Electromagnetic coil apparatuses for surgical navigation and corresponding methods
AssigneeMedtronic Navigation, Inc.
InventorsAndrew Wald, Bruce M. Burg, Steven L. Hartmann, Brad Jacobsen, Jeffrey Swetnam
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Abstract
An electromagnetic device includes a jig and multiple wires. The jig includes a center member and coil-separating blocks. The coil-separating blocks protrude from the center member and are separated from each other to provide a coil channels. Each of the wires is wrapped on the jig, around the center member, and in one of the coil channels to form one of a multiple coils. Each of the coils is configured to connect to an electromagnetic navigation system and generate respective electromagnetic fields to be emitted relative to a subject.
Claims18
A system for generating an electromagnetic filed, comprising:
- a jig comprising
- a center member, and
- a plurality of coil-separating blocks protruding from the center member and are separated from each other to provide a plurality of coil channels;
- and
- a plurality of wires, wherein each of the plurality of wires is wrapped on the jig, around the center member, and in one of the plurality of coil channels to form one of a plurality of coils, wherein each of the plurality of coils is configured to operate with an electromagnetic navigation system and generate respective electromagnetic fields to be emitted relative to a subject wherein:
- the plurality of coil channels comprise dividers and wire channels separated by the dividers;
- and
- each of the plurality of wires are wrapped
- in one of the wire channels separated and spaced apart by the dividers,
- around the center member, and
- between two of the dividers or between one of the dividers and one of the coil-separating blocks;
- wherein the plurality of coil channels are segregated with gaps between segregated portions of the plurality of coil channels, wherein a first coil channel is segregated by a second coil channel such that gaps of the first coil channel are in the second coil channel;
- and
- each of the plurality of wires switch between wire channels in the gaps of the segregated portions of the plurality of coil channels.
A system for generating an electromagnetic field, comprising:
- a first jig comprising
- a first center member, and
- a first plurality of coils separating blocks protruding from the first center member and are separated from each other to provide a first plurality of coil channels;
- a first plurality of wires, wherein each of the first plurality of wires is wrapped on the first jig, around the first center member, and in one of the first plurality of coil channels to form one of a first plurality of coils;
- and
- a pair of end plates, wherein the first jig is in direct contact with the pair of end plates and is connected to and between the pair of end plates;
- wherein at least one coil channel includes a plurality of dividers to provide a plurality of wire channels in the at least one coil channel:
- further comprising at least one crossover section in which at least one wire is switched between two wire channels formed by the dividers;
- wherein the crossover section separates each divider, such that each divider is non-contiguous annularly and where the at least one wire crosses itself in the crossover section;
- wherein the at least one wire crosses itself a plurality of times in the crossover section.
Dependencies are inferred from the claim text.