Method and apparatus for determining bone density and diagnosing

Details Method and apparatus for determining bone density and diagnosing Method and apparatus for determining bone density and diagnosing

1993-03-03

1995-04-04

Pfaffle, K. M.

Surgery

Truss

Pad

12866001, 128739, 128740, 73579, 73584, 36441302, A61B 500, A61B 800

Patent

active

054027810

ABSTRACT:
The integrity (density) of discrete pieces of hard tissue (bones) in a patient may be determined by either one of two methods. In a first method, an impulse of energy is introduced into the hard tissue, such as by striking the patient's hard tissue, and the induced vibration is sensed and analyzed in order to compute the damping factor thereof, the damping factor being directly related to the density thereof. With this method, a transducer is coupled to the hard tissue and its output is amplified by an amplifier before input to a computer which determines the damping factor. In a second method, a continuous energy input is provided to the hard tissue, such as by utilizing a frequency generator coupled to a power amplifier whose output drives a transducer such as a speaker or the like for inducing a continuous vibration in the hard tissue. This continuous vibration is measured with a transducer, having amplified output, and a damping factor is calculated with a computer.

REFERENCES:
patent: 4754763 (1988-07-01), Doemland
patent: 4799498 (1989-01-01), Collier
patent: 4926870 (1990-05-01), Brandenburger
patent: 4941474 (1990-07-01), Pratt, Jr.
patent: 4976267 (1990-12-01), Jeffcott et al.
patent: 5006984 (1991-04-01), Steele
patent: 5143069 (1992-09-01), Kwon et al.
The American Society of Mechanical Engineering paper entitled Structural Damping, presented at a colloquium on structural damping held at the ASME annual meeting, pp. 1-34, Dec. 1959.
Calcified Tissue International article entitled Material Damping for Monitoring of Density and Strength of Bones, by Andrew D. Dimarogonas et al, 1993, 52:244-247.

Affiliated with

Also associated with

Rating

Method and apparatus for determining bone density and diagnosing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for determining bone density and diagnosing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining bone density and diagnosing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2374935