A needleless injector for pigs

Abstract

This utility model discloses a needle-free injector for pigs, comprising: a shell, an electric pressure generator body fixedly installed on the inner wall of the shell, and a power supply body fixedly installed on the inner wall of the shell. The needle-free injector for pigs provided by this utility model involves injecting a certain amount of liquid medicine or vaccine into a storage bottle, then sealing the storage bottle inside a connecting tube, then filling the shell with water at a suitable temperature, then attaching a threaded cap to the shell via a threaded seal, then pressing two pressure rods in the middle to fully insert the insertion block into the fixing seat, and then releasing the two pressure rods to allow the insertion tube to be inserted into the corresponding insertion block. A heat-insulating sleeve is then placed over the shell, reducing the impact of external temperature on the shell, and the temperature of the liquid medicine in the storage bottle is further reduced by the temperature of the water inside the shell, ensuring the subsequent injection effect of the medicine and improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, and in particular to a needleless syringe for pigs. Background Technology

[0002] Needle-free injectors are devices that deliver medications or liquids directly into the skin or body using high-pressure technology, eliminating the need for traditional needles. They offer advantages such as being painless and reducing the risk of infection, and are widely used in areas such as vaccination and insulin injection for diabetes. They are especially suitable for children or patients who have a fear of needles.

[0003] For example, Chinese utility model patent (CN215228806U) discloses a continuous needle-free injector for veterinary use, which states: "This utility model uses high pressure to force liquid medicine through an extremely fine hole, generating a liquid column that penetrates the epidermis and sprays it subcutaneously, avoiding cross-infection of animal diseases and improving drug absorption rate." It also addresses the technical problem that "veterinary syringes usually have needles. When administering vaccines or other drugs to animals in large quantities, a single needle is often used for multiple purposes, easily causing cross-infection of animal diseases. Using a single needle for one purpose would also be a huge waste of resources."

[0004] In summary, existing technologies utilize a regulating valve to adjust pressure (at the same power, different air inlets create different pressures), causing the drug to flow due to pressure. This triggers the injection, allowing the drug to be injected into the skin through the needle-free injector head. However, this method has the following technical problems: The aforementioned devices rely on a reservoir to hold liquid drugs or vaccines. During prolonged use, the liquid drugs or vaccines in the reservoir may experience temperature increases due to external temperatures. Some drugs may decompose or lose their efficacy at higher temperatures, thus reducing the injection effect. Therefore, this application proposes a needle-free injector for pigs, providing a new technical solution to address the technical problems mentioned in the aforementioned patent. Utility Model Content

[0005] Based on this, it is necessary to address the aforementioned technical problems by providing a needle-free injector for pigs. This injector involves injecting a certain amount of liquid medication or vaccine into a storage bottle, keeping the bottle opening upwards, fitting a connecting tube over the bottle's opening, rotating the bottle to seal it within the connecting tube, then filling the casing with water at a suitable temperature, attaching a threaded cap to the casing via a threaded seal, pressing two pressure rods in the middle, fully inserting the insertion block into the fixing base, and then releasing the two pressure rods to allow the insertion tube to be inserted into the corresponding insertion block. The casing can then be installed on the fixing base, and an insulation sleeve is placed over the casing. The insulation sleeve reduces the impact of external temperature on the casing, and the temperature of the water inside the casing further reduces the influence of external temperature on the temperature of the medication in the storage bottle. This significantly reduces the risk of the medication in the storage bottle overheating due to external temperature fluctuations during continuous use, ensuring the effectiveness of subsequent drug injection and improving the device's practicality.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A needle-free injector for pigs, used for drug injection in pigs.

[0008] The needle-free injector specifically includes:

[0009] The casing has an electric pressure generator body fixedly installed on its inner wall, a power supply body fixedly installed on its inner wall, a regulating valve body installed at the air inlet end of the electric pressure generator body, a trigger body for controlling the electric pressure generator body installed on the casing, a spray head fixedly connected to the outer wall of the casing, an infusion tube fixedly connected to the output end of the electric pressure generator body, an end of the infusion tube away from the electric pressure generator body fixedly connected to the inner wall of the spray head, a connecting pipe fixedly connected to the inner wall of the casing, the connecting pipe fixedly connected to the inner wall of the infusion tube, a limiting mechanism provided inside the infusion tube, and a drug delivery mechanism provided on the connecting pipe.

[0010] The medicine feeding mechanism includes a medicine storage bottle, a fixing base, a heating component, a heat preservation component, a squeezing component, and a plug-in component. The medicine storage bottle is detachably and sealed inside the connecting pipe via threads. The fixing base is fixedly connected to the outer wall of the connecting pipe. The fixing base is fixedly connected to the outer wall of the outer shell. Two squeezing components and a plug-in component are provided inside the fixing base.

[0011] In a preferred embodiment of the needleless injector provided by this utility model, the heating component includes a housing, with two inserts fixedly connected to the bottom of the housing. Both inserts are movably inserted into a fixed base, and a threaded cap is detachably and sealingly connected to the housing via threads.

[0012] In a preferred embodiment of the needleless injector provided by this utility model, the heat preservation component includes a heat preservation sleeve, and the heat preservation sleeve is movably fitted onto the outside of the shell.

[0013] In a preferred embodiment of the needleless injector provided by this utility model, the squeezing assembly includes a movable block, the movable block is slidably connected to the inner wall of the fixed base, two fixed rods are fixedly connected to the inner wall of the fixed base, the movable block is slidably connected to the outer wall of the two fixed rods, a first spring is respectively sleeved on the outside of the two fixed rods, the two ends of the first spring are respectively fixedly connected to the inner wall of the fixed base and the outer wall of the movable block, a pressure rod is fixedly connected to the outer wall of the movable block, and the pressure rod is slidably connected to the inner wall of the fixed base.

[0014] In a preferred embodiment of the needleless injector provided by this utility model, the insertion assembly includes a cannula, two cannulas are fixedly connected to the outer wall of the movable block, the cannulas are movably sleeved outside the fixed rod, and the cannulas are movably inserted into the insertion block.

[0015] In a preferred embodiment of the needleless injector provided by this utility model, the limiting mechanism includes a fixing ring, a fixing ring is fixedly connected to the inner wall of the infusion tube, a fixing frame is fixedly connected to the inner wall of the infusion tube, a T-shaped rod is slidably connected to the inner wall of the fixing frame, a plug ball adapted to the fixing ring is fixedly connected to the outer wall of the T-shaped rod, and a second spring is sleeved on the outside of the T-shaped rod, with the two ends of the second spring fixedly connected to the plug ball and the outer wall of the fixing frame, respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The needle-free injector provided by this utility model involves injecting a certain amount of liquid medicine or vaccine into a storage bottle, keeping the opening of the storage bottle facing upwards, fitting a connecting tube over the opening of the storage bottle, rotating the storage bottle to seal it inside the connecting tube, then filling the casing with water at a suitable temperature, and then attaching a threaded cap to the casing using the threaded seal. Next, the two pressure rods are pressed inwards, and the insert block is fully inserted into the fixing base. The two pressure rods are then released, allowing the insert tube to be inserted into the corresponding insert block. The casing can then be installed on the fixing base, and an insulating sleeve is placed over the casing. The insulating sleeve reduces the impact of external temperature on the casing, and the temperature of the water inside the casing further reduces the influence of external temperature on the temperature of the liquid medicine in the storage bottle. This significantly reduces the risk of the liquid medicine in the storage bottle overheating due to external temperature during continuous use, ensuring the subsequent injection effect and improving the practicality of the device.

[0018] The needle-free injector provided by this utility model uses the elastic force of the second spring to stably attach the plug ball to the fixed ring. When the drug in the infusion tube forms a water flow due to the pressure of the electric pressure unit, the trigger body is activated, and the drug in the infusion tube then squeezes the plug ball, creating a gap between the plug ball and the fixed ring. The drug is then injected into the epidermis through the nozzle. When the pressure of the drug flow is less than the elastic force of the second spring, the plug ball adheres to the fixed ring, thus blocking the drug from being sprayed through the nozzle. This also reduces the backflow of drug after passing through the fixed ring, reducing the possibility of drug contamination of the infusion tube, connecting tube, and drug storage bottle, and improving the practicality of the device. Attached Figure Description

[0019] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of the needleless injector provided by this utility model;

[0021] Figure 2 A schematic diagram of the internal structure of the outer shell of the needleless injector provided by this utility model;

[0022] Figure 3 An exploded view of part of the internal structure of the needleless injector provided by this utility model;

[0023] Figure 4 A schematic diagram of the partitioned and unfolded structure of the fixing seat of the needleless injector provided by this utility model;

[0024] Figure 5 The needle-free injector provided by this utility model Figure 4 Enlarged view of A in the middle;

[0025] Figure 6 An exploded view of the limiting mechanism of the needleless injector provided by this utility model.

[0026] The markings in the diagram are explained as follows:

[0027] 1. Outer shell; 2. Electric pressure unit body; 3. Power supply body; 4. Regulating valve body; 5. Trigger body; 6. Spray head; 7. Infusion tube; 8. Connecting tube; 9. Limiting mechanism; 10. Medication delivery mechanism; 11. Medicine storage bottle; 12. Fixing base; 13. Outer shell; 14. Insert block; 15. Threaded cap; 16. Insulation sleeve; 17. Moving block; 18. Fixing rod; 19. First spring; 20. Insert tube; 21. Pressure rod; 22. Fixing ring; 23. Fixing frame; 24. T-shaped rod; 25. Blocking ball; 26. Second spring. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] As described in the background art, the above-mentioned device relies on a reservoir to load liquid drugs or vaccines. During the long-term use of the device, the liquid drugs or vaccines in the reservoir may experience a rise in temperature due to external temperature. Some drugs are prone to decomposition or loss of efficacy at high temperatures, thereby reducing the injection effect of the drugs.

[0030] To solve this technical problem, this utility model provides a needleless injector for pigs, which is used for drug injection in pigs.

[0031] For details, please refer to Figures 1-3 Needle-free injectors specifically include:

[0032] The outer casing 1 has an electric pressure generator body 2 fixedly installed on its inner wall, a power supply body 3 fixedly installed on its inner wall, a regulating valve body 4 installed at the air inlet end of the electric pressure generator body 2, a trigger body 5 for controlling the electric pressure generator body 2 installed on the outer casing 1, a spray head 6 fixedly connected to the outer wall of the outer casing 1, an infusion tube 7 fixedly connected to the output end of the electric pressure generator body 2, an end of the infusion tube 7 away from the electric pressure generator body 2 fixedly connected to the inner wall of the spray head 6, a connecting pipe 8 fixedly connected to the inner wall of the outer casing 1, the connecting pipe 8 fixedly connected to the inner wall of the infusion tube 7, a limiting mechanism 9 provided inside the infusion tube 7, and a drug delivery mechanism 10 provided on the connecting pipe 8.

[0033] The medicine feeding mechanism 10 includes a medicine storage bottle 11, a fixing base 12, a heating component, a heat preservation component, a squeezing component, and a plugging component. The medicine storage bottle 11 is detachably and sealed inside the connecting pipe 8 by means of threads. The fixing base 12 is fixedly connected to the outer wall of the connecting pipe 8. The fixing base 12 is fixedly connected to the outer wall of the outer shell 1. Two squeezing components and a plugging component are provided inside the fixing base 12.

[0034] In this application, the electric pressure booster body 2, the power supply body 3, the regulating valve body 4, and the trigger body 5 are the same as the electric pressure booster, power supply, regulating valve, and trigger in the prior art mentioned in the background art in terms of specific structure and working principle.

[0035] The needle-free injector provided by this utility model involves injecting a certain amount of liquid medicine or vaccine into the drug storage bottle 11, then keeping the opening of the drug storage bottle 11 facing upwards, fitting the connecting tube 8 onto the opening of the drug storage bottle 11, rotating the drug storage bottle 11 to seal it within the connecting tube 8, then filling the housing 13 with water of a suitable temperature, then attaching the threaded cap 15 to the housing 13 via a threaded seal, then pressing the two pressure rods 21 in the middle, then fully inserting the insert block 14 into the fixing base 12, and finally releasing the two pressure rods 21 to release the needle. The cannula 20 is inserted into the corresponding insert block 14, and then the housing 13 can be installed on the fixed base 12. Subsequently, the heat insulation sleeve 16 is placed on the outside of the housing 13. The heat insulation sleeve 16 reduces the influence of the external temperature on the housing 13. The temperature of the water inside the housing 13 further reduces the influence of the external temperature on the temperature of the medicine in the medicine storage bottle 11. As a result, the device can significantly reduce the temperature rise of the medicine in the medicine storage bottle 11 due to the influence of the external temperature during continuous use, ensuring the subsequent injection effect of the drug and improving the practicality of the device.

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] Example 1:

[0038] Please refer to Figures 1-5 A needle-free injector for pigs, comprising:

[0039] The outer casing 1 has an electric pressure generator body 2 fixedly installed on its inner wall, a power supply body 3 fixedly installed on its inner wall, a regulating valve body 4 installed at the air inlet end of the electric pressure generator body 2, a trigger body 5 for controlling the electric pressure generator body 2 installed on the outer casing 1, a spray head 6 fixedly connected to the outer wall of the outer casing 1, an infusion tube 7 fixedly connected to the output end of the electric pressure generator body 2, an end of the infusion tube 7 away from the electric pressure generator body 2 fixedly connected to the inner wall of the spray head 6, a connecting pipe 8 fixedly connected to the inner wall of the outer casing 1, and a limiting mechanism 9 provided inside the infusion tube 7. A medication delivery mechanism 10 is provided on the connecting pipe 8. The side of the spray head 6 away from the outer casing 1 is more rounded, which can reduce the damage caused to the pig when the spray head 6 touches the pig's skin.

[0040] The drug delivery mechanism 10 includes a drug storage bottle 11, a fixing base 12, a heating component, a heat preservation component, a squeezing component, and a plug-in component. The drug storage bottle 11 is detachably and sealed inside the connecting pipe 8 via threads. The fixing base 12 is fixedly connected to the outer wall of the connecting pipe 8. The fixing base 12 is fixedly connected to the outer wall of the outer shell 1. Two squeezing components and a plug-in component are provided inside the fixing base 12. The drug delivery mechanism 10 can provide the injection solution to the connecting pipe 8 and the infusion tube 7 and delay the temperature change of the solution due to the influence of the external environment.

[0041] The heating component includes a housing 13, with two inserts 14 fixedly connected to the bottom of the housing 13. Both inserts 14 are movably inserted into the fixed base 12. A threaded cap 15 is detachably and sealingly connected inside the housing 13 via threads. The heating component can reduce the influence of external temperature on the temperature of the medicine storage bottle 11. Water suitable for storing the medicine liquid in the medicine storage bottle 11 can be placed inside the housing 13.

[0042] The insulation component includes an insulation sleeve 16, which is movably fitted onto the outside of the housing 13. The insulation component can reduce the influence of the external ambient temperature on the temperature of the water inside the housing 13, thereby reducing the influence of the external environment on the medicine storage bottle 11.

[0043] The extrusion assembly includes a movable block 17, which is slidably connected to the inner wall of the fixed base 12. Two fixed rods 18 are fixedly connected to the inner wall of the fixed base 12. The movable block 17 is slidably connected to the outer wall of the two fixed rods 18. A first spring 19 is sleeved on the outside of the two fixed rods 18 respectively. The two ends of the first spring 19 are fixedly connected to the inner wall of the fixed base 12 and the outer wall of the movable block 17 respectively. A pressure rod 21 is fixedly connected to the outer wall of the movable block 17. The pressure rod 21 is slidably connected to the inner wall of the fixed base 12. The position of the movable block 17 can be adjusted by the extrusion assembly.

[0044] The insertion assembly includes insertion tubes 20. Two insertion tubes 20 are fixedly connected to the outer wall of the movable block 17. The insertion tubes 20 are movably sleeved on the outside of the fixed rod 18. The insertion tubes 20 are movably inserted into the insertion block 14. The insertion assembly can restrict or release the insertion block 14 from leaving the fixed seat 12 according to the position of the movable block 17.

[0045] With the above structural design, when using the device, a certain amount of liquid medicine or vaccine is injected into the medicine storage bottle 11. Then, keeping the opening of the medicine storage bottle 11 facing upwards, the connecting tube 8 is fitted onto the opening of the medicine storage bottle 11. The medicine storage bottle 11 is rotated so that it is sealed inside the connecting tube 8. Then, water of appropriate temperature is poured into the casing 13. Then, the threaded cap 15 is connected to the casing 13 by the threaded seal. Then, the two pressure rods 21 are pressed in the middle, causing the corresponding moving block 17 to slide outside the corresponding two fixed rods 18. This causes the corresponding first spring 19 to deform and drive the insertion tube 20 to move accordingly. Then, the insertion block 1... 4. After fully inserting into the fixed base 12, release the two pressure rods 21, so that the moving block 17 can move under the elastic force of the corresponding first spring 19, and insert the tube 20 into the corresponding insert block 14. Then, the shell 13 can be installed on the fixed base 12 by relying on the insert block 14. Then, the heat insulation sleeve 16 is put on the outside of the shell 13. Then, the heat insulation sleeve 16 reduces the influence of the external temperature on the shell 13. Then, according to the different animals being injected, adjust the pressure of the regulating valve body 4 (under the same power, the pressure formed by different air inlets is different). The drug forms a water flow due to the pressure. Pull the trigger body 5, and the drug is injected into the epidermis through the spray head 6.

[0046] Example 2:

[0047] The needle-free injector provided in Example 1 has been further optimized, specifically, as follows: Figure 2 and Figure 6 As shown, the limiting mechanism 9 includes a fixing ring 22. The inner wall of the infusion tube 7 is fixedly connected to the fixing ring 22, and the inner wall of the infusion tube 7 is fixedly connected to the fixing frame 23. The inner wall of the fixing frame 23 is slidably connected to a T-shaped rod 24. The outer wall of the T-shaped rod 24 is fixedly connected to a ball stopper 25 that is compatible with the fixing ring 22. A second spring 26 is sleeved on the outside of the T-shaped rod 24. The two ends of the second spring 26 are fixedly connected to the ball stopper 25 and the outer wall of the fixing frame 23, respectively. When injecting a pig, the electric pressure device body 2 generates a certain pressure in the infusion tube 7. During the injection, the pressure of the drug solution should be greater than the elastic force of the second spring 26, thereby causing the ball stopper 25 to leave the fixing ring 22.

[0048] Through the above structural design, during injection, the drug solution flows from the infusion tube 7 to the injection head 6. During this process, the main body 2 of the electric pressure device ensures that the pressure of the drug solution in the infusion tube 7 is greater than the elastic force of the second spring 26. The drug in the infusion tube 7 then squeezes the plug ball 25, causing the T-shaped rod 24 to slide relative to the fixed frame 23. This causes the second spring 26 to deform, creating a gap between the plug ball 25 and the fixed ring 22. The drug solution then flows through the gap between the fixed ring 22 and the plug ball 25 to the injection head 6 and is then injected into the epidermis through the injection head 6. When the pressure of the drug flow is less than the elastic force of the second spring 26, the plug ball 25 adheres to the fixed ring 22, thus blocking the drug from being sprayed through the injection head 6. This also reduces the backflow of the drug after passing through the fixed ring 22, reducing the possibility of drug contamination of the infusion tube 7, connecting tube 8, and drug storage bottle 11.

Claims

1. A needleless injector for pigs comprising a housing (1), characterised in that: An electric pressure generator body (2) is fixedly installed on the inner wall of the outer shell (1). A power supply body (3) is fixedly installed on the inner wall of the outer shell (1). A regulating valve body (4) is installed at the air inlet end of the electric pressure generator body (2). A trigger body (5) for controlling the electric pressure generator body (2) is installed on the outer shell (1). A spray head (6) is fixedly connected to the outer wall of the outer shell (1). An infusion tube (7) is fixedly connected to the output end of the electric pressure generator body (2). The end of the infusion tube (7) away from the electric pressure generator body (2) is fixedly connected to the inner wall of the spray head (6). A connecting tube (8) is fixedly connected to the inner wall of the outer shell (1). The connecting tube (8) is fixedly connected to the inner wall of the infusion tube (7). A limiting mechanism (9) is provided inside the infusion tube (7). A drug delivery mechanism (10) is provided on the connecting tube (8). The medicine feeding mechanism (10) includes a medicine storage bottle (11), a fixed base (12), a heating component, a heat preservation component, a squeezing component, and a plug-in component. The medicine storage bottle (11) is detachably and sealed inside the connecting pipe (8) by means of threads. The fixed base (12) is fixedly connected to the outer wall of the connecting pipe (8). The fixed base (12) is fixedly connected to the outer wall of the outer shell (1). Two squeezing components and a plug-in component are provided inside the fixed base (12).

2. The needle-free injector of claim 1, wherein, The heating assembly includes a housing (13), and two inserts (14) are fixedly connected to the bottom of the housing (13). Both inserts (14) are movably inserted into the fixed base (12). A threaded cover (15) is detachably and sealingly connected to the housing (13) by means of threads.

3. The needle-free injector of claim 2, wherein, The insulation component includes an insulation sleeve (16), and the insulation sleeve (16) is movably fitted onto the outside of the shell (13).

4. The needle-free injector of claim 1, wherein, The extrusion assembly includes a movable block (17), the movable block (17) is slidably connected to the inner wall of the fixed seat (12), two fixed rods (18) are fixedly connected to the inner wall of the fixed seat (12), the movable block (17) is slidably connected to the outer wall of the two fixed rods (18), and a first spring (19) is respectively sleeved on the outside of the two fixed rods (18). The two ends of the first spring (19) are respectively fixedly connected to the inner wall of the fixed seat (12) and the outer wall of the movable block (17). A pressure rod (21) is fixedly connected to the outer wall of the movable block (17), and the pressure rod (21) is slidably connected to the inner wall of the fixed seat (12).

5. The needleless injector according to claim 4, characterized in that, The insertion assembly includes insertion tubes (20). Two insertion tubes (20) are fixedly connected to the outer wall of the movable block (17). The insertion tubes (20) are movably sleeved on the outside of the fixed rod (18) and movably inserted into the insertion block (14).

6. The needleless injector according to claim 1, characterized in that, The limiting mechanism (9) includes a fixing ring (22), the inner wall of the infusion tube (7) is fixedly connected to the fixing ring (22), the inner wall of the infusion tube (7) is fixedly connected to the fixing frame (23), the inner wall of the fixing frame (23) is slidably connected to a T-shaped rod (24), the outer wall of the T-shaped rod (24) is fixedly connected to a ball (25) that is compatible with the fixing ring (22), and a second spring (26) is sleeved on the outside of the T-shaped rod (24). The two ends of the second spring (26) are respectively fixedly connected to the ball (25) and the outer wall of the fixing frame (23).

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