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US 6,747,539 B1Granted
Patient-shielding and coil system
OwnerMichael A. Martinelliinventor
Life of this patent
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Abstract
A patient-shielding and coil system, including a coil wire electrically coupled to a source of electrical current, an electrically conductive surface, insulation material situated between the coil wire and the conductive surface, and a drain wire connected to the conductive surface and forming a capacitive current loop with respect to the source.
Claims17
A patient-shielding and coil system for use with a surgical navigation system that determines the position and orientation of a surgical probe within a surgical region of a patient, said patient-shielding and coil system comprising:
- a coil wire electrically coupled to a source of electrical current, said coil wire operable to generate a magnetic field for use in navigating the surgical probe;
- an electrically conductive surface;
- insulation material situated between the coil wire and the conductive surface;
- and
- a drain wire connected to the conductive surface and forming a capacitive current loop with respect to the source, wherein capacitive current generated by said magnetic field is reduced in the patient while the magnetic field used for navigation substantially remains the same.
2 more elements
Dependencies are inferred from the claim text.