RU1811817C - Apparatus for preparation and sterilization of demineralized osteal matrix - Google Patents

Abstract

Scope: medicine, specifically traumatologists and orthopedists. The purpose of the invention is to shorten the preparation of demineralized bone matrix. SUMMARY OF THE INVENTION: the device comprises a bath with ultrasonic emitters electrically connected to a power unit. A tubing-connected hydraulic pump has been introduced into the device. Ultrasonic emitters are made in the form of disks equally spaced on the bottom, lid and walls of the bath. The bathtub is made with a discharge valve and a mesh container installed in it, 2.il.

Description

The invention relates to medicine, specifically to traumatology and orthopedics.

The purpose of the device is to shorten the preparation of demineralized bone matrix.

Figure 1 shows a General view of the proposed device (schematically); Fig. 2 shows a bath with a sectional mesh container and ultrasonic emitters.

The device contains a power supply unit (B.P.), an installation with an ultrasonic bath 1, cover 2, a hydraulic pump 3. In the walls of the bath 1 and cover 2, ultrasonic transducers 4 are hermetically mounted relative to each other and at different altitude levels, power which is carried out by means of alternating current with a voltage of 220 V and a frequency of 50 Hz. On the lid 2 there is an exhaust valve 5 for removing gases from the van-1 van 1. formed therein during operation of the device. A sectional mesh container 6. is installed in the bath 1. It is designed to evenly place the transplants in the bath 1. The hydraulic pump 3 with adjustable capacity contains a special flexible tube 7 mounted horseshoe-shaped and connected to the electromechanical part of the pump 3. The tube 7 is used to pump the working solution; without contact with the electromechanical part of the pump 3. The tube 7 is made of a bio-inert material (for example, silicone). A pipe 8 connects the bath 1 to the pump Z. The taps 9, 10, 11 and 12 are placed on the pipe 8 and serve to control the supply of working solutions. Tank 13 is a reservoir for working fluids. Thermostatic device 14 is connected to the bath. 1 and serves to heat and maintain the desired temperature of the working solution in the bath 1.

The device operates as follows.

The sections of the container 6 are uniformly loaded with pre-crushed grafts, hermetically

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clog the container 6 to prevent grafts from falling out and place the container 6 in the bath 1. The dimensions of the openings in the mesh walls of the container are 3-5 mm, that is, the sizes of the grafts are smaller, so the latter do not fall out of the openings of the walls of the container 6. The container 13 is filled the necessary working solution and pump it into the bath 1. At the same time, the taps 12.9 and 10 are closed. Filling the bath 1 with a working solution, close the tap 12 and open the tap 11 (taps 9 and 10 are open). Thus, the device is brought into operation. After filling the bath 1 with the working solution, thermostatic fixture 14 is turned on. The necessary temperature is maintained automatically using the thermostat. Next, the desired mode of circulation rate of the working solution is selected by setting the toggle switch of the pump capacity regulator 3. for a certain division of the scale (optimal speed mode working solution circulation - 20-30 l / min). The working solution, heated to the required temperature, begins to circulate through the closed bath-pump system through line 8. The power supply is turned on automatically. By means of ultrasonic emitters 4, the working solution and the grafts contained therein are voiced. Ultrasonic emitters 4 are included in operation synchronously. The duration of each stage of the device is set using a time relay. All stages of the preparation and sterilization of bone matrix are fully automated. Upon completion of the work, the device is put into an idle state in the reverse order of the above.

The device eliminates contamination and infection of bone grafts during the preparation of the demineralized matrix; facilitates the work of personnel ;, reduces the time for preparing the matrix by 8-10 times.

The presence of a section container b maintains an even distribution of the grafts in the bath at all stages of the preparation and sterilization process. Working solution evenly washes them from all sides; crowding of the grafts in the bath 1 is avoided.

The continuous mixing of the solution in the bath 1 using the pump 3 ensures close interaction of the working solution with all areas of the grafts and

injects the working solution into all crevices, cells and cavernous sinuses of the bone tissue, which accelerates the flow of chemical processes and improves the quality of preparation of the demineralized bone matrix.

It should be noted that the working solution, depending on the stage of preparation of the matrix, can, for example, be: 0.6 N hydrochloric acid; 0.1 N sodium alkali; degreasing solution, antiseptic solution. Upon completion of one step, one of the listed solutions is drained and bath 1 is filled with another type of solution. For example, after the demineralization step, 1 hydrochloric acid solution is drained from the bath and

it is filled with an alkali solution (to neutralize the pH and remove chlorine ions from bone grafts). In the sterilization step, bath 1 is filled with an antiseptic solution, in particular a solution of silver and copper.

The location of the ultrasonic emitters 4 on all walls of the bath 1 and at different altitude levels allows for uniform, finer processing

transplant solutions, which, under the proposed arrangement of emitters 4, are exposed to ultrasound. viyu in any of its areas and from all sides is the same. This ensures high quality of preparation and sterilization of demineralized bone matrix and reduces its preparation time by 8-10

time.

Claims (1)

The claims . A device for preparing and sterilizing a demineralized bone matrix, comprising a power supply unit, a bath with an ultrasonic emitter at the bottom, electrically connected to the power supply unit, which includes, in order to reduce the preparation time of the bone matrix, a bath thermostat, a hydraulic pump with a pipe, and additional ultrasonic emitters made in the form of disks located on the bottom, lid and walls of the bath, which is made with an exhaust valve and a sectional mesh container installed in it.