Flushing type drainage tube

Abstract

The utility model relates to a flushing type drainage tube which comprises a drainage tube body and a flushing tube, the front end of the flushing tube penetrates into the drainage tube body and extends to the drainage end of the drainage tube body, the front end of the flushing tube is provided with a one-way valve assembly, the one-way valve assembly comprises two elastic blocking pieces which are bent forwards, and the end portions of the two elastic blocking pieces are attached. When a drainage position is flushed or liquid medicine is injected, the liquid medicine or flushing liquid enters the position of the front end of the drainage tube body through the flushing tube, one part of the liquid medicine or the flushing liquid enters the drainage position to be flushed, and the other part of the liquid medicine or the flushing liquid directly flows out of the drainage tube body backwards. The drainage position and the interior of the drainage tube body are flushed, liquid in the drainage tube body cannot enter the drainage position in the flushing process, secondary pollution to the drainage position cannot be caused, and the one-way valve assembly prevents liquid backflow in the flushing process and meanwhile prevents drainage liquid and the like from entering the flushing tube.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage tubes, in particular to a flushing drainage tube. Background Art

[0002] Drainage tubes are widely used clinically and are usually used to drain drainage fluids such as pus at the wound. The drainage end of the drainage tube is inserted into the drainage site and usually has several side holes. The other end is used for the outflow of the drained liquid and is also responsible for the injection of the flushing liquid.

[0003] The drainage tube not only drains but also is responsible for flushing. The drainage outlet and flushing are through the same outlet. When flushing, the medicine solution or flushing liquid is injected into the drainage position through the drainage tube and then flows out of the drainage tube again. Therefore, the dirt in the drainage tube will be washed back to the drainage position again, thus aggravating the infection.

[0004] The invention patent CN107174681A discloses a drainage tube which has both a flushing cavity and a drainage cavity. The drainage tube can be used to continuously flush and drain the pathological cavity. However, the structure of the drainage tube in this invention determines that it has a larger thickness and is not easy to be inserted into a smaller drainage position. At the same time, the drainage liquid is also easy to flow out through the flushing cavity, and a large number of bacteria will breed in the flushing cavity. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a flushing drainage tube.

[0006] The utility model is realized by the following technical solutions. A flushing drainage tube is provided, which includes a drainage tube body and also includes a flushing tube. The front end of the flushing tube penetrates into the drainage tube body and extends to the drainage end of the drainage tube body. A one-way valve assembly is installed at the front end of the flushing tube.

[0007] In this solution, the front end of the drainage tube body is inserted into the drainage position. When it is necessary to flush or inject medicine solution into the drainage position, the medicine solution or flushing liquid enters the position at the front end of the drainage tube body through the flushing tube. A part of it enters the drainage position for flushing, and the other part directly flows backward out of the drainage tube body, so as to flush the drainage position and the inside of the drainage tube body. During this flushing process, the liquid in the drainage tube body will not enter the drainage position, thus not causing secondary pollution to the drainage position. The one-way valve assembly prevents the liquid from flowing back during flushing and also prevents the drainage liquid and the like from entering the flushing tube.

[0008] As an optimization, the one-way valve assembly includes two elastic blocking pieces that bend forward and whose ends are in contact. The two elastic blocking pieces are respectively fixed on both sides of the inner wall of the flushing tube. The two elastic blocking pieces in the one-way valve assembly are closed under the action of elastic force. When flushing, the medicine solution or flushing liquid will flush open the two elastic blocking pieces and then pass through.

[0009] As an optimization, the thickness of the elastic plug gradually decreases from the rear to the front. In this solution, the thickness of the elastic plug gradually decreases from the rear to the front, so that the elastic force gradually decreases, facilitating the opening of the end joint by the water flow.

[0010] As an optimization, the inner hole at the front end of the flushing tube is a rectangular hole, and two elastic plugs are respectively fixed on both sides of the inner wall of the rectangular hole. In this solution, the rectangular hole is blocked by two elastic plugs.

[0011] As an optimization, a protrusion is provided on the drainage tube body, and the flushing tube is sealed through the protrusion. The protrusion in this solution increases the thickness of the drainage tube body at this place, thereby improving the sealing effect at the place where the flushing tube passes through.

[0012] As an optimization, a cap is threadedly connected to the rear end of the flushing tube. The cap in this solution is used to close the rear end of the flushing tube.

[0013] As an optimization, the outer diameter of the flushing tube is 0.3 - 0.6 times the inner diameter of the drainage tube body. Thus, while achieving effective flushing, the influence on the flow of the drainage fluid inside the drainage tube body is reduced, facilitating the normal outflow of the drainage fluid.

[0014] The beneficial effects of the present utility model are as follows: For a flushing type drainage tube of the present utility model, the front end of the drainage tube body is inserted into the drainage position. When it is necessary to flush or inject medicine into the drainage position, the medicine or flushing fluid enters the position at the front end of the drainage tube body through the flushing tube. A part of it enters the drainage position for flushing, and the other part directly flows backward out of the drainage tube body, thereby flushing the drainage position and the inside of the drainage tube body. During this flushing process, the liquid inside the drainage tube body will not enter the drainage position, thus not causing secondary pollution of the drainage position. The one-way valve assembly prevents the liquid from flowing backward during flushing and also prevents the drainage fluid, etc. from entering the flushing tube. Description of the Drawings

[0015] Figure 1 It is a cross-sectional view inside the present utility model;

[0016] Figure 2 It is a partial enlarged view of the end of the flushing tube of the present utility model;

[0017] As shown in the figure:

[0018] 1. Drainage tube body, 2. Flushing tube, 3. One-way valve assembly, 31. Elastic plug, 4. Drainage port, 5. Pipe joint, 6. Protrusion, 7. Cap. Detailed Embodiment

[0019] To clearly illustrate the technical features of this solution, the following elaborates on this solution through specific embodiments.

[0020] Such as Figures 1 - 2As shown in the figure, a flushing type drainage tube of the utility model comprises a drainage tube body 1 and a flushing tube 2. Both the drainage tube body 1 and the flushing tube are flexible hoses with certain elasticity.

[0021] The front end of the drainage tube body 1 is a drainage end, and the front end face of the drainage end is a smooth spherical structure, which is convenient for inserting into the drainage position. A certain number of drainage openings 4 are opened on both the front end face and the side face of the drainage end. After the drainage end is inserted into the drainage position, the drainage fluid enters the interior of the drainage tube body from the drainage openings 4. The drainage openings 4 are arranged circumferentially and axially on the side face of the drainage end.

[0022] The rear end of the drainage tube body 1 is equipped with a pipe joint for connecting a drainage ball, a negative pressure syringe or a drainage pump. Both the drainage fluid and the flushing fluid flow out from the position of the pipe joint 5.

[0023] The front end of the flushing tube 2 penetrates into the drainage tube body 1 and extends to the drainage end of the drainage tube body 1. Therefore, the front end of the flushing tube 2 is located inside the drainage tube body 1, and the rear end is located outside the drainage tube body 1.

[0024] A protrusion 6 is provided on the drainage tube body 1, and the flushing tube 2 seals and passes through the protrusion 6. The protrusion increases the thickness of the drainage tube body at this place, thereby improving the sealing effect at the place where the flushing tube passes through. The protrusion is located on the side face of the drainage tube body 1 near one end of the pipe joint 5.

[0025] The rear end of the flushing tube 2 is threadedly connected with a cap 7. When the flushing tube 2 is not in use, the rear end of the flushing tube 2 is blocked by the cap 7, and the thickness of the rear end of the flushing tube 2 increases, thereby increasing its rigidity. Therefore, the connection with the cap can be realized through the thread.

[0026] The outer diameter of the flushing tube 2 is 0.3 - 0.6 times the inner diameter of the drainage tube body 1. If the outer diameter of the flushing tube 2 is too large, it will affect the normal outflow of the drainage fluid in the drainage tube body 1. If the outer diameter of the flushing tube 2 is too small, it will affect the inflow rate of the medicinal liquid or the flushing fluid.

[0027] A one-way valve assembly 3 is installed at the front end of the flushing tube 2. As Figure 2 shown, the one-way valve assembly 3 includes two elastic blocking pieces 31 that bend forward and whose ends are in contact. The two elastic blocking pieces 31 are respectively fixed on both sides of the inner wall of the flushing tube 2. In this embodiment, the inner hole at the front end of the flushing tube 2 is a rectangular hole, and the two elastic blocking pieces 31 are respectively fixed on both sides of the inner wall of the rectangular hole. The inner hole at the 1 - centimeter position at the front end of the flushing tube 2 is a rectangular hole, and the inner holes at the remaining positions are round holes.

[0028] Both sides of the elastic blocking piece 31 are in contact with the inner wall of the rectangular hole to achieve sealing. The thickness of the elastic blocking piece 31 gradually decreases from the rear to the front.

[0029] The using method of the utility model:

[0030] The front end of the drainage tube body 1 is inserted into the drainage position, and the drainage fluid flows outwards through the tube joint 5 through the drainage port. When it is necessary to flush or inject medicine into the drainage position, the cap 7 of the flushing tube 2 is opened, and medicine or flushing fluid is injected inward from here. The medicine or flushing fluid enters the front end position of the drainage tube body 1 through the flushing tube 2. Part of it enters the drainage position for flushing, and the other part directly flows backward out of the drainage tube body 1, so as to flush the drainage position and the inside of the drainage tube body 1. During this flushing process, the liquid in the drainage tube body 1 will not enter the drainage position, thus preventing secondary pollution of the drainage position.

[0031] The two elastic blocking pieces 31 in the one-way valve assembly 3 are closed under the action of elastic force, so as to block the end of the flushing tube 2, prevent the liquid from flowing back during flushing, and also prevent the drainage fluid and the like from entering. When flushing, the medicine or flushing fluid flushes open the two elastic blocking pieces 31 and then passes through.

[0032] Of course, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted the prior art, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solutions of the present utility model and are not a limitation to the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model do not depart from the purpose of the present utility model and should also belong to the protection scope of the claims of the present utility model.

Claims

1. A flushing drainage tube, comprising a drainage tube body (1), characterized in that: It also comprises a flushing tube (2), the front end of which penetrates into the drainage tube body (1) and extends to the drainage end of the drainage tube body (1), and a one-way valve assembly (3) is installed at the front end of the flushing tube (2).

2. The flushing drainage tube according to claim 1, characterized in that: The one-way valve assembly (3) comprises two elastic plugs (31) bent forward and with their ends fitted together, and the two elastic plugs (31) are respectively fixed to two sides of the inner wall of the flushing pipe (2).

3. The flushing drainage tube according to claim 2, characterized in that: The thickness of the elastic blocking piece (31) gradually decreases from the back to the front.

4. The flushing drainage tube according to claim 2, characterized in that: The inner hole at the front end of the flushing pipe (2) is a rectangular hole, and two elastic plugging pieces (31) are respectively fixed to two sides of the inner wall of the rectangular hole.

5. The flushing drainage tube according to claim 1, characterized in that: The drainage tube body (1) is provided with a protrusion (6), and the flushing tube (2) sealably passes through the protrusion (6).

6. The flushing drainage tube according to claim 1, characterized in that: The rear end of the flushing pipe (2) is threadedly connected with a cap (7).

7. The flushing drainage tube according to claim 1, characterized in that: The outer diameter of the flushing tube (2) is 0.3-0.6 times the inner diameter of the drainage tube body (1).

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