RU2629352C2 - Method for personified immobilizing articles manufacture - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: biometric parameters of the patient's anatomical region required for immobilization are measured, and the projection position of the joint relative to the created immobilizing article is determined. A computer triangular model is formed with 100-300 mcm thick lines in the first layer lines at an angle of 30-50 degrees to each other at a distance of 1 mm. In the second layer, lines are created over the first one at an angle of 90 degrees to each other, forming a network structure. The third layer is created similarly to the first, the fourth layer is similar to the second, and so on. At the projected location of joint, tightly adjacent lines are formed parallel to each other, overlapping the zone of increased risk of article fracture. The generated computer model of the product is printed on a 3D printer.

EFFECT: method allows to create objects with a simulated network structure and strength properties that exclude the risk of immobilizing article fracture in the place of increased load.

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Description

The present invention relates to medicine, namely to traumatology, and can be used for the manufacture of immobilizing products (spindles, orthoses, tires, etc.) used in the treatment of diseases and injuries of the musculoskeletal system.

As a prototype, a method was chosen (see RF patent 2164391, 2001), which consists in measuring the biometric parameters of the patient’s anatomical region, creating a triangular computer model and then printing it on a 3D printer.

However, the known method does not allow in the triangular space to change the directions of the layers, to create objects with a simulated mesh structure and strength properties, it does not allow automatic correction of the form by the product itself at the stage of treatment.

The task of the invention is to improve the method.

The technical result is the ability to create objects with a simulated mesh structure and strength properties, eliminating the risk of fracture of the immobilizing product in place of increased load.

The technical result is achieved due to the fact that in a method that includes measuring the biometric parameters of the patient’s anatomical region, creating a triangular computer model and then printing it on a 3D printer, the projection location of the joint relative to the created immobilizing product is determined in a triangular computer model of a line 100- 300 microns in the first layer are placed at an angle of 30-50 degrees to each other with a distance between them of 1 mm, in the second layer, lines are created over the first layer along d at an angle of 90 degrees to each other, the third layer is created similarly to the first, the fourth - similarly to the second, forming a mesh structure and alternating layers, and in the place of the projection location of the joint parallel to each other draw tightly adjacent lines that overlap the zone of increased risk of fracture of the immobilizing product, the number layers and the shape of the products in this case depend on the area that must be immobilized.

The proposed method is as follows. After the clinical and radiological diagnosis is established, the biometric parameters (length, width, diameter) of the patient’s anatomical region necessary for immobilization are measured, and the projection location of the joint relative to the immobilizing product is determined. Then form a computer triangular model, placing in the first layer of the line 100-300 microns thick at an angle of 30-50 degrees to each other at a distance of 1 mm. In the second layer, lines are created over the first at an angle of 90 degrees to each other, forming a mesh structure. The third layer is created similarly to the first, the fourth - similarly to the second, etc. Then, in the place of the projection location of the joint, tightly fitting lines are created parallel to each other, overlapping the zone of increased risk of fracture of the immobilizing product. The generated computer model of the product is printed on a 3D printer. The number of layers and the shape of the products depend on the area that needs to be immobilized. After 3-20 minutes, depending on the size, the created product is applied to the area for immobilization, having previously placed a heat-protective fabric under it (English velvet), exposed to it with warm air (hair dryer, thermal station, etc.) at 50-60 degrees and thermoformed. After this, the tissue is removed.

Clinical example.

Patient G., 43 years old. Dz: Closed fracture of the proximal phalanx of the second finger of the left hand.

Upon admission, an x-ray was performed, a diagnosis was made, the dimensions of the second finger (length, width, diameter) and the brush were measured. According to the proposed method, a computer model of the mesh structure orthosis has been created, consisting of 4 layers and having in the place of the projection of the metacarpophalangeal joint a “overlap” zone of three tightly adjacent layers and protecting the orthosis from fracture in the zone of its increased risk. After 8 minutes, the orthosis was printed on a 3D printer. By thermoforming, this immobilizing product was applied to the second finger of the left hand. During the treatment, the patient repeatedly washed in the shower, did not use additional fixatives and linings. When the edema decreased, the patient independently pushed the orthosis with a home hairdryer for more stable fixation. 4 weeks after consolidation of the fracture, this product was removed. The skin is clean, physiological in color. Xerosis, allergic reactions during the treatment were not.

The method makes it possible to create objects with a simulated mesh structure and strength properties, eliminating the risk of fracture of the immobilizing product in place of increased load. Due to the proposed arrangement of 3D filaments, the shape of the immobilizing product is automatically adjusted (adaptation to individual anatomical bends) at the stage of treatment under the influence of the patient’s own temperature, without violating the stability of fixation.

Claims (1)

A method of manufacturing personalized immobilizing products, including measuring the biometric parameters of the patient’s anatomical region, creating a triangular computer model and subsequent printing on a 3D printer, characterized in that the projection location of the joint relative to the created immobilizing product is determined in a triangular computer model of a line 100-300 μm thick in the first layer is placed at an angle of 30-50 degrees to each other with a distance between them of 1 mm, in the second layer, lines are created over the front layer at an angle of 90 degrees to each other, the third layer is created similarly to the first, the fourth - similarly to the second, forming a mesh structure and alternating layers, and in the place of the projection location of the joint parallel to each other draw tightly adjacent lines that overlap the zone of increased risk of fracture of the immobilizing product , the number of layers and the shape of the products in this case depend on the area that must be immobilized.