Medical system having improved telemetry

• US 6,298,271 B1
• Filed: 07/19/1999
• Issued: 10/02/2001
• Est. Priority Date: 07/19/1999
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Weijand, Koen J
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US09/356,340
• Time in Patent Office: 806 Days
• Field of Search: 600/510, 128/903, 607/32, 607/60
• US Class Current: 607/60
• CPC Class Codes: A61N 1/37223 Circuits for electromagnetic coupling
• CPC Class Codes: A61N 1/37229 Shape or location of the implanted or external antenna
• CPC Class Codes: H01Q 1/2208 associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: H01Q 21/29 Combinations of different interacting antenna units for giving a desired directional characteristic H01Q25/00 takes precedence
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H04B 5/26 using coils

Abstract

A medical system having improved telemetry, the medical system featuring a programmer having a programming head. The system provides improved telemetry due to the unique antenna scheme within the programmer head. The antenna scheme utilizes a first antenna and a second antenna, the antennas disposed in a concentric and co-planar manner. This concentric and co-planar disposition permits the programmer head to be of much smaller and, thus, a more portable size than was previously possible. The antenna is further coupled with circuitry or software or both to reduce far field response (noise). The antenna may be constructed using printed circuit board, and thus be integrated with circuitry.

Claims

1. A medical system having improved telemetry comprising:

a first antenna in a first plane;

a second antenna in the first plane; and

the first and the second antenna coupled to means for reducing far field response (noise).

2. The system according to claim 1 further comprising the first antenna having a first lumen, and the second antenna positioned within first lumen.

3. The system according to claim 1 further comprising a third antenna, wherein the third antenna being coupled to means for reducing far field response.

4. The system according to claim 1 wherein the first antenna is circular in the first plane.

5. The system according to claim 1 wherein the first antenna is polygonal in the first plane.

6. The system according to claim 1 wherein the first antenna and the second antenna are coaxial.

7. The system according to claim 6 wherein the first antenna is circular in the first plane.

8. The system according to claim 6 wherein the first antenna is polygonal in the first plane.

9. The system according to claim 1 wherein the first antenna and the second antenna are non-coaxial.

10. The system according to claim 9 wherein the first antenna is circular in the first plane.

11. The system according to claim 9 wherein the first antenna is polygonal in the first plane.

12. The system according to claim 1 wherein first antenna includes a first number of turns.

13. The system according to claim 12 wherein the second antenna has a second number of turns.

14. The system according to claim 13 wherein the first number of turns is different than the second number of turns.

15. The system according to claim 1 further comprising means for providing therapy to a patient.

16. The system according to claim 15 wherein said means for providing therapy to a patient comprises means for providing electrical stimulation signals to the patient.

17. The system according to claim 16 wherein said means for providing therapy to a patient comprises means for providing drugs to the patient.

18. The system according to claim 1 further comprising means for monitoring a physiologic parameter of a patient.

19. The system according to claim 18 wherein the means for monitoring a physiologic parameter of a patient comprises means for monitoring a cardiac signal of the patient.