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    • 2. 发明授权
    • Method for locating magnetic implant by source field
    • 通过源场定位磁性植入物的方法
    • US06505062B1
    • 2003-01-07
    • US09020942
    • 1998-02-09
    • Rogers C. RitterBevil J. HoggPeter R. WerpFrancis M. Creighton, IV
    • Rogers C. RitterBevil J. HoggPeter R. WerpFrancis M. Creighton, IV
    • A61B500
    • A61B5/066A61B5/06A61B5/743
    • An apparatus and method for locating a magnetic implant in a surgical application using the field of a source magnet for the implant guiding field. The source magnet is an electromagnet having a separate calibrated magnetic field component in addition to the guiding field, so that both the magnitude and orientation of the magnetic field as a function of position around the magnet are known. A magnetic implant is provided with a sensor, such as a three-axis Hall effect sensor, to provide an indication of the magnitude and orientation of an applied magnetic field when the implant is surgically implanted in a patient. After implantation, the source magnet is energized with a current having a modulated component. The modulated component is received and filtered from the signal received from the Hall effect sensor in the implant, and provided to a processor that computes the location of the implant relative to the electromagnet based upon the detected magnitude and orientation of the modulated component of the magnetic field, and the location and orientation of the electromagnet. Localizers may be used to supply the relative locations of the patient and the electromagnet to the processor. A display may be provided to display a representation of the location of the implant in the patient, which may also be superimposed over a preoperative image of the patient.
    • 一种用于在外科应用中使用用于植入物引导区的源磁体的场来定位磁性植入物的装置和方法。 源极磁体除了引导场之外还具有单独的校准磁场分量的电磁体,使得作为磁体周围位置的函数的磁场的大小和取向都是已知的。 磁性植入物设置有诸如三轴霍尔效应传感器的传感器,以在植入物被手术植入患者体内时提供所施加的磁场的大小和取向的指示。 在植入之后,源磁体用具有调制分量的电流通电。 调制分量从在植入物中从霍尔效应传感器接收的信号接收和滤波,并提供给处理器,该处理器基于检测到的磁性调制分量的大小和取向来计算植入物相对于电磁体的位置 场,以及电磁铁的位置和方向。 定位器可用于将患者和电磁体的相对位置提供给处理器。 可以提供显示器来显示植入物在患者中的位置的表示,其也可以叠加在患者的术前图像上。
    • 5. 发明授权
    • Digital magnetic system for magnetic surgery
    • 磁性手术数字磁系统
    • US06311082B1
    • 2001-10-30
    • US09251164
    • 1999-02-17
    • Francis M. Creighton, IVBevil J. HoggRogers C. Ritter
    • Francis M. Creighton, IVBevil J. HoggRogers C. Ritter
    • A61B505
    • A61B1/00158A61B34/20A61B34/73A61B90/10A61B2034/733A61B2090/376H02K41/00
    • A device and a method for guiding or applying force to a magnetic implant within the body of a patient. The device includes a bed for support of the patient, a set of separately energizable electromagnets or separately controllable permanent magnets so arranged to produce magnetic fields of varying orientations in a treatment region of the patient, and a processor that controls the currents in the electromagnets, or shutters on the permanent magnets to produce a selected magnetic field and/or gradient for guiding or moving the implant. The magnets are configured to allow a medical imaging device to be used to provide a real-time display of an operating procedure in which magnetic guidance is used. The method for guiding the implant includes the placing of the body on the bed, which may be servo-controlled, inserting a magnetically-guided implant into the treatment region, arranging the magnets around the body so that they can supply the necessary magnetic fields and/or gradients through appropriate energization of subsets of the magnets, and applying current or shutter control to subsets of the magnets to provide a guiding magnetic field for the implant, which may occur while real-time medical imaging of the procedure is occurring. The bed may be moved under servo control to provide further control of the direction and magnitude of the magnetic field affecting the implant.
    • 用于引导或施加力到患者体内的磁性植入物的装置和方法。 该装置包括用于支撑患者的床,一组单独可激励的电磁体或单独控制的永磁体,其被布置成产生患者治疗区域中具有不同取向的磁场,以及控制电磁体中的电流的处理器, 或快门以产生用于引导或移动植入物的选定的磁场和/或梯度。 磁体被配置为允许医疗成像装置用于提供其中使用磁性引导的操作过程的实时显示。 用于引导植入物的方法包括将身体放置在可以被伺服控制的床上,将磁引导植入物插入治疗区域中,将磁体布置在身体周围,使得它们可以提供必要的磁场和 /或通过磁体的子集的适当激励梯度,以及将电流或快门控制施加到磁体的子集,以为在该过程的实时医学成像发生时可能发生的植入物提供引导磁场。 床可以在伺服控制下移动,以进一步控制影响植入物的磁场的方向和幅度。
    • 8. 发明授权
    • Device for locating magnetic implant by source field
    • 用于通过源场定位磁性植入物的装置
    • US07010338B2
    • 2006-03-07
    • US10337237
    • 2003-01-06
    • Rogers C. RitterBevil J. HoggPeter R. WerpFrancis M. Creighton, IV
    • Rogers C. RitterBevil J. HoggPeter R. WerpFrancis M. Creighton, IV
    • A61B5/00
    • A61B5/066A61B5/06A61B5/743
    • An apparatus and method for locating a magnetic implant in a surgical application using the field of a source magnet for the implant guiding field. The source magnet is an electromagnet having a separate calibrated magnetic field component in addition to the guiding field, so that both the magnitude and orientation of the magnetic field as a function of position around the magnet are known. A magnetic implant is provided with a sensor, such as a three-axis Hall effect sensor, to provide an indication of the magnitude and orientation of an applied magnetic field when the implant is surgically implanted in a patient. After implantation, the source magnet is energized with a current having a modulated component. The modulated component is received and filtered from the signal received from the Hall effect sensor in the implant, and provided to a processor that computes the location of the implant.
    • 一种用于在外科应用中使用用于植入物引导区的源磁体的场来定位磁性植入物的装置和方法。 源极磁体除了引导场之外还具有单独的校准磁场分量的电磁体,使得作为磁体周围位置的函数的磁场的大小和取向都是已知的。 磁性植入物设置有诸如三轴霍尔效应传感器的传感器,以在植入物被手术植入患者体内时提供所施加的磁场的大小和取向的指示。 在植入之后,源磁体用具有调制分量的电流通电。 调制分量从在植入物中从霍尔效应传感器接收的信号接收和滤波,并提供给计算植入物位置的处理器。