Non-invasive determination of mechanical characteristics in the

Details Non-invasive determination of mechanical characteristics in the Non-invasive determination of mechanical characteristics in the

1985-02-19

1987-03-03

Cohen, Lee S.

Surgery

Truss

Pad

128649, 128677, 73575, 364508, A61B 510

Patent

active

046467548

ABSTRACT:
A non-invasive system and method for inducing vibrations in a selected element of the human body and detecting the nature of responses for determining mechanical characteristics of the element are provided. The method comprises the steps of: inducing multiple-frequency vibrations, including below 20 KHz, in a selected element of the body by use of a driver; determining parameters of the vibration exerted on the body by the driver; sensing variations of a dimension of the element of the body over time, including in response to the driver; correlating the variations with frequency components of operation of the driver below 20 KHz to determine corresponding frequency components of the variations; resolving the frequency components into components of vibration mode shape; and determining the mechanical characteristics of the element on the basis of the parameters of vibration exerted by the driver and of the components of vibration mode shape.

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Thompson, G. A. et al, "In Vivo Determination of Mechanical Properties of the Human Ulna", MBE, vol. 14, No. 3, pp. 253-262, May 1976.

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