JP3083746B2 - Sewage collection structure in vertical high-pressure steam 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 wastewater collecting structure in a vertical high-pressure steam sterilizer.

[0002]

2. Description of the Related Art As shown in FIG. 10, a vertical high-pressure steam sterilizer 70 has a chamber 71 whose upper part is open. Then, the object A to be sterilized is stored in the basket-like (net-like) object storage container 72, the storage container 72 is loaded into the chamber 71, and the opening of the chamber 71 is closed by the lid 73.
The high-pressure steam is generated in the chamber 71, and the object A to be sterilized is sterilized with the high-pressure steam.

In such a vertical high-pressure steam sterilizer 70, when the object A to be sterilized is stored directly in the container 72 for storing the object to be sterilized, the object A to be sterilized, for example, a petri dish,
The culture medium, blood, and the like attached to the microplate, flask, pipette tip, blood sampling syringe, and the like are boiled and dissolved by high-pressure heating steam, flow out to the outside through the hole of the container 72, and provided on the bottom surface of the chamber. Drain hole 74
Alternatively, there is a possibility that the air vent hole provided on the side surface, the hole for a safety valve, or the like 75 may be blocked.

Therefore, conventionally, as shown in FIG. 10, the objects A to be sterilized are placed in a bag 76 for sterilization, and the cultivation medium, blood, and the like that have flowed out are collected in the bag 76. 71 was prevented from flowing out.

[0005] However, if the object A to be sterilized contains a sharp object such as a syringe needle, the bag 76 may be broken and the liquid substance (sewage) inside may flow out into the chamber. In some cases, the area around the waste collection point and the processed material input port of the waste transport vehicle may be soiled.

Accordingly, the applicant has previously provided a container for storing items to be sterilized in which the lower side wall and bottom wall are made non-perforated and a sewage reservoir is defined therein (Japanese Utility Model Publication No. 43797/1993). According to the container for storing items to be sterilized, the wastewater containing the adhered substance of the object to be sterilized and boiled is stored at the bottom of the container, so that the substance attached to the object to be sterilized does not flow into the chamber.

[0007]

However, in such a container for storing objects to be sterilized, it is possible to prevent the outflow of sewage into the chamber, but the object to be sterilized stored in the lower part of the container is in a state of being immersed in the sewage. Therefore, when the object to be sterilized is taken out of the container, there is a possibility that the surroundings may be stained by sewage attached to the object to be sterilized.

Accordingly, an object of the present invention is to provide a vertical high-pressure steam sterilizer capable of reliably separating sewage containing adhering substances from an object to be sterilized and discarding the object to be sterilized without adhering sewage. An object of the present invention is to provide a wastewater collecting structure in a vessel.

[0009]

In the sewage collecting structure of the vertical high-pressure steam sterilizer according to the present invention, a sewage passage hole is formed in a lower part of a container for storing an object to be sterilized therein. A waterproof bag is provided so as to cover the bottom of the container to be sterilized at an interval from the bottom, and the liquid flowing out of the sewage passage hole is received by the bag.

According to the present invention, sewage that is boiled and dissolved by high-pressure steam and contains deposits flowing out of the material to be sterilized is
It falls into the bag from the sewage passage hole of the container to be sterilized, and is stored in the bag. Therefore, the material to be sterilized is completely separated from the wastewater. After the sterilization operation, the container to be sterilized is removed from the chamber of the sterilizer, and the object to be sterilized is discarded at a predetermined place. Simultaneously or thereafter, the bag is removed from the chamber and the sewage in the bag is discarded elsewhere.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 conceptually show a first embodiment of a wastewater collecting structure in a vertical high-pressure steam sterilizer according to the present invention.

As shown in FIG. 2, the vertical high-pressure steam sterilizer has a chamber 2 in an apparatus main body 1, and the chamber 2 has an opening 3 at an upper part. And chamber 2
A drain hole 4 is formed on the bottom surface, and an air vent hole 5 is formed on the side surface. In addition, at the bottom of the chamber 2, a cage 6 is arranged, and below the cage 6, a heater 7 is arranged.

The vertical high-pressure steam sterilizer is provided in
An opening / closing lid 8 is provided at the upper part of the camera. And this opening / closing lid 8
In the closed state, covers the opening 3 of the chamber 2 and
The pressure of the steam generated inside is maintained at a high pressure.

The container 10 to be sterilized employed in the vertical high-pressure steam sterilizer of this embodiment has a cylindrical shape with a bottom having a mesh plate or a punching plate made of a non-rusting material such as stainless steel, aluminum or synthetic resin. Is formed. At the upper end of the container 10 to be sterilized, locking pieces 11 are provided outward at a plurality of locations around the container. Further, a handle 1 is provided at the upper end of the container 10 for storing items to be sterilized.
2 are provided.

The vertical high-pressure steam sterilizer of this embodiment has a bottomed cylindrical outer case 20 for accommodating the container 10 for storing the object to be sterilized. This outer case 20
Is formed of a net material made of a hardly rusting material such as stainless steel, aluminum, or synthetic resin, and has a sufficient depth with respect to the depth of the container 10 to be sterilized. A handle 21 is provided at the upper end of the outer case 20.

The vertical high-pressure steam sterilizer of this embodiment has a bag 30 having high heat resistance and waterproofness.
The bag 30 has a sufficient depth for accommodating the container 10 for storing items to be sterilized.

In this high-pressure steam sterilizer, water is stored in the chamber 2. On the other hand, the bag 30 is loaded in the outer case 20, and the opening edge of the outer bag is put on the opening edge of the outer case 20. Then, the outer case 20 is housed in the chamber 2. Next, the container 10 for storing the object to be sterilized is stored in the bag 30. In this state, the bag 30 is
As shown in (2), the upper end 30a is sandwiched between the upper end 20a of the outer case 20 and the locking piece 11 of the container 10 to be sterilized. The object to be sterilized (a petri dish in the embodiment) A is stored in the container to be sterilized 10 before or after the container to be sterilized 10 is stored in the chamber 2.

After the cover 8 is closed, the heater 7 is heated. Then, high-pressure steam is generated in the chamber 2, and the steam rises from the upper opening to store the container 1 to be sterilized.
0, and is filled in the container 10 to be sterilized.
The object A to be sterilized is sterilized by the saturated steam. At this time, the culture medium, blood, etc. adhering to the material to be sterilized A dissolve and flow out, and they fall into the bag 30 from the mesh (sewage passage hole) on the lower side wall or the bottom wall of the container for storing the material to be sterilized 10. I do.

When the sterilization operation has been completed in this way, the open / close lid 8 is opened, and the outer case 20 is taken out of the chamber 2 by holding the handle 21. Then, the container 10 to be sterilized is taken out of the outer case 20, and the object A to be sterilized is discarded at a waste accumulation place, a treated material inlet of a waste transporter, or the like. Further, the bag 30 is taken out of the outer case 20, and the waste water accumulated in the bag 30 is disposed at an appropriate place.

FIGS. 4 to 6 conceptually show a second embodiment of the wastewater collecting structure in the vertical high-pressure steam sterilizer according to the present invention.

The container 40 to be sterilized employed in the vertical type high-pressure steam sterilizer is formed in a cylindrical shape with a bottom by a mesh plate or a punching plate made of a non-rusting material such as stainless steel, aluminum or synthetic resin. ing. At the upper end of the container 40, clamps 41 are provided outward at a plurality of locations around the container. Clamp 4
1, as shown in FIG. 6 (a), the base of the fishhook-shaped piece 42 is
It is supported by the inner surface of. A projection 42a is formed on the abdomen of the hook-shaped piece 42. As shown in FIG. 6B, when the hook-shaped piece 42 is rotated, the projection 42a Abutting against the inner surface of the upper edge 40a, and pulls the hook-shaped piece 42 inward of the container 40 to be sterilized.
In addition, legs 44 are provided below the container 40 to keep the bottom 40b of the container 40 at an appropriate distance from the stern 6. Further, a handle 45 is provided at the upper end of the container 40 for storing items to be sterilized.

The bag 30 employed in the vertical high-pressure steam sterilizer of this embodiment is the same as that of the above embodiment.

In the vertical type high-pressure steam sterilizer of this embodiment, a container 40 to be sterilized is accommodated in the bag 30, and the upper end 30a of the bag 30 is, as shown in FIG. 42
Between the distal end portion 42b and the outer surface of the upper edge 40a of the container 40 to be sterilized. Then, as shown in FIG. 5, the container to be sterilized 40 is housed in the chamber 2 together with the bag 30. The object to be sterilized (the petri dish in the embodiment) is stored in the container to be sterilized before or after the object to be sterilized is stored in the chamber 2.
A is stored.

In this high-pressure steam sterilizer, as described in the first embodiment, the culture medium, blood, etc. attached to the material A to be sterilized are boiled and dissolved by high-pressure steam for sterilization. Then, it falls into the bag 30 from the mesh (sewage passage hole) of the lower part and the bottom part 40b of the container 40 to be sterilized.

When the sterilization operation has been completed in this way, the opening / closing lid 8 is opened, and the storage container 40 together with the bag 30 is taken out of the chamber 2 with the handle 45. Then, the clamp 41 is opened, and the bag 30 is removed from the container 40 to be sterilized. Then, the sewage collected in the bag 30 is discarded to an appropriate place, and the container 40 to be sterilized is carried to a treatment plant or the like, and the object A to be sterilized is discarded there.

FIGS. 7 to 9 show a third embodiment of the wastewater collecting structure in the vertical high-pressure steam sterilizer according to the present invention.

In this vertical high-pressure steam sterilizer, a step portion 51 is formed at the opening edge of the container 50 for storing the object to be sterilized. The vertical high-pressure steam sterilizer includes a ring-shaped spring 52 fitted to the step 51.

The container 50 to be sterilized used in this high-pressure steam sterilizer is made of a net plate or a punching plate made of a non-rusting material such as stainless steel, aluminum, or synthetic resin, similarly to the above-described embodiments. It is formed in a bottomed cylindrical shape. The bottom 50a of the container 50 is placed under the container 50 to be sterilized.
In order to keep an appropriate distance from the camera, a leg 53 is provided. Further, a handle 54 is provided on the upper edge of the container 50 for storing the object to be sterilized.

In this high-pressure steam sterilizer, the container 50 for storing the object to be sterilized is accommodated in the bag 30, and the ring-shaped spring 51 is opened with the upper edge 30 a of the bag 30 facing the container 50 for storing the object to be sterilized. Both ends are pinched and narrowed, and the upper edge 30a of the bag 30
Insert the ring-shaped spring 5
As shown in FIG. 8, the step 5 of the container 50
One is fitted. Therefore, the bag 30 has its upper edge 30a formed by the ring-shaped spring 52 by the container 5 to be sterilized.
It is kept at 0.

In such a state, the leg 53 of the container 50 for the object to be sterilized pushes down the bottom 30b of the bag 30, and the bottom 30b is seated on the bed 6.

In the high-pressure steam sterilizer of this embodiment, similarly to the above-described embodiment, the object to be sterilized (a petri dish in the embodiment) is stored before or after the container 50 is stored in the chamber 2. A is stored.

Also in the high-pressure steam sterilizer of this embodiment, water is stored in the chamber 2 and the
Is closed, the heater 7 is heated. Then, high-pressure steam is generated in the chamber 2 and the steam rises and penetrates into the container 50 to be sterilized through the upper opening. Then, the object A to be sterilized is sterilized by the convection of the saturated steam. At this time, the culture medium, blood, and the like adhering to the material to be sterilized A are boiled and dissolved and flow out, but they fall into the bag 30 from the bottom 50a of the container 50 for the material to be sterilized.

When the sterilization operation is completed in this way, the lid 8 is opened, and the container 50 to be sterilized is taken out of the chamber 2 with the handle 54 held. Then, the ring-shaped spring 52 is narrowed, the spring 52 is removed from the container 50 to be sterilized, and the upper edge 30a of the bag 30 is opened from the container 50 to be sterilized. Then, the container 50 to be sterilized is taken out of the bag 30, the container 50 for storing the object to be sterilized is carried to a treatment plant, and the object A to be sterilized therein is discarded there. Further, the bag 30 is carried to an appropriate place, and the waste water inside is discarded there.

In the above-described embodiment, the bag 30 is locked between the storage containers 40 and 50 or between the storage container 10 and the outer case 20. Can be locked in the chamber 2. In this case, it is necessary to form a steam passage in the upper part of the bag 30 or the upper edge of the chamber 2 so that the generated high-pressure steam can enter the bag 30 from the upper opening of the bag 30. Further, in this case, there is a possibility that the bag 30 may block the air vent hole 5 or the like opened in the chamber 2. Therefore, it is preferable to use the apparatus main body 1 in which the net plate 9 and the like are disposed so as to cover the air holes 5 and the like along the inner peripheral surface of the chamber 2 as shown in FIG.

In the above embodiment, the bag 30 is held at the upper ends of the containers 10, 40, 50 to be sterilized.
In the sewage collecting structure of the vertical high-pressure steam sterilizer of the present invention, the holding position of the bag 30 is not limited to the above-described embodiment. For example, the bag 30 is disposed so as to cover only the lower part of the container to be sterilized. May be.

In each of the above embodiments, the storage containers 10, 40, and 50 are formed of a mesh plate, but may be formed of a non-perforated plate. However, in this case, the bottom wall of the container to be sterilized requires a sewage passage hole.

[0037]

According to the wastewater collecting structure of the vertical high-pressure steam sterilizer of the present invention, the container for storing the object to be sterilized and the bag for storing the wastewater are separated from each other. Therefore, the object to be sterilized and the sewage can be easily separated and disposed at a desired place.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a tool employed in a first embodiment of a wastewater collecting structure in a vertical high-pressure steam sterilizer according to the present invention.

FIG. 2 is a cross-sectional view conceptually showing a first embodiment of a wastewater collecting structure in the vertical high-pressure steam sterilizer according to the present invention.

FIG. 3 is an enlarged partial cross-sectional view showing a bag locked state in the wastewater collecting structure shown in FIG. 2;

FIG. 4 is an exploded perspective view showing a tool used in a second embodiment of the wastewater collecting structure in the vertical high-pressure steam sterilizer according to the present invention.

FIG. 5 is a sectional view conceptually showing a second embodiment of a wastewater collecting structure in the vertical high-pressure steam sterilizer according to the present invention.

FIG. 6 is an enlarged partial cross-sectional view showing a locked state of the bag in the wastewater collecting structure shown in FIG.

FIG. 7 is an exploded perspective view showing a tool used in a third embodiment of the wastewater collecting structure in the vertical high-pressure steam sterilizer according to the present invention.

FIG. 8 is a sectional view conceptually showing a third embodiment of a wastewater collecting structure in a vertical high-pressure steam sterilizer according to the present invention.

9 is an enlarged partial cross-sectional view showing a locked state of a bag in the wastewater collecting structure shown in FIG.

FIG. 10 is a cross-sectional view showing a conventional vertical high-pressure steam sterilizer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Chamber 3 Upper opening 10 Sterilized object storage container 11 Locking piece 12 Handle 20 Outer case 20a Upper edge 21 Handle 30 Bag 30a Upper edge 30b Bottom 31a Side wall 31b Bottom wall 40 Sterilized object storage container 40a Upper edge 41 Clamp 42 Fishing hook 42a Projection 43 Pin 50 Sterilized object storage container 51 Step 52 Ring-shaped spring 53 Leg 54 Handle A Sterilized object

Claims (1)

(57) [Claims] An object to be sterilized is stored in a container for storing the object to be sterilized, and the container for storing the object to be sterilized is loaded into the chamber from an upper opening of a chamber formed in the apparatus main body, and the chamber is filled with high-pressure steam. Then, in the sewage collection structure in the vertical high-pressure steam sterilization for sterilizing the object to be sterilized, a sewage passage hole is formed at a lower portion of the container for storing the object to be sterilized, and the bottom of the container for storing the object to be sterilized is removed. With a gap from the bottom
A drainable bag disposed in the vertical high-pressure steam sterilizer, wherein a waterproof bag is provided so as to cover the wastewater, and the liquid flowing out of the wastewater passage hole is received by the bag.