发明授权
- 专利标题: Device for locating magnetic implant by source field
- 专利标题(中): 用于通过源场定位磁性植入物的装置
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申请号: US10337237申请日: 2003-01-06
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公开(公告)号: US07010338B2公开(公告)日: 2006-03-07
- 发明人: Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Francis M. Creighton, IV
- 申请人: Rogers C. Ritter , Bevil J. Hogg , Peter R. Werp , Francis M. Creighton, IV
- 申请人地址: US MO St. Louis
- 专利权人: Stereotaxis, Inc.
- 当前专利权人: Stereotaxis, Inc.
- 当前专利权人地址: US MO St. Louis
- 代理机构: Harness Dickey & Pierce PLC
- 主分类号: A61B5/00
- IPC分类号: A61B5/00
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.