Fluorolucent magnetic field generator

Patent metadata

Field	Value
Publication number	US-11617511-B2
Application number	US-201716461297-A
Country	US
Kind code	B2
Filing date	Nov 21, 2017
Priority date	Nov 21, 2016
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

A transmitting element for generating a magnetic field for tracking of an object includes a first spiral trace that extends from a first outer origin inward to a central origin in a first direction. A second spiral trace can extend from the central origin outward to a second outer origin in the first direction. The second spiral trace can extend from the central origin to the second outer origin in the first direction. The first spiral trace and the second spiral trace can be physically connected at the central origin to form the fluorolucent magnetic transmitting element and at least a portion of the first spiral trace overlaps at least a portion of the second spiral trace.

First claim

What is claimed is:

1. A fluorolucent magnetic transmitting element for generating a magnetic field for tracking of an object, comprising the following:
a first spiral arm that extends from a first outer origin inward to a central origin in a first direction, the first spiral arm including a first spiral trace that extends through an interior of the first spiral arm from the first outer origin inward to the central origin in the first direction; and
a second spiral arm that extends from the central origin outward to a second outer origin in the first direction, the second spiral arm including a second spiral trace that extends through an interior of the second spiral arm from the central origin outward to the second outer origin in the first direction, wherein:
the first spiral arm and the second spiral arm are formed from an insulative material;
the first spiral trace and the second spiral trace are physically connected at the central origin to form the fluorolucent magnetic transmitting element; and
at least a portion of the first spiral arm overlaps at least a portion of the second spiral arm.

2. The fluorolucent magnetic transmitting element of claim 1 , wherein the first spiral trace and the second spiral trace are formed from a continuous piece of material.

3. The fluorolucent magnetic transmitting element of claim 2 , wherein the continuous piece of material that forms the first spiral trace and the second spiral trace is creased at the central origin.

4. The fluorolucent magnetic transmitting element of claim 3 , wherein the continuous piece of material is formed from aluminum.

5. The fluorolucent magnetic transmitting element of claim 1 , wherein:
the first spiral trace and the second spiral trace are cut from a planar piece of material; and
the first spiral trace and the second spiral trace are creased at the central origin.

6. The fluorolucent magnetic transmitting element of claim 1 , wherein a first electrical terminal is disposed on the first spiral trace at the first outer origin and a second electrical terminal is disposed on the second spiral trace at the second outer origin.

7. The fluorolucent magnetic transmitting element of claim 6 , wherein the first spiral trace and the second spiral trace are configured to transmit an electrical current from the first electrical terminal to the second electrical terminal in the first direction and to produce a magnetic field.

Assignees

• St Jude Medical Int Holding Sarl
• St Jude Medical Int Holdings Sarl

Inventors

• Hill Anthony D
• Hauck John
• Albu Ryan M
• Curran Timothy G
• Link Ryan

Classifications

• G01B7/003

  for measuring position, not involving coordinate determination (coordinate measuring G01B7/004) · CPC title

• A61B2017/0092

  for X-rays · CPC title

• A61B2034/2051

  Electromagnetic tracking systems · CPC title

• H01F5/00

  Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00) · CPC title

• A61B5/0035 Primary

  adapted for acquisition of images from more than one imaging mode, e.g. combining MRI and optical tomography · CPC title