公开(公告)号：US20140257086A1

公开(公告)日：2014-09-11

申请号：US13789868

申请日：2013-03-08

Applicant: MRI INTERVENTIONS, INC.

Inventor： Daniele Ghidoli ,  Kamal Vij

IPC: A61B5/055

CPC classification number: A61B5/055 ,  A61M25/0015 ,  G01R33/287 ,  G01R33/34084 ,  Y10T29/49016

Abstract: Intrabody MRI-compatible medical devices with a rigid stylet body with opposing distal and proximal ends with a wall enclosing at least one cavity extending therebetween. The stylet body has first and second laterally spaced apart and opposing external longitudinally extending recessed surfaces and at least one pair of transversely spaced apart apertures extending through the wall and at least one conductor having a length that extends through the cavity then exits the cavity to define at least one external loop extending between the distal end of the stylet body and the pair of transversely spaced apart apertures. First and second legs of each loop snugly abut a respective first and second recessed surface of the stylet body to thereby cooperate with the stylet body to define a substantially cylindrical shape. The at least one conductor with the at least one loop is configured to act as an MRI antenna.

Abstract translation: 具有刚性探针本体的体内MRI兼容的医疗装置，其具有相对的远端和近端，其中包围至少一个在其间延伸的腔的壁。 探针体具有第一和第二横向间隔开并且相对的外部纵向延伸的凹面和延伸穿过该壁的至少一对横向间隔开的孔，并且具有延伸穿过空腔的长度的至少一个导体然后离开空腔以限定 至少一个在探针体主体的远端和一对横向间隔开的孔之间延伸的外环。 每个环的第一和第二腿紧密地邻接探针体的相应的第一和第二凹入表面，从而与探针体配合以限定基本上圆柱形的形状。 具有至少一个环的至少一个导体被配置为用作MRI天线。

公开(公告)号：US20140046167A1

公开(公告)日：2014-02-13

申请号：US13772822

申请日：2013-02-21

Applicant: MRI INTERVENTIONS, INC.

Inventor： Kamal Vij ,  Peter Piferi ,  Richard James Kail

IPC: A61B5/00 ,  A61B5/055

CPC classification number: A61B5/7475 ,  A61B5/0046 ,  A61B5/055

Abstract: Fiber optic systems with an MR compatible mouse in an MR scanner room that connects to a fiber optic computer mouse interface that is attached to a fiber optic cable that connects to a USB port of a computer in the MR control room to allow the mouse in the MR scanner room to move a cursor on a monitor in communication with the computer in the control room of an MRI suite during an MRI guided surgical procedure. The fiber optic cable(s) can be routed though a conventional RF wall waveguide and avoids the need for additional holes in the penetration panel for connectors. The fiber optic systems can also include up converters and down converters for providing fiber optic video signals from cameras in the MR scanner room to display video signal on the monitor.

Abstract translation: 在MR扫描仪室中具有MR兼容鼠标的光纤系统，其连接到光纤计算机鼠标接口，该光纤连接到连​​接到MR控制室中的计算机的USB端口的光纤电缆，以允许鼠标在 MR扫描仪室在MRI指导手术过程中将光标移动到与MRI套件的控制室中的计算机通信的监视器上。 光纤电缆可以通过常规RF壁波导路由，并避免在用于连接器的穿透面板中需要额外的孔。 光纤系统还可以包括上变频器和下变频器，用于从MR扫描器室中的相机提供光纤视频信号，以在监视器上显示视频信号。

公开(公告)号：US10596353B2

公开(公告)日：2020-03-24

申请号：US15294013

申请日：2016-10-14

Applicant: MRI Interventions, Inc.

Inventor： Jesse Flores ,  Rajesh Pandey ,  Peter Piferi ,  Kamal Vij

IPC: A61M25/09

Abstract: A passive MRI-compatible guidewire includes an elongate, flexible tubular shaft, an elongate core wire of non-ferromagnetic material, and an elongate spring coil of non-ferromagnetic material axially surrounding the elongate core wire to form a distal end portion. The core wire includes opposite first and second end portions separated by an intermediate portion. The intermediate portion has a round cross-section, and the first and second end portions each have a non-round cross-section. The first end portion of the core wire resides within an inner lumen of the tubular shaft and is secured therewithin. The spring coil includes opposite first and second ends, and the spring coil second end is secured to the core wire second end portion via polymeric material that forms a rounded distal tip of the guidewire. The guidewire includes a plurality of spaced-apart, passive MRI-visible markers.

公开(公告)号：US08825133B2

公开(公告)日：2014-09-02

申请号：US13749351

申请日：2013-01-24

Applicant: MRI Interventions, Inc.

Inventor： Kimble L. Jenkins ,  Peter Piferi ,  Kamal Vij ,  Daniele Ghidoli ,  Jesse Flores ,  Parag V. Karmarkar ,  Rajesh Pandey

IPC: A61B5/05 ,  A61B5/00 ,  A61B5/06 ,  A61B18/18 ,  A61B5/053 ,  G01R33/28 ,  A61M5/00 ,  A61B5/042 ,  A61B5/055 ,  A61B18/02 ,  A61M25/06 ,  A61B19/00 ,  A61M25/00 ,  A61M29/00 ,  A61M25/01 ,  A61M25/09

CPC classification number: A61B5/062 ,  A61B5/0044 ,  A61B5/042 ,  A61B5/0422 ,  A61B5/053 ,  A61B5/055 ,  A61B5/065 ,  A61B5/415 ,  A61B5/418 ,  A61B18/02 ,  A61B18/18 ,  A61B34/10 ,  A61B34/20 ,  A61B2090/365 ,  A61B2090/374 ,  A61B2090/3954 ,  A61M5/00 ,  A61M25/01 ,  A61M25/0127 ,  A61M29/00 ,  A61M2025/0089 ,  A61M2025/0166 ,  A61M2025/0681 ,  A61M2025/09175 ,  G01R33/286 ,  G01R33/287

Abstract: An MRI-compatible catheter that reduces localized heating due to MR scanner-induced currents includes an elongated flexible shaft having a distal end portion and an opposite proximal end portion. A handle is attached to the proximal end portion and includes an electrical connector interface configured to be in electrical communication with an MRI scanner. One or more RF tracking coils are positioned adjacent the distal end portion of the shaft. Each RF tracking coil includes a conductive lead, such as a coaxial cable, that extends between the RF tracking coil and the electrical connector interface and electrically connects the RF tracking coil to an MRI scanner. In some embodiments of the present invention, the conductive lead has a length sufficient to define an odd harmonic/multiple of a quarter wavelength of the operational frequency of the MRI Scanner, and/or includes a series of pre-formed back and forth segments along its length.

Abstract translation: 减少由于MR扫描器感应电流引起的局部加热的MRI兼容导管包括具有远端部分和相对近端部分的细长柔性轴。 手柄附接到近端部分并且包括被配置为与MRI扫描仪电连通的电连接器接口。 一个或多个RF跟踪线圈定位在轴的远端部分附近。 每个RF跟踪线圈包括在RF跟踪线圈和电连接器接口之间延伸的导电引线，例如同轴电缆，并将RF跟踪线圈电连接到MRI扫描器。 在本发明的一些实施例中，导电引线具有足以限定MRI扫描器的工作频率的四分之一波长的奇次谐波/倍数的长度，和/或包括一系列预先形成的前后段 它的长度。

公开(公告)号：US20130116543A1

公开(公告)日：2013-05-09

申请号：US13723612

申请日：2012-12-21

Applicant: MRI Interventions, Inc.

Inventor： Kimble L. Jenkins ,  Peter Piferi ,  Kamal Vij

IPC: A61B5/06 ,  A61M29/00

CPC classification number: A61B5/062 ,  A61B5/0044 ,  A61B5/042 ,  A61B5/0422 ,  A61B5/053 ,  A61B5/055 ,  A61B5/065 ,  A61B5/415 ,  A61B5/418 ,  A61B18/02 ,  A61B18/18 ,  A61B34/10 ,  A61B34/20 ,  A61B2090/365 ,  A61B2090/374 ,  A61B2090/3954 ,  A61M5/00 ,  A61M25/01 ,  A61M25/0127 ,  A61M29/00 ,  A61M2025/0089 ,  A61M2025/0166 ,  A61M2025/0681 ,  A61M2025/09175 ,  G01R33/286 ,  G01R33/287

Abstract: An MRI-guided medical device includes an elongated sheath, an elongated dilator, and an elongated needle. The sheath has a distal end, an opposite proximal end, and a central lumen extending between the proximal and distal ends. The sheath comprises MRI-compatible material and includes a tracking member located adjacent to the sheath distal end that is visible in an MRI image. The dilator comprises MRI-compatible material and is movably disposed within the sheath lumen. A distal end of the dilator is configured to extend outwardly from the sheath distal end and dilator includes at least one tracking member that is visible in an MRI image. The needle is movably disposed within the dilator lumen and is movable between stored and operative positions relative to the dilator. An RF shield may be coaxially disposed within the elongated sheath so as to surround a portion of the sheath central lumen.

Abstract translation: MRI引导的医疗装置包括细长护套，细长扩张器和细长针头。 鞘具有远端，相对的近端和在近端和远端之间延伸的中心腔。 护套包括与MRI相容的材料，并且包括位于MRI图像中可见的护套远端附近的跟踪构件。 扩张器包括与MRI相容的材料，并且可移动地设置在鞘腔内。 扩张器的远端构造成从护套远端向外延伸，并且扩张器包括在MRI图像中可见的至少一个跟踪构件。 针可移动地设置在扩张器腔内，并且可在相对于扩张器的存储和操作位置之间移动。 RF屏蔽件可以同轴地设置在细长护套内，以便围绕护套中心腔的一部分。