CN216439747U

CN216439747U - Disposable safety intravenous infusion needle

Info

Publication number: CN216439747U
Application number: CN202122647150.XU
Authority: CN
Inventors: 刘贞宽; 孙永; 刘压印; 马红旗
Original assignee: Shandong Chengwu Sainuo Medical Instruction Co ltd
Current assignee: Shandong Chengwu Sainuo Medical Instruction Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-05-06
Anticipated expiration: 2031-11-01

Abstract

The utility model belongs to the technical field of medical instruments and discloses a disposable safety intravenous infusion needle which comprises a connector, wherein one end of the connector is provided with a sealing cover, the other end of the connector is connected with a first hose, one end of the first hose, far away from the connector, is connected with a filter, the output end of the filter is connected with a second hose, one end of the second hose, far away from the filter, is connected with a check valve, the output end of the check valve is connected with a third hose, one end of the third hose, far away from the check valve, is connected with a needle handle, and one end, back to the third hose, of the needle handle is provided with a needle head. Reduce the pain of the patient and avoid unnecessary re-needling.

Description

Disposable safety intravenous infusion needle

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a disposable safety intravenous infusion needle.

Background

The venous transfusion is a method for inputting a large amount of sterile liquid, electrolyte or medicine into a body from veins by utilizing the principles of atmospheric pressure and hydrostatic pressure, the venous transfusion technology forms a set of complete system until 20 th century, and becomes one of the most common and most direct and effective clinical treatment means, the venous transfusion product also goes through three stages, before the 50 th century of 20 th century, the fully-open venous transfusion system is widely applied all the time, the second generation system is composed of glass and a disposable transfusion pipeline with a filter membrane, the pollution chance is reduced, the third generation fully-closed venous transfusion system replaces a transfusion container with a soft bag made of plastic materials, and the infusion container is gradually flattened by the external atmospheric pressure in the instillation process, so that the venous transfusion system has a good anti-pollution effect.

But the venous transfusion needle on the existing market contains a large amount of bacterial viruses of patient after using, when medical personnel when dressing the syringe needle protective sheath, easily stab the finger, and because the drop of protective sheath after abandoning, the transport, the cleanup crew is also stabbed easily, cause cross infection, sometimes when the infusion, because the patient is sleeping and medical personnel fail in time to change the liquid medicine, lead to the blood backward flow, if the blood that flows back appears solidifying, still must prick the needle again, otherwise can influence normal infusion, increase patient's misery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a disposable safety intravenous infusion needle to solve the problems of accidental injury of the needle head and blood backflow in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: disposable safety type venous transfusion needle, including the joint, the closing cap is installed to the one end that connects, and the other end is connected with first hose, the one end that the joint was kept away from to first hose is connected with the filter, the output of filter is connected with the second hose, the one end that the filter was kept away from to the second hose is connected with the check valve, the valve groove has been seted up to the inside of check valve, the internally mounted of valve groove has the case, the lower extreme of case is provided with the spring, just the output of check valve is connected with the third hose, the one end that the check valve was kept away from to the third hose is connected with the needle handle, the needle head is installed in the one end of third hose mutually in the needle handle.

Preferably, the needle handle is connected with a protective sleeve in a sliding manner, and sliding grooves are formed in two sides of the circumferential surface of the protective sleeve.

Preferably, the outer ring of the sealing cover is additionally provided with vertical stripes.

Preferably, both sides of the joint and the needle handle are provided with needle wings.

Preferably, the filter is internally provided with a filter membrane.

Preferably, the needle may have a diameter of 0.45mm, 0.55mm, 0.7mm or 0.9 mm.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the protective sleeve is provided with the sliding grooves on two sides and is connected to the needle handle in a sliding mode, the needle head is completely wrapped by the protective sleeve before the infusion needle is used, the protective sleeve is moved backwards along the needle handle when the infusion needle is used, the needle head wrapped in the protective sleeve is exposed, the two ends of each sliding groove are relatively narrow in the middle and can be clamped on two wings of the needle handle and cannot be loosened easily, and the protective sleeve is reset after the infusion needle is used, so that the needle head cannot be exposed outside, and medical care personnel and cleaning and carrying personnel are prevented from being accidentally injured to cause cross infection.

(2) The check valve is arranged on the hose close to the needle handle, when in transfusion, the valve core is pushed into the valve groove by liquid medicine, the check valve conducts normal transfusion, after the transfusion is finished, the valve core is reset from the valve groove under the action of the spring, the check valve is closed, the blood backflow in the blood vessel is prevented, the pain of a patient is reduced, and unnecessary needle prick is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the check valve of the present invention;

FIG. 3 is a schematic view of the filter of the present invention;

FIG. 4 is a schematic view of the needle assembly of the present invention in use;

FIG. 5 is a left side view of the protective sheath of the present invention;

figure 6 is a cross-sectional view of a protective casing of the present invention.

In the figure: 1. sealing the cover; 2. a joint; 3. a first hose; 4. a filter; 5. a second hose; 6. a check valve; 7. a third hose; 8. a needle handle; 9. a needle head; 10. a protective sleeve; 11. a chute; 12. a valve core; 13. a valve spool; 14. a spring; 15. and (5) filtering the membrane.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides the following technical solutions: a disposable safety intravenous infusion needle comprises a connector 2, a sealing cover 1 is installed at one end of the connector 2, the other end of the connector 2 is connected with a first hose 3, one end, far away from the connector 2, of the first hose 3 is connected with a filter 4, the output end of the filter 4 is connected with a second hose 5, one end, far away from the filter 4, of the second hose 5 is connected with a check valve 6, a valve groove 13 is formed in the check valve 6, a valve core 12 is installed in the valve groove 13, a spring 14 is arranged at the lower end of the valve core 12, the output end of the check valve 6 is connected with a third hose 7, one end, far away from the check valve 6, of the third hose 7 is connected with a needle handle 8, a needle head 9 is installed at one end, back to the third hose 7, of the needle handle 8 is opposite to the valve core 12, when liquid medicine pushes the valve core 12 into the valve groove 13, the liquid medicine flows through the check valve 6, after infusion is completed, the valve core 12 resets under the action of the spring, the check valve 6 is closed, can prevent blood from flowing backwards.

Further, sliding connection has protective sheath 10 on the needle handle 8, spout 11 has been seted up to the periphery both sides of protective sheath 10, original protective sheath 10 dismantled when extracting or inserting, very easily stabbing medical personnel, and after finishing using, lose easily and drop, can bring harm for cleanness and transport personnel like this, cause cross infection, then with

protective sheath

10 and 8 sliding connection of needle handle, the difficult hand of hindering of use, and also can not have the risk that drops, can avoid causing the accidental injury in clean handling.

Further, the vertical stripe is additionally arranged on the outer ring of the sealing cover 1, and as the sealing cover 1 and the connector 2 are tightly connected and the sealing cover 1 is small in size, the phenomenon of hand slip can occur during the dismounting, the vertical stripe is additionally arranged on the outer ring of the sealing cover to increase the friction force, so that the dismounting of the sealing cover 1 is more labor-saving.

Furthermore, the two sides of the joint 2 and the needle handle 8 are provided with needle wings, the needle wings on the two sides of the joint 2 can be conveniently held by hands, the joint 2 is connected with an infusion apparatus, the needle wings on the two sides of the needle handle 8 can be conveniently held by hands, in addition, the contact area is also increased for fixing the needle handle 8, and the needle head 9 can be prevented from rotating accidentally.

Further, the filter 4 is internally provided with a filter membrane 15, although the current liquid medicine production has high standards, the filter 4 is difficult to avoid insoluble particles in the liquid medicine, which can cause phlebitis, anaphylactic reaction or local tissue thrombosis and necrosis when entering a human body, and the filter 4 is used clinically for effectively intercepting the insoluble particles in the liquid medicine for intravenous infusion, so as to achieve purification treatment or filtration sterility and ensure the safety and reliability of clinical use.

Furthermore, the diameter of the needle 9 may be 0.45mm, 0.55mm, 0.7mm or 0.9mm, and the different diameters of the needle 9 correspond to different users and scenes.

The working principle and the using process of the utility model are as follows: the utility model discloses a when using, at first tear off the closing cap 1 that connects 2 department installation, be connected with the transfusion system joint 2, slide protective sheath 10 along needle handle 8 afterwards, expose syringe needle 9 wherein, open the transfusion system, the liquid medicine gets into filter 4 along first hose 3, get into second hose 5 after filter membrane 15 filters, valve case 12 top income valve groove 13 inside check valve 6 afterwards, check valve 6 switches on, after each hose is filled with to the liquid medicine, pause the transfusion system, through necessary disinfection, find the blood vessel and prick the needle, prick needle and accomplish back and fix needle handle 8 with medical sticky tape, after fixed the completion, open the transfusion system, the infusion normally goes on, after the infusion is accomplished, under spring 14's effect, case 12 resets, check valve 6 closes, if in time pull out the needle, the phenomenon of blood backward flow also can not appear.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Disposable safe type venous transfusion needle which is characterized in that: comprises a joint (2), one end of the joint (2) is provided with a sealing cover (1), the other end is connected with a first hose (3), one end of the first hose (3) far away from the joint (2) is connected with a filter (4), the output end of the filter (4) is connected with a second hose (5), one end of the second hose (5) far away from the filter (4) is connected with a check valve (6), a valve groove (13) is formed in the check valve (6), a valve core (12) is arranged in the valve groove (13), a spring (14) is arranged at the lower end of the valve core (12), and the output end of the check valve (6) is connected with a third hose (7), one end of the third hose (7) far away from the check valve (6) is connected with a needle handle (8), and a needle head (9) is arranged at one end of the needle handle (8) back to the third hose (7).

2. The disposable safety intravenous infusion needle according to claim 1, wherein: the needle handle (8) is connected with a protective sleeve (10) in a sliding mode, and sliding grooves (11) are formed in two sides of the circumferential surface of the protective sleeve (10).

3. The disposable safety intravenous infusion needle according to claim 2, wherein: and vertical stripes are additionally arranged on the outer ring of the sealing cover (1).

4. The disposable safety intravenous infusion needle according to claim 3, wherein: needle wings are arranged on the two sides of the joint (2) and the needle handle (8).

5. The disposable safety intravenous infusion needle according to claim 4, wherein: and a filter membrane (15) is arranged in the filter (4).

6. The disposable safety intravenous infusion needle according to claim 5, wherein: the needle (9) may have a diameter of 0.45mm, 0.55mm, 0.7mm or 0.9 mm.