Protective dental injection needle

Abstract

The utility model provides a protective dental injection needle which comprises a needle seat, a needle cylinder and a containing cylinder, one end of the containing cylinder is fixedly connected with the needle cylinder, the other end of the containing cylinder is fixedly connected with the needle seat, a needle head is fixedly inserted in the needle seat, one end of the needle head extends out of the needle seat, and the other end of the needle head is basically flush with the outer end of the needle cylinder after passing through the containing cylinder. The needle head extending out of the needle base is sleeved with a needle cap connected with the needle base in an inserted mode, internal threads are arranged on the hollow inner wall of the needle cylinder, an elastic sleeve is fixedly arranged on the surface of the end, adjacent to the containing cylinder, of the needle base, and the elastic sleeve covers the needle head which is basically flush with the outer end of the needle cylinder after passing through the containing cylinder. In the whole process of connection and separation of the protective dental injection needle and the metal injector, medical staff cannot touch the sharp needle point, so that the medical staff is protected, the condition of pricking injury is avoided, the occupational exposure risk of the medical staff is effectively reduced, and the protective dental injection needle is safer and more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a protective dental injection needle. Background Art

[0002] A dental needle currently used in stomatology is mainly used to connect with the metal syringe thread to inject local anesthetics such as mepivacaine and bilan. Figure 3 As shown. During use, medical personnel manually align the plastic cap of a pre-placed medicine bottle with the metal syringe, then twist and tighten the shorter end of the needle onto the metal syringe. After use, the medical personnel must manually detach the shorter end of the needle. However, the inventors of this application discovered through clinical nursing that due to the sharp tips at both ends of this dental needle, medical personnel can easily be injured during both connection and detachment, posing a significant occupational exposure risk. Therefore, improvements are urgently needed. Utility Model Content

[0003] In order to solve the technical problem that the existing dental injection needle has very sharp tips at both ends during the process of being threadedly connected to the metal syringe, which can easily cause medical staff to be injured during connection and separation, resulting in a very high risk of occupational exposure, the utility model provides a protective dental injection needle.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A protective dental injection needle comprises a needle seat and a syringe, and also comprises an accommodating cylinder, one end of the accommodating cylinder is fixedly connected to the syringe, and the other end of the accommodating cylinder is fixedly connected to the needle seat, a needle head is fixedly inserted in the needle seat, one end of the needle head extends out of the needle seat, and the other end of the needle head is basically flush with the outer end of the syringe after passing through the accommodating cylinder, the needle head extending out of the needle seat is covered with a needle cap which is inserted into the needle seat, an internal thread is provided on the hollow inner wall of the syringe, and an elastic sleeve is fixedly provided on the surface of one end of the needle seat adjacent to the accommodating cylinder, and the elastic sleeve covers the needle head which is basically flush with the outer end of the syringe after passing through the accommodating cylinder.

[0006] Compared with the prior art, when the protective dental injection needle provided by the present invention is used, the medical staff first holds the needle seat to drive the internal thread on the inner wall of the syringe to rotate and connect with the metal syringe thread. During the process of thread rotation and connection, the needle tip covered by the elastic sleeve contacts the plastic cap of the medicine bottle. As the medical staff continues to rotate the thread connection, the needle tip in the elastic sleeve will pierce the elastic sleeve and the plastic cap in turn, and finally extend into the medicine bottle, thereby completing the docking of the needle tip with the medicine in the medicine bottle. After the elastic sleeve is pierced by the needle tip, the elastic sleeve will gradually be compressed and stored in the accommodating cylinder, and then the needle tip extending out of the needle seat will be The needle cap on the syringe can be removed to start the puncture injection; after the puncture injection is completed, the medical staff only needs to hold the needle seat to drive the internal thread on the inner wall of the syringe and the metal syringe to rotate in the opposite direction to achieve the separation of the protective dental injection needle and the metal syringe. After that, the elastic sleeve stored in the accommodating cylinder will automatically rebound and recover, and cover the needle tip that is basically flush with the outer end of the syringe after passing through the accommodating cylinder. During the entire connection and separation process, the medical staff will not touch the sharp needle tip, thereby protecting the medical staff and preventing puncture injuries, effectively reducing the risk of occupational exposure, and being safer and more practical.

[0007] Furthermore, the elastic sleeve is provided with a needle hole corresponding to the needle tip that is substantially flush with the outer end of the syringe.

[0008] Furthermore, the elastic sleeve is a rubber sleeve or a latex sleeve.

[0009] Furthermore, the needle seat, needle cylinder and accommodating cylinder are integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of the protective dental injection needle provided by the utility model.

[0011] Figure 2 yes Figure 1 Schematic diagram of the structure of the medium-protected dental injection needle and the metal syringe threaded rotation connection elastic sleeve after being compressed.

[0012] Figure 3 It is a schematic diagram of the structure of a dental injection needle involved in the prior art.

[0013] In the figure, 1, needle seat; 2, syringe; 21, internal thread; 3, accommodating cylinder; 4, needle; 5, needle cap; 6, elastic sleeve; 61, needle hole. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0015] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "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 the specific circumstances.

[0017] Please refer to Figure 1 and Figure 2 As shown, the utility model provides a protective dental injection needle, including a needle base 1 and a syringe 2, and also includes a receiving tube 3, one end of the receiving tube 3 is fixedly connected to the syringe 2, and the other end of the receiving tube 3 is fixedly connected to the needle base 1, and a needle 4 is fixedly inserted in the needle base 1, one end of the needle 4 extends out of the needle base 1, and the other end of the needle 4 is basically flush with the outer end of the syringe 2 after passing through the receiving tube 3, that is, the other end of the needle 4 is located inside the syringe 2 and does not extend out, and the needle extending out of the needle base 1 is fixedly inserted into the needle base 1. A needle cap 5 is provided which is plugged into the needle seat 1 to protect the other end of the needle extending from the needle seat 1. An internal thread 21 is provided on the hollow inner wall of the syringe 2, which is used for threaded rotation connection with the metal syringe. An elastic sleeve 6 is fixedly provided on the end surface of the needle seat 1 adjacent to the accommodating cylinder 3. The elastic sleeve 6 covers the needle 4 which is basically flush with the outer end of the syringe 2 after passing through the accommodating cylinder 3, thereby wrapping the needle 4 which is basically flush with the outer end of the syringe 2 after passing through the accommodating cylinder 3 to avoid exposure.

[0018] Compared with the prior art, when the protective dental injection needle provided by the present invention is used, the medical staff first holds the needle seat to drive the internal thread on the inner wall of the syringe to rotate and connect with the metal syringe thread. During the process of thread rotation and connection, the needle tip covered by the elastic sleeve contacts the plastic cap of the medicine bottle. As the medical staff continues to rotate the thread connection, the needle tip in the elastic sleeve will pierce the elastic sleeve and the plastic cap in turn, and finally extend into the medicine bottle, thereby completing the docking of the needle tip with the medicine in the medicine bottle. After the elastic sleeve is pierced by the needle tip, the elastic sleeve will gradually be compressed and stored in the accommodating cylinder, and then the needle tip extending out of the needle seat will be The needle cap on the syringe can be removed to start the puncture injection; after the puncture injection is completed, the medical staff only needs to hold the needle seat to drive the internal thread on the inner wall of the syringe and the metal syringe to rotate in the opposite direction to achieve the separation of the protective dental injection needle and the metal syringe. After that, the elastic sleeve stored in the accommodating cylinder will automatically rebound and recover, and cover the needle tip that is basically flush with the outer end of the syringe after passing through the accommodating cylinder. During the entire connection and separation process, the medical staff will not touch the sharp needle tip, thereby protecting the medical staff and preventing puncture injuries, effectively reducing the risk of occupational exposure, and being safer and more practical.

[0019] As a specific example, please refer to Figure 1 As shown, the elastic sleeve 6 is provided with a needle hole 61 at the needle tip of the needle 4 which is substantially flush with the outer end of the syringe 2. Thus, during the continuous threaded rotation connection process by medical personnel, the needle tip in the elastic sleeve 4 can pass through the elastic sleeve 6 from the needle hole 61 more quickly, thereby improving the progress of the threaded rotation connection between the protective dental injection needle and the metal syringe.

[0020] As a specific embodiment, the elastic sleeve 6 is a rubber sleeve or a latex sleeve. The elastic sleeve 6 made from such a rubber sleeve has good elasticity and can well meet the protection requirements of the dental injection needle.

[0021] As a specific embodiment, the needle seat 1, the syringe 2 and the accommodating cylinder 3 are integrally formed. The protective dental injection needle thus manufactured has good strength and can meet actual use requirements.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A protective dental injection needle, comprising a needle holder (1) and a syringe (2), characterized in that: The invention also comprises a receiving tube (3), one end of which is fixedly connected to the syringe (2), and the other end of which is fixedly connected to the needle seat (1). A needle (4) is fixedly inserted in the needle seat (1), one end of which extends out of the needle seat (1), and the other end of which is substantially flush with the outer end of the syringe (2) after passing through the receiving tube (3). A needle cap (5) which is plugged into the needle seat (1) is sleeved on the needle (4) extending out of the needle seat, and an internal thread (21) is provided on the hollow inner wall of the syringe (2). An elastic sleeve (6) is fixedly provided on the surface of one end of the needle seat (1) adjacent to the receiving tube (3), and the elastic sleeve (6) covers the needle (4) which is substantially flush with the outer end of the syringe (2) after passing through the receiving tube (3).

2. The protective dental injection needle according to claim 1, characterized in that: The elastic sleeve (6) is provided with a needle hole (61) corresponding to the needle tip of the needle (4) which is substantially flush with the outer end of the syringe (2).

3. The protective dental injection needle according to claim 1, characterized in that: The elastic sleeve (6) is a rubber sleeve or a latex sleeve.

4. The protective dental injection needle according to claim 1, characterized in that: The needle seat (1), needle cylinder (2) and accommodating cylinder (3) are integrally formed.

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