Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
권호 표지
DOI QR코드

DOI QR Code

Biomechanical Assessment of Lifting Chair with Hip-up Function

힙업기능이 적용된 기립보조의자의 생체역학적 평가

  • Bae, Ju-Hwan (Department of Mechatronics Engineering, Dong-Eui University) ;
  • Moon, In-Huyk (Department of Mechatronics Engineering, Dong-Eui University)
  • 배주환 (동의대학교 메카트로닉스공학과) ;
  • 문인혁 (동의대학교 메카트로닉스공학과)
  • Received : 2011.01.26
  • Accepted : 2011.05.25
  • Published : 2011.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Lifting chair is a typical assistive product to aid for standing up and sitting down for persons with disability. It is particularly useful for the elderly persons whose muscular system is weakened by degenerative joint disease. This paper describes biomechanical assessments of lifting chair with hip-up function. In experiments we measured 3D motion and electromyographic(EMG) signal on the femoral muscle when subject performs the standing motion on the predetermined seat height. Based on assessment of the standing motion, we select the hip-up angle as 15 degrees to cover the relative femoral angle when EMG peak value is appeared. Using an implemented prototype lifting chair with hip-up function we perform standing experiments with five subjects. The experimental results show that the lifting and hip-up functions are effective to assist for standing up motion with less muscle force.

Keywords

References

  1. B. Garrett, D. Singiser, and S.M. Banks, "Back injuries among nursing personnel: The relationship of personal characteristics, risk factors, and nursing practices," J. AAOHN, vol. 40, no. 11, pp. 510-516, 1992.
  2. ISO, ISO 9999 Assistive products for persons with disability - Classification and terminology, 2007.
  3. K. Fogg, "Stand-aid invalid wheel-chair," United States Patent, no. 4119164, 1978.
  4. E. Perry, "Power stand-up and reclining wheelchair," United States Patent, no. 53366036, 1994.
  5. C.C. Auel, "All-purpose rocking, swiveling, reclining, and lifting chair," United States Patent, no. 5,024,486, 1991.
  6. E.D. Hendreson, "Elevator chair apparatus," United States Patent, no. 5165753, 1992.
  7. S. Komura, T. Kaneda, K. Yanashia, K. Adachi and I. Mizuseki, "Elevation chair," United States Patent, no. 6783179-B2, 2004.
  8. J. Keegan, "Alterations of the lumbar curve related to posture and seating," J. Bone Joint Surg. Am., 53-A, pp. 589-603, 1953.
  9. E.A. Clancy, "Electromyogram amplitude estimation with adaptive smoothing window length," IEEE Trans., Biomed. Eng., vol. 46, no, 6, pp. 717-729, 1999. https://doi.org/10.1109/10.764948
  10. Y. Hirata, J. higuchi, T. Hatsukari and K. Kosuge, "Sit-tostand assist system by using handrail and electric bed moving up and down," Proc. IEEE/RAS-EMBS Int'l. Conf. on Biomed. Rob. and Biomech., pp. 187-192, 2008.
  11. J.H. Bae, G.S. Kim, J.C. Ryu, and I. Moon, "Design and Control of Seat Mechanism for Multi-postures Controllable Wheelchair," J. the KSPE, Vol. 27, No. 5, pp. 102-111, 2010.
  12. A. Cappozzo, F. Catani, A. Leardini, M.G. Benedetti, U. DellaCroce, "Position and orientation in space of bones during movement: experimental artifacts," J. Clin. Biomech., vol. 11., no. 2, pp. 90-100, 1996. https://doi.org/10.1016/0268-0033(95)00046-1
  13. D.B. Jenkins, Hollinshead's Functional Anatomy of the Limbs and back 8/e, Philadelphia, Pa: Saunders, pp. 423-437, 2002.
  14. E.B. Hutchinson, P.O. Riley, and D.E. Krebs, "A dynamic analysis of the joint forces and torques during rising from a chair," IEEE Trans. on Rehab. Eng., vol. 2, no. 2. pp. 49-55, 1994. https://doi.org/10.1109/86.313146
  15. http://sizekorea.kats.go.kr.

Cited by

  1. UPO: A Chair That Lifts Hips While Standing Up Using the Four-Link Mechanism vol.33, pp.4, 2014, https://doi.org/10.5143/JESK.2014.33.4.281