Syringe device for animal vitreous cavity administration
By designing a one-handed syringe device, using the combination of components such as push rods, guide rods, and press plates, the problem of existing devices requiring two-handed operation is solved, and the flexibility and drug quantity control effect is achieved.
Patent Information
- Application Number
- CN202421446009.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-06-24
AI Technical Summary
Existing animal vitreous injector devices require two-handed operation, reducing the flexibility of the device.
A one-handed syringe device is designed, and the drug injection is achieved by setting up a combination of push rod, guide rod, pressing plate, positioning rod, auxiliary plate, fixing disk and torsion spring by using palm grip and thumb pressing, and the push rod is restored through the torsion spring.
It realizes the flexibility of one-handed operation, improves the convenience of use of the syringe device, and controls the amount of drug injection through the scale to avoid too much or too little drugs.
Smart Images
Figure CN223220562U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical instruments, in particular to a syringe device used for administering medicine into the vitreous cavity of animals. Background Art
[0002] The vitreous cavity is an important space inside the animal eye. It is a cavity located behind the lens and occupies four-fifths of the total volume of the eyeball. This cavity is filled with a transparent gel-like substance called vitreous. Vitreous cavity injection is a method of treating eye diseases. The current syringe device is mainly composed of an injection needle, a barrel, a plunger and a push rod. By using an injection needle, the therapeutic drug is injected directly into the vitreous cavity, so that the drug can act directly on the lesion site, thereby achieving the purpose of treatment. However, the syringe device requires two hands to operate when in use. One hand supports the barrel, and then the other hand applies a push force to the push rod to inject the drug into the vitreous cavity. The above injection method requires the use of two hands, which reduces the flexibility of the syringe device. Utility Model Content
[0003] In order to overcome the above-mentioned defects, the utility model provides a syringe device for administering drugs into the vitreous cavity of animals. The syringe device can be operated with one hand through a pressing-type drug delivery method, which improves the flexibility of the syringe device. When the pressure plate is released, the push rod will be reset by a torsion spring.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a syringe device for administering medicine into the vitreous cavity of an animal, comprising a holding tube with a U-shaped cross-section, a medicine cartridge connected to the holding tube, one end of the medicine cartridge connected to an injection needle, the injection needle extending out of one end of the holding tube, the other end of the holding tube passing through both side wings of the holding tube and rotatably connected to a guide rod, one end of the guide rod is connected to a pressure plate, a push rod is slidably connected to the medicine cartridge, one end of the push rod is connected to a barrel plug and the barrel plug is in the medicine cartridge, a positioning rod is rotatably connected in the U-shaped groove at the other end of the pressure plate, an auxiliary plate is connected to the outside of the positioning rod, one end of the guide rod is connected to a fixed disk, a torsion spring is externally connected to the guide rod, one end of the torsion spring is fixed to the holding tube, the other end of the torsion spring is fixed to the fixed disk, and the fixed disk is connected to the outside of the holding tube through the torsion spring.
[0005] As a further solution of the present invention: an indicator ring is slidably sleeved on the outside of the cartridge and a graduated ruler is provided on the outside of the cartridge.
[0006] As a further solution of the present invention: the end of the push rod away from the barrel plug is connected to a movable plate, the movable plate is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the indicator ring.
[0007] As a further solution of the present invention: the auxiliary plate is connected to the push rod, and the movable plate is connected to the indicator ring via a connecting rod.
[0008] As a further solution of the present invention: a slide groove is provided on the holding tube, and a protruding slider is provided at the bottom of the movable plate and is slidably connected in the slide groove.
[0009] Compared with the prior art, the beneficial effects of the present invention are:
[0010] 1. The syringe device for administering medication into the vitreous cavity of animals is provided with a push rod, a guide rod, a pressure plate, a positioning rod, an auxiliary plate, a fixed disk and a torsion spring. After holding the surface of the grip barrel with the palm of the hand, the injection needle is embedded in the treatment site. The thumb presses the pressure plate, and the pressure plate rotates around the guide rod, and the auxiliary plate below the pressure plate applies a thrust to the push rod. The push rod drives the barrel plug to slide in the barrel, and the barrel plug can inject the medicine in the barrel into the vitreous cavity through the injection needle. The syringe device cooperates with the pressure plate, the auxiliary plate and the torsion spring, so that the syringe device can perform the drug injection operation with one hand, and the other hand can support the animal, thereby improving the flexibility of the syringe device. When the pressure plate is released, the push rod is reset by the torsion spring.
[0011] 2. The syringe device for administering drugs into the vitreous cavity of animals is provided with an indicator ring, a connecting rod and a scale. When the push rod is affected by a push force or a pull force, the push rod drives the indicator ring to move on the surface of the cartridge through the connecting rod. The distance moved by the indicator ring can be observed through the scale, and the amount of injected medicine can be checked conveniently, thereby avoiding the phenomenon of over-injection or under-injection of medicine. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural diagram of the utility model;
[0013] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the cartridge of the utility model;
[0014] Figure 3 For this utility model Figure 1 A in the middle is an enlarged structural diagram;
[0015] Figure 4 This is a three-dimensional structural diagram of the grip tube of the utility model;
[0016] In the figure: 1. Holding tube; 2. Cartridge; 3. Injection needle; 4. Push rod; 5. Guide rod; 6. Press plate; 7. Barrel stopper; 8. Indicator ring; 9. Moving plate; 10. Connecting rod; 11. Positioning rod; 12. Auxiliary plate; 13. Scale; 14. Fixed plate; 15. Torsion spring; 16. Slide groove. DETAILED DESCRIPTION
[0017] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.
[0018] like Figure 1-4 As shown, the present invention provides a technical solution: a syringe device for administering drugs into the vitreous cavity of an animal, comprising a gripping barrel 1 with a U-shaped cross-section, a drug cartridge 2 connected therein, an injection needle 3 connected to one end of the drug cartridge 2, and the injection needle 3 extending out of one end of the gripping barrel 1; a push rod 4 slidably connected to the drug cartridge 2, one end of which is connected to a barrel plug 7, which is located within the drug cartridge 2. The other end of the gripping barrel 1 extends through both sides of the gripping barrel 1 and is rotatably connected to a guide rod 5, one end of which is connected to a pressure plate 6, the other end of which is rotatably connected to a positioning rod 11 within a U-shaped groove; an auxiliary plate 12 is externally connected to the positioning rod 11, the other end of which is connected to the push rod 4 via a pin, enabling the auxiliary plate 12 to rotate about the pin.
[0019] When the pressure plate 6 is pressed, one side of the auxiliary plate 12 will rotate around the positioning rod 11, so that the positioning rod 11 plays a certain limiting role for the auxiliary plate 12, preventing the auxiliary plate 12 from colliding with the pressure plate 6 when moving, and the auxiliary plate 12 will drive the push rod 4 to move, and then the push rod 4 pushes the barrel plug 7 to achieve the purpose of supplying medicine.
[0020] The end of the push rod 4 away from the bung 7 is connected to a movable plate 9, which is connected to one end of a connecting rod 10, the other end of which is connected to an indicator ring 8. The indicator ring 8 is slidably connected to the outside of the cartridge 2, and a scale 13 is provided on the outside of the cartridge 2. When the indicator ring 8 moves with the push rod 4 via the connecting rod 10, the indicator ring 8 slides on the surface of the scale 13. The scale 13 allows the amount of drug injected into the syringe device to be observed and controlled.
[0021] A slide groove 16 is provided on the gripping tube 1, and a protruding slider is provided at the bottom of the movable plate 9, which is slidably connected in the slide groove 16. When the push rod 4 is subjected to a push or pull force, the movable plate 9 on the surface of the push rod 4 will slide in the slide groove 16, so that the slide groove 16 plays a certain guiding role for the movement of the movable plate 9, preventing the movable plate 9 from getting stuck during movement.
[0022] One end of the guide rod 5 is connected to a fixed disk 14, which is then connected to a torsion spring 15. One end of the torsion spring 15 is fixed to the gripping tube 1, and the other end is fixed to the fixed disk 14. The fixed disk 14 is connected to the outside of the gripping tube 1 via the torsion spring 15. When the pressure plate 6 is pressed, it rotates around the guide rod 5, causing the torsion spring 15 to deform, providing some support for the pressure plate 6. When the pressure plate 6 loses resistance, the torsion spring 15 resets it.
[0023] The working principle of this utility model is:
[0024] When the syringe device is injecting medicine into the vitreous cavity of an animal, the surface of the gripping tube 1 can be gripped by the palm of the hand, and then the injection needle 3 is inserted into the treatment site, and the thumb is used to press the pressure plate 6, and the pressure plate 6 will rotate around the guide rod 5. When the pressure plate 6 rotates, the fixed disk 14 will drive the torsion spring 15 to deform, and the auxiliary plate 12 under the pressure plate 6 will apply a thrust to the push rod 4, and the push rod 4 will drive the barrel plug 7 to slide in the cartridge 2, and the barrel plug 7 can inject the medicine in the cartridge 2 into the vitreous cavity through the injection needle 3, and when the push rod 4 moves, it will drive the movable plate 9 to move above the slide groove 16, and the movable plate 9 is connected to the indicator ring 8 by the connecting rod 10, so that the indicator ring 8 will move on the surface of the cartridge 2 with the barrel plug 7. When the injection is completed, the syringe device is separated from the vitreous cavity, and then when the pressure plate 6 is released, it will be reset by the torsion spring 15, and the push rod 4 will drive the barrel plug 7 to recover.
[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0026] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. A syringe device for administering drugs into the vitreous cavity of an animal, comprising a gripping tube (1) having a U-shaped cross section, characterized in that: The holding tube (1) is connected to a medicine cartridge (2), one end of the medicine cartridge (2) is connected to an injection needle (3), the injection needle (3) extends out of one end of the holding tube (1), the other end of the holding tube (1) passes through the two side wings of the holding tube (1) and is rotatably connected to a guide rod (5), one end of the guide rod (5) is connected to a pressure plate (6), a push rod (4) is slidably connected to the medicine cartridge (2), one end of the push rod (4) is connected to a barrel plug (7), and the barrel plug (7) is in the medicine cartridge (2). ), a positioning rod (11) is rotatably connected in the U-shaped groove at the other end of the pressure plate (6), and an auxiliary plate (12) is externally connected to the positioning rod (11). One end of the guide rod (5) is connected to a fixed disk (14), and a torsion spring (15) is externally connected to the guide rod (5). One end of the torsion spring (15) is fixed to the holding tube (1), and the other end of the torsion spring (15) is fixed to the fixed disk (14). The fixed disk (14) is connected to the outside of the holding tube (1) through the torsion spring (15).
2. The syringe device for administering drugs into the vitreous cavity of an animal according to claim 1, characterized in that: The medicine cartridge (2) is slidably sleeved with an indicator ring (8) on the outside, and a scale (13) is provided on the outside of the medicine cartridge (2).
3. The syringe device for administering drug into the vitreous cavity of an animal according to claim 2, characterized in that: The end of the push rod (4) away from the barrel plug (7) is connected to a movable plate (9), and the movable plate (9) is connected to one end of a connecting rod (10), and the other end of the connecting rod (10) is connected to an indicator ring (8).
4. The syringe device for administering drugs into the vitreous cavity of an animal according to claim 3, characterized in that: The auxiliary plate (12) is connected to the push rod (4), and the moving plate (9) is connected to the indicator ring (8) via a connecting rod (10).
5. The syringe device for administering drugs into the vitreous cavity of an animal according to claim 4, characterized in that: A sliding groove (16) is provided on the holding tube (1), and a protruding sliding block is provided on the bottom of the movable plate (9) and is slidably connected in the sliding groove (16).