View
1
Download
0
Category
Preview:
Citation preview
What is Cerebral Palsy? • Group of permanent neurological disorders that affect the developing fetal or infant brain
• Neurological disorder affects movement and posture of the child, preven9ng full coordina9on and motor development of the muscles
• Ac9vity limita9ons due to: - Body weakness - Muscle spas9city - Rigidity of muscles - Poor coordina9on of muscles
Children with Cerebral Palsy • Cerebral Palsy is a common motor impairment in children • 3.3 out of 1,000 children are diagnosed with having Cerebral Palsy¹ Treatments available • Physical Therapy • Ortho9cs • Medica9ons (e.g., Baclofen or injec9on of botulinum toxin) • Rhizotomy or orthopedic surgery • Spinal bracing
Physical Therapy Assessments • Melbourne Assessment of Unilateral Upper Limb Func9on • Quality of Upper Extremity Test • Upper Extremity Fugl-‐Meyer Assessment (UEFMA)
Electrical S;mula;on • Progress seen immediately • Low amplitude also promises improvement
Hap;c Master Robo;c System² • Virtual reality system with game simula9on • Improves ac9ve supina9on range of mo9on
Results Evalua9on Criteria • Number of parts • Loca9on and weight of motors • Expanded degrees of freedom / ac9ve range of mo9on • Overall weight
Conclusions • The first design proved too cumbersome and not portable • The current design uses motors, bands, and cuff a[achments to mimic muscle structure of natural arm in four degrees of freedom
• Current design is wearable and portable
Materials & Methods
Arm Rehabilita;on Device for Children with Cerebral Palsy Mary Jacqueline Hernandez, Baoliang Zhao, Dr. Carl Nelson
Department of Mechanical and Materials Engineering , University of Nebraska–Lincoln
Introduc;on
Future Work • Modifica9on of design in terms of material selec9on and dimensional op9miza9on
• Design sleeve for electrical s9mula9on • Prototype the design • Evaluate prototype for improvements at outpa9ent clinics u9lizing pa9ent surveys
To design an arm rehabilita9on device that will: • improve the child’s arm movement control • improve range of mo9on • reduce spas9city
Purpose
Acknowledgements • Dr. Carl Nelson, UNL faculty • Baoliang Zhao, UNL Graduate Student • UNL McNair Scholars Program
Web.resna.org ¹Arneson CL, Durkin MS, Benedict RE, Kirby RS, Yeargin-Allsopp M, Van Naarden Braun K, Doernberg NS. Prevalence of cerebral palsy: Autism and developmental disabilities monitoring network, three sites, United States, 2004. Disability and Health Journal.2009; 2(1): 45-48. ²Fluet GG, Qiu Q, Kelly D, Parikh HD, Ramirez D, Saleh S, Adamovich S. Interfacing a haptic robotic system with complex virtual environments to treat impaired upper extremity motor function in children with cerebral palsy. Developmental Neurorehabilitation. 2010; 13(5): 335-345.
msis.jsc.nasa.gov itl.nist.gov
Figure 1. 1st AutoCad Design
Figure 4. Mechanics of Prona9on & Supina9on
www.salisburyfes.com/pdfs/upper%20limb.PDF
Figure 5. Electrode placement for reaching exercises
safeguardk9.com
Figure 6. Neoprene sleeve to be used for electrical s9mula9on
Figure 3. Side view of current design
Figure 2. Current SolidWorks Design motor
shoulder support
band
arm cuff
Recommended