APatient Rehabilitation System using aMan æ Machine ... · A Patient Rehabilitation System using a Man æ Machine Interface Design Binson V A, Jo Joy, Anish Thomas Assistant Professor,

A Patient Rehabilitation System using a ManMachine Interface Design

Binson V A, Jo Joy, Anish Thomas

Assistant Professor, Department of AEI, Saintgits college, Kottayam, India

Assistant Professor, Department of EEE, Saintgits college, Kottayam, India

Assistant Professor, Department of AEI, Saintgits college, Kottayam, India

Abstract: This paper presents the design of a man machine interface for controlling of a rehabilitationrobot that can perform active and passive exercises for lower limbs. The system with man machine interfaceand robot manipulator can learn physiotherapist manual exercises and perform them by itself like aphysiotherapist. Thus the rehabilitation capability is conveyed to the patient directly. The System alsoprovides a graphical user Interface by which the treatment period can be observed and recorded. Thisinterface can also be used for web based remote therapy. Rehabilitation of knee and hip are carried out andthe test results are presented.

I. Introduction

The role of the rehabilitation process is to restore functionality of previously damaged limbs. It is mostimportant to return patients to society, reintegrate them into social life and therefore improve the patients'quality of life. Throughout therapy, physical exercises for extremities like arms and legs have a key role inthe recovery of the patient. Therapeutic exercises consist of active or passive physical movements of thepatient, carried out through the therapist, or of movements carried out of the patient with the assistance ofthe physiotherapist, depending on the condition of the patient. For rehabilitation either the patient has togo to a healthcare center, or the physiotherapist has to come to the patient. Studies for robots inrehabilitation have been increased due to the time consuming process of rehabilitation.

Studies carried out in the closer past have proved many advantages of rehabilitation robots compared toclassic therapy methods [2]. In addition robotic therapy provides better possibilities to acquire and storeinformation such as the therapy response of the patient [3]. There are several studies that use intelligenttechniques and their aims are to transfer physiotherapist rehabilitation capacity to patient directly. In thisstudy, a man machine interface (MMI) has been designed in order to control a designed and producedrehabilitation robot. Unlike other existing projects the robot manipulator (RM) that is used in this studycan perform active and passive exercises for lower limbs and it can perform knee flexion extension, hipextension flexion and hip abduction adduction movements. Also the rehabilitation system that consists ofhuman machine interface and robot manipulator can learn physiotherapist manual exercises and performthem by itself like a physiotherapist. So this rehabilitation capability is conveyed to patient directly. So,single physiotherapist rehabilitates more than one patient at the same time with this system. The humanmachine interface includes an easy to use graphical user interface. With this interface, the treatment periodcan be observed and saved. Furthermore, the interface has been designed to be fit for web based remotetherapy. Thus, difficulties of transferring patients to medical centers can be eradicated. Test results arepresented for direct rehabilitation of knee and hip.

II. System Description

The system consists of three basic components (See Figure 1) Physiotherapist, the man machine interfaceand robot manipulator(RM). The system can perform Physiotherapist’s manual exercises as well as to carryout all standard active and passive exercises. The modeling of the manual exercises has been named

Proceedings of The National Conference on Man Machine Interaction 2014 [NCMMI 2014] 1

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IV.Conclusion

The paper describes a Man machine interface to translate the capabilities of a physiotherapist directly to arobot manipulator. Furthermore, standard active and passive exercises can be performed by this HMI. Thegraphical user interface created for the HMI gives the user an easy access to all functions of the HMI. Usingthe developed HMI the physiotherapist can teach exercises into RM through performing exercises directlyon the patient. The exercises covered are knee and hip flexion extension as well as hip abductionadduction. The previously taught exercises can be repeated effectively by the RM itself. The exercise resultsare evaluated automatically and displayed by numerical and graphical means. The results are stored in adatabase for later use. The realized interfacing system is made of flexible nature to be fit for web basedapplication.

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Documents

APatient Rehabilitation System using aMan æ Machine ... · A Patient Rehabilitation System using a Man æ Machine Interface Design Binson V A, Jo Joy, Anish Thomas Assistant Professor,