Evaluation of an Active Seating System for Pressure Relief
作者:
TerryK. K. Koo,
ArthurF. T. Mak,
Y.L. Lee,
期刊:
Assistive Technology
(Taylor Available online 1995)
卷期:
Volume 7,
issue 2
页码: 119-128
ISSN:1040-0435
年代: 1995
DOI:10.1080/10400435.1995.10132260
出版商: Taylor & Francis Group
关键词: Wheelchair seating;Active and passive cushions;Pressure sore
数据来源: Taylor
摘要:
In the first part of this study, the inflation-pressure and interface-pressure profiles of an active cushion system, the Talley active air bellows cushion, were examined continuously for one complete working cycle using the dynamic pressure monitor. The relationship between the inflation pressure and the interface pressure was explored. A well-defined relationship was found in the areas directly over the air bellows. In the second part of this study, the pressure-relieving characteristics of the active cushion were assessed quantitatively and compared to two types of passive cushions—the Roho high-profile air floatation cushion and the polyurethane (PU) foam cushion. Eight non-disabled subjects were positioned on the active cushion at two inflation-pressure levels—30 mmHg and 60 mmHg, or on the Roho or the PU foam cushions. Interface pressures were recorded using the Oxford pressure monitor. For the active cushion it was shown that the higher the inflation pressure was, the better the pressure-relieving characteristics seemed to be. In general, the pressure-relieving characteristics of the active cushion were not as good as those of the passive cushions being tested. The active cushion could alter the pressures over the ischial tuberosities cyclically but the amount of pressure alternation depended on the relative position of the ischial tuberosities and the air bellows.
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