Push-coil steering mechanism
    12.
    发明申请
    Push-coil steering mechanism 审中-公开
    推挽转向机构

    公开(公告)号:US20150290429A1

    公开(公告)日:2015-10-15

    申请号:US14692368

    申请日:2015-04-21

    Inventor: Troy T. Tegg

    CPC classification number: A61M25/0147 A61B1/00133 A61M25/0136 A61M2025/015

    Abstract: A handle assembly is provided for use in navigating a deformable shaft within a body. The assembly includes a first guide member defining first and second linear channels and a second guide member configured for rotation relative to the first guide member. First and second connectors are disposed within, and movable within, the first and second linear channels along first and second parallel axes, respectively, and are configured for coupling to first and second steering wires, respectively. The assembly includes means, such as a flexible coupling connected to the second guide member and the connectors, for translating rotation of the second guide member into linear movement of the first connector in a first axial direction and linear movement of the second connector in a second axial direction, opposite the first axial direction such that the first and second steering wires move in opposite directions.

    Abstract translation: 手柄组件设置用于导航体内的可变形轴。 组件包括限定第一和第二线性通道的第一引导构件和被配置为相对于第一引导构件旋转的第二引导构件。 第一和第二连接器分别设置在沿着第一和第二平行轴线的第一和第二线性通道内并在其中可移动,并且分别构造成用于联接到第一和第二操纵线。 组件包括诸如连接到第二引导构件和连接器的柔性联接器的装置,用于将第二引导构件的旋转在第一轴向方向上平移到第一连接器的线性运动,并且第二连接器在第二轴线方向上的线性运动 轴向,与第一轴向方向相反,使得第一和第二操纵线沿相反方向移动。

    Catheter shaft and method of manufacture

    公开(公告)号:US11376397B2

    公开(公告)日:2022-07-05

    申请号:US16661145

    申请日:2019-10-23

    Abstract: A method of manufacturing a catheter assembly generally includes providing a catheter shaft having an outer layer and an inner reinforcing layer; removing at least a portion of the outer layer from a length of the distal end of the catheter shaft in order to expose a distal segment thereof; providing an inner jacket segment; axially engaging the inner jacket segment with an interior surface of the distal segment of the catheter shaft; providing an outer jacket segment around at least the exposed exterior region of the distal segment of the catheter shaft; and bonding the distal segment of the catheter shaft to the inner jacket segment and the outer jacket segment.

    CATHETER SYSTEMS
    15.
    发明申请

    公开(公告)号:US20210275806A1

    公开(公告)日:2021-09-09

    申请号:US17227924

    申请日:2021-04-12

    Abstract: Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.

    Shaft and handle for a catheter with independently-deflectable segments

    公开(公告)号:US10898685B2

    公开(公告)日:2021-01-26

    申请号:US15846710

    申请日:2017-12-19

    Inventor: Troy T. Tegg

    Abstract: An elongate medical device with independently-deflectable segments and a handle for manually deflecting those segments can include a shaft having a distal segment and proximal segment, at least one proximal segment deflection wire adapted to deflect the proximal segment, at least one distal segment deflection wire adapted to deflect the distal segment independent of the proximal segment, and a handle portion. The handle portion may comprise a first manual actuation mechanism coupled to the at least one distal segment deflection wire and a second manual actuation mechanism coupled to the at least one proximal segment deflection wire. Actuation of the first manual actuation mechanism may impart a tensile force on the distal segment deflection wire to cause the distal segment to deflect, and actuation of the second manual actuation mechanism may impart a tensile force on the proximal segment to cause the proximal segment to deflect.

    Device for reducing axial shortening of catheter or sheath due to repeated deflection

    公开(公告)号:US10675444B2

    公开(公告)日:2020-06-09

    申请号:US15342539

    申请日:2016-11-03

    Abstract: A deflectable medical device incorporates a strut that is configured to reduce or eliminate axial shortening of the deflectable portion of the medical device, for example, the deflectable distal end portion of a catheter or access sheath. The strut may is coaxially disposed in the medical device in the section that is contemplated to undergo the repeated deflection. The strut provides improved column strength and axial restoration. The strut may be stent-like device, an elongate device having opposing ends coupled by a connecting lattice involving a plurality of helical connecting elements or a tube having a plurality of circumferentially-extending slots arranged in longitudinally-extending rows.

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