User interface related to a surgical provisional

• US 9,539,116 B2
• Filed: 12/12/2011
• Issued: 01/10/2017
• Est. Priority Date: 12/17/2010
• Status: Active Grant

• Current Assignee: Zimmer Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Zimmer Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: Claypool, Jody, Zuhars, Joel, Sullivan, Stuart, Rich, David B.
• Primary Examiner(s): Eiseman, Adam J
• Assistant Examiner(s): Warsi, Yasmeen S
• Application Number:
  US13/819,116
• Publication Number:
  US 20130253378A1
• Time in Patent Office: 1,856 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/1036 Measuring load distribution, e.g. podologic studies
• CPC Class Codes: A61F 2/30734 Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect
• CPC Class Codes: A61F 2/3868 with sliding tibial bearing
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2/461 of knees
• CPC Class Codes: A61F 2/4684 Trial or dummy prostheses
• CPC Class Codes: A61F 2002/3042 with a pin cooperating with a helical groove
• CPC Class Codes: A61F 2002/30556 for adjusting thickness
• CPC Class Codes: A61F 2002/30599 stackable

Abstract

Systems and methods for presenting force information related to a provisional is disclosed. A user interface may be provided for presenting objects on a display related to a knee joint, the user interface including a representation of an area of the knee joint for presentment on the display and a force center indicator for presentment on the display. The user interface providing an indication of when a position of the force center indicator corresponds to a desired position of the force center indicator.

Claims

1. A computing device, comprising:

a display having a first display screen;

an electronic controller; and

a memory device storing instructions executable by the electronic controller, the instructions being executable by the electronic controller to present a user interface on the first display screen, the user interface comprising;

a two-dimensional representation of an area of a provisional component, positionable between a femur and a tibia and including a plurality of sensors distributed over the area, the plurality of sensors including medical and lateral subsets of sensors, the medial subset of sensors comprising sensors from the plurality that are positioned between a center of the provisional component and a medial side of the provisional component, the lateral subset of sensors comprising sensors from the plurality that are positioned between a center of the provisional component and a lateral side of the provisional component, the representation comprising a medial-lateral direction and an anterior-posterior direction perpendicular to the medial-lateral direction;

a plurality of sensor icons having locations on the first display screen corresponding to the sensor locations on the provisional component; and

a medial force center indicator and a lateral force center indicator having respective positions on the first display screen determined by the electronic controller based on sensed force data and sensor locations from sensors in the medial subset of sensors and the lateral subset of sensors, respectively, the positions variable in the medial-lateral and anterior posterior directions based on force imbalance on the knee joint in the medial-lateral and anterior-posterior directions, respectively.

2. The computing device of claim 1, wherein the user interface further comprises:

an overall force center indicator having a position on the first display screen by the electronic controller based on data from all of the plurality of sensors.

3. The computing device of claim 1, wherein the user interface further comprises:

at least a first bounded region corresponding to a structurally sound knee.

4. The computing device of claim 3, wherein the user interface further comprises:

a first audio indication presented when one of the medial or lateral force center indicators is disposed within the first bounded region.

5. The computing device of claim 3, wherein the user interface further comprises:

a second bounded region disposed within the first bounded region and corresponding to a structurally optimized knee.

6. The computing device of claim 5, wherein the user interface further comprises:

a second audio indication presented when one of the medial or lateral force center indicators is disposed within the second bounded region.

7. The computing device of claim 1, wherein the user interface further comprises:

a representation of a post of the provisional component; and

a plurality of post sensor icons corresponding to sensors from the plurality that are disposed proximate the post.

8. The computing device of claim 7, wherein the plurality of post sensor icons are color-coded to have a first color when the corresponding sensor measures a force value below a threshold value and to have a second color when the corresponding sensor measures a force value above the threshold value.

9. The computing device of claim 1, wherein the user interface further comprises:

a spread indicator comprising a geometric shape displayed around one of the medial or lateral force center indicators, the geometric shape having a size indicative of a magnitude of forces applied to a tibial surface of the provisional component, the geometric shape having a shape indicative of a separation between the medial force center indicator and the lateral force center indicator.

10. The computing device of claim 1, wherein the user interface further comprises:

a path indicator showing a movement of one of the medial or lateral force center indicators as the knee joint moves from a first position to a second position, the path indicator having a first end and a second end corresponding to the first and second positions of the knee joint, respectively.

11. The computing device of claim 10, wherein the path indicator additionally displays clearable historical paths on the first display screen.

12. The computing device of claim 1, wherein the electronic controller communicates wirelessly with the provisional component.

13. The computing device of claim 1, wherein the display further comprises:

a second display screen including the two-dimensional representation of the area of the provisional component, and including icons at respective locations of all of the plurality of sensors, the icons visually indicating forces measured at respective sensors.

14. A computing device, comprising:

a display;

an electronic controller; and

a memory device storing instructions executable by the electronic controller, the instructions being executable by the electronic controller to present a user interface on the display, the user interface comprising;

a two-dimensional representation of an area of a provisional component, positionable between a femur and a tibia and including a plurality of sensors distributed over the area, the plurality of sensors including medial and lateral subsets of sensors, the medial subset of sensors comprising sensors from the plurality that are positioned between a center of the provisional component and a medial side of the provisional component, the lateral subset of sensors comprising sensors from the plurality that are positioned between a center of the provisional component and a lateral side of the provisional component, the representation comprising a medial lateral direction and an anterior-posterior direction perpendicular to the medial-lateral direction; and

a medial force center indicator and a lateral force center indicator having respective positions on the display determined by the electronic controller based on wirelessly received sensed force data and sensor locations from sensors in the medial subset of sensors and the lateral subset of sensors, respectively, the positions variable in the medial-lateral and anterior posterior directions based on force imbalance on the knee joint in the medial-lateral and anterior-posterior directions, respectively.

16. The computing device of claim 14, wherein the user interface further comprises:

a plurality of sensor icons having locations on the display corresponding to the sensor locations on the provisional component.

15. A method for balancing forces in a knee joint, the method comprising:

wirelessly receiving a plurality of sensed values from a corresponding plurality of sensors included in a provisional component, positionable between a femur and a tibia, the plurality of sensors including medial and lateral subsets of sensors, the medial subset of sensors comprising sensors from the plurality that are positioned between a center of the provisional component and a medial side of the provisional component, the lateral subset of sensors comprising sensors from the plurality that are positioned between a center of the provisional component and a lateral side of the provisional component, the sensors having respective locations on an area of the provisional component, the area of the provisional component having a medial-lateral direction and an anterior-posterior direction perpendicular to the medial-lateral direction, each sensed value being indicative of a force applied against the provisional component at the respective sensor location;

displaying on a display a two-dimensional representation of the area of the provisional component;

displaying on the display a plurality of sensor icons having locations on the display corresponding to the sensor locations on the provisional component;

displaying on the display a plurality of sensor icons having locations on the display corresponding to the sensor locations on the provisional component;

displaying on the display a medial force center indicator and a lateral force center indicator, the medial and lateral force center indicators having respective positions on the display determined from the received sensed values from the medial subset of sensors and the lateral subset of sensors, respectively, weighted by the locations of the respective sensors, the positions variable in the medial-lateral and anterior-posterior directions based on force imbalance on the knee joint in the medial-lateral and anterior-posterior directions, respectively;

displaying on the display a bounded region corresponding to a structurally sound knee; and

providing the display as visual feedback for a practitioner during knee surgery in which the forces become balanced in the knee joint, the balancing occurring when the force center indicator becomes positioned within the bounded region.