Method and apparatus for surgical navigation
AssigneeMedtronic Navigation, Inc.
InventorsJohn H. Dukesherer, Bruce M. Burg, Bradley A. Jascob, Paul Kessman
Life of this patent
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Abstract
A surgical navigation system for navigating a region of a patient includes a non-invasive dynamic reference frame and/or fiducial marker, sensor tipped instruments, and isolator circuits. The dynamic reference frame may be repeatably placed on the patient in a precise location for guiding the instruments. The instruments may be precisely guided by positioning sensors near moveable portions of the instruments. Electrical sources may be electrically isolated from the patient.
Claims19
A surgical navigation system for navigating a procedure relative to a patient having an electrical isolating portion, comprising:
- an electrical source;
- an instrument including a conducting element disposable near the patient;
- and
- an isolation transformer interconnecting said electrical source and said instrument, said isolation transformer including an input side, an output side and a dielectric medium, said input side having at least one input side coil coupled to the instrument via a transmission line and said output side having an output side coil for receiving a signal from said input side coil and communicating with a workstation of the navigation system, said input side and output side coils being electrically isolated from each other by the dielectric medium;
- wherein the input side coil includes a plurality of additional input side coils coupled to a respective plurality of additional instruments;
- and wherein said output side coil includes a greater number of windings than each of said plurality of input side coils so as to amplify the received signal.
A surgical navigation system for navigating a procedure relative to a patient having an electrical isolating portion, comprising:
- an electrical source;
- a plurality of instruments, at least one of the plurality of instruments including a navigation sensor disposable near the patient and for producing an induced signal from a generated magnetic field;
- and
- an isolation transformer interconnecting said electrical source and said plurality of instruments, said isolation transformer including an input side, an output side and a dielectric medium, said input side having a respective plurality of separate input side coils each coupled to a respective instrument via a transmission line, said output side having an output side coil for receiving a signal from each of said plurality of input side coils and communicating with a workstation of the navigation system, said plurality of input side coils and said output side coils being electrically isolated from each other by the dielectric medium;
- wherein said plurality of instruments is selected from the group consisting of a dynamic reference frame, a navigation probe, an electro-magnetic sensor, a stylet, and an electroencephalogram contact;
- and
- wherein said output side coil includes a greater number of windings than each of said plurality of input side coils so as to amplify the received signal.
A surgical navigation system for navigating a procedure relative to a patient having an electrical isolating portion, comprising:
- an electrical source;
- an instrument including a navigation sensor disposable near the patient and for producing an induced signal from a generated magnetic field;
- and
- an isolation transformer interconnecting said electrical source and said instrument, said isolation transformer including an input side, an output side and a dielectric medium, said input side having at least one input side coil coupled to the instrument via a transmission line and said output side having an output side coil for receiving a signal from said input side coil and communicating with a workstation of the navigation system, said input side and output side coils being electrically isolated from each other by the dielectric medium;
- wherein said output side coil includes a greater number of windings than the input side coil so as to amplify the received signal.
Dependencies are inferred from the claim text.