Surgery – Truss – Pad
Patent
1988-03-16
1989-08-22
Hindenburg, Max
Surgery
Truss
Pad
33512, A61B 510
Patent
active
048586218
ABSTRACT:
An improved foot pressure measurement system wherein pressure measurements are obtained from the variation of light output from an illuminated glass or transparent plate. A reflective material on the top surface of the plate causes an increase in light intensity escaping from the plate when pressure is applied to the reflective material. The accuracy and resolution of the pressure measurements are improved by obtaining a reference measurement of the background light intensity and distribution before pressure is applied and subsequently subtracting this background light from the light patterns produced when pressure is applied. The reflectance characteristics of the system are improved by using a photographic paper as the reflective material.
REFERENCES:
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R. P. Betts et al., "Critical Light Reflection at a Plastic/Glass Interface and Its Application to Foot Pressure Measurements," 4 Journal of Medical Engineering & Technology 136, May 1980.
R. P. Betts et al., "A Device for Measuring Planter Pressures Under the Sole of the Foot," 7 Engineering in Medicine 223 (1978).
C. I. Franks et al., "Microprocessor-based Image Processing System for Dynamic Foot Pressure Studies," Medical and Biological Engineering & Computing, pp. 566-572, Sep. 1983.
R. P. Betts, "Static and Dynamic Foot Pressure Measurements in Clinical Orthopaedics," Medical and Biological Engineering & Computing 674 (Sep. 1980).
R. P. Betts, "Static and Dynamic Foot Pressure Measurements in the Management of the Insensitive Foot," Proceedings of the International Conference on Biomedics and Clinical Kinealogy of Head and Foot, I. I. T., Madras, India 101 (Dec. 16-18, 1985.
R. P. Betts et al., "A Simple Grey-Scale to Colour Converter," 3 Journal of Medical Engineering and Technology 31 (Jan. 1979).
M. Lord, "Foot Pressure Measurement: A Review of Methodology," 3 Journal of Biomedical Engineering 91 (Apr. 1981).
Biokinetics, Inc.
Hanley John C.
Hindenburg Max
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