专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US6128174A Method and apparatus for rapidly changing a magnetic field produced by electromagnets 失效
标题翻译：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
申请人： Rogers C. Ritter , Peter R. Werp , Michael A. Lawson
发明人： Rogers C. Ritter , Peter R. Werp , Michael A. Lawson
IPC分类号： A61B19/00 , A61F2/02 , A61N2/02 , H01F7/18 , H02N15/00
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。

22. 发明授权

US5931818A Method of and apparatus for intraparenchymal positioning of medical devices 失效
标题翻译：医疗器械实时定位的方法和装置
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
IPC分类号： A61B5/06 , A61B6/12 , A61B19/00 , A61M25/00 , A61M25/01 , A61M25/095 , A61M31/00
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。

23. 发明授权

US08551109B2 Electrostriction devices and methods for assisted magnetic navigation 有权
标题翻译：用于辅助磁导航的电致伸缩装置和方法
公开(公告)号：US08551109B2
公开(公告)日：2013-10-08
申请号：US11770547
申请日：2007-06-28
申请人： Raju R. Viswanathan , Rogers C. Ritter , Peter R. Werp
发明人： Raju R. Viswanathan , Rogers C. Ritter , Peter R. Werp
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。

24. 发明授权

US07771415B2 Method for safely and efficiently navigating magnetic devices in the body 有权
公开(公告)号：US07771415B2
公开(公告)日：2010-08-10
申请号：US11603339
申请日：2006-11-21
申请人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Walter M. Blume , Francis M. Creighton, IV , Roger N. Hastings
发明人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Walter M. Blume , Francis M. Creighton, IV , Roger N. Hastings
IPC分类号： A61B17/00
CPC分类号： A61B1/00158 , A61B1/01 , A61B17/12022 , A61B17/12113 , A61B17/12131 , A61B34/70 , A61B34/73 , A61B2017/00876 , A61B2017/1205 , A61B2034/733 , A61M25/0105 , A61M25/0127
摘要： A method of turning a medical device, having a magnetically responsive element associated with its distal end, at an operating point within an operating region inside a patient's body from an initial direction to a desired final direction, through the movement of at least one external source magnet. The at least one external source magnet is moved in such a way as to change the direction of the distal end of the magnetic medical device from the initial direction to the desired final direction without substantial deviation from the plane containing the initial direction and the desired final direction.

25. 发明授权

US07346379B2 Electrophysiology catheter 有权
标题翻译：电生理导管
公开(公告)号：US07346379B2
公开(公告)日：2008-03-18
申请号：US11319039
申请日：2005-12-27
申请人： Michael J. Eng , Raju R. Viswanathan , Peter R. Werp , Ilker Tunay , Ashwini K. Pandey , Gareth T. Munger
发明人： Michael J. Eng , Raju R. Viswanathan , Peter R. Werp , Ilker Tunay , Ashwini K. Pandey , Gareth T. Munger
IPC分类号： A61B5/04 , A61B18/14 , A61B19/00
CPC分类号： A61B5/0422 , A61B1/00158 , A61B5/062 , A61B18/1492 , A61B34/20 , A61B34/70 , A61B34/73 , A61B2017/00053 , A61B2018/00839 , A61B2034/2051
摘要： An electrophysiology catheter includes a tube having a proximal end, a distal end, and a lumen therebetween. The tube is preferably comprised of multiple sections of different flexibility, arranged so that the flexibility of the catheter increases from the proximal end to the distal end. There is a first generally hollow electrode member at the distal end. At least one magnetically responsive element is disposed at least partially in the hollow electrode, for orienting the distal end of the catheter with an externally applied magnetic field. Multiple magnets can be distributed over the distal portion of the device. The end electrode can have openings for delivering irrigating fluid, and/or a sleeve can be provided around the tube to create an annular space for the delivering of irrigating fluid. A temperature sensor can be provided to control the operation of the catheter. A localization coil can also be included to sense the position and orientation of the catheter.
摘要翻译：电生理导管包括具有近端，远端和其间的内腔的管。管优选地由具有不同柔性的多个部分组成，其布置成使得导管的柔性从近端增加到远端。在远端处有第一大致中空的电极部件。至少一个磁响应元件至少部分地设置在中空电极中，用于用外部施加的磁场定向导管的远端。多个磁体可以分布在装置的远端部分上。端电极可以具有用于输送冲洗流体的开口，和/或可以在管周围设置套筒，以产生用于输送冲洗流体的环形空间。可以提供温度传感器来控制导管的操作。还可以包括定位线圈以感测导管的位置和取向。

26. 发明授权

US07264584B2 Method for safely and efficiently navigating magnetic devices in the body 有权
标题翻译：安全有效地导航身体中磁性装置的方法
公开(公告)号：US07264584B2
公开(公告)日：2007-09-04
申请号：US10796568
申请日：2004-03-09
申请人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Walter M. Blume , Francis M. Creighton, IV , Roger N. Hastings
发明人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Walter M. Blume , Francis M. Creighton, IV , Roger N. Hastings
IPC分类号： A61N5/00 , C01S19/00 , A61F2/28
CPC分类号： A61B1/00158 , A61B1/01 , A61B17/12022 , A61B17/12113 , A61B17/12131 , A61B34/70 , A61B34/73 , A61B2017/00876 , A61B2017/1205 , A61B2034/733 , A61M25/0105 , A61M25/0127
摘要： A method of turning a medical device, having a magnetically responsive element associated with its distal end, at an operating point within an operating region inside a patient's body from an initial direction to a desired final direction, through the movement of at least one external source magnet. The at least one external source magnet is moved in such a way as to change the direction of the distal end of the magnetic medical device from the initial direction to the desired final direction without substantial deviation from the plane containing the initial direction and the desired final direction.
摘要翻译：一种通过至少一个外部源的移动来将具有与其远端相关联的具有磁响应元件的医疗装置转动到患者身体内部的操作区域内的操作区域的方法，所述操作区域从初始方向到期望的最终方向磁铁。至少一个外部源磁体以使得磁性医疗装置的远端的方向从初始方向改变到期望的最终方向的方式移动，而不会从包含初始方向的平面和期望的最终方向显着偏离方向。

27. 发明授权

US07010338B2 Device for locating magnetic implant by source field 失效
标题翻译：用于通过源场定位磁性植入物的装置
公开(公告)号：US07010338B2
公开(公告)日：2006-03-07
申请号：US10337237
申请日：2003-01-06
申请人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Francis M. Creighton, IV
发明人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Francis M. Creighton, IV
IPC分类号： A61B5/00
CPC分类号： A61B5/066 , A61B5/06 , A61B5/743
摘要： 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.
摘要翻译：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。

28. 发明授权

US06980843B2 Electrophysiology catheter 有权
标题翻译：电生理导管
公开(公告)号：US06980843B2
公开(公告)日：2005-12-27
申请号：US10443113
申请日：2003-05-21
申请人： Michael Eng , Raju R. Viswanathan , Peter R. Werp , Ilker Tunay , Ashwini K. Pandey , Gareth T. Munger
发明人： Michael Eng , Raju R. Viswanathan , Peter R. Werp , Ilker Tunay , Ashwini K. Pandey , Gareth T. Munger
IPC分类号： A61B17/00 , A61B18/14 , A61B19/00 , A61B5/04
CPC分类号： A61B5/0422 , A61B1/00158 , A61B5/062 , A61B18/1492 , A61B34/20 , A61B34/70 , A61B34/73 , A61B2017/00053 , A61B2018/00839 , A61B2034/2051
摘要： An electrophysiology catheter includes a tube having a proximal end, a distal end, and a lumen therebetween. The tube is preferably comprised of multiple sections of different flexibility, arranged so that the flexibility of the catheter increases from the proximal end to the distal end. There is a first generally hollow electrode member at the distal end. At least one magnetically responsive element is disposed at least partially in the hollow electrode, for orienting the distal end of the catheter with an externally applied magnetic field. Multiple magnets can be distributed over the distal portion of the device. The end electrode can have openings for delivering irrigating fluid, and/or a sleeve can be provided around the tube to create an annular space for the delivering of irrigating fluid. A temperature sensor can be provided to control the operation of the catheter. A localization coil can also be included to sense the position and orientation of the catheter.
摘要翻译：电生理导管包括具有近端，远端和其间的内腔的管。管优选地由具有不同柔性的多个部分组成，其布置成使得导管的柔性从近端增加到远端。在远端处有第一大致中空的电极部件。至少一个磁响应元件至少部分地设置在中空电极中，用于用外部施加的磁场定向导管的远端。多个磁体可以分布在装置的远端部分上。端电极可以具有用于输送冲洗流体的开口，和/或可以在管周围设置套筒，以产生用于输送冲洗流体的环形空间。可以提供温度传感器来控制导管的操作。还可以包括定位线圈以感测导管的位置和取向。

29. 发明授权

US06702804B1 Method for safely and efficiently navigating magnetic devices in the body 有权
公开(公告)号：US06702804B1
公开(公告)日：2004-03-09
申请号：US09678640
申请日：2000-10-03
申请人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Walter M. Blume , Francis M. Creighton, IV , Roger N. Hastings
发明人： Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Walter M. Blume , Francis M. Creighton, IV , Roger N. Hastings
IPC分类号： A61B1700
CPC分类号： A61B1/00158 , A61B1/01 , A61B17/12022 , A61B17/12113 , A61B17/12131 , A61B34/70 , A61B34/73 , A61B2017/00876 , A61B2017/1205 , A61B2034/733 , A61M25/0105 , A61M25/0127
摘要： A method of turning a medical device, having a magnetically responsive element associated with its distal end, at an operating point within an operating region inside a patient's body from an initial direction to a desired final direction, through the movement of at least one external source magnet. The at least one external source magnet is moved in such a way as to change the direction of the distal end of the magnetic medical device from the initial direction to the desired final direction without substantial deviation from the plane containing the initial direction and the desired final direction.

30. 发明授权

US06507751B2 Method and apparatus using shaped field of repositionable magnet to guide implant 失效
公开(公告)号：US06507751B2
公开(公告)日：2003-01-14
申请号：US09824425
申请日：2001-04-02
申请人： Walter M. Blume , Rogers C. Ritter , Peter R. Werp , Bevil J. Hogg
发明人： Walter M. Blume , Rogers C. Ritter , Peter R. Werp , Bevil J. Hogg
IPC分类号： A61B1900
CPC分类号： A61B34/73 , A61B34/20 , A61B34/70 , A61B2034/107 , A61B2034/2055 , A61B2034/733
摘要： Methods and apparatuses for displaying and using a shaped field of a repositionable magnet to move, guide, and/or steer a magnetic seed or catheter in living tissue for medicinal purposes. A moveable magnet assembly and a portion of a patient's body undergoing magnetically-aided surgery are both provided with fiducial markers. The portion of the patient's body is fixed in a location in which the fiducial markers are sensed and located by a set of localizers. The positions of the fiducial markers are determined by a processor, which operates on a stored representation of the magnetic field of a magnet in the magnet assembly to provide a display of the present magnetic field of the magnet. This display may be superimposed over an MRI, X-ray or CAT image during surgery. The repositionable magnet can be an electromagnet. In some embodiments, a computer calculates orientations and currents for an external electromagnet to move the implanted magnetic object in the patient's body through a desired path. The display can provide real-time imaging of the implanted magnetic object in comparison to the desired path as the object is moved.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式