Prosthetic component for monitoring joint health

• US 8,720,270 B2
• Filed: 02/27/2012
• Issued: 05/13/2014
• Est. Priority Date: 06/29/2010
• Status: Active Grant

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Ortho Sensor Incorporated
• Inventors: Stein, Marc, Chase, Andrew U., Henson, Philip, Burkhard, Natalie Tran, Keggi, John Graham, Bonnheim, Noah Byron
• Primary Examiner(s): THOMPSON, JEWEL VERGIE
• Application Number:
  US13/406,519
• Publication Number:
  US 20120226360A1
• Time in Patent Office: 806 Days
• Field of Search: 733/970.1, 600/424, 606/102
• US Class Current: 73/379.01
• CPC Class Codes: A61B 5/0082 adapted for particular medical purposes
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/1032 Determining colour for diagnostic purposes measuring colour in general G01J3/46
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: A61B 5/4509 Bone density determination
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/4851 Prosthesis assessment or monitoring
• CPC Class Codes: A61B 5/6846 specially adapted to be brought in contact with an internal body part, i.e. invasive
• CPC Class Codes: A61B 8/0875 for diagnosis of bone A61B5/4504 takes precedence
• CPC Class Codes: A61B 8/58 Testing, adjusting or calibrating the diagnostic device

Abstract

A prosthetic component suitable for long-term implantation is provided. The prosthetic component includes electronic circuitry and sensors to measure a parameter of the muscular-skeletal system. The prosthetic component comprises a first structure having at least one support surface, a second structure having at least one feature configured to couple to bone, and at least one sensor. The electronic circuitry and sensors are hermetically sealed within the prosthetic component. The prosthetic component includes at least on transmissive region. The transmissive region can be located in a region that has exposure to a region outside the joint. The transmissive region can comprise glass. One or more sensors can be used to monitor synovial fluid in proximity to the joint to determine joint health. The transmissive region can be used to support communication between the electronic circuitry and remote system.

Claims

1. A prosthetic component for measuring a parameter of the muscular-skeletal system comprising:

a prosthetic component having at least one feature configured to couple to bone and a transmissive region;

electronic circuitry; and

at least one sensor configured to measure the parameter of the muscular-skeletal system where the electronic circuitry is coupled to the at least one sensor and where the prosthetic component houses the electronic circuitry and the at least one sensor.

2. The prosthetic component of claim 1 where the prosthetic component comprises a metal or metal alloy.

3. The prosthetic component of claim 2 where the transmissive region comprises glass.

4. The prosthetic component of claim 3 where the prosthetic component is configured to transmit data wirelessly through the transmissive region.

5. The prosthetic component of claim 1 where the transmissive region of the prosthetic component is configured to be in proximity to synovial fluid.

6. The prosthetic component of claim 5 further including an optical sensor configured to monitor the synovial fluid.

7. The prosthetic component of claim 5 further including a pH sensor configured to measure pH of the synovial fluid.

8. The prosthetic component of claim 5 further including a temperature sensor configured to measure a temperature of the synovial fluid.

9. The prosthetic component of claim 1 where the electronic circuitry is housed in the prosthetic component and where the transmissive region comprises at least a portion of a wall of the housing.

10. The prosthetic component of claim 1 where the prosthetic component comprises PEEK.

11. A prosthetic component comprising:

a prosthetic component having at least one sensor where the at least one sensor is configured to monitor synovial fluid in proximity to the prosthetic component; and

electronic circuitry coupled to the at least one sensor where the at least one sensor and the electronic circuitry are housed in the prosthetic component.

12. The prosthetic component of claim 11 where the prosthetic component includes a transmissive region.

13. The prosthetic component of claim 12 were the at least one sensor comprises one of an optical sensor, a pH sensor, an ultrasonic sensor, or a temperature sensor and where the transmissive region comprises glass.

14. The prosthetic component of claim 13 further including at least one sensor to measure a force, pressure or load applied to a support surface of the prosthetic component.

15. The prosthetic component of claim 14 where the prosthetic component comprises PEEK.

16. A tibial prosthetic component comprising:

at least one sensor where the at least one sensor is configured to monitor synovial fluid in proximity to the tibial prosthetic component; and

electronic circuitry coupled to the at least one sensor where the at least one sensor and the electronic circuitry are housed in the tibial prosthetic component.

17. The tibial prosthetic component of claim 16 further including at least one sensor to measure a force, pressure or load applied to a support surface of the tibial prosthetic component.

18. The tibial prosthetic component of claim 16 where the tibial prosthetic component comprises PEEK.

19. The tibial prosthetic component of claim 16 where the tibial prosthetic component includes a transmissive region.

20. The tibial prosthetic component of claim 16 where the at least one sensor comprises one of an optical sensor, a pH sensor, a temperature sensor, an ultrasonic sensor.