WO2022225453A1 - Système de test de moteur de mouvement de chaise - Google Patents

Système de test de moteur de mouvement de chaise Download PDF

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Publication number
WO2022225453A1
WO2022225453A1 PCT/SG2022/050229 SG2022050229W WO2022225453A1 WO 2022225453 A1 WO2022225453 A1 WO 2022225453A1 SG 2022050229 W SG2022050229 W SG 2022050229W WO 2022225453 A1 WO2022225453 A1 WO 2022225453A1
Authority
WO
WIPO (PCT)
Prior art keywords
test system
motion motor
motor test
backrest
chair
Prior art date
Application number
PCT/SG2022/050229
Other languages
English (en)
Inventor
Wee Kiat TAN
Wei Tech ANG
Lek Syn LIM
Shupei Phyllis LIANG
Wai Hang KWONG
Ananda Ekaputera SIDARTA
Original Assignee
Nanyang Technological University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanyang Technological University filed Critical Nanyang Technological University
Publication of WO2022225453A1 publication Critical patent/WO2022225453A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6891—Furniture
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1116—Determining posture transitions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1118—Determining activity level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0252—Load cells

Definitions

  • the present disclosure relates to motion motor test systems for collecting kinetic data of a subject while the subject is carrying out a motion motor dexterity test.
  • ADL BACKGROUND Assessment of human movement performance in activities of daily living
  • Many clinical tests assess human movement in ADL tasks, and the instrument used can vary from a complex setup to a simple test kit.
  • One of the most robust and accurate methods is the use of motion capture technology for objective assessment of human movement in term of the level of impairment and function in people with movement impairment, such as stroke survivors, to track the level of recovery and determine the efficacy of treatments.
  • This technology can capture subject posture in time-varying dimensional movement data by using infrared reflective markers, and specialized cameras. These specialized cameras can emit infrared light and capture the infrared light reflected by the markers.
  • ARAT Action Research Arm Test
  • WMFT Wolf Motor Function
  • a motion motor test system comprises: a chair seat portion; a chair backrest provided with a pressure sensor; a touch sensor; and a data acquisition device electrically coupled to the pressure sensor and the touch sensor and configured to generate synchronized sensor data.
  • the motion motor test system allows collection of kinetic data including force data from the pressure sensor and timing data from the touch sensor.
  • the touch sensor may be curved. The curvature of the touch sensor may be provided to allow the touch sensor to fit over the upper portion of a subject’s leg while the subject is seated. Thus, the touch sensor allows for the timing of a subject's hand leaving their lap to be determined.
  • the starting position of many motion motor tests is the subject
  • the touch sensor allows the timing of the start of the test to be determined.
  • the touch sensor may comprise two curved portions attached by a hinge; and a switch located between the two curved portions.
  • Two touch sensors may be provided, for example, one touch sensor to sense the timing of movement of each of the subject’s hands may be provided.
  • the pressure sensor may be a load cell.
  • the motion motor test system may comprise a backrest frame portion which supports the chair backrest above the chair seat portion.
  • the backrest frame may comprise a horizontal portion supported by portions
  • the chair backrest may be coupled to the frame by a bracket which laterally from the backrest frame.
  • the motion motor test system may be used with motion detection systems, such systems often require markers to be attached to the subject. For operation of the motion detection system, the markers must not be
  • the angle of the backrest frame may be adjustable. This may also help with avoiding occlusion and may allow the backrest to be rotated or removed to provide space for hand to back exercises.
  • the height of the backrest may be adjustable and / or the height of the chair seat portion may be adjustable. This allows the motion motor test system to be adapted to fit the subject.
  • FIG.1A shows a front perspective view of a chair motion motor test system according to an embodiment of the present invention
  • FIG.1 B shows a rear perspective view of a chair motion motor test system according to an embodiment of the present invention
  • FIG.2 shows the backrest height and angle adjustment controls in a chair motion motor test system according to an embodiment of the present invention
  • FIG.3 shows a backrest of a chair motion motor test system according to an embodiment of the present invention
  • FIG.4A shows a front perspective view of a chair motion motor test system according to an embodiment of the present invention
  • FIG.4B shows a rear perspective view of a chair motion motor test system according to an embodiment of the present invention
  • FIG.5 shows an end view of the chair motion motor test system shown in FIG.4A and FIG.4B;
  • FIG.6 shows a perspective view of the backrest of a chair motion motor test system according to an embodiment of the present invention
  • FIG.7 shows a backrest of a chair motion motor test system according to an embodiment of the present invention
  • FIG.8A shows an internal view of a touch detection pad of a chair motion motor test system according to an embodiment of the present invention
  • FIG.8B shows a view of a touch detection pad of a chair motion motor test system according to an embodiment of the present invention
  • FIG.9 is a block diagram showing data processing in a chair motion motor test system according to an embodiment of the present invention.
  • the present disclosure provides a chair system for carrying out motion motor tests quantifying a patient’s motor mobility.
  • the table system may be used as part of the Wolf Motor Motion Test.
  • Wolf Motor Motion Test is a 15-tasks test to quantify upper extremity movement ability through timed single or multiple joint motions and functional tasks.
  • FIG.1A and FIG.1 B show a chair motion motor test system according to an embodiment of the present invention.
  • FIG.1A is a perspective view from the front of the chair motion motor test system
  • FIG.1 B is a perspective view from the rear of the chair motion motor test system.
  • the chair motion motor test system 100 comprises a seat surface which is formed by a main cushion 110 and two side cushions 112.
  • the seat surface is supported by four legs 102 and a height adjustment mechanism 104 is provided which allows the height of the seat surface to be adjusted to match the size of the subject.
  • a backrest frame 122 extends from the back of the seat surface and a backrest 120 which is provided with a load cell to measure force exerted by a subject is mounted in a position on the backrest frame 122 corresponding to the main cushion 110.
  • the rear of the chair motion motor test system 100 is provided with a power supply module 132, a load cell amplifier 134 and a sensor hub 136.
  • the power supply module 132 supplies power to the sensors of the chair motion motor test system 100 and may include a transformer to convert mains power to a suitable voltage for the sensors.
  • the load cell amplifier 134 amplifies the output from the load cell mounted in the backrest 120.
  • the sensor hub 136 is coupled to the sensors of the chair motion motor test system 100.
  • FIG.2 shows the backrest height and angle adjustment controls in a chair motion motor test system according to an embodiment of the present invention.
  • a backrest height adjustment knob 124 and a backrest angle adjustment knob 126 are provided at the point where the backrest frame 122 meets the seat surface at the side of the side cushions 112.
  • the backrest height adjustment knob 124 can be loosened to allow the backrest frame 122 to slide relative to the seat surface and thereby adjust the height of the backrest.
  • the backrest height adjustment knob 124 is tightened to fix the height position of the backrest.
  • the backrest angle adjustment knob 126 can be loosened to allow the angle of the backrest frame 122 relative to the seat surface to be adjusted. Once the backrest is at the correct angle, the backrest angle adjustment knob 126 is tightened to fix the angle of the backrest.
  • FIG.3 shows a backrest of a chair motion motor test system according to an embodiment of the present invention.
  • a cushion portion is provided at the front of the backrest 120.
  • the backrest 120 is attached to the backrest frame by a bracket 128.
  • a load cell 129 is provided between the backrest and the bracket 128.
  • the load cell 129 acts to measure the force applied by a subject to the backrest 120 when performing tasks while seated in the chair motion motor test system 100.
  • the load cell is connected to an amplifier which outputs the analogue voltage reading to a Data Acquisition Unit (DAQ) via CAT 6E cables.
  • DAQ Data Acquisition Unit
  • the backrest frame 122 is wider than the central cushion 110. This means that when a subject sits on the chair motion motor test system 100, the vertical parts of the backrest frame will not cover the subject’s back or sides. This prevents occlusion of markers for a motion capture system which may be placed on the pelvis of the subject when performing a task.
  • the chair backrest is also be able to adjusted to different angles and heights to prevent occlusion to the pelvis markers. It is also able to rotate or be removed remove such that there is space for doing hand to back tasks.
  • FIG.4A and FIG.4B show a chair motion motor test system according to an embodiment of the present invention.
  • FIG.4A is a perspective view from the front of the chair motion motor test system and FIG.4B is a perspective view from the rear of the chair motion motor test system.
  • the configuration of the backrest and the adjustment of the height of the seat surface of the chair motion motor test system 400 shown in FIG.4A and FIG.4B differs from that of the chair motion motor test system 100 shown in FIG.1A and FIG.1 B.
  • the chair motion motor test system 400 comprises a seat surface which is formed by a main cushion 410.
  • the seat surface is supported by four legs 402 and a scissor lift 430.
  • Each of the four legs 402 is provided with a retractable wheel 404 which may be extended to contact the floor to allow the chair motion motor test system 400 to be moved, or retracted so that legs 402 are in contact with the floor surface.
  • the scissor lift 430 allows the height of the seat surface to be adjusted to match the sitting height of the subject.
  • a backrest frame 422 extends from the back of the seat surface and a backrest 420 which is provided with a load cell to measure force exerted by a subject is mounted in a position on the backrest frame 422 corresponding to the main cushion 410. As shown in FIG.4A, the backrest frame 422 has a width that corresponds to the width of the main cushion 410.
  • the rear of the chair motion motor test system 400 is provided with housing that contains a power supply module, a load cell amplifier, and a signal interface.
  • a scissor lift handle 442 extends from the rear of the scissor lift 440 and allows the height of the seat surface to be adjusted.
  • FIG.5 shows an end view of the chair motion motor test system shown in FIG.4A and FIG.4B.
  • the retractable wheels 404 are in a retracted position and the ends of the legs 402 are in contact with the floor.
  • the scissor lift 440 comprises two pairs of diagonally arranged bars, and the height of the seat surface can be adjusted by adjusting the horizontal width of the scissor lift 440.
  • the backrest frame 422 is mounted on bars 423 which extend from beneath the main cushion 410.
  • FIG.6 shows a perspective view of the backrest of the chair motion motor test system shown in FIG.4A and FIG.4B. As shown in FIG.6, the backrest frame 422 is pivotally attached to the bars 423 which extend from beneath the main cushion 410.
  • a backrest angle adjustment lever 424 allows the angle of the backrest frame 422 relative to the bars to be locked or unlock and thus provides for adjustment of the angle of the backrest frame 422.
  • the vertical bars of the backrest frame 422 are provided with a holes 425.
  • the vertical top section of the backrest frame 422 has an index plunger 426 which engages with the holes 425.
  • the height of the backrest 420 can be adjusted by selecting a hole at a desired height using the index plunger 426.
  • a lock leaver allows the height of the backrest 420 to be locked at the desired height.
  • FIG.7 shows the backrest of the chair motion motor test system shown in FIG.4A and FIG.4B.
  • a cushion portion is provided at the front of the backrest 420.
  • the backrest 420 is attached to the backrest frame 422 by a bracket 428.
  • a load cell 429 is provided between the backrest and the bracket 428.
  • the load cell 429 acts to measure the force applied by a subject to the backrest 420 when performing tasks while seated in the chair motion motor test system 400.
  • the load cell is connected to an amplifier which outputs the analogue voltage reading to a Data Acquisition Unit (DAQ) via CAT 6E cables.
  • DAQ Data Acquisition Unit
  • the bracket 428 and the load cell 429 extend horizontally from the backrest frame 422. Additionally, the vertical parts of the backrest frame 422 are located at the sides of the main cushion 410. This means that the backrest frame 422 does not occlude markers for a motion capture system which may be placed on the pelvis of the subject when performing a task.
  • the chair backrest is also be able to adjusted to different angles and heights to prevent occlusion to the pelvis markers. It is also able to rotate or be removed remove such that there is space for doing hand to back tasks.
  • the height and depth of the table are set to a minimum of the 5th percentile of Asian women and a maximum of slightly above the 95th percentile of the Asian male population.
  • the length of the chair motion motor test system is least 83 cm. This is to ensure that the chair legs do not touch the force plates that are used in the motion capture lab. Such force plates cover a 50 x 60 cm surface.
  • the chair depth is at least 39 cm.
  • the chair height which is measured from the floor to the cushion top, is adjustable over at least the range from 52cm to 72 cm.
  • the chair motion motor test system 100 shown in FIG.1A and FIG.1 B; and the chair motion motor test system 400 shown in FIG.4A and FIG.4B may be provided with two touch detection pads which are used for time-based tasks.
  • ARAT and WMFT have many time-based tasks, and sometimes the therapist unable to observe and stop the counter in time.
  • the chair motion motor test system may comprise two touch detection pads to use for time-based tasks. By accurately determining when the subject hands leave and return the lap, it allows for more accurate gauging of their time required to do the gross movement.
  • FIG.8A shows an internal view of a touch detection pad of a chair motion motor test system according to an embodiment of the present invention.
  • FIG.8B shows a view of a touch detection pad of a chair motion motor test system according to an embodiment of the present invention.
  • the touch detection pad 800 comprises a curved lower portion 810.
  • a hinge 820 is provided at one of the sides on the curved lower portion 810.
  • a push switch 830 is located on the top surface in the center of the curved lower portion 810.
  • a curved upper portion 840 has a curvature that matches the curvature of the curved lower portion 810.
  • the curved upper portion 840 is attached to the curved lower portion 810 by the hinge 820.
  • the touch detection pad 800 has a two layer structure with the push switch 830 located at the center. The switch is used to close a circuit loop if the subject’s hand is resting on it. The switch will output a positive voltage when depressed, and zero voltage when not depressed.
  • the curvature of the touch detection pad 800 is selected to conform to the upper leg of the subject so that in use, two touch detection pads are placed on the subject’s lap, one over each upper leg.
  • the subject may place one hand over each of the touch detection pads and thus the outputs from the respective switch circuits are used to determine the timing when each of the subject’s hands leaves their lap.
  • FIG.9 is a block diagram showing data processing in a chair motion motor test system according to an embodiment of the present invention.
  • the chair motion test system comprises touch sensors 910 and load cells 920.
  • the touch sensors 910 comprise a right lap touch sensor 912 and a left lap touch sensor 914 which each may be a touch detection pad 800 as described above with reference to FIG.8A and FIG.8B.
  • the load cells 920 comprise a chair backrest load cell 922 which may correspond to the load cell 129 shown in FIG.3 or the load cell 429 shown in FIG.7.
  • the load cells 920 are coupled to a load cell amplifier 930.
  • the touch sensors 910 and the load cell amplifier 930 are coupled to a chair sensor hub 932.
  • the chair sensor hub 932 is connected to a workstation sensor hub 934 by a local area network (LAN) connection.
  • the workstation sensor hub 934 is connected to a data acquisition unit (DAQ) 936 by Bayonet Neill-Concelman (BNC) connections.
  • DAQ data acquisition unit
  • BNC Bayonet Neill-Concelman
  • the output from the data acquisition unit 936 is connected to a desktop computer 940.
  • the desktop computer 940 analyses the synchronized sensor data. This analysis may be based on motion capture data from a motion capture system 950.
  • the motion capture system captures kinematic data of a subject while they complete motion motor task.
  • This kinematic data is synchronized with kinetic data (such as pressure data from the load cells and timing data from the touch sensors) to generate integrated kinematic and kinetic data 960.
  • kinetic data such as pressure data from the load cells and timing data from the touch sensors
  • the equipment can then be used in a community setting to collected data from patients without the need for a motion capture system.
  • the collected data can be analyzed to inform therapists on how the patient movement compared to a normal person movement and what the recovery status.

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Abstract

La présente invention concerne un système de test de moteur de mouvement. Le système de test de moteur de mouvement comprend : une partie siège de chaise ; un dossier de chaise pourvu d'un capteur de pression ; un capteur tactile ; et un dispositif d'acquisition de données couplé électriquement au capteur de pression ainsi qu'au capteur tactile et configuré pour générer des données de capteur synchronisées. Le système de test de moteur de mouvement permet la collecte de données cinétiques comprenant des données de force provenant du capteur de pression et des données de synchronisation provenant du capteur tactile.
PCT/SG2022/050229 2021-04-20 2022-04-19 Système de test de moteur de mouvement de chaise WO2022225453A1 (fr)

Applications Claiming Priority (2)

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SG10202104025S 2021-04-20
SG10202104025S 2021-04-20

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180028777A1 (en) * 2015-02-07 2018-02-01 Pauseable Aps Method and system for relaxation and cultivation of attention
US20190239813A1 (en) * 2018-02-02 2019-08-08 Fuji Xerox Co., Ltd. Processing system
WO2020166248A1 (fr) * 2019-02-14 2020-08-20 テイ・エス テック株式会社 Système de siège et programme

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180028777A1 (en) * 2015-02-07 2018-02-01 Pauseable Aps Method and system for relaxation and cultivation of attention
US20190239813A1 (en) * 2018-02-02 2019-08-08 Fuji Xerox Co., Ltd. Processing system
WO2020166248A1 (fr) * 2019-02-14 2020-08-20 テイ・エス テック株式会社 Système de siège et programme

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LIANG PHYLLIS, LIANG PHYLLIS, KWONG WAI, SIDARTA ANANDA, YAP CHOON, TAN WEE, LIM LEK, CHAN PUI, KUAH CHRISTOPHER WEE KEONG, WEE SE: "An Asian-centric human movement database capturing activities of daily living", SCIENTIFIC DATA, NATURE PORTFOLIO, vol. 7, no. 1, 1 December 2020 (2020-12-01), pages 290, XP093000100, DOI: 10.1038/s41597-020-00627-7 *
YOZBATIRAN NURAY, YOZBATIRAN NURAY, DER YEGHIAIAN LUCY, CRAMER STEVEN: "A Standardized Approach to Performing the Action Research Arm Test", NEUROREHABILITATION AND NEURAL REPAIR, SAGE, US, vol. 22, no. 1, 1 January 2008 (2008-01-01), US , pages 78 - 90, XP093000105, ISSN: 1545-9683, DOI: 10.1177/1545968307305353 *

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