Surgery – Truss – Pad
Patent
1987-08-11
1991-05-07
Cannon, Alan
Surgery
Truss
Pad
128741, A61B 510
Patent
active
050128205
DESCRIPTION:
BRIEF SUMMARY
The invention is directed to a device for the determination of the change in the mechanical magnitudes during muscular contraction and for the correlation with the change in the electrical magnitudes of nerve and muscle during muscular contraction, preferably in the living human organism In various scientific fields, particularly in medicine, biology and sports science, it is necessary, or at least useful, during investigation of the skeletal musculature to determine the change in the mechanical magnitudes of muscles and in the electrical magnitudes of muscles and the nerves assigned to them and to determine their correlation. For example, this is necessary for the observation of the course of rehabilitation programs and training programs in sports of the development of muscular diseases (e.g. muscular dystrophies). These determinations are likewise advisable for determining the dosage of medicines acting on the muscles or in anesthesia. In addition, it is relevant to medical and biological training in the fields of neurology, myomechanics, reflexes and electromyelography to obtain the most accurate possible values in the aforementioned sense with respect to the musculature during muscular contraction.
Specifically, in the field of medicine and in medical training, the determination of the change in the mechanical magnitudes and the determination of the reciprocal action with the change in the electrical magnitudes, which determinations were necessary per se, were not possible in the living organism, particularly the living human organism. Previously, only biopsies of the musculature of killed animals were usable, wherein the results of measurements with such test subjects were only to be related to the human organism by way of inference or by way of a corresponding utilization.
Moreover, various devices and methods for muscular testing and for the determination of movement processes or muscular strength in terms of magnitudes have become known. However, these methods have very considerable disadvantages. In particular, only some of the critical parameters for the required determinations have been determined, although scientifically correct results are to be obtained only by means of the determination and correlation of all parameters (total nerve potential, nerve conductive speed, total muscular potential, muscular vibrations, muscular strength, muscular path, and the various latency periods).
In addition, the known devices and methods already have the considerable disadvantage that they effect an insufficient fixing of the areas of the body, particularly the limbs, with respect to which the muscular contractions are to be investigated. This causes a falsification of the magnitudes which are determined subsequently, for example, by means of an incomplete detection of a part of the contraction and/or possibilities of deviation of the investigated limbs relative to the measuring device.
Finally, the known devices and methods have the disadvantages that the initial magnitudes and initial conditions for the investigations, particularly with respect to electric current stimulus intensity, intensity of the impulse during the use of a reflex hammer, and magnitude of the counterforce exerted on the respective muscle, cannot be established in such a way as to be unchangeable for the respective test or test series, and there is an additional source of error in the form of the inherent friction of the testing and measuring device. The proband the (i.e. individual actually being investigated) can also not be individually fitted in the testing device or measuring device in the known devices and methods, although this is indispensable in view of the existing differences in the bodily frame of individual persons.
The invention has the object of providing a device of the type mentioned in the beginning in which the change in the mechanical magnitudes, accompanied by the correlation with the change in the electrical magnitudes of the nerve and muscle during muscular contraction, can be reliably determined while eliminatin
REFERENCES:
patent: 4236528 (1980-12-01), Stanec et al.
patent: 4571750 (1986-02-01), Barry
patent: 4668581 (1987-08-01), Moss
patent: 4724842 (1988-02-01), Charters
Cannon Alan
Shay Randy
Striker Michael J.
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