Gun type paste injection device

Abstract

The utility model relates to the field of dental root canal treatment instruments, in particular to a gun type paste injection device. The gun type paste injection device comprises a paste gun assembly serving as a power device, a paste capsule assembly and a paste needle head assembly, a gun handle and a gun body are formed in the paste gun assembly in an injection molding mode, a bolt-shaped extrusion rod is arranged in a cavity of the gun body, the gun handle is connected with the gun body through a pin, one end of the gun handle abuts against one end of the extrusion rod, a spring is arranged on the extrusion rod in a sleeved mode, and the extrusion rod is connected with the power device. A plane groove used for fixing a paste capsule assembly is formed in the front end of the gun body, namely the other end of the extrusion rod, a hole connected with the other end of the extrusion rod is formed in the end of the paste capsule assembly, and the front end of the paste capsule assembly is connected with a paste needle assembly. According to the gun type paste injection device, the injection gun structure is adopted, the axial injection force can be greatly reduced, the operation threshold is lowered, and the operation experience of doctors is greatly improved.

Description

Technical Field

[0001] The utility model relates to an injection device, in particular to a gun-type paste injection device. Background Art

[0002] At present, root canal treatment is usually filled and sealed with a combination of gutta-percha tips and paste. This type of filling has high requirements for the size of the gutta-percha tips. Given the manual processing and shaping of the gutta-percha tips, large size differences result in insufficient or even overfilling of the root canals, exposing the tooth roots and easily causing failure of the root canal treatment. Internationally, it is becoming increasingly popular to use high-viscosity pastes to directly fill the root canals. The advantage is that the paste in a fluid state can adapt to the shape of the root canals and completely fill the root canals. Even if overfilling occurs, the calcium hydroxide component in the paste can be absorbed by human tissue and will not affect the effect of the root canal treatment. The viscosity of existing pastes is relatively low, and the commonly used injection method is to use a hand syringe for push injection. After the high-viscosity paste is introduced, the hand syringe is no longer fully capable of the injection task. Utility Model Content

[0003] The utility model aims to solve the above-mentioned defects and provides a gun-type paste injection device.

[0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve its technical problems is: this gun-type paste injection device includes a paste gun assembly as a power device, a paste capsule assembly and a paste needle assembly, the paste gun assembly includes an injection-molded gun handle and a gun body, a bolt-shaped extrusion rod is provided in the cavity of the gun body, the gun handle is connected to the gun body through a pin, and one end of the gun handle is against one end of the extrusion rod, a spring is sleeved on the extrusion rod, and a flat groove for fixing the paste capsule assembly is provided at the front end of the gun body, that is, the other end of the extrusion rod, the end of the paste capsule assembly is provided with a hole connected to the other end of the extrusion rod, and the front end of the paste capsule assembly is connected to the paste needle assembly.

[0005] According to another embodiment of the present invention, the paste capsule assembly further includes a capsule body, one end of the capsule body is provided with a boss, the other end is provided with a Luer connector male thread, the inner hole of the capsule body is used to store the paste, and a capsule piston is provided in the inner hole of the capsule body.

[0006] According to another embodiment of the present invention, the front end of the capsule body is further provided with a silicone cap for sealing the paste during storage and preventing the paste in the capsule body from solidifying.

[0007] According to another embodiment of the present invention, the capsule piston is a cylinder with two convex rings on its surface.

[0008] According to another embodiment of the present invention, the paste needle assembly further includes a needle seat and a needle tube, the needle seat and the needle tube are bonded by glue, the needle seat is an injection molded part, one end of which is connected to the needle tube and the other end is provided with a Luer connector female thread, the needle tube is made of stainless steel, and a long slot-shaped side opening is provided near the end, and the end is welded closed.

[0009] The beneficial effects of the utility model are as follows: the gun-type paste injection device adopts an injection gun structure, which can greatly reduce the axial injection force, lower the operating threshold, and greatly improve the doctor's operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 It is a structural schematic diagram of the three-dimensional diagram of the utility model;

[0012] Figure 2 It is a schematic structural diagram of a cross-sectional view of the utility model;

[0013] Figure 3 yes Figure 2 Schematic diagram of the structure of the paste gun assembly;

[0014] Figure 4 yes Figure 2 Schematic diagram of the structure of the paste capsule assembly and the paste needle assembly;

[0015] Figure 5 yes Figure 4 Schematic diagram of the structure of the middle capsule piston;

[0016] Among them: 1. Paste gun assembly, 2. Paste capsule assembly, 3. Paste needle assembly, 4. Gun handle, 5. Gun body, 6. Pin, 7. Extrusion rod, 8. Spring, 9. Flat groove, 10. Capsule piston, 11. Capsule body, 12. Silicone cap, 13. Needle tube, 14. Side opening, 15. Needle seat, 16. Convex ring. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, but not all of them. The embodiments of the basic utility model and all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present utility model.

[0018] like Figure 1 、 2As shown in the figure, the paste gun assembly 1 as a power device, the paste capsule assembly 2 and the paste needle assembly 3 are included. The paste gun assembly 1 includes an injection-molded gun handle 4 and a gun body 5. A bolt-shaped extrusion rod 7 is provided in the cavity of the gun body 5. The gun handle 4 is connected to the gun body 5 through a pin 6, and one end of the gun handle 4 is against one end of the extrusion rod 7. A spring 8 is sleeved on the extrusion rod 7. The front end of the gun body 5, that is, the other end of the extrusion rod 7, is provided with a flat groove 9 for fixing the paste capsule assembly 2. The end of the paste capsule assembly 2 is provided with a hole connected to the other end of the extrusion rod 7. The front end of the paste capsule assembly 2 is connected to the paste needle assembly 3. The gun body 5 is an injection-molded part, and the gun head has a flat groove 9, which is used to fix the paste capsule assembly 2 to prevent it from falling out; the gun handle 4 is also an injection-molded part, which is connected to the gun body 5 by a pin. When the paste is injected, an injection force is applied to one end of the gun handle 4. According to the lever principle, the other end of the gun handle 4 pushes the extrusion rod 7 to make an axial linear displacement; the extrusion rod 7 is also an injection-molded part, which is installed in the corresponding hole of the gun body 5, one end of which is in contact with the gun handle 4, and the other end is connected to the paste capsule assembly 2; the spring 8 is used to realize the self-recovery action of the extrusion rod 7, one end of which is sleeved on the step shaft of the extrusion rod, and the other end is in contact with the gun body 5.

[0019] like Figure 4 As shown, the paste capsule assembly 2 is used to store high-viscosity paste. The paste capsule assembly 2 includes a capsule body 11. The high-viscosity paste is stored in the capsule body 11. A boss is provided at one end of the capsule body 11 and a Luer connector male thread is provided at the other end. The inner hole of the capsule body 11 is used to store the paste, and a capsule piston 10 is provided in the inner hole of the capsule body 11.

[0020] The front end of the capsule body 11 is sleeved with a silicone cap 12 for sealing the paste during storage and preventing the paste in the capsule body from solidifying.

[0021] The capsule piston 10 is installed in the hole of the paste capsule body. The capsule piston 10 is a cylinder with two convex rings 16 on its cylinder surface. The two convex rings ensure that the paste does not leak and ensure that the sliding resistance is not particularly high. Figure 5 shown.

[0022] like Figure 4 As shown, the paste needle assembly 3 is used to realize the paste injection function during root canal treatment. The paste needle assembly 3 includes a needle seat 15 and a needle tube 13. The needle seat 15 and the needle tube 13 are bonded by glue. The needle seat 15 is an injection molded part, one end of which is connected to the needle tube 13 and the other end is provided with a Luer connector female thread. The needle tube 13 is made of stainless steel and is provided with a long slot-shaped side opening 14 near the end, and the end is welded closed.

[0023] Figure 1 The gun-type paste injection device is used for root canal paste filling during root canal treatment. The specific operation process is as follows:

[0024] Step 1: Take out the complete packaged paste capsule assembly and remove the silicone cap;

[0025] Step 2: Take out the paste needle assembly, screw the paste needle assembly into the thread of the paste capsule assembly, and tighten it;

[0026] Step 3: Install the fully assembled components from step 2 into the groove of the paste gun assembly head, while ensuring that the extrusion rod extends into the hole in the paste capsule body;

[0027] Step 4: Place the end of the paste needle into the root canal with the injection paste, push the handle of the paste gun, and the paste will flow out from the hole at the end of the needle;

[0028] Step 5: Use a vertical press to repeatedly press and adjust the filled paste until the entire root canal is filled.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gun-type paste injection device, comprising a paste gun assembly (1) as a power device, a paste capsule assembly (2) and a paste needle assembly (3), characterized in that: The paste gun assembly (1) comprises an injection-molded gun handle (4) and a gun body (5), wherein a bolt-shaped extrusion rod (7) is provided in the cavity of the gun body (5), the gun handle (4) is connected to the gun body (5) via a pin (6), and one end of the gun handle (4) abuts against one end of the extrusion rod (7), a spring (8) is sleeved on the extrusion rod (7), and a planar groove (9) for fixing the paste capsule assembly (2) is provided at the front end of the gun body (5), i.e., the other end of the extrusion rod (7), and a hole for connecting to the other end of the extrusion rod (7) is provided at the end of the paste capsule assembly (2), and the front end of the paste capsule assembly (2) is connected to the paste needle assembly (3).

2. The gun-type paste injection device according to claim 1, characterized in that: The paste capsule assembly (2) comprises a capsule body (11), one end of the capsule body (11) is provided with a boss and the other end is provided with a Luer connector male thread, the inner hole of the capsule body (11) is used to store the paste, and a capsule piston (10) is provided in the inner hole of the capsule body (11).

3. The gun-type paste injection device according to claim 2, characterized in that: The front end of the capsule body (11) is sleeved with a silicone cap (12) for sealing the paste during storage and preventing the paste in the capsule body from solidifying.

4. The gun-type paste injection device according to claim 2, characterized in that: The capsule piston (10) is a cylinder with two convex rings (16) on its surface.

5. The gun-type paste injection device according to claim 1, characterized in that: The paste needle assembly (3) comprises a needle seat (15) and a needle tube (13), wherein the needle seat (15) and the needle tube (13) are bonded together by glue. The needle seat (15) is an injection molded part, one end of which is connected to the needle tube (13) and the other end of which is provided with a Luer connector female thread. The needle tube (13) is made of stainless steel and is provided with a long slot-shaped side opening (14) near the end, and the end is welded closed.

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