CN219001736U - Anti-countercurrent needleless closed infusion connector - Google Patents
Anti-countercurrent needleless closed infusion connector Download PDFInfo
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- CN219001736U CN219001736U CN202223116691.0U CN202223116691U CN219001736U CN 219001736 U CN219001736 U CN 219001736U CN 202223116691 U CN202223116691 U CN 202223116691U CN 219001736 U CN219001736 U CN 219001736U
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- infusion
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- connecting screw
- infusion connector
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Abstract
The utility model discloses an anti-countercurrent needleless airtight infusion connector which comprises a shell, wherein a connecting screw groove is formed in the middle of the top end of the shell, a connecting screw head is arranged at the bottom end of the shell, three elastic diaphragms with arc-surface fan-shaped structures are distributed at the inner bottom end of the connecting screw head, an infusion catheter is arranged in the middle of the shell, a pointed cone-shaped structure is adopted at the bottom end of the infusion catheter, and a side hole is formed in the pointed cone-shaped structure in the infusion catheter. The beneficial effects are that: according to the utility model, the elastic membrane is additionally arranged at the connecting screw head connected with the external needleless injector, so that the phenomenon that residual liquid medicine flows out of the matched part of the needleless injector on the needleless closed infusion connector after the external needleless injector is pulled out can be effectively avoided under the action of the elastic membrane when the needleless closed infusion connector is used, and the cleaning of the surrounding environment of the needleless closed infusion connector is effectively improved when the needleless closed infusion connector is used.
Description
Technical Field
The utility model relates to the technical field of needleless closed infusion connectors, in particular to an anti-backflow needleless closed infusion connector.
Background
The needleless closed infusion connector is usually matched with a medical three-way valve for use, is mainly used for connecting an injector, an infusion set and a blood transfusion set, and is particularly applied to patients with intravenous infusion, such as children, critical patients, chemotherapy patients, patients who continue rescuing and patients with water and electrolyte imbalance; the needleless closed infusion connector effectively avoids the defect that the needle of the injector is easy to be inserted into medical staff in a needleless injection mode, and is widely applied.
The existing needleless closed infusion connector mainly comprises a shell and an infusion catheter with a tip structure, wherein the infusion catheter is arranged in the shell, and the needleless closed infusion connector with the structure can be matched with an external needleless injector to inject therapeutic liquid into a medical three-way valve.
Disclosure of Invention
First, the technical problem to be solved
The utility model aims to solve the technical problem of the prior art, and provides an anti-countercurrent type needleless closed infusion connector which can prevent the outflow of liquid medicine after an external needleless injector is pulled out and improve the cleanliness of the surrounding environment when the needleless closed infusion connector is used.
(II) technical scheme
The utility model is realized by the following technical scheme: the utility model provides an anti-countercurrent needleless airtight infusion connector which comprises a shell, wherein a connecting screw groove is formed in the middle of the top end of the shell, a connecting screw head is arranged at the bottom end of the shell, three elastic diaphragms with arc-surface fan-shaped structures are distributed at the inner bottom end of the connecting screw head, an infusion catheter is arranged in the middle of the shell, the bottom end of the infusion catheter adopts a pointed cone-shaped structure, a side hole is formed in the pointed cone-shaped structure in the infusion catheter, and an annular clamping block is arranged at the bottom end of the outer wall of the infusion catheter.
Further, the connecting screw groove is formed on the shell, and the connecting screw groove is internally provided with internal threads.
By adopting the technical scheme, the connecting screw groove is mainly used for connecting the needleless closed infusion connector with an infusion structure on the medical three-way valve.
Further, the connecting screw head is formed on the shell, and the outer wall of the connecting screw head is provided with external threads.
By adopting the technical scheme, the connecting screw head is mainly used for connecting the needleless closed infusion connector with an external needleless injector.
Furthermore, the elastic membrane is adhered to the connecting screw head, and the three elastic membranes jointly form a bucket-shaped structure capable of opening and closing.
By adopting the technical scheme, the design has the advantages that after the external needleless injector is pulled out, the elastic membrane can automatically close under the self elastic action, so that the outflow of residual liquid medicine at the part connected with the external needleless injector on the needleless closed infusion connector is avoided, and the cleanness of the surrounding environment of the needleless closed infusion connector during use is ensured.
Further, the side holes and the clamping blocks are formed on the infusion catheter, and the clamping blocks are spliced with the shell.
Through adopting above-mentioned technical scheme, the side opening ensure that outside needleless syringe with connect the spiral shell head and close the back soon, the injection head inside on the needleless syringe can with the side opening intercommunication to can realize when pushing the push rod on the outside needleless syringe that the liquid medicine case carry in the infusion pipe.
Furthermore, the infusion catheter is in an open structure at one end of the connecting screw groove, and the pointed cone part at the bottom end of the infusion catheter is in a sealing structure.
Through adopting above-mentioned technical scheme, the convenient propelling movement of liquid medicine can be ensured in such a design.
(III) beneficial effects
Compared with the prior art, the utility model has the following beneficial effects:
the utility model relates to a needle-free sealed transfusion joint, which is characterized in that the needle-free sealed transfusion joint is mainly composed of a shell and a transfusion catheter with a tip structure, wherein the transfusion catheter is arranged in the shell, and the needle-free sealed transfusion joint with the structure can be matched with an external needle-free injector to inject therapeutic liquid into a medical three-way valve.
Drawings
FIG. 1 is a front cross-sectional view of an anti-reflux needleless closed infusion connector in accordance with the present utility model;
fig. 2 is a bottom view of an anti-reflux needleless closed infusion connector in accordance with the present utility model.
The reference numerals are explained as follows:
1. a connecting screw groove; 2. a housing; 3. an infusion catheter; 4. a clamping block; 5. a side hole; 6. connecting the screw heads; 7. an elastic membrane.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1-2, an anti-backflow needleless closed infusion connector in this embodiment includes a housing 2, a connection spiral groove 1 is provided in the middle of the top end of the housing 2, a connection spiral head 6 is installed at the bottom end of the housing 2, three elastic diaphragms 7 with arc-shaped fan-shaped structures are arranged at the inner bottom end of the connection spiral head 6, and the design has the advantages that after the external needleless injector is pulled out, the elastic diaphragms 7 can automatically close under the self elastic action, so that outflow of residual liquid medicine at the connecting part of the needleless closed infusion connector and the external needleless injector is avoided, the cleanness of the surrounding environment of the needleless closed infusion connector in use is ensured, an infusion catheter 3 is installed in the middle of the housing 2, a side hole 5 is provided at the bottom end of the infusion catheter 3 in a pointed cone-shaped structure in the infusion catheter 3, the side hole 5 ensures that the inner part of the injection head on the needleless injector can be communicated with the side hole 5 after the external needleless injector is screwed with the connection spiral head 6, so that the delivery in the medical solution box catheter 3 can be realized when pushing a push rod on the external needleless injector, and an annular clamping block 4 is installed at the bottom end of the infusion catheter 3.
As shown in fig. 1-2, in this embodiment, a connection screw groove 1 is formed on a housing 2, an internal thread is provided in the connection screw groove 1, the connection screw groove 1 is mainly used for connecting the needleless closed infusion connector with an infusion structure on a medical three-way valve, a connection screw head 6 is formed on the housing 2, an external thread is provided on an outer wall of the connection screw head 6, the connection screw head 6 is mainly used for connecting the needleless closed infusion connector with an external needleless injector, an elastic membrane 7 is adhered to the connection screw head 6, a side hole 5 and a clamping block 4 are both formed on an infusion catheter 3, the clamping block 4 is spliced with the housing 2, the infusion catheter 3 is positioned at one end of the connection screw groove 1 and is of an open type structure, and a pointed cone part at the bottom end of the infusion catheter 3 is of a sealing structure.
The specific implementation process of this embodiment is as follows: when the needle-free sealed infusion connector is used, the needle-free sealed infusion connector is connected with an infusion port on the movable three-way valve through the connecting screw groove 1, the needle-free sealed infusion connector is connected with an external needle-free injector through the connecting screw head 6, and then the needle-free sealed infusion connector can be put into use, wherein the injection head on the external needle-free injector is tightly contacted with a pointed cone structure at the bottom end of the infusion catheter 3 in the use process, so that the side hole 5 is communicated with the injection head on the external needle-free injector, the external liquid medicine can be conveyed into the infusion catheter 3 when a push rod on the needle-free injector is pushed, normal injection of the liquid medicine is ensured, and the elastic membrane 7 can be automatically closed under the self elastic action when the external needle-free injector is pulled out after the liquid medicine injection is finished, so that outflow of residual liquid medicine at the connection part of the needle-free sealed infusion connector with the external needle-free injector is avoided, and the clean surrounding environment of the needle-free sealed infusion connector in use is ensured.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An anti-reflux needleless closed infusion connector is characterized in that: including casing (2), connect helicoidal groove (1) have been seted up at casing (2) top middle part, connect spiral shell head (6) are installed to casing (2) bottom, connect spiral shell head (6) inner bottom to set up elastic membrane piece (7) of three cambered surface fan-shaped structures, casing (2) mid-mounting has infusion pipe (3), infusion pipe (3) bottom is for adopting pointed cone structure, side opening (5) have been seted up in the pointed cone structure department in infusion pipe (3), annular fixture block (4) are installed to infusion pipe (3) outer wall bottom.
2. An anti-reflux needle-free closed infusion connector as claimed in claim 1, wherein: the connecting screw groove (1) is formed on the shell (2), and the connecting screw groove (1) is internally provided with internal threads.
3. An anti-reflux needle-free closed infusion connector as claimed in claim 1, wherein: the connecting screw head (6) is formed on the shell (2), and external threads are arranged on the outer wall of the connecting screw head (6).
4. An anti-reflux needle-free closed infusion connector as claimed in claim 1, wherein: the elastic membrane (7) is adhered to the connecting screw head (6), and the three elastic membranes (7) jointly form a bucket-shaped structure capable of opening and closing.
5. An anti-reflux needle-free closed infusion connector as claimed in claim 1, wherein: the side holes (5) and the clamping blocks (4) are formed on the infusion catheter (3), and the clamping blocks (4) are spliced with the shell (2).
6. An anti-reflux needle-free closed infusion connector as claimed in claim 1, wherein: the infusion catheter (3) is located at one end of the connecting screw groove (1) and is of an opening structure, and a pointed cone part at the bottom end of the infusion catheter (3) is of a sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223116691.0U CN219001736U (en) | 2022-11-23 | 2022-11-23 | Anti-countercurrent needleless closed infusion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223116691.0U CN219001736U (en) | 2022-11-23 | 2022-11-23 | Anti-countercurrent needleless closed infusion connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219001736U true CN219001736U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223116691.0U Active CN219001736U (en) | 2022-11-23 | 2022-11-23 | Anti-countercurrent needleless closed infusion connector |
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| CN (1) | CN219001736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116919548A (en) * | 2023-09-05 | 2023-10-24 | 中国人民解放军陆军军医大学第一附属医院 | Safety type bubble nursing device |
-
2022
- 2022-11-23 CN CN202223116691.0U patent/CN219001736U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116919548A (en) * | 2023-09-05 | 2023-10-24 | 中国人民解放军陆军军医大学第一附属医院 | Safety type bubble nursing device |
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