J. Technology and Education, Vol.28, No.1, pp.43-48 (2021)

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Basic examination of bedsore suppression using mucin

 

Takakuni TANAKACNatsumi YAJIMACHiroshi SAKAICTomoaki KOUYA

Hisako OOKACTakashi KUWAHARA and Yuki NASU

National Institute of Technology, Oyama College

(771 Nakakuki, Oyama City, Tochigi Prefecture 323-0806, JAPAN)

National Institute of Technology, Gunma College

(580 Toriba, Maebashi, Gunma, 371-8530 Japan)

Nagaoka University of Technology, Department of Bioengineering

(1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, JAPAN)

 

(Received May 12, 2021; Accepted June 14, 2021)

 

A pressure ulcer (bedsore) is damage to the skin and underlying tissue, primarily caused by prolonged pressure or friction on the skin. In particular, it has been pointed out that elderly people who tend to have decreased skin elasticity are prone to have pressure ulcers. This is an urgent issue in Japanfs aging society; to prevent pressure ulcers, it is considered important to reduce the friction between the skin and sleepwear, maintain environmental moisture, and prevent bacterial infection in the wound. In this study, we focused on mucin, which is known as a glycoprotein, when investigating the effect of friction between clothes and skin. The skin and sleepwear environment was represented by artificial leather and cloth, and a friction test was performed using a surface property tester. The load (vertical force) applied to the shaft of the surface texture–measuring machine was set to 200 [g], the reciprocating speed was 3000 [mm/min], and the jig moving distance was 20 [mm]. One mL of water or solutions of pig stomach mucin with different concentrations was dropped on the cloth pieces, and the same measurement was performed. So far, we have improved the jig of the surface tester, measured and analyzed the static/dynamic friction coefficient to reproduce the pressure ulcer environment, and confirmed mucin's ability to reduce friction.

Key words: Mucin / friction / Pressure ulcer / artificial leather

 

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