ORTHOPAEDIC NAVIGATION SYSTEM

• US 20140005531A1
• Filed: 12/16/2011
• Published: 01/02/2014
• Est. Priority Date: 12/20/2010
• Status: Abandoned Application

• Current Assignee: Eco Verde Technologies Inc.
• Original Assignee: Eco Verde Technologies Inc.
• Inventors: Taylor, Nicola Joanne
• Application Number:
  US13/995,854
• Publication Number:
  US 20140005531A1
• Time in Patent Office: Days
• US Class Current: 600/424
• CPC Class Codes: A61B 2034/2048 using an accelerometer or inertia sensor
• CPC Class Codes: A61B 2090/372 Details of monitor hardware
• CPC Class Codes: A61B 2090/502 Headgear, e.g. helmet, spectacles
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 5/06 Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence

Abstract

An orthopaedic navigation system (1) has (a) a reference point sensor (10) for connection to a body to transmit a reference position signal; (b) a trial sensor (20) for connection to a trial implant and to transmit a trial position signal indicating its position relative to the reference point sensor; (c) an implant sensor (41) for connection to a first implant and to transmit a first implant position signal indicating its position relative to the reference position sensor; (d) a computer (30) having a receiver to (i) receive said reference point signal and trial position signal to create a predetermined position value, (ii) receive said reference point signal and first implant position signal to create a comparison position value, and having a transmitter to transmit output signals of the predetermined position value; and (e) a screen (51) to receive said visual signals and create a display to compare the predetermined position value relative to the comparison value, which display can be seen by a user while simultaneously viewing the body.

Claims

1. An orthopaedic system, for providing information as to the position of a prosthesis compared to a desired position of the prosthesis, comprising:

(a) a first sensor for connection to a prosthesis and to transmit a prosthesis position signal;

(b) a second sensor for connection to a body and to transmit a reference position signal;

(c) a third sensor for connection to a trial prosthesis and to transmit a trial prosthesis signal;

(d) a computer having a receiver to receive (i) said prosthesis position signal and said reference position signal, and create therefrom a first position value, and (ii) said reference position signal and said trial prosthesis signal and create therefrom a second position value, and programmed to compare said first position value with said second position value; and

(e) an output to provide information indicating the proximity of the first position value to the second position value.

2. The system of claim 1, wherein the output varies according to the proximity of the first position value to the second position value.

3. The system of claim 1, wherein the output comprises a visual signal.

6. The system of claim 3, comprising a direct to eye display.

13. The system of claim 1, wherein the prosthesis is a hip implant, a knee implant, a shoulder implant or an elbow implant.

14. The system of claim 1, comprising:

(a) a reference point sensor (the second sensor) for connection to a fixed point on a body to transmit a reference position signal;

(b) a trial sensor (the third sensor) for connection to a trial implant and to transmit a trial position signal indicating the position of the trial implant relative to the reference point sensor;

(c) an implant sensor (the first sensor) for connection to a first implant and to transmit a first implant position signal indicating the position of the first implant relative to the reference position sensor;

(d) a computer having a receiver to (i) receive said reference point signal and trial position signal to create therefrom a predetermined position value, (ii) receive said reference point signal and first implant position signal to create therefrom a comparison position value, said computer having a transmitter to transmit output signals of the predetermined position value; and

(e) an output to compare the predetermined position value with the comparison position value.

4-5. -5. (canceled)

7-12. -12. (canceled)

15. (canceled)

16. A kit for use in providing information as to the position of a prosthesis compared to a desired position of the prosthesis, comprising:

(a) a prosthesis comprising a first sensor to transmit a prosthesis position signal;

(b) a second sensor for connection to a body to transmit a reference position signal;

(c) a trial prosthesis having a third sensor to transmit a trial prosthesis signal;

(d) a computer having a receiver to receive (i) said prosthesis position signal and said reference position signal and create therefrom a first position value, and (ii) said reference position signal and said trial prosthesis signal and create therefrom a second position value, and programmed to compare said first position value with said second position value; and

(e) an output to provide information indicating the proximity of the first position value to the second position value.

23. The kit of claim 16, wherein the prosthesis is a hip implant, a knee implant, a shoulder implant or an elbow implant and the trial prosthesis is a corresponding trial implant for performing a trial reduction to determine suitable position for the hip implant, knee implant, shoulder implant or elbow implant.

27. The kit of claim 16, wherein the output comprises a visual signal.

28. The kit of claim 16, comprising a direct to eye display.

29. The kit of claim 16, comprising:

(a) a reference point sensor (the second sensor) for connection to a fixed point on a body to transmit a reference position signal;

(b) a trial implant comprising a trial sensor (the third sensor) to transmit a trial position signal indicating the position of the trial implant relative to the reference point sensor;

(c) a first implant comprising an implant sensor (the first sensor) to transmit a first implant position signal indicating the position of the first implant relative to the reference position sensor;

(d) a computer having a receiver to (i) receive said reference point signal and trial position signal to create therefrom a predetermined position value, (ii) receive said reference point signal and first implant position signal to create therefrom a comparison position value, said computer having a transmitter to transmit output signals of the predetermined position value; and

(e) an output to receive said output signals and to create an output to compare the predetermined position value with the comparison position value.

30. The kit of claim 29, further comprising a screen adapted to receive said visual signals and to create a display to compare the predetermined position value relative to the comparison value, said screen being adapted to be seen by an operator whilst simultaneously viewing a patient.

17-22. -22. (canceled)

24-26. -26. (canceled)

31. A method of providing information as to the position of a prosthesis compared to a desired position of the prosthesis, comprising:

(a) associating a first sensor with the prosthesis, said first sensor capable of transmitting a prosthesis position signal;

(b) attaching a second sensor to a body to transmit a reference position signal;

(c) associating a third sensor with a trial prosthesis to transmit a trial prosthesis signal

(d) operating a computer having a receiver to receive (i) said prosthesis position signal and said reference position signal and create therefrom a first position value, and (ii) said reference position signal and said trial prosthesis signal and create therefrom a second position value, and programmed to compare said first position value with said second position value; and

(e) generating an output from the computer that indicates the proximity of the first position value to the second position value.

37. The method of claim 31, comprising moving the trial implant until it is in a desired position and then transmitting the trial prosthesis signal.

38. The method of claim 31, wherein the prosthesis is a hip implant, a knee implant, a shoulder implant or an elbow implant.

39. The method of claim 31, comprising generating an output that varies according to the proximity of the first position value to the second position value.

41. The method of claim 31, comprising generating a visual signal.

43. The method of claim 31, comprising:

(a) connecting a reference point sensor (the second sensor) to a body to transmit a reference position signal;

(b) connecting a trial sensor (the third sensor) to a trial implant, or associating a trial sensor with a trial implant, to transmit a trial position signal indicating the position of the trial implant relative to the reference point sensor;

(c) connecting an implant sensor (the first sensor) to a first implant, or associating an implant sensor with a first implant, to transmit a first implant position signal indicating the position of the first implant relative to the reference position sensor;

(d) operating a computer having a receiver to (i) receive said reference point signal and trial position signal to create therefrom a predetermined position value, (ii) receive said reference point signal and first implant position signal to create therefrom a comparison position value, said computer having a transmitter to transmit output signals of the predetermined position value; and

(e) generating an output to compare the predetermined position value with the comparison position value.

44. The method of claim 43, comprising providing the output on a screen adapted to receive said visual signals and to create a display to compare the predetermined position value relative to the comparison value, said screen being adapted to be seen by an operator whilst simultaneously viewing a patient.

45. The method of claim 43, comprising providing the output on a head mounted display.

32-36. -36. (canceled)

40. (canceled)

42. (canceled)

46. (canceled)