A Novel Model of Human Skin Pressure Ulcers in Mice

Abstract At present, skin pressure ulcers are a common problem in the care of bedridden patients. Solving this problem usually involves turning the patient over regularly, which requires a lot of manpower and material resources. This paper designs a human body pressure recognition model, which can solve the problem of human pressure ulcers very well in combination with intelligent nursing beds. This paper collects the bone data of the human body by using the Kinect sensor, and then processes the collected data. The film pressure sensor is used to collect the pressure information of the human body, and the pressure information is matched with the bone data of the human body, so as to obtain the pressure of the corresponding part of the human body, and judge the current posture of the human body through the pressure information. When the pressure of the compression part of the human body reaches the threshold, the intelligent nursing bed automatically turns over to reduce the pressure of the compression part of the human body.

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Effects of acute and chronic arsenic exposure of human-derived keratinocytes in an In Vitro human skin equivalent system: a novel model of human arsenicism

Toxicology in Vitro ◽

10.1016/s0887-2333(97)00006-4 ◽

1997 ◽

Vol 11 (1-2) ◽

pp. 89-98 ◽

Cited By ~ 15

Author(s):

W.T. Klimecki ◽

A.H. Borchers ◽

R.E. Egbert ◽

R.B. Nagle ◽

D.E. Carter ◽

...

Keyword(s):

Human Skin ◽

Arsenic Exposure ◽

Skin Equivalent ◽

Equivalent System ◽

System A ◽

Chronic Arsenic Exposure ◽

Novel Model ◽

Human Skin Equivalent

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ANALYSIS OF VISCOELASTICITY OF HUMAN SKIN FOR PREVENTION OF PRESSURE ULCERS

Journal of Mechanics in Medicine and Biology ◽

10.1142/s0219519408002383 ◽

2008 ◽

Vol 08 (01) ◽

pp. 33-43 ◽

Cited By ~ 6

Author(s):

YOKO AKIYAMA ◽

YOSHIRO YAMAMOTO ◽

YUSUKE DOI ◽

YOSHINOBU IZUMI ◽

SHIGEHIRO NISHIJIMA ◽

...

Keyword(s):

Finite Element Method ◽

Elastic Modulus ◽

Resonance Frequency ◽

Human Skin ◽

Strain Distribution ◽

Pressure Ulcers ◽

Subcutaneous Tissue ◽

Frequency Change ◽

The Finite Element Method ◽

The Difference

Change in viscoelasticity of human skin with aging is evaluated by measurement of deformation under suction and of resonance frequency change under probe indentation. The elastic modulus of human skin measured by suction increases with aging, but that measured by resonance frequency change decreases; the difference is considered to be caused by the difference in measured depth region of the human skin. In order to clarify the depth region which can be measured by each technique, strain distribution is calculated by the finite element method (FEM). The results show that the epidermis is mainly deformed by the skin suction method, whereas the dermis and subcutaneous tissue are mainly deformed by measurement of resonance frequency change. For confirmation of FEM results, skin models made of silicone rubber are prepared and measured by the two methods. Viscoelasticity in the depth region from the surface to several hundred micrometers of the material is obtained by the skin suction method, while that in the region from several millimeters to several centimeters is obtained by the resonance frequency change. Based on these results, it is observed that the elastic modulus of epidermis tends to increase with aging while that of dermis and subcutaneous tissue tends to decrease, thus causing pressure ulcers.

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