利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

181 条记录 (耗时 0.039 秒)

    Catheter introducer sheath assembly
    1.
    发明授权
    Catheter introducer sheath assembly 失效
    导管导管鞘组件

    公开(公告)号：US5397310A

    公开(公告)日：1995-03-14

    申请号：US24789

    申请日：1993-03-01

    申请人： Michael S. H. Chu ,  Yem Chin ,  Fozan O. El-Nounou ,  James B. Daigle ,  Andrew H. Cragg

    发明人： Michael S. H. Chu ,  Yem Chin ,  Fozan O. El-Nounou ,  James B. Daigle ,  Andrew H. Cragg

    IPC分类号： A61M39/06 ,  A61M5/178

    CPC分类号： A61M39/0613 ,  A61M2025/09125

    摘要： A catheter introducer sheath assembly, for introduction into a body passage of a catheter containing a filter comprises a flexible introducer sheath joined to the distal end of a closure device forming a through-passage with a diameter sufficient to pass the catheter therethrough. The closure device has a resilient member in the through-passage and two rotatable body portions, one stationary with respect to the resilient member, and the other rotatable about the axis of the resilient member with an internal cam circumferentially spaced around the axis. A compression member positioned radially in an extending aperture makes contact with both the resilient member and the cam surface to vary the through-passage allowing the operator to manually control the passage of the device. The sheath assembly receives a cathetory guidewire that slides through and extends beyond the closure device and the sheath. In another aspect, the combination sheath assembly and closure device forms a catheter introducer kit constructed to receive a stabilizer and a catheter of sufficiently large diameter to house a vena cava filter, and to pass the filter through the closure device and sheath for placement in the body by means of a dilator attached to the end of the sheath to facilitate guiding the filter to the desired position for its release from the sheath. The closure device is adjustable to prevent any backflow of fluid such as blood from the assembly during the filter placement procedure.

    摘要翻译： 用于引入到包含过滤器的导管的主体通道中的导管引导器套组件包括接合到封闭装置的远端的柔性引导器护套，形成具有足以使导管穿过的直径的通道。 闭合装置在通道中具有弹性构件，并且具有两个可旋转主体部分，一个相对于弹性构件固定，另一个可绕着该弹性构件的轴线旋转，并具有围绕该轴线周向间隔开的内部凸轮。 径向放置在延伸孔中的压缩构件与弹性构件和凸轮表面接触以改变穿通通道，允许操作者手动地控制装置的通过。 护套组件接收滑动穿过并延伸超过封闭装置和护套的导管导丝。 在另一方面，组合护套组件和闭合装置形成导管导引器套件，其被构造成接收足够大直径的稳定器和导管以容纳腔静脉过滤器，并且使过滤器通过闭合装置和护套以放置在 通过连接到护套的端部的扩张器，以便于将过滤器引导到期望的位置以使其从护套释放。 闭合装置是可调节的，以防止在过滤器放置过程期间任何来自组件的血液（例如血液）的回流。

    Device and method for severing lesions
    4.
    发明授权
    Device and method for severing lesions 有权
    用于切断病变的装置和方法

    公开(公告)号：US06315782B1

    公开(公告)日：2001-11-13

    申请号：US09351292

    申请日：1999-07-12

    申请人： Michael S. H. Chu ,  Yem Chin

    发明人： Michael S. H. Chu ,  Yem Chin

    IPC分类号： A61B1712

    CPC分类号： A61B17/32056 ,  A61B17/12013 ,  A61B18/14 ,  A61B2017/12018 ,  A61B2017/32004 ,  A61B2018/00291 ,  A61B2018/1407

    摘要： A system for severing lesions within a living body includes a housing defining an interior tissue receiving chamber is coupled to the distal end of an endoscope. At least one snare extends around the ligating band supporting surface so that, when at least one ligating band is received around the ligating band supporting surface, drawing the at least one snare off the ligating band supporting surface releases a corresponding ligating band from the ligating band supporting surface. In addition, a method for severing tissue comprises the steps of introducing into the body an endoscope to which a housing defining an interior tissue receiving chamber is coupled, wherein at least one snare and at least one ligating band extend around the ligating band supporting surface and advancing the distal end of the endoscope into the body until the housing is located adjacent to a first portion of tissue to be severed. The first portion of tissue is then drawn into the interior chamber and a snare is drawn off the distal end of the housing to release a corresponding ligating band from the ligating band supporting surface so that the ligating band and the snare encircle the first portion of tissue.

    摘要翻译： 用于切断生物体内的病变的系统包括限定内部组织接收室的壳体，其联接到内窥镜的远端。 至少一个圈套围绕结扎带支撑表面延伸，使得当至少一个结扎带被接纳在结扎带支撑表面周围时，将结扎带支撑表面上的至少一个圈套从连接带释放相应的结扎带 支撑面。 另外，用于切断组织的方法包括以下步骤：将限定内部组织接收室的壳体连接到内部的内窥镜，其中至少一个圈套和至少一个结扎带围绕结扎带支撑表面延伸， 将内窥镜的远端推进到体内，直到外壳位于与被切断的组织的第一部分相邻的位置。 然后将组织的第一部分拉入内部腔室，并且将球笼从壳体的远端排出以从结扎带支撑表面释放相应的结扎带，使得结扎带和圈套环绕组织的第一部分 。

    Coaxial needle and severing snare
    5.
    发明授权
    Coaxial needle and severing snare 有权
    同轴针和切断圈套

    公开(公告)号：US06210416B1

    公开(公告)日：2001-04-03

    申请号：US09357105

    申请日：1999-07-19

    申请人： Michael S. H. Chu ,  Yem Chin

    发明人： Michael S. H. Chu ,  Yem Chin

    IPC分类号： A61B1724

    CPC分类号： A61B17/32056 ,  A61B17/3478 ,  A61B18/1477 ,  A61B2017/00269 ,  A61B2017/00349 ,  A61B2017/00353 ,  A61B2017/306 ,  A61B2018/1407 ,  A61B2018/1425

    摘要： A device for treating a lesion comprises a sheath extending from a proximal end which, in an operative position, is located outside the body, to a distal end which, in the operative position is located within the body. A needle extending through the sheath has a tissue piercing distal tip and a central lumen extending through the needle from a proximal port to a distal opening formed in the distal tip and a needle actuator is provided for moving the needle between a retracted position in which the distal tip is received within the sheath to an injection position in which the distal tip extends distally beyond a distal end of the sheath. A snare extends within the lumen to a loop formed in a distal end of the snare and a snare actuator is provided for moving the snare between a covered position in which the loop is received within the lumen and an extended position in which the loop extends distally from the lumen beyond the distal tip.

    摘要翻译： 用于治疗病变的装置包括护套，所述护套从位于身体外部的操作位置的近端延伸到在所述操作位置位于所述主体内的远端。 延伸穿过护套的针头具有组织刺穿的远侧末端和中心管腔，该中心管腔从近端口延伸穿过远端开口，远端开口形成在远侧末端，并且提供针致动器用于在缩回位置之间移动针头， 远侧末端被容纳在护套内到注射位置，其中远侧末端向远侧延伸超过护套的远端。 管腔在管腔内延伸到形成在圈套的远端中的环，并且提供圈套致动器用于将圈套移动到环内容纳在管腔内的覆盖位置和延伸位置，其中环延伸到其中 从内腔超过远端。

    Multiple ligating band dispenser for ligating instruments
    6.
    发明授权
    Multiple ligating band dispenser for ligating instruments 失效
    用于结扎仪器的多个结扎带分配器

    公开(公告)号：US5269789A

    公开(公告)日：1993-12-14

    申请号：US960081

    申请日：1992-10-09

    申请人： Yem Chin ,  Michael S. H. Chu

    发明人： Yem Chin ,  Michael S. H. Chu

    IPC分类号： A61B17/12 ,  A61B17/22 ,  A61B17/34

    CPC分类号： A61B17/12013 ,  A61B17/3478 ,  A61B2017/12018

    摘要： A ligating band dispenser for dispensing a plurality of ligating bands individually during a sequence of operations for a ligating instrument. Interfitted housing and piston segments support a plurality of ligating bands at axially spaced locations. Retraction of the piston segment dispenses on ligating band and shifts the remaining ligating bands distally and axially. After retraction, the piston is biased forward so a next retraction dispenses another ligating band.

    摘要翻译： 一种结扎带分配器，用于在用于结扎器械的一系列操作期间单独分配多个结扎带。 插入的壳体和活塞段在轴向间隔开的位置处支撑多个连接带。 活塞节段的缩回分配在结扎带上，并使其余的结扎带远离和轴向移动。 在收缩之后，活塞向前偏移，所以下一个收缩分配另一个结扎带。

    Controlled deployment of a medical device
    7.
    发明授权
    Controlled deployment of a medical device 失效
    医疗器械的受控部署

    公开(公告)号：US06296660B1

    公开(公告)日：2001-10-02

    申请号：US09048953

    申请日：1998-03-26

    申请人： George T. Roberts ,  Kathleen L. Hess ,  Sepideh H. Nott ,  Michael S. H. Chu ,  Yem Chin

    发明人： George T. Roberts ,  Kathleen L. Hess ,  Sepideh H. Nott ,  Michael S. H. Chu ,  Yem Chin

    IPC分类号： A61F200

    CPC分类号： A61F2/958 ,  A61M25/10 ,  A61M25/1002 ,  A61M2025/1059 ,  A61M2025/1068 ,  A61M2025/1081 ,  A61M2210/125

    摘要： A prosthesis delivery system having a balloon catheter with an inflatable balloon on its exterior. The balloon is inflatable by injection of fluid through a lumen in the catheter and the balloon is initially partially constrained against inflation by a constraint. A tubular prosthesis is disposed on the catheter over at least a portion of the balloon and a portion of the constraint. The tubular prosthesis has a contracted condition and an expanded condition. The tubular prosthesis is initially disposed on the catheter in the contracted condition. Further, a balloon catheter includes a constraint so that the balloon may be sequentially inflated for dilatation purposes such as in a valvuloplasty operation.

    摘要翻译： 一种假体递送系统，其具有在其外部具有可充气气囊的气囊导管。 通过在导管中的内腔注入流体来使球囊充气，并且球囊初始部分地通过约束来限制抵抗充气。 管状假体在气囊的至少一部分和约束的一部分上设置在导管上。 管状假体具有收缩状态和扩张状态。 管状假体最初在收缩状态下设置在导管上。 此外，球囊导管包括约束，使得球囊可以顺序地膨胀以用于扩张目的，例如在瓣膜成形术操作中。

    Biopsy needle instrument for storing multiple specimens
    10.
    发明授权
    Biopsy needle instrument for storing multiple specimens 失效
    活检针器械用于储存多个标本

    公开(公告)号：US5195533A

    公开(公告)日：1993-03-23

    申请号：US881028

    申请日：1992-05-08

    申请人： Yem Chin ,  Michael S. H. Chu

    发明人： Yem Chin ,  Michael S. H. Chu

    IPC分类号： A61B10/00 ,  A61B10/02 ,  A61B19/00

    CPC分类号： A61B10/0275 ,  A61B2010/0208 ,  A61B90/39

    摘要： A biopsy needle instrument for capturing a plurality of sequentially biopsied, discrete specimens. The instrument includes a housing, an axially elongated stylet and a cannula coaxially disposed about the stylet. The stylet and cannula have distal and proximal ends and extend from the housing. The stylet and cannula can move relative to each other and to the housing between retracted and extended positions. The stylet includes a side-facing notch adjacent the distal end of the stylet having an axial length that is greater than a predetermined specimen length. Portions of the cannula adjacent the distal end overlie the side-facing notch when the cannula and stylet are both retracted. When the stylet is extended and the cannula is retracted, a distal portion of the notch having length corresponding to the predetermined specimen length is disposed for facilitating the prolapse of tissue into the notch.

    摘要翻译： 一种活检针器械，用于捕获多个依次活检的离散样本。 仪器包括壳体，轴向细长的探针和围绕探针同轴设置的插管。 探针和套管具有远端和近端并从壳体延伸。 探针和套管可以相对于彼此移动并且在缩回位置和伸出位置之间移动到壳体。 探针包括邻近探针的远端的侧面凹口，其具有大于预定样本长度的轴向长度。 当插管和通丝管都缩回时，邻近远端的插管的部分覆盖面向侧面的凹口。 当探针延长并且套管缩回时，设置具有对应于预定样本长度的长度的凹口的远端部分，以便于组织脱落到凹口中。