Abstract
Preventing bedsore is one of the vital problem in nursing care. Various medical devices have been devised to solve this problem.
In this study we have exprimented on M・I model mattress designed to equalize body pressure on the skin and reduce local pressure concentrations.
(M-I model mattress)
This model is constructed in the new form which is bilined up each 20 pieces of pillar-shaped Urethane formation (10×10×45cm). And we can make the optional space on this mattress by pulling out few pieces of these of biside, where is pinched high risk position of bed sore, example sacural.
(Test condition)
1. Materials (Urethane mattress)
a. Type.1 (basic model) 10/10/45cm (specific gravity 15.5kg)
b. Type.2 (double size model) 20/20/45cm (specific gravity 15.5kg＋12.0kg)
c. Type.3 (double size model) 20/20/45cm (specific gravity 15.5kg＋13.0kg)
(Test item)
1. Distribution of body pressure in the hip megion
2. Temperature and humidity changes on the sacral portion (60minuteslying)
3. Analysis of lying posture by picture.
(Test results)
Type.1, under pulling out about 16cm wide, was effective in preventing lasting ischemia.
Effective width of pulling out in Type.2, 3 was shorter than Type.1
Lying posture in Type.2, 3 was better than Type.1.
Type.3, under pulling out about 8cm wide, was the most effective in preventing bedsores in all results.
The expriments on M-I model mattress have shown that they are effective in preventing lasting ischemia as they equalize body pressure concentrations by making a open space under the spot where the incidence of bedsore is high.
In the future, this mattress should be studied from the view point of lying posture, temperature and humidity.
