Needleless injector for pigs

Abstract

The utility model relates to the technical field of needleless injectors, in particular to a needleless injector for pigs, which comprises an injection shell, and a battery is mounted in a handle of the injection shell. A fixing sleeve is installed on the top of the injection shell, a needle cylinder is connected into the fixing sleeve, a motor module is fixedly connected to the top of the inner wall of the injection shell, a driving cam is fixedly connected to the output end of the motor module, a connecting rod is arranged on one side of the driving cam, and a connecting main shaft is connected to the side, away from the driving cam, of the connecting rod. The connecting main shaft is connected in the injection shell in a sliding manner; a guide block is arranged outside one end, far away from the connecting main shaft, of the piston rod; and a medicine feeding bin is arranged at the end, away from the piston rod, of the guide block. The medicine is fed through the small hole, the distance between the spring seal and the piston rod medicine feeding small hole is well controlled, the effect of one-way valve sealing is achieved, and backflow of the medicine can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of needle-free syringes, in particular to a needle-free syringe for pigs. Background Art

[0002] The needle-free syringe uses the pressure jet principle to complete the subcutaneous injection of the drug solution. That is, the pressure generated by the pressure device inside the needle-free syringe pushes the drug solution in the drug tube through the micropores to form an extremely fine drug solution column, so that the drug solution instantly penetrates the human epidermis and reaches the subcutaneous tissue. The drug solution is absorbed in the subcutaneous tissue in the form of a diffuse shape with a diameter of 3 to 5 cm.

[0003] The patent application with the publication number CN117504054A discloses a novel needle-free syringe. The utility model sets a first limit groove and a second limit block so that the top cover can rotate on the top of the syringe to prevent it from being separated from the syringe. By setting the first limit block, when the top cover drives the second limit block to contact the first limit block, the first injection port is connected with the second injection port, and the medicine can be injected into the syringe. The top cover is flipped to separate the first injection port from the second injection port, so that the first injection port is blocked by the top cover to prevent the leakage of the medicine in the syringe. By setting a suction cup, the target can be sucked to prevent the syringe from being displaced, which is convenient for operating the syringe.

[0004] The above patent can achieve the purpose of easy operation of injection, but during the injection process, a batch of pigs need to be injected. After the injection of one of the pigs is completed, the uninjected medicine may flow back during the resetting of the piston rod, and may re-enter the syringe and cause contamination to the internal medicine. At present, needle-free syringes exist in products, but their reliability of use is poor, and the injection effect of oily vaccines is poor, and they need to be used and maintained by special personnel. Utility Model Content

[0005] In view of the problems in the prior art, the utility model provides a needle-free syringe for pigs.

[0006] The utility model solves the technical problem by adopting the following technical solution: a needle-free syringe for pigs, comprising an injection shell, wherein a battery is installed in the handle of the injection shell;

[0007] A fixing sleeve is installed on the top of the injection housing, a syringe is connected inside the fixing sleeve, a motor module is fixedly connected to the top of the inner wall of the injection housing, and a driving cam is fixedly connected to the output end of the motor module.

[0008] A connecting rod is provided on one side of the driving cam, and a connecting spindle is connected to the side of the connecting rod away from the driving cam, and the connecting spindle is slidably connected in the injection housing;

[0009] The connecting shaft is connected to a piston rod at one end away from the connecting rod, and a guide block is arranged on the outside of the end of the piston rod away from the connecting shaft; the piston rod is inserted into the guide block, and a medicine feed bin is arranged at one end of the guide block away from the piston rod, and a nozzle is arranged at one end of the medicine feed bin away from the guide block, and a one-way valve is arranged between the nozzle and the medicine feed bin.

[0010] Specifically, the battery is electrically connected to a control board, and the control board is connected to a motor module via a wire.

[0011] Specifically, a drug inlet tube is provided at the output end of the syringe, a drug inlet channel is provided in the guide block, and the drug inlet tube and the drug inlet channel are connected.

[0012] Specifically, a flood seal is provided in the guide block.

[0013] Specifically, a driving spring is disposed on the outer wall of the piston rod, one end of the driving spring is connected to the inner wall of the injection housing, and the other end of the driving spring is fixedly connected to the outer wall of the connecting spindle.

[0014] Specifically, a display screen is provided at one end of the injection housing away from the nozzle, and the display screen is electrically connected to the control panel.

[0015] Beneficial effects of the utility model:

[0016] (1) The needle-free syringe for pigs described in the utility model adopts a small hole to feed medicine, and controls the distance between the pan-seal seal and the small hole for feeding medicine on the piston rod, which plays the role of a one-way valve seal and can prevent the backflow of medicine.

[0017] (2) The needle-free syringe for pigs described in the utility model seals the medicine inlet of the piston rod through the sealing effect of the pan seal and the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A cross-sectional view of

[0021] Figure 3 This is a schematic diagram of the position of the one-way valve and the nozzle of the utility model.

[0022] In the figure: 1. injection shell; 11. display screen; 12. connecting rod; 13. driving cam; 14. driving spring; 5. battery; 51. control board; 2. syringe; 21. medicine inlet tube; 3. connecting spindle; 31. piston rod; 33. one-way valve; 34. nozzle; 35. pan seal; 36. medicine inlet channel; 37. medicine inlet chamber; 38. guide block; 4. motor module. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-Figure 3 As shown, a needle-free syringe for pigs of the utility model comprises an injection housing 1, and a battery 5 is installed in the handle of the injection housing 1;

[0025] A fixed sleeve is installed on the top of the injection housing 1, and a syringe 2 is connected inside the fixed sleeve. A motor module 4 is fixedly connected to the top of the inner wall of the injection housing 1, and a driving cam 13 is fixedly connected to the output end of the motor module 4.

[0026] A connecting rod 12 is provided on one side of the driving cam 13, and a connecting spindle 3 is connected to the connecting rod 12 away from the driving cam 13. The connecting spindle 3 is slidably connected in the injection housing 1;

[0027] The end of the connecting shaft 3 away from the connecting rod 12 is connected to a piston rod 31, and a guide block 38 is arranged on the outside of the end of the piston rod 31 away from the connecting shaft 3; the piston rod 31 is inserted into the guide block 38, and a medicine feed bin 37 is arranged on the end of the guide block 38 away from the piston rod 31, and a nozzle 34 is arranged on the end of the medicine feed bin 37 away from the guide block 38, and a one-way valve 33 is arranged between the nozzle 34 and the medicine feed bin 37.

[0028] The motor module 4 drives the driving cam 13 to rotate. The driving cam 13 can drive the connecting spindle 3 to reciprocate through the connecting rod 12 during operation. The connecting spindle 3 pushes the piston rod 31 to move synchronously. The piston rod 31 compresses the high-pressure liquid medicine in the medicine inlet chamber 37 and sprays it through the nozzle 34 during the process of moving toward the nozzle 34.

[0029] The one-way valve 33 can be used to prevent the backflow of the liquid medicine.

[0030] Specifically, the battery 5 is electrically connected to the control board 51 , and the control board 51 is connected to the motor module 4 through a wire.

[0031] The battery 5 supplies power to the control board 51 and the motor module 4 , and the control board 51 controls the operation of the motor module 4 .

[0032] Specifically, a drug inlet tube 21 is disposed at the output end of the syringe 2 , a drug inlet channel 36 is disposed in the guide block 38 , and the drug inlet tube 21 and the drug inlet channel 36 are connected.

[0033] The liquid medicine in the syringe 2 enters the medicine inlet channel 36 through the medicine inlet tube 21 , and then enters the medicine inlet chamber 37 .

[0034] Specifically, a flood seal 35 is disposed in the guide block 38 .

[0035] The sealing effect of the flood seal 35 and the piston rod seals the medicine inlet of the piston rod. During injection, the liquid in the syringe 2 enters the medicine inlet chamber 37.

[0036] Specifically, the other end of the driving spring 14 is fixedly connected to the outer wall of the connecting spindle 3 .

[0037] Specifically, a display screen 11 is disposed at one end of the injection housing 1 away from the nozzle 34 , and the display screen 11 is electrically connected to the control board 51 .

[0038] The display screen 11 is electrically connected to the control panel 51 , and the display screen 11 can display data such as the amount of medicine injected each time.

[0039] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A needle-free syringe for pigs, comprising an injection housing (1), characterized in that: A battery (5) is installed in the handle of the injection housing (1); A fixing sleeve is installed on the top of the injection housing (1), a syringe (2) is connected inside the fixing sleeve, a motor module (4) is fixedly connected to the top of the inner wall of the injection housing (1), and a driving cam (13) is fixedly connected to the output end of the motor module (4). A connecting rod (12) is provided on one side of the driving cam (13); a connecting spindle (3) is connected to the side of the connecting rod (12) away from the driving cam (13); and the connecting spindle (3) is slidably connected in the injection housing (1); The end of the connecting shaft (3) away from the connecting rod (12) is connected to a piston rod (31), and a guide block (38) is arranged outside the end of the piston rod (31) away from the connecting shaft (3); the piston rod (31) is slidably inserted in the guide block (38), and a medicine feed bin (37) is arranged at the end of the guide block (38) away from the piston rod (31), and a nozzle (34) is arranged at the end of the medicine feed bin (37) away from the guide block (38), and a one-way valve (33) is arranged between the nozzle (34) and the medicine feed bin (37).

2. The needle-free syringe for pigs according to claim 1, characterized in that: The battery (5) is electrically connected to a control board (51), and the control board (51) is connected to a motor module (4) via a wire.

3. The needle-free syringe for pigs according to claim 1, characterized in that: The output end of the syringe (2) is provided with a medicine inlet tube (21), a medicine inlet channel (36) is provided in the guide block (38), and the medicine inlet tube (21) and the medicine inlet channel (36) are connected.

4. The needle-free syringe for pigs according to claim 3, characterized in that: A flood seal (35) is arranged inside the guide block (38).

5. The needle-free syringe for pigs according to claim 4, characterized in that: The outer wall of the piston rod (31) is provided with a driving spring (14), one end of the driving spring (14) is connected to the inner wall of the injection housing (1), and the other end of the driving spring (14) is fixedly connected to the outer wall of the connecting spindle (3).

6. The needle-free syringe for pigs according to claim 2, characterized in that: A display screen (11) is provided at one end of the injection housing (1) away from the nozzle (34), and the display screen (11) is electrically connected to the control panel (51).

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