CN210159019U - Anti-reflux precise indwelling needle - Google Patents
Anti-reflux precise indwelling needle Download PDFInfo
- Publication number
- CN210159019U CN210159019U CN201920706391.7U CN201920706391U CN210159019U CN 210159019 U CN210159019 U CN 210159019U CN 201920706391 U CN201920706391 U CN 201920706391U CN 210159019 U CN210159019 U CN 210159019U
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- China
- Prior art keywords
- indwelling needle
- way valve
- needle
- reflux
- shell
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- Expired - Fee Related
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Abstract
The utility model discloses an anti-reflux precise indwelling needle, which is characterized by comprising an indwelling needle shell, wherein the side surface of the indwelling needle shell is provided with a needle wing, a needle tube is arranged in the indwelling needle shell, the other side surface of the indwelling needle shell is provided with a Y interface, and the Y interface is connected with a heparin cap through an extension tube; a one-way valve is arranged in the Y connector, and filter screens are arranged at the inlet end and the outlet end of the one-way valve; the one-way valve arranged at the Y interface can be used for precise anti-reflux, after injection and pushing, the liquid medicine enters along the extension tube through the inlet end of the one-way valve, the piston is pushed open under the injection pushing force, the liquid medicine enters the needle tube in the remaining needle shell through the outlet end and is injected into a human body, and the blood of the human body flows back to the extension tube, so that the anti-reflux is realized; and the filter screen or the filter membrane can effectively filter impurities, and the problem that the remaining needle is exposed to the outside and contacts dust and the like is solved.
Description
Technical Field
The utility model relates to a prevent accurate needle of keeping somewhere against current belongs to and keeps somewhere needle technical field.
Background
The indwelling needle is widely used in clinic, and aims to reduce the pain and the fear of needle injection of the sick children caused by repeated venipuncture, reduce the anxiety of parents and facilitate clinical medication. The indwelling needle has the advantages that the indwelling needle is used for blood return, the blood return condition is different, the sealing tube cannot be sealed at all, but after the blood return, the blood is coagulated to cause the difficulty in injecting and injecting again, the indwelling needle needs to be pulled out at the moment to prevent thrombus from entering the body, the coagulated thrombus is picked out, fluid infusion and the like are carried out, and the blood return condition of the indwelling needle causes the trouble of later-period nursing.
Disclosure of Invention
The utility model discloses a solve common remaining needle blood return, the thrombus that produces behind the blood return leads to the injection to inject difficulty scheduling problem, provides a prevent accurate needle of remaining against the current.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the anti-reflux precise indwelling needle is characterized by comprising an indwelling needle shell, wherein a needle wing is arranged on the side surface of the indwelling needle shell, a needle tube is arranged in the indwelling needle shell, a Y-shaped port is arranged on the other side surface of the indwelling needle shell, and the Y-shaped port is connected with a heparin cap through an extension tube; and a one-way valve is arranged in the Y connector, and filter screens are arranged at the inlet end and the outlet end of the one-way valve.
Furthermore, the left side of the one-way valve is an inlet end, the right side of the one-way valve is an outlet end, a cavity is arranged between the inlet end and the outlet end, a piston is arranged in the cavity, an inlet hole is formed in the wall of the piston, and the piston is connected to the retaining ring through a spring.
Furthermore, the inlet end of the one-way valve is connected with the extension pipe, and the outlet end of the one-way valve is connected with the remaining needle shell.
Further, the filter screen includes, but is not limited to, a filter membrane.
Furthermore, the check ring and the spring are made of non-metal materials.
Furthermore, a clamp is arranged on the extension pipe.
Further, the one-way valve is arranged in the Y-shaped interface and is formed into a whole.
Because the utility model discloses an one-way valve and filter screen isotructure to can obtain following beneficial effect:
through the one-way valve that Y kneck was equipped with, can do the precision and prevent against current, after the injection pushed away, the liquid medicine got into along the entrance point of extension pipe through one-way valve, backs up the piston under the injection thrust, entered into the needle tubing of remaining in the needle casing through the exit end and injected into the human body, and the blood of human body takes place to flow against the current to the extension pipe in, and then realizes preventing against current. And the filter screen or the filter membrane can effectively filter impurities, and the problem that the remaining needle is exposed to the outside and contacts dust and the like is solved.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a closed structure view of the one-way valve of the present invention.
Fig. 3 is a structure view of the one-way valve of the present invention.
1. The needle comprises a needle wing, 2, an indwelling needle shell, 3, a Y connector, 4, a one-way valve, 5, an extension pipe, 6, a filter screen, 7, a needle tube, 8, a piston, 9, a spring, 10, an inlet hole, 11 and a retainer ring.
Detailed Description
The invention will be further explained with reference to the drawings:
as shown in fig. 1-3, a reverse flow prevention precision indwelling needle is characterized by comprising an indwelling needle housing 2, a needle wing 1 is arranged on the side surface of the indwelling needle housing 2, a needle tube 7 is arranged in the indwelling needle housing 2, a Y port 3 is arranged on the other side surface of the indwelling needle housing 2, and the Y port 3 is connected with a heparin cap through an extension tube 5; a one-way valve 4 is arranged in the Y connector 3, and a filter screen 6 is arranged at the inlet end and the outlet end of the one-way valve 4. The left side of the one-way valve 4 is an inlet end, the right side of the one-way valve is an outlet end, a cavity is arranged between the inlet end and the outlet end, a piston 8 is arranged in the cavity, an inlet hole 10 is formed in the wall of the piston 8, and the piston is connected to a retainer ring 11 through a spring 9. The inlet end of the one-way valve 4 is connected with an extension tube 5, and the outlet end is connected with the indwelling needle shell 2. The screen 6 includes, but is not limited to, a filter membrane. The retainer ring and the spring are made of non-metal materials, such as: plastic materials, rubber materials and resin materials. The extension pipe 5 is provided with a clamp. The one-way valve 4 is arranged in the Y interface 3 and is formed into a whole.
The utility model discloses a theory of operation and working process as follows:
when the indwelling needle is used for puncture, the left hand stretches the skin, the right hand holds the needle wing to perform needle insertion at an angle of 15-30 degrees above the blood vessel, the blood vessel is punctured directly, the needle is inserted, the left hand holds the Y-shaped connector 3, and the right hand withdraws the needle core and fixes the needle core through dressing.
The operation is the use process of the remaining needle, and the principle of the one-way valve 4 in the utility model is as follows:
after the remaining needle is punctured and fixed, at least one time of transfusion is needed, a heparin cap is punctured during transfusion, under the condition of injection, the pressure of the inlet end of the one-way valve 4 is high, the piston 8 moves rightwards under the pressure of the spring (shown in figure 3), liquid medicine enters the cavity and enters the rear end of the piston 8 through the inlet hole 10 on the piston 8, and then the liquid medicine enters the remaining needle shell 2 from the outlet end.
After the bolus injection is finished, the spring is pressed slightly and rebounds, so that the piston 8 blocks the inlet end (as shown in fig. 2), and the blood of the human body cannot flow back.
The filter screen or the filter membrane can effectively filter impurities, and the problems that the remaining needle is exposed outside and contacts with dust and the like, the diameter of a filter membrane hole is 0.2-5 microns of a gap, the filter membrane can filter particles with the diameter of 5 microns and smaller, even bacteria, and air bubbles can be eliminated are solved, so that the filter membrane can adopt a polyether sulfone membrane, a fiber membrane and a nuclear pore membrane.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above description of the embodiments is only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. The anti-reflux precise indwelling needle is characterized by comprising an indwelling needle shell (2), wherein a needle wing (1) is arranged on the side surface of the indwelling needle shell (2), a needle tube (7) is arranged in the indwelling needle shell (2), a Y connector (3) is arranged on the other side surface of the indwelling needle shell (2), and the Y connector (3) is connected with a heparin cap through an extension tube (5); a one-way valve (4) is arranged in the Y connector (3), and filter screens (6) are arranged at the inlet end and the outlet end of the one-way valve (4); the left side of the one-way valve (4) is an inlet end, the right side of the one-way valve is an outlet end, a cavity is arranged between the inlet end and the outlet end, a piston (8) is arranged in the cavity, an inlet hole (10) is formed in the wall of the piston (8), and the piston is connected to a retainer ring (11) through a spring (9).
2. The anti-reflux precision indwelling needle according to claim 1, wherein: the inlet end of the one-way valve (4) is connected with an extension tube (5), and the outlet end is connected with the indwelling needle shell (2).
3. The anti-reflux precision indwelling needle according to claim 1, wherein: the filter screen (6) adopts a filter membrane.
4. The anti-reflux precision indwelling needle according to claim 2, wherein: the retainer ring (11) and the spring are both made of non-metal materials.
5. The anti-reflux precision indwelling needle according to claim 1, wherein: the extension pipe (5) is provided with a clamp.
6. The anti-reflux precision indwelling needle according to claim 1, wherein: the one-way valve (4) is arranged in the Y interface (3) and is integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920706391.7U CN210159019U (en) | 2019-05-17 | 2019-05-17 | Anti-reflux precise indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920706391.7U CN210159019U (en) | 2019-05-17 | 2019-05-17 | Anti-reflux precise indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210159019U true CN210159019U (en) | 2020-03-20 |
Family
ID=69792104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920706391.7U Expired - Fee Related CN210159019U (en) | 2019-05-17 | 2019-05-17 | Anti-reflux precise indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210159019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760125A (en) * | 2020-07-16 | 2020-10-13 | 徐敏旺 | Puncture needle assembly for internal medicine |
-
2019
- 2019-05-17 CN CN201920706391.7U patent/CN210159019U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760125A (en) * | 2020-07-16 | 2020-10-13 | 徐敏旺 | Puncture needle assembly for internal medicine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200320 |