RU87887U1 - DEVICE FOR DIAGNOSTIC OF HEMARTROSIS AND KNEE JOINT SYNOVITIS - Google Patents

Abstract

The aim of the invention is the provision of detection and control of an increase or decrease in the value of synovitis and hemarthrosis of the knee joint. The goal is achieved by installing a horizontal plate on the crest of the tibia distal to the tuberosity of the tibia. In this case, the slider is moved so that the fixed bar connected to it by means of the sliding bar touches the front surface of the patella. A stop on the vertical plate prevents lateral displacement of the sliding bar. The distance between the iliac crest and the front surface of the patella, measured in centimeters, is recorded using a scale.

The proposed device allows you to measure and monitor the dynamics of the magnitude of hemarthrosis and synovitis in the knee joint, due to changes in the distance between the tibial crest and the anterior surface of the patella.

Description

The utility model relates to medicine, namely to traumatology and orthopedics.

Analogs: A device is known for determining the amplitude of movements in the cervical spine (Vershinin, A.E. An angle meter for determining the amplitude of movements in the cervical spine / A.E. Vershinin, GF Nazarenko // Orthopedics, traumatology and prosthetics. - 1986 - S.49-50). The device consists of 2 transparent plexiglass discs, equipped with a scale and movably mounted on a vertical bar in the vertical and horizontal planes, respectively. Moreover, the vertically located disk has a cavity where the metal ball is placed, and the horizontal disk is equipped with an arrow pointer, rigidly fixed to the upper end of the bar. The lower end of the strap is movably connected with a lightweight helmet, providing rotation of the device around a vertical axis.

A well-known sensor of micromotion of bone elements of the leg (Schurov, V.A. Method for measuring axial micromotion of bone fragments of the leg in compression and distraction osteosynthesis / V.A. Shchurov, B.I. Kudrin, A.P. Shein // Orthopedics, traumatology and prosthetics. - 1985. - 1. - P. 52-53). Consists of a housing with a groove and a screw for fixing.

Criticism of analogues:

1. The complexity of the design increases the duration of the study.

2. For the use of devices requires special conditions (the presence on the limbs of the Ilizarov apparatus, the manufacture of a special helmet for fixing the elements of the device.

3. A large number of structural elements does not exclude measurement errors.

Prototype.

As a prototype taken device for determining the functional shortening of one lower limb. (Gropyanov V.M. A device for determining functional shortening of one lower limb / V.M. Gropyanov // Orthopedics, traumatology and prosthetics. - 1982.-No.6. - P.70-71). It consists of a main plank with a spirit level fixed on it and 2 side planks (branches) located perpendicular to the front main plank. The branch is fixed motionless at one end of the main bar, and the mobile branch (on collars) is on the other. A sufficient length of the slats allows measurements at various sizes of the pelvis. The position of the patient during the examination is vertical. The main anterior level with a spirit level is set in front of the examined person, and the lateral branches are pressed to the tops of the iliac crests. After that, under the heel of the shortened limb, the measuring boards of different thicknesses available in the set are laid until the level control shows the horizontal level of the front main bar connecting the lateral branches resting on the iliac crests.

Criticism of the prototype:

1. The device consists of unconnected parts, which complicates the measurement.

2. The device is not equipped with a measuring scale and involves the additional use of the ruler.

3. The different widths of the measured planks make it difficult to select them to achieve the optimal level of spirit paste, making measurement difficult.

The purpose of the invention: this device is intended to provide objective measurement and control of the increase or decrease in the value of synovitis and hemarthrosis of the knee joint.

The essence of the proposed utility model

Proposed as an invention, the device is depicted in figure 1 and figure 2, where is the horizontal plate (figure 1, position 1; figure 2, position 1)

- vertical plate (figure 1, position 2; figure 2, position 2)

- scale (figure 1, position 3; figure 2, position 3)

- limiter (figure 1, position 4; figure 2, position 4)

- frame (figure 1, position 5; figure 2, position 5)

- slider (figure 1, position 6; figure 2, position 6)

- sliding bar (Fig. 1, item 7)

- fixed bar (figure 1, position 8; figure 2, position 8).

A device for diagnosis and dynamic monitoring of hemarthrosis and synovitis of the knee joint consists of a horizontal plate (Fig. 1, Pos. 1; Fig. 2, Pos. 1) to which a vertical plate is connected (Fig. 1, Pos. 2; Fig. 2, item 2) with a scale (figure 1, item 3; figure 2, item 3). To the vertical plate (figure 1, position 2; figure 2, position 2) attached limiter (figure 1, position 4; figure 2, position 4) and a frame (figure 1, position 5; figure 2, position 5). To the frame (Fig. 1, Pos. 5; Fig. 2, Pos. 5) a slider (Fig. 1, Pos. 6; Fig. 2, Pos. 6) is movably fixed with a sliding bar (Fig. 1, Pos. 7 ) on which the fixed bar is fixed (figure 1, pos. 8; figure 2, pos. 8).

An example of a specific application of the device:

This goal is achieved by installing a horizontal plate (figure 1, position 1; figure 2, position 1) on the tibial crest distal to the tibial tuberosity. In this case, the slider (figure 1, position 6; figure 2, position 6) is moved so that the strap connected to it (figure 1, position 8; figure 2, position 8) by means of a sliding plate ( figure 1, pos.7) touched the front surface of the patella. In this case, the limiter (figure 1, position 4; figure 2, position 4) prevents the lateral displacement of the sliding bar (figure 1, position 7). The distance between the iliac crest and the front surface of the patella is recorded using a scale (Fig. 1, pos. 3; Fig. 2, pos. 3) in centimeters. First, a measurement is made on a healthy limb, then on a patient. The difference between the values obtained during the measurements characterizes the value of hemarthrosis or synovitis. Subsequent measurements taken daily allow you to control the dynamics of the process and adjust the treatment.

Features distinguishing from the prototype:

The proposed device differs from the prototype in the following:

- All elements are interconnected, and in the prototype device, the main front bar, spirit level, side jaws, measuring plates of different thicknesses available in the set, the front main bar are not interconnected and each design node requires separate manipulation.

- The device is equipped with a measuring scale that allows you to make objective measurements directly on the patient.

Positive effect

The technical result of the proposed utility model is the diagnosis and dynamic control of hemarthrosis and synovitis of the knee joint. All elements of the device are interconnected, which provides simplicity and convenience of measurements. The measuring scale allows you to make objective measurements directly on the patient.

Information taken into account:

1. Vershinin, A.E. Goniometer for determining the amplitude of movements in the cervical spine / A.E. Vershinin, G.F. Nazarenko // Orthopedics, traumatology and prosthetics. - 1986. - S. 49-50.

2. Schurov, V.A. The method of measuring axial micromotion of bone fragments of the leg under compression-distraction osteosynthesis / V.A. Schurov, B.I. Kudrin, A.P. Shein // Orthopedics, traumatology and prosthetics. - 1985. - 1. - P.52-53.

3. Gropyanov, V.M. The device for determining the functional shortening of one lower limb / B.M. Gropyanov // Orthopedics, traumatology and prosthetics. - 1982.-No.6. - S.70-71 - prototype.

Claims (1)

A device for the diagnosis of hemarthrosis and synovitis of the knee joint, containing a bar with a spirit level and 2 side branches and measuring planks, characterized in that the device contains a horizontal plate, a vertical plate, a limiter, a frame, a slider, a sliding bar, a fixed bar, interconnected and representing a single design.