SU1487866A1 - Apparatus for measuring longitudinal movement of muscles - Google Patents

Description

The invention is intended to determine the degree of reduction of contractile

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muscle ability after surgery for damage to the tendon. The device consists of two racks 1 with needles 2, a guide with a longitudinal slot and a slider 10, equipped with a movable needle with a handle 24, located in a longitudinal hole. The handle 24 is installed in the groove 21 of the slide 10. When the moving needle is immersed in the muscle on which the device is placed by the needles 2, and muscle bundles are reduced, their movement is evaluated on a scale of 26. The depth of immersion in the muscle of the moving needle is determined on a scale 22 applied along groove 21 of the slide 10, using the slot 25 on the handle 24. 6 Il.

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1487866

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The invention relates to medicine, in particular to methods of treatment of patients with injuries of flexors tendons of the fingers of the hand.

The purpose of the invention is to determine the degree of reduction of the contractility of the muscle after surgery for damage to the tendon.

FIG. 1 shows the device, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 - screw for restricting the rotation of the slide relative to the guide; in fig. 6 - section G-Y in FIG. one.

The device for measuring longitudinal movements of the muscles consists of two fixed posts 1, each in the lower part of the needle 2 with a limiter 3 immersions, a cylindrical part 4, thickening 5 with an opening 6 for connection with the guide 7. Each stand 1 in the upper part ends with a handle 8. Guide 7 has a circular shape in cross section and has a longitudinal slot 9. A slider 10 is installed on the guide 7, having the ability to move freely along the longitudinal axis of the guide 7. From moving around the longitudinal axis of the guide 7 to The slider 10 is limited by a round rod 11 of a screw 12 with a washer 13 placed in the slot 9. The slider 10 consists of a thickening 14 with a ledge on which the reference mark 15 is made, in the thickening 14 a hole 16 is made for the guide 7, and in the cylindrical part 17 of the slide 10 a longitudinal an opening 18 in which a movable needle 19 is installed, fixed in the desired position by a stopper 20. The cylindrical part 17 has a groove 21 with a scale 22 of the immersion depth of the tip 23 of the movable needle 19 on which the handle 24 is installed with a slot 25 which is simultaneously a mark tscheta. Between racks 1 fixed scale (ruler) 26 by means of screws 27.

The device works as follows.

A device is installed on the studied area of the muscle. The slider 10 is mounted on the guide 7 against the mark 0. The movable needle 19 is released by the stopper 20. The handle 24 moves the movable needle 19 into the superficially located bundles of muscle fibers. Taking the operation under local anesthesia, the patient flexes the fingers. The resulting linear deformation of the investigated area of the muscle is transmitted as a mechanical force to the movable needle 19 and causes the slider 10 to move. The mark 15 of the slider 10 shows on the scale 26 the distance in millimeters that the slider 10 deviates and, consequently, the value of the linear deformation of the muscle ( its abbreviations). In cases of operation under the drug

In this way, the study is performed in the same way with the only difference that before measuring all fingers of the hand are set at the same angle of flexion in the joints, and then after installing the device the corresponding finger is unbent. The resulting stretching of muscle fibers is transmitted to the movable needle 19. The study is carried out both in the field of muscle fiber bundles, ending in a damaged tendon, and in a similar area of the intact tendon. To determine the linear deformation of deeply located bundles of muscle fibers in the zone of localization of the movable needle 19 strictly parallel to the direction of the muscle fibers, they are separated by a distance equal to the linear deformation of the superficially located muscle bundles passing into the intact tendon. Then, the stopper 20 releases the movable needle 19 and moves the handle 24 to the required depth, which is determined on a scale of 22. Thus, the linear deformation of muscle fiber bundles located at different depths is examined layer by layer. After the study, catgut sutures are applied to the stratified muscle areas.

With an equal angle of extension of the joints of 2, 3, 4 and 5 fingers and, consequently, the same tension of the tendons of the flexor muscles of the fingers of the hand, the magnitude of the linear deformation of the muscle bundles, passing into the corresponding tendons, is the same. Therefore, by the difference in linear deformation of the intact part of the muscle and the reborn, it is possible to judge the contractility and elasticity of the muscle fibers, resulting in a damaged tendon. In cases where the difference in the magnitude of the linear deformation of intact and scar-reborn muscle areas is 15-25%, then after the suture of the tendon or tendonoplasty, the contractility of the muscle fibers is restored. If the difference of these indicators is more than 30%, then the probability of complete restoration of the contractile ability of the changed muscle area is significantly reduced, therefore it is necessary to fix between each other the places of the transition of the muscle fibers to the damaged and intact tendons.

Thus, the practical application of the proposed device allows to determine the degree of changes that occurred in the muscle fibers, to predict the possibility of restoring their contractile ability.

Claims (1)

Claim Device for measuring longitudinal muscle displacement, containing two compounds 1487866 stands with needles, each other, as well as a gauge, characterized in that, in order to determine the degree of muscle contractility reduction after surgery for tendon damage, a guide fixed between the posts with a slider, equipped with a longitudinal hole, groove and inserted in The aperture has a movable needle with a stopper and a handle installed in the groove, and the gauge is made in the form of two mutually per5 pendicular scales located along the guide and the slot of the slide. 19Fig FIG. 6