Devices, systems, and methods for administering therapy
Devices, systems, and methods for administering therapy to restore limb motion to patients in need are disclosed. The system may include a motion capture device to capture an exercise performed by a therapist. The exercise may be retrieved by the patient and used to generate a visual display used to guide the patient through the exercise in real time.
1. A physical therapy administration system for a remote administration of at least one physical therapy session to a patient, the system comprising:
a computing device comprising at least one processor;
at least one dataset;
a CRM configured with a physical therapy administration application comprising a plurality of modules executable by the at least one processor, the plurality of modules comprising:
a exercise administration module to record at least one exercise comprising a target limb trajectory using a motion capture device;
an exercise module configured to:
retrieve an exercise of the at least one exercises;
generate a visual display representing the exercise;
record a patient response comprising a patient limb trajectory performed to follow the visual display using the motion capture device;
calculate a difference between the patient response and the exercise; and
signal the patient if the difference exceeds a threshold difference; and
a session review module configured to produce:
a graph determining a target trajectory of a limb landmark and the corresponding patient trajectory of the same limb landmark,
a graph of the differential displacement of the patient trajectory and target trajectory of the same limb landmark,
a graph of a target trajectory and a patient trajectory of a common limb angle, and
a graph of the difference in limb angles of the patient relative to the limb angles during the target limb trajectory;
the motion capture device.
2. The system of claim 1 , wherein the physical therapy administration application further comprises a GUI module to generate one or more forms used to receive inputs to the system and to deliver output from the system.
3. The system of claim 1 , wherein the motion capture device is configured to record the exercise, and the system further comprises a second motion capture device used by the patient to record the patient response.
4. The system of claim 1 , wherein:
each exercise of the at least one exercises comprises a plurality of frames;
each frame corresponds to a single time during the duration of a limb movement;
each frame comprises a plurality of spatial locations recorded by the motion capture device; and
each spatial location corresponds to each limb landmark of a plurality of limb landmarks.
5. The system of claim 1 , wherein:
the patient response comprises a plurality of patient frames;
each patient frame corresponds to one frame of the exercise;
each patient frame comprises a plurality of patient spatial locations recorded by the motion capture device; and
each patient spatial location corresponds to each spatial location of a limb landmark of the exercise.
6. The system of claim 1 , wherein:
the difference between the patient response and the exercise comprises a plurality of difference frames;
each difference frame corresponds to a frame of the exercise;
each difference frame comprises a plurality of position errors; and
each position error comprises a difference between the spatial location and the corresponding final patient spatial location for each limb landmark in the frame of the exercise.
7. The system of claim 1 , wherein the exercise module signals the patient if any one of the position errors exceeds the error threshold.
8. The system of claim 1 , wherein the at least one scoring rule comprises at least one of:
a position error rule comprising summing all position errors for all difference frames of the patient response;
a completion rule comprising calculating a completion percentage according to:
Completion
Percentage
=
Achieved
Frames
Total
Frames
*
100
%
,
wherein Achieved frames comprises all exercise frames advanced prior to the frame duration and Total frames comprises the total number of exercise frames in the exercise; and
an accuracy rule comprising calculating an accuracy according to:
Accuracy
=
Total
Frames
Total
Frames
+
Stuck
Frames
*
100
%
,
wherein Stuck frames comprises the number of exercise frames advanced after a display time exceeding the frame duration.
9. A method of administering a physical therapy of a subject, the method comprising:
recording at least one exercise comprising a target limb trajectory using a motion capture device;
generating a visual display representing the exercise;
recording a patient response comprising a patient limb trajectory performed to follow the visual display using the motion capture device;
calculating a difference between the patient response and the exercise;
signaling the patient if the difference exceeds a threshold difference;
calculating at least one performance score for the patient response according to at least one scoring rule; and
producing:
a graph determining a target trajectory of a limb landmark and the corresponding patient trajectory of the same limb landmark,
a graph of the differential displacement of the patient trajectory and target trajectory of the same limb landmark,
a graph of a target trajectory and a patient trajectory of a common limb angle, and
a graph of the difference in limb angles of the patient relative to the limb angles during the target limb trajectory.
10. The method of claim 9 , wherein:
each exercise of the at least one exercises comprises a plurality of frames;
each frame corresponds to a single time during the duration of a limb movement;
each frame comprises a plurality of spatial locations recorded by the motion capture device; and
each spatial location corresponds to each limb landmark of a plurality of limb landmarks.
11. The method of claim 9 , wherein the plurality of limb landmarks are chosen from any one or more of: a shoulder, an elbow, a wrist, an ankle, a knee, a hip, a hand, a foot, a finger, or a toe.
12. The method of claim 9 , wherein the visual display generated by the patient exercise module comprises:
a plurality of target images, each target image comprising the plurality of spatial locations from one frame of the plurality of frames, wherein each target image is displayed for up to a frame duration in a time sequence comprising all target images corresponding to all frames of the plurality of frames; and
a patient image comprising a plurality of patient spatial locations measured by the motion capture device in real time and superimposed over each target image in the time sequence.
13. The method of claim 9 , wherein the target image is chosen from one of: a plurality of discrete points, each point corresponding to a spatial location of a limb landmark; a stick figure comprising the plurality of discrete points connected by one or more lines, each line representing a torso or appendage; or an avatar with limbs positioned according to the plurality of spatial locations.
14. The method of claim 9 , wherein:
the difference between the patient response and the exercise comprises a plurality of difference frames;
each difference frame corresponds to a frame of the exercise;
each difference frame comprises a plurality of position errors; and
each position error comprises a difference between the spatial location and the corresponding final patient spatial location for each limb landmark in the frame of the exercise.
15. The method of claim 9 , wherein the at least one scoring rule comprises at least one of:
a position error rule comprising summing all position errors for all difference frames of the patient response;
a completion rule comprising calculating a completion percentage according to:
Completion
Percentage
=
Achieved
Frames
Total
Frames
*
100
%
,
wherein Achieved frames comprises all exercise frames advanced prior to the frame duration and Total frames comprises the total number of exercise frames in the exercise; and
an accuracy rule comprising calculating an accuracy according to:
Accuracy
=
Total
Frames
Total
Frames
+
Stuck
Frames
*
100
%
,
wherein Stuck frames comprises the number of exercise frames advanced after a display time exceeding the frame duration.
16. The physical therapy administration system of claim 1 , wherein the CRM comprises a performance module to calculate at least one performance score for the patient response according to at least one scoring rule; and a monitoring module to review the patient response and the at least one performance score.