CN209885022U

CN209885022U - Anti-backflow joint

Info

Publication number: CN209885022U
Application number: CN201920248205.XU
Authority: CN
Inventors: 张霞
Original assignee: Individual
Current assignee: Qinghai Provincial People's Hospital
Priority date: 2019-02-27
Filing date: 2019-02-27
Publication date: 2020-01-03
Anticipated expiration: 2029-02-27

Abstract

The utility model discloses a prevent joint that backflows, including preventing the main part that backflows, prevent that backflows main part top center is equipped with first interface, prevent that backflows main part bottom center is equipped with the second interface, prevent that backflows main part inner wall is equipped with annular buoy valve baffle, prevent the inside buoy valve that is equipped with swing joint of backflows main part, buoy valve includes buoy valve overhead gage, buoy valve lower baffle, a plurality of fretwork class check and prevents the protruding post of backflowing. The utility model discloses when using, when liquid flows to the second interface from first interface, the buoy valve moves down, liquid can follow the buoy valve and prevent the cylinder buoy valve of the fretwork water grid flow direction fretwork of refluence main part inner wall, liquid flows through the fretwork water grid at last, flow to the second interface, the infusion is smooth and easy with the drainage, and when liquid flows to first interface from the second interface, liquid promotes the buoy valve and removes, baffle and annular buoy valve baffle in close contact with under the buoy valve, the unable first interface of flow direction of second kneck liquid, the event plays the effect of preventing the refluence.

Description

Anti-backflow joint

Technical Field

The utility model relates to a medical joint technical field specifically is a prevent joint that backflows.

Background

At present, the problems caused by liquid backflow clinically mainly have two aspects, namely, the backflow of blood in a transfusion pipeline is easy to occur in venous transfusion; secondly, urinary tract infection is increased due to urine backflow of the urinary catheter.

Intravenous infusion is the infusion of liquid into the human body by using the principles of atmospheric pressure and hydrostatic pressure. However, due to shortage of clinical nurses, the patients cannot be cared for in the whole infusion process, and blood return of the infusion pipeline is caused by various reasons, which mainly comprises the following reasons: when the transfusion is finished, the needle is not pulled out or the transfusion is continued in time, so that the blood backflow is caused; the liquid level of the infusion bottle is lowered too low and is smaller than the blood pressure of the human body, so that the blood backflow occurs; some patients are not allowed to have illness, blood pressure can be measured only at the infusion side, and blood can flow back under the pressure of the cuff during pressure measurement; when the patient restlesss, the blood backflow is caused by the symptoms of muscle tension, vasoconstriction and the like. The blood backflow easily increases the tube blocking rate of the puncture needle, the patient needs to puncture again to increase pain, the medical expense is increased, and the workload of nursing staff is increased.

The urinary catheter drains urine by utilizing the gravity principle, but because of the lack of knowledge of patients clinically and the incorrect nursing of medical staff, the drainage tube is easily higher than the plane of the urinary bladder, so that the urine flowing out of the urinary catheter and the urinary bag flows back, and the urinary tract infection rate of the patients is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a prevent joint that backflows, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent joint that backflows, is including preventing the backflowing main part, prevent that backflowing main part top center is equipped with first interface, prevent that backflowing main part bottom center is equipped with the second interface, prevent that backflowing main part inner wall is equipped with annular buoy valve baffle, prevent the inside cavity that is equipped with of backflowing main part, the inside buoy valve that is equipped with swing joint of cavity, the buoy valve is the hollow cylinder structure, buoy valve top is equipped with buoy valve overhead gage, buoy valve bottom is equipped with buoy valve lower baffle, annular buoy valve baffle is located buoy valve overhead gage with between the baffle under the buoy valve, buoy valve lateral wall is equipped with a plurality of fretwork class check, buoy valve overhead gage bottom in the buoy valve outside is equipped with a plurality of and prevents the protruding post that backflows.

As an optimal technical scheme of the utility model, first joint is anti-skidding screw thread ureter interface, the second interface is the urine bag interface.

As an optimal technical scheme of the utility model, the first joint is infusion end external screw thread interface, the second interface is infusion needle internal screw thread interface.

As an optimal technical scheme of the utility model, the length of preventing the protruding post of backflowing is less than buoy valve overhead gage with interval between the baffle under the buoy valve.

As an optimal technical scheme of the utility model, a plurality of prevent that the protruding post annular of backflowing arranges in buoy valve overhead gage bottom.

As an optimized technical scheme of the utility model, prevent the backward flow main part with the buoy valve is hard foam and makes.

As an optimal technical scheme of the utility model, the buoy valve overhead gage with the buoy valve lower baffle diameter equals, just the diameter of buoy valve overhead gage is greater than the top surface diameter of cylinder.

As an optimal technical scheme of the utility model, first interface outer wall top is equipped with the external screw thread, second interface inner wall bottom is equipped with the internal thread.

As an optimized technical scheme of the utility model, prevent that main part outer wall edge is all established to the arc structure.

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

1. the utility model discloses an at the inside buoy valve that sets up swing joint of main part that prevents backflowing, the flow direction of buoy valve accessible liquid removes, carries out the automatic backflowing of preventing.

2. The utility model discloses a set up baffle under annular buoy valve baffle, buoy valve overhead gage and the buoy valve, can carry on spacingly and stop the buoy valve.

3. The utility model discloses a set up fretwork class of flow check and prevent the protruding post of backflowing, liquid is from first interface when flowing to the second interface, the buoy valve downstream, prevent backflowing protruding post and the contact of annular buoy valve baffle, liquid can be followed buoy valve and prevent the fretwork class of flow check of backflowing main part inner wall and prevent the cylinder buoy valve of backflowing protruding post flow direction fretwork, and the inside hollow structure of buoy valve, the liquid flow of being convenient for, liquid flows through the buoy valve lower extreme and the fretwork class of flow check of preventing the backflowing main part at last, flow direction second interface, infusion and drainage are smooth and easy, and when liquid flows to first interface from the second interface, liquid promotes buoy valve and removes, baffle and annular buoy valve baffle in close contact with under the buoy valve, the unable first interface that flows to second kneck liquid, the event plays the effect of preventing backflowing.

Drawings

Fig. 1 is a schematic view of the overall structure of an anti-backflow joint of the present invention;

FIG. 2 is an internal cross-sectional view of the anti-backflow joint in an open state;

FIG. 3 is an internal cross-sectional view of the anti-backflow joint in the closed state;

fig. 4 is a front view of the anti-backflow connector float valve of the present invention;

fig. 5 is a top view of the anti-backflow joint float valve of the present invention.

In the figure: 1. a backflow prevention body; 2. a first interface; 3. a second interface; 4. a cavity; 5. an annular float valve baffle; 6. a float valve; 7. a float valve upper baffle; 8. a float valve lower baffle; 9. hollowing out the flow grid; 10. anti-reflux protruding columns; 11. and (4) external threads.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a prevent joint that backflows, is including preventing backflow body 1, prevent that 1 top center of backflow body is equipped with first interface 2, prevent that 1 bottom center of backflow body is equipped with second interface 3, prevent that 1 inner wall of backflow body is equipped with annular buoy valve baffle 5, prevent that 1 inside cavity 4 that is equipped with of backflow body, the inside buoy valve 6 that is equipped with swing joint of cavity 4, buoy valve 6 is the hollow cylinder structure, 6 tops of buoy valve are equipped with buoy

valve overhead gage

7, 6 bottoms of buoy valve are equipped with buoy valve lower baffle 8, annular buoy valve baffle 5 is located buoy valve overhead gage 7 with between the baffle 8 under the buoy valve, 6 lateral walls of buoy valve are equipped with a plurality of

fretwork class check

9, 7 bottoms of buoy valve overhead gage in the 6 outside of buoy valve is equipped with a plurality of and prevents protruding post 10 that backflows.

In this embodiment, preferably, the first connector 2 is an anti-slip threaded urinary catheter interface, and the second connector 3 is a urinary bag interface.

In this embodiment, preferably, the first connector 2 is an infusion end male connector, and the second connector 3 is an infusion needle female connector.

In this embodiment, it is preferable that the length of the backflow prevention protrusion column 10 is smaller than the interval between the upper baffle 7 and the lower baffle 8 of the float valve.

In this embodiment, preferably, a plurality of the anti-backflow protruding columns 10 are annularly arranged at the bottom of the upper baffle 7 of the float valve.

In this embodiment, it is preferable that the backflow prevention body 1 and the float valve 6 are made of a hard foam material.

In this embodiment, it is preferable that the diameter of the upper float valve baffle 7 and the lower float valve baffle 8 is equal, and the diameter of the upper float valve baffle 7 is larger than the diameter of the top surface of the cylinder.

In this embodiment, preferably, the top of the outer wall of the first connector 2 is provided with an external thread 11, and the bottom of the inner wall of the second connector 3 is provided with an internal thread.

In this embodiment, preferably, the corners of the outer wall of the backflow-preventing body 1 are both arc-shaped.

The utility model discloses a theory of operation or use as follows: when the connector is used for transfusion, a venous transfusion device of a patient is connected with a transfusion needle through the backflow prevention connector, when liquid flows from a first connector 2 to a second connector 3, the float valve 6 moves downwards, the backflow prevention convex column 10 is contacted with the annular float valve baffle 5, the liquid can flow to the hollowed cylindrical float valve 6 from the hollow water flow lattice 9 on the inner wall of the backflow prevention main body 1 and the hollow backflow prevention convex column 10, the hollow structure in the float valve 6 is convenient for the liquid to flow, the liquid finally flows out through the lower end of the float valve 6 and the hollow flow grid 9 of the backflow prevention main body 1 to flow to the second connector 3, the transfusion is smooth, when the liquid flows to the first interface 2 from the second interface 3, the liquid pushes the float valve 6 to move, the lower baffle 8 of the float valve is tightly contacted with the annular float valve baffle 5, and the liquid at the second interface 3 can not flow to the first interface 2, so that the function of preventing blood from flowing back is achieved; when the connector is used for catheterization, a catheter of a patient is connected with a urine bag through the backflow prevention connector, when liquid flows from the first connector 2 to the second connector 3, the buoy valve 6 moves downwards, the backflow prevention convex column 10 is contacted with the annular buoy valve baffle 5, the liquid can flow to the hollowed cylindrical buoy valve 6 from the buoy valve 6 and the hollowed water flow lattice 9 on the inner wall of the backflow prevention body 1 through the backflow prevention convex column 10, the hollow structure in the buoy valve 6 facilitates the liquid to flow, the liquid finally flows out through the lower end of the buoy valve 6 and the hollow water flow grid 9 of the backflow prevention main body 1 to flow to the second connector 3, the drainage is smooth, when the liquid flows from the second connector 3 to the first connector 2, the liquid pushes the float valve 6 to move, the lower baffle 8 of the float valve is in close contact with the annular baffle 5 of the float valve, and the liquid at the second connector 3 cannot flow to the first connector 2, so that the function of preventing urine from flowing back is achieved.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent joint that backflows, includes prevents backflowing main part (1), its characterized in that: a first connector (2) is arranged at the center of the top of the backflow-preventing body (1), a second connector (3) is arranged at the center of the bottom of the backflow-preventing body (1), the inner wall of the backflow-preventing body (1) is provided with an annular buoy valve baffle (5), the inside of the backflow-preventing body (1) is provided with a cavity (4), a float valve (6) is movably connected in the cavity (4), the float valve (6) is of a hollow cylinder structure, the top of the float valve (6) is provided with a float valve upper baffle (7), the bottom of the float valve (6) is provided with a float valve lower baffle (8), the annular float valve baffle (5) is arranged between the float valve upper baffle (7) and the float valve lower baffle (8), the outer side wall of the buoy valve (6) is provided with a plurality of hollowed-out flow grids (9), the bottom of the upper baffle plate (7) of the float valve is provided with a plurality of anti-backflow protruding columns (10) on the outer side of the float valve (6).

2. The anti-backflow fitting of claim 1, wherein: the first connector (2) is an anti-skid threaded catheter connector, and the second connector (3) is a urine bag connector.

3. The anti-backflow fitting of claim 1, wherein: the first interface (2) is an external thread interface of the infusion end, and the second interface (3) is an internal thread interface of the infusion needle.

4. The anti-backflow fitting of claim 1, wherein: the length of the backflow-preventing protruding column (10) is smaller than the interval between the upper baffle (7) of the float valve and the lower baffle (8) of the float valve.

5. The anti-backflow fitting of claim 1, wherein: the plurality of anti-backflow protruding columns (10) are annularly arranged at the bottom of the upper baffle (7) of the float valve.

6. The anti-backflow fitting of claim 1, wherein: the backflow prevention body (1) and the float valve (6) are both made of hard foam materials.

7. The anti-backflow fitting of claim 1, wherein: the diameters of the upper baffle (7) and the lower baffle (8) are equal, and the diameter of the upper baffle (7) is larger than the diameter of the top surface of the cylinder.

8. The anti-backflow fitting of claim 1, wherein: the top of the outer wall of the first connector (2) is provided with an external thread (11), and the bottom of the inner wall of the second connector (3) is provided with an internal thread.

9. The anti-backflow fitting of claim 1, wherein: the corner of the outer wall of the backflow preventing main body (1) is of an arc-shaped structure.