公开(公告)号：US07286034B2

公开(公告)日：2007-10-23

申请号：US11219522

申请日：2005-09-02

Applicant: Francis M. Creighton

Inventor： Francis M. Creighton

IPC: H01F7/02

CPC classification number: H01F7/0273 ,  A61B17/00 ,  A61B34/73 ,  A61B2034/731 ,  A61N2/00 ,  H01F7/0278 ,  H01F7/0294 ,  H01F13/003 ,  H01F41/028 ,  Y10T29/4902

Abstract: A permanent magnet in which the magnetization direction varies with location to optimize or restrict a magnetic field property in a selected direction at a selected point. The magnetic field property may be, for example, the transverse magnetic field, axial magnetic field, axial gradient of the transverse magnetic field, transverse gradient of the transverse magnetic field, axis gradient of the axial magnetic field, transverse gradient of the axial magnetic field, the product of the transverse magnetic field and the transverse gradient of the transverse magnetic field, the product of the transverse magnetic field and the axial gradient of the transverse magnetic field, the product of the axial magnetic field and the transverse gradient of the axial magnetic field, or the product of the axial magnetic field and the axial gradient of the axial magnetic field. The magnet may be formed of one or more segments in which the magnetization direction varies smoothly and continuously, or the magnet may be formed of a plurality of segments in which the magnetization direction is constant. A method of making and using such magnets is also disclosed.

Abstract translation: 一种永磁体，其中磁化方向随着位置而变化，以在选定的点优化或限制所选方向上的磁场特性。 磁场特性可以是例如横向磁场，轴向磁场，横向磁场的轴向梯度，横向磁场的横向梯度，轴向磁场的轴向梯度，轴向磁场的横向梯度 横向磁场和横向磁场横向梯度的乘积，横向磁场的乘积和横向磁场的轴向梯度，轴向磁场的乘积和轴向磁场的横向梯度 场或轴向磁场和轴向磁场的轴向梯度的乘积。 磁体可以由磁化方向平滑且连续地变化的一个或多个段形成，或者磁体可以由磁化方向恒定的多个段形成。 还公开了制造和使用这种磁体的方法。

公开(公告)号：US07019610B2

公开(公告)日：2006-03-28

申请号：US10347525

申请日：2003-01-17

Applicant: Francis M. Creighton, IV ,  Seth Burgett

Inventor： Francis M. Creighton, IV ,  Seth Burgett

IPC: H01F7/02

CPC classification number: H01F7/0278 ,  A61B6/12 ,  A61B34/70 ,  A61B34/73 ,  A61B2034/732 ,  A61B2034/733

Abstract: A system for magnetically navigating a medical device in an operating region within the body of a patient. The system includes a magnet having a front field projecting from the front of the magnet sufficient to project a magnetic field into the operating region in the patient. The magnet is mounted for movement between a navigation position in which the magnet is located adjacent to the patient with the front of the magnetic generally facing the operating region, and an imaging position in which the magnet is spaced from the patient and the front generally faces away from the operating region.

Abstract translation: 一种用于在患者体内的操作区域中磁性导航医疗装置的系统。 该系统包括具有从磁体的前部突出的前场足以将磁场投射到患者的操作区域中的磁体。 磁体被安装成在磁体位于与病人相邻的导航位置之间移动，磁体的大致面向操作区域的磁体的前部，以及磁体与患者间隔开的成像位置， 远离经营区域。

公开(公告)号：US06630879B1

公开(公告)日：2003-10-07

申请号：US09497467

申请日：2000-02-03

Applicant: Francis M. Creighton, IV ,  Rogers C. Ritter ,  Andrew F. Hall ,  Roger N. Hastings

Inventor： Francis M. Creighton, IV ,  Rogers C. Ritter ,  Andrew F. Hall ,  Roger N. Hastings

IPC: H01F702

CPC classification number: A61B34/73 ,  A61B1/00158 ,  A61B34/70 ,  A61B90/36 ,  A61B2034/301 ,  A61B2034/733 ,  A61B2034/742 ,  A61M25/0127

Abstract: A system for magnetically assisted surgery includes a magnetic support structure, a patient support structure and a magnet having at least four poles attached to the magnetic support structure so that the magnet provides a near-field magnetic field in an operating region of a patient supported by the patient support structure. The magnet is moveable so that the direction of the magnetic field lines in the operating region is adjustable. The magnet may include a pair of essentially semicircular half-segments permanently magnetized and joined in an extremely stable disk configuration. The magnetic field and gradient field provided by the magnet is such that movement of the disk in one plane combined with rotation of the disk is sufficient to orient the magnetic field during surgical use, thereby reducing interference to medical imaging devices needed during surgery. An example of a medical delivery device that may be used for surgery in conjunction with this system is a flexible endoscope or catheter having a series of magnetically permeable rings.

公开(公告)号：US06459924B1

公开(公告)日：2002-10-01

申请号：US09189633

申请日：1998-11-10

Applicant: Francis M. Creighton, IV ,  Peter R. Werp ,  Rogers C. Ritter

Inventor： Francis M. Creighton, IV ,  Peter R. Werp ,  Rogers C. Ritter

IPC: A61B600

CPC classification number: A61B1/00158 ,  A61B34/70 ,  A61B34/73 ,  A61B90/10 ,  A61B2034/733 ,  A61B2090/376 ,  A61M25/0127

Abstract: An articulated magnet assembly optionally includes one or two additional fixed magnets to guide or move such as by pulling or pushing a magnetic structure in the body. The magnetic structure may be a magnetic tip of a catheter or a magnetic seed, or other such magnetic assembly, implant or device. The device is arranged to facilitate biplanar, real-time, X-ray imaging of the patient. The moved magnet can be a large, strong permanent magnet or a cored solenoid. The added, fixed electromagnets may have either normally conducting or superconducting coils. The magnet on the articulated magnet assembly can move radially, along a polar direction, and at an azimuthal angle, and may also pivot in place to direct an opposite pole of the magnet in the direction of the patient. Magnetically-assisted surgery can be performed, in some instances, by pivoting the magnet on one or two axes without withdrawing it from the vicinity of the patient to control the direction and/or orientation of a temporarily or permanently implanted magnetic surgical device. If the magnet is an electromagnetic coil, this pivoting may or may not have to be accompanied by a ramping of current in the coil.

Abstract translation: 铰接式磁体组件可选地包括一个或两个额外的固定磁体，以引导或移动，例如通过拉动或推动体内的磁性结构。 磁性结构可以是导管或磁性种子的磁性尖端，或其他这样的磁性组件，植入物或装置。 该装置被设置为便于患者的双平面，实时，X射线成像。 移动的磁体可以是大的，强的永久磁铁或磁心线圈。 所添加的固定电磁铁可以具有正常导电或超导线圈。 关节式磁体组件上的磁体可以沿着极性方向和方位角径向移动，并且还可以枢转到适当位置，以引导磁体在患者方向上的相反极点。 在一些情况下，可以进行磁辅助手术，通过在一个或两个轴上枢转磁体而不将其从患者附近撤出，以控制临时或永久植入的磁性手术装置的方向和/或取向。 如果磁体是电磁线圈，则该枢转可能伴随着线圈中的电流的斜坡而不必伴随。