Compression Sleeves Design Based on Laplace Laws

Zhao, Lihuan; Li, Xiaohuan; Yu, Jie; Li, Cuiyu; Li, Guangxu

doi:10.15406/jteft.2017.02.00050

Cited by 5 publications

(11 citation statements)

References 13 publications

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“…Recently Lihuan Zhao et al 13 have made an excellent review of different formulae proposed by many researchers.…”

Section: Hui and Ngmentioning

confidence: 99%

Prediction of Pressure due to Elastic Fabric Tube Following Energy Principle

Chattopadhyay¹,

Bera²

2017

JTEFT

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Elastic knitted fabric tubes are used as pressure garments and pressure bandages in compression therapy to mitigate many physical ailments of human beings. Laplace law has been extensively used for prediction of pressure at the interface of human body and elastic tube by many. However, it has been stated to be inadequate in some cases. Human body is compressible because of presence of soft tissues. This characteristic has not been taken into account. In the present paper a mathematical model based on energy principle has been proposed to predict pressure by a fabric tube fitted on foam covered rigid cylinder. The model equation has shown better prediction of the interfacial pressure than that one expects based on Laplace's law.

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“…Recently Lihuan Zhao et al 13 have made an excellent review of different formulae proposed by many researchers.…”

Section: Hui and Ngmentioning

confidence: 99%

Prediction of Pressure due to Elastic Fabric Tube Following Energy Principle

Chattopadhyay¹,

Bera²

2017

JTEFT

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“…Stretch fabrics find particular applications in the design of active sport clothing such as swimsuits and athletic clothing. As the human skin can be extensible from 20 to 200% due to physical movement, the compression materials can be developed that can exert the exact required pressure on the body utilizing the elasticity of knitted fabric properties as material, clothing design and the influence of clothing pressure on the body [6].…”

Section: Introduction *mentioning

confidence: 99%

Determination of the Pressure of Knitted Abdominal Bandage of Women Legging Pants Using Laplace Laws

2022

JST: ETSD

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Compression garments are used for medical therapies and sports products such as bandages, socks, workout clothes and so on, with different degrees of compression. The pressure exerted on the body by compression products must be measured and calculated during the design. This paper investigated a method to determine the required pressure in the design of legging pants with a given abdominal pressure by using knitted CVC fabric (60% Cotton and 40% Polyester) with all stitches plated with 100% Spandex yarn. The pressure was calculated based on Laplace laws and was checked by using the designed FSR402 force sensor. Eight volunteers have participated in the trial. Calculating the volunteer's abdominal pressure in wearing legging pants using Laplace's formula was resulted in a range of 5.0 mmHg to 5.7 mmHg when the fabric extension was 20% and between 7.1 mmHg and 8.0 mmHg with a fabric extension of 35%. In that case, the actual pressure measured by the force sensor FSR402 was from 24.3 mmHg to 27.6 mmHg at 20% fabric extension and from 34 mmHg to 39 mmHg at 35% extension. Research shows that using the Laplace equation requires correction to fit a particular design with different circumferences.

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“…where P is the cylindrical surface pressure, T is the fabric tension, and R is the radius of curvature of the cylindrical surface (Zhao et al, 2017). Thus, the interface pressure increases when the radius of curvature under the fabric decreases and vice versa (Cheng et al, 1984; Macintyre, 2007).…”

Section: Introductionmentioning

confidence: 99%

Relationship Between Interface Pressures and Pneumatic Cuff Inflation Pressure at Different Assessment Sites of the Lower Limb to Aid Soft Exoskeleton Design

et al. 2020

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Objective The aim was to develop a means of predicting interface pressure from cuff inflation pressure during circumferential compression at the lower limb, in order to inform the design of soft exoskeletons. Background Excessive mechanical loading of tissues can cause discomfort and soft tissue injury. Most ergonomic studies on exoskeletons are of interface pressure, but soft exoskeletons apply circumferential pressures similar to tourniquet cuffs by way of cuff inflation pressure. This study details the relationship between interface and cuff inflation pressures for pneumatic tourniquet cuffs. Method Pneumatic cuffs of different widths were inflated to target pressures on (A) a rigid cylinder, (B) the dominant thigh and calf, and (C) knee of healthy participants standing still. Interface pressures were measured under the cuffs using a pressure-sensing mat. Average interface pressures were then compared to cuff inflation pressures. The influence of cuff width, cuff inflation pressure, and participants’ anthropometric data on pressure transmission was assessed. Results A strong linear relationship between cuff inflation pressures and interface pressures was observed. Interface pressures were generally higher than cuff inflation pressures. The efficiency of pressure transmission to the lower limb depended on assessment site, adipose tissue thickness, cuff size, cuff inflation pressure, and possibly limb circumference. Regression equations were developed to predict interface pressures at the thigh, calf, and knee. Conclusion Interface pressures under pneumatic cuffs are influenced by the cuff size, cuff inflation pressure, and tissue compressibility. Predicted interface pressure from cuff inflation pressure and vice versa can be used to aid the design of soft exoskeletons.

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Compression Sleeves Design Based on Laplace Laws

Cited by 5 publications

References 13 publications

Prediction of Pressure due to Elastic Fabric Tube Following Energy Principle

Prediction of Pressure due to Elastic Fabric Tube Following Energy Principle

Determination of the Pressure of Knitted Abdominal Bandage of Women Legging Pants Using Laplace Laws

Relationship Between Interface Pressures and Pneumatic Cuff Inflation Pressure at Different Assessment Sites of the Lower Limb to Aid Soft Exoskeleton Design

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