A syringe and assembly

Abstract

This utility model provides a syringe and an assembly, wherein the syringe includes a connecting end, the connecting end includes at least one connector, the connector includes a front face and a rear face, and a channel connecting the front face and the rear face, the rear face is connected to a barrel, and the channel communicates with the interior of the barrel; the connector is divided into a front section and a rear section along the direction of the front face and the rear face, the front section connects the front face and the rear section in an increasing diameter manner; the surface of the front section is provided with a protrusion, the water pressure tube is guided through the front section and sleeved on the rear section, the protrusion on the front section provides anti-detachment resistance for the water pressure tube, thereby improving the stability of the connection between the water pressure tube and the connecting end.

Description

Technical Field

[0001] This utility model relates to the field of syringes, and more particularly to a syringe and assembly. Background Technology

[0002] During maxillary sinus lift surgery, the surgeon uses specialized instruments to prepare an implant socket in the alveolar bone. When approaching the floor of the maxillary sinus, the routine bone drilling is stopped. At this point, the surgeon uses a syringe connected to a surgical water pressure tubing to inject saline solution below the maxillary sinus floor bone wall. The pressure created by the liquid in the confined space causes the thinner bone plate of the maxillary sinus floor to gradually fracture upwards or undergo elastic displacement. Simultaneously, the upper maxillary sinus floor mucosa is also lifted, increasing the alveolar bone height and providing sufficient space for subsequent implant placement, ensuring the smooth progress of the implant surgery.

[0003] refer to Figure 1 The existing syringe comprises two main parts: a syringe assembly 100 and a piston assembly 200. The syringe assembly 100 consists of a connecting end 110 and a barrel 120. The piston assembly 200 includes a piston 210, a piston shaft 220, and a piston handle 230. The piston 210 moves within the barrel 120. In actual use, the doctor pulls the piston handle 230, causing the piston 210 to move within the barrel 120, thereby expelling the liquid within the barrel 120 through the connecting end 110. The connecting end 110 is used to connect a hydrostatic tubing to inject saline solution below the maxillary sinus floor.

[0004] The stability of the connection between connector 110 and the water pressure tube is crucial, as it directly determines the stability of the saline injection. If the connection is unstable, the connector and the water pressure tube may easily become loose. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a syringe and assembly that improves the stability of the connection between the connector and the water pressure pipe.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A syringe includes a connecting end, the connecting end comprising:

[0008] At least one connector, the connector including a front end face and a rear end face, and a channel connecting the front end face and the rear end face, the rear end face being connected to the cylinder body, and the channel communicating with the interior of the cylinder body;

[0009] The connector is divided into a front section and a rear section along the front and rear face directions, and the front section connects the front face and the rear section in a manner that increases in diameter;

[0010] The surface of the front section is provided with a protrusion.

[0011] In a preferred embodiment, the length of the front segment is less than the length of the rear segment.

[0012] In a preferred embodiment, an arc surface is provided between the front end face and the front segment.

[0013] In a preferred embodiment, the protrusion surrounds the surface of the front section along the circumferential direction of the front section.

[0014] In a preferred embodiment, the protrusion is annular or spiral in shape.

[0015] In a preferred embodiment, the protrusion is positioned adjacent to the rear section.

[0016] In a preferred embodiment, the diameter of the rear segment is equal at any cross-section along its length.

[0017] In a preferred embodiment, the number of joints is two, the two joints are connected in the axial direction of the joint, and the two joints are arranged from front to back with the diameter of the rear section increasing.

[0018] An assembly comprising the syringe of the above embodiment, further comprising:

[0019] A water pressure pipe is fitted onto the rear section of the connector, and the protrusion abuts against the inner wall of the water pressure pipe.

[0020] Compared with existing technologies, this technical solution has the following advantages:

[0021] The front section gradually expands the diameter of the water pressure pipe to guide the expansion of the pipe opening until the pipe opening is fitted onto the rear section. A protrusion on the front section is located near the rear section, providing anti-detachment resistance to the water pressure pipe, thereby improving the stability of the connection between the water pressure pipe and the connecting end and preventing them from becoming loose. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an existing syringe;

[0023] Figure 2 This is a schematic diagram of the connection end of the present invention.

[0024] In the diagram: 100 Syringe assembly, 110 Connecting end, 111 Connector, 111a Front end face, 111b Rear end face, 111c Front section, 111d Rear section, 111e Protrusion, 111f Arc surface, 120 Cylindrical body, 200 Piston assembly, 210 Piston, 220 Piston shaft, 230 Piston handle. Detailed Implementation

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0026] First Embodiment

[0027] Please refer to Figure 1 and Figure 2 An embodiment of this utility model provides a syringe, including a connecting end 110, the connecting end 110 comprising:

[0028] At least one connector 111, the connector 111 includes a front end face 111a and a rear end face 111b, and a channel connecting the front end face 111a and the rear end face 111b, the rear end face 111b is connected to the cylinder 120, and the channel communicates with the interior of the cylinder 120.

[0029] The connector 111 is divided into a front section 111c and a rear section 111d along the direction of the front end face 111a and the rear end face 111b. The front section 111c connects the front end face 111a and the rear section 111d in a manner that increases in diameter.

[0030] The surface of the front section 111c is provided with a protrusion 111e.

[0031] The front segment 111c is first inserted into the water pressure tube until the water pressure tube is fitted onto the rear segment 111d, thus completing the connection between the connector 111 and the water pressure tube. During this process, the front segment 111c connects the front end face 111a and the rear segment 111d with an increased diameter to guide the insertion of the water pressure tube. When the water pressure tube is fitted onto the rear segment 111d, the protrusion 111e on the front segment 111c abuts against the inner wall of the water pressure tube. This increases the contact area between the connector 111 and the water pressure tube, further improving the stability of the connection between the connector 111 and the water pressure tube. This prevents the connector 111 from becoming detached from the water pressure tube when the syringe injects saline solution through the water pressure tube below the maxillary sinus floor bone wall.

[0032] like Figure 2 As shown, the diameter of the rear section 111d is equal at any cross-section along its length, that is, the diameter of the rear section 111d is consistent, and the water pressure pipe can be uniformly fitted onto the rear section 111d in the elastic deformation state.

[0033] The water pressure tube is made of medical-grade plastic, which is elastic. In its non-elastically deformed state, the inner diameter of the water pressure tube is slightly smaller than the diameter of the rear section 111d. When connecting the water pressure tube to the connector 111, align the opening of the water pressure tube with the front section 111c and the rear section 111d, and apply force to insert the rear section 111d into the water pressure tube. This causes the opening of the water pressure tube to gradually expand, thus smoothly fitting onto the rear section 111d, ensuring a stable connection.

[0034] like Figure 2 As shown, since the front section 111c connects the front end face 111a and the rear section 111d in a manner that increases in diameter, that is, the front section 111c is conical, the water pressure pipe can be gradually enlarged to guide the pipe opening of the water pressure pipe to expand until the pipe opening of the water pressure pipe is fitted onto the rear section 111d.

[0035] The protrusion 111e on the front section 111c is located adjacent to the rear section 111d, and the protrusion 111e does not extend to the radially outer side of the rear section 111d. Therefore, the protrusion 111e does not affect the guiding function of the front section 111c on the water pressure pipe. Only when the water pressure pipe is about to contact the rear section 111d does the protrusion 111e make an interference fit with the inner wall of the water pressure pipe. At this time, the front section 111c has already completed its guiding function, and the protrusion 111e then provides anti-detachment resistance.

[0036] refer to Figure 2 The protrusion 111e surrounds the surface of the front segment 111c along the circumferential direction. The protrusion 111e may be annular, and there may be multiple protrusions. Alternatively, the protrusion 111e may be spiral.

[0037] The cross-section of the protrusion 111e is semi-circular.

[0038] Continue to refer to Figure 2 The length of the front section 111c is shorter than the length of the rear section 111d. It is evident that the shorter length of the front section 111c results in less obstruction to the water pressure pipe during the connection process, thus providing better guidance.

[0039] like Figure 2 As shown, an arc surface 111f is provided between the front end surface 111a and the front segment 111c. The arc transition replaces the right angle turn.

[0040] like Figure 2 As shown, there are two connectors 111, which are connected in the axial direction of the connectors 111, and are arranged from front to back with the diameter of the rear section 111d increasing.

[0041] The rear end face 111b of the first connector 111 is connected to the front end face 111a of the second connector 111, and the rear end face 111b of the second connector 111 is connected to the body 120, with their channels communicating. The rear section 111d of the first connector 111 has a smaller diameter, while the rear section 111d of the second connector 111 has a larger diameter. This design using two connectors 111 allows for the connection of water pressure pipes with two different diameters.

[0042] Second Embodiment

[0043] like Figure 1 and Figure 2 As shown, the assembly includes the syringe of the first embodiment, and further includes:

[0044] A water pressure pipe is sleeved on the rear section 111d of the connector 111, and the protrusion 111e abuts against the inner wall of the water pressure pipe.

[0045] The syringes are designed with different capacities, so the appropriate capacity syringe can be selected according to the usage needs.

[0046] The syringe is assembled as follows:

[0047] The inlet of the water pressure pipe is aligned with the front section 111c of the connector 111, and then a force is applied to insert the connector 111 into the inlet of the water pressure pipe so that the water pressure pipe is sleeved on the rear section 111d under the guiding action of the front section 111c. At this time, the protrusion 111e on the front section 111c provides anti-detachment resistance for the water pressure pipe.

[0048] Aspiration of saline solution: The distal end of the water pressure tube connected to the connector 111 is placed into the saline solution container. The piston handle 230 is pulled outward. Under negative pressure, the saline solution is drawn into the cylinder 120 through the water pressure tube and the connector 111.

[0049] Injection procedure: Position the distal end of the water pressure tube below the maxillary sinus floor bone wall, then push the piston handle 230 to allow the saline solution in the cylinder 120 to pass through the connector 111 and the water pressure tube until it is injected below the maxillary sinus floor bone wall.

[0050] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A syringe characterized by, The connecting end (110) comprises: at least one connector (111) comprising a front end surface (111a) and a rear end surface (111b), and a channel connecting the front end surface (111a) and the rear end surface (111b), the rear end surface (111b) being connected to the barrel (120), and the channel being in communication with the inside of the barrel (120); the connector (111) is divided into a front section (111c) and a rear section (111d) along the front end surface (111a) and the rear end surface (111b), the front section (111c) being connected to the rear section (111d) in a manner of increasing diameter; a surface of the front section (111c) is provided with a protruding part (111e).

2. The syringe of claim 1, wherein The length of the front section (111c) is less than the length of the rear section (111d).

3. The syringe of claim 1, wherein An arc surface (111f) is provided between the front end surface (111a) and the front section (111c).

4. The syringe of claim 1, wherein The protruding part (111e) is circumferentially arranged on the surface of the front section (111c).

5. The syringe of claim 1, wherein The protruding part (111e) is annular or spiral.

6. The syringe of claim 1, wherein The protruding part (111e) is arranged adjacent to the rear section (111d).

7. The syringe of claim 1, wherein The diameter of the rear section (111d) is equal at any cross section along the length direction of the rear section (111d).

8. The syringe of claim 1, wherein The number of the connectors (111) is two, the two connectors (111) are connected in the axial direction of the connector (111), and the two connectors (111) are arranged from front to back in a manner of increasing diameter of the rear section (111d).

9. An assembly characterized by, The combination comprises the syringe according to any one of claims 1 to 8, and further comprises: a water pressure pipe, the water pressure pipe being sleeved on the rear section (111d) of the connector (111), and the protruding part (111e) abutting against the inner wall of the water pressure pipe.

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