Document Detail

Pressure prediction model for compression garment design.
MedLine Citation:
PMID:  20628306     Owner:  NLM     Status:  MEDLINE    
Based on the application of Laplace's law to compression garments, an equation for predicting garment pressure, incorporating the body circumference, the cross-sectional area of fabric, applied strain (as a function of reduction factor), and its corresponding Young's modulus, is developed. Design procedures are presented to predict garment pressure using the aforementioned parameters for clinical applications. Compression garments have been widely used in treating burning scars. Fabricating a compression garment with a required pressure is important in the healing process. A systematic and scientific design method can enable the occupational therapist and compression garments' manufacturer to custom-make a compression garment with a specific pressure. The objectives of this study are 1) to develop a pressure prediction model incorporating different design factors to estimate the pressure exerted by the compression garments before fabrication; and 2) to propose more design procedures in clinical applications. Three kinds of fabrics cut at different bias angles were tested under uniaxial tension, as were samples made in a double-layered structure. Sets of nonlinear force-extension data were obtained for calculating the predicted pressure. Using the value at 0° bias angle as reference, the Young's modulus can vary by as much as 29% for fabric type P11117, 43% for fabric type PN2170, and even 360% for fabric type AP85120 at a reduction factor of 20%. When comparing the predicted pressure calculated from the single-layered and double-layered fabrics, the double-layered construction provides a larger range of target pressure at a particular strain. The anisotropic and nonlinear behaviors of the fabrics have thus been determined. Compression garments can be methodically designed by the proposed analytical pressure prediction model.
W Y Leung; D W Yuen; Sun Pui Ng; S Q Shi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of burn care & research : official publication of the American Burn Association     Volume:  31     ISSN:  1559-0488     ISO Abbreviation:  J Burn Care Res     Publication Date:    2010 Sep-Oct
Date Detail:
Created Date:  2010-09-09     Completed Date:  2011-01-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101262774     Medline TA:  J Burn Care Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  716-27     Citation Subset:  IM    
Department of Mechanical Engineering and †Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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MeSH Terms
Burns / complications*
Cicatrix, Hypertrophic / etiology*,  therapy*
Equipment Design
Materials Testing
Models, Biological
Stress, Mechanical

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