CN220002611U - Double rubber plug injector - Google Patents
Double rubber plug injector Download PDFInfo
- Publication number
- CN220002611U CN220002611U CN202321028451.7U CN202321028451U CN220002611U CN 220002611 U CN220002611 U CN 220002611U CN 202321028451 U CN202321028451 U CN 202321028451U CN 220002611 U CN220002611 U CN 220002611U
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- China
- Prior art keywords
- plug
- rubber plug
- rubber
- cylinder
- needle cylinder
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- 239000003814 drug Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 229940079593 drug Drugs 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a double-rubber-plug injector, which comprises a needle cylinder and a core rod, wherein one end of the needle cylinder is provided with a needle seat, the other end of the needle cylinder is provided with an opening, one end of the core rod penetrates through the opening and is arranged in the needle cylinder, one end of the core rod, which is arranged in the needle cylinder, is provided with a first rubber plug, the outer diameter of the first rubber plug is larger than the inner diameter of the needle cylinder, a second rubber plug is arranged in the needle cylinder and is positioned between the needle seat and the first rubber plug, the outer diameter of the second rubber plug is larger than the inner diameter of the needle cylinder, the second rubber plug is in interference fit with the inner wall of the needle cylinder, the first rubber plug and the second rubber plug form a first medicine filling cavity, a second medicine filling cavity is formed between the second rubber plug and the needle seat, and a mixing section for mixing liquid medicine is arranged in the middle of the needle cylinder. The double-rubber plug injector has the advantages of simple structure, easy production and manufacture, and can effectively achieve the aim of separating two medicines before use and easy mixing during use.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a double-rubber-plug syringe.
Background
An injector is a common medical device, and is generally composed of a syringe and a matched plunger rod, and is used for injecting a small amount of liquid or gas into areas inaccessible to other methods or extracting from the areas, wherein the liquid or gas is sucked from a small hole at the front end of the syringe when the plunger rod is extracted, and the liquid or gas is extruded when the plunger rod is pushed in. The process of extracting or injecting liquid and gas by using a syringe is injection.
When the traditional injector is used for injecting the medicaments which are required to be mixed and then used, one medicament needs to be inhaled first and then the other medicament needs to be inhaled, the operation process is complicated, and the medicament sucking container needs to be changed, so that the pollution risk is increased. For this reason, there are some syringes capable of injecting two medicaments on the market, such as the chinese patent of utility model, publication No. CN106466501 a: the double-cavity injector has complicated structure, and the operation process needs to exert great force to mix two medicaments, so that the injection process is difficult to operate.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the double-rubber-plug syringe which is simple in structure, easy to produce and manufacture, capable of effectively achieving the purpose of separating two medicines before use and easy to mix during use, and convenient to operate.
In order to achieve the above purpose, the double-rubber-plug injector of the utility model comprises a needle cylinder and a core rod, wherein one end of the needle cylinder is provided with a needle seat, the other end of the needle cylinder is provided with an opening, one end of the core rod penetrates through the opening and is arranged in the needle cylinder, one end of the core rod arranged in the needle cylinder is provided with a first rubber plug, the outer diameter of the first rubber plug is larger than the inner diameter of the needle cylinder, the first rubber plug is in interference fit with the inner wall of the needle cylinder, a second rubber plug is arranged in the needle cylinder and is positioned between the needle seat and the first rubber plug, the outer diameter of the second rubber plug is larger than the inner diameter of the needle cylinder, the second rubber plug is in interference fit with the inner wall of the needle cylinder, the first rubber plug and the second rubber plug form a first medicine filling cavity, a second medicine filling cavity is formed between the second rubber plug and the needle seat, and a mixing section for mixing medicine liquid is arranged in the middle of the needle cylinder.
Further, the mixing section comprises a mixing groove arranged on the inner wall of the needle cylinder, the inner diameter of the mixing groove is larger than the outer diameter of the second rubber plug, and the inner diameter of the mixing groove is smaller than the outer diameter of the first rubber plug.
Further, both ends of the mixing tank are respectively provided with a slope for guiding the second rubber plug.
Further, one end of the second rubber plug, which is close to the first rubber plug, is provided with a first raised ring, one end of the second rubber plug, which is close to the needle seat, is provided with a second raised ring, one side, which is far away from the first rubber plug, of the first ring is provided with an inclined chamfer, and the interface of the second ring on the circumference is semicircular.
Further, the surface of the second rubber plug, which is close to the first rubber plug, is concave, and the surface of the second rubber plug, which is far away from the first rubber plug, is convex.
Further, the top of the first rubber plug is identical to the bottom of the second rubber plug in shape.
The double-rubber plug injector has the advantages of simple structure, easy production and manufacture, effective separation of two medicines before use, easy mixing during use and convenient operation.
Drawings
The utility model is further described and illustrated below with reference to the accompanying drawings.
Fig. 1 is a schematic view showing a structure of a dual-stopper syringe according to a preferred embodiment of the present utility model in an unused state.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic view of the structure of the second rubber stopper when it reaches the mixing tank.
Fig. 4 is an enlarged view at B in fig. 3.
Fig. 5 is a schematic view of the structure when the first rubber stopper contacts the second rubber stopper.
Fig. 6 is a schematic view of the structure after injection is completed.
Reference numerals: 1. a needle cylinder; 11. a needle stand; 12. a mixing tank; 2. a core bar; 3. a first rubber plug; 4. a second rubber plug; 41. a first ring; 42. a second ring.
Detailed Description
The technical solution of the present utility model will be more clearly and completely explained by the description of the preferred embodiments of the present utility model with reference to the accompanying drawings.
As shown in fig. 1, the dual-rubber plug injector of the preferred embodiment of the present utility model comprises a syringe 1 and a core rod 2, wherein one end of the syringe 1 is provided with a needle seat 11, the other end is provided with an opening, and one end of the core rod 2 passes through the opening and is arranged in the syringe 1.
As shown in fig. 1 and 2, one end of the core rod 2 arranged in the needle cylinder 1 is provided with a first rubber plug 3, the outer diameter of the first rubber plug 3 is larger than the inner diameter of the needle cylinder 1, the first rubber plug 3 is in interference fit with the inner wall of the needle cylinder 1, the needle cylinder 1 is internally provided with a second rubber plug 4, the second rubber plug 4 is positioned between the needle seat 11 and the first rubber plug 3, the outer diameter of the second rubber plug 4 is larger than the inner diameter of the needle cylinder 1, and the second rubber plug 4 is in interference fit with the inner wall of the needle cylinder 1. One surface of the second rubber plug 4 close to the first rubber plug 3 is concave, and one surface of the second rubber plug 4 far away from the first rubber plug 3 is convex. The top of the first rubber plug 3 is the same as the bottom of the second rubber plug 4 in shape.
As shown in fig. 1, the first rubber plug 3 and the second rubber plug 4 form a first medicine filling cavity, a second medicine filling cavity is formed between the second rubber plug 4 and the needle seat 11, and different medicine liquids or medicine powders can be filled in the first medicine filling cavity and the second medicine filling cavity.
As shown in fig. 1 and 4, a mixing section for mixing the liquid medicine is provided in the middle of the cylinder 1. The mixing section comprises a mixing groove 12 arranged on the inner wall of the needle cylinder 1, the inner diameter of the mixing groove 12 is larger than the outer diameter of the second rubber plug 4, the inner diameter of the mixing groove 12 is smaller than the outer diameter of the first rubber plug 3, and slopes for guiding the second rubber plug 4 are respectively arranged at two ends of the mixing groove 12.
As shown in fig. 2, one end of the second rubber plug 4 close to the first rubber plug 3 is provided with a first raised ring 41, one end of the second rubber plug 4 close to the needle seat 11 is provided with a second raised ring 42, one side of the first ring 41 away from the first rubber plug 3 is provided with an inclined chamfer, and the interface of the second ring 42 on the circumference is semicircular.
The specific implementation process comprises the following steps: as shown in fig. 1, in the initial state, the core bar 2 is located at an end of the cylinder 1 remote from the needle mount 11. After the injection action starts, the core rod 2 is pushed to move towards the needle seat 11, and the first rubber plug 3, the second rubber plug 4 and the needle cylinder 1 are in interference fit as the first medicine charging cavity is filled with medicine, so that the second rubber plug 4 synchronously moves towards the needle seat 11 until reaching the mixing groove 12. After the second rubber plug 4 reaches the mixing groove 12 as shown in fig. 3 and 4, since the inner diameter of the mixing groove 12 is larger than the outer diameter of the second rubber plug 4, a medicine mixing channel is formed between the mixing groove 12 and the second rubber plug 4, and the second rubber plug 4 is kept at the mixing groove 12 after being pushed continuously, and the medicine in the first medicine filling cavity is extruded into the second medicine filling cavity to be mixed with the medicine therein, as shown in fig. 5, until the first rubber plug 3 is contacted with the second rubber plug 4, the space of the first medicine filling cavity disappears, and the medicine also completely enters the second medicine filling cavity, and at the moment, the core rod 2 is continuously pushed, the first rubber plug 3 and the second rubber plug 4 are simultaneously moved, and the medicine in the extrusion needle seat 11 is the mixed medicine until the pushing is completed, as shown in fig. 6. During pushing, the first ring 41 cooperates with the second ring 42 to promote the tightness of the second rubber stopper 4 against the inner wall of the cylinder 1 before reaching the mixing tank 12. And the first ring 41 facilitates the stay action of the second rubber stopper 4 after reaching the mixing tank 12. The second ring 42 facilitates the movement of the second rubber stopper 4 out of the mixing tank 12 after the first rubber stopper 3 abuts against the second rubber stopper 4.
The double-rubber plug injector has the advantages of simple structure, easy production and manufacture, effective separation of two medicines before use, easy mixing during use and convenient operation.
The above detailed description is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Various modifications, substitutions and improvements of the technical scheme of the present utility model will be apparent to those skilled in the art from the description and drawings provided herein without departing from the spirit and scope of the utility model. The scope of the utility model is defined by the claims.
Claims (6)
1. The utility model provides a two plug syringes, includes cylinder (1) and core bar (2), cylinder (1) one end is equipped with needle file (11), and the other end is equipped with the opening, the one end of core bar (2) passes in the opening sets up cylinder (1), its characterized in that, the one end that core bar (2) set up in cylinder (1) is equipped with first plug (3), the external diameter of first plug (3) is greater than the internal diameter of cylinder (1), first plug (3) and cylinder (1) inner wall interference fit, be equipped with second plug (4) in cylinder (1), second plug (4) are located between needle file (11) and first plug (3), the external diameter of second plug (4) is greater than the internal diameter of cylinder (1), second plug (4) and cylinder (1) inner wall interference fit, first plug (3) and second plug (4) form first dress chamber, form the second dress chamber between second plug (4) and needle file (11), the middle part is equipped with the mixed medicine liquid section that is used for mixing cylinder (1).
2. The double-rubber-plug injector according to claim 1, characterized in that the mixing section comprises a mixing groove (12) arranged on the inner wall of the syringe (1), the inner diameter of the mixing groove (12) is larger than the outer diameter of the second rubber plug (4), and the inner diameter of the mixing groove (12) is smaller than the outer diameter of the first rubber plug (3).
3. Double-rubber-plug injector according to claim 2, characterized in that the two ends of the mixing tank (12) are respectively provided with a slope for guiding the second rubber plug (4).
4. The double-rubber-plug injector according to claim 2, characterized in that one end of the second rubber plug (4) close to the first rubber plug (3) is provided with a raised first ring (41), one end of the second rubber plug (4) close to the needle seat (11) is provided with a raised second ring (42), one side of the first ring (41) far away from the first rubber plug (3) is provided with an inclined chamfer, and the interface of the second ring (42) on the circumference is semicircular.
5. The double-rubber-plug injector according to claim 1, characterized in that the side of the second rubber plug (4) close to the first rubber plug (3) is concave, and the side of the second rubber plug (4) far away from the first rubber plug (3) is convex.
6. The double-rubber-plug syringe according to claim 5, characterized in that the top of the first rubber plug (3) is identical in shape to the bottom of the second rubber plug (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321028451.7U CN220002611U (en) | 2023-05-04 | 2023-05-04 | Double rubber plug injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321028451.7U CN220002611U (en) | 2023-05-04 | 2023-05-04 | Double rubber plug injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220002611U true CN220002611U (en) | 2023-11-14 |
Family
ID=88692528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321028451.7U Active CN220002611U (en) | 2023-05-04 | 2023-05-04 | Double rubber plug injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220002611U (en) |
-
2023
- 2023-05-04 CN CN202321028451.7U patent/CN220002611U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231211 Address after: 210000 No.8, 278 Tai'an Road, Chunxi Town, Gaochun District, Nanjing City, Jiangsu Province Patentee after: Tefeng Pharmaceutical Co.,Ltd. Address before: 210000 No. 278, Tai'an Road, Chunxi street, Gaochun District, Nanjing, Jiangsu Patentee before: NANJING TEFENG PHARMACEUTICAL Co.,Ltd. |