发明名称 |
REDUCED FIELD DISTORTION IN MEDICAL TOOLS |
摘要 |
A medical tool for operating in a working volume of a magnetic position tracking system includes a first plurality of layers including an electrically conductive material and a second plurality of layers including an electrically insulating material and interleaved with the first plurality. The layers are arranged to reduce eddy current distortion in a magnetic field generated by the magnetic position tracking system. Another medical tool includes a core including a ferromagnetic material and an outer coating layer on the core. The coating layer includes a conductive material configured to produce eddy current distortion so as to cancel at least part of a distortion caused by the core in a magnetic field of the magnetic position tracking system. Yet another medical tool includes an electrically conducting loop-shaped element having an electrical discontinuity introduced therein, so as to reduce eddy current distortion caused by the loop-shaped element. |
申请公布号 |
CA2586416(A1) |
申请公布日期 |
2007.10.28 |
申请号 |
CA20072586416 |
申请日期 |
2007.04.26 |
申请人 |
BIOSENSE WEBSTER, INC. |
发明人 |
YARON, URI;BAR-TAL, MEIR;SHALGI, AVI;NITZAN, YAACOV |
分类号 |
A61B5/06;A61B17/3201;A61B17/88;A61B19/00 |
主分类号 |
A61B5/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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