Resonator for medical device

• US 8,058,593 B2
• Filed: 08/31/2009
• Issued: 11/15/2011
• Est. Priority Date: 05/24/2005
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Weber, Jan
• Primary Examiner(s): ROBINSON, DANIEL LEON
• Application Number:
  US12/551,153
• Publication Number:
  US 20090319025A1
• Time in Patent Office: 806 Days
• Field of Search: 219/635, 219/636, 219/637, 219/638, 219/639, 219/640, 219/641, 219/642, 219/643, 219/644, 219/645, 623/1.1, 623/1.11, 623/1.15, 623/1.27, 623/1.3, 623/1.32, 623/1.44
• US Class Current: 219/635
• CPC Class Codes: A61B 2090/3954 magnetic, e.g. NMR or MRI
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: G01R 33/288 Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room

Abstract

A device resonator for medical device is provided. The resonator device includes a helical structure and a capacitor structure. The resonator device can be used in conjunction with a medical device, including a stent.

Claims

1. A method, comprising:

implanting a first resonator device and a stent;

measuring the frequency response of the first resonator device and the stent;

modifying a second resonator device based on the measured frequency response of the first resonator device and the stent; and

implanting the second resonator device in proximity to the first resonator device and the stent.

2. The method of claim 1, where modifying the second resonator device includes changing a capacitance value of the second resonator device.

3. The method of claim 1, where modifying the second resonator device includes modifying an induction coil of the second resonator device.

4. The method of claim 1, where modifying the second resonator device includes modifying a resistor in the second resonator device.

5. The method of claim 1, including producing a resonant radio frequency field with the first resonator device and the second resonator device.

6. The method of claim 5, including focusing the resonant radio frequency field through a lumen of the stent.

7. The method of claim 6, including deriving images from within the lumen of the stent based on the resonant radio frequency field focused through the lumen of the stent.

8. The method of claim 1, including positioning at least a portion of the first induction coil over a first portion of the stent.

9. The method of claim 1, where the first resonator device includes a first induction coil and a second induction coil coupled in series, and where the second induction coil extends beyond a first end away from a second end of the stent.

10. A method, comprising:

implanting a first resonator device and a stent, where the first resonator device includes a first induction coil with at least one turn and the stent includes a first end and a second end, and where at least one turn of the first induction coil extends beyond the first end away from the second end of the stent;

measuring the frequency response of the first resonator device and the stent;

modifying a second resonator device based on the measured frequency response of the first resonator device and the stent, where the second resonator device includes a second induction coil with at least one turn; and

implanting the second resonator device in proximity to the first resonator device and the stent.

11. The method of claim 10, including coupling the first induction coil and the second induction coil in series through a connection member and a first capacitor.

12. The method of claim 11, including coupling the first induction coil and the second induction coil in series through the connection member, the first capacitor, and a resistor.

13. The method of claim 11, including coupling the first induction coil and the second induction coil in series through the connection member, the first capacitor, and the stent.

14. The method of claim 11, including coupling the first induction coil and the second induction coil in series through the connection member, the first capacitor, the stent, and a resistor.

15. The method of claim 10, where at least one turn of the second induction coil extends from the second end away from the first end of the stent.

16. A method, comprising:

implanting a first resonator device and a stent, where the first resonator device is adjacent a first end of the stent;

measuring the frequency response of the first resonator device and the stent;

modifying a second resonator device based on the measured frequency response of the first resonator device and the stent; and

implanting the second resonator device in proximity to the first resonator device and the stent, where the second resonator device is adjacent a second end of the stent.

17. The method of claim 16, where the first resonator device and the second resonator device are physically and electrically isolated from the stent.

18. The method of claim 16, where a connection member separates and couples the first resonator device and the second resonator device through the stent.

19. The method of claim 18, where the connection member extends through a lumen of the stent.

20. The method of claim 18, where the connection member extends past an exterior surface of the stent.