CN220110199U - Switchable venous indwelling needle - Google Patents
Switchable venous indwelling needle Download PDFInfo
- Publication number
- CN220110199U CN220110199U CN202223435628.3U CN202223435628U CN220110199U CN 220110199 U CN220110199 U CN 220110199U CN 202223435628 U CN202223435628 U CN 202223435628U CN 220110199 U CN220110199 U CN 220110199U
- Authority
- CN
- China
- Prior art keywords
- connector
- fixedly connected
- needle
- pipeline
- hose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 5
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 claims description 4
- 229960002897 heparin Drugs 0.000 claims description 4
- 229920000669 heparin Polymers 0.000 claims description 4
- 238000001990 intravenous administration Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000008280 blood Substances 0.000 abstract description 9
- 210000004369 blood Anatomy 0.000 abstract description 9
- 208000007536 Thrombosis Diseases 0.000 abstract description 4
- 230000000151 anti-reflux effect Effects 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 238000001802 infusion Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to the technical field of medical appliances, and discloses a switchable venous indwelling needle, which comprises a needle head and is characterized in that: the tip fixedly connected with handle of syringe needle, just the syringe needle activity is pegged graft in the inside of first connector and hose, the tip fixedly connected with hose of first connector, just the inside of first connector is provided with prevents against the flow mechanism, prevent against the flow mechanism including prevent returning the flow piece and isolating plug, prevent returning the flow piece and isolating plug all fixed connection in the inside of first connector, just prevent returning the flow piece and lie in the hose side is the platykurtic, one side outer wall fixedly connected with pipeline of first connector can prevent the backward flow of blood through preventing against the setting of flow mechanism and sealing mechanism to inject next time, avoid the patient to appear returning blood and cause the phenomenon of thrombus when reducing the misery of patient's repeated puncture, in order to guarantee patient's health.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a switchable venous indwelling needle.
Background
The venous indwelling needle consists of stainless steel core, soft outer sleeve and plastic needle seat, and is one infusion tool for infusion with the soft outer sleeve and the needle core penetrating into blood vessel.
After the indwelling needle is inserted into a vein, when the steel needle is pulled out from the needle seat, blood can start flowing back into the infusion tube, so that infection at a wound and thrombus are easily caused, and the health of a patient is influenced.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a switchable intravenous needle, which solves the above-mentioned problems in the prior art.
The utility model provides the following technical scheme: the utility model provides a venous retention needle capable of being opened and closed, includes the syringe needle, the end fixedly connected with handle of syringe needle, just the syringe needle activity is pegged graft in the inside of first connector and hose, the end fixedly connected with hose of first connector, just the inside of first connector is provided with prevents countercurrent mechanism, prevents countercurrent mechanism including preventing back flow piece and isolating plug, prevent back flow piece and isolating plug all fixed connection in the inside of first connector, just prevent back flow piece is located the hose side is the platykurtic, and the holding power that loses the syringe needle begins extrusion shrink and is sealing state when preventing back flow piece and isolating plug to avoid the backward flow of blood pressure, one side outer wall fixedly connected with pipeline of first connector, just pipeline end fixedly connected with second connector, the inside of second connector is provided with sealing mechanism, and sealing mechanism includes sealing plug, fixing base, spring and inlet, the inside of second connector is located pipeline side fixedly connected with fixing base, the liquid inlet has been seted up to the bottom of fixing base and second connector, the inside place the spring, and the spring has the inside of placing and has the spring to make under the sealing plug and the sealing plug is movable under the condition when the sealing plug is set up to the sealing plug.
Further, a fixed block is fixedly connected to the outer wall of one side of the pipeline, an adjusting knob is movably connected to the inside of the fixed block, and the bottom of the adjusting knob is movably attached to the outer wall of the pipeline.
Further, the top of sealing plug is the inclined plane, just the sealing plug is the cross, is equipped with the gap between sealing plug top and the transfer line of inclined plane to the inside that the liquid medicine got into the second connector.
Further, the heparin cap is fixedly connected to the outer wall of one side of the second connector, and the first connector and the sealing plug are made of transparent plastic materials, so that medical staff can conveniently check the injection state.
The utility model has the technical effects and advantages that:
1. according to the utility model, the anti-reflux block and the isolation plug are made of silica gel materials, and the handle is pulled out through the needle head when the anti-reflux block and the isolation plug are used, at the moment, the anti-reflux block and the isolation plug lose the supporting force of the needle head and begin to extrude and shrink to be in a sealing state, so that the reflux of blood can be prevented, meanwhile, by matching with the arrangement of the sealing mechanism, after the injection is completed, the spring recovers the elasticity, and drives the sealing plug to move to be in a sealing state, so that the injection is carried out next time, the pain of repeated needle insertion of a patient is reduced, and the phenomenon of thrombus caused by blood return of the patient is avoided, so that the physical health of the patient is ensured.
2. According to the utility model, through the arrangement of the fixed block and the adjusting knob, the inner chute of the fixed block is inclined, and when the adjusting knob rotates in the fixed block, whether the inside of the pipeline is in an open-close state or not can be controlled.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic view of the overall development of the present utility model.
Fig. 3 is a schematic view of the internal structure of the connector of the present utility model.
Fig. 4 is a schematic view of the internal structure of the joint according to the present utility model.
The reference numerals are: 1. a needle; 2. a handle; 3. a first connector; 4. a hose; 5. a backflow prevention block; 6. a spacer plug; 7. a pipe; 8. a fixed block; 9. an adjustment knob; 10. a second connector; 11. a sealing plug; 12. a fixing seat; 13. a spring; 14. a liquid inlet; 15. heparin cap.
Detailed Description
The embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the present utility model, and the configuration of each structure described in the following embodiments is merely an example, and the venous indwelling needle for switching according to the present utility model is not limited to each structure described in the following embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making any creative effort are within the scope of protection of the present utility model.
Referring to fig. 1-4, the utility model provides a switchable venous indwelling needle, which comprises a needle head 1, wherein the end part of the needle head 1 is fixedly connected with a handle 2, the needle head 1 is movably inserted into the first connector 3 and the interior of a hose 4, the end part of the first connector 3 is fixedly connected with the hose 4, an anti-backflow mechanism is arranged in the first connector 3, the anti-backflow mechanism comprises an anti-backflow block 5 and a separation plug 6, the anti-backflow block 5 and the separation plug 6 are fixedly connected into the first connector 3, the anti-backflow block 5 is flat on the side of the hose 4, the anti-backflow block 5 and the separation plug 6 are made of silica gel, the handle 2 is pulled out outwards through the needle head 1 when in use, at this time, the anti-backflow block 5 and the separation plug 6 lose the supporting force of the needle head 1, the outer wall of one side of the first connector 3 is fixedly connected with a pipeline 7, the end part of the pipeline 7 is fixedly connected with a second connector 10, the interior of the second connector 10 is provided with a sealing mechanism, the sealing mechanism comprises a fixed seat 11, a spring 13 and a sealing plug 14 and a sealing plug 10, the inner side of the second connector 10 is connected with the second connector 10 through the fixed seat 12 and the fixed connector 12, the inner side of the second connector 10 is connected with the fixed seat 12 and the second connector 10, the inner side of the sealing plug 10 is connected with the fixed seat 10 through the fixed connector 12, and the inner part of the fixed seat 12 is connected with the second connector 10, and the inner part of the fixed connector 10 is opened through the fixed connector 12, and the inner part of the fixed connector 11 is connected with the second connector 10 through the fixed connector 12, and the inner part of the sealing plug is connected with the inner part of the sealing plug 10 through the fixed connector 12, and the inner part is placed inside the sealing neck 11, when the transfusion tube is opened.
Wherein, one side outer wall fixedly connected with fixed block 8 of pipeline 7, the inside swing joint of fixed block 8 has adjust knob 9, and adjust knob 9's bottom activity laminating in pipeline 7's outer wall, and this fixed block 8's inside spout is the slope form, and when adjust knob 9 rotated in fixed block 8's inside, steerable pipeline 7's inside was the state of opening and shutting.
Wherein, the top of sealing plug 11 is the inclined plane, and sealing plug 11 is the cross, and when the top of sealing plug 11 sets up to the inclined plane, when the transfer line pushes down, be equipped with the gap between sealing plug 11 top and the transfer line on inclined plane to the inside of the liquid medicine entering to second connector 10.
Wherein, the outer wall fixedly connected with heparin cap 15 of one side of second connector 10, first connector 3 and sealing plug 11 are transparent plastic material, and transparent plastic can make things convenient for medical personnel to look over injection state when using.
The working principle of the utility model is as follows:
when the switchable venous indwelling needle is used, the adjusting knob 9 rotates in the fixing block 8, after the adjusting knob 9 presses down the pipeline 7 fully to be in a closed state, the hose 4 can be pulled out through the needle 1 after being injected into a vein of a patient through the needle 1, at the moment, the anti-reflux block 5 and the isolating plug 6 lose the supporting force of the needle 1 and begin to extrude and shrink to be in a sealed state, meanwhile, the pipeline 7 is extruded to be in a sealed state, so that the backflow of blood is avoided in a vacuum environment, when the needle 1 is completely extracted, the adjusting knob 9 rotates in the fixing block 8, so that the pipeline 7 starts to be opened, at the moment, a medical staff can observe the backflow state of the blood, then, the pipeline 7 is closed again through the adjusting knob 9, when transfusion is needed, the anti-reflux block 5 and the isolating plug 6 are connected through the transfusion tube and the second connector 10, and at the time of connection, the end of the infusion tube enters into the second connector 10 and drives the sealing plug 11 to move downwards, the spring 13 is pressed downwards to open the internal channel of the second connector 10, the liquid medicine flows into the interior of the pipeline 7 through the liquid inlet 14, the pipeline 7 can be opened through the adjusting knob 9 to further convey the liquid medicine into the body of a patient, when the medicine conveying is finished, the pipeline 7 can be closed again through the adjusting knob 9 to avoid the backflow of blood, at the moment, the infusion tube can be separated from the end of the second connector 10, at the moment, the spring 13 recovers elasticity, drives the sealing plug 11 to move upwards to play a sealing state, can be connected with the end of the second connector 10 again through the needle cylinder to push the sealing plug 11 to move downwards again under the condition of pressure, and the pipeline 7 is opened again through the adjusting knob 9 to inject a certain amount of physiological saline into the body of the patient, when the patient is not injured, the interior of the pipeline 7, the first connector 3 and the hose 4 is cleaned, the pipeline 7 is closed again through the adjusting knob 9, the needle cylinder is separated from the second connector 10, the spring 13 restores the elasticity, and the sealing plug 11 is driven to move upwards again to play a sealing state, so that the next injection is carried out, the pain of repeated needle insertion of the patient is reduced, and the phenomenon of thrombus caused by blood return of the patient is avoided, so that the physical health of the patient is ensured.
The last points to be described are: first, in the description of the present utility model, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (4)
1. A switchable venous indwelling needle comprising a needle head (1), characterised in that: the end part of the needle head (1) is fixedly connected with the handle (2), the needle head (1) is movably inserted into the first connecting head (3) and the hose (4), the end part of the first connecting head (3) is fixedly connected with the hose (4), the inside of the first connecting head (3) is provided with a backflow preventing mechanism, the backflow preventing mechanism comprises a backflow preventing block (5) and a separating plug (6), the backflow preventing block (5) and the separating plug (6) are fixedly connected to the inside of the first connecting head (3), the backflow preventing block (5) is positioned on the side of the hose (4) and is flat, one side outer wall of the first connecting head (3) is fixedly connected with a pipeline (7), the end part of the pipeline (7) is fixedly connected with a second connecting head (10), the inside of the second connecting head (10) is provided with a sealing mechanism, the sealing mechanism comprises a sealing plug (11), a fixing seat (12), a spring (13) and a liquid inlet (14), the inside of the second connecting head (10) is fixedly connected with the fixing seat (12) and the fixing seat (12) is positioned on the side of the inside of the second connecting head (10), and the bottom of the sealing plug (11) is movably connected with the inside of the fixing seat (12).
2. A switchable intravenous needle as claimed in claim 1 wherein: one side outer wall fixedly connected with fixed block (8) of pipeline (7), the inside swing joint of fixed block (8) has adjust knob (9), just the bottom activity of adjust knob (9) laminate in the outer wall of pipeline (7).
3. A switchable intravenous needle as claimed in claim 1 wherein: the top of the sealing plug (11) is an inclined plane, and the sealing plug (11) is cross-shaped.
4. A switchable intravenous needle as claimed in claim 1 wherein: the outer wall of one side of the second connector (10) is fixedly connected with a heparin cap (15), and the first connector (3) and the sealing plug (11) are made of transparent plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223435628.3U CN220110199U (en) | 2022-12-21 | 2022-12-21 | Switchable venous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223435628.3U CN220110199U (en) | 2022-12-21 | 2022-12-21 | Switchable venous indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220110199U true CN220110199U (en) | 2023-12-01 |
Family
ID=88895953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223435628.3U Active CN220110199U (en) | 2022-12-21 | 2022-12-21 | Switchable venous indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220110199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117771462A (en) * | 2024-02-26 | 2024-03-29 | 四川大学华西医院 | Bone marrow extraction equipment |
-
2022
- 2022-12-21 CN CN202223435628.3U patent/CN220110199U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117771462A (en) * | 2024-02-26 | 2024-03-29 | 四川大学华西医院 | Bone marrow extraction equipment |
| CN117771462B (en) * | 2024-02-26 | 2024-05-10 | 四川大学华西医院 | Bone marrow extraction equipment |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |