SU586907A1 - Device for dynamic relieving of the knee joint - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to medicine and concerns surgery of the treatment, the knee joint and its restoration, its functions.

The closest solution to the invention to the technical essence and the achieved

The result is an apparatus for dynamically clearing the knee, a joint, containing axial, swivel and locking brackets with backs and spokes, bending-releasing device, such as double-hinged screws, supporting, connecting brackets, and gear mechanisms that connect axial and swivel clamps and made in the form of gears, toothed sectors with distractors that drive them and fix them pj.

However, this (the apparatus does not provide for the simultaneous implementation of three types of knee-joint-rolling movements, rotation of the articular ends of one with the other around the frontal axes and rotation around the vertical axis and thereby restoring the lost movements in the knee-joint.

In order to ensure simultaneous restoration of the articular cartilage and joint functions, the apparatus is equipped with brackets with hinges mounted on an axial bracket and pivotally connected to the gear wheels, and the gear sectors are connected to distractors with the possibility of rotation relative to the longitudinal axis.

The drawing shows schematically an apparatus for dynamically unloading the knee joint in a perspective view.

The device contains axial 1, rotary 2 and 3 and closing 4 brackets; bend the buckle-securing device in the form of clamping screws 5 with a double hinge 6 | support bolts 7, connecting brackets; gears connecting the axle bracket 1 and the no-bopoiw brackets 2 and 3; brackets8 with hinges 9 and 10 mounted on an axial bracket.

Claims (1)

The gear mechanisms are made in the form of gear wheels 11 and gear sectors 12 with distractors 13, which are connected by carriers 14, and fixation elements 15 - 18, while brackets 8 are connected pivotally to gears 11. Axially 1 and closing 4 brackets form with the spokes 19 and 20 is a rigid system designed to fix the distal end of the femur, and the needle 19 of the axial bracket passes through the axis of rotation of the joint and aligns it with the axis of rotation of the apparatus. Swivel brackets 2 and 3 with knitting needles 21 and 22 form another rigid system designed to fix the other articular end, for example, proximal to the right end of the Bone. Both rigid systems1 are interconnected by distractors 13, with the cogged sectors 12 and the captive screws 23 connected by means of a cylindrical hinge 24 to the retaining bolt 25 with the latter and can be rotated about the longitudinal axis. The gear wheel 11 is connected to the axial bracket 1 by means of a bracket 8 with hinges 9 and 10, while the hinge 9 is passed through the central axial hole of the gear wheel 11 and fixes it to the bracket, and the hinge 10 fixes the bracket on the end of the axle bracket 1 shaft. As a result of such fixation, you can rotate the gear around the central axis, and the entire gear mechanism around the diametral axes of the gear wheels and sectors, which, in turn, makes it possible to carry out simultaneous rolling and sliding avnyh ends etnositelnor one another around the front axles and rotation about a vertical axis in an unloaded Paratov knee joint. The apparatus is used as follows. Initially, the needle 19 of the axial bracket 1 is carried out through the limb. Since the movement in the knee joint occurs by instantaneous movement of the center of rotation, a unique center mechanism with a moving center of rotation, which reproduces the kinematics of the joint, is used in the device. the plane of movement of the joint and through that point of the articular end of the femur, which is located; 1 cm vysche than the hillock of the external epicondyle of the femur. After application of the back 19, the needle 2O of the closing bracket 4 is held in the frontal plane through diaphragms. Then, the spokes 21 and 22 of the turn brackets 2 and 3 are passed through the other IVANH end. After that, the ends of the spokes are tensioned in the corresponding brackets. If, after applying the apparatus, there is a displacement of the articular ends, then proceed to a gradual and. dosed their reposition. After removing distractors with adjustable nuts, displacing the articular ends along the length and at an angle and establishing a gap between the articular ends, the contracture is removed and the movements in it are developed using tightening screws 5 with a double hinge 6. When using the apparatus for fixing bone fragments with fractures while , the apparatus is supplied with the restoration of the functions of the proximal joint with another four four brackets (each bone fragment is fixed with two or three staples with knitting needles). for dynamic unloading of the knee joint, containing axial, turning, and closing brackets with knitting needles and spider holders, a bending-unfolding device in the form of clamping screws with a double hinge, support bolts connecting the skogat, and gear mechanisms connecting; axial and swivel brackets and made in the form of gears, gear sectors with distractors and their carrier and fixation elements, so that, in order to ensure simultaneous restoration of the articular cartilage and joint functions, It has ronshteyny with hinges mounted on the axle bracket and pivotally associated with yubchatymi; wheels and toothed sector connected to distrakto-; frame can be rotated about the longitudinal axis. Sources of information taken into account during the examination: 1. Application No. 2138066/13,: cl. A 61 On 17/18, 1975, which decided positively about the issue of the author's certificate.