CN219049876U - Needle for safety insulin injection pen - Google Patents
Needle for safety insulin injection pen Download PDFInfo
- Publication number
- CN219049876U CN219049876U CN202223234391.2U CN202223234391U CN219049876U CN 219049876 U CN219049876 U CN 219049876U CN 202223234391 U CN202223234391 U CN 202223234391U CN 219049876 U CN219049876 U CN 219049876U
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- Prior art keywords
- needle
- protective sleeve
- injection pen
- insulin injection
- needle seat
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Abstract
The utility model discloses a needle head for a safe insulin injection pen, which comprises a needle seat used for connecting an injection assembly, wherein a needle tube is arranged in the needle seat, the needle head also comprises a first protective sleeve detachably connected with the needle seat, a first accommodating cavity is formed between the needle seat and the first protective sleeve, a third accommodating cavity is formed below the needle seat, the needle head also comprises a second protective sleeve, and an ejection part matched with the needle tube is formed on the second protective sleeve. When the insulin injection pen assembly or other injection pen assemblies are put into use, the first protective sleeve and the second protective sleeve are taken down afterwards, injection is achieved, after injection is completed, the needle seat is taken down through the internal threads, the first protective sleeve is sleeved outside the needle seat, the second protective sleeve is pushed upwards from the lower direction of the needle seat, the needle tube in the needle seat is damaged, and meanwhile, the second protective sleeve is arranged on the base, so that accidental injury of contact personnel of products is prevented.
Description
Technical Field
The utility model relates to the field of medical injection devices, in particular to a needle head for a safe insulin injection pen.
Background
With the increasing number of diabetics, daily insulin injections have been very frequent. The insulin pen is an injection tool commonly used in the current insulin treatment and is matched with an insulin needle for use to finish subcutaneous injection.
The insulin needle commonly used at present has an outer needle cap for preventing the head end of the islet needle from being stabbed, and the insulin needle cannot be self-destroyed after being injected into a human body, so that the insulin needle can be reused. The reusable syringe has the hidden trouble of cross infection and is easy to cause the spread of diseases, so that the needle head for the safe insulin injection pen is very important to obtain.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a needle head for a safety insulin injection pen, which comprises a needle seat used for connecting an injection assembly, a first protective sleeve detachably connected with the needle seat, a first accommodating cavity formed between the needle seat and the first protective sleeve, and a second protective sleeve, wherein when the needle head for the safety insulin injection pen is in an unused state, the second protective sleeve is positioned in the first accommodating cavity, a second accommodating cavity is formed between the second protective sleeve and the needle seat, and the first end of the needle tube is positioned in the second accommodating cavity; when the needle head for the safe insulin injection pen is in a used state, the second protective sleeve is positioned in the third accommodating cavity, the needle tube is ejected upwards by the second protective sleeve, and the first end of the needle tube is positioned in the first accommodating cavity. And an ejection part matched with the needle tube is formed on the second protective sleeve.
A first matching structure for matching and connecting the first protective sleeve and the second protective sleeve is arranged between the first protective sleeve and the second protective sleeve. The first matching structure comprises a first bulge and a limiting bulge which are respectively arranged on the inner wall of the first protective sleeve and the outer wall of the second protective sleeve and matched with each other. The limiting protrusion is limited between the bottom of the first protrusion and the needle seat.
A second matching structure for matching and connecting the first protective sleeve and the needle seat is arranged between the first protective sleeve and the needle seat. The second matching structure comprises a second protrusion and a second groove which are respectively arranged on the inner wall of the first protective sleeve and the outer wall of the needle seat.
Third bulges are integrally formed on the outer wall of the needle seat, and a second groove is formed between every two adjacent third bulges. A first groove used for the second protrusion to pass through is formed between two adjacent limit protrusions, or the limit protrusions are integrally formed on the outer wall of the second protective sleeve, and the first groove is formed on the limit ring.
The inner wall of the needle seat is provided with an internal thread for connecting with an injection component. An external anti-rotation groove is formed in the outer wall of the first protective sleeve. And the first protective sleeve is integrally formed with a positioning ring.
A third groove is formed in the top of the second protective sleeve, and a boss matched with the third groove is arranged on the needle seat.
The second protective sleeve comprises a first part and a second part with the diameter larger than that of the first part, the limiting protrusion is integrally formed on the second part, and the outer diameter of the second part is smaller than or equal to the inner diameter of the needle seat.
The integrated into one piece has first strengthening rib on the second part outer wall, and integrated into one piece has the second strengthening rib on the outer wall of needle file, and the thickness of first strengthening rib is not very thick, can help the second protective sheath to block upwards in the needle file bottom, and the thickness of second strengthening rib is not very thick, can help the second protective sheath cover at the top of needle file and be difficult for taking place the relative slip.
The first protective sleeve at the position matched with the needle tube is provided with a downward concave which can prop against the needle tube which is ejected upwards.
The utility model aims to provide a needle head for a safe insulin injection pen, which is used for connecting an insulin injection pen assembly or other injection pen assemblies through internal threads when the safe insulin injection pen is put into use, then taking down a first protective sleeve and a second protective sleeve to realize injection, taking down a needle seat through internal threads after the injection is finished, sleeving the first protective sleeve outside the needle seat, jacking a needle tube upwards from the lower direction of the needle seat, destroying the needle tube in the needle seat, and simultaneously configuring a second protective sleeve on a base to prevent a product from accidentally injuring contact personnel.
Drawings
FIG. 1 is a cross-sectional perspective view of the present utility model;
FIG. 2 is a schematic cross-sectional view of another view of the present utility model;
FIG. 3 is a cross-sectional exploded perspective view of the present utility model
FIG. 4 is an exploded perspective view of the present utility model;
FIG. 5 is a schematic cross-sectional view of the present utility model after use;
reference numerals: 1-a needle stand; 2-needle tube; 3-a first protective sheath; 4-a first accommodation chamber; 5-a second protective sleeve; 501-a first part; 502-a second part; 6-a second accommodation chamber; 7-an ejection part; 8-a first mating structure; 801-a first bump; 802-limit protrusions; 803-first groove; 9-a second mating structure; 901-a second bump; 902-a second groove; 903—a third bump; 10-a third groove; 11-boss; 12-a first reinforcing rib; 13-a second reinforcing rib; 14-recessing downwards; 15-an external anti-spin groove; 16-internal threads; 17-positioning rings; 18-a third accommodation chamber.
Detailed Description
The utility model will be described in detail below with respect to certain specific embodiments thereof in order to better understand the utility model and thereby to more clearly define the scope of the utility model as claimed. It should be noted that the following description is only some embodiments of the inventive concept and is only a part of examples of the present utility model, wherein the specific direct description of the related structures is only for the convenience of understanding the present utility model, and the specific features do not naturally and directly limit the implementation scope of the present utility model.
Referring to the drawings, the utility model adopts the following technical scheme that the needle for the safety insulin injection pen comprises a needle seat 1 for connecting an injection assembly, wherein a needle tube 2 is arranged in the needle seat 1, the needle also comprises a first protective sleeve 3 detachably connected with the needle seat 1, a first accommodating cavity 4 is formed between the needle seat 1 and the first protective sleeve 3, a third accommodating cavity 18 is formed below the needle seat 1, the needle for the safety insulin injection pen also comprises a second protective sleeve 5, when the needle for the safety insulin injection pen is in an unused state, the second protective sleeve 5 is positioned in the first accommodating cavity 4, a second accommodating cavity 6 is formed between the second protective sleeve 5 and the needle seat 1, and the first end of the needle tube 1 is positioned in the second accommodating cavity 6; when the needle head for the safety insulin injection pen is in a used state, the second protective sleeve 5 is positioned in the third accommodating cavity 18, the needle tube 2 is ejected upwards by the second protective sleeve 5, and the first end of the needle tube 2 is positioned in the first accommodating cavity 4. The second protective sleeve 5 is provided with an ejection part 7 matched with the needle tube. The second end of the needle tube 1 is positioned below the needle seat and is used for connecting an insulin injection pen assembly.
A first mating structure 8 for mating connection of the first protective sleeve 3 and the second protective sleeve 5 is arranged between them. The first matching structure 8 comprises a first protrusion 801 and a limiting protrusion 802 which are respectively arranged on the inner wall of the first protective sleeve 3 and the outer wall of the second protective sleeve 5 and matched with each other. The limit projection 802 is restrained between the bottom of the first projection 801 and the needle holder 1. In this embodiment, the first protrusion 801 is integrally formed on the inner wall of the first protection sleeve, and is in a strip shape, and the limit protrusion 802 is integrally formed at the bottom of the second protection sleeve 5.
A second matching structure 9 for matching connection is arranged between the first protective sleeve 3 and the needle seat 1. The second mating structure 9 includes a second protrusion 901 and a second recess 902 provided on the inner wall of the first protective cover 3 and the outer wall of the needle holder 1, respectively. The second protrusion 901 is integrally formed on the inner wall of the first protective sleeve 3, and the length of the second protrusion 901 is longer than that of the first protrusion 801, and the second protrusion 901 is inserted into the second groove 902 to realize limit.
The inner wall of the needle seat 1 is provided with an internal thread 16 for connecting an injection assembly. An external anti-rotation groove 15 is arranged on the outer wall of the first protective sleeve 3 and is used for increasing hand friction. The first protective sleeve 3 is integrally formed with a positioning ring 17.
The third groove 10 is formed in the top of the second protective sleeve, the boss 11 matched with the third groove 10 is integrally formed on the needle seat, and as shown in fig. 5, when the needle tube 1 is ejected upwards by the second protective sleeve 5, the third groove 10 is matched with the boss 11.
The second protective sleeve comprises a first part 501 and a second part 502, wherein the first part is integrally formed, the second part 502 is larger than the first part in diameter, the limiting protrusion 802 is integrally formed on the second part 502, and the outer diameter of the second part 502 is smaller than or equal to the inner diameter of the needle seat 1.
The integrated into one piece has first strengthening rib 12 on the second part 802 outer wall, and integrated into one piece has second strengthening rib 13 on the outer wall of needle file 1, and first strengthening rib 12's thickness is not very thick, can help the second protective sheath to block upwards in the needle file bottom, and second strengthening rib 13's thickness is not very thick, can help the second protective sheath cover at the top of needle file and be difficult for taking place the relative slip.
A downward recess 14 is arranged on the first protective sleeve at the position matched with the needle tube 2, and the downward recess 14 can prop against the needle tube 2 which is ejected upwards.
The utility model aims to provide a needle head for a safe insulin injection pen, which is used for connecting an insulin injection pen assembly or other injection pen assemblies through internal threads when the safe insulin injection pen is put into use, then taking down a first protective sleeve 3 and a second protective sleeve 5 to realize injection, taking down a needle seat through internal threads 16 after the injection is finished, sleeving the first protective sleeve outside the needle seat, pushing up the second end of a needle tube 2 from the lower direction of the needle seat, destroying the needle tube 2 in the needle seat 1, and simultaneously assembling the second protective sleeve 5 on a base to prevent a product from accidentally injuring contact personnel.
The above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, as many variations, modifications, additions and substitutions are possible, without departing from the scope and spirit of the utility model as disclosed in the accompanying claims.
Claims (10)
1. The utility model provides a safe type insulin is syringe needle for pen, includes needle file (1) that are used for connecting injection subassembly, be equipped with needle tubing (2) in needle file (1), still include first protective sheath (3) of being connected with needle file (1) can dismantle, form first chamber (4) that holds between needle file (1) and first protective sheath (3), needle file (1) below forms third chamber (18) that holds, its characterized in that: the safety insulin injection pen needle is characterized by further comprising a second protective sleeve (5), wherein when the safety insulin injection pen needle is in an unused state, the second protective sleeve (5) is positioned in the first accommodating cavity (4), a second accommodating cavity (6) is formed between the second protective sleeve (5) and the needle seat (1), and the first end of the needle tube (2) is positioned in the second accommodating cavity (6); when the needle head for the safe insulin injection pen is in a used state, the second protective sleeve (5) is positioned in the third containing cavity (18), the needle tube (2) is ejected upwards by the second protective sleeve (5), and the first end of the needle tube (2) is positioned in the first containing cavity (4).
2. The needle for a safety insulin injection pen according to claim 1, wherein: a first matching structure (8) for matching connection of the first protective sleeve (3) and the second protective sleeve (5) is arranged between the first protective sleeve and the second protective sleeve.
3. The needle for a safety insulin injection pen according to claim 2, wherein: the first matching structure (8) comprises a first protrusion (801) and a limiting protrusion (802) which are respectively arranged on the inner wall of the first protective sleeve (3) and the outer wall of the second protective sleeve (5) and matched with each other.
4. A needle for a safety insulin injection pen according to claim 3, wherein: the limiting protrusion (802) is limited between the bottom of the first protrusion (801) and the needle seat (1).
5. The needle for a safety insulin injection pen according to claim 1, wherein: a second matching structure (9) for matching and connecting the first protective sleeve (3) and the needle seat (1) is arranged between the first protective sleeve and the needle seat.
6. The needle for a safety insulin injection pen according to claim 5, wherein: the second matching structure (9) comprises a second protrusion (901) and a second groove (902) which are respectively arranged on the inner wall of the first protective sleeve (3) and the outer wall of the needle seat (1).
7. The needle for a safety insulin injection pen according to claim 1, wherein: an ejection part (7) matched with the needle tube (2) is formed on the second protective sleeve (5).
8. The needle for a safety insulin injection pen according to claim 1, wherein: a third groove (10) is arranged at the top of the second protective sleeve (5), and a boss matched with the third groove (10) is arranged on the needle seat (1).
9. The needle for a safety insulin injection pen according to claim 1, wherein: the second protective sleeve (5) comprises a first part (501) and a second part (502) with the diameter larger than that of the first part (501), the limiting protrusion (802) is integrally formed on the second part (502), and the outer diameter of the second part (502) is smaller than or equal to the inner diameter of the needle seat (1).
10. The needle for a safety insulin injection pen according to claim 1, wherein: a first protective sleeve (3) positioned at the matching position of the needle tube (2) is provided with a downward recess (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223234391.2U CN219049876U (en) | 2022-12-01 | 2022-12-01 | Needle for safety insulin injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223234391.2U CN219049876U (en) | 2022-12-01 | 2022-12-01 | Needle for safety insulin injection pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219049876U true CN219049876U (en) | 2023-05-23 |
Family
ID=86369731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223234391.2U Active CN219049876U (en) | 2022-12-01 | 2022-12-01 | Needle for safety insulin injection pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219049876U (en) |
-
2022
- 2022-12-01 CN CN202223234391.2U patent/CN219049876U/en active Active
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