WO2012138203A2 - 능동적 로보틱 보행 훈련 시스템 및 방법 - Google Patents
능동적 로보틱 보행 훈련 시스템 및 방법 Download PDFInfo
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- WO2012138203A2 WO2012138203A2 PCT/KR2012/002678 KR2012002678W WO2012138203A2 WO 2012138203 A2 WO2012138203 A2 WO 2012138203A2 KR 2012002678 W KR2012002678 W KR 2012002678W WO 2012138203 A2 WO2012138203 A2 WO 2012138203A2
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- support
- gait
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- training
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
- A61H1/02—Stretching or bending or torsioning apparatus for exercising
- A61H1/0237—Stretching or bending or torsioning apparatus for exercising for the lower limbs
- A61H1/0255—Both knee and hip of a patient, e.g. in supine or sitting position, the feet being moved together in a plane substantially parallel to the body-symmetrical plane
-
- A—HUMAN NECESSITIES
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- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
- A61H1/02—Stretching or bending or torsioning apparatus for exercising
- A61H1/0237—Stretching or bending or torsioning apparatus for exercising for the lower limbs
- A61H1/0255—Both knee and hip of a patient, e.g. in supine or sitting position, the feet being moved together in a plane substantially parallel to the body-symmetrical plane
- A61H1/0262—Walking movement; Appliances for aiding disabled persons to walk
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- A—HUMAN NECESSITIES
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- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
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- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36003—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of motor muscles, e.g. for walking assistance
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- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
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- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
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- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
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- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
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- A63B21/40—Interfaces with the user related to strength training; Details thereof
- A63B21/4001—Arrangements for attaching the exercising apparatus to the user's body, e.g. belts, shoes or gloves specially adapted therefor
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- A63B21/40—Interfaces with the user related to strength training; Details thereof
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- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
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- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
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- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
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- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
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- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
- A61H2201/164—Feet or leg, e.g. pedal
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- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/50—Control means thereof
- A61H2201/5058—Sensors or detectors
- A61H2201/5069—Angle sensors
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- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
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- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/02—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable endless bands, e.g. treadmills
- A63B22/0235—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable endless bands, e.g. treadmills driven by a motor
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2213/00—Exercising combined with therapy
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- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/10—Positions
- A63B2220/16—Angular positions
Definitions
- the present invention relates to an active robotic gait training system and method, and more particularly, to estimate the gait period by measuring the inclination of the lower leg, and to operate the hip joint and the knee joint by an actuator according to the gait period,
- the present invention relates to an active robotic gait training system and method that enables ankle joints to be operated by electric stimulation (FES), thereby enabling more active gait training based on the residual gait ability of the gait disabled.
- FES electric stimulation
- the walking cycle of a normal person is roughly divided into two periods, a standing and a stinging period.
- the standing position is the time when the foot touches the ground, and consists of the initial folding, the bottom folding, the middle standing, the heel lifter and the toe lifter.
- the stator is the time when the foot moves off the ground, and consists of the toe lifter, the middle stent and the initial folding.
- the standing stage accounts for about 60% and the walking stage accounts for about 40%.
- Gait training is an important part of improving the level of independence and good quality of life for people with disabilities who have lost their ability to walk.
- the degree of walking is different depending on the person with a walking disability, the walking training using a sense of their own than the case of uniform walking training brings a higher walking training effect.
- the walking degree of the walking impaired was determined using therapist's palpation and sensory stimulation.
- a gait training system capable of active gait training using the residual sense of the gait impaired, and providing a joint motion according to a normal gait pattern is desired.
- the present invention estimates the walking cycle by measuring the inclination of the lower leg, and according to the walking cycle, the hip joint and knee joint are operated by the actuator, and the ankle joint is operated by the functional electrical stimulation (FES).
- FES functional electrical stimulation
- the problem to be solved by the present invention is to estimate the walking cycle by measuring the inclination of the lower leg, to operate the hip joint and knee joint by the actuator according to the walking cycle, the ankle joint by functional electrical stimulation (FES) It is to provide an active robotic gait training system and method that allows the operation, thereby enabling more active gait training.
- FES functional electrical stimulation
- Another object of the present invention is to provide an active robotic gait training system and method that enables active gait training of a gait-impaired person, and provides a joint motion that matches a normal gait pattern, without the assistance of a therapist.
- the present invention is located in the thigh, the same length as the thigh, femoral support forming the same direction; Is located in the buttocks, one end is mounted to the upper end of the femoral support, the hip support is mounted so that the femoral support is rotatable; Located in the lower thigh, and mounted on the lower end of the thigh support, the lower thigh support is configured to be rotatable; comprising a robotic walking training system, comprising a forefoot is located at the bottom of the lower thigh support, wraps the forefoot (toe) Toe fixing ring is fixed to the line connected to the strap; An inclination sensor attached to one side of the lower or front foot strap of the lower support; A controller configured to generate a FES control signal for functional electric stimulation (FES) of the low or abdominal muscles of the ankle joint from the slope signal received from the tilt sensor; And a FES unit configured to perform a functional electric stimulation (FES)
- FES functional electric stimulation
- the thigh portion is located in the thigh portion, the same length as the thigh portion, the femoral support portion in the same direction; Is located in the buttocks, one end is mounted to the upper end of the femoral support, the hip support is mounted so that the femoral support is rotatable; Located in the lower thigh, and mounted on the lower end of the thigh support, the lower thigh support is configured to be rotatable; comprising a robotic walking training system, comprising a forefoot is located at the bottom of the lower thigh support, wraps the forefoot (toe) Toe fixing ring is fixed to the line connected to the strap; An inclination sensor attached to one side of the lower or front foot strap of the lower support; A controller configured to generate a hip joint angle control signal from the tilt signal received from the tilt sensor; receiving the hip joint angle control signal from the controller, the hip joint being a joint part of the femoral support unit and the hip joint support unit
- the present invention is located in the thigh, femoral support portion having the same length, the same direction as the thigh; Is located in the buttocks, one end is mounted to the upper end of the femoral support, the hip support is mounted so that the femoral support is rotatable; Located in the lower thigh, and mounted on the lower end of the thigh support, the lower thigh support is configured to be rotatable; comprising a robotic walking training system, comprising a forefoot is located at the bottom of the lower thigh support, wraps the forefoot (toe) Toe fixing ring is fixed to the line connected to the strap; An inclination sensor attached to one side of the lower or front foot strap of the lower support; A control unit configured to generate a knee joint angle control signal from the tilt signal received from the tilt sensor; receiving the knee joint angle control signal from the control unit, and in the knee joint which is a joint part of the lower support and the femoral support, the knee joint angle And
- the control unit estimates a walking period from an inclination signal, generates a hip joint angle control signal according to the estimated walking period from a previously stored hip joint driving pattern, and the control unit estimates the walking period from an inclination signal, and stores the knee joint driving. From the pattern, a knee joint angle control signal according to the estimated gait period is generated.
- the first linear actuator has one end mounted to one end of the hip support, the other end mounted to the top of the femoral support, and the second linear actuator has one end mounted to the femoral support and the other end to the top of the lower support. Is mounted on.
- the hip joint is equipped with a first encoder for measuring the angle of rotation of the femoral support, and the knee joint is equipped with a second encoder for measuring the angle of rotation of the lower support.
- the controller estimates the walking period from the tilt signal, receives the hip joint angle signal from the first encoder, and generates a hip joint angle control signal according to the estimated walking cycle from the pre-stored hip joint driving pattern.
- the gait period is estimated from the second encoder, and the knee joint angle signal is received from the second encoder, and the knee joint angle control signal according to the estimated gait period is generated from the pre-stored knee joint driving pattern.
- a first load cell is mounted between the first linear actuator and the thigh support, and a second load cell is mounted between the second linear actuator and the lower thigh support.
- the thigh support, the hip support and the lower support constitute a robot-assisted walking training device for one leg, a pair of robot-assisted walking training device for left and right legs, and the pair of robot-assisted walking training Further equipped with a treadmill for mounting the device and walking training.
- harnesses A frame for mounting a pulley to which the rope mounted on the harness passes; And a weight mounted at one end of the rope passing through the pulley.
- a thigh strap is attached to the thigh support for engaging the thigh support with the thigh, and a thigh strap for engaging the upper and lower thighs, and an ankle strap for engaging the lower thigh and the ankle.
- the gait pattern collecting step of collecting the gait pattern of the walking disabled and analyze the motion;
- the database for each pedestrian disabled to store the collected walking pattern and analysis results for each pedestrian disabled;
- a system control step of generating and outputting an FES control signal, an actuator control signal for driving the hip joint and the knee joint from the walking patterns stored from the database for each pedestrian with a disability;
- the gait pattern collecting step may include: a gait pattern collecting step of collecting a gait pattern from a gait of a gait disabled, when personal information of a gait training subject is input;
- a gait parameter detection step of detecting a gait event including a joint angle, a gait time, a gait period, and a gait speed from data collected in a gait pattern collection step;
- a training walking pattern generation step of generating a training walking pattern to be used in walking training, from the walking parameters including a walking cycle detected in the walking parameter detection step.
- the database for each walking impaired step includes: an initial walking pattern setting step of reading an initial walking pattern set among previously stored walking patterns; A personal adaptive training pattern generation step of re-adjusting the training walking pattern by using the initial walking pattern read in the initial walking pattern setting step, the training walking pattern generated in the training walking pattern generation step, and the previously stored walking disabled person database. A database update step of updating and storing information on the training walking pattern generated in the personal adaptive training pattern generation step.
- the system control step may include: an FES sensor setting step of setting a stimulation position and a stimulation speed of the FES sensor according to the set training level intensity; A walking training device in which a person with a walking disability is not boarded, a walking training simulation is performed with a set walking training pattern, and a walking training simulation step of determining whether or not abnormality is determined by checking equipment driving conditions.
- the slope of the lower leg is measured to estimate the gait period, and according to the gait period, the hip joint and the knee joint are operated by an actuator, and the functional electric stimulation (FES) is performed.
- FES functional electric stimulation
- the present invention enables active gait training of the walking impaired, without the assistance of the therapist, active robotic gait training that provides a joint motion according to the normal gait pattern is possible.
- FIG. 1 is a conceptual diagram for schematically illustrating an active robotic gait training system of the present invention.
- FIG. 2 is a block diagram illustrating the configuration of a robot-assisted walking training apparatus according to the present invention.
- FIG. 3 is an example of a driven state of the robot-assisted gait training apparatus of FIG. 2.
- FIG. 4 is a view showing the principle of operation of the robot-assisted walking training apparatus of FIG.
- FIG. 5 is an explanatory diagram illustrating a robotic gait training system incorporating a robot-assisted gait training device for left and right legs of the present invention.
- FIG. 6 is an explanatory diagram for explaining a state of use of the active robotic gait training system of the present invention.
- Figure 7 is an example of the FES unit integrated with the strap in the present invention.
- FIG 8 shows an example in which the FES unit is mounted using a strap or the like in the present invention.
- FIG. 9 is a block diagram schematically illustrating a configuration for controlling an active robotic gait training system according to the present invention.
- FIG. 10 is a block diagram schematically illustrating a configuration of the main operation processing unit of FIG. 9.
- 11 is an explanatory diagram for schematically explaining a method of driving an active robotic gait training system according to the present invention.
- FIG. 1 is a conceptual diagram for schematically illustrating an active robotic gait training system of the present invention.
- a trained person with a walking impairment wears the robot-assisted walking training device 10 on each leg, and is trained on the treadmill 60.
- the robot-assisted walking training device 10 includes a hip joint 20, a knee joint 30, an ankle strap 415, an FES unit 50, and a tilt sensor (not shown).
- An inclination sensor (not shown) is mounted on the robot-assisted walking training device 10 to detect the inclination of the thigh (or foot).
- the hip joint part 20 is configured to rotate the hip joint at a predetermined angle by driving an actuator (motor), but the hip joint actuator according to the hip joint driving pattern 25 during a preset walking cycle from a controller (not shown). It is driven by receiving a drive signal.
- the knee joint part 30 is made to rotate the joint of the knee at a predetermined angle by driving an actuator (motor), but the knee joint actuator according to the knee joint driving pattern 35 during a preset gait period from a controller (not shown). It is driven by receiving a drive signal.
- Ankle strap 415 is one of the means for mounting the robot-aided walking training device 10 to the leg fixedly mounted to the lower end of the robot-aided walking training device 10 to the ankle.
- the FES unit 50 is a means for applying a functional electric stimulation (FES) to the ankle joint low / flexor muscle, is driven by receiving an electrical stimulation signal according to a predetermined functional electrical stimulation pattern 55 from the control unit (not shown) .
- the preset functional electrical stimulation pattern 55 may be formed of a pulse train.
- the FES unit 50 may be located at the ankle part or the instep part.
- FES 50 is driven when the toe falls in the ROM curve, and the time when the toe falls is a point of 60% when the entire walking cycle is 100%.
- the controller determines the current walking cycle from the signal received from the tilt sensor (not shown), and drives the hip joint 20, the knee joint 30, and the FES unit 50 according to the determined walking cycle.
- the hip joint 20 is driven according to the hip joint driving pattern 25 during the preset gait cycle
- the knee joint 30 is driven according to the knee joint driving pattern 35 during the preset gait cycle, FES.
- the unit 50 stimulates ankle-associated muscles according to a predetermined functional electrical stimulation pattern 55.
- the robot-assisted gait training device 10 controls the passive gait training according to the normal gait characteristics of the hip and knee joints of a gait-impaired person such as a spinal cord injury or a stroke patient using a linear actuator driven by a servomotor.
- the walking sensor of the paralyzed patient is detected using a tilt sensor, and accordingly, an active walking training can be induced by applying a functional electric stimulation (FES) to the ankle joint low / drainage muscle.
- Hip joint driving pattern 25 represents the driving of the actuator to drive the hip joint in accordance with the normal gait characteristics of the gait disabled
- knee joint driving pattern 35 represents the actuator of driving the knee joint to fit the gait characteristics of the gait disabled Indicates drive.
- the predetermined functional electrical stimulation pattern 55 shows an action of inducing active gait training by applying a functional electrical stimulation (FES) to the ankle joint low / dorsal muscle in accordance with the normal gait characteristics of the gait disabled.
- Figure 2 is a block diagram illustrating the configuration of the robot-assisted walking training apparatus according to the present invention
- Figure 3 is an example of the driven state of the robot-assisted walking training apparatus of FIG.
- the robot-assisted walking training device 10 includes a hip support part 100, a femoral support part 200, a lower leg support part 300, an ankle support part 400, a hip joint part 150, and a knee joint part 250. .
- the hip support part 100 is mounted at a position of the hips on the left and right sides of the human body, that is, the buttocks, and supports the thigh support part 200 mounted on the hip part 150 to be rotated by the first linear actuator 170.
- the hip joint 150 is mounted at one end of the hip support 100.
- the hip joint (hip joint) part 150 is mounted between the hip support part 100 and the femoral support part 200.
- the hip support part 100 is fixedly mounted to the hip joint part 150
- the femoral support part 200 is mounted to the hip joint part 150 to be rotatable. That is, the hip joint 150 is composed of a joint for rotatably coupling the hip joint support part 100 and the femoral support part 200.
- the hip joint 150 may be equipped with a first rotation angle encoder 155 for measuring a joint rotation angle.
- the first rotation angle encoder 155 repeatedly outputs a signal for determining gait characteristics by repeatedly measuring joint rotation angles of the gait impaired, and drives the hip joint 150 according to the gait characteristics of the gait impaired through the signal.
- the control signal can be processed.
- the first linear actuator 170 includes a piston 172, a cylinder 174, a gear unit 176, and a servo motor 178 to perform a linear movement (linear movement), one side of which is a hip joint support part 100. ) Is mounted on one end, and the other side is mounted on the upper end of the thigh support part 200 through the first load cell 180. In some cases, the first load cell 180 may be omitted.
- the piston 172 is a threaded piston, one end of which is fixed to the femoral support 200 through the first load cell 180, and the other end of which is received in the cylinder 174 fixed to the hip joint support 100.
- Cylinder 174 is a cylinder for receiving the piston 172, one end is fixed to the hip joint support portion 100, the other end is femoral through the first load cell 180 connected to the piston 172 accommodated in the cylinder 174 It is fixed to the support 200.
- the gear portion 176 is rotatably coupled to the thread of the piston 172.
- the piston 172, the cylinder 174, the gear portion 176 may be referred to as a ball screw, the ball screw is a means for converting the rotation of the servo motor 178 into a linear motion.
- the servo motor 178 rotates the gear unit 176 to reciprocate the piston 172 into and out of the cylinder 174.
- the first load cell 180 measures the force (load) applied to lifting the femoral support 200 from the hip joint 150. That is, the force applied to the hip joint (hip joint) in the first linear actuator 170 is measured.
- the femoral support 200 is mounted to the left and right thigh position of the human body, one end is rotatably mounted to the hip joint 150, the other end is fixed to the knee joint 250.
- the femoral support part 200 is rotated by the first linear actuator 170, and the operation such as raising or lowering the femoral part is performed.
- the femoral support 200 supports the lower support 300 mounted on the knee joint 250 to be rotated by the second linear actuator 270.
- the thigh support 200 is fixed to the thigh of the human body by a strap.
- the femoral support 200 supports the thigh so that the femoral length may vary depending on the person, so that the femoral extension 200 is located between the upper thigh support 225 and the lower thigh support divided by two. It is further provided.
- the femoral extension 210 has a rod shape, one end of which is fixed to the upper femoral support 225, and includes a plurality of holes 220. The other end of the femoral extension 210 is inserted into the lower femoral support 230, and screwed with the hole on the outside of the lower femoral support 230. The length may be changed through the femoral extension 210.
- the knee joint 250 is mounted between the femoral support 200 and the lower support 300.
- the femoral support part 200 is fixedly mounted to the knee joint part 250
- the lower leg support part 300 is mounted to the knee joint part 250 to be rotatable.
- the knee joint 250 may be equipped with a second rotation angle encoder 250 for measuring a joint rotation angle.
- the second rotation angle encoder 250 repeatedly outputs a signal for determining gait characteristics by repeatedly measuring joint rotation angles of the gait disabled, and drives the knee joint 250 according to the gait characteristics of the gait disabled through this signal.
- the control signal can be processed.
- the second linear actuator 270 is an actuator including a piston 272, a cylinder 274, a gear 276, a servo motor 278 to perform a linear movement (linear movement), one side of the femoral support 200 The other side is mounted on the upper end of the lower support 300 through the second load cell (280). In some cases, the second load cell 280 may be omitted.
- Piston 272 is a threaded piston, one end is fixed to the lower support 300 through the second load cell 280, the other end is received in the cylinder 274 fixed to the thigh support 200.
- Cylinder 274 is a cylinder for receiving the piston 272, one end is fixed to the femoral support 200, the other end is lowered through the second load cell 280 connected to the piston 272 accommodated in the cylinder 274 It is fixed to the support 300.
- the gear portion 276 is rotatably coupled to the thread of the piston 272.
- the piston 272, the cylinder 274, and the gear unit 276 may be referred to as ball screws, and the ball screw is a means for converting the rotation of the servomotor 278 into a linear motion.
- the servo motor 278 rotationally drives the gear unit 276 to reciprocate the piston 272 into and out of the cylinder 274.
- the second load cell 280 measures the force (load) applied to moving the lower support 300 from the hip joint 150. That is, the force applied by the second linear actuator 270 is measured.
- the lower support 300 is mounted to the lower left and right position of the human body, one end is rotatably mounted to the knee joint 250, the other end is connected to the ankle support 400.
- the lower support 300 is rotated by the second linear actuator 270, and the operation such as raising and lowering the legs is performed.
- the lower support 300 may be fixed to the calf and the strap as a portion corresponding to the calf of the human body.
- Ankle support 400 is one end is connected to the lower support 300, the toe fixed ring 440 is mounted.
- Ankle support 400 is provided with an ankle strap, it is possible to fix the ankle support 400 to the ankle.
- Toe fixing ring 440 is fixed to the toe (forefoot) by the line connected to the toe protector (forefoot strap) (not shown) wrapped around the toe (forefoot) portion through the toe fixing ring 440.
- the toe fixing ring 440 may be mounted on the foot of the FES magnetic pole (not shown).
- Ankle extension portion 445 is in the form of a rod, one end is mounted in the ankle support 400, having a plurality of holes 220, made to screw into the hole on the outside of the ankle support 400, ankle support ( 400 may vary in length. In some cases, the ankle extension 445 may be omitted.
- FIG. 4 is a view showing the principle of operation of the robot-assisted walking training apparatus of FIG.
- the hip joint 150 moves in a clockwise direction, and the thigh support 200 moves upward, that is, in the direction of lifting the thigh. To move.
- the femoral support 200 moves in a downward direction, that is, in a direction of lowering the thigh.
- the knee joint 250 moves in a clockwise direction, and the lower leg support 300 moves upward, that is, in a direction of lifting the lower leg (calf).
- the second linear actuator 270 moves toward the ankle part 400, the lower support 300 moves in a downward direction, that is, in a direction of lowering the lower leg.
- FIG. 5 is an explanatory diagram illustrating a robotic gait training system incorporating a robot-assisted gait training device for left and right legs of the present invention.
- one end (an end opposite to the hip joint 150) of the hip support part 100 is mounted and fixed to the integrated fixation end 77, and the integrated fixation end 70 One side of the) is equipped with a back support 90, made to support the back when wearing this robotic walking training system.
- the integrated fixing stage 70 is connected to the frame of the robotic gait training system through the frame connector 95.
- the frame is a frame for mounting harnesses and the like.
- the robot-assisted gait training apparatus 10 of the left and right legs includes a femoral strap 215, a lower leg strap 315, and an ankle strap 415 to couple the leg with the robot-assisted gait training apparatus 10. .
- Buttock guide 17 is located on the left and right sides of the hip is located on the top of the robot-assisted walking training device 10 to be fixed to the buttocks and the robot-assisted walking training device 10 to relieve pain by pressing the skin It acts as a cushion.
- the hybrid robot-assisted gait training apparatus is a gait training apparatus that enables walking gait training by reinforcing the muscle strength for moving the joints of the leg, and the waist and hip region of the human body, Thigh, calf and hip joint support part 100, respectively, coupled to the femoral support part 200, the lower leg support part 300, and includes a hip joint part 150, a knee joint part 250 for rotatably coupled to each support part. .
- Hip support portion 100 is a portion corresponding to the waist and hip portion of the human body, it may simply be responsible for the function of supporting the femoral support portion 200 and the lower support portion 300, combined with the upper body and strap of the human body of the human body It can also support the load on the upper body.
- the thigh support 200 is coupled to the thigh of the human body by a strap to fix the thigh (thigh).
- the lower support 300 may be fixed by being coupled to the calf and the strap as a portion corresponding to the calf of the human body.
- FIG. 6 is an explanatory diagram for explaining a state of use of the active robotic gait training system of the present invention.
- a person with a walking disability is equipped with a harness 112, a robot-assisted walking training device 10 on left and right legs, and walk training on a treadmill 60.
- Rope 114 mounted on the harness 112 is installed on the frame 65 in order to support the weight of the walking impaired, via a pulley 116 located on the upper side of the walking impaired, to support the weight ( 118). That is, the harness 112, the pulley 116, and the weight 118 that are worn on the disabled to support the weight of the walking impaired is composed of, the pulley 116 is connected to the rope 114 connected to the harness 112 By supporting the weight of the walking disabled, the weight 118 controls the vertical movement of the walking disabled through the rope (114).
- Arm holders 70 which can walk handicapped hand holding during walking training on both sides, and equipped with a stop switch (75) on the upper arm holder 70 can be stopped by the trainer if an emergency occurs during training. Is done.
- the controller 40 determines the current pedestrian's state and gait period from signals received from an inclination sensor, a load cell, and the like, and according to the determined gait period, the hip joint part 20, the knee joint part 30, and the FES part 50. Drive it.
- the walking impaired person in training can perform the walking training while watching the display of the training results output to the display unit of the controller 40, bringing the effect of the biofeedback.
- FIG. 7 illustrates an example of an FES unit integrated with a strap in the present invention
- FIG. 8 illustrates an example of mounting the FES unit using a strap or the like in the present invention.
- the FES unit 50 is located at the lower end of the lower support 300 by the controller 150 to apply a functional electric stimulation (Functional Electric Stimulation) to the ankle of the human body.
- the electrical stimulation part 40 may apply electrical stimulation in a contact manner by a strap or a sock on the ankle part of the human body.
- the walking training apparatus 10 includes a first rotation angle encoder 155 for measuring the joint rotation angle in the hip joint 150, and a second rotation for measuring the joint rotation angle in the knee joint 250.
- Each encoder 250 is provided, and the joint rotation angles detected by the rotation angle encoders 155 and 255 are transmitted to the controller 150, and the controller 150 adjusts gait characteristics for each individual with a walking impairment according to repetitive rotation angle data.
- the linear actuators 170 and 270 may be controlled by driving the amount of rotation and the rotational speed of the servomotors 178 and 278 according to each walking characteristic.
- the walking training apparatus 10 may include a load cell measuring a load applied to the hip joint 150 and a load cell measuring a load applied to the knee joint 250.
- the load cell transmits the load applied to the joints 150 and 250 to the control unit 150, and the control unit 150 controls the weight 118 to adjust the appropriate tension according to the walking characteristics of the disabled.
- the tension applied to the harness 112 coupled with the rope 114 and the pulley 116 is controlled, and optimized walking training can be performed in accordance with the characteristics of the individual walking impaired.
- the second support portion 25 has a tilt sensor for measuring the inclination with respect to the axis
- the electrical stimulation portion 40 is ankle joint low / fold for each walking cycle of the walking impaired by the tilt sensor
- the electric stimulator 40 may output a functional electric stimulus by detecting the walking moment measured by the inclination sensor, and conform to the pedestrian training optimized from the database on the walking characteristics of each walking impaired person accumulated in the controller 150.
- the functional electrical stimulation may be output at each walking cycle.
- FIG. 9 is a block diagram schematically illustrating a configuration for controlling an active robotic gait training system according to the present invention.
- the main arithmetic processor 500, the FES driver 510, the robotic gait controller 520, and the sensor part 530 are illustrated. ), A data storage unit 590, and a display unit 600.
- the main operation processing unit 500 receives the output signal of the sensor unit 530 and receives the pre-stored gait period patterns from the data storage unit 590, thereby receiving the FES control signal, the first linear actuator control signal, and the second linear actuator.
- the control signal is generated and transmitted to the FES driver 510, the first linear actuator driver 570, and the second linear actuator driver 580 of the robotic gait controller 520.
- the output signal of the received sensor unit 530 is stored in the data storage unit 590.
- the main operation processing unit 500 analyzes the walking training result of the walking trainer and outputs it to the display unit 600.
- the main operation processor 500 outputs the FES stimulus signal according to the FES control signal.
- the robotic gait controller 520 includes a first linear actuator driver 570 and a second linear actuator driver 580.
- the first linear actuator driver 570 drives the first linear actuator 170 by the first linear actuator control signal received from the main operation processor 500, so that the first linear actuator 170 is the femoral support 200. Rotate to raise or lower.
- the second linear actuator driver 580 drives the second linear actuator 270 according to the second linear actuator control signal received from the main operation processor 500, so that the second linear actuator 270 is the lower support 200. Rotate to raise or lower.
- the sensor unit 530 includes a tilt sensor 540, a load cell unit 550, and an encoder unit 560 to transmit the detected signal to the main operation processor 500.
- the inclination sensor 540 is mounted on a toe protector which wraps the thigh support or the toe (forefoot) portion of the robot-assisted walking training device 10 to detect the inclination of the lower leg or the inclination of the foot.
- the load cell unit 550 includes a first load cell 180 and a second load cell 280, and the first load cell 180 is a force (load) applied to lifting the femoral support part 200 from the hip joint 150.
- the second load cell 280 measures the force (load) applied to lifting the lower support 300 from the knee joint 250.
- the encoder unit 560 includes a first rotation angle encoder 155 and a second rotation angle encoder 255, and the first rotation angle encoder 155 measures the rotation angle of the hip joint using the first linear angle.
- the actuator control signal is generated, and the second rotation angle encoder 255 measures the rotation angle of the knee joint, and generates a second linear actuator control signal using the same. That is, by repeatedly measuring the joint rotation angle of the walking impaired through the encoder unit 560, and outputs a signal for determining the walking characteristics, according to the walking characteristics of the walking disabled 150 and knee joint through the signal
- the control signal for driving 250 can be processed.
- the data storage unit 590 stores the signal received by the main operation processor 500, and the display unit 600 outputs the signal received by the main operation processor 500.
- FIG. 10 is a block diagram schematically illustrating the configuration of the main arithmetic processing unit of FIG. 9, and includes a motion analysis unit 502, a patient information database 504, and a system control unit 506.
- the motion analysis unit 502 collects a walking pattern of a patient, that is, a walking disorder, and analyzes motion.
- the patient information database 504 stores the walking pattern and the analysis result received by the motion analysis unit 502 for each patient.
- the system control unit 506 reads the walking pattern from the patient information database 504, generates an FES control signal, a first linear actuator control signal, and a second linear actuator control signal, and generates the FES driver 510 and the robotic gait control unit.
- the first linear actuator driver 570 and the second linear actuator driver 580 of 520 are transmitted.
- 11 is an explanatory diagram for schematically explaining a method of driving an active robotic gait training system according to the present invention.
- the pedestrian with a gait training target (patient) is set, and basic information (personal information) of the pedestrian is input (S110).
- a walking pattern is collected by measuring a walking of a walking disabled person (S120).
- a gait event including a joint angle, a gait point, a gait period, and a gait speed are detected (S130).
- a personalized walking pattern is generated as a training walking pattern to be used for walking training, using the parameters detected in the walking parameter detection step (S140).
- the walking ability is evaluated using previously stored data (S150).
- the gait disabled person setting step (S110) to walk ability evaluation step (S150) may be referred to as a walking pattern collection step of collecting a walking pattern by analyzing the motion.
- the following describes the steps of database the detected or set data for each walking impaired person.
- the user of the walking training system that is, basic information (personal information) of the walking disabled is read (S210).
- an initial walking pattern to be used in the walking training system is set (S210).
- Personal adaptive training pattern generation step using the initial gait pattern in the initial gait pattern setting step (S210), the training gait pattern generated in the training gait pattern generation step (S140), and the previously stored gait disabled person database, An adaptive training pattern is generated (S230).
- the generated personal adaptive training pattern information is stored and updated (S240).
- the user registration information loading step (S210) to database update step (S240) may be referred to as a database for each walking impaired.
- the system is initialized (S310).
- the user is searched for and recognized (S320).
- the training intensity at the time of training using the training pattern is set (S330).
- the walking angle control of the left and right knee joints and the left and right hip joints (hip joints) of the gait training device 10 is divided into six steps to train the walking between the size of the normal gait and the patient gait.
- the magnetic pole position and the magnetic pole speed of the FES sensor are set, and the speed of the data acquisition (DAQ) is set (S340).
- the training parameter is set in the walking training apparatus 10 (S350).
- the gait training simulation is performed using the gait training pattern set only by the gait training device 10 to check the equipment driving situation. (S360).
- the data collection is also performed while walking training (S370).
- the data stored in the pedestrian training result analysis step will be used later in the pedestrian pattern collection step and the database for each walking person.
- the present invention relates to an active robotic gait training system and method that enables more active gait training based on the remaining gait ability of the gait disabled, and can be used for gait training of the gait disabled in a rehabilitation hospital.
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Abstract
Description
Claims (24)
- 대퇴부에 위치되며, 대퇴부와 같은 길이, 같은 방향을 이루는 대퇴지지부; 둔부에 위치되며, 일단이 상기 대퇴지지부의 상단에 장착되되, 상기 대퇴지지부가 회동가능하도록 장착되는 고관절 지지부; 하퇴부에 위치되며, 상기 대퇴지지부의 하단에 장착되되, 회동가능하도록 장착되는 하퇴지지부;를 포함하여 이루어진 로보틱 보행 훈련 시스템에 있어서,하퇴지지부의 하단에 위치되며, 앞발(발끝)부분을 감싸는 앞발 스트랩과 연결된 선이 고정되는 발끝고정 고리;하퇴지지부의 하단 또는 앞발 스트랩의 일측에 부착된 기울기 센서;상기 기울기 센서로부터 수신된 기울기 신호로부터 발목관절의 저굴근 또는 배굴근을 기능적 전기자극(FES)하기 위한 FES 제어신호를 생성하는 제어부;상기 제어부로부터 수신된 FES 제어신호에 따라 발목관절의 저굴근 또는 배굴근을 기능적 전기자극(FES)을 하도록 이루어진 FES부;를 포함하여 이루어진 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 대퇴부에 위치되며, 대퇴부와 같은 길이, 같은 방향을 이루는 대퇴지지부; 둔부에 위치되며, 일단이 상기 대퇴지지부의 상단에 장착되되, 상기 대퇴지지부가 회동가능하도록 장착되는 고관절 지지부; 하퇴부에 위치되며, 상기 대퇴지지부의 하단에 장착되되, 회동가능하도록 장착되는 하퇴지지부;를 포함하여 이루어진 로보틱 보행 훈련 시스템에 있어서,하퇴지지부의 하단에 위치되며, 앞발(발끝)부분을 감싸는 앞발 스트랩과 연결된 선이 고정되는 발끝고정 고리;하퇴지지부의 하단 또는 앞발 스트랩의 일측에 부착된 기울기 센서;상기 기울기 센서로부터 수신된 기울기 신호로부터 고관절 각도 제어신호를 생성하는 제어부;상기 제어부로부터 상기 고관절 각도 제어신호를 수신하고, 상기 대퇴지지부와 상기 고관절 지지부의 결합부인 고관절부에서, 상기 고관절 각도 제어신호에 따라 상기 대퇴지지부가 회동하도록 제1 선형 액튜에이터를 구동시키는 제1 선형 액튜에이터 구동부;를 포함하여 이루어진 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 대퇴부에 위치되며, 대퇴부와 같은 길이, 같은 방향을 이루는 대퇴지지부; 둔부에 위치되며, 일단이 상기 대퇴지지부의 상단에 장착되되, 상기 대퇴지지부가 회동가능하도록 장착되는 고관절 지지부; 하퇴부에 위치되며, 상기 대퇴지지부의 하단에 장착되되, 회동가능하도록 장착되는 하퇴지지부;를 포함하여 이루어진 로보틱 보행 훈련 시스템에 있어서,하퇴지지부의 하단에 위치되며, 앞발(발끝)부분을 감싸는 앞발 스트랩과 연결된 선이 고정되는 발끝고정 고리;하퇴지지부의 하단 또는 앞발 스트랩의 일측에 부착된 기울기 센서;상기 기울기 센서로부터 수신된 기울기 신호로부터 무릎관절 각도 제어신호를 생성하는 제어부;상기 제어부로부터 상기 무릎관절 각도 제어신호를 수신하고, 상기 하퇴지지부와 상기 대퇴 지지부의 결합부인 무릎관절부에서, 상기 무릎관절 각도 제어신호에 따라 상기 하퇴지지부가 회동하도록 제2 선형 액튜에이터를 구동시키는 제2 선형 액튜에이터 구동부;를 포함하여 이루어진 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제2항 또는 제3항 중 어느 한 항에 있어서,상기 제어부는 상기 기울기 센서로부터 수신된 기울기 신호로부터 발목관절의 저굴근 또는 배굴근을 기능적 전기자극(FES)하기 위한 FES 제어신호를 생성하며,상기 제어부로부터 수신된 FES 제어신호에 따라 발목관절의 저굴근 또는 배굴근을 기능적 전기자극(FES)을 하도록 이루어진 FES부를 더 구비하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제1항에 있어서,상기 제어부는 상기 기울기 센서로부터 수신된 기울기 신호로부터 고관절 각도 제어신호와 무릎관절 각도 제어신호를 생성하며,상기 제어부로부터 상기 고관절 각도 제어신호를 수신하고, 상기 대퇴지지부와 상기 고관절 지지부의 결합부인 고관절부에서, 상기 고관절 각도 제어신호에 따라 상기 대퇴지지부가 회동하도록 제1 선형 액튜에이터를 구비하며,상기 제어부로부터 상기 무릎관절 각도 제어신호를 수신하고, 상기 하퇴지지부와 상기 대퇴 지지부의 결합부인 무릎관절부에서, 상기 무릎관절 각도 제어신호에 따라 상기 하퇴지지부가 회동하도록 제2 선형 액튜에이터를 구동시키는 제2 선형 액튜에이터 구동부를 더 구비하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제5항에 있어서,상기 제어부는 기울기 신호로부터 보행주기를 추정하고, 기 저장된 고관절 구동 패턴으로부터, 추정된 보행주기에 따른 고관절 각도 제어신호를 생성하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제5항에 있어서,상기 제어부는 기울기 신호로부터 보행주기를 추정하고, 기 저장된 무릎관절 구동 패턴으로부터, 추정된 보행주기에 따른 무릎관절 각도 제어신호를 생성하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제2항에 있어서상기 제어부는 상기 기울기 센서로부터 수신된 기울기 신호로부터 무릎관절 각도 제어신호를 생성하며,상기 제어부로부터 상기 무릎관절 각도 제어신호를 수신하고, 상기 하퇴지지부와 상기 대퇴 지지부의 결합부인 무릎관절부에서, 상기 무릎관절 각도 제어신호에 따라 상기 하퇴지지부가 회동하도록 제2 선형 액튜에이터를 구동시키는 제2 선형 액튜에이터 구동부를 더 구비하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제2항에 있어서,제1 선형 액튜에이터는, 일단이 고관절지지부의 일단에 장착되어 있으며, 다른 일단은 대퇴지지부의 상단에 장착되는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제3항에 있어서,제2 선형 액튜에이터는, 일단이 대퇴지지부에 장착되어 있으며, 다른 일단은 하퇴지지부의 상단에 장착되는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제2항에 있어서,고관절부는 대퇴지지부가 회동된 각도를 측정하기위한 제1 인코더가 장착되어 있는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제3항에 있어서,무릎관절부는 하퇴지지부가 회동된 각도를 측정하기위한 제2 인코더가 장착되어 있는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제11항에 있어서제어부는 기울기 신호로부터 보행주기를 추정하고, 제1 인코더로부터 고관절 각도신호를 수신하여, 기 저장된 고관절 구동 패턴으로부터, 추정된 보행주기에 따른 고관절 각도 제어신호를 생성하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제12항에 있어서,상기 제어부는 기울기 신호로부터 보행주기를 추정하고, 제2 인코더로부터 무릎관절 각도신호를 수신하여, 기 저장된 무릎관절 구동 패턴으로부터, 추정된 보행주기에 따른 무릎관절 각도 제어신호를 생성하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제9항에 있어서제1 선형 액튜에이터와 대퇴지지부의 사이에 로드셀이 장착되는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제10항에 있어서,제2 선형 액튜에이터와 하퇴지지부의 사이에 로드셀이 장착되는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제5항에 있어서,고관절부와 무릎관절부에 각각 인코더를 구비한 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제5항에 있어서,제1 선형 액튜에이터와 대퇴지지부의 사이에 제1로드셀이 장착되며, 제2 선형 액튜에이터와 하퇴지지부의 사이에 제2로드셀이 장착되는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제5항에 있어서,상기 대퇴지지부, 상기 고관절 지지부, 상기 하퇴지지부가 일측 다리를 위한 로봇-보조형 보행훈련장치를 이루며,좌우측 다리를 위한 한쌍의 로봇-보조형 보행훈련장치와,상기 한쌍의 로봇-보조형 보행훈련장치를 장착하고 보행훈련을 하기위한 트레드밀;를 더 구비하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제19항에 있어서,하니스;하니스에 장착된 로우프가 거치는 도르래를 장착하기 위한 프레임;상기 도르래를 거친 로우프의 일단에 장착된 추;를 더 구비하는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 제5항에 있어서,대퇴지지부가 대퇴부와 결합하기 위한 대퇴부 스트랩이 대퇴지지부에 장착되어 있으며,하퇴지지부 상단과 하퇴부가 결합하기 위한 하퇴부 스트랩과, 하퇴지지부 하단과 발목이 결합하기 위한 발목 스트랩이 장착되어 있는 것을 특징으로 하는 로보틱 보행 훈련 시스템.
- 보행장애자의 보행패턴을 수집하고 동작을 분석하는 보행패턴 수집단계;보행패턴 수집단계에서, 수집된 보행패턴 및 분석결과를 보행장애자별로 저장하는 보행장애자별 데이터베이스화 단계;보행장애자별 데이터베이스화 단계로부터 저장된 보행패턴들로 부터, FES제어신호, 고관절부 및 무릎관절부를 구동시키는 액튜에이터 제어신호를 생성하여 출력하는 시스템 제어단계;를 포함하는 로보틱 보행 훈련 시스템의 구동방법에 있어서,보행패턴 수집단계는,보행훈련대상의 개인 정보가 입력되면, 보행장애자의 보행으로부터 보행패턴을 수집되는 보행패턴 수집단계;보행패턴 수집단계에서 수집된 데이터에서, 관절각도, 보행시점을 포함하는 보행 이벤트(gait event), 보행주기, 보행속도를 검출하는 보행 파라미터검출단계;보행 파라미터검출단계에서 검출된, 보행주기를 포함하는 보행 파라미터로부터, 보행훈련시 사용될 훈련용 보행패턴을 생성하는 훈련용 보행패턴 생성단계;를 포함하여 이루어진 것을 특징으로 하는 로보틱 보행 훈련 시스템의 구동방법.
- 제22항에 있어서,보행장애자별 데이터베이스화 단계는,기 저장된 보행패턴 중 설정된 초기 보행패턴을 읽어들이는 초기 보행패턴설정단계;초기 보행패턴설정단계에서 읽어들인 초기 보행패턴과, 상기 훈련용 보행패턴 생성단계에서 생성한 훈련용 보행패턴과 기 저장된 보행장애자 데이터베이스을 이용하여, 훈련용 보행패턴을 재 조정하는 개인 적응 훈련 패턴 생성단계;개인 적응 훈련 패턴 생성단계에서 생성된 훈련용 보행패턴의 정보를 갱신, 저장하는 데이타베이스 업데이트 단계;를 포함하여 이루어진 것을 특징으로 하는 로보틱 보행 훈련 시스템의 구동방법.
- 제23항에 있어서,시스템 제어단계는,설정된 훈련레벨 강도에 따라, FES 센서의 자극위치, 자극 속도를 설정하는 FES 센서 설정단계;보행장애자가 탑승되지 않은 보행 훈련 장치로, 설정된 보행훈련 패턴으로 보행훈련 시뮬레이션이 행하여지고 장비구동상황을 점검하여 이상여부를 판단하는 보행훈련 시뮬레이션단계;를 포함하여 이루어진 것을 특징으로 하는 로보틱 보행 훈련 시스템의 구동방법.
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| CN105007879A (zh) * | 2012-12-12 | 2015-10-28 | 穆格公司 | 具有阴影腿的康复设备 |
| CN105007879B (zh) * | 2012-12-12 | 2016-11-30 | 穆格公司 | 具有阴影腿的康复设备 |
| CN105411593A (zh) * | 2014-09-12 | 2016-03-23 | 三星电子株式会社 | 用于识别步态任务的方法和设备 |
| CN104586610A (zh) * | 2015-01-30 | 2015-05-06 | 陕西科技大学 | 一种基于液压驱动的助力行走装置 |
| CN108697377A (zh) * | 2016-01-25 | 2018-10-23 | 贝泰米亚公司 | 步态分析器系统和方法 |
| CN105596181A (zh) * | 2016-01-30 | 2016-05-25 | 胡大勇 | 一种髋关节支具系统及控制方法 |
| CN108421162A (zh) * | 2018-04-08 | 2018-08-21 | 曹福成 | 生物反馈闭链电刺激下肢康复机器人 |
| CN108421162B (zh) * | 2018-04-08 | 2023-07-07 | 曹福成 | 生物反馈闭链电刺激下肢康复机器人 |
| CN110613916A (zh) * | 2019-08-16 | 2019-12-27 | 成都体育学院 | 一种体育比赛使用的赛前热身多功能一体机 |
| CN110652427A (zh) * | 2019-10-21 | 2020-01-07 | 漫步者(天津)康复设备有限公司 | 一种随动式下肢步态训练康复机器人 |
| CN110812022A (zh) * | 2019-11-25 | 2020-02-21 | 西安星球通智能装备技术有限公司 | 一种具有下肢康复训练功能的自动轮椅 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101384988B1 (ko) | 2014-04-21 |
| WO2012138203A3 (ko) | 2013-01-17 |
| US9314393B2 (en) | 2016-04-19 |
| US20140094345A1 (en) | 2014-04-03 |
| JP2014509919A (ja) | 2014-04-24 |
| KR20120115168A (ko) | 2012-10-17 |
| JP6175050B2 (ja) | 2017-08-02 |
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