Printed circuit board with integrated antenna and implantable sensor processing system with integrated printed circuit board antenna

• US 7,800,078 B2
• Filed: 04/15/2004
• Issued: 09/21/2010
• Est. Priority Date: 04/15/2003
• Status: Active Grant

• Current Assignee: Senseonics, Incorporated (Senseonics Holdings, Inc.)
• Original Assignee: Sensors For Medicine and Science Incorporated
• Inventors: Lesho, Jeffrey C., Gerig, John S., McLeod, Benjamin N., Colvin, Arthur E. Jr., Zerwekh, Paul Samuel
• Primary Examiner(s): Porta; David P
• Assistant Examiner(s): Taningco; Marcus H
• Application Number:
  US10/824,587
• Publication Number:
  US 20040206916A1
• Time in Patent Office: 2,350 Days
• Field of Search: 250/458.1, 250/484.4, 600/316, 600/317
• US Class Current: 250/458.1
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14556 by fluorescence A61B5/14555 takes precedence
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/681 Wristwatch-type devices
• CPC Class Codes: G01N 21/6428 Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" in vivo A61B5/00; immunoassay G01N33/53
• CPC Class Codes: G01N 21/645 Specially adapted constructive features of fluorimeters
• CPC Class Codes: G01N 2201/1244 Ambient light detector, e.g. for invalidating
• CPC Class Codes: H05K 1/0306 Inorganic insulating substrates, e.g. ceramic, glass
• CPC Class Codes: H05K 1/165 incorporating printed inductors
• CPC Class Codes: H05K 2201/086 for inductive purposes, e.g. printed inductor with ferrite core
• CPC Class Codes: H05K 2201/09972 Partitioned, e.g. portions of a PCB dedicated to different functions; Boundary lines therefore; Portions of a PCB being processed separately or differently
• CPC Class Codes: H05K 2201/10106 Light emitting diode [LED]
• CPC Class Codes: H05K 3/403 Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof H05K3/4092 takes precedence

Abstract

A printed circuit device used in conjunction with inductive power and data transmission applications is formed substantially of ferrite material, with an inductive coil conductor formed around the substrate to increase the electromagnetic properties of the coil for both power and data transmission functions, thereby eliminating the need for a discrete ferrite core wire-wound coil to be connected to the circuit device.

Claims

1. A printed circuit device, comprising:

a substrate including a circuit component section and a coil section that is separate from the circuit component section, said substrate being formed substantially of ferrite material, said substrate having top and bottom surfaces, first and second side surfaces between said top and bottom surfaces along a major dimension thereof, and first and second end surfaces between said top and bottom surfaces along a minor dimension thereof;

at least one circuit component mounted to a main surface of said substrate in said circuit component section; and

a conductor formed around said coil section of said substrate and extending over one of said main surfaces and side surfaces in a coil pattern; and

wherein said printed circuit device is a component of an implantable sensor device that is capable of performing quantitative analyte measurements within a body of a living organism.

2. The printed circuit device of claim 1, wherein said at least one circuit component lead is routed through a via formed in said substrate.

3. The printed circuit device of claim 2, wherein said at least one circuit component comprises a light-emitting diode (LED) and a lead for said LED.

4. The printed circuit device of claim 3, wherein said lead for said LED is a drive lead.

5. The printed circuit device of claim 2, wherein said at least one circuit component lead is routed through a plurality of vias formed in said substrate.

6. The printed circuit device of claim 5, wherein a plurality of circuit component leads are routed through a plurality of vias formed in said substrate.

7. The printed circuit device of claim 1, wherein said coil is edge-joined around said substrate.

8. The printed circuit device of claim 1, wherein said coil is used for transfer of data signals to an external device.

9. The printed circuit device of claim 1, wherein said coil is used for inductive transfer of electric power from an external power supply.

10. The printed circuit device of claim 1, wherein said at least one circuit component comprises a light-emitting diode (LED) and wherein said printed circuit device further including at least one photodetector.

11. The printed circuit device of claim 1, further comprising a via formed in said substrate for routing of a conductor for a circuit component.

12. The printed circuit device of claim 1, wherein the conductor is printed on the substrate.

13. In an electronic device having an integrated circuit formed on a printed circuit device and an inductive coil for data and/or power transfer, the improvement comprising:

forming a substrate of said printed circuit device substantially of ferrite material such that said substrate includes a coil section and a separate circuit component section; and

forming the inductive coil around said coil section of said substrate of the printed circuit device and using said printed circuit device as a ferrite core for said inductive coil; and

wherein said printed circuit device is a component of an implantable sensor device that is capable of performing quantitative analyte measurements within a body of a living organism.

14. A fluorescence sensor device, comprising:

a light source for introducing light into a fluorescent indicator that interacts with a medium;

a photodetector for detecting light emitted by said fluorescent indicator in response to the introduced light, and for outputting a signal proportional to the detected light, the response of the fluorescent indicator varying in accordance with the presence and quantity of an analyte in the medium;

a coil for receiving electrical power from an external power supply, and for communicating said signal to an external processing device; and

a substrate including a circuit component section and a coil section that is separate from the circuit component section, said substrate being formed substantially of ferrite material, said light source and said photodetector being mounted to said circuit component section of said substrate, and said coil being formed around said coil section of said substrate such that said ferrite material increases induction characteristics of said coil.

15. The fluorescence sensor device of claim 14, wherein said coil extends around opposing surfaces of said substrate.

16. The fluorescence sensor device of claim 14, wherein said light source comprises a component that is routed through a via formed in said substrate.

17. The fluorescence sensor device of claim 14, wherein said coil is edge-wrapped around said substrate.

18. The fluorescence sensor device of claim 14, wherein said coil is used for communication of data signals to an external device.

19. The fluorescence sensor device of claim 14, wherein said coil is used for inductive reception of electric power from an external power supply.

20. The fluorescence sensor device of claim 14, wherein said device comprises an implantable sensor device that performs quantitative analyte measurements within a body of a living organism.

21. The fluorescence sensor device of claim 14, wherein said device comprises an implantable sensor device that performs qualitative analyte measurements within a body of a living organism.

22. The fluorescence sensor device of claim 20, wherein said light source comprises a light-emitting diode (LED) and said substrate further including at least one photodetector.

23. The fluorescence sensor device of claim 14, further comprising a via formed in said substrate for routing of a conductor for a circuit component.