Servo-controlled impacting device for orthopedic implants

• US 7,001,393 B2
• Filed: 11/09/2004
• Issued: 02/21/2006
• Est. Priority Date: 11/10/2003
• Status: Expired due to Fees

• Current Assignee: Rush University Medical Center (Rush University)
• Original Assignee: Rush University Medical Center (Rush University)
• Inventors: Schwenke, Thorsten, Wimmer, Markus A.
• Primary Examiner(s): Robert, Eduardo C.
• Assistant Examiner(s): Araj, Michael J.
• Application Number:
  US10/984,497
• Publication Number:
  US 20050101962A1
• Time in Patent Office: 469 Days
• Field of Search: 606/86, 606/99, 606/100
• US Class Current: 606/86.00R
• CPC Class Codes: A61F 2/32 for the hip
• CPC Class Codes: A61F 2/34 Acetabular cups
• CPC Class Codes: A61F 2/36 Femoral heads ; Femoral endoprostheses
• CPC Class Codes: A61F 2/367 Proximal or metaphyseal parts of shafts trochanteric devices connected to said proximal parts A61F2/30739
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/4607 of hip femoral endoprostheses
• CPC Class Codes: A61F 2/4618 of cartilage
• CPC Class Codes: A61F 2002/2839 Bone plugs or bone graft dowels
• CPC Class Codes: A61F 2002/30759 Mosaicplasty, i.e. using a plurality of individual cartilage plugs for filling a substantial cartilage defect
• CPC Class Codes: A61F 2002/3611 Heads or epiphyseal parts of femur
• CPC Class Codes: A61F 2002/3625 Necks
• CPC Class Codes: A61F 2002/3631 with an integral complete or partial peripheral collar or bearing shoulder at its base
• CPC Class Codes: A61F 2002/4666 for measuring force, pressure or mechanical tension
• CPC Class Codes: A61F 2002/4681 by applying mechanical shocks, e.g. by hammering
• CPC Class Codes: A61F 2002/4688 having operating or control means
• CPC Class Codes: A61F 2002/4694 pneumatic

Abstract

A servo-controlled impacting device for orthopedic implants includes one or more sensors, an impacting device, and a controller with an interface. The controller is configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor. The interface is coupled to the controller and is configured to enable parameters to be set related to the operation of the controller.

Claims

1. A servo-controlled impacting device for orthopedic implants, the device comprising:

a controller configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor; and

an interface coupled to the controller and configured to enable parameters to be set related to the operation of the controller;

wherein the at least one sensor comprises a sensor on the orthopedic implant.

2. A servo-controlled impacting device for orthopedic implants, the device comprising:

a controller configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor; and

an interface coupled to the controller and configured to enable parameters to be set related to the operation of the controller;

wherein the at least one sensor comprises a vibrational sensor.

3. A servo-controlled impacting device for orthopedic implants, the device comprising:

a controller configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor; and

an interface coupled to the controller and configured to enable parameters to be set related to the operation of the controller;

wherein the feedback signals comprise force, pressure, or acceleration signals.

4. A servo-controlled impacting device for orthopedic implants, the device comprising:

a controller configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor; and

an interface coupled to the controller and configured to enable parameters to be set related to the operation of the controller;

wherein the parameters comprise implant shape and properties, bone condition, resistance due to insertion, or a desired press-fit result.

5. A servo-controlled impacting device for orthopedic implants, the device comprising:

a controller configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor; and

an interface coupled to the controller and configured to enable parameters to be set related to the operation of the controller;

wherein the impactor is pneumatically driven.

6. A servo-controlled impacting device for orthopedic implants, the device comprising:

a controller configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor; and

an interface coupled to the controller and configured to enable parameters to be set related to the operation of the controller;

wherein the controller determines control signals based on pre-programmed profiles and feedback signals from the at least one sensor.

7. A servo-controlled impacting device for orthopedic implants, the device comprising:

a controller configured to provide control signals to an impactor in response to feedback signals from at least one sensor proximate an orthopedic implant subject to a force applied by the impactor; and

an interface coupled to the controller and configured to enable parameters to be set related to the operation of the controller;

wherein the orthopedic implant comprises an osteochondral plug.

8. A surgical device comprising:

an orthopedic implant impactor configured to impact an orthopedic implant with sufficient force to insert the orthopedic implant; and

a controller that communicates control signals to the orthopedic implant impactor, wherein the control signals are based on pre-programmed data and feedback signals received from one or more sensors.

9. The device of claim 8, wherein the control signals correspond to input parameters, the input parameters comprising implant shape, bone condition, resistance, and desired press-fit result.

10. The device of claim 8, wherein the controller is programmed to control the orthopedic implant impactor'"'"'s frequency.

11. The device of claim 8, wherein the feedback signals are of a acoustic nature.

12. The device of claim 8, where one of the one or more sensors is coupled to the orthopedic implant impactor.

13. An impacting device for orthopedic implant surgery, the device comprising:

means for impacting an orthopedic implant to insert the orthopedic implant in a bone;

means for sensing conditions of the implanting;

means for determining control signals based on pre-programmed references and sensed conditions; and

means for communicating the determined control signals to adjust force applied by the impacting means.

14. The device of claim 13, further comprising means for displaying orthopedic implant parameters and sensed conditions.

15. The device of claim 13, further comprising means for interfacing with the means for determining control signals.

16. The device of claim 13, wherein the pre-programmed references comprise implant parameters, bone parameters, and result parameters.

17. The device of claim 13, wherein the means for impacting an orthopedic implant is electrically driven.

18. A control device for use in osteochondral plug transplantation, the device comprising:

means for impacting a grafted osteochondral plug to insert the osteochondral plug into a pre-drilled hole;

means for sensing conditions of the impacting;

means for determining control signals based on sensed conditions; and

means for communicating the determined control signals to adjust force applied by the impacting means.