CN220276063U - Double-layer injector - Google Patents
Double-layer injector Download PDFInfo
- Publication number
- CN220276063U CN220276063U CN202320175993.0U CN202320175993U CN220276063U CN 220276063 U CN220276063 U CN 220276063U CN 202320175993 U CN202320175993 U CN 202320175993U CN 220276063 U CN220276063 U CN 220276063U
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- China
- Prior art keywords
- layer
- needle
- outer layer
- injection cylinder
- wall
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- 238000002347 injection Methods 0.000 claims abstract description 93
- 239000007924 injection Substances 0.000 claims abstract description 93
- 239000010410 layer Substances 0.000 claims description 136
- 239000002355 dual-layer Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 20
- 229940079593 drug Drugs 0.000 abstract description 8
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Abstract
The utility model discloses a double-layer injector, which comprises an inner-layer injection cylinder, wherein an inner-layer piston is arranged in the inner-layer injection cylinder and is connected with an inner-layer piston rod, and an inner-layer needle connector is arranged at the outlet of the inner-layer injection cylinder; an outer layer injection sleeve is sleeved outside the inner layer injection cylinder, an outer layer injection cylinder is formed between the outer wall of the inner layer injection cylinder and the inner wall of the outer layer injection sleeve, an outer layer piston matched with the outer layer injection cylinder is arranged in the outer layer injection cylinder, the outer layer piston is connected with an outer layer piston rod, an outer layer needle connector is arranged at the outlet end part of the outer layer injection sleeve, the outer layer needle connector is sleeved outside the inner layer needle connector, and an outlet channel of the outer layer injection cylinder is formed between the inner wall of the outer layer needle connector and the outer wall of the inner layer needle connector; an inner layer needle is arranged on the inner layer needle connector, an outer layer needle is arranged on the outer layer needle connector, and an outer layer needle is sleeved outside the inner layer needle. The double-layer injector can store two medicines respectively, so as to achieve the aim of synergistic administration.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a high-precision adjustable double-layer injector.
Background
The in-situ gel has the effect of long-acting slow release, is suitable for patients needing long-term medicine taking, and the double-medicine synergistic/sequential medicine taking strategy can improve the treatment effect of the medicine, but the gel preparation is usually in a single medicine taking mode, mainly because the gel is used as a medicine storage, the interaction between medicines can possibly occur in the storage process, if the two medicines are separately injected, the pain of the patients can be increased, and meanwhile, the problem of inaccurate medicine taking dosage is caused.
Disclosure of Invention
The utility model aims to provide a double-layer injector with adjustable high precision.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the double-layer injector comprises an inner-layer injection cylinder, wherein an inner-layer piston is arranged in the inner-layer injection cylinder and is connected with an inner-layer piston rod, and an inner-layer needle connector is arranged at the outlet of the inner-layer injection cylinder;
an outer layer injection sleeve is sleeved outside the inner layer injection sleeve, an outer layer injection sleeve is formed between the outer wall of the inner layer injection sleeve and the inner wall of the outer layer injection sleeve, an outer layer piston matched with the outer layer injection sleeve is arranged in the outer layer injection sleeve, the outer layer piston is connected with an outer layer piston rod, an outer layer needle connector is arranged at the outlet end part of the outer layer injection sleeve, the outer layer needle connector is sleeved outside the inner layer needle connector, and an outlet channel of the outer layer injection sleeve is formed between the inner wall of the outer layer needle connector and the outer wall of the inner layer needle connector;
the inner-layer needle connector is provided with an inner-layer needle, the outer-layer needle connector is provided with an outer-layer needle, the outer-layer needle is sleeved outside the inner-layer needle, and a channel of the outer-layer needle is formed between the inner wall of the outer-layer needle and the outer wall of the inner-layer needle.
Further, the inner needle connector is detachably connected with the inner injection tube.
Further, the outer needle connector is detachably connected with the outer injection sleeve.
In one embodiment of the utility model, the detachable connection is a threaded connection. The threaded connection can ensure that the needle head and the syringe barrel are not easy to separate, thereby avoiding the leakage of liquid medicine and the pollution of the syringe and reducing the waste of medicines and consumables.
Further, the outer needle connector and the inner needle connector are connected to each other to form a single body.
Further, the inner injection tube and the outer injection sleeve are formed into a whole by partially interconnecting the outer wall of the inner injection tube and the inner wall of the outer injection sleeve.
Further, a jacking bolt is arranged between the outer layer injection sleeve and the inner layer injection cylinder, and penetrates through the outer layer injection sleeve to jack the inner layer injection cylinder, so that the outer layer injection sleeve and the inner layer injection cylinder are fixed; and a through groove is formed in the position of the outer layer piston rod, which is positioned on the jacking bolt, and the outer layer piston rod ensures that the jacking bolt is positioned in the through groove in the moving process.
Further, the two sides of the outer injection sleeve are provided with the pressing hands in a protruding mode towards the outer end.
The double-layer injector can store two medicines respectively to achieve the aim of cooperative administration, and provides technical support for the research of in-situ gel on the medicine cooperative/sequential administration mode.
Drawings
FIG. 1 is a cross-sectional view of a non-detachable dual layer syringe;
FIG. 2 is a perspective view of a non-removable dual layer syringe;
FIG. 3 is a top view of a non-removable dual layer syringe;
FIG. 4 is a cross-sectional view of a removable dual layer syringe;
FIG. 5 is a perspective view of a removable dual layer syringe;
FIG. 6 is a top view of a removable dual layer syringe;
wherein: 1 is an inner layer piston rod, 2 is an inner layer injection cylinder, 3 is an inner layer needle head connector, 4 is an inner layer needle head, 5 is an outer layer piston rod, 6 is an outer layer injection sleeve, 7 is an outer layer needle head connector, 8 is an outer layer needle head, 9 is an inner layer piston, 10 is an outer layer piston, 11 is a press hand, 12 is an outer layer injection cylinder, and 13 is a tightening bolt.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
The double-layer injector provided by the utility model is divided into two layers, the inner layer and the outer layer can be filled with slow-release materials containing medicines, the materials can be the same or different, and the release speed of the medicines can be controlled by adjusting the prescription proportion. The double-layer injector avoids the risk of interaction and mixing of two medicaments, and provides technical support for synergistic administration and sequential administration.
As shown in fig. 1 and 4, the utility model provides a double-layer injector, which comprises an inner-layer injection cylinder 2, wherein an inner-layer piston 9 is arranged in the inner-layer injection cylinder 2, the inner-layer piston 9 is connected with an inner-layer piston rod 1, and an inner-layer needle connector 3 is arranged at the outlet of the inner-layer injection cylinder 2. The outside cover of inlayer injection tube 2 is equipped with outer injection sleeve 6, the outer wall of inlayer injection tube 2 with form outer injection tube 12 between the inner wall of outer injection sleeve 6, be provided with the outer piston 10 of complex with it in the outer injection tube 12, outer piston 10 connects outer piston rod 5, the exit end of outer injection sleeve 6 is provided with outer syringe needle connector 7, outer syringe needle connector 7 cover is established the outside of inlayer syringe needle connector 3, outer syringe needle connector 7's inner wall with form the exit channel of outer injection tube 12 between the outer wall of inlayer syringe needle connector 3. The inner-layer needle connector 3 is provided with an inner-layer needle 4, the outer-layer needle connector 7 is provided with an outer-layer needle 8, the outer-layer needle 8 is sleeved outside the inner-layer needle 4, and a channel of the outer-layer needle 8 is formed between the inner wall of the outer-layer needle 8 and the outer wall of the inner-layer needle 4.
The inner needle connector 3 is detachably linked with the inner injection tube 2, and the outer needle connector 7 is detachably linked with the outer injection sleeve 6. The detachable link can be in threaded connection, the needle head and the syringe barrel can not be easily separated by the threaded connection, the leakage of liquid medicine and the pollution of the syringe are avoided, and the waste of medicines and consumables is reduced.
For ease of use, the outer needle connector 7 and the inner needle connector 3 may be connected to each other to form a single piece.
The outer wall of the inner injection tube 2 and the inner wall of the outer injection sleeve 6 can be partially connected to form a whole between the inner injection tube 2 and the outer injection sleeve 6, namely, the non-detachable double-layer injector, as shown in fig. 1. The undetachable double-layer injector is a disposable device, and has simple structure, practicality and convenience.
In addition, a tightening bolt 13 may be disposed between the outer injection sleeve 6 and the inner injection sleeve 2, and the tightening bolt passes through the outer injection sleeve 6 to tighten the inner injection sleeve 2, so as to fix the outer injection sleeve 6 and the inner injection sleeve 2, i.e. a detachable double-layer injector, as shown in fig. 4. The manner of installing the jack bolts 13 may be varied, and two types of the present utility model are listed: a through groove is formed in the outer layer piston rod 5 and is used for arranging the jacking bolts 13, and the outer layer piston rod 5 can ensure that the jacking bolts 13 are in the through groove in the moving process; the other is to divide the outer layer piston rod 5 into 4 sections uniformly, and the gap between each section is used for setting the jacking bolts 13.
For convenient operation in use, the two sides of the outer injection sleeve 6 are provided with push hands 11 protruding outwards.
For accurately adjusting the dosage of the medicine, the inner injection tube 2 and the outer injection tube 6 are made of transparent materials so as to be convenient for observation. Meanwhile, the outer wall of the outer injection tube 6 is provided with syringe tube graduation marks, and the piston push rod of the inner layer of the syringe is also provided with graduation marks.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. A dual layer syringe, characterized by: the injection device comprises an inner layer injection cylinder (2), wherein an inner layer piston (9) is arranged in the inner layer injection cylinder (2), the inner layer piston (9) is connected with an inner layer piston rod (1), and an inner layer needle connector (3) is arranged at the outlet of the inner layer injection cylinder (2);
an outer layer injection sleeve (6) is sleeved outside the inner layer injection cylinder (2), an outer layer injection cylinder (12) is formed between the outer wall of the inner layer injection cylinder (2) and the inner wall of the outer layer injection sleeve (6), an outer layer piston (10) matched with the outer layer injection cylinder is arranged in the outer layer injection cylinder (12), the outer layer piston (10) is connected with an outer layer piston rod (5), an outer layer needle connector (7) is arranged at the outlet end part of the outer layer injection sleeve (6), the outer layer needle connector (7) is sleeved outside the inner layer needle connector (3), and an outlet channel of the outer layer injection cylinder (12) is formed between the inner wall of the outer layer needle connector (7) and the outer wall of the inner layer needle connector (3);
the inner-layer needle connector (3) is provided with an inner-layer needle (4), the outer-layer needle connector (7) is provided with an outer-layer needle (8), the outer-layer needle (8) is sleeved outside the inner-layer needle (4), and a channel of the outer-layer needle (8) is formed between the inner wall of the outer-layer needle (8) and the outer wall of the inner-layer needle (4).
2. The dual layer injector of claim 1, wherein: the inner-layer needle head connector (3) is detachably connected with the inner-layer injection tube (2).
3. The dual layer injector of claim 1, wherein: the outer layer needle head connector (7) is detachably connected with the outer layer injection sleeve (6).
4. The dual layer injector of claim 1, wherein: the outer layer needle connector (7) and the inner layer needle connector (3) are connected with each other to form a whole.
5. The dual layer injector of claim 1, wherein: the outer wall of the inner layer injection cylinder (2) and the inner wall of the outer layer injection sleeve (6) are connected through parts so as to form a whole body of the inner layer injection cylinder (2) and the outer layer injection sleeve (6).
6. The dual layer injector of claim 1, wherein: a jacking bolt (13) is arranged between the outer layer injection sleeve (6) and the inner layer injection cylinder (2), and penetrates through the outer layer injection sleeve (6) to jack the inner layer injection cylinder (2), so that the outer layer injection sleeve (6) is fixed with the inner layer injection cylinder (2); the outer layer piston rod (5) is provided with a through groove at the position of the jacking bolt (13), and the jacking bolt (13) is ensured to be in the through groove in the moving process of the outer layer piston rod (5).
7. The dual layer injector of claim 1, wherein: the two sides of the outer injection sleeve (6) are provided with pressing hands (11) in a protruding mode towards the outer ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320175993.0U CN220276063U (en) | 2023-02-10 | 2023-02-10 | Double-layer injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320175993.0U CN220276063U (en) | 2023-02-10 | 2023-02-10 | Double-layer injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220276063U true CN220276063U (en) | 2024-01-02 |
Family
ID=89328872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320175993.0U Active CN220276063U (en) | 2023-02-10 | 2023-02-10 | Double-layer injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220276063U (en) |
-
2023
- 2023-02-10 CN CN202320175993.0U patent/CN220276063U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |