Surgical cutting accessory with encapsulated RFID chip

• US 8,157,826 B2
• Filed: 12/14/2010
• Issued: 04/17/2012
• Est. Priority Date: 08/08/2002
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Deng, Wenjie, Kauker, Barry J.
• Primary Examiner(s): Bui, Vy Q
• Application Number:
  US12/928,521
• Publication Number:
  US 20110089248A1
• Time in Patent Office: 490 Days
• Field of Search: 606/170, 606/171, 606/174, 606/180, 606/185, 604/65
• US Class Current: 606/170
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders

Abstract

A cutting accessory for use with a powered surgical tool. The accessory includes a drive shaft to which an outer hub is attached. Internal to the outer hub is a self-contained transponder formed from an RFID chip and a coil of electrical conductor embedded within a solid substrate or encapsulated within a plastic enclosure. The transponder wirelessly communicates one or more pieces of information concerning the identity and operation of the accessory to the surgical tool when the accessory is attached to the surgical tool.

Claims

1. An identification module for a removable cutting accessory of a surgical tool, comprising:

a solid state chip having memory fields storing identification information for a removable cutting accessory having a cutting edge and operational information concerning the removable cutting accessory, the operational information including operating speeds for the removable cutting accessory;

an antenna in electrical communication with said solid state chip; and

an enclosure in which is encapsulated said solid state chip and said antenna,

wherein said identification module is configured for removable securement within a removable cutting accessory and is configured to wirelessly communicate the identification information and the operational information to a surgical tool when the removable cutting accessory is attached to the surgical tool.

2. The identification module according to claim 1, wherein said antenna comprises one or more turns of a length of electrical conductor.

3. The identification module according to claim 2, wherein said enclosure is constructed of plastic.

4. The accessory according to claim 3, wherein said enclosure comprises an annular base circumscribed by inner and outer opposed sidewalls, respectively, that define an interior channel open to an exterior through an annular opening.

5. The accessory according to claim 4, wherein said solid state chip and the length of electrical conductor are inserted through said annular opening into said interior channel and said interior channel is sealed off by filling said channel with a sealant.

6. The identification module according to claim 1, wherein said enclosure is formed in a shape of a ring.

7. The identification module according to claim 6, wherein a base of the solid state chip is selectively configured with one or more curves or bends to conform with the shape of the enclosure.

8. The identification module according to claim 1, wherein said solid state chip comprises a solid state RFID chip, and the operational information stored in the memory fields comprises a suggested operating lifetime for the removable cutting assembly.

9. The identification module according to claim 1, wherein the operational information includes authorization codes for determining whether it is appropriate to actuate a motor of a surgical tool and includes a suggested operating lifetime for the removable cutting accessory.

10. An identification module for a removable cutting accessory for actuation by a powered surgical handpiece, comprising:

a solid state RFID chip having data fields storing identification information and operational information concerning the removable cutting accessory including the type of cutting accessory, and the initial, preferred minimum and preferred maximum operating speeds of the cutting accessory;

an antenna in electrical communication with said solid state RFID chip; and

an enclosure encapsulating said solid state RFID chip and antenna,

wherein said identification module is removably secured within a removable cutting accessory and is configured to wirelessly communicate the identification information and the operational information to a powered handpiece when the removable cutting accessory is attached thereto.

11. The identification module according to claim 10, wherein said antenna comprises one or more turns of a length of electrical conductor.

12. The identification module according to claim 11, wherein said enclosure is constructed of plastic in a shape of a ring.

13. The identification module according to claim 12, wherein a base of the RFID chip is selectively configured with one or more curves or bends to conform with the ring shape of the enclosure.

14. The identification module according to claim 13, wherein the data fields storing the identification and operational information include a suggested operating lifetime for the cutting accessory and a batch lot in which the cutting accessory was manufactured.

15. The identification module according to claim 14, wherein the operational information includes authorization codes for determining whether it is appropriate to actuate a motor of a handpiece and includes a suggested operating lifetime for the removable cutting accessory.

16. The identification module according to claim 10, wherein the data fields storing the identification and operational information include a suggested operating lifetime for the cutting accessory and a batch lot in which the cutting accessory was manufactured.

17. The identification module according to claim 16, wherein the operational information includes authorization codes for determining whether it is appropriate to actuate a motor of a handpiece and includes a suggested operating lifetime for the removable cutting accessory.