发明名称 |
PERCUTANEOUS NEPHROLITHOTOMY TARGET FINDING SYSTEM |
摘要 |
A target finding system identifies a surgical target such as a kidney stone by disposing an emitter such as a magnetic source behind or adjacent the surgical target, and employing a circuit to identify an axis to the emitter, thus defining an axis or path to the surgical target. An array of sensors arranged in an equidistant, coplanar arrangement each senses a signal indicative of a distance to the emitter. A magneto resistor sensor generates a variable resistance is responsive to the distance to a magnetic coil emitting a magnetic field. An equal signal from each of the coplanar sensors indicates positioning on an axis passing through a point central to the sensors and orthogonal to the plane. In one embodiment, a pair of Wheatstone bridges enhances the accuracy of the system. |
申请公布号 |
US2014051985(A1) |
申请公布日期 |
2014.02.20 |
申请号 |
US201313913649 |
申请日期 |
2013.06.10 |
申请人 |
FAN TAILIN;COOK CHRISTOPHER A. |
发明人 |
FAN TAILIN;COOK CHRISTOPHER A. |
分类号 |
A61B1/00;A61B1/307;A61B17/34 |
主分类号 |
A61B1/00 |
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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