REDUCED FIELD DISTORTION IN MEDICAL TOOLS,申请号CA20072924111-传众专利搜索

REDUCED FIELD DISTORTION IN MEDICAL TOOLS

申请公布号：CA2924111(A1)

申请号：CA20072924111

申请日期：2007.04.26

申请公布日期：2007.10.28

申请人：

BIOSENSE WEBSTER, INC.

发明人：YARON, URI;BAR-TAL, MEIR;NITZAN, YAACOV;SHALGI, AVI

分类号：A61B34/20;A61B17/88

主分类号：A61B34/20

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.