RU2241495C1 - Composition of carboplastic for removing osseous defects - Google Patents

Abstract

FIELD: medicine, oral surgery.

SUBSTANCE: composition of the suggested carboplastic contains a carbon tissue of TGN-2M type and polyamide film 12/10, additionally, it contains the powder of metallic boron. Components are taken at certain quantitative ratio. The suggested composition of carboplastic in question is of high physico-mechanical properties, constant roentgenocontrast. It is, also, nontoxic and not carcinogenic.

EFFECT: higher efficiency.

3 ex, 1 tbl

Description

This invention relates to medicine, namely to maxillofacial surgery, and can be used to eliminate bone defects.

The known composition of carbon fiber to eliminate bone defects "Ostec", which contains carbon fabric brand TGN-2M, polyamide film 12/10 in the following ratio of components (wt.%.)

Carbon fabric TGN-2M 65

Polyamide film 12/10 35,

which is a press package consisting of alternating between themselves carbon fabric TGN-2M size 100 × 100 × 0.34 - 7 layers; polyamide film 12/10 in the form of a film measuring 100 × 100 × 0.2 mm - 7 layers (TU-48-4807-229-89).

However, the indicated Ostek material, with all its positive qualities, has one serious drawback - it is radiolucent with all the ensuing consequences: when eliminating various bone defects in a person with Ostek carbon material, the carbon material is not visualized in the control study of X-ray images and computed tomograms. In the postoperative period, it is impossible to trace the further fate of the carbon implants installed during operations.

The aim of this invention is to increase the radiopaque properties of the material "Ostek" used to eliminate bone defects.

This goal is achieved by the fact that in the composition of carbon fiber to eliminate bone defects containing carbon fabric brand TGN-2M and polyamide film 12/10, a distinctive feature is that the composition additionally contains a powder of metal boron in the following ratio of components (wt.%.).

carbon fabric brand TGN-2M 45-65

metal boron powder 2-20

polyamide film 12/10 the rest

It is desirable that the composition of carbon fiber to eliminate bone defects contained a powder of metal boron with a particle size of 20-50 microns.

A method of producing carbon fiber to eliminate bone defects is described in the examples.

Example 1

The press bag is prepared as follows: the carbon fabric of the TGN-2M brand is transferred with a 12/10 polyamide film, between which the metal boron powder is evenly distributed, the thus obtained press package consisting of alternating carbon fabric of the TGN-2M brand with a size of 100 × 100 × 0.34 mm - 7 layers; 12/10 polyamide film in the form of a film with a size of 100 × 100 × 0.2 mm - 7 layers and a powder of metal boron 20-50 μm - 12 wt.%, evenly distributed between the fabric and the polyamide film, is subjected to hot pressing at a temperature of 210 ± 5С °, pressure 100 kg / cm ² and exposure for 1 hour. The ratio of components: carbon fabric TGN-2M, polyamide film 12/10, metal boron powder is 53-35-12 wt.%, Respectively. The properties of the obtained carbon fiber are shown in the table.

Example 2

Press package consisting of TGN-2M carbon fabric, 12/10 polyamide film and metal boron powder in an amount of 2 wt.%. respectively, subjected to hot pressing according to example 1. The ratio of the components of the press bag is 65-33-2 wt.%. respectively. The properties of carbon fiber are shown in table 1.

Example 3

Press package consisting of carbon fabric TGN-2M, polyamide film 12/10 and metal boron powder in an amount of 20 wt.%. subjected to hot pressing according to example 1. The ratio of the components of the press package are 45-35-20 wt.%, respectively. The properties of carbon fiber are shown in table 1.

Technological equipment allows to obtain workpieces with a size of 20 × 200 × 300 mm., Of which implants are made, by machining according to drawings or casts as applied individually to the patient.

The advantages of the material include:

- radiopacity;

- sustainability of exposure to the biological environment;

- lack of toxicity and carcinogenicity;

- the indifference of wear products;

- lack of corrosion phenomena;

- resistance to fatigue failure;

- low wear under friction;

- electrical conductivity close to body tissues;

- the possibility of obtaining an elastic modulus close to the elastic modulus of the bone.

Claims (2)

1. The composition of carbon fiber to eliminate bone defects, containing carbon fabric brand TGN-2M and polyamide film 12/10, characterized in that the composition additionally contains a powder of metal boron in the following ratio, wt.%: Carbon fabric TGN-2M 45.0-65.0 Metal Boron Powder 2.0-20.0 Polyamide film 2. The composition of carbon fiber to eliminate bone defects according to claim 1, characterized in that it contains a powder of metal boron with a particle size of 20-50 microns.