• Title/Summary/Keyword: Rehabilitation device

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Design of an Elbow Rehabilitation Robot based on Force Measurement and its Force Control (힘측정기반 팔꿈치 재활로봇 설계 및 힘제어)

  • Kim, Han-Sol;Kim, Gab-Soon
    • Journal of Institute of Control, Robotics and Systems
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    • v.21 no.5
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    • pp.413-420
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    • 2015
  • This paper describes the design of an elbow rehabilitation robot based on force measurement that enables a severe stroke patient confined to their bed to receive elbow rehabilitation exercises. The developed elbow rehabilitation robot was providewitha two-axis force/torque sensor which can detect force Fz and torque Tz, thereby allowing it to measure therotational force (Tz) exerted on the elbow and the signal force Fz which can be used as a safety device. The robot was designed and manufactured for severe stroke patients confined to bed, and the robot program was manufactured to perform flexibility elbow rehabilitation exercises. Asa result of the characteristics test of the developed rehabilitation robot, the device was safely operated while the elbow rehabilitation exercises were performed. Therefore, it is thought that the developed rehabilitation robot can be used for severe stroke patients.

Suggest Improvement for Medical Device Made in Korea by the Investigation of Domestic Medical Device Percentage and Survey of Medical Device Users and Manager (국산 의료기기 사용률과 사용자 및 관리자 인식 조사를 통한 국산 의료기기 개선 방안)

  • Lee, Jyung Hyun
    • Journal of rehabilitation welfare engineering & assistive technology
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    • v.11 no.4
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    • pp.299-306
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    • 2017
  • The Korean medical device industry has increased dramatically due to various investments in the domestic medical device industry and the introduction of new technologies, but the domestic medical device usage rate in great hospital is still low. In this paper, improvement point for domestic medical device was suggested by domestic medical device usage rate and user and manager's perception survey in great hospitals in Korea. To do this, a survey on the types of medical devices and domestic medical device usage rates were conducted at four national university hospitals in Korea. From this results, the priority survey medical devices were selected. Improvements of Korean medical devices were suggested by failure mode analysis and user awareness surveys for the priority survey medical devices.

System Analysis of Research Trends of Assistive Devices for People with Disabilities Using Semantic Network Analysis: 2002 to 2014 (언어 네트워크 분석(Semantic Network Analysis)을 활용한 장애인보조기구 연구동향 분석: 2002년 ~ 2014년)

  • Kim, ChangGeol;Kang, JungBae
    • Journal of rehabilitation welfare engineering & assistive technology
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    • v.10 no.1
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    • pp.93-100
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    • 2016
  • This study analyzed research trends of assistive devices used to prevent and support disability and increase convenience for people with disabilities in their daily lives. As a result, related research has continuously increased, and the research area has expanded from survey research to service-related research and assistive device development research. In addition, with regard to the use of related terms, terms such as 'rehabilitation engineering' and 'rehabilitation assistive technology' were used in the early stages. Currently, terms such as 'assistive technology', 'assistive technology service', 'assistive technology device', and 'assistive device' have been mainly used.

Design of a Robotic Device for Effective Shoulder Rehabilitation (효과적인 견관절 재활을 위한 로봇의 설계)

  • Lee, Kyoung-Soub;Park, Jeong-Ho;Park, Hyung-Soon
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.41 no.8
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    • pp.505-510
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    • 2017
  • This paper presents a low-cost robotic device for shoulder rehabilitation, which is capable of treating various shoulder disabilities. A 3-DOF passive shoulder joint tracking module was designed to allow for translational motion of the shoulder joint center during arm swing, which is essential for natural shoulder movement. The weight of the user's arm and the device were compensated for by springs, to enable gravity-free shoulder motion. In order to reduce the device's cost, only one actuator was used, which can be aligned with the user's shoulder joint in various orientations. The device is capable of implementing five representative shoulder motions, including flexion/extension, abduction/adduction, horizontal abd/adduction, internal/external rotation, and oblique raise. The proposed low-cost shoulder rehabilitation robot is expected to provide effective rehabilitation for patients with various shoulder impairments.

Design Method of Active Standing-to-Walking Assistive Device for Rehabilitation Therapy (재활치료를 위한 능동형 기립-보행 보조기구 설계 방법)

  • Seong-Jun Kim;Sae-Jin Kim;Yun-Mo Kang;Yu-Sin Jeon;Chae-Hun An
    • Journal of the Korean Society of Industry Convergence
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    • v.26 no.6_3
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    • pp.1315-1323
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    • 2023
  • Rehabilitation assistive devices not only assist the rehabilitation therapy and daily life of the disabled and the elderly, but also assist the labor of their caregivers, so various functions are required to improve their quality of life. In this study, a design method considering its practicality is introduced for an active rehabilitation assistive device that can perform both standing and walking assistance by driving various actuators. For this purpose, the force required to assist standing was calculated using statics with the body segmentation method. Also, the overturning stability of the device was verified for various physical conditions and postures. The actuator in the active rehabilitation assistive device was operated by a patient using a graphical user interface in an embedded computer and a touch panel for easy usage. The detailed design was performed for implementation through the help of 3D-CAD and the finite element analysis, and a prototype was produced. Finally, it was proven that the design goal was satisfied by experimental validation.

Development of the Portable Weighing Scale Automatic Device for Disabled Wheelchair Users (휠체어 탑승 장애인을 위한 이동형 체중측정 자동화 장치 개발)

  • Jang, Kyung-Bae;Lee, Kyeong-Wan;Koo, Do-Hoon
    • IEMEK Journal of Embedded Systems and Applications
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    • v.8 no.1
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    • pp.61-67
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    • 2013
  • Wheelchair users have a difficulty in managing their weight because there is lack of measure systems and even though the users have the system, it costs too much. Thus, purpose of this study is for developing the portable weight scale automatic device to help wheelchair users by monitoring their weight on the wheelchairs in real time. Portable weight scale automatic device composed by four strain gauges, and the device was connected with mobile phone so that wheelchair users were able to check their weight in real time. In order to evaluate the device performance, 10 normal subjects and 10 disabled subjects participated in this study. The subjects' truth weight and measured weight by the device are compared. The weigh difference within normal subjects was $0.75{\pm}0.80kg$, and the weigh difference within disabled subjects was $1.02{\pm}0.74kg$. Difference between the truth weigh and the measured weigh were not statistically different. The reason for this error occurred is inaccuracy of the loadcell installation and calibration. If this problems get solved, the measured indicator is expected to help wheelchair users to manage their weight.

Basic Experiment on Rehabilitation of Upper-Limb Motor Function Using Haptic-Device System (햅틱 장치를 이용한 상지 운동기능 장애인의 재활치료에 관한 기초 실험)

  • Lee, Ho-Kyoo;Kim, Young-Tark;Takahashi, Yoshiyuki;Miyoshi, Tasuku;Suzuki, Keisuke;Komeda, Takashi
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.35 no.5
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    • pp.459-467
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    • 2011
  • Rehabilitation exercises must maintain a patient's interest and permit a quantitative evaluation of the rehabilitation. We have developed a haptic-device system. When users move a grip, the haptic device provides a virtual force that either assists the movement of their arm or working against it. To investigate the functional effect of this system in a rehabilitation program, we used for five subjects with motor-function disorders and measured the grip position, velocity, force exerted on the grip, and EMG activities during a reaching task of one subject. The accuracy of the grip position, velocity and trajectories patterns were similar for all the subjects. The results suggested that the EMG activities were improved by applying the virtual force to the grip. These results can be used for the development of rehabilitation programs and evaluation methods.

Design of a Novel Gait Rehabilitation Robot with Upper and Lower Limbs Connections (상하지 연동된 새로운 보행재활 로봇의 설계)

  • Yoon, Jung-Won;Novandy, Bondhan;Christi, Christi
    • Journal of Institute of Control, Robotics and Systems
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    • v.14 no.7
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    • pp.672-678
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    • 2008
  • This paper proposes a new rehabilitation robot with upper and lower limb connections for gait training. As humans change a walking speed, their nervous systems adapt muscle activation patterns to modify arm swing for the appropriate frequency. By analyzing this property, we can find a relation between arm swinging and lower limb motions. Thus, the lower limb motion can be controlled by the arm swing for walking speed adaptation according to a patent's intension. This paper deals with the design aspects of the suggested gait rehabilitation robot, including a trajectory planning and a control strategy. The suggested robot is mainly composed of upper limb and lower limb devices, a body support system. The lower limb device consists of a slider device and two 2-dof footpads to allow walking training at uneven and various terrains. The upper limb device consists of an arm swing handle and switches to use as a user input device for walking. The body support system will partially support a patient's weight to allow the upper limb motions. Finally, we showed simulation results for the designed trajectory and controller using a dynamic simulation tool.