System and method for displaying joint force data
First Claim
1. A system comprising:
- a sensor module comprising a (i) tibial paddle configured to be inserted between a patient'"'"'s tibia and femur;
(ii) a rigid handle secured to and extending from the tibial paddle along a common plane at an angle acute to an anterior-posterior midline of the tibial paddle such that the tibial paddle is positionable in a patient'"'"'s knee joint with the rigid handle without eversion or subluxation of the patient'"'"'s patella, (iii) a sensor array positioned in the tibial paddle and comprising a plurality of pressure sensors configured to generate sensor signals indicative of the joint force of a patient'"'"'s knee joint, and (iv) a circuit positioned in the handle and configured to receive the sensor signals from the sensor array and to transmit joint force data based on the sensor signals;
a computer assisted orthopaedic surgery system comprising a display and a receiver circuit configured to receive the joint force data from the sensor module, the computer assisted orthopaedic surgery system configured to;
determine position data indicative of a position of the patient'"'"'s femur and a patient'"'"'s tibia;
display an image of the patient'"'"'s femur and the patient'"'"'s tibia based on the position data;
determine a medial force value indicative of a medial component of the joint force based on the joint force data received from the sensor module;
determine a lateral force value indicative of a lateral component of the joint force based on the joint force data received from the sensor module;
determine a total force value as a sum of the medial force value and the lateral force value;
determine a medial percentage value as a function of the medial force value and the total force value;
determine a lateral percentage value as a function of the lateral force value and the total force value; and
display (i) the medial percentage value, (ii) the lateral percentage value, and (iii) an icon indicative of the relative medial-lateral balance of the joint force based the medial percentage value and the lateral percentage value.
6 Assignments
0 Petitions
Accused Products
Abstract
A computer assisted orthopaedic system includes a sensor module, a display, and a computer coupled to the display. The sensor module is configured to be positioned in a knee joint of a patient and transmit joint force data indicative of a joint force of the patient'"'"'s knee joint. The computer includes a receiver circuit to receive the joint force data. The computer is configured to determine position data indicative of a position of a patient'"'"'s femur and a patient'"'"'s tibia and display an image of the patient'"'"'s femur and the patient'"'"'s tibia based on the position data. The computer is also configured to determine a medial force value and a lateral force value based on the joint force data and display the medial and lateral force values on the display.
246 Citations
20 Claims
-
1. A system comprising:
-
a sensor module comprising a (i) tibial paddle configured to be inserted between a patient'"'"'s tibia and femur;
(ii) a rigid handle secured to and extending from the tibial paddle along a common plane at an angle acute to an anterior-posterior midline of the tibial paddle such that the tibial paddle is positionable in a patient'"'"'s knee joint with the rigid handle without eversion or subluxation of the patient'"'"'s patella, (iii) a sensor array positioned in the tibial paddle and comprising a plurality of pressure sensors configured to generate sensor signals indicative of the joint force of a patient'"'"'s knee joint, and (iv) a circuit positioned in the handle and configured to receive the sensor signals from the sensor array and to transmit joint force data based on the sensor signals;a computer assisted orthopaedic surgery system comprising a display and a receiver circuit configured to receive the joint force data from the sensor module, the computer assisted orthopaedic surgery system configured to; determine position data indicative of a position of the patient'"'"'s femur and a patient'"'"'s tibia; display an image of the patient'"'"'s femur and the patient'"'"'s tibia based on the position data; determine a medial force value indicative of a medial component of the joint force based on the joint force data received from the sensor module; determine a lateral force value indicative of a lateral component of the joint force based on the joint force data received from the sensor module; determine a total force value as a sum of the medial force value and the lateral force value; determine a medial percentage value as a function of the medial force value and the total force value; determine a lateral percentage value as a function of the lateral force value and the total force value; and display (i) the medial percentage value, (ii) the lateral percentage value, and (iii) an icon indicative of the relative medial-lateral balance of the joint force based the medial percentage value and the lateral percentage value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A system comprising:
-
a sensor module comprising a tibial paddle configured to be inserted between a patient'"'"'s tibia and femur, a rigid handle secured to and extending from the tibial paddle along a common plane at an angle acute to an anterior-posterior midline of the tibial paddle such that the tibial paddle is positionable in the patient'"'"'s knee joint with the rigid handle without eversion or subluxation of the patient'"'"'s patella, and a sensor array positioned within the tibial paddle, the sensor array having (i) a plurality of medially located pressure sensors configured to generate medial sensor signals indicative of a medial joint force between a patient'"'"'s tibia and a medial condyle of the patient'"'"'s femur and (ii) a plurality of laterally located pressure sensors configured to generate lateral sensor signals indicative of a lateral joint force between the patient'"'"'s tibia and a lateral condyle of the patient'"'"'s femur, the sensor module being configured to wirelessly transmit medial force data indicative of the medial joint force and lateral force data indicative of the lateral force; a computer assisted orthopaedic surgery system comprising a display and a receiver circuit configured to receive the medial and lateral force data, the computer being configured to; determine position data indicative of a position of a patient'"'"'s femur and a patient'"'"'s tibia; display an image of the patient'"'"'s femur and the patient'"'"'s tibia based on the position data; determine a medial force value based on the medial joint data; determine a lateral force value based on the lateral joint data; determine a total force value as a sum of the medial force value and the lateral force value; determine a medial percentage value as a function of the medial force value and the total force value; determine a lateral percentage value as a function of the lateral force value and the total force value; and display the medial percentage value and the lateral percentage value on the display. - View Dependent Claims (13, 14, 15, 16, 17, 18)
-
-
19. A method for operating a computer assisted orthopaedic surgery system, the method comprising:
-
determining position data indicative of a position of a patient'"'"'s femur and a patient'"'"'s tibia; displaying an image of the patient'"'"'s femur and the patient'"'"'s tibia based on the position data; receiving joint force data indicative of a joint force between the patient'"'"'s femur and tibia from a sensor module having (i) a tibial paddle inserted between the patient'"'"'s tibia and femur, (ii) a rigid handle secured to and extending from the tibial paddle along a common plane at an angle acute to an anterior-posterior midline of the tibial paddle such that the tibial paddle is positionable in the patient'"'"'s knee joint with the rigid handle without eversion or subluxation of the patient'"'"'s patella, (iii) a sensor array positioned in the tibial paddle and configured to generate sensor signals indicative of the joint force, and (iv) a circuit positioned in the handle and configured to receive the sensor signals from the sensor array and to transmit the joint force data to the computer assisted orthopaedic surgery system; determining a medial force value indicative of a medial component of the joint force based on the joint force data, determining a lateral force value indicative of a lateral component of the joint force based on the joint force data, and displaying the medial force value and the lateral force value on the display. - View Dependent Claims (20)
-
Specification