| Project/Area Number |
12470311
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Orthopaedic surgery
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| Research Institution | Sapporo Medical University |
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Principal Investigator |
YOKOGUSI Kazutosi Sapporo Medical University, School of Medicine, Associate Professor, 医学部, 助教授 (20145593)
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| Co-Investigator(Kenkyū-buntansha) |
NARITA Hiroshi Sapporo Medical University, School of Medicine, Assistant Professor, 医学部, 講師 (30228093)
YAMAKOSHI Ken-ichi Kanazawa University, Faculty of Engineering, Professor, 工学部, 教授 (40014310)
UCHIYAMA Eiichi Sapporo Medical University, School of Medicine, Instructor, 医学部, 助手 (70221108)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥14,100,000 (Direct Cost: ¥14,100,000)
Fiscal Year 2002: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2001: ¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 2000: ¥6,700,000 (Direct Cost: ¥6,700,000)
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| Keywords | powered wheelchair / snowfall conditions / rehabilitation engineering / seating system / Motion Analysis |
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| Research Abstract |
We designed lightweight, compact size and high quality motorized wheelchair. New wheelchair has six-wheel, part time 4-wheel-drivc mechanism and equipped nickel-hydrogen battery. 6W-NProto can carry using compact-size automobile. Comparison test of 6W-NProto and Yamaha JW-3, which is original model of the 6W-NProto, were performed and 6W-NProto showed good driving performance in every snowfall conditions.
Specification of the new 6-wheel motorized wheelchair (6W-NProto) : Weight 48.5 kg ; Front free-caster, center-wheel drive, rear-wheel sub-drive ; Wheel-base 4.60mm/310mm [front-center/center-rear] ; Tire size 150mm/350mm/200mm [front/center/rear, diameter] ; Power 90x2W/70x2W [main/sub] ; Power/weight ratio 6.6 W/kg ; Battery Nickel-Hydrogen Battery x3 ; Max velocity 6 km/h. Seating system is adjustable for every physically handicapped person and create stable seating circumstances. Frame structure is flexible to follow the every terrain condition.
Comparison test between 6W-NProto and Yamaha JW-3 : The driving performance in different snowfall conditions on level and ramp roads, and on steps was tested. Compared with the Yamaha JW-3, the 6W-NProto performed better driving performance in all terrain conditions due to a high power/weight ratio and 4-wheei-drive. The 6W-NProto, which equipped assisted rear-wheel drive, was able to clear 120 mm step. Even on slushy roads, the most difficult conditions for powered wheelchair, the most controllable wheelchair was the 6W-Nproto.
In conclusion, 6W-Nproto showed the best driving performance in all snowfall conditions and steps.
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