• 재활복지공학회논문지
• /
• 제3권1호
• /
• pp.49-53
• /
• 2009

본 논문은 외상성 척수손상 장애인(SCI)과 뇌성마비장애인(CP)의 맞춤형 전동휠체어 적용 시 착석시스템에 대해 비교해 보는 연구이다. 이를 통하여 장애 영역에 따른 맞춤형 전동휠체어 착석시스템의 다른 점을 파악하고, 이러한 결과들을 기초로 하여 휠체어 공적급여 및 처방 시 관련된 문제들을 개선하는데 도움이 되고자 한다. 휠체어 앉기 및 자세는 크게, 자세유지장치, 착석쿠션, 휠체어 자세변환장치 등 세 가지로 구분되어 있다. 국립재활원의 장애인 보조기구 사례관리 시범사업의 2009년 대상자 중 맞춤형 전동휠체어를 처방하고 구축해준 SCI 장애인 5명, CP 장애인 5명을 대상으로 수행한 일련의 과정을 통하여 대상자군에 따라 각 장치의 사용빈도가 차이가 있다는 것을 발견하였다. 자세유지장치는 머리받침대 등 총 10개의 소분류로 구분하였고, 착석쿠션은 공기형 등 총 4개의 소분류로 구분하였다. 휠체어 자세변환장치는 틸팅 등 총 5개의 소분류로 구분하였다. 자세유지장치에서는 대상군에 따라서 각 소분류의 필요 빈도가 달랐으며, 착석쿠션 또한 SCI 장애인은 공기형을 주로 쓰며, CP 장애인은 폼형을 주로 쓰는 것으로 나타났다. 휠체어 자세변형장치로는 SCI 장애인군에서는 다양한 장치를 사용하였으나, CP 장애인군에서는 기본형 전동휠체어 장치를 사용하였다.

• 한국전문물리치료학회지
• /
• 제12권2호
• /
• pp.1-10
• /
• 2005

Pressure ulcers are serious complications of tissue damage that can develop in patients with diminished pain sensation and diminished mobility. Pressure ulcers can result in irreversible tissue damage caused by ischemia resulting from external loading. There are many intrinsic and extrinsic contributors to the problem, including interface tissue pressure, shear, temperature, moisture, hygiene, nutrition, tissue tolerance, sensory and motor dysfunction, disease and infection, posture, and body support systems. The purposes of this study were to investigate the relationship between buttock interface pressure and seating position, wheelchair propulsion speed. Seated-interface pressure was measured using the Force Sensing Array pressure mapping system. Twenty subjects propelled wheelchair handrim on a motor-driven treadmill at different velocities (40, 60, 80 m/min) and seating position used recline ($100^{\circ}$, $110^{\circ}$, $120^{\circ}$) with a wheelchair simulator. Interface pressure consists of average (mean of the pressure sensor values) and maximum pressure (highest individual sensor value). The results of this study were as follows; No significant correlation in maximum/average pressure was found between a static position and a 40 m/min wheelchair propulsion (p>.05). However, a significant increase in maximum/average pressure were identified between conditions of a static position and 60 m/min, and 80 m/min wheelchair propulsion (p<.05). No significant correlation in maximum pressure were found between a $90^{\circ}$ recline (neutral position) and a $100^{\circ}$, $110^{\circ}$, or $120^{\circ}$ recline of the wheelchair back (p>.05). No significant difference in average pressure was found between conditions of a $90^{\circ}$ recline and both a $100^{\circ}$ and $110^{\circ}$ recline of wheelchair back. However, a significant reduction in average pressure was identified between conditions of a $90^{\circ}$ and $120^{\circ}$ recline of wheelchair back (p<.05). This study has shown some interesting results that reclining the seat by $120^{\circ}$ reduced average interface pressure, including the reduction or prevention in edema. And interface pressure was greater during dynamic wheelchair propulsion compared with static seating. Therefore, the optimal seating position and seating system ought to provide postural control and pressure relief. We need an education on optimal seating position and a suitable propulsion speeds for wheelchair users.

• 한국전문물리치료학회지
• /
• 제12권4호
• /
• pp.26-32
• /
• 2005

This study was purposed to provide basic information on the correct application of a wheelchair's backrest angle by investigating the change in cardiopulmonary function according to backrest angle during propulsion. This study examined the effects of the wheelchair's backrest angle on the cardiopulmonary function by varying the angle to $0^{\circ}$, $10^{\circ}$ and $20^{\circ}$ with a propulsion velocity of 60 m/min. The experimental parameters were respiration rate, oxygen consumption rate and oxygen consumption rate/kg which were measured by a portable wireless oxygen consumption meter (COSMED, $K4b^2$). The results of the study were as follows: 1) There were no statistically significant differences in respiration rates due to changes in the wheelchair backrest angle (p>.05). 2) There were statistically significant differences in oxygen consumption rates due to changes in the wheelchair backrest angle (p<.05). 3) There were also statistically significant differences in the oxygen consumption rate/kg due to changes in the wheelchair backrest angle (p<.05). In conclusion, changes in the backrest angle of wheelchairs during propulsion influences oxygen consumption rates and heart rates, while respiration rates are not affected. Therefore, a training program for good seating and posture needs to be provided, and the wheelchair seating system should be equipped with the unadjustable-angle wheelchair to reduce the functional load on the cardiopulmonary system.

• 대한임베디드공학회논문지
• /
• 제6권4호
• /
• pp.209-214
• /
• 2011

This study suggests a Healthcare System for elderly and disabled who have mobility impairment and use a wheelchair for long time. Seating long time in a wheelchair without reducing pressure causes high risk of developing pressure sores. Pressure sores come with great deal of pain and often lead to develop complication. Not only it takes time and effort to treat pressure sores but also increases medical expenses. Therefore, we will develop a device to help to prevent pressure sores by measuring pressure distribution while seating in a wheelchair and wirelessly send information to user device to check pressure distribution in real time. The equipment to measure body pressure is composed of FSR sitting mat which is a sensor measuring part and an user terminal which is a monitoring part. The designed mat is matrix formed FSR sensor to measure pressure. The sensor send measured data to the controller which is connected to the end of the mat, and then the collected data are sent to an user terminal through a bluetooth. Developing a pressure monitoring system will help to prevent those who have mobility impairment to manage pressure sores and furthermore relieve their burden of medical expenses.

• The Journal of Korean Physical Therapy
• /
• 제12권2호
• /
• pp.229-238
• /
• 2000

A properly prescribed wheelchair may be able to normalize tone. decrease pathologic reflex activity, improve postural symmetry, enhance range of movement, maintain and/or improve skin conduit)n. increase comfort and sitting tolerance, decrease fatigue, and improve function of the autonomic nervous system. Whereas a poorly prescribed one can actually exacerbate the problems associated with a disability. Maintained for longer without relief, pressure concentrations may also lead to tissue breakdown. Pressure sores continue to be a major problem for many disabled individuals. Many groups of disabled individuals have a very high incidence of pressure sores, including those individuals with spinal cord injuries. hemiplegia, multiple sclerosis. cancer. and the disabled geriatric population. It is important to understand the factors which predispose an individuals to the development of a pressure sores. Those factors can divided into extrinsic factors, related to the individual's immediate environment and intrinsic factors. related to their medical or physical condition. Pressure sores are generally preventable through sensible pressure management based on an understanding of the causes of pressure sores, risk factors and methods of redistributing pressure.