JP2588060Y2 - Filter device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for removing and filtering water supplied to a dental treatment instrument, for example, an air turbine handpiece, a water syringe, etc., in dental treatment.

[0002]

2. Description of the Related Art In a dental treatment, an air turbine handpiece or a water syringe (spray) is used.
In order to cool the heat generated at the time of tooth cutting, water is sprayed on the cutting part. In water syringes, water or air or a mixture of water and air is sprayed to clean the oral cavity during or after treatment.

[0003]

As described above, in dental treatment, an instrument that sprays water, air, or spray into the oral cavity is used, but when the spray of water is stopped, bacteria are injected into the instrument. When the instrument is not used, this bacterium proliferates in the instrument, and at the next use, water containing a large amount of this bacterium will be sprayed into the patient's mouth. It was unsanitary.
Furthermore, bacteria that have invaded the instrument penetrate into the instrument hose that supplies water to the instrument, propagate in the hose, and the dead body adheres to the inner wall of the hose and However, the carcass was extremely unsanitary because the carcass sometimes peeled off from the hose and was ejected from the instrument.

[0004]

In order to solve the above-mentioned problems, the present invention provides (1) a dental instrument and an instrument hose for supplying water, air, etc. to the instrument. , A filter device for connecting the instrument and the instrument hose, the filter device being configured to be detachable from the instrument and the instrument hose, and having the instrument therein. A filter unit for filtering water supplied to the instrument from a hose , wherein the filter unit is a filter-sterilized porous
It is a membrane filter made of sheet, or (2) a plurality of membrane filter within the filter device is mounted in cascade, or that different depending (3) pore size of the membrane filter is a filter unit It is a characteristic.

[0005]

The filter device is detachably mounted between the dental instrument and the instrument hose for supplying water to the instrument, and the filter device blocks the movement of bacteria.

[0006]

1 is a sectional view of an essential part for explaining an example of use of a filter device according to the present invention. In FIG. 1, reference numeral 1 denotes a dental instrument such as an air turbine handpiece or a water syringe. An instrument hose for supplying water, air, etc. to the dental instrument 1;
10 is a filter device according to the present invention detachably mounted between the dental instrument 1 and the instrument hose 2, 15 is a coupling for connecting the instrument 1 and the filter device 10, A indicates an air passage, and W indicates a water passage. This filter device 10
For example, one end is fitted into the instrument 1 and the other end is fitted into the instrument hose 2 via packings 3 and 4 made of silicon rubber, for example. The instrument 1 and the instrument hose 2 are connected, and water from the instrument hose 2 is supplied to the instrument 1 through the water path W and air is supplied to the instrument 1 through the air path A.

[0007] A filter unit 20 is provided in the water path of the filter device 10.
A plurality of filter units 20a, 20b, and 20c are arranged in a cascade (column) to filter particles, bacteria, and the like contained in water supplied from the instrument hose 2. When not in use, it blocks bacteria from entering from the instrument 1 side into the instrument hose 2 side. These filter units 20 can be detachably mounted in the filter device 10, and can be removed and replaced with a new unit when clogging or the like occurs.

FIG. 2 is a view for explaining the details of the filter unit 20 shown in FIG. 1, (a) is an exploded view,
(B) is an assembly side sectional view, (c) is a front view, and as shown in (a), the filter unit 20 has one end opened and the other end provided with a hole 21a in the center. Bottom 2
1 ', and has an outer diameter slightly smaller than the inner diameter of the first cylindrical body 21. One end is opened and the other end is opened like the first cylindrical body. A second cylindrical body 22 having a bottom portion 22 ′ having a hole 22 a in the center thereof, and a porous sheet membrane 23.
As shown in (b) and (c), the first cylinder 21 and the second cylinder 22 are pressed and fixed by being sandwiched between the openings. In the filter unit 20, the cylindrical bodies 21 and 22 and the porous sheet 23 are integrally formed. When the porous sheet 23 is clogged, it can be used and picked up. , For example, 1μ, or
Those having a diameter of 2 μm are used, and those having different pore sizes are used in combination. As described above, the filter unit 20 may be used and picked up. Alternatively, the entire filter device 10 may be used and picked up.

[0009]

As apparent from the above description, according to the present invention, it is possible to (1) remove particles and the like contained in water supplied to an instrument. (2) When the instrument is not used, the bacteria that have entered the instrument do not enter the instrument hose, and the instrument hose can be kept clean. It is very sanitary because dead bodies such as bacteria attached to the inner wall of the hose are not injected into the oral cavity. (3) Since the filter device or the filter unit can be used for picking up, there is no need to clean the filter or the like, and it is very easy to replace the filter. There are advantages such as.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a main part of a filter device according to an embodiment of the present invention.

FIG. 2 is an exploded view (FIG. 2A), an assembled sectional view (FIG. 2B), and an assembled front view (FIG. 2C) for explaining an example of the filter unit according to the present invention.

[Explanation of symbols]

1… instrument, 2… instrument hose,
3, 4 ... packing, 10 ... filter device, 15 ... coupling, 20, 20a, 20b, 20c ... filter unit, 21, 22 ... cylinder, 23 ... porous sheet.

Claims (3)

(57) [Scope of request for utility model registration] 1. A dental instrument comprising: a dental instrument; an instrument hose for supplying water, air, etc. to the instrument; and a filter device for connecting the instrument with the instrument hose. A filter device configured to be detachable with respect to the instrument and the instrument hose , and further including a filter unit for filtering water supplied to the instrument from the instrument hose;
-The unit consists of a filter sterilizable porous sheet
A filter device characterized by being a run filter . 2. The filter device according to claim 1, wherein a plurality of membrane filters are mounted in a cascade in the filter device. 3. The filter according to claim 2, wherein the pore size of the membrane filter varies depending on the filter unit.
3. The filter device according to 2 .