Propelling structure of high-pressure injector

Abstract

The utility model relates to the field of medical instruments, and discloses a propelling structure of a high-pressure injector, the propelling structure comprises an injection needle cylinder, a piston is arranged in the injection needle cylinder, a hollow circular limiting ring is fixedly mounted on the top surface of the piston, four rectangular holes are formed in the outer surface of the hollow circular limiting ring in a circumferential array mode, and the rectangular holes are communicated with the piston. An operator firstly needs to insert a clamping plate into a rectangular hole and then rotate a piston, so that the outer surface of a hollow circular limiting ring penetrates through a preset clamping groove, the hollow circular limiting ring effectively limits the clamping plate, and it is ensured that when the clamping plate does not correspond to the rectangular hole, a mounting column cannot be disassembled; when the piston needs to be dismounted, a worker only needs to rotate the clamping plate in the reverse direction to make the clamping plate make contact with the second baffle, the clamping plate corresponds to the rectangular hole through the operation, then the operator can pull the mounting column and the push rod upwards, the piston is easily dismounted, no complex tool is needed in the piston mounting and dismounting process, operation is easy and convenient, and working efficiency is effectively improved.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and specifically relates to a propulsion structure of a high-pressure syringe. Background Art

[0002] A high-pressure syringe is a medical device used to quickly and accurately inject drugs or biological solutions. Compared with conventional syringes, high-pressure syringes have higher injection pressure and larger injection volume. Its main propulsion structure includes an electric push rod, a push rod, a syringe barrel and a piston. The electric push rod is the power source of the high-pressure syringe. The push rod is driven forward by electricity. The push rod connects the electric push rod and the piston, effectively transmitting the power of the electric push rod to the piston. The syringe barrel is used to store the drug or biological solution to be injected, and the piston reciprocates in the syringe barrel under the action of the push rod, pushing the drug or biological solution out of the syringe barrel and quickly injecting it into the patient's body through the needle or used for other medical operations.

[0003] For example, a high-pressure angiography syringe syringe with announcement number CN215875747U relates to the field of medical devices, including a syringe main body, a piston connected to the interior of the syringe main body, a replacement assembly and a mounting bracket respectively provided on the top of the piston, slide rails connected on both sides of the mounting bracket, a slider connected inside the slide rail, and mounting columns connected on both sides of the top of the piston. The utility model uses a rotating shaft, a protective plate, a torsion spring, a limit groove, a limit block and a storage groove. First, the needle is fixed by the cooperation of the limit plate, the protective plate and the limit groove so that the needle will not fall off when it penetrates the patient's body. Then, the piston moves downward to make the rubber sleeve touch the needle, so that the needle is subjected to a downward force. After the force is applied, the needle moves downward. After the needle moves downward, the limit block cannot touch the limit plate, thereby ending the limitation of the limit plate. At the same time, the torsion spring drives the limit plate into the storage groove through the rotating shaft to end the limitation of the needle, thereby preventing the syringe and needle from being used twice.

[0004] However, during actual use, it was discovered that when removing the piston, the device required personnel to use a magnet to attract the iron block, so that the block would slide in the chute. Since the thickness of the other side of the block was less than the thickness of the groove, the piston lost its support and fell.

[0005] However, since the piston is connected to the push rod, tools such as magnets are needed during the disassembly process. This process is relatively cumbersome and not convenient enough. Therefore, a propulsion structure of a high-pressure syringe is provided. Utility Model Content

[0006] The purpose of this application is to provide a propulsion structure for a high-pressure injector in order to solve the above-mentioned problems.

[0007] The technical solution adopted in this application is as follows: A propulsion structure of a high-pressure syringe, comprising an injection syringe, a piston is provided inside the injection syringe, a hollow circular limit ring is fixedly installed on the top surface of the piston, the outer surface of the hollow circular limit ring is provided with four rectangular holes in a circumferential array, a mounting column is provided on the top surface of the hollow circular limit ring, a push rod is fixedly installed on the top end of the mounting column, four clamping plates corresponding to the rectangular holes are fixedly installed on the outer surface of the mounting column, the bottom end of the clamping plate is inserted into the inside of the rectangular hole, a clamping groove is provided on one side of the clamping plate, a plurality of baffles 1 are fixedly installed on the outer surface of the hollow circular limit ring, and a baffle 2 is fixedly installed on the outer surface of the hollow circular limit ring located on the side of the rectangular hole.

[0008] In a preferred embodiment, a center positioning hole is provided on the top surface of the piston and located inside the hollow circular limiting ring. A center positioning column corresponding to the center positioning hole is fixedly installed on the bottom surface of the mounting column, and the center positioning column is inserted into the center positioning hole.

[0009] In a preferred embodiment, a rubber stopper is provided on the bottom surface of the piston.

[0010] In a preferred embodiment, two arc-shaped blocks are installed on the outer surface of the injection syringe in a circumferential array.

[0011] In a preferred embodiment, a circular shielding plate is fixedly mounted on the outer surface of the injection syringe below the arc-shaped clamping block.

[0012] In a preferred embodiment, a scale is fixedly mounted on the outer surface of the injection syringe.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0014] 1. In the present application, due to the adoption of the above-mentioned scheme, the operator first needs to insert the card plate into the inside of the rectangular hole. Next, the operator rotates the piston so that the outer surface of the hollow circular limiting ring passes through the preset card groove. This process enables the hollow circular limiting ring to effectively limit the card plate, ensuring that the mounting column cannot be removed when the card plate does not correspond to the rectangular hole. Since the push rod pushes the piston to move back and forth, the limiting effect of the hollow circular limiting ring on the card plate maintains its stability, so that the piston will not easily detach. When the piston needs to be removed, the operator only needs to rotate the card plate in the opposite direction so that the card plate contacts the baffle 2. This operation makes the card plate correspond to the rectangular hole, and then the operator can pull up the mounting column and the push rod to easily remove the piston. The installation and removal process of the piston does not require complicated tools, is easy to operate, and effectively improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of the injection syringe of this application;

[0017] Figure 3 This is a schematic diagram of the hollow circular limiting ring structure of this application;

[0018] Figure 4 This is a schematic diagram of the structure of the rubber stopper not installed in this application.

[0019] Markings in the figure: 1. Injection syringe; 2. Piston; 3. Hollow circular limit ring; 4. Rectangular hole; 5. Mounting column; 6. Push rod; 7. Clamping plate; 8. Clamping slot; 9. Baffle 1; 10. Baffle 2; 11. Center positioning hole; 12. Center positioning column; 13. Rubber stopper; 14. Arc-shaped clamping block; 15. Circular baffle; 16. Scale. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] refer to Figure 1-Figure 4 , a propulsion structure of a high-pressure syringe, including a syringe 1, a piston 2 is provided inside the syringe 1, and a rubber plug 13 is provided on the bottom surface of the piston 2; the rubber plug 13 is clamped on the bottom surface of the piston 2 to form an integral component, such a design helps to tightly combine the piston 2 and the rubber plug 13 to ensure that they will not separate during the pushing process. When this integral component is used to push the liquid medicine in the syringe 1, due to the close fit between them, the liquid medicine can be effectively pushed from the syringe 1 into the patient's body. This design simplifies the operation process and improves the efficiency and accuracy of the injection. At the same time, the material of the rubber plug 13 has good elasticity and sealing properties, which can ensure that there will be no leakage or seepage during the pushing process.

[0022] refer to Figure 1 、 Figure 2 and Figure 3 A hollow circular limiting ring 3 is fixedly installed on the top surface of the piston 2, and the surface of the hollow circular limiting ring 3 is provided with four rectangular holes 4 in a circular array; the middle part of the hollow circular limiting ring 3 is a hollow structure, and the setting of the hollow circular limiting ring 3 facilitates the opening of the four rectangular holes 4.

[0023] refer to Figure 1 、 Figure 2 and Figure 3 The top surface of the hollow circular limit ring 3 is provided with a mounting column 5, and a push rod 6 is fixedly installed on the top of the mounting column 5. Four clamping plates 7 corresponding to the rectangular holes 4 are fixedly installed on the outer surface of the mounting column 5, and the bottom end of the clamping plate 7 is inserted into the inside of the rectangular hole 4; the mounting column 5 is provided to facilitate the installation and fixation of the four clamping plates 7, which is convenient for subsequent connection with the piston 2. The other end of the push rod 6 is fixed to the electric push rod, which makes it convenient for the electric push rod to drive the push rod 6, the mounting column 5 and the piston 2 to reciprocate inside the injection syringe 1.

[0024] refer to Figure 1 、 Figure 3 A card slot 8 is provided on one side of the card plate 7, and a plurality of baffles 9 are fixedly installed on the outer surface of the hollow circular limiting ring 3. The outer surface of the hollow circular limiting ring 3 is located on the side of the rectangular hole 4 and is fixedly installed with a baffle 2 10; through the provided baffles 1 9 and 10, when the card plate 7 is inserted into the inside of the rectangular hole 4, the personnel rotates the piston 2. When the piston 2 rotates, the outer surface of the hollow circular limiting ring 3 will pass through the card slot 8, so that the card plate 7 contacts one side of the baffle 1 9 to limit it, and the hollow circular limiting ring 3 will limit the card plate 7, so that the mounting column 5 cannot be disassembled when the card plate 7 does not correspond to the rectangular hole 4.

[0025] refer to Figure 1 、 Figure 3 The top surface of the piston 2 is located inside the hollow circular limiting ring 3 and is provided with a center positioning hole 11. The bottom surface of the mounting column 5 is fixedly installed with a center positioning column 12 corresponding to the center positioning hole 11. The center positioning column 12 is inserted into the inside of the center positioning hole 11. By matching the set center positioning hole 11 and the center positioning column 12, it is convenient to position and install the piston 2 and the mounting column 5.

[0026] refer to Figure 1 The outer surface of the injection syringe 1 is equipped with two arc-shaped blocks 14 in a circular array, and a circular baffle 15 is fixedly installed on the outer surface of the injection syringe 1 below the arc-shaped block 14. A scale 16 is fixedly installed on the outer surface of the injection syringe 1; the arc-shaped block 14 is provided to facilitate the connection between the injection syringe 1 and the high-pressure syringe, so that it is convenient to install the injection syringe 1 on the high-pressure syringe, and the circular baffle 15 is provided to facilitate the shielding and sealing of the connection between the injection syringe 1 and the high-pressure syringe, and at the same time, it can also play a role in limiting. The scale 16 is provided to facilitate personnel to observe the liquid level inside the injection syringe 1.

[0027] The implementation principle of the propulsion structure embodiment of the high-pressure syringe of the present application is as follows: when the piston 2 needs to be installed, the operator first needs to align the multiple clamping plates 7 with the multiple rectangular holes 4 on the injection syringe 1, and then insert them. Next, the operator rotates the piston 2 so that the outer surface of the hollow circular limiting ring 3 passes through the preset clamping groove 8. As the piston 2 continues to rotate, the clamping plate 7 will contact one side of the baffle 9. This process enables the hollow circular limiting ring 3 to effectively limit the clamping plate 7, ensuring that when the clamping plate 7 does not correspond to the rectangular hole 4, the mounting column 5 cannot be removed. The push rod 6 drives the piston 2 to reciprocate inside the injection syringe 1 to push the liquid medicine into the patient's body. Since the push rod 6 pushes the piston 2 to reciprocate back and forth, the limiting effect of the hollow circular limiting ring 3 on the clamping plate 7 maintains its stability, so that the piston 2 will not be easily disengaged;

[0028] When the piston 2 needs to be disassembled, the operator only needs to rotate the card plate 7 in the opposite direction so that the card plate 7 contacts the baffle 2 10. This operation makes the card plate 7 correspond to the rectangular hole 4, and then the operator can pull up the mounting column 5 and the push rod 6 to easily disassemble the piston 2. The installation and disassembly process of the piston 2 does not require complicated tools, and the operation is simple, which effectively improves work efficiency. The design of the hollow circular limit ring 3 and the card plate 7 ensures the stability of the piston 2 during the injection process, and also facilitates its disassembly and installation.

[0029] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A propulsion structure for a high-pressure syringe, comprising a syringe barrel (1), characterized in that: The injection syringe (1) is provided with a piston (2) inside, and a hollow circular limiting ring (3) is fixedly installed on the top surface of the piston (2), and the outer surface of the hollow circular limiting ring (3) is provided with four rectangular holes (4) in a circular array, and the top surface of the hollow circular limiting ring (3) is provided with a mounting column (5), and a push rod (6) is fixedly installed on the top of the mounting column (5), and four clamping plates (7) corresponding to the rectangular holes (4) are fixedly installed on the outer surface of the mounting column (5), and the bottom end of the clamping plate (7) is inserted into the inside of the rectangular hole (4), and a clamping groove (8) is opened on one side of the clamping plate (7), and a plurality of baffles (9) are fixedly installed on the outer surface of the hollow circular limiting ring (3), and a baffle (10) is fixedly installed on the outer surface of the hollow circular limiting ring (3) located on the side of the rectangular hole (4).

2. A propulsion structure for a high-pressure injector according to claim 1, characterized in that: The top surface of the piston (2) is located inside the hollow circular limiting ring (3) and is provided with a center positioning hole (11). The bottom surface of the mounting column (5) is fixedly provided with a center positioning column (12) corresponding to the center positioning hole (11). The center positioning column (12) is inserted into the center positioning hole (11).

3. The propulsion structure of a high-pressure injector according to claim 1, characterized in that: A rubber stopper (13) is provided on the bottom surface of the piston (2).

4. A propulsion structure for a high-pressure injector according to claim 1, characterized in that: Two arc-shaped clamping blocks (14) are installed on the outer surface of the injection syringe (1) in a circumferential array.

5. A propulsion structure for a high-pressure injector according to claim 4, characterized in that: A circular shielding plate (15) is fixedly mounted on the outer surface of the injection syringe (1) below the arc-shaped clamping block (14).

6. The propulsion structure of a high-pressure injector according to claim 1, characterized in that: A scale (16) is fixedly mounted on the outer surface of the injection syringe (1).

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