Syringes for animal experiments
The injector for animal experiments addresses the inefficiencies in drug handling by providing automated drug addition and dose adjustment, enhancing the convenience and reliability of drug delivery processes.
Patent Information
- Application Number
- JP2025002294U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2035-07-10
AI Technical Summary
The process of drawing up and injecting drugs in animal experiments is cumbersome and affects efficiency due to the need for manual handling and differentiation between different drug batches.
An injector for animal experiments with an automated mechanism that includes a syringe, drug discharge and supply tubes, adjustable dose control, and a piston system for automatic drug addition and adjustment, utilizing tapered grooves and springs for seamless drug transfer and dose setting.
Facilitates convenient and efficient drug delivery by automatically adding and adjusting drug doses, improving operational efficiency and reliability of experimental results.
Smart Images
Figure 0003252749000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to the field of syringe technology, and more particularly to syringes for animal experiments. [Background technology]
[0002] Syringes are widely used in the field of animal experiments, and syringes for animal experiments are mainly used to deliver drugs, vaccines or other therapeutic substances directly into the bodies of experimental animals, which can be achieved by different injection methods such as subcutaneous injection, intramuscular injection, intravenous injection, etc. Such direct delivery methods can ensure accurate distribution and absorption of drugs in the body, thereby improving the reliability and reproducibility of experimental results, which plays an important role in drug development.
[0003] When injecting drugs in animal experiments, before each injection, it is necessary to first use a syringe to draw up the drug and then inject it. This process involves many detailed steps, such as inserting the syringe into the medicine bottle after injecting a drug into an animal and drawing up the drug, and paying attention to the amount of drug drawn up when pulling the plunger. In order to distinguish between injection doses of different batches of drug, after the syringe has drawn up the drug, it is necessary to place the medicine bottle in a safe position before re-injecting. The entire process is very cumbersome and affects the efficiency of the injection. Summary of the Invention [Problem to be solved by the invention]
[0004] SUMMARY OF THE INVENTION The purpose of the present invention is to provide a syringe for animal experiments that can automatically add medicine and adjust the amount of medicine added by overcoming the shortcomings of the prior art. [Means for solving the problem]
[0005] To achieve the above objectives, the technical solution of the present invention is realized as follows:
[0006] The present invention discloses an injector for animal experiments, including a syringe, having a first cylindrical body fixed to and communicating with one end of the syringe, a drug discharge tube fixed to and communicating with the end of the first cylindrical body remote from the syringe, an injection needle attached to one end of the drug discharge tube, and a cap of the injection needle threadably attached to the drug discharge tube, a second cylindrical body fixed to and communicating with the syringe, a drug supply tube fixed to and communicating with the second cylindrical body, a drug storage bottle attached to the end of the drug supply tube remote from the second cylindrical body, a bottle neck fixed to and communicating with the bottle neck, and the drug supply tube and bottle neck threadably attached, a piston sealed within the syringe and slidably connected, a piston rod fixed to one side of the piston, and an adjustment assembly for adjusting the injection dose attached to one end of the syringe.
[0007] Preferably, the adjustment assembly includes a disk having a screw threaded therein, the end of the screw proximal to the piston rod being rotatably connected to the piston rod.
[0008] Preferably, a first ear plate and a first grip are fixed symmetrically to the syringe, a second ear plate and a second grip are fixed symmetrically to the disk, a connecting rod is slidably connected within both the first ear plate and the first grip, one end of each of the two connecting rods is fixed to the second ear plate and the second grip, and a locking block is fixed to the other end of each of the two connecting rods, and a third spring is fitted onto the outside of the connecting rod, and both ends of one of the third springs abut against the first ear plate and the second ear plate, respectively, and both ends of the other third spring abut against the first grip and the second grip, respectively.
[0009] Preferably, a first partition plate is fixed inside the first cylindrical body, a first tapered groove is formed inside the first partition plate, and a first tapered plug is filled inside the first tapered groove.
[0010] Preferably, a plurality of first side plates are fixed at equal intervals to the outside of the first tapered plug, a first guide rod is fixed to one side of the first side plate, the first guide rod penetrates the first partition plate and is located within the first partition plate so as to slide in a sealed manner, a first baffle plate is fixed to the end of the first guide rod remote from the first side plate, and a first spring is fitted onto the outside of the first guide rod, and both ends of the first spring abut against the first partition plate and the first baffle plate, respectively.
[0011] Preferably, a second partition plate is fixed inside the second cylindrical body, a second tapered groove is formed inside the second partition plate, and a second tapered plug is filled inside the second tapered groove.
[0012] Preferably, a plurality of second side plates are fixed at equal intervals to the outside of the second tapered plug, a second guide rod is fixed to one side of the second side plate, the second guide rod penetrates the second partition plate and is located within the second partition plate so as to slide in a sealed manner, a second baffle plate is fixed to the end of the second guide rod remote from the second side plate, and a second spring is fitted onto the outside of the second guide rod, and both ends of the second spring abut against the second baffle plate and the second partition plate, respectively. [Effects of the Invention]
[0013] As can be seen from the above technical solutions, the present application has the following beneficial effects:
[0014] (1) The first grip and the second grip are held together, and the second grip is pressed to drive the disk, connecting rod, screw, piston rod, and piston to move. When the piston moves inside the syringe, the drug in the syringe collides with the first tapered plug, and the first tapered plug does not seal the first tapered groove, completing the injection. In this case, the second tapered plug seals the second tapered groove. When the second grip and the second ear plate move, they compress the third spring. After the injection is completed, the repulsive force of the first spring drives the movement of the first tapered plug, and the first tapered plug The second gripper is then pressed down gently, and the repulsive force of the third spring drives the disk, screw, piston rod, and piston to move away from the injection needle. The piston then creates a negative pressure inside the syringe, and the negative pressure further causes the second tapered plug to unblock the second tapered groove. The medicine in the medicine reservoir passes through the second tapered groove and flows into the syringe, and the corresponding dose of medicine is automatically drawn into the syringe. This process is repeated, and medicine can be automatically added after the injection is completed, making the operation more convenient.
[0015] (2) According to the dose of different drugs to be injected, the screw is rotated to move it inside the disk, and as the disk moves, it drives the movement of the piston rod and the piston, and by observing the measurement line on the outside of the syringe, the piston is moved to the corresponding dose position, so that the amount of drug to be added each time can be automatically adjusted according to the difference in the injection dose of different drugs. [Brief explanation of the drawings]
[0016] In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only embodiments of the present invention, and those skilled in the art can derive other drawings based on the provided drawings without any creative efforts. [Figure 1]1 is a diagram showing the structure of a syringe for animal experiments provided by the present invention; FIG. [Figure 2] 1 is a cross-sectional view of the syringe for animal testing provided by the present invention; FIG. [Figure 3] FIG. 3 is a diagram showing the structure of point A in FIG. 2 provided by the present invention. [Figure 4] FIG. 3 is a diagram showing the structure of point B in FIG. 2 provided by the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0017] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, and uses. It should be understood that the same or similar reference numerals in all of these drawings indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the embodiments of the present disclosure. Certain parts in certain drawings may be in a protruding form to illustrate relevant details or structures of the embodiments of the present disclosure.
[0018] Referring to Figures 1 to 4, In one embodiment of the present invention, an injector for animal testing is provided, which includes a syringe 1, a measuring line provided on the outside of the syringe 1, a first cylindrical body 2 fixed to and communicating with one end of the syringe 1, a drug discharge tube 3 fixed to and communicating with the end of the first cylindrical body 2 remote from the syringe 1, a syringe needle 4 provided at one end of the drug discharge tube 3, a cap of the syringe needle 4 and the drug discharge tube 3 screwed together, a second cylindrical body 5 fixed to and communicating with the syringe 1, a drug supply tube 6 fixed to and communicating with the second cylindrical body 5, and a A medicine storage bottle 7 is provided, a bottle neck 8 is fixed to the medicine storage bottle 7 and is in communication with it, and the medicine supply tube 6 and the bottle neck 8 are threadedly connected to it. A piston 9 is sealed and slidably connected within the syringe 1, a piston rod 10 is fixed to one side of the piston 9, and an adjustment assembly for adjusting the injection dose is provided at one end of the syringe 1. The adjustment assembly includes a disk 14, a screw 19 is threaded within the disk 14, and the end of the screw 19 closest to the piston rod 10 is rotatably connected to the piston rod 10.
[0019] When in use, the medicine to be injected is first placed into the medicine storage bottle 7, then the bottle neck 8 and the medicine supply tube 6 are screwed together, i.e., the medicine storage bottle 7 is attached to the syringe 1, and then, depending on the dose of different medicine to be injected, the screw 19 is rotated to move it into the disk 14, and as the disk 14 moves, it drives the movement of the piston rod 10 and the piston 9, and by observing the measurement line on the outside of the syringe 1, the piston 9 is moved to the corresponding dose position, thereby adjusting the dose to be injected each time.
[0020] Here, a first partition plate 20 is fixed inside the first cylinder 2, a first tapered groove 21 is formed inside the first partition plate 20, a first tapered groove 21 is filled inside the first tapered groove 21, a plurality of first side plates 23 are fixed at equal intervals to the outside of the first tapered plug 22, a first guide rod 24 is fixed to one side of the first side plate 23, the first guide rod 24 passes through the first partition plate 20 and is located inside the first partition plate 20, sealing and sliding, a first baffle plate 25 is fixed to the end of the first guide rod 24 away from the first side plate 23, and a first spring 26 is fitted outside the first guide rod 24, and both ends of the first spring 26 abut against the first partition plate 20 and the first baffle plate 25, respectively.
[0021] Specifically, a second partition plate 27 is fixed inside the second cylinder 5, a second tapered groove 28 is formed inside the second partition plate 27, a second tapered groove 28 is filled inside the second tapered groove 28, a plurality of second side plates 30 are fixed at equal intervals to the outside of the second tapered plug 29, a second guide rod 31 is fixed to one side of the second side plate 30, the second guide rod 31 penetrates the second partition plate 27 and is located inside the second partition plate 27, sealing and sliding, a second baffle plate 32 is fixed to the end of the second guide rod 31 remote from the second side plate 30, a second spring 33 is fitted outside the second guide rod 31, and both ends of the second spring 33 abut against the second baffle plate 32 and the second partition plate 27, respectively.
[0022] The diameters of the vertical cross sections of the first tapered groove 21 and the first tapered plug 22 gradually decrease from the first cylindrical body 2 toward the syringe 1, and the diameters of the vertical cross sections of the second tapered groove 28 and the second tapered plug 29 gradually increase from the second cylindrical body 5 toward the syringe 1.
[0023] Furthermore, a first ear plate 11 and a first grip 12 are fixed symmetrically to the syringe 1, a second ear plate 15 and a second grip 16 are fixed symmetrically to the disk 14, a connecting rod 13 is slidably connected within both the first ear plate 11 and the first grip 12, one end of each of the two connecting rods 13 is fixed to the second ear plate 15 and the second grip 16, and a locking block 18 is fixed to the other end of each of the two connecting rods 13, and a third spring 17 is fitted onto the outside of the connecting rod 13, with both ends of one of the third springs 17 abutting against the first ear plate 11 and the second ear plate 15, respectively, and both ends of the other third spring 17 abutting against the first grip 12 and the second grip 16, respectively.
[0024] When in use, the first grip 12 and the second grip 16 are held, and the second grip 16 is pressed to drive the second grip 16 to move the disk 14 and the connecting rod 13. As the disk 14 moves, it drives the screw 19, the piston rod 10, and the piston 9 to move. When the piston 9 moves inside the syringe 1, the air inside the syringe 1 collides with the first tapered plug 22, causing the first tapered plug 22 to no longer seal the first tapered groove 21. In other words, the air inside the syringe 1 is discharged to the outside through the first tapered groove 21, the drug discharge tube 3, and the injection needle 4. In this case, the second tapered plug 29 seals the second tapered groove 28, and the second tapered plug 22 When the grip 16 and the second ear plate 15 move, they compress the third spring 17, and then the repulsive force of the first spring 26 drives the movement of the first tapered plug 22, causing the first tapered plug 22 to block the first tapered groove 21. Subsequently, the second grip 16 is not pressed hard, and at this time the repulsive force of the third spring 17 drives the disk 14, screw 19, piston rod 10, and piston 9 to move in a direction away from the injection needle 4. At this time, the piston 9 draws negative pressure inside the syringe 1, and the negative pressure further causes the second tapered plug 29 to unblock the second tapered groove 28. At this time, the medicine in the medicine storage bottle 7 passes through the second tapered groove 28 and flows into the syringe 1. Furthermore, since the sum of the elastic moduli of the two third springs 17 is much greater than the sum of the elastic moduli of the plurality of second springs 33, when the third spring 17 needs to return to its original state after being compressed, the repulsive force of the third spring 17 can drive the movement of the piston 9, so that the piston 9 draws a negative pressure into the syringe 1. Since the negative pressure is greater than the sum of the elastic moduli of the plurality of second springs 33, the negative pressure can drive the movement of the second tapered plug 29, so that the second spring 33 cannot be compressed when the second tapered plug 29 and the second side plate 30 move. When the third spring 17 returns to its original state, the piston 9 returns to its initial position, at which point the corresponding dose of medicine is automatically drawn into the syringe 1, and the repulsive force of the second spring 33 then drives the second side plate 30 and the second tapered plug 29 to move, causing the second tapered plug 29 to close the second tapered groove 28. Then, the second grip 16 is pressed, which drives the screw 19, the piston rod 10, and the piston 9 to move, thereby giving the injection. This process can be repeated, and the medicine can be automatically added after the injection is completed, making the operation more convenient.
[0025] The above has described in detail exemplary embodiments of the solutions provided in the present disclosure with reference to preferred embodiments. However, as will be understood by those skilled in the art, various modifications and changes can be made to the above specific embodiments without departing from the concept of the present disclosure, and various combinations can be made to the various technical features and structures provided in the present disclosure without departing from the scope of protection of the present disclosure, which is determined by the scope of the attached utility model registration claims. [Explanation of symbols]
[0026] 1...syringe, 2...first cylindrical body, 3...medicine discharge tube, 4...injection needle, 5...second cylindrical body, 6...medicine supply tube, 7...medicine storage bottle, 8...bottle neck, 9...piston, 10...piston rod, 11...first ear plate, 12...first grip, 13...connecting rod, 14...disk, 15...second ear plate, 16...second grip, 17...third spring, 18...retaining block, 19...screw , 20...first partition plate, 21...first tapered groove, 22...first tapered plug, 23...first side plate, 24...first guide rod, 25...first baffle plate, 26...first spring, 27...second partition plate, 28...second tapered groove, 29...second tapered plug, 30...second side plate, 31...second guide rod, 32...second baffle plate, 33...second spring.
Claims
1. A syringe for animal experiments including a syringe (1), wherein a first cylindrical body (2) is fixed to and communicates with one end of the syringe (1), a drug discharge tube (3) is fixed to and communicates with the end of the first cylindrical body (2) remote from the syringe (1), an injection needle (4) is provided at one end of the drug discharge tube (3), and the cap of the injection needle (4) and the drug discharge tube (3) are screwed together, a second cylindrical body (5) is fixed to and communicates with the syringe (1), and a drug supply tube (6) is fixed to and communicates with the second cylindrical body (5), a medicine storage bottle (7) is provided at the end of the medicine supply tube (6) remote from the second cylindrical body (5), a bottle neck (8) is fixed to the medicine storage bottle (7) and is in communication with the medicine supply tube (6) and the medicine supply tube (6) and the bottle neck (8) are threadedly connected together; a piston (9) is sealed and slidably connected within the syringe (1), a piston rod (10) is fixed to one side of the piston (9), and an adjustment assembly for adjusting the injection dose is provided at one end of the syringe (1).
2. 2. The syringe for animal experiments according to claim 1, wherein the adjustment assembly includes a disk (14) having a screw (19) threaded therein, the end of the screw (19) being close to the piston rod (10) being rotatably connected to the piston rod (10).
3. A first ear plate (11) and a first grip (12) are symmetrically fixed to the syringe (1), a second ear plate (15) and a second grip (16) are symmetrically fixed to the disk (14), a connecting rod (13) is slidably connected within each of the first ear plate (11) and the first grip (12), one end of each of the two connecting rods (13) is fixed to the second ear plate (15) and the second grip (16), respectively, and the two connecting rods (13) are slidably connected within each of the first ear plate (11) and the first grip (12).
3. The syringe for animal experiments according to claim 2, wherein a retaining block (18) is fixed to the other end of each of the connecting rods (13), a third spring (17) is fitted to the outside of the connecting rod (13), and both ends of one of the third springs (17) abut against the first ear plate (11) and the second ear plate (15), respectively, and both ends of the other third spring (17) abut against the first grip (12) and the second grip (16), respectively.
4. 2. The syringe for animal experiments according to claim 1, wherein a first partition plate (20) is fixed inside the first cylindrical body (2), a first tapered groove (21) is formed inside the first partition plate (20), and a first tapered plug (22) is inserted into the first tapered groove (21).
5. 5. The syringe for animal experiments according to claim 4, wherein a plurality of first side plates (23) are fixed at equal intervals to the outside of the first tapered plug (22), a first guide rod (24) is fixed to one side of the first side plate (23), the first guide rod (24) penetrates the first partition plate (20) and is located within the first partition plate (20) and slides therein while being sealed, a first baffle plate (25) is fixed to the end of the first guide rod (24) remote from the first side plate (23), and a first spring (26) is fitted to the outside of the first guide rod (24), and both ends of the first spring (26) abut against the first partition plate (20) and the first baffle plate (25), respectively.
6. 2. The syringe for animal experiments according to claim 1, wherein a second partition plate (27) is fixed inside the second cylindrical body (5), a second tapered groove (28) is formed inside the second partition plate (27), and a second tapered plug (29) is inserted into the second tapered groove (28).
7. 7. The syringe for animal experiments according to claim 6, wherein a plurality of second side plates (30) are fixed at equal intervals to the outside of the second tapered plug (29), a second guide rod (31) is fixed to one side of the second side plate (30), the second guide rod (31) penetrates the second partition plate (27) and is located within the second partition plate (27) and is sealed and slidable therein, a second baffle plate (32) is fixed to the end of the second guide rod (31) remote from the second side plate (30), and a second spring (33) is fitted to the outside of the second guide rod (31), and both ends of the second spring (33) abut against the second baffle plate (32) and the second partition plate (27), respectively.