RFID tag for instrument handles

• US 7,253,736 B2
• Filed: 08/26/2004
• Issued: 08/07/2007
• Est. Priority Date: 08/26/2004
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: SDGI Holdings Incorporated (Medtronic Plc)
• Inventors: Nycz, Jeffrey H., Tethrake, Steven M., Pelo, Mark
• Primary Examiner(s): MULLEN, THOMAS J
• Application Number:
  US10/926,299
• Publication Number:
  US 20060043178A1
• Time in Patent Office: 1,076 Days
• Field of Search: 340/572.1, 340/572.7, 340/572.8, 340/5.92, 235/385, 235/492, 343872-873, 252/500
• US Class Current: 340/572.7
• CPC Class Codes: A61B 90/90 Identification means for patients or instruments, e.g. tags
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: H01L 2224/16225 the item being non-metallic, e.g. insulating substrate with or without metallisation
• CPC Class Codes: H01L 2224/18 High density interconnect [HDI] connectors; Manufacturing methods related thereto

Abstract

Disclosed are exemplary implementations of an instrument having an RFID tag formed in or on the material of its handle. One or more antenna segments of the RFID tag may be formed from conductive material printed on or otherwise applied to a surface of the material or they may be formed from a conductive foil or other preformed material applied to the surface of the elastic material of the instrument handle. The antenna segments may be configured to represent at least a portion of a graphic, such as a company logo, for viewing by a user or handler of the instrument. At least a portion of the RFID tag and surrounding of the instrument handle may be covered by a protective material to prevent damage to the RFID tag as a result of repeated handling or subjection of the instrument to autoclaving, sterilization or caustic materials.

Claims

1. An instrument comprising:

a handle having a non-metallic material positioned on at least a portion of the handle, the non-metallic material having at least one surface;

a radio frequency identification (RFID) chip positioned at a surface of the non-metallic material of the handle; and

one or more radio frequency (RF) antenna segments positioned at a surface of the non-metallic material of the handle and operably connected to the RFID chip, wherein the one or more antenna segments are formed on the surface in a graphic image pattern, the graphic image pattern comprising at least one graphic image selected from the group consisting of a company logo, a warning label, text, and combinations thereof, and further comprising a substantially transparent protective layer positioned over at least a portion of the one or more antenna segments.

2. The instrument as in claim 1, wherein the transparent protective layer is further positioned over at least a portion of the RFID chip and at least a portion of the surface of the non-metallic material of the handle.

3. The instrument as in claim 1, wherein at least one of the one or more RF antenna segments comprises conductive foil positioned on a surface of the non-metallic material of the handle.

4. The instrument as in claim 1, wherein at least one of the one or more RF antenna segments comprise conductive ink deposited on the surface of the elastic material of the handle.

5. The instrument as in claim 1, wherein the instrument is a surgical instrument.

6. The instrument as in claim 5, wherein the RF antenna segments comprise one or more materials that are substantially unaffected by an autoclaving process or a sterilization process.

7. The instrument as in claim 1, wherein the RFID chip is positioned at least partially in a depression formed in the non-metallic material of the handle.

8. The instrument as in claim 1, wherein the RFID chip is positioned on top of the surface of the non-metallic material of the handle.

9. The instrument as in claim 1, wherein the non-metallic material comprises an elastic material.

10. The instrument as in claim 9, wherein the elastic material includes at least one selected from the group consisting of:

silicone;

latex;

natural rubber;

synthetic rubber; and

elastic polymers.

11. A method for implementing a radio frequency identification (RFID) tag in an instrument handle having a non-metallic material containing at least one surface that is positioned on at least a portion of the instrument handle, the method comprising:

positioning an RFID chip at a surface of the non-metallic material of the instrument handle; and

depositing conductive material on a surface of the non-metallic material of the instrument handle to form one or more radio frequency (RF) antenna segments, wherein the conductive material is deposited in a pattern so as to form at least one graphic image selected from the group consisting of a company logo, a warning label, text, and combinations thereof; and

depositing a substantially transparent protective layer over at least a portion of the one or more RF antenna segments.

12. The method as in claim 11, wherein the protective layer is further positioned over at least a portion of the RFID chip and at least a portion of the surface of the non-metallic material of the handle.

13. The method as in claim 11, wherein the conductive material comprises conductive foil.

14. The method as in claim 11, wherein the conductive material comprises conductive ink.

15. The method as in claim 11, wherein the instrument is a surgical instrument.

16. The method as in claim 15, wherein the conductive material comprises one or more materials that are substantially unaffected by an autoclaving process or a sterilization process.

17. The method as in claim 11, further comprising forming a depression in a surface of the non-metallic material of the instrument handle, and wherein positioning the RFID chip comprises positioning the RFID chip at least partially in the depression.

18. The method as in claim 11, wherein positioning the RFID chip comprises positioning the RFID chip on top of a surface of the non-metallic material of the handle.

19. The method as in claim 11, wherein the non-metallic material comprises an elastic material.

20. The method as in claim 19, wherein the elastic material includes at least one selected from the group consisting of:

silicone;

latex;

natural rubber;

synthetic rubber; and

elastic polymers.