CN207276612U - A kind of culture dish - Google Patents

Abstract

This utility model discloses a culture dish, including a lid and a dish body. The inner surface of the lid is coated with a plasma-sprayed film, the outer wall of the lid opening has a frosted area, the inner wall of the lid opening has an internal thread, and the outer wall of the dish body opening has an external thread that matches the internal thread on the lid. The outer surface of the bottom of the dish body has a frosted area. This utility model solves the problems of existing technologies, such as lack of accidental opening protection mechanism, condensation causing inconvenience or damage to the culture, difficulty in labeling, and poor air permeability.

Description

a petri dish

technical field

The utility model belongs to the technical field of medical microbe engineering, in particular to a culture dish.

Background technique

Petri dishes are laboratory utensils for animal and plant cells and microorganisms. They are composed of a flat disc-shaped dish cover and a dish body. They are usually made of glass or plastic. Because glass products are relatively easy to break, most of them are used now. Plastic petri dish. But there are following inconveniences in its use:

1. The structure of the existing common petri dish cover body is independent, and there is no protection mechanism for external effects that can make the petri dish open accidentally. If the researcher accidentally opens the lid of the dish or even knocks over the petri dish, it will not only pollute the petri dish with bacteria, affect the experimental results, delay the experiment process, but also cause the bacteria in the petri dish to come out and contaminate the surrounding area. surroundings;

2. When the existing ordinary petri dish is used for bacterial culture, the lid of the dish often forms a large area of dense and fine water droplets on the inner surface due to water vapor condensation. For a long time, larger drops of water are easily dropped to the surface of the culture medium by vibration, and the colonies are scattered or mixed, which affects the final experimental results;

3. During the use of the petri dish, it is often necessary to mark or number different samples. The existing marking method is usually to write directly on the surface of the petri dish with a marker pen, but because the outer surface of the dish is smooth, it is difficult to write or the handwriting often appears It hinders the researcher's preliminary observation of the culture results; and for many reusable petri dishes, the writing of the marker pen will also cause trouble for cleaning.

4. In order to prevent pollution and accidental separation of the vessel, the existing common culture vessel is often sealed with a sealing film to isolate the environment inside and outside the culture vessel, but at the same time, the lack of air in the culture vessel causes the growth of the culture material to be affected.

Therefore, in the long-term culture process of animal and plant cells and microorganisms using conventional petri dishes, the above problems must be solved.

Contents of the invention

The technical problem to be solved by the utility model is: to provide a petri dish, which can solve the problems of lack of accidental opening protection mechanism, condensed water, difficult marking and poor air permeability existing in the prior art.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A culture dish, comprising a dish cover and a dish body, the inner surface of the dish cover is provided with a plasma spray film, the outer wall of the mouth of the dish cover is provided with a frosted area on the outer wall, the inner wall of the mouth of the dish cover is provided with internal threads, and the dish body The outer wall of the mouth is provided with external threads matching the internal threads on the lid of the dish; the outer surface of the bottom of the dish is provided with a bottom frosted area.

Wherein, during the manufacturing process of the dish cover, plasma spraying is carried out to the inner surface of the dish cover to form a layer of plasma spraying film, which is a hydrophilic film, which can absorb the water vapor generated during attachment culture, so that it is not easy to produce water droplets and reduce Hazards from water drops. The inner thread and the outer thread can better combine the lid and the body of the vessel to prevent accidental opening, and because there is a gap in the combination process, it can be ventilated, and the problem of poor air permeability can be better solved. The frosted area on the outer wall plays the role of better writing marks and anti-slip when opening the lid; the frosted area on the bottom plays the role of anti-slip.

Preferably, the petri dish is a plastic petri dish. The transparent structure made of polyethylene is not only conducive to the observation during the experiment, but also has a high melting point and good transparency, and can be sterilized repeatedly. More importantly, its surface can be treated by plasma spraying process to form a hydrophilic membrane structure, which plays the role of waterproof and water absorption.

Preferably, the plasma sprayed film is a plasma sprayed film treated with RF-Ar plasma. Generally, PE film is used.

Preferably, there are multiple frosted areas on the outer wall, which are evenly distributed on the outer wall of the mouth of the dish lid.

Preferably, there are multiple bottom frosted areas, which are evenly distributed on the outer surface of the bottom of the dish.

Preferably, there are multiple internal threads and external threads, which are evenly distributed on the inner wall of the mouth of the vessel cover and the outer wall of the mouth of the vessel body.

As an improvement, a label slot is provided on the outer wall of the mouth of the vessel lid. This facilitates label logging and facilitates label replacement.

As an improvement, the center of the vessel cover is provided with a vent hole, and the vent hole is composed of an air filter device.

In this way, the air permeability of the whole petri dish is better, and it is suitable for culturing microorganisms or tissues with strict gas requirements.

Preferably, the air filter device is composed of an air filter membrane and a pressure membrane; the pressure membrane is two pieces, both of which are provided with a number of orifices, which are respectively pasted on both sides of the air filter membrane and extended to the outer periphery of the air hole. Dish cover surface.

Preferably, the air filter membrane is a cellulose acetate membrane.

Owing to adopting above-mentioned technical scheme, the beneficial effect of the utility model is:

1. The ion-sprayed membrane is a hydrophilic membrane, which can absorb the water vapor generated during attachment culture, so that it is not easy to produce water droplets and reduce the harm caused by water droplets;

2. The inner thread and outer thread can make the lid and the dish body better combined, prevent accidental opening, and better solve the problem of poor ventilation;

3. The frosted area on the outer wall plays a good role in writing marks and anti-slip when opening the lid. If a further design is adopted, that is, a label slot is provided on the outer wall of the mouth of the dish body, it will be easier to mark; the frosted area on the bottom plays a role Anti-slip effect;

4. The design of the ventilation holes is specially designed for cultures with strict gas requirements, and general cultures can also be used.

In a word, the utility model solves the problems existing in the prior art, such as lack of accidental opening protection mechanism, inconvenient observation caused by condensed water or damage to cultures, difficulty in marking, and poor air permeability.

Description of drawings

Fig. 1 is a side view structural representation of the utility model;

Fig. 2 is the structural representation of looking up of the utility model;

Fig. 3 is a top view structural schematic diagram of the improved solution of the utility model;

In the figure, 1-dish cover; 2-dish body; 3-plasma sprayed film; 4-outer wall frosted area; 5-internal thread; 6-external thread; 7-bottom frosted area; 8-air vent; 9-air filter film; 10-press film; 11-label slot.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, further set forth the utility model.

As shown in Fig. 1, Fig. 2 and Fig. 3, a petri dish includes a dish cover 1 and a dish body 2, the inner surface of the dish cover 1 is provided with a plasma spray film 3, and the outer wall of the dish cover 1 mouth is provided with two An outer wall frosted area 4 is symmetrically distributed on the outer wall of the mouth of the dish cover 1, and is used for marking or anti-slip when unscrewed; the inner wall of the mouth of the dish cover 1 is provided with an internal thread 5, and the outer wall of the mouth of the dish body 2 is provided. There are external threads 6 that match the internal threads 5 on the dish cover 1; there are three pairs of internal threads 5 and external threads 6, and the threaded parts and non-threaded parts are evenly distributed, each forming an angle of 60°C with the center of the circle. In this way, the petri dish can be opened or closed only by rotating 60°C; the outer surface of the bottom of the dish body 2 is provided with a bottom frosted area 7, and the bottom frosted area 7 can be set to multiple, or the entire bottom can be set as a frosted area, mainly It is anti-skid.

For the petri dish used when cultivating microorganisms or tissues with higher air permeability requirements, the center of the dish cover 1 is provided with an air vent 8, and the air vent 8 is made up of an air filter, and the air filter consists of an air filter membrane 9 (in the dotted line of Fig. 3 region) and the pressure membrane sheet 10; the pressure membrane sheet 10 is two pieces, which are provided with a number of orifices, which are respectively pressed on both sides of the air filter membrane 9, and extend to the surface of the dish cover outside the vent hole; like this, the pressure membrane The sheet 10 can completely seal the ventilation holes 8, and no gaps can be left to cause bacterial contamination.

For better labeling, a label slot 11 may also be provided on the outer wall of the mouth of the dish cover 1 . This facilitates label logging and facilitates label replacement.

When the utility model is in use, first open the lid 1 of the culture dish, pour a certain amount of culture medium into the sterilized culture dish, and after the culture medium is cooled, the substances to be cultivated can be sprayed onto the surface of the culture medium , then screw the dish cover 1 onto the dish body 2, and then mark with a marker pen on the outer wall frosted area 4 set on the outer wall of the mouth of the dish cover 1 or directly paste the prepared label; or in the label slot 11 Insert the written label, and then take it to the incubator for cultivation.

It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Claims (10)

1. a petri dish, it is characterized in that: comprise dish cover and dish body, the inner surface of described dish cover is provided with plasma spray film, the outer wall of described dish cover mouth portion is provided with outer wall grinding area, described dish cover The inner wall of the mouth is provided with internal threads; the outer wall of the mouth of the dish body is provided with external threads matching the inner threads on the cover of the dish; the outer surface of the bottom of the dish body is provided with a bottom frosted area. 2. The petri dish according to claim 1, characterized in that: said petri dish is a plastic petri dish. 3. The culture dish according to claim 1, characterized in that: the plasma sprayed film is a plasma sprayed film treated with RF-Ar plasma. 4. The petri dish according to claim 1, characterized in that: there are multiple frosted outer wall areas, which are evenly distributed on the outer wall of the mouth of the dish lid. 5. The petri dish according to claim 1, characterized in that: there are multiple frosted bottom areas, which are evenly distributed on the outer surface of the bottom of the dish body. 6 . The culture dish according to claim 1 , wherein there are multiple internal threads and external threads, which are evenly distributed on the inner wall of the mouth of the dish lid and the outer wall of the mouth of the dish body. 7. The culture dish according to claim 1, characterized in that: a label slot is provided on the outer wall of the mouth of the dish cover. 8. The culture dish according to claim 1, characterized in that: the center of the dish cover is provided with a vent hole, and the vent hole is composed of an air filter device. 9. The culture dish according to claim 8, wherein: the air filter device is made up of an air filter membrane and a pressure membrane; the pressure membrane is two pieces, each of which is provided with a number of orifices, which are respectively pasted and pressed. It is on both sides of the air filter membrane and extends to the surface of the vessel cover on the periphery of the air hole. 10. The culture dish according to claim 9, wherein the air filter membrane is a cellulose acetate membrane.