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Development of a hip model for impact testing of bedsore prevention cushions

욕창예방 방석의 충격시험용 둔부 모형 개발

  • JUNG, SUNGBAE ;
  • YUK, SUNWOO ;
  • Ki-Won Choi ;
  • Sangsoo Park (Dept. of Biomedical Engineering, Eulji Univ)
  • 정성배 (근로복지공단 재활공학연구소) ;
  • 육선우 (근로복지공단 재활공학연구소) ;
  • 최기원 (근로복지공단 재활공학연구소) ;
  • 박상수 (을지대학교 의료공학과)
  • Received : 2024.03.01
  • Accepted : 2024.04.20
  • Published : 2024.05.31

Abstract

The bedsore prevention cushion serves to prevent the skin on the buttocks of a wheelchair user from being damaged through friction with the wheelchair seat. This is because it absorbs some of the weight applied to the wheelchair seat and allows the weight to be applied evenly to the entire contact surface. For the impact test, which is part of the performance testing of bedsore prevention cushions, a hip model that represents the sitting posture of a wheelchair user is required. In this study, a hip model was manufactured for impact testing of bedsore prevention cushions for wheelchairs. Performance tests for pressure bedsore prevention cushions for wheelchairs include KSP 0236, a Korean standard, and KS P ISO 16840-2, an ISO international standard. The hip model proposed in KS P ISO 16840-2 was more suitable for impact testing of bedsore prevention cushions for wheelchairs. However, the guidelines for making hip models proposed by international standards need to be modified to reflect the advancement of model making technology and use easier methods. We propose a new hip model production method that produces a hip model out of plastic all at once and additionally attaches SS-41 steel plates processed into the shape of the hip to make the mass of the model similar to the human body.

욕창 예방 방석은 휠체어 사용자 둔부의 피부가 휠체어 좌석과 마찰을 통하여 손상되는 것을 방지하는 역할을 한다. 휠체어 좌석에 가해지는 체중의 부하를 일부 흡수하고 체중이 균일하게 전체 접촉면에 작용할 수 있도록 하기 때문이다. 욕창 예방 방석의 성능을 시험하는 항목의 일부인 충격시험을 위해서는 휠체어 사용자의 앉은 자세를 대신한 둔부 모형이 필요하다. 본 연구에서는 휠체어용 욕창 예방 방석의 충격시험을 위한 둔부 모형을 시험 제작하였다. 휠체어용 욕창 예방 방석의 성능 시험에는 한국 표준인 KSP 0236과 ISO의 국제표준인 KS P ISO 16840-2가 있으며, 휠체어용 욕창 예방 방석 충격시험에는 KS P ISO 16840-2에서 제안한 둔부 모형이 더 적합하였다. 그러나 KS P ISO 16840-2에서 제안한 둔부 모형의 제작 지침은 모형 제작 기술의 발전을 반영하여 더 쉬운 방법으로 수정이 필요하다. 우리는 플라스틱으로 둔부 모형을 한 번에 제작하고, 모형의 중량을 인체에 유사하게 만들기 위하여 둔부 모양으로 가공한 SS-41 철판을 추가로 부착하는 새로운 둔부 모형 제작 방법을 제안한다.

Keywords

Acknowledgement

본 연구는 보건복지부의 재원으로 한국보건산업진흥원의 보건의료기술연구개발사업 지원에 의하여 이루어진 것임(과제고유번호: HK23C0009).

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