RU2264164C2 - Device for vibration resonance diagnosis and determination of extent of motion of clavicle - Google Patents

Abstract

FIELD: diagnosis and may be applicable for functional examinations in traumatology, orthopedics, surgery, neurology, sport medicine, in the process of rehabilitation, for occupational selection, examinations in labour physiology, examinations of labour capacity, etc.

SUBSTANCE: the device has a vibrator, facility for displacement of the vibrator in the vertical plane, micrometer connected to the vibrator armature, vibration guide for a tight contact with the clavicle, transducer in the form of an receiver-accelerator. The device provides for registering the vibrosignal from the clavicle at various positions of the upper extremity, motion of the clavicle in the frontal plane at breathing and various its functional opportunities, as well as provides for an unbased estimation of the functional condition of the ligamentous apparatus, aerominal-clavicular joint, coracoclavicular ligament, sterno-clavicular joint, mechanical strength of the clavicle.

EFFECT: enhanced efficiency of the recovery process and reduced terns of treatment of injured clavicle.

3 dwg, 2 ex

Description

The invention relates to medicine, namely to devices for diagnostics, and can be used for functional research in traumatology, orthopedics, surgery, sports medicine, in the process of rehabilitation, for occupational selection, research in the physiology of work, sports, examinations of working capacity, etc.

According to the literature, a small number of devices are known for studying the vibrational resonance characteristics of various localizations (E. Blestkin, V. I. Shapin, L.B. Maslov, S.E. Lvov, S.V. Vikhrev. Device for modeling vibrational resonance characteristics in the study of transosseous osteosynthesis of the tibia in the experiment. Certificate for Utility Model, RU 19361 U1 dated 08.28.01).

A known method of studying the biomechanical properties of the lower extremities by the method of vibration tests (Aruin A.S., Zatsiorsky V.M., Pankov G.Ya., Raitsil L.M. Study of the biomechanical properties of the lower extremities by the method of vibration tests. Abstracts of the second All-Union Conference on Problems Biomechanics, Volume 4. Medical Biomechanics. - Riga, 1979. - P.36-37).

A device for vibrodiagnostics is known (Lvov S.E., Shapin V.I., Schavelov V.L., Nozdrin M.A., Russkikh S.V., Kolodina I.G. Device for diagnosing the functional state of the triceps muscle of the leg. Patent for the invention of the Russian Federation RU 2123803 C1 dated 12/27/98). The device consists of a platform on which the vibrator is fixedly mounted, tires for fixing the limbs in the mid-physiological position, a dynamometer sensor, a sensor in the form of a receiver-accelerator, a sound oscillation generator, a rotary mechanism (see Figure 1).

The latter device is the closest in technical characteristics to the proposed one, since it includes a vibrator that allows you to apply a vibrational effect to the object of study, and a sensor for recording a vibration signal.

The disadvantage of this device is the inability to use a vibrating conduit for applying a vibration effect to the bone surface of a complex configuration; measuring the amplitude of movement of the investigated object.

The technical result of the proposed device is to expand the functionality of vibration diagnostics, to study the vibrational characteristics of the clavicle, to increase and simplify the accuracy of recording and processing the results, recording the movement of the clavicle in the frontal plane during breathing and movement of the upper limb.

The essential features of the invention characterizing it are:

1. Vibrating conductor providing tight contact of the vibrator with the surface of the clavicle, having a complex configuration. The design of the vibrator is a hallmark of the device from the prototype;

2. The micrometer, the vibrator armature and the vibroconductor are connected in a single circuit, which allows you to transmit and measure the movement of the clavicle and adjust the force of pressing the vibroguide to it. The presence of a micrometer, its connection in a single circuit with an anchor and a vibroconductor, the ability to measure the movement of the clavicle and regulate the force of pressing the vibroguide to it are the hallmarks of the device from the prototype;

3. An elevator with a vibrator mounted on it, moving in a vertical plane. The presence of the elevator and the ability to move the vibrator in a vertical plane are the hallmarks of the device from the prototype.

Figure 1 presents a device for vibrational resonance diagnostics and determine the range of motion of the clavicle. The device consists of a vibrator (1), the design of which includes an anchor (2), moving in a vertical plane. The vibrator (1) is fixedly mounted on the elevator (3). The micrometer (8) is fixedly mounted on the elevator (3) by the rod of the micrometer (10) and is connected to the anchor (2) by the armature bar (9), which allows you to transfer the movement of the armature (2) to the micrometer (8). The device is mounted on a vertical surface (14) using a support (4), the elevator (3) is movably mounted on a support (4) and can be moved in a vertical plane. The elevator (3) is connected to the counterweight (7) by a cable (5) through the block (6). The excitation of mechanical vibrations is carried out perpendicular to the axis of the clavicle by a vibrator (1) by means of an armature (2) oscillating in a magnetic field on which a rod (12) is attached, equipped with a vibroconductor (11). On the vibrator (1) there are blocks (13) for connecting the device control system.

Figure 2 presents a block diagram of a control system for a device for vibrational resonance diagnostics and determining the range of motion of the clavicle. The frequency and amplitude of the forced oscillations are changed by a computer and a power amplifier. Oscillations are measured by a sensor fixed to the acromial end of the clavicle by means of the VELKRO tape. The parameters of the oscillatory process, including the resonant state of the clavicle, are recorded after preliminary amplification of the signal amplifier, a computer. General control and automation of vibration tests, statistical analysis, calculation of dissipative characteristics and the decision made on the results of the tests are assigned to a personal computer.

Figure 3 presents the device of the vibroguide, consisting of a vertical rod (11A) and fixed to it using a swivel (11b) of a rectangular metal platform (11c).

The device is used as follows. The examinee sits on a chair under the device. The elevator (3) with the vibrator (1) fixed on it is lowered until the vibroguide (11) makes contact with the middle third of the clavicle and the armature (2) moves up 2 mm according to the micrometer (8), which ensures the same experimental conditions for everyone. In the projection of the acromial end of the clavicle, the sensor is fixed with a VELCRO tape. The study can be carried out at any position of the upper limb.

We give an example of using the proposed device to diagnose the functional state of the clavicle.

1. Surveyed R., 24 years old. Almost healthy. The examinee sits on a chair so that the shoulder blades fit snugly on the back of the chair, his right hand hanging freely along the body. The elevator with the vibrator fixed on it is lowered until the vibrocontact comes into contact with the middle third of the clavicle and the reading of the micrometer is 2 mm. With calm breathing of the patient, the deviation of the micrometer needle is recorded, the maximum and minimum values are recorded, the difference is the range of motion. Then, according to a similar technique, the readings of the displacement sensor are recorded during deep inhalation, during exhalation, when raising and lowering the shoulder girdle, during flexion, extension, shoulder abduction in the shoulder joint. After that, the sensor is fixed in the projection of the acromial end of the clavicle with the VELCRO tape and the vibrator is turned on with the help of the device control system, the anchor begins to oscillate in the magnetic field. The resonance curve is recorded in the position of the freely hanging upper limb. Then the vibration effect is carried out in the position of flexion of the upper limb in the shoulder joint at an angle of 90 °, extension 60 °, assignment 90 °.

The study revealed that the amplitude-frequency characteristics and volume of movement of the clavicle are independent of the position of the upper limb and have a constant value.

We give an example of the use of the proposed device for the diagnosis of dislocation of the acromial end of the clavicle.

2. Patient B., 33 years old. Diagnosis: Closed fresh supra-acromial dislocation of the right clavicle. The examination methodology is similar to the methodology shown in example 1.

Studies have shown that the amplitude-frequency characteristics and volume of movement of the clavicle in case of damage to the clavicular-acromial joint (CAS) differ from the healthy one, which is a consequence of a violation of the anatomical integrity of the clavicular-coracoid and clavicular-acromial ligaments.

Statistical analysis of the data of examination of persons without clavicle pathology showed that the position of the upper limb in the shoulder joint does not affect the frequency characteristics of the clavicle, which significantly change with dislocations of the acromial end of the clavicle.

The proposed "Device for vibrational resonance diagnostics and determination of the range of motion of the clavicle" provides the following features:

1. registration and analysis of the range of motion of the clavicle during breathing and various positions of the upper limb, as well as in pathology of the upper limb;

2. the device provides the ability to register and analyze the amplitude-frequency characteristics of the clavicle at various positions of the upper limb, with pathology of the upper limb;

3. the device allows the dynamics to evaluate the mechanical characteristics of the clavicle;

4. the device allows the survey in the vertical position of the subject, to move the vibrator in a vertical plane.

Claims (1)

A device for diagnosing vibrational resonance characteristics and determining the range of motion of the subject, containing a vibrator with a vibroconductor and a sensor for measuring the signal associated with the control and registration device, characterized in that the device is equipped with an elevator, on which the vibrator is mounted with the possibility of its movement in the vertical plane, the vibroconductor made with the possibility of ensuring its tight contact with the surface of the collarbone of the subject due to the articulation of the rod of the vibroguide with a metal area Second, allowing to modify the metal pad tilt angle in any plane micrometer connected through the armature and stem vibrovodom, wherein the anchor is adapted to be upward and downward by a distance determined by a micrometer, and for measuring the sensor signal is formed as a displacement sensor.

Images