Development of a device to determine the stiffness of elastic garments and bandages

Harada, Masafumi; Niimi, Kiyoaki; Miyazaki, Keiko; Iwata, Hirohide; Sugimoto, Ikuo; Ishibashi, Hiroyuki; Ota, Takashi; Kominami, Yukiya

doi:10.1258/phleb.2010.010041

Cited by 18 publications

(18 citation statements)

References 15 publications

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“…5) Mannequin leg to assess stiffness Hirai and coworkers have developed a leg model whose circumference can be extended by one centimetre. 6) The increase of the pressure under a compression device on a specific leg point, e.g. at B1 corresponds to the stiffness of the material.…”

Section: Measurement Of Interface Pressure and Stiffness In Vivomentioning

confidence: 99%

Compression Therapy: Clinical and Experimental Evidence

Partsch

2012

Annals of Vascular Diseases

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Aim: A review is given on the different tools of compression therapy and their mode of action. Methods: Interface pressure and stiffness of compression devices, alone or in combination can be measured in vivo. Hemodynamic effects have been demonstrated by measuring venous volume and flow velocity using MRI, Duplex and radioisotopes, venous reflux and venous pumping function using plethysmography and phlebodynamometry. Oedema reduction can be measured by limb volumetry. Results: Compression stockings exerting a pressure of ~20 mmHg on the distal leg are able to increase venous blood flow velocity in the supine position and to prevent leg swelling after prolonged sitting and standing. In the upright position, an interface pressure of more than 50 mmHg is needed for intermittent occlusion of incompetent veins and for a reduction of ambulatory venous hypertension during walking. Such high intermittent interface pressure peaks exerting a "massaging effect" may rather be achieved by short stretch multilayer bandages than by elastic stockings. Conclusion: Compression is a cornerstone in the management of venous and lymphatic insufficiency. However, this treatment modality is still underestimated and deserves better understanding and improved educational programs, both for patients and medical staff.

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Section: Measurement Of Interface Pressure and Stiffness In Vivomentioning

confidence: 99%

Compression Therapy: Clinical and Experimental Evidence

Partsch

2012

Annals of Vascular Diseases

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“…13 The test results reveal that the pressures on the cylinders with the radius of 5 cm, are close to the expected range of pressures when these systems are used in clinical practice. However, further unpublished research of one of the group members revealed that if the method of enlargement described by Hirai et al 29,31 is used on cylinders, a diameter of 4 cm is closer to the expected range. 34 Based on these findings, the recommendation of the ICC working group is that for in vitro testing of compression bandages and bandage systems, cylinders should be used with a radius of 4 cm (circumference 25.1 cm).…”

Section: Radius/circumference Of the Cylindermentioning

confidence: 93%

“…The one leg model which has an application that is described as automatically (device 7), uses a manual winder to turn the fixed leg. 29 Although it is possible with this device to apply bandages with e.g. a 50% overlap, it is difficult to have the forces distributed evenly because of the irregularly shaped leg.…”

Section: Application Methodsmentioning

confidence: 99%

In vitro measurements of compression bandages and bandage systems: a review of existing methods and recommendations for improvement

Schuren

2014

Veins and Lymphatics

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In this article an overview is presented of identified devices that are or can be used for in vitro pressure and stiffness measurements of compression bandages and bandage systems. The performance of these devices has been evaluated on several parameters as well as the clinical relevance of the findings. In addition, recommendations for improvement and standardization of future measurements from the International Compression Club (ICC) working group compression bandages are presented.

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“…To determine the stiffness of the cloth studied, after their closed application without extra tension to the mannequin, the interface pressure under each cloth was continuously recorded by a pressure transducer (air-pack type analyser, Model AMI-3037, AMI Co., Tokyo, Japan), as described in a previous study. 13 The pack was placed on the medial area at level B1 of the leg mannequin, at the transition of the medial gastrocnemius muscle into the Achilles tendon in human legs, 11 and pressure recording while the gaiters or elastic stockings were applied was carried out continuously at intervals of 100 ms. During measurements, the circumference of the leg mannequin was increased to 1 cm by pushing the lever. An increase in the interface pressure was recorded as the stiffness (mmHg), as defined by the European Committee for Standardization (CEN).…”

Section: Methodsmentioning

confidence: 99%