Magnetic field generator with minimal image occlusion and minimal impact on dimensions in C-arm x-ray environments
AssigneeSt. Jude Medical International Holding S.à r.l.
InventorsUzi Eichler, Alon Izmirli, Yuval Vaknin, Kobi Kor
Life of this patent
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Abstract
A magnetic field generator assembly is configured to be associated with a table supporting a body. The magnetic field generator comprises magnetic field transmitters that are thin (of minimal height) and transparent, or substantially transparent, to x-ray radiation. The magnetic field transmitters are configured to minimally obstruct components of an imaging system and to minimally interfere with image quality.
Claims18
A magnetic field generating assembly securable to a table supporting a body, the magnetic field generating assembly comprising:
- a substrate having a first planar surface;
- a transmitter disposed on the substrate, the transmitter including an elongate conductive element wound around a central axis in a series of windings at a continuously increasing distance relative to the central axis on the first planar surface;
- a conductive wire connecting the elongate conductive element to a power source,
- wherein a separation distance between adjacent windings of the elongate conductive element is less than 0.3 mm, and wherein a height of the transmitter is within a range of 10 micrometers to 0.25 millimeters.
A medical device navigation system, comprising:
- a table supporting a body;
- and
- a magnetic field generator assembly, including:
- a substrate having a first planar surface,
- a plurality of elongate conductive elements wound around a central axis in a series of windings at a continuously increasing distance relative to the central axis on the first planar surface,
- a conductive wire connecting the plurality of elongate conductive elements to a power source,
- a control unit, wherein a current supplied to the plurality of elongate conductive elements is controlled via the control unit, and
- a housing surrounding the plurality of elongate conductive elements and securable to the table,
- wherein the housing at least partially receives the substrate therein,
- wherein a distance between the plurality of elongate conductive elements and the housing is less than 2 cm.
Dependencies are inferred from the claim text.