Technical field

The invention relates to the sphere of medical devices, in particular to dental units and can be used in their suction systems. Background art

There are various filters (1-4) which are located in hydro blocks of dental devices or are built in separate suction systems. Those filters have inlet and outlet hoses, a covering to which mesh filter is attached. On that mesh with the help of inlet hose a content solid substance (pieces of tooth, filling, amalgam, blood clot and etc.) moved from suction system is collected which is arising during dental treatment.

The main deficiency of those filters is that at the end of each working day it is necessary to open the covering, remove the mesh filter, empty it, then wash, disinfect and place back. It's unpleasant, dirty, dangerous and time-consuming procedure.

By technicity the filter (5) of dental device suction system is much closer to the invention, which has a connecting module to which is attached the container receiving contents from suction system arising during dental treatment. A filter which has a preventing mesh is placed in the receiving container. The outlet hose is attached to the connecting module, from suction system moved content inlet hose is attached at the bottom of container.

During dental treatment the content of suction system is moved to the receiving container. The solid substance with the help of mesh filter remains in the container.

The deficiency of this filter is also that at the end of each working day it is necessary to disconnect the receiving container with filter from connecting module, empty, then wash, disinfect and again bring to working state.

Disclosure of invention

Object of the invention is to ensure the safety of dental device solid substance filter service and shorten its service time.

Essence of an invention is that in the filter of dental device suction system, which has a connecting module with its outlet hose, inlet hose, mesh filter and receiving container, according to the invention the inlet hose is attached to the input of connecting module, on the inner surface of connecting module there is made a pipy projection concatenated with the output of module and a hole concatenated with the input of module, on the side face of module there are made fixed notches and the filter additionally has a covering rigidly attached to the receiving container and installed in the covering lock-fixer with a possibility of rotation with its inlet and outlet pipy projections, on the outer surface of covering there are made projections with a possibility of fixation in the notches of module and on the inner surface of covering are made inlet and outlet holes moreover the mesh filter is placed on the hole of outlet covering.

Description od drawings

Essence of an invention is shown on the graphics depicted on the pictures from 1 to 6 where on the picture 1 the general view of dental device suction system filter in operation is shown on the picture 2 - structural diagram of filter

on the picture 3 - connecting module diagram of filter

on the picture 4 - covering diagram of filter

on the picture 5 - lock-fixer diagram installed in the covering with a possibility of rotation on the picture 6 - view of the container receiving the contents moved from the suction system of filter

Best mode for carrying out the invention

The filter of dental device suction system has a connecting module (1 ) and a filter which consists of the container (2) receiving the content from suction system, covering (4) and installed in it lock-fixer (5) with a possibility of rotation.

The connecting module (2) is fixed at the hose of dental device hydro block suction system. The connecting module (2) has inlet (6) and outlet (7) hoses of content moved from suction system which may have variable outer diameter 6mm, 8mm, 10mm and it gives them an opportunity to connect both to large and small hoses of suction systems. The inlet (6) hose is attached to the input of connecting module (2), outlet (7) hose to the output.

On the inner surface of connecting module (2) is made a hole (8) concatenated with the input of module and a pipy projection (9) concatenated with the output of module, which are provided for attaching the filter to the module (2).

There are made fixed notches (10) on the side face of connecting module (2) through which the filter is fixed to the module.

The lock-fixer (5) with a possibility of rotation installed in the filter covering (4) has inlet (11 ) and outlet (12) pipy projections.

Inlet (13) and outlet (14) holes are made on the inner surface of filter covering (4), moreover a preventing mesh (15) is placed on the outlet hole with the help of which the solid substance remains in the container (3).

On the outer surface of covering (4) fixing projections (16) are made with a possibility of fixation in the fixing notches (10) on side face of connecting module (2). Filter covering (4) is rigidly attached with glue to the container (3) receiving content from suction system.

The connecting module (2) is designed for multiple use. It is made of polystyrene.

The filter is designed for single use. All parts of filter are made of polypropylene.

The suggested filter operates as follows:

When filter is attached to the connecting module (2), the lock-fixer rotates, the inlet (13) and outlet (14) holes of content moved from suction system of covering are opened and the filter is brought to operating position.

At the end of working day it is necessary to disconnect the filter from connecting module (2), during removal the lock-fixer is rotating closing the inlet (13) and outlet (14) holes of content moved from suction system of covering, whereby the filter is brought to non-operating state, in such a way non dropping of hard substance collected on preventing mesh which is installed on outlet hole of covering and non dropping of content of receiving container is ensured.

It is necessary to throw away the used filter, and new filter is attached to the connecting module (2).

The replacement of used filter with new one takes from 10 up to 20 minutes, thus the servicing of the filter becomes short and most importantly safe as the medical staff does not communicate with the content of filter.

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Applicant A. Ghazaryan