RU45258U1 - DEVICE FOR FORMING DEMINERALIZED BONE TRANSPLANTS - Google Patents

Abstract

The utility model relates to the field of medicine, and more specifically to tools for the formation of demineralized bone grafts used to fill bone cavities with various defects of the musculoskeletal system during the surgical treatment of diseases with post-traumatic osteomyelitis. The purpose of creating a utility model is to improve the quality of the preparation of the graft by eliminating the possibility of disruption of its structure and obtaining the possibility of the formation of the graft in the form of thin-sheet calibration plates. The device comprises a housing made in the form of two opposed sections and a cutting element mounted in vertical guides. The proposed device can and should be used in the departments of reconstructive surgery of medical institutions to fill the cavity with a transplant.

Description

The utility model relates to medicine, and more specifically to tools for the formation of demineralized bone grafts used to fill bone cavities with various defects of the musculoskeletal system during the surgical treatment of diseases with post-traumatic osteomyelitis.

Purulent - inflammatory processes occupy a leading place in the structure of morbidity and mortality. Among them, chronic post-traumatic osteomyelitis is especially distinguished among them by the severity of the course, difficulties in diagnosis and adverse outcomes. The surgical method of treatment is the main most effective in the treatment of this type of pathology.

Radical surgery in itself involves not only the removal of the focus of osteomyelitis as such, but also the elimination of favorable conditions for the existence of infection. The most important element of surgical intervention is necrsecvestrectomy followed by graft plastic surgery. As a result of this, high-quality transplant preparation is one of the most important and necessary conditions for successful and effective treatment.

A device for cutting a graft containing a drive, a working body in the form of a cutter and a protective casing (1) is known.

The disadvantage of this device is the design complexity.

A device for preparing a transplant is known, comprising a drive, a working body, a transplant supply unit and a collector (2).

The disadvantage of this device is the possibility of obtaining a transplant only in the form of chips.

A device for preparing a transplant is known, comprising a body, a working body and a drive (3).

The disadvantage of this device is the ability to prepare the transplant only in the form of pins.

A device for preparing a transplant is known, comprising a base, a cutting tool located in a movable frame (4).

The disadvantage of this device is the ability to prepare the transplant only from soft tissues.

A device for preparing a transplant is known, comprising a hollow body with a cutting element (5).

The disadvantage of this device is the increased complexity of cutting and the low quality of the prepared graft due to a violation of its structure and the inability to obtain thin-sheet calibrated graft plates.

The purpose of creating a utility model is to improve the quality of the preparation of the graft by eliminating the possibility of disruption of its structure and obtaining the possibility of the formation of the graft in the form of thin-sheet calibration plates.

This goal is achieved by the fact that the casing is made in the form of two opposite mounted sections, separated by a groove for accommodating the cutting element, and in the casing sections spring-loaded pistons with rods are installed towards each other, equipped with elements for fixing their position, the casing sections are made of translucent material, on the sections the millimeter scale is made, the cutting element is installed in vertical guides and equipped with a spring-loaded handle, and the device can be made biologically and chemically inert material.

Comparison of the proposed device with other well-known in the field of medicine, showed its compliance with the criteria of a utility model.

The utility model is illustrated by graphic material, which shows the proposed device.

A device for the formation of demineralized bone grafts contains a body made in the form of two sections 1 and 2 of translucent material and having millimeter scales 3 and 4. Sections 1 and 2 are oppositely mounted on the base 5 and separated by a groove 6 to accommodate the cutting element 7, equipped with a spring-loaded handle 8 and installed in the guides 9. In sections 1 and 2, spring-loaded pistons 10 and 11 with rods 12 and 13 are installed towards each other. Pistons 10 and 11 are equipped with elements 14 and 15 for fixing their position in sections 1 and 2. Billets 16 d a mineralized bone graft is placed in section 1 of the body.

The device can be made of biologically and chemically inert material, will allow you to repeatedly perform its disinfection treatment.

The proposed device is used as follows.

The transplant blank 16 is placed in section 1 of the device. Move the piston 10 to the required distance on a scale of 3 from section 1, while pushing the workpiece to obtain graft plates of a given thickness. Moving the cutting element 7 by the handle 8, the graft plate is cut off. Again move the piston 10 to a predetermined distance on a scale of 3, again cut off the next calibrated graft plate, etc. Thus, in section 2 of the body, a predetermined number of graft plates calibrated by thickness is accumulated. At

If necessary, the position of the pistons 10 and 11 is fixed by the elements 14 and 15.

Due to sterility in section 2, storage of prepared graft plates is possible. The device is disassembled and the graft plates are used to fill the bone cavities.

Using the proposed device allows you to get the required number of calibrated thin-sheeted plates of demineralized bone graft without disturbed structure with minimal labor, the use of which will increase the efficiency and reduce the treatment time for replacing the cavity in the treatment of chronic post-traumatic osteomyelitis, it allows to optimize tactics and significantly reduce treatment time.

The proposed device can and should be used in the departments of reconstructive surgery of medical institutions to fill the bone cavity with a transplant.

SOURCES OF INFORMATION:

1. Imamaliev A.S. “Harvesting and preserving the tissues of the musculoskeletal system” M .: Medicine, 1970, S.35-36.

2 Autosvid. USSR No. 152464, Cl. A 61 B 17/16, 1989.

3. Autosvid. USSR No. 988280, Cl. A 61 B 17/16, 1983.

4. Autosvid. USSR No. 1482679, Cl. A 61 B 17/32, 1989.

5. Autosvid. USSR No. 34180, Cl. A 61 B 17/161, 1932.

Claims (5)

1. A device for the formation of demineralized bone grafts containing a hollow body and a flat cutting element, characterized in that the body is made in the form of two opposed sections, separated by a groove to accommodate the cutting element, and in the sections of the body spring-loaded pistons with rods are installed towards each other, equipped with elements for fixing their position. 2. The device for forming demineralized bone grafts according to claim 1, characterized in that the sections of the body are made of translucent material. 3. A device for forming demineralized bone grafts according to claim 1 or 2, characterized in that the millimeter scale is made on sections of the body. 4. The device for forming demineralized bone grafts according to claim 1, characterized in that the cutting element is installed in vertical guides and is equipped with a spring-loaded handle. 5. The device for forming demineralized bone grafts according to claim 1, characterized in that it is made of biologically and chemically inert material.