System and method for identifying a landmark
First Claim
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1. A field generator for use in a surgical targeting system, the field generator comprising:
- a mounting structure comprising receiving elements disposed on the mounting structure at locations and orientations relative to each other, the mounting structure comprising a reinforced epoxy laminate;
electromagnetic field generating components received in the receiving elements, the electromagnetic field generating components being configured to produce a sequence of multiple different magnetic field distributions; and
at least one covering formed over the mounting structure,wherein the mounting structure is configured to maintain the locations and orientations of the receiving elements within a predetermined tolerance relative to each other after the field generator is subjected to one or more autoclave sterilization processes.
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Abstract
A field generator for use in a surgical targeting system is disclosed. The field generator includes a mounting structure including elements that are configured to receive components of an electromagnetic field generator. The elements are disposed on the mounting structure at locations and orientations relative to each other. The field generator includes at least one covering formed over the mounting structure, wherein, in use, the locations and orientations of the elements relative to each other remain substantially unaltered after exposure to one or more sterilization processes.
240 Citations
28 Claims
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1. A field generator for use in a surgical targeting system, the field generator comprising:
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a mounting structure comprising receiving elements disposed on the mounting structure at locations and orientations relative to each other, the mounting structure comprising a reinforced epoxy laminate; electromagnetic field generating components received in the receiving elements, the electromagnetic field generating components being configured to produce a sequence of multiple different magnetic field distributions; and at least one covering formed over the mounting structure, wherein the mounting structure is configured to maintain the locations and orientations of the receiving elements within a predetermined tolerance relative to each other after the field generator is subjected to one or more autoclave sterilization processes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A field generator comprising:
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a disc-shaped mounting structure having components of an electromagnetic field generator mounted on the mounting structure at predetermined locations and orientations, the components being configured to produce electromagnetic fields from which a magnetic field sensor detecting the electromagnetic fields can produce an output indicating a location of the magnetic field sensor relative to the field generator in three dimensions, the mounting structure comprising a reinforced epoxy laminate material; and at least one covering disposed around the mounting structure and the components, wherein the mounting structure maintains the predetermined locations and orientations of the components during autoclave sterilization processes. - View Dependent Claims (23, 24)
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25. A field generator comprising:
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a mounting structure comprising receiving elements disposed on the mounting structure at predetermined locations and orientations relative to each other, the mounting structure being formed of a glass-reinforced laminate material; electromagnetic induction coils received in the receiving elements, the field generator being configured to produce a defined set of magnetic field distributions using the electromagnetic induction coils; at least one covering that encapsulates the mounting structure, the receiving elements, and the induction coils, the at least one covering being formed at least in part of silicone, wherein the mounting structure maintains the locations and orientations of the receiving elements relative to each other within operational tolerances of the predetermined locations and orientations when the field generator is subjected to autoclave sterilization at a temperature of at least 120 degrees Celsius. - View Dependent Claims (26, 27, 28)
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Specification