，该管状构件在远端附近固定到可膨胀气囊。 一种加强套筒，其具有近端部分和远端部分，其中内腔延伸穿过其中，其中套筒的远端部分延伸到膨胀腔中，管状构件的至少一部分可滑动地设置穿过其内腔，近端部分 相对于导管轴固定并且设置在导管轴膨胀腔中。