A pathogen culture dish for basic medicine
Patent Information
- Application Number
- CN202522651820.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-15
AI Technical Summary
Traditional pathogen culture dishes are prone to separation during handling and shaking, have inconsistent sealing, and require multiple culture dishes for culturing multiple pathogens, increasing the cost of experimental consumables.
A pathogen culture dish with a locking mechanism and a cross-shaped divider was designed. The lid is securely locked by the synergistic action of a knob, a rotating rod, and a fixing rod. The cross-shaped divider divides the interior of the culture dish into independent chambers, and a clamping assembly ensures airtightness.
It improves ease of operation, prevents the plate lid from falling off and external bacteria from entering, ensures the stability of the culture system and the accuracy of experimental results, and reduces the cost of experimental consumables.
Smart Images
Figure CN224930551U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a pathogen culture dish for basic medical use. Background Technology
[0002] In the fields of basic medical research and clinical testing, the isolation, culture and identification of pathogens are the core links in conducting etiological diagnosis, drug sensitivity testing and epidemiological research. As the key carrier for the above-mentioned experimental operations, the structural design of pathogen culture dishes directly affects the stability, sealing and accuracy of the culture process.
[0003] During experimental operations such as handling and shaking culture, the lid of the petri dish is prone to separating from the dish body, which can damage the culture system and force the experiment to be interrupted. Some improved petri dishes are reinforced by wrapping with tape, but this is cumbersome and it is difficult to ensure consistent sealing.
[0004] Traditional culture dishes are mostly single-chamber structures. If it is necessary to culture the same pathogen under different conditions or to culture multiple pathogens in parallel, multiple culture dishes need to be used for separate operations, which increases the cost of experimental consumables. Utility Model Content
[0005] The main objective of this invention is to provide a basic medical pathogen culture dish that can effectively solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a basic medical pathogen culture dish, comprising a culture dish body and a dish lid.
[0007] Preferably, a locking mechanism is installed between the petri dish body and the dish lid; a cross-shaped partition plate is installed inside the petri dish body, a top plate is fixedly connected to the upper end of the cross-shaped partition plate, and a pressing component for sealing the cross-shaped partition plate is installed on the surface of the top plate.
[0008] Preferably, the locking mechanism includes a knob, a rotating rod extending to the lower surface of the lid is fixedly connected to the lower surface of the knob, a fixing rod is fixedly connected to the lower surface of the rotating rod, a spring is fixedly connected to the outer side of the fixing rod near the center of the surface of the rotating rod, a rotating seat is fixedly connected to the surface of the rotating rod near the lower surface of the lid, and the upper end of the spring is fixedly connected to the lower surface of the rotating seat.
[0009] Preferably, a rotating groove is formed at the center of the lower surface of the petri dish lid, a T-shaped block is fixedly connected to the upper surface of the rotating seat, and the rotating seat is rotatably connected to the inner wall of the rotating groove through the T-shaped block. A telescopic rod is fixedly connected to both sides of the upper surface of the fixed rod near the spring, and the upper end of the telescopic rod is fixedly connected to the lower surface of the rotating seat. Sliding grooves are formed at both ends of the inner wall surface of the petri dish body, and L-shaped grooves are formed on both sides of the inner wall surface of the petri dish body near the lower end of the sliding grooves. The two ends of the fixed rod are slidably connected to the inner wall of the L-shaped grooves. A sealing groove is formed on the upper surface of the petri dish body, and a sealing ring is fixedly connected to the lower surface of the petri dish lid. The petri dish lid is slidably connected to the inner wall of the sealing groove through the sealing ring.
[0010] Preferably, the clamping assembly includes a cross plate, a connecting rod is fixedly connected to the center of the inner surface of the culture dish body, the center of the cross partition plate and the cross plate are slidably connected to the outer surface of the connecting rod, the front end and the rear end of the lower surface of the cross plate are fixedly connected to the telescopic rod two, the front end and the rear end of the lower surface of the cross plate near the outer side of the telescopic rod two are both fixedly connected to the spring two and the lower end of the telescopic rod two are both fixedly connected to the pressure plate, the lower surface of the pressure plate is in contact with the lower surface of the top plate, the upper end of the connecting rod is provided with an external thread, and the upper end of the connecting rod is threaded with a nut.
[0011] Preferably, the inner surface and side wall surface of the petri dish body are provided with placement grooves near the lower end and outer side of the cross-shaped partition plate. A sealing gasket is fixedly connected to the inner wall of the placement groove, and the outer side of the cross-shaped partition plate is in contact with the inner wall of the placement groove.
[0012] Preferably, the surface of the top plate has multiple through holes, and the inner walls of each through hole are slidably connected with sealing plugs. Indicating arrows are provided at both ends of the upper surface of the knob and the surface of the lid.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the coordinated operation of the knob, rotating rod, fixing rod, spring 1, and rotating seat, during operation, first move the fixing rod down along the sliding groove on the inner wall of both ends of the petri dish body, then press down and rotate the knob to drive the fixing rod to rotate, so that its two ends slide along the L-shaped groove. After sliding to the end, release the knob, and the spring 1 elastically resets to firmly lock the two ends of the fixing rod into the L-shaped groove, achieving a stable lock. There is no need for the cumbersome reinforcement methods such as tape wrapping used in traditional improved petri dishes, which improves the convenience of operation. The sealing ring on the lower surface of the dish lid fits tightly with the sealing groove on the upper surface of the petri dish body to form a sealed protection, which can effectively block the intrusion of external bacteria and dust, avoid contamination of the culture system, and ensure the accuracy of experimental results.
[0014] 2. The cross-shaped divider plate can divide the interior of the petri dish into multiple independent chambers, precisely meeting the experimental needs of parallel culture. The cross-shaped divider plate is installed inside the petri dish, with its lower end and outer side precisely fitting the groove on the inner wall. The sealing gasket inside the groove enhances the sealing of the divider, preventing culture medium leakage between different chambers. The cross-shaped divider plate and the cross plate are guided and limited by the connecting rod. Tightening the nut at the upper end of the connecting rod moves the cross plate downward. Under the guidance of the second telescopic rod and the elastic pressure of the second spring, the pressure plate tightly fits the top plate of the cross-shaped divider plate, achieving stable compression and preventing displacement during culture medium addition, experimental observation, or slight shaking, ensuring the independence of the chambers. The through-hole in the top plate, combined with the sealing plug design, allows reagent addition or sampling to be completed without opening the dish lid, further reducing the risk of contamination. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the locking mechanism structure of this utility model; Figure 4 This is a schematic diagram of the clamping component structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of this utility model.
[0016] In the diagram: 1. Petri dish body; 2. Lid; 3. Locking mechanism; 31. Knob; 32. Rotating base; 33. T-block; 34. Rotating rod; 35. Spring 1; 36. Telescopic rod 1; 37. Fixing rod; 38. Sealing ring; 4. Cross partition plate; 5. Top plate; 6. Pressing assembly; 61. Cross plate; 62. Telescopic rod 2; 63. Spring 2; 64. Pressure plate; 65. Nut; 7. Connecting rod; 8. Through hole; 9. Sealing plug; 10. Placement groove; 11. Sealing groove; 12. L-shaped groove. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0018] like Figures 1-3As shown, a basic medical pathogen culture dish includes a dish body 1 and a lid 2, with a locking mechanism 3 installed between the dish body 1 and the lid 2. A cross-shaped partition plate 4 is installed inside the dish body 1, and a top plate 5 is fixedly connected to the upper end of the cross-shaped partition plate 4. A pressing component 6 for sealing the cross-shaped partition plate 4 is installed on the surface of the top plate 5. The cross-shaped partition plate 4 is installed in the corresponding position inside the dish, dividing the interior of the dish into multiple independent culture areas. The pressing component 6 on the surface of the top plate 5 then seals and fixes the cross-shaped partition plate 4, ensuring that there is no cross-contamination between the areas. The lid 2 covers the dish body 1, and a stable seal is achieved through the locking mechanism 3 between the two. This method meets the need for simultaneous culture of multiple pathogens, eliminates the need for multiple traditional culture dishes, reduces experimental consumable costs, ensures the stability of the culture environment, and effectively improves experimental efficiency and result accuracy.
[0019] like Figure 3As shown, the locking mechanism 3 includes a knob 31. A rotating rod 34 extending to the lower surface of the lid 2 is fixedly connected to the lower surface of the knob 31. A fixing rod 37 is fixedly connected to the lower surface of the rotating rod 34. A spring 35 is fixedly connected to the center of the fixing rod 37 near the outer side of the rotating rod 34. A rotating seat 32 is fixedly connected to the surface of the rotating rod 34 near the lower surface of the lid 2. The upper end of the spring 35 is fixedly connected to the lower surface of the rotating seat 32. A rotating groove is formed at the center of the lower surface of the lid 2. A T-shaped block 33 is fixedly connected to the upper surface of the rotating seat 32. The rotating seat 32 is connected to the T-shaped block 33. Block 33 is rotatably connected to the inner wall of the rotating groove. Telescopic rods 36 are fixedly connected to both sides of the upper surface of the fixed rod 37 near the spring 35. The upper end of the telescopic rod 36 is fixedly connected to the lower surface of the rotating seat 32. Sliding grooves are provided at both ends of the inner wall surface of the culture dish body 1. L-shaped grooves 12 are provided on both sides of the inner wall surface of the culture dish body 1 near the lower end of the sliding grooves. The two ends of the fixed rod 37 are slidably connected to the inner wall of the L-shaped grooves 12. A sealing groove 11 is provided on the upper surface of the culture dish body 1. A sealing ring 38 is fixedly connected to the lower surface of the dish lid 2. The dish lid 2 is connected to the inner wall of the L-shaped groove 12 via the sealing ring 38. The inner wall of the sealing groove 11 is slidably connected. During operation, the experimenter first aligns the lid 2 with the culture dish body 1 and closes it, ensuring that the sealing ring 38 on the lower surface of the lid 2 is accurately embedded in the sealing groove 11 on the upper surface of the culture dish body 1, thus initially achieving a seal. The two ends of the fixing rod 37 then move downwards along the sliding groove. Next, the knob 31 is pressed, causing the rotating rod 34 and the fixing rod 37 to move downwards synchronously. After the two ends of the fixing rod 37 continue to move downwards to the bottom of the sliding groove, the knob 31 is then turned left or right. This causes the rotating rod 34 to rotate the fixing rod 37, allowing the two ends of the fixing rod 37 to slide along the L-shaped groove 12 until they reach the L-shape. After releasing the knob 31 at the end of groove 12, the two ends of the fixing rod 37 are firmly locked into the L-shaped groove 12 under the elastic reset action of spring 35, thus completing the locking. During this process, the rotating seat 32 rotates stably in the rotating groove through the T-shaped block 33, and the telescopic rod 36 plays a guiding and supporting role in the rotation process. No additional reinforcement tools such as tape are needed, making the operation convenient and efficient. Moreover, the locked culture dish will not have the lid 2 fall off during handling and shaking. The cooperation between the sealing ring 38 and the sealing groove 11 also effectively prevents the invasion of external bacteria, ensuring the safety of the experiment and the stability of the culture system.
[0020] like Figure 2 , Figure 4 , Figure 5As shown, the clamping assembly 6 includes a cross plate 61. A connecting rod 7 is fixedly connected to the center of the inner surface of the petri dish body 1. The center of the cross partition plate 4 and the cross plate 61 are slidably connected to the outer surface of the connecting rod 7, respectively. Telescopic rods 62 are fixedly connected to the front and rear ends of the lower surface of the cross plate 61, respectively. Springs 63 are fixedly connected to the outer sides of the lower surface of the cross plate 61 near the telescopic rods 62. Pressure plates 64 are fixedly connected to the lower ends of the springs 63 and the telescopic rods 62. The lower surface of the pressure plate 64 is connected to the lower surface of the top plate 5. The upper outer side of the connecting rod 7 is threaded, and a nut 65 is threaded onto the upper end of the connecting rod 7. Placement grooves 10 are provided on the inner surface and side wall surface of the petri dish body 1 near the lower end and outer side of the cross-shaped partition plate 4. A sealing gasket is fixedly connected to the inner wall of the placement groove 10. The outer side of the cross-shaped partition plate 4 is in contact with the inner wall of the placement groove 10. When it is necessary to compare the culture of the same pathogen under different culture conditions, the petri dish needs to be divided into multiple independent areas with the help of the cross-shaped partition plate 4. At this time, the clamping component 6 can ensure the separation and sealing effect. The experimenters first aligned the center of the cross-shaped separator 4 with the connecting rod 7 at the center of the petri dish, ensuring that the lower end and outer side of the cross-shaped separator 4 precisely fit against the placement groove 10 on the inner wall of the petri dish. The sealing gasket in the placement groove 10 can initially enhance the sealing of the separator. Then, the cross plate 61 was placed on the connecting rod 7, positioning it above the top plate 5. The nut 65 was then tightened onto the external thread at the upper end of the connecting rod 7. During the tightening process, the cross plate 61 gradually moved downwards, causing the telescopic rod 62 and spring 63 on its lower surface to move downwards simultaneously, making the pressure plate 64 tightly fit against the top plate. On the surface of plate 5, telescopic rod 62 ensures that the pressure plate 64 remains stable during downward movement, preventing deviation. Spring 63 provides continuous clamping force to the pressure plate 64 through its own elastic pressure, firmly fixing the cross-shaped separator plate 4 in the placement groove 10. It will not shift due to the addition of culture medium, slight shaking, or moving of the culture dish, effectively avoiding the problem of culture medium leakage or cross-contamination of pathogens between different culture areas, ensuring the accuracy of comparative experimental results. In addition, the cross-shaped separator plate 4 is easy to disassemble and assemble, facilitating the subsequent cleaning and reuse of the culture dish.
[0021] like Figure 3 , Figure 4As shown, the surface of the top plate 5 has multiple through holes 8, and the inner walls of each through hole 8 are slidably connected with a sealing plug 9. The upper surface of the knob 31 and both ends of the surface of the dish lid 2 have indicator arrows. During pathogen culture, if it is necessary to add a trace amount of reagent to a specific culture area or to sample and test the culture, the sealing plug 9 in the corresponding through hole 8 can be pulled out, and a sterile pipette can be used to add reagent to the area or extract a small amount of culture. After the operation is completed, the sealing plug 9 should be quickly reinserted into the through hole 8 to ensure that the sealed environment of the area is not damaged. When the locking mechanism 3 is used to lock the dish lid 2, when the indicator arrow on the upper surface of the knob 31 is aligned with the indicator arrow on the surface of the dish lid 2, its fixing rod 37 is aligned with the sliding groove, which can help the experimenter quickly remove the dish lid 2, improving the convenience and accuracy of the operation.
[0022] The working principle and usage process of this utility model are as follows: During the experiment, the cross-shaped partition plate 4 is first installed by aligning it with the connecting rod 7 at the center of the culture dish, ensuring that its lower end and outer side are precisely fitted with the placement groove 10 on the inner wall. The sealing gasket in the groove first forms a preliminary seal. Then, the cross plate 61 is fitted onto the connecting rod 7, and the upper nut 65 is tightened. The thread drive of the nut 65 drives the cross plate 61 to move downwards. Then, guided by the telescopic rod 62 and provided by the spring 63, the pressure plate 64 is pushed to tightly fit the top plate 5 of the cross-shaped partition plate 4, so that the cross-shaped partition plate 4 is firmly fixed in the placement groove 10, preventing displacement. Finally, multiple independent and sealed culture areas are formed to meet the needs of multiple groups of culture or comparative culture. After the culture is inoculated, when closing the dish lid 2, ensure that the sealing ring 38 under the dish lid 2 is embedded in the sealing groove 11 of the culture dish body 1 to form preliminary protection. At the same time, the two ends of the fixing rod 37 move downwards along the sliding groove on the inner wall of the body, and the knob is pressed. Knob 31 drives the rotating rod 34 and the fixed rod 37 to move down to the bottom of the sliding groove simultaneously. Turning the knob 31 to the left or right causes the two ends of the fixed rod 37 to slide along the L-shaped groove 12 to the end. After releasing the knob 31, the spring 35 elastically resets and drives the fixed rod 37 to move up, so that its two ends are firmly locked into the L-shaped groove 12. During this process, the rotating seat 32 rotates stably in the rotating groove through the T-shaped block 33. The telescopic rod 36 guides and supports the spring 35, ultimately achieving a double seal between the dish lid 2 and the main body, preventing the dish lid 2 from falling off or being invaded by bacteria during handling or shaking. During the culture process, the multiple through holes 8 on the surface of the top plate 5 cooperate with the sealing plug 9 to achieve convenient operation, allowing for the addition or sampling of reagents in independent culture areas, avoiding damage to the culture environment. The indicator arrows on the knob 31 and the dish lid 2 help the experimenter quickly determine the locked or unlocked status, improving the accuracy of operation and ensuring the sealing and stability of the culture system.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A basic medical pathogen culture dish, comprising a dish body (1) and a dish lid (2), characterized in that: A locking mechanism (3) is installed between the petri dish body (1) and the dish lid (2); The petri dish body (1) is equipped with a cross-shaped partition plate (4) inside. A top plate (5) is fixedly connected to the upper end of the cross-shaped partition plate (4). A clamping assembly (6) for sealing the cross-shaped partition plate (4) is installed on the surface of the top plate (5).
2. The pathogen culture dish for basic medical use according to claim 1, characterized in that: The locking mechanism (3) includes a knob (31), a rotating rod (34) extending to the lower surface of the lid (2) is fixedly connected to the lower surface of the knob (31), a fixing rod (37) is fixedly connected to the lower surface of the rotating rod (34), a spring (35) is fixedly connected to the center of the surface of the fixing rod (37) near the outer side of the rotating rod (34), a rotating seat (32) is fixedly connected to the surface of the rotating rod (34) near the lower surface of the lid (2), and the upper end of the spring (35) is fixedly connected to the lower surface of the rotating seat (32).
3. The pathogen culture dish for basic medical use according to claim 2, characterized in that: A rotating groove is provided at the center of the lower surface of the dish cover (2). A T-shaped block (33) is fixedly connected to the upper surface of the rotating seat (32). The rotating seat (32) is rotatably connected to the inner wall of the rotating groove through the T-shaped block (33). A telescopic rod (36) is fixedly connected to both sides of the upper surface of the fixed rod (37) near the spring (35). The upper end of the telescopic rod (36) is fixedly connected to the lower surface of the rotating seat (32). A sliding groove is provided at both ends of the inner wall surface of the culture dish body (1). An L-shaped groove (12) is provided on both sides of the inner wall surface of the culture dish body (1) near the lower end of the sliding groove. The two ends of the fixed rod (37) are slidably connected to the inner wall of the L-shaped groove (12). A sealing groove (11) is provided on the upper surface of the culture dish body (1). A sealing ring (38) is fixedly connected to the lower surface of the dish cover (2). The dish cover (2) is slidably connected to the inner wall of the sealing groove (11) through the sealing ring (38).
4. The pathogen culture dish for basic medical use according to claim 1, characterized in that: The clamping assembly (6) includes a cross plate (61). A connecting rod (7) is fixedly connected to the center of the inner surface of the petri dish body (1). The center of the cross partition plate (4) and the cross plate (61) are slidably connected to the outer surface of the connecting rod (7). The front end and the rear end of the lower surface of the cross plate (61) are fixedly connected to a telescopic rod (62). The front end and the rear end of the lower surface of the cross plate (61) are fixedly connected to a spring (63) near the outer side of the telescopic rod (62). The lower ends of the spring (63) and the telescopic rod (62) are fixedly connected to a pressure plate (64). The lower surface of the pressure plate (64) is in contact with the lower surface of the top plate (5). The upper end of the connecting rod (7) is provided with an external thread. The upper end of the connecting rod (7) is threaded with a nut (65).
5. The basic medical pathogen culture dish according to claim 4, characterized in that: The inner surface and side wall surface of the petri dish body (1) are provided with placement grooves (10) near the lower end and outer side of the cross partition plate (4). The inner wall of the placement groove (10) is fixedly connected with a sealing gasket, and the outer side of the cross partition plate (4) is in contact with the inner wall of the placement groove (10).
6. The pathogen culture dish for basic medical use according to claim 2, characterized in that: The top plate (5) has multiple through holes (8) on its surface. Each through hole (8) has a sealing plug (9) slidably connected to its inner wall. The upper surface of the knob (31) and both ends of the surface of the lid (2) have indicator arrows.