Culture dish cover and culture dish

Abstract

The culture dish comprises a bottom shell and the culture dish cover, the bottom shell is provided with a culture groove with an upward opening, the culture dish cover is covered on the culture groove of the bottom shell, the culture dish cover comprises a cover body, the outer edge of the cover body is provided with a downward turnup edge, a containing cavity is arranged in the cover body, and the turnup edge is arranged in the containing cavity. A containing cavity is formed in the cover body, a plurality of balls are arranged in the containing cavity, a ball passing hole communicated with the containing cavity is formed in the lower end face of the cover body, and the hole diameter of the ball passing hole is matched with the diameter of the balls so that the balls can pass through the ball passing hole. According to the culture dish cover and the culture dish, the coating effect is good, the operation is simple and efficient, and particularly, the cover and the bottom are in a covering state in the coating process, so that the risk of polluting a culture medium is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of biomedical equipment, specifically a petri dish lid and a petri dish. Background Technology

[0002] A petri dish is a laboratory vessel used for culturing microorganisms or cells. It consists of a flat bottom and a lid, and is typically made of glass or plastic. To use a petri dish, culture medium and the microorganisms or cells to be cultured are placed inside. Then, a spreading stick is used to evenly spread the microorganisms and cells, thus completing the culture of various microorganisms and cells. The spreading of microorganisms or cells is typically done by laboratory personnel using a spreading stick. This involves the personnel taking the spreading stick and evenly spreading the bacterial culture medium onto the entire surface of the culture medium. This spreading process is not only inefficient and yields poor results, but also increases the risk of external contamination due to the lid being left open for extended periods. Utility Model Content

[0003] The present invention aims to at least partially solve one of the technical problems in the related art: to provide a petri dish lid and a petri dish, which have good coating effect, simple and efficient operation, especially since the lid and bottom are in a closed state during the coating process, reducing the risk of external contamination.

[0004] Therefore, one objective of this utility model is to provide a petri dish lid, comprising a lid body with a downward-facing flange on its outer edge, a receiving cavity within the lid body containing a plurality of ball bearings, and a ball-passing hole on the lower end face of the lid body communicating with the receiving cavity. The diameter of the ball-passing hole matches the diameter of the ball bearings, allowing the ball bearings to pass through the hole. When the lid body is placed on the bottom shell of an existing petri dish, the ball bearings fall into the petri dish. As the petri dish is shaken, the microorganisms within the dish are coated. Finally, after the petri dish is inverted, the ball bearings return to the receiving cavity through the ball-passing hole, thus separating the ball bearings from the culture medium and the microorganisms on the culture medium after coating, reducing the impact on the microorganisms on the culture medium during subsequent culturing.

[0005] Preferably, the cover is provided with a protective patch for covering the through-hole of the culture dish, and the protective patch is attached to the cover in a tear-away manner. The protective patch can seal the through-hole of the culture dish, and when the cover is needed, the protective patch can be peeled off to complete the operation of covering the bottom shell of the culture dish with the cover.

[0006] Preferably, the ball-passing hole is connected to the outer edge of the receiving cavity.

[0007] Preferably, the bottom surface of the receiving cavity has a convex guide slope at its center, which drives the ball to move horizontally in a direction away from the center line of the receiving cavity. The guide slope allows the ball in the receiving cavity to move radially to a position against the side wall of the receiving cavity when the cover is placed horizontally. As the cover shakes, the ball can fall sequentially from the ball hole into the culture dish below.

[0008] Preferably, the cover is inclined at the lower end face corresponding to the receiving cavity, and the ball-passing hole is located at a higher position on the lower end face in the vertical direction. The inclined lower end face not only allows the balls in the receiving cavity to sequentially fall into the culture dish below under their own gravity before coating, but also allows the balls to roll towards the position of the ball-passing hole through the inclined lower end face when the culture dish is inverted after coating, and finally fall back into the receiving cavity.

[0009] Preferably, the cover includes an upper cover and a lower cover, which are detachably connected. The upper and lower covers together form a receiving cavity, and the ball bearing hole is located on the lower cover. The cover is composed of a detachable upper cover and a lower cover, which facilitates cleaning and disinfection of the cover and the ball bearing inside the cover after disassembly.

[0010] Another objective of this invention is to provide a petri dish, a bottom shell and the aforementioned petri dish lid, wherein the bottom shell has a culture groove with the opening direction facing upward, and the petri dish lid is fitted onto the culture groove of the bottom shell.

[0011] The above technical solution has the following advantages or beneficial effects: First, after the petri dish lid is closed on the bottom shell, simply shaking the bottom shell allows the ball to automatically fall onto the culture medium on the bottom shell. With continued shaking, the rolling of the ball completes the coating of the bacterial community on the culture medium, resulting in a more uniform dispersion of the bacterial community. Its coating effect is superior to existing coating rods. Second, the petri dish lid and bottom shell remain closed throughout the entire coating process, thus avoiding the problem of the petri dish lid opening during coating operations and contaminating the culture tank. Third, the ball passage hole is located near the side wall of the receiving cavity, allowing it to connect with the outer edge of the receiving cavity. Furthermore, the addition of a guide slope allows the ball to pass through the ball passage hole more quickly during shaking of the bottom shell. Finally, the upper and lower covers are detachably connected, facilitating cleaning after disassembly.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the petri dish of this utility model.

[0014] Figure 2 This is a schematic diagram of the exploded disassembly of the petri dish of this utility model.

[0015] Figure 3 for Figure 1 A schematic diagram of the internal structure of a medium-sized petri dish in longitudinal section.

[0016] Among them, 1. Cover body; 1.1. Upper cover; 1.2. Lower cover; 2. Flanged edge; 3. Receiving cavity; 4. Ball bearing; 5. Ball passage hole; 6. Protective patch; 7. Guide slope; 8. Lower end face; 9. Bottom shell; 9.1. Culture tank; 10. Solid culture medium. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] The petri dish according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] This utility model provides a petri dish lid, as shown in the figure. It includes a lid body 1 with a downward-facing flange 2 on its outer edge. The lid body 1 has a receiving cavity 3, and a plurality of ball bearings 4 are disposed within the receiving cavity 3. The lower end face 8 of the lid body 1 has a ball-passing hole 5 communicating with the receiving cavity 3. The diameter of the ball-passing hole 5 matches the diameter of the ball bearings 4 so that the ball bearings 4 can pass through the ball-passing hole 5. Specifically, the diameter of the ball-passing hole 5 is larger than the diameter of the ball bearings 4.

[0020] Preferably, the cover 1 is provided with a protective patch 6 for covering the ball hole 5, and the protective patch 6 is attached to the cover 1 in a tear-away manner. Specifically, one side of the protective patch 6 is adhesive, so that the protective patch 6 is attached to the lower end surface of the cover 1 and covers the entire ball hole 5. Before the cover 1 is used, the protective patch 6 can effectively seal the ball hole 5, on the one hand preventing the ball 4 in the receiving cavity 3 from falling out, and on the other hand reducing the influence of the external environment on the ball 4 in the receiving cavity 3, keeping the ball 4 clean.

[0021] The ball passage 5 is connected to the outer edge of the receiving cavity 3. Preferably, the cross-section of the receiving cavity 3 is circular. When the cover 1 is shaken in the circumferential direction, the ball 4 will stick to the inner wall of the receiving cavity 3 under the action of centrifugal force. As the ball 4 moves in the circumferential direction, each ball 4 can fall into the culture dish below in sequence when passing above the ball passage 5.

[0022] A convex guide slope 7 is provided at the center of the bottom surface of the receiving cavity 3, which is used to drive the ball bearing 4 to move horizontally in a direction away from the center line of the receiving cavity 3. In this embodiment, when the cover 1 is placed on the bottom shell of the culture dish and kept horizontal, the ball bearing 4 in the receiving cavity 3 can automatically move radially outward under the guidance of the guide slope 7 until the ball bearing 4 abuts against the inner wall of the receiving cavity 3.

[0023] The cover 1 is inclined on the lower end face 8 corresponding to the receiving cavity 3, and the ball hole 5 is located at a higher position on the lower end face 8 in the vertical direction.

[0024] The cover 1 includes an upper cover 1.1 and a lower cover 1.2, which are detachably connected. The upper cover 1.1 and the lower cover 1.2 together form a receiving cavity 3, and the ball hole 5 is located on the lower cover 1.2.

[0025] A petri dish includes a bottom shell 9 and a petri dish lid as described in the above embodiment. The bottom shell 9 has an upward-facing culture groove 9.1, and the petri dish lid fits over the culture groove 9.1 of the bottom shell 9 from top to bottom. A solid culture medium 10 is placed inside the culture groove 9.1. Shaking the bottom shell 9 on a horizontal surface causes the petri dish lid to shake synchronously. The ball bearing 4 inside the petri dish lid, under the inertial force of the shaking, overcomes the tilt angle of the lower end face of the receiving cavity 3, allowing the ball bearing 4 to fall into the receiving cavity 3 through the ball hole 5. The rolling of the ball bearing 4 on the solid culture medium 10 disperses the microorganisms on the surface of the solid culture medium 10, achieving a uniform coating effect. After coating, simply invert the bottom shell 9 and the petri dish lid, with the petri dish lid below and the bottom shell 9 above. At this time, the ball bearing 4, under its own gravity, rolls along the tilted lower end face of the receiving cavity 3 towards the location of the ball hole 5, and finally returns to the receiving cavity 3 through the ball hole 5, completing the separation of the ball bearing 4 and the solid culture medium 10.

[0026] After the coating process is completed in the above embodiments, the petri dish lid can be removed from the bottom shell 1 and replaced with an existing conventional petri dish lid. At the same time, the used petri dish lid and the roller inside the petri dish lid can be cleaned, sterilized, and disinfected for reuse. Alternatively, the petri dish lid and the bottom shell 9 can be used together for subsequent culture work. In this case, the roller 7 is located in the receiving cavity 3, which has little or no impact on the culture of bacteria in the receiving cavity 3.

[0027] Based on the above method of using petri dishes, the following steps are included.

[0028] S1. Prepare solid culture medium 10 in the bottom shell 9 and place the microorganisms to be cultured on solid culture medium 10;

[0029] S2. Select a petri dish lid that matches the bottom shell 9, and peel off the protective patch 6 at the bottom of the petri dish lid, that is, peel off the protective patch 6 attached to the ball hole 5.

[0030] S3. Place the opening of the petri dish lid downwards on top of the bottom shell 9, and shake the bottom shell 9 and the petri dish lid horizontally so that the ball 4 falls into the culture chamber 3 through the ball hole 5 and the microorganisms are dispersed on the upper surface of the solid culture medium 10 as the ball 4 rolls.

[0031] S4, the inverted bottom shell 9 and the petri dish lid, so that the ball 4 falls back into the receiving cavity 3 through the ball hole 5;

[0032] S5. Reset the inverted bottom shell 1 and the petri dish lid to complete the subsequent culture.

[0033] In step S3, the time for the ball 4 to oscillate and coat within the culture chamber 3 can be obtained through a limited number of experiments.

[0034] The above inversion refers to Figure 3 The orientation is reversed 180 degrees, so that the bottom shell 9 is on top and the petri dish lid is on the bottom. Resetting / inverting means resetting to the correct orientation. Figure 3 As shown in the diagram, the bottom shell 9 is at the bottom and the petri dish lid is on top.

[0035] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0036] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A petri dish lid, characterized in that: Includes a cover (1), the outer edge of the cover (1) has a downward-facing flange (2), the cover (1) has a receiving cavity (3), the receiving cavity (3) is provided with a plurality of balls (4), the lower end face (8) of the cover (1) has a ball hole (5) communicating with the receiving cavity (3), the diameter of the ball hole (5) matches the diameter of the balls (4) so ​​that the balls (4) can pass through the ball hole (5).

2. The petri dish cap according to claim 1, characterized in that: The cover (1) is provided with a protective patch (6) for covering the ball hole (5), and the protective patch (6) is attached to the cover (1) in a tearable manner.

3. The petri dish lid according to claim 1, characterized in that: The ball hole (5) is connected to the outer edge of the receiving cavity (3).

4. The petri dish lid according to claim 3, characterized in that: The bottom surface of the receiving cavity (3) is provided with a convex guide slope (7) to drive the ball (4) to move horizontally in a direction away from the center line of the receiving cavity (3).

5. The petri dish cap according to claim 4, characterized in that: The cover (1) is inclined on the lower end face (8) corresponding to the receiving cavity (3), and the ball hole (5) is located at a higher position in the vertical direction on the lower end face (8).

6. The petri dish cap according to claim 1, characterized in that: The cover (1) includes an upper cover (1.1) and a lower cover (1.2). The upper cover (1.1) and the lower cover (1.2) are detachably connected. The upper cover (1.1) and the lower cover (1.2) together form a receiving cavity (3). The ball hole (5) is located on the lower cover (1.2).

7. A petri dish, characterized in that: The invention includes a bottom shell (9) and a petri dish lid according to any one of claims 1-6, wherein the bottom shell (9) has a culture tank (9.1) with the opening direction facing upward, and the petri dish lid is fitted onto the culture tank (9.1) of the bottom shell (9).

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