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EP-4734841-A1 - TRACKING AND IMAGING COIL

EP4734841A1EP 4734841 A1EP4734841 A1EP 4734841A1EP-4734841-A1

Abstract

Implementing systems and methods for making a tracked device for use in a medical procedure. The methods comprise: obtaining a device configured to facilitate the medical procedure; arranging a first coil relative to a surface of the device so that (i) the first coil will partially surround or surround only a portion of the perimeter or circumference of the device and/or (ii) has a center axis that is not parallel to a center axis of the device; and disposing the first coil on or near the surface of the device such that the first coil is configured to receive a magnetic resonance signal from an imageable substance inside or outside the device during the medical procedure.

Inventors

  • WINKELMAN, Madison
  • WEDAN, STEVEN R.

Assignees

  • Imricor Medical Systems, Inc.

Dates

Publication Date
20260506
Application Date
20240620

Claims (20)

  1. 1. A method for making a tracked device for use in a medical procedure, comprising: obtaining a device configured to facilitate the medical procedure; arranging a first coil relative to a surface of the device so that (i) the first coil will partially surround or surround only a portion of the perimeter or circumference of the device and/or (ii) has a center axis that is not parallel to a center axis of the device; and disposing the first coil on or near the surface of the device such that the first coil is configured to receive a magnetic resonance signal from an imageable substance inside or outside the device during the medical procedure.
  2. 2. The method according to claim 1, wherein the device comprises an internal space for receiving a fluid and the first coil is configured to receive the magnetic resonance signal from the fluid.
  3. 3. The method according to claim 1, wherein the device comprises a catheter or a drug delivery system.
  4. 4. The method according to claim 1, wherein the first coil comprises a non-helical coil or a saddle coil.
  5. 5. The method according to claim 1, wherein the disposing comprises attaching a wire coil directly to the surface of the device.
  6. 6. The method according to claim 1, wherein the disposing comprises disposing a trace coil directly on the surface of the device.
  7. 7. The method according to claim 1, wherein the first coil comprises a non-helical coil extending an elongated length of the device configured to bend, deform, deflect or otherwise change shape.
  8. 8. The method according to claim 1, wherein the disposing comprises affixing a coil structure to the surface of the device, the coil structure comprising a trace coil disposed on a flexible circuit board.
  9. 9. The method according to claim 1, further comprising electrically connecting the first coil to an electronic component of the device.
  10. 10. The method according to claim 9, wherein the electronic component comprises a tuning and matching circuit.
  11. 11. The method according to claim 1, further comprising coupling at least one second coil on or near the surface of the device.
  12. 12. The method according to claim 11, wherein the at least one second coil is the same as or different than the first coil.
  13. 13. The method according to claim 11, wherein the first coil and the at least one second coil are arranged on the surface of the device to provide an array for an imaging device during the medical procedure.
  14. 14. The method according to claim 1, further comprising removing the first coil from the device and coupling a second coil to the device to interchange the removed first coil with the second coil.
  15. 15. A trackable medical device, comprising: a device configured to facilitate a medical procedure; and a first coil disposed on or near a surface of the device so that (i) the first coil partially surrounds or surrounds only a portion of the perimeter or circumference of the device, (ii) has a center axis that is not parallel to a center axis of the device, and (iii) is configured to receive a magnetic resonance signal from an imageable substance inside or outside the device during a medical procedure.
  16. 16. The trackable medical device according to claim 15, wherein the device comprises an internal space for receiving a fluid and the first coil is configured to receive the magnetic resonance signal from the fluid.
  17. 17. The trackable medical device according to claim 15, wherein the device comprises a catheter or a drug delivery system.
  18. 18. The trackable medical device according to claim 15, wherein the first coil comprises a non-helical coil or a saddle coil.
  19. 19. The trackable medical device according to claim 15, wherein the first coil comprises a wire coil coupled directly to the surface of the device.
  20. 20. The trackable medical device according to claim 15, wherein the first coil comprises a trace coil disposed directly on the surface of the device.

Description

TRACKING AND IMAGING COIL BACKGROUND CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application claims priory to and the benefit of U.S. Provisional Patent Application Number 63/511,253 which was filed on June 30, 2023. The contents of this Provisional Patent Application is incorporated herein by reference in its entirety. BACKGROUND [0002] Devices introduced into a patient utilizing magnetic resonance imaging (MRI) for image guidance often employ one or more magnetic resonance (MR) receive coil(s), or so- called “tracking coils” for the purpose of locating the device within the patient. SUMMARY [0003] The present document concerns methods for making a tracked device for use in a medical procedure. The methods comprise: obtaining a device configured to facilitate the medical procedure; arranging a first coil relative to a surface of the device so that (i) the first coil will partially surround or surround only a portion of the perimeter or circumference of the device and/or (ii) has a center axis that is not parallel (e.g., perpendicular or otherwise angled relative) to a center axis of the device; and disposing the first coil on or near the surface of the device such that the first coil is configured to receive a magnetic resonance signal from an imageable substance inside or outside the device during the medical procedure. [0004] The present document concerns trackable medical devices. The trackable medical devices comprise: a device configured to facilitate a medical procedure; and a first coil disposed on or near a surface of the device so that (i) the first coil partially surrounds or surrounds only a portion of the perimeter or circumference of the device, (ii) has a center axis that is not parallel or angled relative to a center axis of the device, and (iii) is configured to receive a magnetic resonance signal from an imageable substance inside or outside the device during a medical procedure. BRIEF DESCRIPTION OF THE DRAWINGS [0005] The following drawings are illustrative of particular embodiments of the present disclosure and therefore do not limit the scope of the present disclosure. The drawings are not to scale and are intended for use in conjunction with the explanations in the following detailed description. [0006] FIG. 1 provides an illustration of a conventional tracked device. [0007] FIG. 2, 3, 7 and 11 each provides an illustration of a tracked device in accordance with the present solution. [0008] FIGS. 4-6 each provides an illustration of a stack for a circuit board device in accordance with the present solution. [0009] FIGS. 8-10 provide illustrations of different trace patterns for coils in accordance with the present solution. [0010] FIGS. 12A-12C (collectively referred to herein as “FIG. 12”) provides illustration of another tracked device that can be deflected, bend or otherwise change shape. [0011] FIG. 13 provides a flow diagram of a method for making a device in accordance with the present solution. [0012] FIG. 14 provides an illustration of a magnetic resonance imaging system in which the devices of FIGS. 2-12 can be used. [0013] FIG. 15 provides a flow diagram for performing a medical procedure using the present solution of FIG. 14. [0014] FIG. 16 is a block diagram of a computing device. [0015] FIG. 17 provides an illustration of another tracked device. DETAILED DESCRIPTION [0016] As used in this document, the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art. As used in this document, the term “comprising” (or “comprises”) means “including (or includes), but not limited to.” [0017] In this document, when terms such as “first” and “second” are used to modify a noun, such use is simply intended to distinguish one item from another, and is not intended to require a sequential order unless specifically stated. The term “approximately,” when used in connection with a numeric value, is intended to include values that are close to, but not exactly, the number. For example, in some embodiments, the term “approximately” may include values that are within +/- 10 percent of the value. [0018] When used in this document, terms such as “top” and “bottom,” “upper” and “lower”, “above” and “below”, “over” or “under”, or “front” and “behind,” are not intended to have absolute orientations but are instead intended to describe relative positions of various components with respect to each other. For example, a first component may be an “upper” component and a second component may be a “lower” component when a device of which the components are a part is oriented in a first direction. The relative orientations of the components may be reversed, or the components may be on the same plane, if the orientation of the structure that contains the components is changed. The cl