JP3180140B2 - Sterilizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizing apparatus used to prevent reverse contamination from a terminal of a sterilized water, liquid, gas or the like, for example.

[0002]

2. Description of the Related Art For example, when performing surgery or the like in a hospital, so-called sterile water is used. In this case, such sterile water is used by storing water that has been sufficiently sterilized in advance, for example, in a closed tank. Therefore, for example, in a closed tank, the sterility of water can be sufficiently maintained.

However, in such an apparatus, the terminal using the sterile water is open to the outside air. For this reason, bacteria may invade from this end portion, and in particular, may propagate near the on-off valve that opens and closes the flow path of the sterile water, and may cause reverse contamination.

[0004]

The problem to be solved is that when handling a sterilized fluid, bacteria enter from the end of the fluid and propagate near the on-off valve that opens and closes the flow path. The risk of reverse contamination.

[0005]

According to the present invention, there is provided an on-off valve 20 for opening and closing a flow path of a sterilized fluid, and a pipe on the inflow side of the on-off fluid of the on-off valve 20 is made of a sterilizing wire permeable material. And a pipe on the outflow side of the fluid is made of pipes 24 and 26 made of a sterilizing ray-permeable material.
The downstream side of the outflow side pipe is communicated with the outside.
And a high position portion which is higher than the on-off valve 20 is formed on the upstream side of the outflow side pipe so as to provide a fluid reservoir for retaining the fluid between the on-off valve 20 and the on-off valve 20,
The sterilizing apparatus is characterized in that the sterilizing line irradiating means (ultraviolet lamp 11) is arranged near these pipes 23, 24, 26.

[0006]

According to this, since sterilization is performed in the vicinity of the on-off valve that opens and closes the flow path, bacteria invading from the end are sterilized here, and reverse contamination can be prevented well.

[0007]

FIG. 1 is a perspective view showing the entire apparatus. In this figure, the entire device is a base 1 fixed to a wall or the like,
The base 1 includes a cover 2 that covers the front surface 10. The front surface 10 of the base 1 is provided with an ultraviolet lamp 11 as a sterilizing line irradiation means, and the front surface 10 of the base 1 is an ultraviolet reflector. The operation switch 12 and the breaker 13 of the ultraviolet lamp 11 are provided on the upper part of the base 1, and a transparent cover 14 for covering the operation switch 12 and the breaker 13 is provided. Although not shown, a ballast for turning on the ultraviolet lamp 11, a power supply circuit, a connection, and the like are provided inside the base 1, and these are screwed to an electric circuit board.

On the inner side of the lid 2, there are provided an on-off valve 20 for opening and closing the flow path, and pipes on its inflow side and outflow side.
That is, reference numeral 21 denotes an inflow portion to which a pipe from a tank (not shown) storing, for example, sterile water is connected, and the inflow portion 21 is provided by welding through the side surface of the lid portion 2. One end of the stainless steel elbow 22. The pipe is bent upward by the stainless elbow 22, and an opening / closing valve 20 is provided above the stainless elbow 22 via a pipe 23 made of a material that transmits ultraviolet (sterilizing ray).

An elbow 25 is provided above the on-off valve 20 via a pipe 24 made of an ultraviolet-permeable material.
The pipe is bent laterally by the elbow 25, and a resin pipe 26 made of an ultraviolet-transmissive material is connected to the elbow 25. Further, the pipe is bent downward by the resin pipe 26, and the other end of the resin pipe 26 is connected to a fixing joint part 27 provided through the lower surface of the lid 2. The other end of the fixing joint part 27 is connected to the outflow part 28.
It is said. Further, an adjustment handle 29 of the on-off valve 20 is provided outside through the lid 2 (see FIG. 2). Note that the handle 29 may be a cock.

Therefore, in this apparatus, the sterile water flowing into the inflow section 21 from the tank (not shown) is supplied to the on-off valve 20.
Through the outlet 28. By turning the adjustment handle 29, the flow rate of the sterile water can be adjusted. The pipe 24 is located above the on-off valve 20.
And connected to the upper end of the pipe 24.
Connect the pipe 26 to the elbow 25 and update the pipe from sideways.
By bending downward, the position higher than on-off valve 20
A high position portion is formed. And this high
By providing the mounting portion, the fluid is retained between the
A fluid reservoir for retaining is provided.

The lid 2 is fixed to the base 1 with upper and lower slide hinges 3a and 3b (see FIG. 3) and so-called patch locks 4a and 4b. In this fixed state, the ultraviolet lamp 11 is arranged so as to be located in a range surrounded by pipes such as pipes 23 to 26.

Therefore, in this device, the lid 2 is connected to the base 1.
By turning on the ultraviolet lamp 11 in a state where the ultraviolet lamp 11 is fixed, the ultraviolet light generated by the ultraviolet lamp 11 is irradiated to the pipes such as the pipes 23 to 26. In this case, since these pipes 23 to 26 are formed of an ultraviolet transmitting material, the irradiated ultraviolet rays are transmitted through the pipes 23 to 26, and the water in the pipes 23 to 26 and the pipe 2
Sterilization of the inner surface of 3 to 26 is performed.

Thus, according to the above-described apparatus , the pipes 23, 24 and 24 near the on-off valve 20 for opening and closing the flow path are provided.
Since the sterilization is performed in the resin pipe 26 , the bacteria invading from the end portion (outflow portion 28) are sterilized here, and reverse contamination can be prevented well.

That is, in this device, a fluid reservoir is provided above the on-off valve 20, and water always stays in the fluid reservoir, and the water is irradiated with ultraviolet rays. Thus, this stagnant water is always sterilized and the outflow 28
Bacteria invading from here are sterilized here and can prevent reverse contamination well.

In the above apparatus, the ultraviolet lamp 1
1 is not limited to one, and a plurality may be provided. The apparatus may be provided with only the ultraviolet lamp 11 and a power supply circuit or the like for lighting the ultraviolet lamp 11 may be provided separately from the apparatus. The disinfecting line is not limited to ultraviolet rays, but may be infrared rays or far infrared rays. Further, the light source of the sterilizing line may be provided at another place, and may be introduced into the apparatus from there through an optical fiber or the like.

As a means for irradiating the sterilizing line, a semiconductor laser can be used. That is, in FIG. 4, light-emitting portions 30 a to 30 d of the semiconductor laser are provided at important positions on the front surface 10 of the base 1. Then, laser beams from these are irradiated on the pipes 23 to 26. With this, the same effect as in the case of the above-described ultraviolet lamp 11 can be obtained. When laser light is used, the lid 2
A safety circuit may be provided such that the laser beam emission stops when the shutter is opened.

In this figure, a solenoid valve is employed as the on-off valve 20, so that the opening and closing of the flow path can be automated. In that case, the device shown in the figure controls the electromagnetic valve using, for example, the optical sensor 31. In addition, the control of the solenoid valve uses a temperature sensor to detect human body temperature,
The control can be performed by voice or using a foot switch or the like.

Further, in the above-described apparatus, the elbow 25 and the fixing joint part 27, and the pipes before the inflow portion 21 and after the outflow portion 28 are made of, for example, fluororesin or the like whose inner surface is strong against germicidal lines and high in reflectance of germicidal lines ( Strong against the wavelength of other germicidal rays,
It is not necessary to use a fluororesin as long as it is close to white or transparent, but hardly emits the light that has entered inside. Accordingly, the sterilizing line incident from the pipes 23 to 26 can be reflected inside the optical fiber and proceed like an optical fiber, so that the sterilizing line can be uniformly irradiated to the inside thereof. Note that the on-off valve 20, the elbow 25 and the fixing joint part 27 can be made of an ultraviolet-permeable material.

The above-mentioned apparatus is not limited to the use of sterile water in hospitals, but also includes the use of ultrapure water in semiconductor lines, pure water lines in plating factories, and RO water or sterile water in pharmaceutical companies. Can be used to prevent reverse contamination. The fluid to be treated can be applied not only to liquid such as water but also to gas.

[0020]

Effects of the Invention According to the present invention, a pipe in which both the inflow side and the outflow side of the fluid on-off valve for opening and closing the <br/> passage of sterilized fluid piping is composed of bactericidal ray transparent material It is formed
At the same time, a high position is provided in the outflow side
A fluid reservoir for retaining fluid is provided at the outlet side.
Therefore, sterilization is performed in the vicinity of the on-off valve, and bacteria invading from the end are sterilized here, so that reverse contamination can be prevented well.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an example of a sterilizer according to the present invention.

FIG. 2 is a diagram for explaining this.

FIG. 3 is a diagram for explaining this.

FIG. 4 is a perspective view illustrating another example of the sterilization apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 10 Front 11 Ultraviolet lamp 12 Operation switch 13 Breaker 14 Transparent cover 14 2 Lid 20 On / off valve 21 Inflow part 22 Stainless steel elbow 23 Pipe 24 Pipe 25 Elbow 26 Resin pipe 27 Fixing joint part 28 Outflow part 29 Adjustment handle 3a , 3b Slide hinge 4a, 4b Patchin lock

Claims (1)

(57) [Claims] An on-off valve for opening and closing a flow path of a sterilized fluid is provided, and a pipe on an inflow side of the fluid of the on-off valve is formed of a pipe made of a sterilizing line-permeable material.
The pipe on the outflow side of the fluid is a pipe made of a sterilizing line permeable material, and the downstream side of the outflow side pipe communicates with the outside.
A high position portion which is higher than the on-off valve is formed on the upstream side of the outflow-side pipe so as to provide a fluid reservoir for retaining the fluid between the on-off valve and the on-off valve. A disinfection device for irradiating the disinfection line.