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21.发明授权
公开(公告)号：US5931818A
公开(公告)日：1999-08-03
申请号：US969165
申请日：1997-11-12
申请人： Peter R. Werp , Rogers C. Ritter , Walter M. Blume
发明人： Peter R. Werp , Rogers C. Ritter , Walter M. Blume
CPC分类号： A61M25/0127 , A61B34/73 , A61B90/10 , A61M25/01 , A61B2034/732 , A61B2090/374 , A61B6/12
摘要： A catheter and magnet combination adapted for intraparenchymal positioning of the catheter in the body with a magnetic field. The catheter has a proximal and distal ends and a lumen therebetween. A magnet is disposed in the distal end of the lumen so that the distal end of the catheter can be positioned within the body with the aid of an externally applied magnetic field. A tether is attached to the magnet and extends through the lumen and out the proximal end so that the magnet can be removed from the catheter through the lumen once the distal end of the catheter is properly positioned. In one embodiment of the invention, the tether is sufficiently stiff to be able to push the catheter through the tissue. With this embodiment, the magnetic field orients the magnet and thus the tip of the catheter, and some or all of the force for moving the catheter is applied via the tether.
摘要翻译： 一种导管和磁体组合，其适于用导管在体内实时磁场定位。 导管具有近端和远端以及其间的内腔。 磁体设置在内腔的远端，使得导管的远端借助于外部施加的磁场可以位于身体内。 系绳附接到磁体并延伸穿过内腔并离开近端，使得一旦导管的远端被适当定位，磁体可以通过内腔从导管中移除。 在本发明的一个实施例中，系链足够坚固以能够推动导管穿过组织。 利用该实施例，使磁体和导管的尖端定向的磁场以及用于移动导管的力的一些或全部通过系绳施加。
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公开(公告)号：US06677752B1
公开(公告)日：2004-01-13
申请号：US09716621
申请日：2000-11-20
IPC分类号： G01V300
CPC分类号： G01R33/421
摘要： A shield for controlling a magnetic field emanating from a magnetic in a magnetic medical treatment instrument has the form of a circular shaped band with opposite open ends and a center axis extending perpendicularly between the open ends. The magnet in the magnetic medical treatment instrument moves about an operating table having a surface upon which a patient being operated on by a physician reposes. The circular shaped shield surrounds the magnet and is spaced away from the magnet in a manner to allow the physician to enter the interior of the band and operate on the patient. The band has opposite first and second parallel planar portions. The top surface of the operating table and the first and second planar portions of the band are parallel to each other. The operating table has a length and a width, and the length of the operating table is parallel to the center axis of the band.
摘要翻译： 用于控制磁性医疗器械中的磁场发出的磁场的屏蔽件具有相对开口端的圆形带状物和在开口端之间垂直延伸的中心轴线的形式。 磁性医疗器械中的磁体围绕具有医生操作的患者所在的表面的操作台移动。 圆形屏蔽围绕磁体并且以允许医师进入带内部并对患者进行操作的方式与磁体间隔开。 带具有相对的第一和第二平行平面部分。 手术台的上表面和带的第一和第二平面部分彼此平行。 操作台具有长度和宽度，操作台的长度平行于带的中心轴。
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公开(公告)号：US07774046B2
公开(公告)日：2010-08-10
申请号：US10799358
申请日：2004-03-12
IPC分类号： A61B5/05
CPC分类号： A61B90/10 , A61B6/12 , A61B34/70 , A61B34/73 , A61B90/361 , A61B2034/732
摘要： A magnetic navigation system for orienting a magnetically responsive device in an operating region in a subject has at least two magnet units and a support for mounting the at least two magnet units for movement relative to the subject, the support supporting the at least two magnet units adjacent the operating region in the subject at locations to apply a magnetic field to the operating region. Each magnet unit includes sing a magnet and a positioner for selectively changing the position of the magnet. The system also includes a control for operating the positioners of each magnet unit to selectively change the positions of the magnets to maintain the magnetic field direction applied to the operating region by the magnets as the locations of the magnet units relative to the operating region change. The system is adapted for implementing a method of navigating according to the present invention in which the magnets in the magnet units are selectively rotated and pivoted to maintain the appropriate magnetic field direction projected by the magnets to maintain the device direction as the magnet units move on the support about the operating region.
摘要翻译： 用于使受检者的操作区域中的磁响应装置定向的磁导航系统具有至少两个磁体单元和用于安装所述至少两个磁体单元以相对于被摄体移动的支撑件，所述支撑件支撑所述至少两个磁体单元 邻近被检体的操作区域，以对操作区域施加磁场。 每个磁体单元包括磁铁和用于选择性地改变磁体位置的定位器。 该系统还包括用于操作每个磁体单元的定位器的控制器，以便随着磁体单元相对于操作区域的位置的改变，磁体的位置可选择性地改变磁体的位置，以保持施加到操作区域的磁场方向。 该系统适于实现根据本发明的导航方法，其中磁体单元中的磁体选择性地旋转和枢转，以保持由磁体投射的适当的磁场方向，以在磁体单元移动时维持装置方向 关于经营地区的支持。
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公开(公告)号：US20140107661A1
公开(公告)日：2014-04-17
申请号：US14043387
申请日：2013-10-01
IPC分类号： A61B19/00
CPC分类号： A61B19/22 , A61B34/70 , A61B34/73 , A61B2017/00106 , A61B2017/003
摘要： An apparatus and method for interventional navigation within a subject's body is provided in which a medical device having at least one electrostrictive element is adapted to cause the distal end of the medical device to bend in a given direction for improving navigation. The medical device may further comprise at least one magnetically responsive element on the distal end, which may be oriented in the approximate direction of a magnetic field that is applied to the subject's body. At least one method for navigating a medical device though a subject's body is provided, by changing the direction of an applied magnetic field to align a magnetically responsive element on the distal end for orienting the distal end, and by applying a voltage to at least one electrostrictive element disposed in the distal portion of the device for causing the distal end to change orientation from that achieved by application of the magnetic field alone.
摘要翻译： 提供了一种用于受试者身体内的介入导航的装置和方法，其中具有至少一个电致伸缩元件的医疗装置适于使医疗装置的远端沿给定方向弯曲以改善导航。 医疗装置还可以包括远端上的至少一个磁响应元件，其可以被施加到被检体的磁场的大致方向上定向。 通过改变所施加的磁场的方向以使远端上的磁响应元件对准以使远端定向，并且通过向至少一个电极施加电压，提供至少一种用于通过受试者身体导航医疗装置的方法 电致伸缩元件设置在装置的远端部分中，用于使远端改变方向与通过仅施加磁场实现的方向。
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25.发明授权Method and apparatus for rapidly changing a magnetic field produced by electromagnets 失效用于快速改变由电磁铁产生的磁场的方法和装置
公开(公告)号：US6128174A
公开(公告)日：2000-10-03
申请号：US921298
申请日：1997-08-29
CPC分类号： H02N15/00 , A61B34/70 , A61B34/73 , A61N2/02 , A61F2250/0001 , H01F7/1883
摘要： A method and apparatus for ramping current in an electromagnet in which a coil is used to generate the magnetic field provides rapid changes in the generated magnetic field. The method allows a change in current in the coil to be accomplished more rapidly than by applying a step change in voltage, when superconducting coils subject to quenching are used or when nonsuperconducting coils subject to other physical limitations are used. The method requires that both the current I(t) through the coil and the first derivative of the current vary with respect to time t during the ramping period, so that magnitude of the derivative of the current is higher when the magnitude of applied current is lower, lower when the magnitude of the applied current is higher. One variation of this method supplies (or removes) a constant amount of power from the magnetic field of the magnet, while another variation compensates for both self-generated eddy current losses and self-generated high field effects. The method can be used to guide a magnetic seed and in other applications. The apparatus includes, in its most general form, an electromagnetic coil, a generator for applying an initial current to the coil, and a processor controlling the generator that causes the current to ramp from an initial to a final value in accordance with the methods described above.
摘要翻译： 用于使线圈用于产生磁场的电磁铁中的电流斜坡增加的方法和装置提供所产生的磁场的快速变化。 当使用经受淬火的超导线圈或者当使用受其他物理限制的非超导线圈时，该方法允许线圈中的电流变化比通过施加电压的阶跃变化更快地实现。 该方法要求通过线圈的电流I（t）和电流的一阶导数在斜坡期间相对于时间t变化，使得当施加的电流的大小为 当施加的电流的大小较高时，较低，较低。 该方法的一个变型提供（或去除）来自磁体的磁场的恒定量的功率，而另一个变化补偿了自生成的涡流损耗和自生成的高场效应。 该方法可用于引导磁性种子和其他应用。 该装置以其最通用的形式包括电磁线圈，用于向线圈施加初始电流的发生器，以及控制发电机的处理器，其根据所描述的方法使电流从初始值向最终值斜坡 以上。
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26.发明授权Intracranial bolt and method of placing and using an intracranial bolt to position a medical device 失效颅内螺栓和放置和使用颅内螺栓来定位医疗装置的方法
公开(公告)号：US6152933A
公开(公告)日：2000-11-28
申请号：US189645
申请日：1998-11-10
CPC分类号： A61M39/0613 , A61M27/006 , A61B2090/103 , A61M2039/062 , A61M2039/0673
摘要： An intracranial bolt, for installation in an opening in the skull to provide access to the brain for a medical device, has a bore therethrough for the passage of the medical device, and an inflatable member in the bore which when inflated engages a medical device in the bore, releasably anchoring the device. The inflatable member comprises a cylinder of flexible sheet material inside the bore and secured to the wall of the bore defining an annular pocket therebetween. A passage extends through the bolt to the pocket for the introduction of fluid into the pocket to expanding radially inwardly. The bolt in a medical procedure on the brain by forming an opening in the skull; installing the intracranial bolt in the opening in the skull; and securing the cap on the bolt. When it is time to conduct the procedure, the cap is removed and a medical device can be inserted into the brain through the bolt. The inflatable member can be inflated to temporarily hold the medical device in place.
摘要翻译： 用于安装在颅骨中的开口中以提供用于医疗装置的大脑的颅内螺栓具有穿过其中的用于医疗装置通过的孔，以及在孔中的可充气构件，其在充气时与医疗装置接合 孔，可释放地锚定装置。 所述可充气构件包括在所述孔内的柔性片材的圆筒，并且固定到所述孔的壁，在所述孔的壁之间限定出环形袋。 通道延伸穿过螺栓到口袋中以将流体引入口袋中以径向向内扩张。 通过在头骨中形成一个开口在大脑的医疗过程中的螺栓; 将颅内螺栓安装在颅骨的开口处; 并将盖子固定在螺栓上。 当进行该程序的时候，帽被去除，医疗装置可以通过螺栓插入大脑。 充气构件可以被充气以临时将医疗装置保持在适当位置。
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公开(公告)号：US08551109B2
公开(公告)日：2013-10-08
申请号：US11770547
申请日：2007-06-28
IPC分类号： A61F11/00
CPC分类号： A61B19/22 , A61B34/70 , A61B34/73 , A61B2017/00106 , A61B2017/003
摘要： An apparatus and method for interventional navigation within a subject's body is provided in which a medical device having at least one electrostrictive element is adapted to cause the distal end of the medical device to bend in a given direction for improving navigation. The medical device may further comprise at least one magnetically responsive element on the distal end, which may be oriented in the approximate direction of a magnetic field that is applied to the subjects body. At least one method for navigating a medical device though a subject's body is provided, by changing the direction of an applied magnetic field to align a magnetically responsive element on the distal end for orienting the distal end, and by applying a voltage to at least one electrostrictive element disposed in the distal portion of the device for causing the distal end to change orientation from that achieved by application of the magnetic field alone.
摘要翻译： 提供了一种用于受试者身体内的介入导航的装置和方法，其中具有至少一个电致伸缩元件的医疗装置适于使医疗装置的远端沿给定方向弯曲以改善导航。 医疗装置还可以包括远端上的至少一个磁响应元件，其可以被施加到受试者身体的磁场的近似方向定向。 通过改变所施加的磁场的方向以使远端上的磁响应元件对准以使远端定向，并且通过向至少一个电极施加电压，提供至少一种用于通过受试者身体导航医疗装置的方法 电致伸缩元件设置在装置的远端部分中，用于使远端改变方向与通过仅施加磁场实现的方向。
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28.发明授权公开(公告)号：US06740103B2
公开(公告)日：2004-05-25
申请号：US10212458
申请日：2002-08-05
IPC分类号： A61B1732
CPC分类号： A61B17/320758 , A61B34/20 , A61B2017/22042 , A61B2017/320004 , A61B2034/2051 , A61M25/0127
摘要： A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body. Once at the site of atheromatous material, through the application of a magnetic field or magnetic gradient, the device can be manipulated into proximity to the atheromatous material to remove the material.
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29.发明授权Magnetically navigable and/or controllable device for removing material from body lumens and cavities 失效用于从体腔和腔体去除材料的磁导航和/或可控制的装置公开(公告)号：US06733511B2
公开(公告)日：2004-05-11
申请号：US09951129
申请日：2001-09-12
IPC分类号： A61B1722
CPC分类号： A61B17/320758 , A61B34/20 , A61B2017/22042 , A61B2017/320004 , A61B2034/2051 , A61M25/0127
摘要： A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body. Once at the site of atheromatous material, through the application of a magnetic field or magnetic gradient, the device can be manipulated into proximity to the atheromatous material to remove the material.
摘要翻译： 磁导通的粥样斑块切除装置包括切割头，具有近端和远端的柔性驱动轴，切割装置在远端上，以及与切割头相关联的磁体，该磁体具有足够的尺寸以允许切割头 由外部施加的磁场取向。 磁体可以是由导磁或永久磁性材料制成的切割头的一部分，驱动轴的一部分由导磁或永久磁性材料制成; 在切割头和驱动轴之间的单独的磁体，覆盖驱动轴的护套上的磁体的一部分。 或者，导线可以在其远端设置有磁性材料。 通过施加磁场和/或磁梯度，可以将手术切除装置引导到体内动脉粥样硬化材料的位置。 一旦在动脉粥样硬化材料的位置，通过施加磁场或磁梯度，该装置可以被操纵到动脉粥样硬化材料附近以去除材料。
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30.发明授权公开(公告)号：US06428551B1
公开(公告)日：2002-08-06
申请号：US09281241
申请日：1999-03-30
IPC分类号： A61B1732
CPC分类号： A61B17/320758 , A61B34/20 , A61B2017/22042 , A61B2017/320004 , A61B2034/2051 , A61M25/0127
摘要： A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body. Once at the site of atheromatous material, through the application of a magnetic field or magnetic gradient, the device can be manipulated into proximity to the atheromatous material to remove the material.
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