Schistosome cercaria escaping device

Abstract

The utility model belongs to the field of cercaria escape, particularly relates to a schistosome cercaria escape device, and aims to solve the problems that when oncomelania escape is carried out in the prior art, flowing of water flow in a real environment cannot be well simulated, an angle-adjustable illumination system cannot be arranged, the cercaria escape effect is poor, experimental equipment cannot be sterilized after an experiment is finished, and the working efficiency is low. In order to solve the problem that cercaria possibly remains in a box body and causes pollution, the utility model provides the following scheme: the device comprises a box body, supporting legs are fixedly connected to four corners of the bottom of the box body, a controller is arranged on the box body, a heater and a temperature sensor are arranged in the box body, and one side of the box body is fixedly communicated with a water inlet pipe; the top of the box body is open, a fixing plate is fixedly connected to the interior of the box body through bolts, natural water flow and illumination in different time periods can be well simulated through the disturbance mechanism and the adjusting mechanism, and the cercaria releasing process is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of cercariae exfoliation technology, and in particular to a device for exfoliating cercariae of Schistosoma. Background Technology

[0002] Schistosomiasis is a zoonotic disease that seriously endangers human health and hinders socio-economic development; it is a vector-borne disease. Infectious Oncomelania snails are snails that have been infested with the cercariae of Schistosoma japonicum. When the cercariae are released from the infective snails, they can infect humans or animals. Therefore, infective Oncomelania snails and cercariae are the most important subjects of concern in the prevention, monitoring, and scientific research of schistosomiasis.

[0003] Currently, the common method for schistosomiasis cercariae to escape is to place the snails in a clean conical flask or small beaker and then place them in water at a suitable temperature.

[0004] In the prior art, CN221554380U discloses a device for the escape of cercariae of Schistosoma japonicum. This device can achieve the dual purpose of separating and identifying infected snails and collecting live cercariae. It can improve the cercariae escape rate, save a lot of labor costs, and avoid direct contact between people and infected water containing cercariae, thus protecting the safety of operators.

[0005] The technical solution has the following problems:

[0006] When exfoliating cercariae from Oncomelania hupensis, the equipment cannot effectively simulate the flow of water in a real environment, and it cannot be equipped with an adjustable lighting system, resulting in poor cercariae exfoliation. Furthermore, the equipment cannot be sterilized after the experiment, which may leave residual cercariae inside the chamber, leading to contamination. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for the exfoliation of schistosome cercariae.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A device for releasing cercariae of Schistosoma cercariae includes a box body with legs fixedly connected to the four corners of the bottom of the box body. A controller is mounted on the box body. A heater and a temperature sensor are installed inside the box body. A water inlet pipe is fixedly connected to one side of the box body. The top of the box body is open and a fixing plate is fixedly connected to the inside by bolts. The fixing plate has multiple placement holes, each containing a storage cylinder. A connecting plate is fixedly connected to one side of the box body. A light plate is installed on the connecting plate via an adjustment mechanism. The light plate is equipped with a light lamp for providing illumination.

[0010] The box is equipped with a disturbance mechanism for disturbing the water flow;

[0011] The chamber is also equipped with a sterilization mechanism for sterilizing the interior of the chamber after the experiment.

[0012] In one possible design, the adjustment mechanism includes an adjustment frame, two connecting columns, and a fastening nut. The adjustment frame is fixedly connected to a connecting plate and has an arc-shaped hole. The two connecting columns are fixedly connected to both sides of the lamp plate. The ends of the two connecting columns that are far apart from each other pass through the two arc-shaped holes and extend to the outside. The fastening nut is threadedly connected to the connecting columns, and the diameter of the fastening nut is larger than that of the arc-shaped hole.

[0013] In one possible design, a connecting ring is fixedly connected to the outer side of the storage cylinder, a locking pin is fixedly connected to the connecting ring, a slot adapted to the locking pin is provided on the fixing plate, a filter screen is fitted to the top of the storage cylinder, a fixing post is fixedly connected to the filter screen, a fixing hole adapted to the fixing post is provided on the connecting ring, and the fixing post is engaged with the fixing hole.

[0014] In one possible design, the sterilization mechanism includes a sealing cover and an ultraviolet germicidal lamp. The sealing cover is slidably connected to the top of the housing, and the ultraviolet germicidal lamp is disposed on the inner wall of the top of the sealing cover. A control switch for controlling the opening and closing of the ultraviolet germicidal lamp is provided on the top of the sealing cover.

[0015] In one possible design, a groove is provided on the top of the housing, and a slider is fixedly connected to the sealing cover, with the slider slidably connected within the groove.

[0016] In one possible design, the disturbance mechanism includes a biomimetic robotic fish housed within the enclosure, the biomimetic robotic fish being connected to the controller via wireless transmission.

[0017] In this application, multiple storage cylinders are first clamped onto a fixed plate, and then Oncomelania snails are placed inside the storage cylinders. Subsequently, a filter screen is installed on the storage cylinders to prevent the snails from escaping. Water is injected into the tank through a water inlet pipe, causing the water to overflow the storage cylinders. A heater heats the water to the required temperature. At the same time, a bionic robotic fish is activated by a controller. The bionic robotic fish swims in the water. By simulating the swimming behavior of fish, the mechanical disturbance generated by the bionic robotic fish can simulate the stimulation of Oncomelania snails by biological activities in natural water bodies. This disturbance may promote the stress response of Oncomelania snails, accelerate the release of cercariae, and increase the number of cercariae released per unit time, thereby improving the cercariae capture efficiency of the device.

[0018] The lamp can simulate sunlight, and by holding the two connecting posts, the lamp plate can be moved within the arc-shaped hole to adjust the light angle. After adjustment, the connecting posts can be fixed by tightening the fastening nut. This can simulate the light conditions at different times of day (such as morning, noon, and evening) and accelerate the release of cercariae in the natural environment.

[0019] After the experiment, the storage container was removed and the cercariae inside were studied and treated. The water was drained through the drain pipe on the box, and then the sealing cover was pushed to close the box. The ultraviolet germicidal lamp was turned on to irradiate the inside of the box for about an hour to sterilize it.

[0020] In this invention, a biomimetic robotic fish capable of disturbing water flow is set up to simulate the swimming behavior of fish. The resulting mechanical disturbance can simulate the stimulation of Oncomelania snails by biological activities in natural water bodies. This disturbance may promote the stress response of Oncomelania snails and accelerate the release of cercariae.

[0021] In this invention, by holding the two connecting posts, the lamp panel can be moved within the arc-shaped hole, thereby adjusting the light angle. After adjustment, the fastening nut can be tightened to fix the connecting posts. This can simulate the light conditions at different times of day (such as morning, noon, and evening) and accelerate the release of cercariae in the natural environment.

[0022] In this invention, the ultraviolet germicidal lamp irradiates the inside of the chamber for about an hour to sterilize it, which can completely eliminate the residual cercariae inside the chamber and avoid cross-contamination. Attached Figure Description

[0023] Figure 1 This is a front view schematic diagram of the schistosome cercariae exfoliation device proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of a schistosome cercariae exfoliation device proposed in this utility model;

[0025] Figure 3 This is a first side view of the schistosome cercariae exfoliation device proposed in this utility model;

[0026] Figure 4 This is a second side view of the schistosome cercariae exfoliation device proposed in this utility model.

[0027] In the diagram: 1. Box body; 2. Fixing plate; 3. Storage cylinder; 4. Connecting ring; 5. Bionic robotic fish; 6. Connecting plate; 7. Adjusting frame; 8. Light panel; 9. Illuminator; 10. Connecting column; 11. Fastening nut; 12. Sealing cover; 13. Ultraviolet germicidal lamp; 14. Slide groove; 15. Filter screen; 16. Arc-shaped hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Example 1

[0030] Reference Figure 1-4 An effusive device for cercariae is described, comprising a rectangular box 1 with stainless steel legs welded to its four corners. The box 1 is made of transparent, high-temperature resistant polycarbonate material, and has an open top design. Inside the box 1, a stainless steel fixing plate 2 is bolted to the inside. The fixing plate 2 has circular placement holes, each containing a silicone sealing ring to secure a storage cylinder 3.

[0031] Storage cylinder 3 is made of cylindrical transparent acrylic material.

[0032] A connecting plate 6 is welded to the right side wall of the housing 1. An adjusting bracket 7 is fixed to the surface of the connecting plate 6 by bolts. An arc-shaped hole 16 is opened on the adjusting bracket 7. Two stainless steel connecting columns 10 are welded to both sides of the lamp plate 8. The ends of the connecting columns 10 are provided with external threads, and the fastening nuts 11 are provided with internal threads that match the external threads at the ends of the connecting columns 10. During adjustment, the connecting columns 10 are slid along the arc-shaped hole 16 to the target angle (adjustable from 0° to 90°), and the positioning is achieved by rotating the fastening nuts 11 (the diameter of the fastening nuts 11 is larger than that of the arc-shaped hole 16). LED illumination lamps 9 (wavelength 400-700nm full spectrum) are evenly distributed on the surface of the lamp plate 8, with a total power of 24W, supporting brightness adjustment from 0-100%.

[0033] By holding the two connecting posts 10, the lamp plate 8 can be moved within the arc-shaped hole 16, thereby adjusting the light angle. After adjustment, the fastening nut 11 can be tightened to fix the connecting posts 10. This can simulate the light conditions at different times of day (such as morning, noon, and evening) and accelerate the release of cercariae in the natural environment.

[0034] The biomimetic robotic fish 5 adopts a biomimetic trevally body design, with a three-jointed flexible tail fin driven by a waterproof motor, and its swimming speed is adjustable from 0-5cm / s. The biomimetic robotic fish 5 has a built-in ZigBee wireless communication module, which interacts in real time with the controller (STM32F407 main control chip) on the side wall of the housing 1. The controller is connected to the touch screen display.

[0035] The bionic robotic fish 5 is activated by the controller and swims in the water. By simulating the swimming behavior of fish, the mechanical disturbance generated by the bionic robotic fish 5 can simulate the stimulation of Oncomelania snails by biological activities in natural water bodies. This disturbance may promote the stress response of Oncomelania snails, accelerate the release of cercariae, increase the number of cercariae released per unit time, and thus improve the cercariae capture efficiency of the device.

[0036] The top of the cabinet 1 has sliding grooves 14 on both sides, which cooperate with the slider at the bottom of the sealing cover 12. The sealing cover 12 adopts a double-layer structure: the outer layer is a 3mm thick 304 stainless steel plate, and the inner layer is inlaid with 8 quartz glass sleeves, each sleeve encapsulating a 15W ultraviolet germicidal lamp 13 (wavelength 253.7nm). The top of the sealing cover 12 is equipped with a waterproof control switch (IP68 protection rating). Pushing the sealing cover 12 will cover the cabinet 1 and turn on the ultraviolet germicidal lamp 13 to irradiate the inside of the cabinet 1 for about one hour to sterilize, which can completely eliminate the residual cercariae in the cabinet 1 and avoid cross-contamination.

[0037] This application is for the field of schistosome cercariae, but can also be used in other fields to which this application applies.

[0038] Example 2

[0039] refer to Figure 1-4 An improvement on Example 1: A device for the release of schistosome cercariae.

[0040] A connecting ring 4 is welded to the outer edge of the top of the storage cylinder 3. Two locking pins are symmetrically arranged at the bottom of the connecting ring 4, which cooperate with the pre-set slots on the fixing plate 2 to achieve quick assembly and disassembly. A filter screen 15 is installed on the top of the storage cylinder 3 through a snap-fit ​​structure. The filter screen 15 is made of stainless steel, and the filter holes of the filter screen 15 must be smaller than the length of the cercariae. A fixing post is welded to its edge, which is interference-fitted with the blind hole on the top of the connecting ring 4.

[0041] However, as is well known to those skilled in the art, the working principles and wiring methods of the bionic robotic fish 5, light panel 8, illumination lamp 9, ultraviolet germicidal lamp 13, and controller are commonplace and belong to conventional means or common knowledge. Therefore, they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0042] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for releasing cercariae of Schistosoma cercariae, comprising a box (1), wherein support legs are fixedly connected to the four corners of the bottom of the box (1), a controller is mounted on the box (1), a heater and a temperature sensor are provided inside the box (1), a water inlet pipe is fixedly connected to one side of the box (1), the top of the box (1) is open, and a fixing plate (2) is fixedly connected to the inside by bolts, wherein the fixing plate (2) has multiple placement holes, and storage cylinders (3) are placed in the multiple placement holes, characterized in that, A connecting plate (6) is fixedly connected to one side of the box (1). A lamp plate (8) is provided on the connecting plate (6) through an adjustment mechanism. A lighting lamp (9) for providing illumination is provided on the lamp plate (8). The housing (1) is equipped with a disturbance mechanism for disturbing the water flow; The box (1) is also equipped with a sterilization mechanism for sterilizing the inside of the box (1) after the experiment.

2. The schistosome cercariae release device according to claim 1, characterized in that, The adjustment mechanism includes an adjustment frame (7), two connecting columns (10) and a fastening nut (11). The adjustment frame (7) is fixedly connected to the connecting plate (6). An arc-shaped hole (16) is provided on the adjustment frame (7). The two connecting columns (10) are fixedly connected to both sides of the lamp plate (8). The ends of the two connecting columns (10) that are far apart from each other pass through the two arc-shaped holes (16) and extend to the outside. The fastening nut (11) is threadedly connected to the connecting column (10). The diameter of the fastening nut (11) is larger than that of the arc-shaped hole (16).

3. The schistosome cercariae release device according to claim 1, characterized in that, A connecting ring (4) is fixedly connected to the outside of the storage cylinder (3). A locking pin is fixedly connected to the connecting ring (4). A slot adapted to the locking pin is opened on the fixing plate (2). A filter screen (15) is fitted to the top of the storage cylinder (3). A fixing post is fixedly connected to the filter screen (15). A fixing hole adapted to the fixing post is opened on the connecting ring (4). The fixing post is fitted into the fixing hole.

4. The schistosome cercariae release device according to claim 1, characterized in that, The sterilization mechanism includes a sealing cover (12) and an ultraviolet germicidal lamp (13). The sealing cover (12) is slidably connected to the top of the box (1). The ultraviolet germicidal lamp (13) is disposed on the inner wall of the top of the sealing cover (12). The top of the sealing cover (12) is provided with a control switch for controlling the opening and closing of the ultraviolet germicidal lamp (13).

5. The schistosomiasis cercariae release device according to claim 4, characterized in that, The top of the box (1) is provided with a sliding groove (14), and a slider is fixedly connected to the sealing cover (12), and the slider is slidably connected in the sliding groove (14).

6. The schistosome cercariae release device according to claim 1, characterized in that, The disturbance mechanism includes a bionic robotic fish (5) installed inside the housing (1), and the bionic robotic fish (5) is connected to the controller via wireless transmission.

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