Development of flexible prostheses for the pressure measurement of medical compression stockings based on 3D printing technology
Compression stockings establish a controlled pressure gradient from the ankle to the thigh,characterized by higher pressure at the ankle and lower pressure at the thigh.These stockings are widely utilized in medical,healthcare,sports,and body shaping contexts.The pressure value of compression stockings significantly impacts their application.To determine the pressure value,two primary methods are utilized:indirect and direct measurements.Indirect measurements depend on tension tests,and rely on Laplace's Law to determine the pressure exerted by the fabric on the interface by gauging the force value.However,these mathematical models only predict the average interface pressure of the pressure area,lacking detailed local pressure data.Direct measurements provide precise data on the local interface pressures exerted by compression stockings.Yet,various devices affect the accuracy of these measurements,including wooden leg mannequins and regular-shaped tubes.Currently,scholars are focusing on human legs to obtain precise compression stocking pressure values.Nonetheless,such measurements face limitations.Subjects must remain standing and stationary,as lower-limb trembling can introduce experimental data instability.Additionally,while devices simulating the human leg are used in measurements,rigid devices may not provide accurate pressure values compared to actual human legs.Soft mannequins are gradually replacing rigid ones in this context.The leg mannequin was utilized to measure the stocking at four distinct locations across six cross-sectional planes.By comparing the contact pressure data obtained from the fabricated leg mannequin,the standard-sized wooden leg mannequin,and human legs,it was found that the the pattern observed in the fabricated mannequin aligned closely with that of human legs.Notably,the wooden mannequin exerted a significantly higher level of contact pressure compared to human legs.Furthermore,the local contact pressure data from the fabricated leg mannequin demonstrated strong concurrence with that of human legs.The Spearman rank correlation confirmed a notable correlation between the contact pressure data from the fabricated mannequin and human legs.This suggests that the fabricated leg mannequin offers consistent performance with respect to the human leg,enabling it to serve as a suitable replacement for standard tests involving the standard-sized wooden leg mannequin.The novel leg mannequin offers precise pressure measurements for compression stocking standard tests and serves as helpful reference.Additionally,as compression stocking standards vary across different countries,this study contributes to a global application where the standardized fabricated leg mannequin can serve as reliable reference for standard contact pressure measurements.
medical compression stockingscontact pressurewooden leg mannequinflexible prosthesisreal human bodytest standards
万方数据
维普
