CN220495367U - Flow guider for indwelling needle for intravenous infusion - Google Patents
Flow guider for indwelling needle for intravenous infusion Download PDFInfo
- Publication number
- CN220495367U CN220495367U CN202321506100.2U CN202321506100U CN220495367U CN 220495367 U CN220495367 U CN 220495367U CN 202321506100 U CN202321506100 U CN 202321506100U CN 220495367 U CN220495367 U CN 220495367U
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- China
- Prior art keywords
- pipe
- connector
- main pipe
- indwelling needle
- sleeve
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- 238000001802 infusion Methods 0.000 title claims abstract description 47
- 238000001990 intravenous administration Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 230000001154 acute effect Effects 0.000 abstract description 2
- 239000003814 drug Substances 0.000 description 16
- 229940079593 drug Drugs 0.000 description 15
- 230000002093 peripheral effect Effects 0.000 description 3
- 208000028399 Critical Illness Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000030090 Acute Disease Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a deflector for an indwelling needle for intravenous infusion, which comprises: the main pipe is used for being detachably connected with the indwelling needle connector for intravenous infusion, one end of the main pipe is provided with a front connector used for being detachably connected with the indwelling needle connector, and the other end of the main pipe is provided with a first connector used for being detachably connected with an infusion apparatus or an injector; a secondary pipe obliquely connected with one side of the main pipe, and a second joint used for detachably connecting with the infusion apparatus or the injector is arranged on the secondary pipe; and a backflow preventing structure provided in the main pipe or the sub pipe for preventing the liquid in the pipe from flowing to the other pipe. The flow guider has the advantages of simple structure, simple manufacturing process, low cost and convenient use, can be detachably connected to the connector of the indwelling needle for intravenous infusion according to the requirement, can be detachably connected with the syringe or the infusion set, and can solve the problem that two liquids are reflowed when different liquids are simultaneously conveyed by the aid of the backflow preventing structure arranged in the flow guider, so that timeliness and accuracy of intravenous administration of patients suffering from severe acute and critical diseases are ensured.
Description
Technical Field
The utility model relates to the technical field of medical treatment, in particular to a fluid director for an indwelling needle for intravenous infusion.
Background
In the process of rescuing and rescuing patients with critical diseases, a peripheral indwelling needle with two connectors as shown in figure 1 is often used for simultaneously inputting common medicines and medicines infused by an infusion pump. The medicine infused by the infusion pump is required to be infused into a patient at a uniform speed by setting the speed and the total amount of the infusion pump and the infusion pump is used for achieving the therapeutic effect by a certain pressure. Most of the drug types infused by the infusion pump are rescue drugs for maintaining the blood flow of the patient, and some are drugs for precisely controlling the infusion dosage and speed. In the treatment process of patients with critical illness, a plurality of medicines for pumps and common medicines are often infused at the same time.
When the patient infuses common medicines and pump medicines by using the same peripheral indwelling needle in daily work, as the infusion pump has certain pressure, when the pressure of the infusion pump side is larger than that of the common infusion side, the pump medicines can flow back to the common infusion side, so that the dosage of the infusion pump medicines cannot be accurately and timely infused into the patient, the treatment effect of the patient can be influenced, and serious patients can cause bad results of the patient and even death.
When a nurse gives emergency patients to rescue, the nurse needs to connect a common infusion device on one joint of the peripheral indwelling needle of the patients to carry out the infusion of common medicines, and uses an injector on the other side joint to carry out the push-infusion rescue medicines.
Therefore, in order to timely and effectively treat critical patients and ensure the life safety of each patient, a deflector for an indwelling needle for intravenous infusion is needed.
Disclosure of Invention
The utility model aims to solve the problems, and provides the deflector for the indwelling needle for intravenous infusion, which has the advantages of simple structure, simple manufacturing process, low cost and convenient use, can be detachably connected to the connector of the indwelling needle for intravenous infusion according to the needs, can be detachably connected with an injector or an infusion apparatus, and can solve the problem that two liquids are reflowed when different liquids are simultaneously conveyed by the anti-reflow structure arranged in the anti-reflow structure, thereby ensuring the timeliness and the accuracy of intravenous administration of patients with critical illness.
To achieve the above object, the present utility model provides a fluid director for an indwelling needle for intravenous infusion, comprising: the main pipe is used for being detachably connected with the indwelling needle connector for intravenous infusion, one end of the main pipe is provided with a front connector used for being detachably connected with the indwelling needle connector, and the other end of the main pipe is provided with a first connector used for being detachably connected with an infusion apparatus or an injector; a secondary pipe obliquely connected with one side of the main pipe, and a second joint used for detachably connecting with the infusion apparatus or the injector is arranged on the secondary pipe; and a backflow preventing structure provided in the main pipe or the sub pipe for preventing the liquid in the pipe from flowing to the other pipe.
Preferably, the backflow preventing structure includes: a frustum-shaped sleeve arranged in the main pipe or the auxiliary pipe and coaxial with the main pipe or the auxiliary pipe; one end of the inner bag is fixedly connected with the inner wall of the sleeve, and the other end of the inner bag can freely move in the sleeve.
Preferably, the small end of the frustum-shaped sleeve is closer to the first joint or the second joint of the main pipe or the auxiliary pipe than the large end of the frustum-shaped sleeve.
Preferably, the inner bag is a frustum-shaped inner bag made of a thin film.
Preferably, the large end of the frustum-shaped inner bag is fixedly connected with the inner wall of the sleeve.
Preferably, the diameter of the small end of the frustum-shaped inner bag is larger than that of the small end of the frustum-shaped sleeve.
Preferably, the length of the frustum-shaped inner bag is greater than the length from the connection part of the frustum-shaped inner bag and the frustum-shaped sleeve to the small end of the frustum-shaped sleeve.
Compared with the prior art, the deflector for the indwelling needle for intravenous transfusion has the following advantages:
the flow guider for the indwelling needle for intravenous infusion has the advantages of simple structure, simple manufacturing process, low cost and convenient use, can be detachably connected to the connector of the indwelling needle for intravenous infusion according to requirements, and can be detachably connected with an injector or an infusion apparatus, and the anti-backflow structure arranged in the flow guider can solve the problem that two liquids are backflowed when different liquids are simultaneously conveyed, so that the timeliness and the accuracy of intravenous administration of patients suffering from serious acute diseases are ensured.
The present utility model will be described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a prior art indwelling needle;
FIG. 2 is a schematic view showing the structure of a fluid director for an indwelling needle for intravenous infusion according to the present utility model;
FIG. 3 is a schematic view showing the structure of the present utility model in which the backflow preventing structure is installed on the secondary pipe and the inner bladder is floating in the direction crossing the primary pipe and the secondary pipe so that the liquid in the secondary pipe can flow in the direction of the primary pipe;
FIG. 4 is a schematic view of the structure of the inner bag of FIG. 3 not shown;
fig. 5 is a schematic view showing a structure in which the backflow preventing structure of the present utility model is installed on the sub pipe with the inner bag floating in the direction toward the second joint to prevent the liquid in the main pipe from flowing reversely into the sub pipe.
Detailed Description
As shown in fig. 2, which is a schematic structural view of a fluid director for an intravenous infusion set according to the present utility model, the fluid director according to the present utility model includes: a main tube 10 for detachable connection with an indwelling needle connector for intravenous infusion, one end of which is provided with a front connector 20 for detachable connection with an indwelling needle connector (see fig. 1), and the other end of which is provided with a first connector 30 for detachable connection with an infusion apparatus or syringe (not shown); a sub-tube 40 connected to one side of the main tube in an inclined manner, on which a second connector 50 for detachable connection with an infusion set or syringe is provided; and a backflow preventing structure provided in the main pipe or the sub pipe for preventing the liquid in the pipe from flowing to the other pipe. The external structure of each connector can be the same as that of the threaded connector matched with the indwelling needle connector in the prior art, and the external structure of each connector is not described in detail herein.
The connector at the front end of the flow director (namely the front connector 20) can be detachably connected with the indwelling needle connector, the two connectors at the rear end (namely the first connector 30 and the second connector 50) can be respectively or simultaneously detachably connected with the syringe and the infusion apparatus, the connection is convenient and quick, and whether the flow director is required to be installed on the indwelling needle connector or not can be determined according to the clinical actual condition, so that the situation that two different medicines conveyed by the indwelling needle are returned is prevented, the timeliness and the accuracy of intravenous administration of patients with acute and critical diseases are ensured, and the safety of patients is ensured.
Wherein, in order to prevent the drug delivered through the first connector and the second connector from flowing back into the low pressure pipeline, the present utility model adopts a backflow preventing structure as shown in fig. 3, which comprises: a frustum-shaped sleeve 42 disposed within and coaxial with the main or auxiliary tube; an inner bag 41 with one end fixedly connected with the inner wall of the sleeve and the other end freely movable in the sleeve. Preferably, the anti-backflow structure is arranged in the auxiliary pipe, and the anti-backflow structure is positioned close to the junction of the main pipe and the auxiliary pipe.
The backflow preventing structure is described below by taking an example in which the backflow preventing structure is provided in the sub-pipe.
As shown in fig. 3, the large end of the frustum-shaped sleeve is fixedly connected with the inner wall of the auxiliary pipe, a cavity is formed in the large end of the frustum-shaped sleeve, the small end of the frustum-shaped sleeve is closer to the second joint 50 of the auxiliary pipe than the large end of the frustum-shaped sleeve, and the large end of the frustum-shaped sleeve is arranged near the intersection of the auxiliary pipe and the main pipe. When designing, the auxiliary pipe, the frustum-shaped sleeve and the second joint are integrally formed, the inner cavity of the second joint can be a circular cavity, the diameter of the inner cavity is the same as that of the large end of the frustum-shaped sleeve, and the inner cavity in the auxiliary pipe between the second joint and the sleeve is also a circular cavity, the diameter of which is the same as that of the large end of the frustum-shaped sleeve, so that the inner cavity of the frustum-shaped sleeve is communicated with the inner cavity of the second joint, as shown in fig. 4.
The inner bag is a frustum-shaped inner bag made of a film, can float in a pipe, is fixedly connected with the inner wall of a sleeve pipe at the large end, gradually tapers towards the intersection direction of a main pipe and an auxiliary pipe, can flow through a middle through hole, has the small end diameter larger than that of the sleeve pipe and has a certain length. When the design is adopted, the length of the inner bag is reasonably determined, so that the length of the inner bag is larger than the length from the joint of the inner bag and the frustum-shaped sleeve to the small end of the frustum-shaped sleeve, and the inner bag can be folded and blocked at the small end of the sleeve to prevent the liquid from continuously flowing towards the direction of the second joint when the inner bag floats towards the direction of the second joint under the action of liquid input through the first joint. When the liquid is input through the second joint and floats towards the crossing direction of the main pipe and the auxiliary pipe, the liquid can smoothly flow into the main pipe through the inner bag and the auxiliary pipe. When in manufacture, the inner bag, the main pipe, the auxiliary pipe, the sleeve pipe and the joints can be integrally formed.
When the above-mentioned structure of the fluid director is needed according to the actual requirement of the infusion (for example, the fluid director is connected with any one of the indwelling needles with two connectors shown in fig. 1 or with the indwelling needle with one connector), the front connector of the front end of the fluid director is connected with the connector of the indwelling needle, and the first connector and the second connector of the rear end are respectively connected with the injector or the infusion apparatus to convey two different liquids, and each connector is connected with the indwelling needle, the injector and the infusion apparatus through threads, so that the connection is convenient and quick, and the timeliness of intravenous administration of the critical patients is ensured. When the transfusion pressure on the opposite side (such as the main pipe) is too large, the inner bag in the auxiliary pipe can be gradually extruded from the position close to the intersection of the main pipe and the auxiliary pipe and retract towards the small end direction close to the sleeve in the auxiliary pipe. Because the pipe diameter of the sleeve from the connection part of the sleeve and the inner bag to the small end direction is gradually reduced, the inner bag forms a barrier when being compressed (at most compressed to the narrow opening of the small end of the sleeve) and is folded, so that liquid is prevented from flowing back to the second joint. When the excessive pressure of the main pipe disappears, the inner bag can float towards the direction of the intersection under the action of the liquid input through the second connector, and the auxiliary pipe can normally flow to the main pipe for transfusion and enter the patient, so that the dosage of the liquid is ensured to be delivered when the patient is administrated by vein, and the transfusion is more accurate.
Although the present utility model has been described in detail hereinabove, the present utility model is not limited thereto, and modifications may be made by those skilled in the art in light of the principles of the present utility model, and it is therefore intended that all such modifications as fall within the scope of the present utility model.
Claims (6)
1. A fluid director for an indwelling needle for intravenous infusion, comprising:
the main pipe is used for being detachably connected with the indwelling needle connector for intravenous infusion, one end of the main pipe is provided with a front connector used for being detachably connected with the indwelling needle connector, and the other end of the main pipe is provided with a first connector used for being detachably connected with an infusion apparatus or an injector;
a secondary pipe obliquely connected with one side of the main pipe, and a second joint used for detachably connecting with the infusion apparatus or the injector is arranged on the secondary pipe;
a backflow preventing structure provided in a main pipe or a sub pipe for preventing a liquid in the pipe from flowing to another pipe, comprising: a frustum-shaped sleeve arranged in the main pipe or the auxiliary pipe and coaxial with the main pipe or the auxiliary pipe; one end of the inner bag is fixedly connected with the inner wall of the sleeve, and the other end of the inner bag can freely move in the sleeve.
2. The fluid director of claim 1 wherein the small end of the frustoconical sleeve is closer to the first or second connector of the primary or secondary tube than the large end of the frustoconical sleeve.
3. A deflector according to claim 1 or 2, wherein the inner bladder is a frusto-conical inner bladder made of a membrane.
4. A fluid director as claimed in claim 3 wherein the large end of the frusto-conical inner bladder is fixedly connected to the inner wall of the casing.
5. The fluid director of claim 4 wherein the diameter of the small end of the frustoconical inner bladder is greater than the diameter of the small end of the frustoconical sleeve.
6. The fluid director of claim 5 wherein the length of the frustoconical inner bladder is greater than the length of the frustoconical sleeve from where it joins the frustoconical sleeve to the small end of the frustoconical sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506100.2U CN220495367U (en) | 2023-06-14 | 2023-06-14 | Flow guider for indwelling needle for intravenous infusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506100.2U CN220495367U (en) | 2023-06-14 | 2023-06-14 | Flow guider for indwelling needle for intravenous infusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220495367U true CN220495367U (en) | 2024-02-20 |
Family
ID=89877780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321506100.2U Active CN220495367U (en) | 2023-06-14 | 2023-06-14 | Flow guider for indwelling needle for intravenous infusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220495367U (en) |
-
2023
- 2023-06-14 CN CN202321506100.2U patent/CN220495367U/en active Active
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