JPH01181870A - Disinfector - Google Patents

Abstract

PURPOSE:To execute the sufficient disinfection in a short time by disinfecting the substance to be disinfected of a mounting stand with an ultraviolet ray and fog-shaped drugs with a bactericidal lamp to irradiate the ultraviolet ray arranged in a casing and a drug sprayer to exhaust the drugs in a fog shape. CONSTITUTION:A bactericidal lamp 11 is provided at the upper part of a wall surface in a casing 14. The bactericidal lamp 11 irradiates the ultraviolet ray to the substance 18 to be disinfected. A flat plate-shaped mounting stand 17 is provided at the lower direction of the bactericidal lamp 11. Under the mounting stand 17, a chemical reservoir tank (also called 'drug reservoir tank') 16 is provided, and a chemical (drug) 21 is reserved in the tank. A chemical sprayer 12 is provided at the side direction of the chemical reservoir tank 16 and the chemical 21 in the chemical reservoir tank 16 is made foggy and exhausted. A control panel 13 is provided at the outer wall of a casing. The control panel 13 controls a pump 19 and the bactericidal lamp 11. A timer is provided at the control panel 13 and the sterilizing time can be set.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a sterilizer for disinfecting medical instruments, trays, impressions and other materials.

11 Moxibustion 11 Conventionally, disinfectants using an ultraviolet irradiation method, a chemical spray method, or a heating and pressurization method have been used.

Since impressions are easily affected by temperature, pressure, moisture, etc., they cannot be sterilized by heating and pressurizing. On the other hand, when the impression is disinfected using only the ultraviolet ray irradiation method or the chemical spray method, the disinfection time is about 30 to 60 minutes.

However, such prolonged disinfection adversely affects the accuracy of the impression. Therefore, disinfection using ultraviolet irradiation or chemical spraying was not suitable for disinfecting or sterilizing impressions.

L12 and L Cautation - In view of the above-mentioned problems, the present invention aims to provide a sterilizer that can perform sufficient sterilization in an extremely short time compared to sterilization that uses an ultraviolet irradiation method or a chemical spray method alone. It is said that

R''11]L In order to achieve the above-mentioned object, the gist of the present invention is a sterilizer as set forth in claim 1.

The sterilizer according to the present invention for disinfecting the mouth (1) includes a casing, a germicidal lamp installed in the casing that emits ultraviolet rays, and a drug sprayer installed in the casing that sprays out a chemical in the form of a mist. The present invention is characterized in that it includes a mounting table on which an object to be sterilized is placed inside a casing, and the object to be sterilized placed on the mounting table is sterilized with ultraviolet rays and a mist-like chemical.

LJL The object to be disinfected placed on the mounting table is irradiated with ultraviolet rays emitted from the germicidal lamp, and the atomized chemical is sprayed onto the object from the chemical sprayer to disinfect the object. It will be done.

Friend 11 Hereinafter, embodiments of the sterilizer according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a sterilizer 10 according to the present invention.

Disinfector 10 includes a casing 14.

The casing 14 is made of semi-transparent synthetic resin and has a structure that does not allow ultraviolet rays to pass through to the outside.

A germicidal lamp 11 is provided at the upper part of the wall inside the casing 14. The germicidal lamp 11 irradiates the object 18 to be disinfected with ultraviolet light. The casing is provided with a door for taking in and out objects to be sterilized, but it is not shown.

A flat stage 17 is provided below the germicidal lamp 11. The mounting table has a double structure, top and bottom. The upper part has a grid-like structure, on which objects to be sterilized are placed. In FIG. 1, an impression is installed as the object 18 to be disinfected. The lower part is configured to collect used disinfectant into a waste liquid tank, but the waste liquid tank is omitted in the drawing. Note that other conventional types of stage may be used.

Below the loading table 17 is a chemical solution storage tank (also called a drug storage tank).
16 is provided, and a chemical solution (medicine) 21 is stored in the tank. A chemical liquid sprayer 12 is provided on the side of the chemical liquid storage tank 16, and is configured to spray the chemical liquid 21 in the chemical liquid storage tank 16 in the form of mist. FIG. 1 schematically shows a chemical liquid 15 in the form of mist.

As the chemical liquid sprayer 12, a conventionally used sprayer can be used. Here, we will briefly explain the outline. FIG. 2 is a conceptual diagram of the chemical liquid sprayer 12. The chemical solution storage tank 16 and the input side of the pump 19 are connected by a pipe. Further, the output side of the pump 19 and a number of nozzles 20 are connected by pipes. A chemical liquid 21 stored in a chemical liquid storage tank 16 is sent to a nozzle 20 by a pump 19, and the chemical liquid is sprayed out from the tip of the nozzle 20 in the form of a mist.

A plurality of chemical liquid storage tanks and pumps may be provided to eject different types of chemical liquids at the same time or at different times.

A control panel 13 is provided on the outer wall of the casing. The control panel 13 controls the pump 19 and the germicidal lamp 11.

The control panel 13 is provided with a timer, and the sterilization time can be set.

Next, Experimental Examples 1 to 3 in which the sterilization effects of the sterilizer according to the present invention and the conventional sterilizer were investigated will be explained.

Experimental Example 1 was conducted using a sterilizer according to the present invention, and sterilization was performed using a combination of ultraviolet irradiation and spraying of a chemical solution.

Experimental Example 2 is a conventional sterilizer, and sterilization was performed only by ultraviolet irradiation.

Experimental Example 3 is a conventional sterilizer, and sterilization was performed only by spraying a chemical solution.

The procedures of Experimental Examples 1 to 3 will be explained.

First, impressions were taken using alginate-based and agar-based impression materials, and the various bacterial strains shown in the 3train column of Tables 1 to 3 were smeared on the surface.

Next, the impressions on which the bacterial strains were smeared were sterilized for 5 minutes and 10 minutes using the respective sterilization methods described above. In Experimental Examples 1 and 2, the wavelength of ultraviolet rays was 254 nap, and the output was 10W.
Met. In Experimental Examples 1 and 3, three types of drugs were used: Handaway, Hibitene, and Beurax.

Impression before sterilization with bacterial strain smeared (equivalent to □ain)
The impression after sterilization for 5 minutes (5iin) and the impression after sterilization for 10 minutes (101Nn) were each washed with approximately 401 saline, and the saline was placed in a centrifuge tube and subjected to ultrasonic cleaning for 60 seconds. Rinse the centrifuge tube with 2000 rpIl.
After stirring for 0 minutes, the residue was cultured at 37°C or 28°C for 24 hours, and the number of colonies was then measured.

Changes in the number of colonies in Experimental Examples 1 to 3 are shown in Tables 1 to 3. When the number of colonies is O, it indicates that sterilization has been sufficiently performed.

Looking at Table 1, in the case where 3.5 ubtilis was smeared on an agar-based impression, if the sterilization time was 5 minutes, the sterilization was not sufficient. Under other conditions, 5 minutes of sterilization time was sufficient for sterilization, and the number of colonies was O.

Similarly, in Table 1, when the sterilization time was 10 minutes, the number of colonies was O under all conditions, and sterilization was completed.

Table 2 shows that when the bacterial strain was smeared on an agar-based impression, sterilization was not achieved satisfactorily even after 10 minutes of sterilization.

Looking at Table 3, in the case of certain combinations of drugs and bacterial strains,
It can be seen that even sterilization for 10 minutes did not provide a sufficient effect.

As described above, in the conventional sterilization using only ultraviolet irradiation or spraying of a chemical solution (Table 29 and Table 3), a sufficient effect could not be obtained within a sterilization time of 10 minutes.

On the other hand, by using the sterilizer according to the present invention that uses both ultraviolet irradiation and chemical spray, sufficient sterilization was achieved within 10 minutes (Table 1). Moreover, sufficient effects were obtained using any of the commonly used drugs, Handaway, Hibitene, and Vurax.

As described above, by using the sterilizer of the present invention,
It is possible to obtain an effect that is greater than the simple addition of the conventional sterilizing effect of ultraviolet irradiation alone and the sterilizing effect of chemical liquid spraying alone.

That is, according to the present invention, sterilization, which conventionally took about 30 to 60 minutes, can be completed in about 10 minutes.

Note that the sterilizer of the present invention is not limited to the above-mentioned embodiments.

For example, a chemical solution storage tank and a pump may be provided outside the casing. Further, the drug sprayer may be configured with two sets of nozzles that send air and a drug solution. Alternatively, a fan may be provided within the casing to circulate the atomized chemical solution.

11 animals 11 Since the sterilizer according to the present invention uses a combination of chemical spray and ultraviolet light, the sterilization time is short (for example, 10 minutes). Therefore, sufficient sterilization can be performed without deforming the impression material, and it can be applied to sterilization of both alginate-based and agar-based impression materials.

As mentioned above, not only can impressions be sterilized in a short time, but instruments, trays, etc. can also be sterilized in a short time.

Furthermore, since the stage can be made larger, many items such as impressions, instruments, trays, etc. can be sterilized at the same time.

In addition, since it uses not only the ultraviolet ray method but also the chemical spray method, it is possible to constantly bring new chemicals into contact with impressions, instruments, and trays, and in this case, the disinfection effect will not decrease.

Therefore, you can freely choose any drug currently available on the market.
Moreover, a sufficient sterilizing effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a sterilizer according to the present invention, and FIG. 2 is a conceptual diagram of a chemical liquid sprayer. 10...Disinfector 11...Bactericidal lamp 12...Medical sprayer 17...Mountain table 18...Impression agent Patent attorney 1) Side micro-1 [This invention: Ultraviolet irradiation and Combination of chemical spraying 1 Table-2 [Conventional example: Only ultraviolet irradiation] Table-3 [Conventional example: Only chemical spraying] Figure 1

Claims (1)

[Scope of Claims] A casing, a germicidal lamp installed in the casing that irradiates ultraviolet rays, a drug sprayer installed in the casing that sprays a chemical in the form of a mist, and an object to be disinfected placed in the casing. A sterilizer is characterized in that it is equipped with a mounting table for placing objects, and sterilizes objects to be disinfected placed on the mounting table using ultraviolet light and a mist of a chemical agent.