Method for detecting body parameters

• US 9,451,919 B2
• Filed: 05/13/2014
• Issued: 09/27/2016
• Est. Priority Date: 03/29/2005
• Status: Active Grant

• Current Assignee: OrthoSensor, Inc (Stryker Corporation)
• Original Assignee: OrthoSensor, Inc (Stryker Corporation)
• Inventors: Roche, Martin W.
• Primary Examiner(s): BOLES, SAMEH RAAFAT
• Application Number:
  US14/275,965
• Publication Number:
  US 20140330105A1
• Time in Patent Office: 868 Days
• Field of Search: 606/86, 606/96, 606/93, 606/94, 606/102
• US Class Current: 1/1
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/0086 using infrared radiation
• CPC Class Codes: A61B 5/076 Permanent implantations telemetry using implanted circuitry A61B5/0031; implanted stimulators for therapy A61N1/3605, A61N1/362, A61N1/372
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/447 specially adapted for aiding the prevention of ulcer or pressure sore development, i.e. before the ulcer or sore has developed
• CPC Class Codes: A61B 5/4504 Bones A61B5/4547 takes precedence
• CPC Class Codes: A61B 5/4509 Bone density determination
• CPC Class Codes: A61B 5/4523 Tendons
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/4533 Ligaments
• 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 5/6878 Bone
• CPC Class Codes: A61B 8/0875 for diagnosis of bone A61B5/4504 takes precedence

Abstract

A biometric sensor includes a prosthesis for at least one joint having one or more biometric transceivers. The one or more biometric transceivers are capable of transmitting at least one energy wave into a procedure area, quantitatively assessing a behavior of the at least one energy wave, and assessing particulate matter using the at least one energy wave.

Claims

1. An intra-operative system having multiple sensing capabilities, comprising:

a plurality of internal sensors configured to be coupled to at least one of bone, tendon, ligament, and an implant;

a first sensor clamp configured to couple around a first ligament or tendon wherein a first sensor of the plurality of internal sensors is configured to couple to the first sensor clamp, wherein the first sensor is configured to measure a parameter of the first ligament or tendon, and wherein the first sensor is coupled to the first ligament or tendon when the first sensor clamp is released;

electronic circuitry configured to control a measurement process and transmit measurement data wherein the electronic circuitry is coupled to the plurality of internal sensors;

an external device comprising;

a receiver where the receiver is configured to receive the measurement data from the plurality of internal sensors;

a processor, where the processor is configured to input the measured data and calculate at least one of an alignment value of the orthopedic system and a balance value of the orthopedic system; and

a display, where the display is configured to display at least one of the alignment value or the balance value.

2. The intra-operative system of claim 1, wherein each of the plurality of internal sensors include a transmitter that sends data to the external device.

3. The intra-operative system of claim 1, wherein the balance value comprises one or more of an angle of the tendon or ligament relative to a reference axis, an offset of the tendon or ligament tissue relative to a second reference axis, tension in the tendon or ligament, pressure on the tendon or ligament, pressure exerted by the tendon or ligament, and shear in the tendon or ligament.

4. The intra-operative system of claim 1, wherein the measured data comprises information regarding a function of an implant, where the information includes one or more of wear of the implant, subsidence in the vicinity of the implant, bone integration, normal motion of the implant, abnormal motion of the implant, temperature in the vicinity of the implant, change in viscosity in the vicinity of the implant, the existence of particulate matter in the vicinity of the implant, and kinematics of the implant.

5. The intra-operative system of claim 1 wherein a second sensor clamp is configured to couple around a second ligament or tendon, wherein a second sensor of the plurality of internal sensors is coupled to the second sensor clamp, wherein the second sensor is configured to measure a parameter of the second ligament or tendon, and wherein the second sensor is coupled to the second ligament or tendon when the second sensor clamp is released.

6. The intra-operative system of claim 5 wherein the display presents a visual analogue of an intra-operative joint.

7. The intra-operative system of claim 5 wherein a soft-tissue balancing grid is configured to aid a surgeon in regards to soft tissue release.

8. The intra-operative system of claim 5 wherein a soft-tissue balancing grid is configured to aid a surgeon to a joint rotation.

9. The intra-operative system of claim 5 further including:

a first load sensor of the plurality of sensors coupled to the electronic circuitry; and

a second load sensor of the plurality of sensors coupled to the electronic circuitry wherein the first and second load sensors measure loading respectively applied to a medial and a lateral sides of a knee joint.

10. The intra-operative system of claim 9 wherein the medial and the lateral sides of the knee joint are adjusted using soft-tissue tensioning to balance and change a magnitude of applied load.

11. The intra-operative system of claim 1, wherein the display displays at least one value in real-time as adjustments to the implant are made.

12. The intra-operative system of claim 1, wherein the plurality of internal sensors detect loads on an implant and motion of the implant.

13. The intra-operative system of claim 1, wherein the plurality of internal sensors are activated intra-operatively and measured data is stored in the external device.

14. The intra-operative system of claim 1, wherein the implant comprises a spinal implant.

15. The intra-operative system of claim 1, where at least one sensor of the plurality of sensors transmits data to another sensor of the plurality of sensors.

16. The intra-operative system of claim 1, where the plurality of sensors are individually calibrated and offsets for each sensor determined prior to activation.