HANDPIECE CALIBRATION DEVICE

• US 20080234664A1
• Filed: 03/19/2007
• Published: 09/25/2008
• Est. Priority Date: 03/19/2007
• Status: Active Grant

• Current Assignee: Zimmer Technology Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Zimmer Technology Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: May, Justin J., Griner, Adam M., Parisi, Raymond C.
• Granted Patent: US 7,794,462 B2
• Time in Patent Office: Days
• US Class Current: 606/1
• CPC Class Codes: A61B 17/1615 Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
• CPC Class Codes: A61B 17/17 Guides or aligning means for drills , mills, pins or wires
• CPC Class Codes: A61B 2017/1602 Mills
• CPC Class Codes: A61B 2090/062 penetration depth

Abstract

A calibration device for a milling instrument. The calibration device may be a burr guard which may be attached to the milling instrument. The calibration device may calibrate the milling instrument to provide a predetermined depth of alteration to an anatomical structure.

Claims

1. A system for use in altering an anatomical structure, the system comprising:

a surgical instrument;

a plurality of alteration devices attachable to said surgical instrument; and

a plurality of calibration devices attachable to said surgical instrument, each said calibration device defining a predetermined depth of alteration for each said alteration device.

2. The system of claim 1, wherein each said alteration device defines a first longitudinal dimension, said predetermined depth of alteration defined at least partially by said first longitudinal dimension.

3. The system of claim 2, wherein each said calibration device defines a second longitudinal dimension, said predetermined depth of alteration defined at least partially by said first longitudinal dimension and said second longitudinal dimension.

4. The system of claim 3, wherein each said calibration device includes a reference surface and said surgical instrument includes a receptacle for housing one of said alteration devices, said receptacle defining a proximal end, said second longitudinal dimension defined between said reference surface and said proximal end of said receptacle.

5. The system of claim 3, wherein at least one said calibration device defines a unique second longitudinal dimension.

6. The system of claim 2, wherein at least one said alteration device defines a unique first longitudinal dimension.

7. The system of claim 2, wherein said alteration device includes a cutting portion and a shaft, said shaft extending into and attached to said surgical instrument, said shaft including a proximal end and said cutting portion including a distal end, said first longitudinal dimension defined between said proximal end and said distal end.

8. The system of claim 1, wherein said calibration device includes a guidance structure for mating engagement with a guide attached to the anatomical structure.

9. The system of claim 1, wherein said calibration device includes a tracking element for use with a computer assisted surgery system.

10. A system for use in altering an anatomical structure, the system comprising:

alteration means for altering the anatomical structure; and

calibration means for calibrating a depth of alteration with said alteration means.

11. The system of claim 10, wherein said calibration means comprises reference means for use in calibrating the depth of alteration.

12. The system of claim 10, further comprising guide means for guiding said calibration means relative to the anatomical structure.

13. The system of claim 12, wherein said guide means comprises a computer assisted surgery system.

14. The system of claim 12, wherein said guide means comprises a guide structure attached to the anatomical structure.

15. The system of claim 10, further comprising tracking means for tracking said calibration means.

16. The system of claim 15, wherein said tracking means comprises a computer assisted surgery system.

17. A method for calibrating a surgical instrument, comprising the steps of:

providing a surgical instrument;

attaching one of a plurality of calibration devices to the surgical instrument;

attaching one of a plurality of alteration devices to the surgical instrument; and

calibrating a depth of alteration of the surgical instrument using the calibration device.

18. The method of claim 17, wherein each calibration device defines a first longitudinal dimension, said calibration step comprises calibrating a depth of alteration of the surgical instrument based at least partially on the first longitudinal dimension.

19. The method of claim 18, wherein each alteration device defines a second longitudinal dimension, said calibration step comprises calibrating a depth of alteration of the surgical instrument based at least partially on the first longitudinal dimension and the second longitudinal dimension.

20. The method of claim 17, further comprising the steps of providing a guide and engaging the calibration device with the guide.

21. The method of claim 17, further comprising the steps of providing a computer assisted surgery system and tracking the calibration device with the computer assisted surgery system.