ELENA ANCUTA TULBURE*, ION SANDU,  NECULAI MUNTEANU,  IOAN GABRIEL SANDU, GHEORGHE - VIRGIL ATODIRESEI, NORINA CONSUELA FORNA 3D Modelling of Pressure Exerted by Polymeric Knittings  with Increased Elasticity on Cylindrical Surfaces

ELENA ANCUTA TULBURE*, ION SANDU, NECULAI MUNTEANU, IOAN GABRIEL SANDU, GHEORGHE - VIRGIL ATODIRESEI, NORINA CONSUELA FORNA 3D Modelling of Pressure Exerted by Polymeric Knittings with Increased Elasticity on Cylindrical Surfaces

Abstract:
The elastic contention is the most efficient and used method to solve chronic venous insufficiency, being used in some countries by 71% of patients. In functional design of knitted orthoses with increased elasticity which exert a controlled pressure on a cylindrical surface of human body, used in the treatment of venous insufficiency, the model proposed allows optimal assessment of pressure values in knitting - anthropometric sizes - applied pressure ratio. Therefore starting from mechanical behaviour described by stress-strain diagrams of knittings from polyurethane yarns and using the pressure formula based on the model proposed we can assess accurately the applied pressure values for different anthropometric circumferences. Based on the model it was determined the calculation ratio of pressure exerted by the knitting versions for the cylindrical model embracement of different parts of human body. The choosing of orthoses is a difficult problem, few patients can find serial orthoses which fit the patients’ limbs configuration. Hence, the model can be used easily for designing and manufacturing on demand of the orthoses with controlled pressure potential. Keywords: graduated compression stockings, pressure modelling, stress-strain diagrams, chronic venous insufficiency, knitted fabrics, polyurethane yarns

Issue: 2013 Volume 50, Issue 4

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