Injection needle

Abstract

The utility model relates to an injection needle which comprises a shell and a needle seat. One side of the shell is provided with at least one axially extending pinhole sleeve, and the other side of the shell is suitable for accommodating the needle seat; the end of each pinhole sleeve is provided with at least two layers of annular protrusions in the radial direction. According to the injection needle, the sealing performance in a product can be effectively guaranteed, and the liquid leakage problem of the product is solved.

Description

Technical Field

[0001] Embodiments of this disclosure relate to the field of medical devices, and more particularly to an injection needle. Background Technology

[0002] In recent years, with the increasing demand for cosmetic skin treatments, injectable needles have become a popular and widely used method in the medical aesthetics industry. The rise of this treatment has driven the continuous development and improvement of related equipment, including injectable needle tips.

[0003] Currently, many injection needles on the market have design flaws. For example, when using machine-administered injections, some adjustable needle designs can cause medication to accumulate at the adjustment plate, resulting in leakage. This not only wastes expensive medication but also affects the actual effectiveness of the injection, reducing treatment efficiency and quality. Utility Model Content

[0004] To alleviate or resolve at least one aspect or point of the above-mentioned problems, this disclosure provides an injection needle, comprising: a housing and a needle hub;

[0005] One side of the housing is provided with at least one axially extending pinhole sleeve, and the other side of the housing is adapted to accommodate the pin seat;

[0006] Each of the pinhole sleeves has at least two layers of annular protrusions in the radial direction at its end.

[0007] Optionally, one end of the needle holder is provided with a needle hole seat, and the needle holder has a circumferential structure on the side near the needle hole seat.

[0008] Optionally, the surrounding structure has at least two layers in the axial direction.

[0009] Optionally, the number of pinhole sleeves is multiple, and the number of pinhole bases is the same as the number of pinhole sleeves.

[0010] Optionally, the injection needle further includes an injection connector and an adjustment cap, one side of the injection connector being adapted to be located on the other side of the needle hub, and the adjustment cap being adapted to be fitted onto the injection connector;

[0011] The outer wall of the injection connector is provided with a guide portion in the circumferential direction, and the inner wall of the adjusting cover is provided with a movable portion. The movable portion is adapted to slide along the guide portion so that the adjusting cover rotates around the injection connector.

[0012] Optionally, the guide portion is a spiral groove that slopes from one end of the injection connector toward the other end of the injection connector.

[0013] The moving part is a protruding structure that bulges inward in a radial direction.

[0014] Optionally, the adjusting cover has an annular wall inside, and the protruding structure is located on the inner wall of the annular wall.

[0015] Optionally, an axially extending indicator rib is provided on the other side of the housing, and a display panel is provided on the bottom surface of the adjustment cover;

[0016] The indicator rib is adapted to pass through the bottom of the adjustment cover and be located within the display range of the display panel.

[0017] Optionally, the outer wall of the other side of the housing is provided with a plurality of grooves evenly distributed in the circumference, and the inner wall of the adjusting cover is provided with ribs.

[0018] The rib is adapted to mate with the groove and can move within different grooves.

[0019] Optionally, a snap-fit ​​part is provided on the outer wall of the other side of the housing, and a transverse rib is provided on the inner wall of the adjusting cover;

[0020] The adjusting cover is fitted onto the other side of the outer shell, so that the snap-fit ​​part engages with the transverse rib. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the exploded structure of an injection needle according to an embodiment of the present invention;

[0022] Figure 2 This is a perspective view of the outer casing according to an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A magnified view of a portion of location A in the image;

[0024] Figure 4 This is a perspective view of the outer casing from another perspective according to an embodiment of the present invention;

[0025] Figure 5 This is a perspective view of a needle holder according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the assembly structure of the needle holder and the injection connector according to an embodiment of the present invention;

[0027] Figure 7 This is a perspective view of an adjusting cover according to an embodiment of the present invention;

[0028] Figure 8This is a perspective view of the adjustment cover according to another embodiment of the present invention.

[0029] Figure 9 This is a three-dimensional schematic diagram of an injection needle according to an embodiment of the present invention after assembly;

[0030] Figure 10 for Figure 9 A magnified view of the area at position B in the middle.

[0031] In the picture:

[0032] 10. Outer shell; 101. Pinhole sleeve; 102. Annular protrusion; 103. Indicator rib; 104. Groove; 105. Snap-fit ​​part;

[0033] 20. Syringe;

[0034] 30. Needle seat; 301. Needle hole seat; 302. Circular structure;

[0035] 40. Fixing plate; 401. Spiral groove;

[0036] 50. Adjusting rod;

[0037] 60. Adjustment cover; 601. Raised structure; 602. Horizontal rib; 603. Raised rib; 604. Display panel; 605. Through groove; 606. Annular wall.

[0038] 100. Needle dispensing device; 200. Injection connector. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.

[0040] like Figure 1 and Figure 2 As shown, this disclosure provides an injection needle, comprising:

[0041] Housing 10 and needle holder 30;

[0042] One side of the housing 10 is provided with at least one axially extending pinhole sleeve 101, and the other side of the housing 10 is adapted to accommodate the pin seat 30;

[0043] Each of the pinhole sleeves 101 has at least two layers of annular protrusions 102 in the radial direction at its end.

[0044] The multi-layered annular protrusion structure design effectively ensures the internal sealing of the product, thereby solving the leakage problem.

[0045] The terms “one side,” “the other side,” “one end,” “the other end,” “front side,” “front end,” “rear side,” and “rear end” used in this disclosure are illustrative descriptions. In this disclosure, one side, one end, front side, or front end of the housing or needle holder refers to the direction facing the needle outlet, while the other side, the other end, the rear side, or the rear end of the housing or needle holder refers to the direction away from the needle outlet.

[0046] like Figure 1 and Figure 6 As shown, the injection needle of this disclosure includes a needle delivery device 100, an injection connector 200, and an adjustment cover 60, wherein the needle delivery device 100 includes a housing 10, a needle tube 20, and a needle seat 30.

[0047] Optionally, the injection connector 200 consists of a fixing plate 40 and an adjusting rod 50. Alternatively, the injection connector 200 can be an independent structure, i.e., the fixing plate 40 and the adjusting rod 50 can be formed as a single unit.

[0048] like Figure 2 and Figure 3 As shown, the front end of the outer casing 10 is provided with a plurality of axially extending pinhole sleeves. Optionally, the number of pinhole sleeves is 9, or it can be 4, 16, etc.

[0049] Each pinhole sleeve 101 has at least two layers of annular protrusions 102 at its front end, which are arranged in sequence in the radial direction.

[0050] Optionally, the length of the annular protrusions extending towards the front end of each layer is the same.

[0051] like Figure 5 As shown, a needle hole seat 301 is provided at one end of the needle holder 30, that is, the needle hole seat 301 is located at the front end of the needle holder 30, and the needle tube 20 passes through the needle hole seat 301.

[0052] Optionally, the number of pinhole seats 301 can be multiple, as shown in the figure, and the number of pinhole seats 301 can be 9. The number of pinhole seats 301 is the same as the number of pinhole sleeves 101, so that each pinhole seat 301 corresponds to a pinhole sleeve 101 one by one.

[0053] Optionally, the needle holder 30 has a surrounding structure 302 on the side near the needle hole seat 301. In the installed state, the needle holder 30 is located in a slot (not shown) on the other side of the housing 10, that is, the rear end of the housing 10 has an opening, and the needle holder 30 is located in the opening. Based on the surrounding structure 302 provided in the circumferential direction of the needle holder 30, the sealing between the needle holder 30 and the inner wall of the rear end of the housing 10 can be further increased.

[0054] Optionally, the surrounding structure 302 has at least two layers in the axial direction, where the axial direction referred to in this disclosure is the orientation of the pointer tube.

[0055] like Figure 5 As shown, the surrounding structure 302 is disposed on the front side of the needle holder 30, near the side of the needle holder hole 301.

[0056] The surrounding structure 302 is a structure of annular grooves and annular ribs formed by at least two annular grooves formed on the front side of the needle seat 30, wherein there is an annular rib between the two annular grooves, thereby forming the surrounding structure 302 of this disclosure.

[0057] According to an exemplary embodiment of the present invention, such as Figure 1 , Figure 6 and Figure 8 As shown, the injection needle also includes an injection connector 200 and an adjustment cap 60. One side of the injection connector 200 is located on the other side of the needle hub 30, and the adjustment cap 60 is fitted onto the injection connector 200.

[0058] That is, the other side of the needle holder 30 also has a slot (not shown), such as Figure 6 As shown, the front end of the injection connector 200 is located in the slot at the rear end of the needle holder 30.

[0059] like Figure 1 and Figure 6 As shown, a guide portion is provided on the circumferential direction of the outer wall of the injection connector 200.

[0060] Optionally, the guide portion is a spiral groove 401 that slopes from one end of the injection connector 200 toward the other end of the injection connector. That is, the guide portion is a spiral groove that slopes from the rear end to the front end on the injection connector 200.

[0061] like Figure 8 As shown, a movable part is provided on the inner wall of the adjusting cover 60. Optionally, the movable part is a radially inward protruding protrusion structure 601.

[0062] The protruding structure 601 is adapted to slide along the spiral groove 401 so that the adjusting cover 60 rotates around the injection connector 200 and drives the injection connector 200 to move towards the front end, thereby adjusting the needle extension length of the injection needle.

[0063] Optional, such as Figure 8 As shown, the adjusting cover 60 has an annular wall 606 inside, and the protruding structure 601 is located on the inner wall of the annular wall 606.

[0064] According to an exemplary embodiment of the present invention, such as Figure 4As shown, on the other side of the outer casing 10, i.e. the rear end, there is an axially extending indicator rib 103. The indicator rib 103 extends from the bottom circumference of the outer casing 10 to the rear end, i.e., one end of the indicator rib 103 is connected to the bottom end face of the outer casing 10, and the other end is a free end.

[0065] like Figure 7 , Figure 9 and Figure 10 As shown, a display panel 604 is provided on the bottom surface of the adjustment cover 60, and the display panel 604 has an indicator mark for the needle length.

[0066] The indicator rib 103 is adapted to pass through the bottom of the adjustment cover 60 and be located within the display range of the display panel 604.

[0067] Optionally, the bottom of the adjustment cover is provided with a through groove 605, and the indicator rib 103 is adapted to pass through the through groove 605 so as to be located within the display area.

[0068] According to the present invention, the needle length is adjusted by rotating the adjustment cover 60. The indicator rib 103 is located at different indication positions in the display panel 604 area. The rotation direction of the adjustment cover 60 is adjusted according to the position of the indicator rib 103 in the display panel 604 to control the needle length of the needle dispensing device 100.

[0069] In optional embodiments, such as Figure 4 As shown, a plurality of grooves 104 are provided on the outer wall of the other side of the outer casing 10, which are evenly distributed in the circumference.

[0070] like Figure 8 As shown, the inner wall of the adjusting cover 60 is provided with a raised rib 603, which is adapted to engage with the groove 104.

[0071] The rotating adjustment cover 60 and the raised rib 603 can move within different grooves 104, so that there is a stop when adjusting the needle length.

[0072] In optional embodiments, such as Figure 4 As shown, a snap-fit ​​portion 105 is provided on the outer wall of the other side of the housing 10. Optionally, the snap-fit ​​portion 105 is a stepped surface provided on the rear end of the housing 10.

[0073] like Figure 8 As shown, the inner wall of the adjusting cover 60 is provided with transverse ribs 602.

[0074] In the installed state, the adjusting cover 60 is fitted onto the other side of the outer shell 10 and the transverse rib 602 passes over the snap-fit ​​part 105, so that the snap-fit ​​part 105 and the transverse rib 602 snap into each other.

[0075] The installation and use of each structural component of this utility model are as follows:

[0076] like Figure 1 As shown, the needle holder 30 is installed inside the rear end of the housing 10, and then the needle tubes 20 are placed into different needle holder holes 301 for dispensing and curing. Next, the fixing plate 40 and adjusting rod 50 are placed at the rear end of the needle holder 30, and dispensing and curing are performed again. Finally, the adjusting cover 60 is installed onto the housing 10 and secured using a snap-fit ​​structure. The injection connector 200 is connected to the needle dispensing device 100, and the injection connector 200 is provided with a spiral groove 401.

[0077] Rotating the adjustment cover 60 causes the protruding structure 601 to slide along the spiral groove 401, thereby driving the movement of the injection connector 200 and adjusting the needle length of the needle dispensing device 100.

[0078] The injection needle according to this utility model can accurately control the needle length and prevent product leakage, thereby improving the product's usability.

[0079] It should be noted that the above technical solutions can be combined arbitrarily where logically permissible, and all are within the protection scope of this utility model. In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0080] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0081] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations and combinations of elements may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection needle, comprising a housing and a needle hub; One side of the housing is provided with at least one axially extending pinhole sleeve, and the other side of the housing is adapted to accommodate the pin seat; Its features are: Each of the pinhole sleeves has at least two layers of annular protrusions in the radial direction at its end.

2. The injection needle according to claim 1, characterized in that: One end of the needle holder is provided with a needle hole seat, and the needle holder has a circumferential structure on the side near the needle hole seat.

3. The injection needle according to claim 2, characterized in that: The surrounding structure has at least two layers in the axial direction.

4. The injection needle according to claim 3, characterized in that: The number of pinhole sleeves is multiple, and the number of pinhole bases is the same as the number of pinhole sleeves.

5. The injection needle according to any one of claims 1 to 4, characterized in that: The injection needle further includes an injection connector and an adjustment cap, one side of the injection connector is adapted to be located on the other side of the needle hub, and the adjustment cap is adapted to be sleeved on the injection connector; The outer wall of the injection connector is provided with a guide portion in the circumferential direction, and the inner wall of the adjusting cover is provided with a movable portion. The movable portion is adapted to slide along the guide portion so that the adjusting cover rotates around the injection connector.

6. The injection needle according to claim 5, characterized in that: The guide portion is a spiral groove that slopes from one end of the injection connector toward the other end of the injection connector. The moving part is a protruding structure that bulges inward in a radial direction.

7. The injection needle according to claim 6, characterized in that: The adjusting cover has an annular wall inside, and the protruding structure is located on the inner wall of the annular wall.

8. The injection needle according to claim 6, characterized in that: An axially extending indicator rib is provided on the other side of the outer casing, and a display panel is provided on the bottom surface of the adjustment cover; The indicator rib is adapted to pass through the bottom of the adjustment cover and be located within the display range of the display panel.

9. The injection needle according to claim 6, characterized in that: The outer wall of the other side of the housing is provided with a plurality of grooves evenly distributed in the circumference, and the inner wall of the adjusting cover is provided with ribs. The rib is adapted to mate with the groove and can move within different grooves.

10. The injection needle according to claim 6, characterized in that: A snap-fit ​​part is provided on the outer wall of the other side of the housing, and a transverse rib is provided on the inner wall of the adjusting cover; The adjusting cover is fitted onto the other side of the outer shell, so that the snap-fit ​​part engages with the transverse rib.

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