Instrumented orthopedic restraining device and method of use

• US 5,052,375 A
• Filed: 02/21/1990
• Issued: 10/01/1991
• Est. Priority Date: 02/21/1990
• Status: Expired due to Term

• Current Assignee: IZEX Technologies, Inc.
• Original Assignee: John G. Stark
• Inventors: Nelson, Cecil H., Stark, John G., Lund, Richard G.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Cheng, Joe H.
• Application Number:
  US07/483,139
• Time in Patent Office: 587 Days
• Field of Search: 272/70, 272/76, 272/96, 272/129, 272/DIG. 4, 272/DIG. 5, 272/DIG. 6, 128/25 R, 128/25 B, 128/782, 128/24.1, 364/413.02, 364/413.27, 73/379, 73/11, 340/540, 340/573, 340/665
• US Class Current: 601/34
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/1071 measuring angles, e.g. using goniometers A61B5/1123 takes precedence
• CPC Class Codes: A61B 5/411 Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/6812 Orthopaedic devices
• CPC Class Codes: A61B 5/6828 Leg
• CPC Class Codes: A61B 5/702 Posture restraints
• CPC Class Codes: A61F 5/01 Orthopaedic devices, e.g. splints, casts or braces
• CPC Class Codes: A63B 21/0023 for isometric exercising, i.e. substantial force variation without substantial muscle motion
• CPC Class Codes: A63B 21/0056 using electromagnetically-controlled friction, e.g. magnetic particle brakes
• CPC Class Codes: A63B 21/0057 using electromagnetic clutches
• CPC Class Codes: A63B 21/4025 Resistance devices worn on the user's body A63B21/065 takes precedence
• CPC Class Codes: A63B 2208/12 specially adapted for children
• CPC Class Codes: A63B 2220/16 Angular positions
• CPC Class Codes: A63B 2220/17 Counting, e.g. counting periodical movements, revolutions or cycles, or including further data processing to determine distances or speed
• CPC Class Codes: A63B 2220/54 Torque
• CPC Class Codes: A63B 2225/30 Maintenance
• CPC Class Codes: A63B 23/0494 primarily by articulating the knee joints A63B23/0405, A63B23/0476 take precedence
• CPC Class Codes: A63B 24/00 Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
• CPC Class Codes: Y10S 482/902 Employing specific graphic or video display

Abstract

An instrumented orthopedic restraining device is provided. The device includes an ambulatory housing, including first and second distal end portions, and restraining means for restraining movement of the first and second distal end portions relative to one another. The restraining device preferably includes an elongated restraining bar equipped with a stress sensing mechanism for sensing stress on the restraining bar. A control unit is provided for indicating sensed stress based upon outputs from the stress sensing mechanism. Preferred embodiments include a plurality of strain gauges attached to the elongated restraining bar and interconnected with the control unit which preferably includes a recording mechanism and a microprocessor mechanism. The elongated restraining bar alternately includes an adjustable hinge interconnecting distal end sections of the elongated restraining bar, wherein the angle between the respective distal end sections can be adjusted relative to one another. The adjustable hinge is preferably an electromechanical hinge which can be at least partially controlled by software read by the microprocessor mechanism. Methods of using embodiments of the present invention are also disclosed.

Claims

1. A personal orthopedic restraining device for use to restrain flexibly connected body portions of an individual, said personal orthopedic restraining device comprising:

(a) an ambulatory housing including first and second distal end portions, said respective end portions being configured to receive respective flexibly connected body portions of the individual, said housing further including restraining means for restraining movement of said first and second distal end portions relative to one another, whereby movement of respective body portions relative to one another can be restrained by said housing;

(b) stress sensing means for sensing stress on said restraining means and for providing outputs representative of the sensed stress, said stress sensing means being attached to said restraining means; and

(c) control means including indicating means for indicating sensed stress based upon outputs from said stress sensing means, said control means being interconnected with said stress sensing means for receiving outputs from said stress sensing means, said control means further including programmed processing means for processing outputs from said stress sensing means in a previously programmed routine and memory means for retaining processed data respecting outputs from said stress sensing means, said programmed processing means being interconnected with said stress sensing means for receiving outputs from said stress sensing means and said memory means being interconnected with said programmed processing means for receiving data from said programmed processing means respecting outputs from said stress sensing means, said programmed processing means having the capability of retrieving said retained data for further processing subsequent to receipt and retention by said memory means, wherein said personal orthopedic restraining device is an ambulatory appliance which can be worn by the individual to prevent specific movements of respective body portions restrained thereby relative to one another, and wherein stress on said restraining means can be monitored with said indicating means.

2. The personal orthopedic restraining device of claim 1 wherein said restraining means include an elongated restraining bar having first and second distal end sections, wherein said first and second distal end sections are fixedly secured to said first and second distal end portions of the housing, respectively.

3. The personal orthopedic restraining device of claim 2 wherein said elongated restraining bar includes an adjustable hinge interconnecting said distal end sections, wherein the angular position of the respective distal end sections relative to one another can be adjusted.

4. The personal orthopedic restraining device of claim 3 wherein said adjustable hinge includes position sensing means for sensing the relative angular position of said first and second distal end sections and for providing outputs representative of the sensed position, said control means being interconnected with said positioning sensing means for receiving outputs therefrom.

5. The personal orthopedic restraining device of claim 4 wherein said adjustable hinge is an electromechanical hinge.

6. The personal orthopedic restraining device of claim 5 wherein said control means further include recording means for recording outputs from said stress sensing means and said position sensing means.

7. The personal orthopedic restraining device of claim 2 wherein said stress sensing means include a plurality of strain gauges, said plurality of strain gauges being attached to said elongated restraining bar.

8. The personal orthopedic restraining device of claim 7 wherein said plurality of strain guages include four strain gauges attached to said elongated restraining bar, said strain gauges being interconnected with one another in a wheatstone bridge circuit arrangement.

9. The personal orthopedic restraining device of claim 7 wherein said restraining means includes a second elongated restraining bar, wherein each of the elongated restraining bars have first and second distal end sections disposed on opposite sides of respective flexibly connected body portions, said stress sensing means including a plurality of strain gauges attached to each of said elongated restraining bars, wherein said first and second distal end sections of each of said restraining bars are fixedly secured to said first and second distal end portions of the housing, respectively.

10. The personal orthopedic restraining device of claim 9 wherein each of said elongated restraining bars include an incrementally adjustable hinge interconnecting said respective distal end sections, wherein the angular position of the respective distal end sections of each elongated restraining bar can be adjusted.

11. The personal orthopedic restraining device of claim 10 wherein said incrementally adjustable hinge is an electromechanical hinge, wherein said electromechanical hinge includes position sensing means for sensing the relative angular position of the respective first and second distal end sections of the respective elongated restraining bar and for providing outputs representative of the sensed position, said control means further including recording means for recording outputs from said stress sensing means and said position sensing means.

12. The personal orthopedic restraining device of claim 11 wherein said electromechanical hinge includes an electromechanical clutch mechanism.

13. The personal orthopedic restraining device of claim 1 wherein said stress sensing means include a strain gauge attached to said restraining means.

14. The personal orthopedic restraining device of claim 1 wherein said control means include visual indication means for providing a visual indication of the sensed stress.

15. The personal orthopedic restraining device of claim 1 wherein said control means include audible indication means for providing an audible indication of the sensed stress.

16. The personal orthopedic restraining device of claim 15 wherein the audible indication of the sensed stress is a relative audible indication.

17. The personal orthopedic restraining device of claim 1 wherein said control means include palpable indication means for providing a palpable indication of the sensed stress.

18. The orthopedic restraining device of claim 1 wherein said control means are housed in a control unit and said control unit is mounted on said ambulatory housing.

19. The personal orthopedic restraining device of claim 1 wherein said program means include alerting means for alerting the individual at predetermined intervals.

20. The personal orthopedic restraining device of claim 1 wherein said programmed processing means include display means for displaying orthopedic restraining device operating information on visual indication means interconnected therewith.

21. The personal orthopedic restraining device of claim 1 wherein said programmed processing means include statistical display means for displaying statistical information from outputs representative of said sensed stress.

22. The personal orthopedic restraining device of claim 1 wherein said programmed processing means have a first idle state and a second operational state, wherein said control means require less power in the idle state as compared to the operational state.

23. The personal orthopedic restraining device of claim 22 wherein said operational state includes an exercise mode of operation which responds to outputs from said stress sensing means and processes said outputs.

30. The method of claim 21 wherein said monitoring step includes retrieving said recording means from said individual subsequent to said step of requesting;

and interconnecting said monitoring means with said recording means to access said recorded outputs subsequent to the occurrence of an exercise event for which outputs are recorded.

31. The method of claim 30 wherein said housing having first and second distal end portions, said respective end distal portions being configured to receive respective first and second flexibly connected body portions of the individual, said restraining means including an elongated restraining bar having first and second distal end sections, said first and second distal end sections being fixedly secured to said first and second distal end portions respectively, said elongated restraining bar including an incrementally adjustable hinge interconnecting said first and second distal end sections, wherein the angular position of the respective distal end sections relative to one another can be adjusted, said incrementally adjustable hinge including position sensing means for sensing the relative angular position of said first and second distal end sections and for providing outputs representative of said senses position, said recording means being interconnected with said position sensing means for receiving outputs from said position sensing means, said step of requesting the individual to exert measurable isometric force against said restraining means in a series of repetitive isometric exercise events including requesting the individual to adjust the relative angular position of said first and second distal end sections to different relative angular positions and to exert measurable isometric force against said restraining means in a series of repetitive isometric exercise events following each adjustment.

32. The method of claim 31 wherein the incrementally adjustable hinge is an electromechanical hinge, said restraining device further including control means, said control means including said recording means, said monitoring means and program means for processing outputs from said stress sensing means and said position sensing means, said control means being interconnected with said stress sensing means and said position sensing means for receiving outputs therefrom, said program means being interconnected with said monitoring means for directing outputs thereto, said monitoring means including visual display means for providing exercise commands for the individual in response to a set of program guidelines and in response to outputs from said stress sensing means and from said position sensing means, said step of requesting the individual to exert measurable isometric force against said restraining means in a series of repetitive isometric exercise events including requesting the individual to respond to a series of exercise commands prescribed by said program means in response to outputs from said stress sensing means.

24. A personal orthopedic restraining device for use to restrain flexibly connected body portions of an individual, said personal orthopedic restraining device comprising:

(a) an ambulatory housing including first and second distal end portions, said respective end portions being configured to receive respective flexibly connected body portions of the individual, said housing further including restraining means for restraining movement of said first and second distal end portions relative to one another, said restraining means including at least one elongated restraining bar having first and second distal end sections, wherein said first and second distal end sections of said elongated restraining bar are fixedly secured to said first and second distal end portions of the housing, respectively, whereby movement of respective body portions relative to one another can be restrained by said housing;

(b) an incrementally adjustable hinge interconnecting the respective distal end sections of said elongated restraining bar, wherein the angular position of the respective one of said first and second distal end sections can be adjusted relative to one another;

wherein the incrementally adjustable hinge is an electromechanical hinge including position sensing means for sensing the relative angular position of said first and second distal end sections interconnected therewith and for providing outputs representative of the sensed position, the electromechanical hinge further including a brake mechanism for preventing incremental adjustment of the incrementally adjustable hinge when the brake is activated;

(c) stress sensing means for sensing stress on the personal orthopedic restraining means and for providing outputs representative of the sensed stress, said stress sensing means including a plurality of strain gauges attached to said elongated restraining bar; and

(d) control means including indicating means for indicating sensed stress based upon the outputs from said stress sensing means, recording means for recording the output or outputs from said stress sensing means, and program means and said position sensing means for processing outputs from said stress sensing means, said control means being interconnected with said stress sensing means for receiving outputs therefrom, wherein said restraining device is an ambulatory appliance which can be worn by the individual to restrains specific movements of respective body portions restrained thereby relative to one another, and wherein stress on said restraining means can be monitored with said indicating means.

25. The personal orthopedic restraining device of claim 24 wherein said restraining means includes two elongated restraining bars wherein the respective elongated restraining bars are disposed on opposite sides of said flexibly connected body portions when engaged therewith.

26. A method of rehabilitating or conditioning flexibly connected body portions of an individual by using an orthopedic restraining device, said method comprising the steps of:

(a) engaging flexibly connected body portions of the individual in an orthopedic restraining device, said restraining device including an ambulatory housing having first and second distal end portions, said respective distal end portions being configured to receive respective flexibly connected body portions, said housing further including restraining means for restraining movement of said first and second distal end portions relative to one another, whereby movement of respective body portions relative to one another can be restrained by said housing, said orthopedic restraining device further including stress sensing means for sensing stress on said restraining means and for providing outputs representative of the sensed stress, and control means for indicating sensed stress based upon outputs from said stress sensing means, said stress sensing means being attached to said restraining means, and said control means being interconnected with said stress sensing means for receiving outputs therefrom, wherein said restraining means include at least one elongated restraining bar, said restraining bar having first and second distal end sections, wherein each first and second distal end section is secured to said first and second distal end portion of the housing, respectively, said stress sensing means including a plurality of strain gauges attached to said elongated restraining bar, said elongated restraining bar including an incrementally adjustable hinge pivotally interconnecting said respective first and second distal end sections;

(b) exercising said flexibly connected body portions by applying measurable isometric force against said restraining means;

(c) monitoring stress upon said restraining means by said exercising;

said monitoring step including monitoring sensed stress indicated by said control means by monitoring said control means; and

(d) adjusting said incrementally adjustable hinge so that the respective distal end sections pivot about the incrementally adjustable hinge in relation to one another so that an angular position of the respective distal end sections relative to one another is changed prior to repeating steps (b) and (c).

27. The method of rehabilitating or conditioning flexibly connected body portions according to claim 26 wherein said incrementally adjustable hinge is an electromechanical hinge including brake means for preventing pivotal movement of the respective distal end sections about the incrementally adjustable hinge when said brake means is activated, and wherein said step of adjusting said incrementally adjustable hinge is followed by a subsequent step of activating said brake means prior to a further step of repeating steps (b) and (c).

28. The method of rehabilitating or conditioning flexibly connected body portions according to claim 27 wherein said exercising step includes applying measurable isometric force against said restraining means in a series of repetitive isometric exercise events;

and wherein said exercising step and said monitoring step are repeated following a series of repetitions of said adjusting step.

29. A method of monitoring an individual'"'"'s exercise routine by using an orthopedic restraining device, said method including the steps of:

(a) engaging first and second flexibly connected body portions of an individual in an orthopedic restraining device, said orthopedic restraining device including;

an ambulatory housing including restraining means which can restrain movement of said first and second flexibly connected body portions relative to one another when engaged in said orthopedic restraining device;

stress sensing means for sensing stress on said restraining means and for providing outputs representative of said sensed stress; and

recording means for recording outputs from said stress sensing means;

said stress sensing means being attached to said restraining means; and

said recording means being interconnected with said stress sensing means for receiving outputs therefrom;

(b) requesting the individual to exert measurable isometric force against said restraining means in a series of repetitive isometric exercise events; and

(c) monitoring outputs representative of stress sensed during and in response to said series of isometric exercise events by accessing said recorded outputs with monitoring means for monitoring outputs recorded by said recording means, said monitoring means being interconnected with said recording means for accessing outputs recorded therein.

33. A personal orthopedic restraining device for use to restrain flexibly connected body portions of an individual, said person orthopedic restraining device comprising:

(a) an ambulatory housing including first and second distal end portions, said respective end portions being configured to receive respective flexibly connected body portions of the individual, said housing further including restraining means including an electromechanical hinge having brake means for restraining pivotal movement of said first and second distal end portions relative to one another, wherein the electromechanical hinge pivotally interconnects the respective first and second end portions, whereby movement of respective body portions relative to one another can be restrained by said housing;

(b) stress sensing means for sensing stress on said restraining means and for providing outputs representative of the sensed stress, said stress sensing means including at least one stress sensing device attached to said housing; and

(c) control means including indication means for indication means for indicating sensed stress based upon outputs from said stress sensing means, said control means being interconnected with said stress sensing means for receiving outputs from said stress sensing means, wherein said personal orthopedic restraining device is an ambulatory appliance which can be worn by the individual to prevent specific movements of respective body portions restrained thereby relative to one another, and wherein stress on said restraining means can be monitored with said indication means.

34. The personal orthopedic restraining device of claim 33 wherein said stress sensing means is a pressure sensing device.

35. The personal orthopedic restraining device of claim 34 wherein said pressure sensing device is a load cell oriented such that it generates an output when a force is exerted upon the housing proximate said load cell.