Lifting monitoring and exercise training system

• US 5,474,083 A
• Filed: 11/15/1993
• Issued: 12/12/1995
• Est. Priority Date: 12/08/1986
• Status: Expired due to Fees

• Current Assignee: EMPI Incorporated (Enovis Corp.)
• Original Assignee: EMPI Incorporated (Enovis Corp.)
• Inventors: Church, John, Hassel, William R., Naghdi, Fred
• Primary Examiner(s): Howell, Kyle L.
• Assistant Examiner(s): Lacyk, John P.
• Application Number:
  US08/152,082
• Time in Patent Office: 757 Days
• Field of Search: 128/733, 128/736, 128/774, 128/775, 128/781, 128/782, 340/573, 33/571, 33/512, 73/865.1
• US Class Current: 600/546
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/486 Bio-feedback A61B5/375 takes precedence

Abstract

The invention is directed to a microprocessor based system utilizing electromyographic sensor to monitor muscle force for lift training and exercise training. In the lift training embodiment the electrodes of the electromyographic sensor are secured to a belt so that they are located adjacent to the lower back of the user when wearing the belt. The lift training embodiment is also provided with a goniometer to measure lifting angle during training, which together with muscle force generated by the lower back is compared in the microprocessor to a programmed lifting parameters and if these parameters are exceeded the user is warned by and audible indicator. The lift trainer embodiment also periodically measures interelectrode impedance to insure actual usage. The exercise training embodiment has a bar graph display displaying muscle intensity and two light emitting diodes alerting a user when to contract or relax a monitored muscle group. The microprocessor is programmed with a exercise routine and alerts a user when the routine is to begin, the duration of muscle contraction and relaxation, and the repetitions required. During exercise the user can monitor muscle intensity from the bar graph display and or auditory feedback element. An alternate lift training systems comprises a belt mounted goniometer which is operatively coupled to a microprocessor having an electronic memory for time logging a lifting session. To insure actual usage the belt is also provided with temperature and/or motion sensors.

Claims

1. A lifting monitoring system for providing information representative of a patient'"'"'s lifting movements, including:

body mounting means adapted to releasably secure at least portions of the system to the patient'"'"'s body;

EMG electrode means adapted to releasably attach to the patient'"'"'s body, for sensing EMG signals representative of the patient'"'"'s muscle activity during lifting movements;

lifting position sensing means mounted to the body mounting means, for providing position signals representative of the patient'"'"'s body position during lifting movements;

memory means mounted to the body mounting means, for storing lifting data representative of predetermined standards of the patient'"'"'s lifting movements as a function of muscle activity and body position;

control means mounted to the body mounting means and coupled to the EMG electrode means, the lifting position sensing means and the memory means, for generating alarm signals as a function of the EMG signals, position signals and lifting data when the patient'"'"'s lifting movements exceed the predetermined standards; and

alarm means mounted to the body mounting means and coupled to the control means, for providing sensory stimulus in response to the alarm signals.

2. The lifting monitoring system of claim 1 and further including means for mounting the EMG electrode means to the body mounting means.

3. The lifting monitoring system of claim 1 wherein the body mounting means includes a belt adapted to releasably secure around the waist of the patient.

4. The lifting monitoring system of claim 3 and further including means for mounting the EMG electrode means to the belt in such a manner that when the belt is worn by the patient, the electrode means are positioned adjacent to the patient'"'"'s back to sense lower back muscle activity.

5. The lifting monitoring system of claim 4 wherein the EMG electrode means includes at least three electrodes.

6. The lifting monitoring system of claim 4 wherein the lifting position sensing means includes a goniometer mounted to the belt for providing position signals representative of the patient'"'"'s back position during lifting movements.

7. The lifting monitoring system of claim 1 wherein:

the EMG electrode means includes means for sensing EMG signals representative of lower back muscle activity of the patient;

the lifting position sensing means includes means for sensing the lifting angle of the patient'"'"'s back; and

the memory means includes means for storing back lifting data representative of predetermined standards of the patient'"'"'s lifting movements as a function of back muscle activity and back position; and

the control means includes means for generating alarm signals as a function of the EMG signals, the lifting angle and lifting data when the patient'"'"'s back lifting movements exceed the predetermined standards.

8. The lifting monitoring system of claim 1 wherein the control means further includes:

processing means for causing compliance data representative of the patient'"'"'s lifting movements to be stored in the memory means; and

interface means for outputting the compliance data from the memory means.

9. The lifting monitoring system of claim 8 and further including a compliance monitor interconnected to the interface means, for providing a display of the compliance data.

10. The lifting monitoring system of claim 1 and further including a programming source means for providing lifting data.

11. The lifting monitoring system of claim 10 wherein the control means further includes:

interface means configured for interconnection to the programming source means, for receiving lifting data; and

processing means coupled to the interface means, for causing the received lifting data to be stored in the memory means.

12. A lifting monitoring system for providing information representative of a patient'"'"'s lifting movements, including:

body mounting means adapted to releasably secure at least portions of the system to the patient'"'"'s body;

EMG electrode means configured to be releasably attached to the patient'"'"'s body, for sensing EMG signals representative of the patient'"'"'s muscle activity during lifting movements;

lifting position sensing means mounted to the body mounting means, for providing position signals representative of the patient'"'"'s body position during lifting movements;

memory means mounted to the body mounting means for storing compliance data representative of the patient'"'"'s lifting movements;

control means mounted to the body mounting means and coupled to the EMG electrode means, the lifting position sensing means and the memory means, for causing the compliance data representative of the patient'"'"'s lifting movements to be stored in the memory means as a function of the EMG signals and the position signals;

an interface means coupled to the control means for outputting the data.

13. The lifting monitoring system of claim 12 and further including a compliance monitor interconnected to the interface means, for providing a display of the compliance data.

14. The lifting monitoring system of claim 12 wherein the body mounting means includes a belt adapted to releasably secure around the waist of the patient.

15. The lifting monitoring system of claim 14 and further including means for mounting the EMG electrode means to the belt in such a manner that when the belt is worn by the patient the electrode means are positioned adjacent to the patient'"'"'s back to sense lower back muscle activity.

16. The lifting monitoring system of claim 12 wherein:

the EMG electrode means includes means for sensing EMG signals representative of lower back muscle activity of the patient;

the lifting position sensing means includes means for sensing the lifting angle of the patient'"'"'s back; and

the control means includes means for causing compliance data representative of the patient'"'"'s back lifting movements to be stored in the memory means.

17. A portable lifting monitoring system configured to be worn by a patient, for monitoring and providing feedback representative of a patient'"'"'s lifting movements, including:

belt means adapted to releasably secure around the patient'"'"'s waist;

EMG electrode means mounted to the belt means, for sensing EMG signals representative of the patient'"'"'s back muscle activity during lifting movements;

goniometer means mounted to the belt means, for providing position signals representative of the patient'"'"'s back position during lifting movements;

memory means mounted to the belt means, for storing back lifting data representative of predetermined standards of the patient'"'"'s lifting movements as a function of back muscle activity and back position;

controller means mounted to the belt means and coupled to the EMG electrode means, the goniometer means and the memory means, for generating alarm signals as a function of the EMG signals, position signals and back lifting data when the patient'"'"'s lifting movements exceed the predetermined standards; and

alarm means mounted to the belt means and coupled to the control means, for providing sensory stimulus in response to the alarm signals.

18. A portable lifting monitoring system configured to be worn by a patient, for monitoring and providing information representative of a patient'"'"'s lifting movements, including:

belt means adapted to releasably secure around the patient'"'"'s waist;

EMG electrode means mounted to the belt means, for sensing EMG signals representative of the patient'"'"'s back muscle activity during lifting movements;

goniometer means mounted to the belt means, for providing position signals representative to the patient'"'"'s back position during lifting movements;

memory means mounted to the belt means for storing back lifting data;

controller means mounted to the belt means and coupled to the EMG electrode means, the goniometer means and the memory means, for causing the back lifting data to be stored in the memory means as a function of the EMG signals and position signals; and

interface means coupled to the controller means and interconnected to a compliance monitor, for outputting the back lifting data.