Chest drainage tube

Abstract

The thoracic cavity drainage tube comprises a tube body and a puncture needle assembly inserted from the top of the tube body, a guide wire capable of pulling the tube body to bend is arranged in the tube body, and the guide wire can penetrate out of the top of the tube body; a flow guide hole is formed in the lower position of the tube body, the top of the tube body is connected with a one-way valve and a Luer cap through a flexible connecting piece, one end of the one-way valve can be installed above the tube body, and the other end of the one-way valve can be connected to the Luer cap or a drainage bottle. By arranging the one-way valve matched with the drainage tube, the situation that effusion flows back in the drainage process can be eradicated, on the premise that the treatment effect is guaranteed, different from a traditional drainage tube, the structure capable of guaranteeing the leakproofness is achieved, and on the premise that the use requirement is met, the production cost is greatly reduced; meanwhile, the designed drainage bottle can be used for detecting blockage and detecting the change of the condition of a patient.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a chest drainage tube. Background Art

[0002] At present, chest drainage tubes commonly used in clinical practice have some defects. For example, traditional drainage tubes are prone to blockage, resulting in poor drainage; due to the inevitable movement of patients, effusion backflow occurs during the drainage process, and the patient's comfort is poor. These problems not only affect the treatment effect, but also increase the patient's pain and treatment risks; in addition, in terms of structure, in order to ensure airtightness, the drainage tube processing requirements are high, and in many cases, one-piece mold opening is required, the cost remains high, and the cost is naturally expensive.

[0003] For example, in the existing patent technology with the patent publication number CN104127925A and the patent name of a pleural effusion drainage device, it is specifically disclosed that "it includes a puncture sleeve, a puncture needle, a drainage tube group, a first connecting part and a drainage bottle. The drainage tube group includes a first drainage tube and a second drainage tube. A first body block is provided at one end of the puncture sleeve; the puncture needle is provided with a second block and a puncture handle. The second block on the puncture needle cooperates with the first block on the puncture sleeve, so that the puncture sleeve can be fixed on the puncture needle, and the puncture handle is convenient for operation during surgery. The accumulated fluid and gas in the human chest cavity are discharged from the body through the first connecting part, and then the accumulated fluid and gas discharged from the body are collected in the drainage bottle through the drainage tube, which is convenient for testing, measurement and processing. After puncture, the puncture sleeve is easy to fix, the operation is simple, the trauma is small, the flow rate can be adjusted, the patient's pain is relieved, and the safety performance is good." The above-mentioned technology does not have a corresponding valve body on the drainage tube. If blockage occurs, it will cause problems such as poor drainage.

[0004] Based on this, the present invention proposes a chest drainage tube to solve the above-mentioned shortcomings. Summary of the invention

[0005] The technical problem to be solved by the present invention is: how to solve the problem of reflux of effusion in chest drainage tube.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A chest drainage tube comprises a tube body and a puncture needle assembly inserted from the top of the tube body, wherein a guide wire capable of pulling the tube body to bend is arranged inside the tube body, wherein the guide wire can pass through the top of the tube body;

[0008] A flow guide hole is opened at the lower position of the tube body, and a one-way valve and a Luer cover are connected to the top of the tube body through a soft connector. One end of the one-way valve can be installed above the tube body, and the other end can be connected to the Luer cover or the drainage bottle.

[0009] The present application sets a one-way valve designed in conjunction with the drainage tube to prevent the entry of outside air during the drainage process, which may cause the pneumothorax symptoms to worsen. Under the premise of ensuring the treatment effect, the structure is different from the traditional drainage tube in that it ensures the airtightness. While meeting the use requirements, the production cost is greatly reduced. At the same time, the designed drainage bottle can perform blockage detection and detect changes in the patient's condition.

[0010] As a further solution of the present invention: the outer needle is inserted from the top of the tube body, and the inner needle is inserted from the top of the outer needle and passes through the bottom of the outer needle and the tube body.

[0011] As a further solution of the present invention: the tip of the inner needle is a triangular thorn, and the length of the inner needle after installation is 4mm-8mm longer than the bottom opening of the tube body.

[0012] As a further solution of the present invention: the tube body is a soft tube, the bottom tube opening of which is a conical closing end, and the end of the outer needle is supported at the end with a wider diameter of the conical closing end.

[0013] As a further solution of the present invention: mounting holes are provided at both ends and the middle of the flexible connector. The mounting holes at both ends are respectively used to install the Luer cover and the rubber-coated part at the top of the tube body, and the mounting hole in the middle is used to install the one-way valve.

[0014] As a further solution of the present invention: the one-way valve includes a valve body 1 and a valve body 2, wherein the valve body 1 can be connected to the rubber-coated component and locked by a Luer sleeve outside the valve body 1, and the valve body 2 can be locked with the Luer cover.

[0015] As a further solution of the present invention: a one-way valve rubber pad is provided on the outer side of the valve body 2 and can be sealed when connected with the Luer cover.

[0016] As a further solution of the present invention: the top of the drainage bottle is connected to the one-way valve through a hose, and then connected to the top of the tube body through the one-way valve, and an exhaust port is opened at an upper position of the drainage bottle.

[0017] As a further solution of the present invention: a display screen is arranged on the drainage bottle, an indicator light is also installed on the display screen, and a fluid accumulation detector is installed below the display screen.

[0018] As a further solution of the present invention: the guide wire enters from the top of the tube body, passes through an outlet opened at a lower position of the tube body, and then is wound around and connected to the bottom end of the tube body.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] First, the present application can prevent the occurrence of effusion backflow during the drainage process by setting a one-way valve designed in conjunction with the drainage tube. Under the premise of ensuring the treatment effect, the structure that ensures airtightness is different from the traditional drainage tube. Under the premise of meeting the use requirements, the production cost is greatly reduced. At the same time, the designed drainage bottle can perform blockage detection and detect changes in the patient's condition;

[0021] Secondly, the pipe fitting of the present application can be connected to a drainage bottle, on which a thin sheet with an electrode is arranged. When the fluid in the bottle increases, the air is discharged, the thin sheet rises to connect the passage, and the indicator light comes on, indicating normal drainage. When no air is discharged, the thin sheet falls to disconnect the passage, and the indicator light turns off after a period of time, which is used to remind doctors and patients that the drainage tube may be blocked, or there is no more fluid to be discharged. The thin sheet can promptly let the staff know whether there is fluid to be discharged;

[0022] Finally, the drainage bottle of the present application is equipped with a button battery-powered display screen and chip on the wall. The chip is pre-burned with the strength of the electrical signal output by the different concentrations of effusion, which is used to roughly distinguish whether it is leaked fluid or exudate, whether there is bleeding, and then display the status on the display screen for the staff to check in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a chest drainage tube according to an embodiment of the present invention;

[0024] Figure 2 For the embodiment of the present invention Figure 1 Left view of

[0025] Figure 3 This is a schematic diagram of the structure of a flexible connector, a one-way valve and a Luer cover according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the flexible connector, the one-way valve and the Luer cover after being connected to each other in an embodiment of the present invention;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of a flexible connector, a one-way valve and a Luer cover according to an embodiment of the present invention;

[0028] Figure 6 This is a state diagram of the outer needle and the inner needle being taken out of the drainage tube body according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure when a chest drainage tube is connected to a drainage bottle according to an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of the bending directions of the tube body, the one-way valve and the Luer cover according to an embodiment of the present invention;

[0031] Description of reference numerals:

[0032] 1. Tube body; 2. Rubber-coated parts; 4. Guide wire; 5. Outer needle; 6. Inner needle; 7. Diversion hole; 8. Flexible connector; 9. One-way valve; 91. Luer sleeve; 92. Valve body one; 93. Valve body two; 10. Luer cover; 11. Hose; 12. Exhaust port; 13. Indicator light; 14. Display screen; 15. Liquid accumulation detector. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1 , Figure 2 and Figure 7 A chest drainage tube belongs to a closed chest drainage tube, including a tube body 1, a rubber-coated part 2, a guide wire 4, an outer needle 5, an inner needle 6, a diversion hole 7, a soft connector 8, a one-way valve 9, a Luer cover 10, a hose 11 and a drainage bottle.

[0035] Reference Figure 1 and Figure 2 The tube body 1 is made of a hose, and the entire tube body is made of polyurethane material. The bottom of the tube is a conical end. The front end of the tube body 1 (i.e. Figure 1 There is a guide hole 7 at the bottom end of the middle tube body, which can increase the drainage effect and prevent the backflow of accumulated fluid. The present application has five groups of guide holes 7. The specific number of guide holes 7 depends on the actual situation. The present application does not limit it and only gives one implementation method.

[0036] Reference Figure 1 and Figure 2 The rubber-coated part 2 is used to fix and connect other components. The rubber-coated part 2 of the present application is installed on the top of the pipe fitting 1, and is used to fix and connect the outer needle 5 or the one-way valve 9. When the outer needle 5 is installed inside the pipe fitting 1, the outer needle 5 can be fixed to the rubber-coated part 2; when the one-way valve 9 is installed on the top of the pipe fitting 1, the outer needle 5 has been taken out from the inside of the pipe fitting 1, and then the rubber-coated part 2 can be fixed to the one-way valve.

[0037] Reference Figure 1 , Figure 2 and Figure 8The guide wire 4 enters from the top of the tube body 1 and passes through the outlet opened at the lower position of the tube body 1. The outlet here should be located above the guide hole 7, and then wrapped around and connected to the bottom end of the tube body 1; when in use, after the drainage tube body 1 is punctured to the target position, the inner and outer needles are taken out, and the drainage tube body 1 is bent by stretching the guide wire 4. At this time, the bent part is the part where the guide hole 7 is opened, so as to continue the next step of drainage work.

[0038] Reference Figure 6 and Figure 8 , straighten the drainage tube body 1 and then insert the outer needle 5. The outer needle 5 is inserted from the top of the tube body 1. The bottom tube opening of the tube body 1 is a conical closing, and the end of the outer needle is supported at a wide section of the closing. It should be noted that the outer needle 5 does not pass through the bottom tube opening of the tube body 1.

[0039] Reference Figure 6 and Figure 8 The inner needle 6 is inserted into the outer needle 5 after the outer needle 5 is inserted into the drainage tube body 1. Specifically, the inner needle 6 is inserted from the top of the outer needle 5 and passes through the bottom of the outer needle 5 and the tube body 1; the tip of the inner needle 6 is a triangular thorn, and the length of the inner needle 6 after installation is 5 mm longer than the bottom tube opening of the tube body 1.

[0040] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 A one-way valve 9 and a luer cover 10 are connected to the top of the tube body 1 through a soft connector 8. Mounting holes are provided at both ends and the middle of the soft connector 8. The mounting holes at both ends are used to mount the luer cover 10 and the rubber-wrapped component 2 at the top of the tube body 1, respectively. The mounting hole in the middle is used to mount the one-way valve 9. One end of the one-way valve 9 can be mounted on the top of the tube body 1, and the other end can be connected to the luer cover 10 or the drainage bottle.

[0041] It should be noted that the soft connector 8 can be bent. When the one-way valve 9 is connected to the rubber-coated component 2, the soft connector 8 on one side of the one-way valve 9 is in a bent state (such as Figure 7 As shown), when the luer cover 10 is connected to the one-way valve 9, the soft connector 8 on one side of the luer cover 10 is in a bent state (as shown in FIG. Figure 4 shown).

[0042] Reference Figure 3 , Figure 4 and Figure 5The inside of the one-way valve is different from the one-way valve installed with soft rubber. It is installed with a circular one-way membrane to achieve exhaust at a pressure of 300-400pa when the lung is dilated. The one-way valve adopts a Luer one-way valve, which is made of PC shell and polyurethane membrane, and has a breathable function; the opening pressure of the one-way valve 9 is 0.3-0.4kpa. The valve is opened or closed by different pressures to ensure the forward flow of liquid and reverse closure, so as to prevent the occurrence of liquid reflux and reduce the risk of pollution;

[0043] The one-way valve 9 specifically includes a valve body 1 92 and a valve body 2 93, wherein the valve body 1 92 can be connected to the rubber-coated component 2 and locked by the Luer sleeve 91 outside the valve body 1 92, and the valve body 2 93 can be locked with the Luer cover 10; a one-way valve rubber pad is provided on the outside of the valve body 2 93 for sealing when connected to the Luer cover 10, and the one-way valve rubber pad is installed in the cavity to prevent the accumulated liquid from flowing back.

[0044] It should be noted that the Luer cover 10 is screwed onto the valve body 1 when drainage is not required, thereby closing the passage; the Luer sleeve 91 is used to connect the rubber-coated part 2, and the connection is stable.

[0045] Reference Figure 3 The top of the drainage bottle is connected to the one-way valve 9 through a hose 11, and then connected to the top of the tube body 1 through the one-way valve 9. An exhaust port 12 is opened at the upper position of the drainage bottle; further, a display screen 14 is provided on the drainage bottle, an indicator light 13 is also installed on the display screen 14, and a fluid accumulation detector 15 is installed below the display screen 14.

[0046] It should be noted that the drainage bottle is connected to the top of the tube body 1, which is used for fluid storage, flow monitoring, and simple analysis of the composition of the accumulated fluid; a thin sheet with an electrode is provided at the exhaust port 12, and when the amount of accumulated fluid in the bottle increases, the air is discharged, the thin sheet rises to connect the passage, and the indicator light comes on, indicating normal drainage; when no air is discharged, the thin sheet descends to disconnect the passage, and the indicator light turns off after a period of time; it is used to remind doctors and patients that the drainage tube may be blocked, or that no more accumulated fluid is discharged; a button battery-powered display screen 14 and a chip are installed on the bottle wall; the chip is pre-burned with the strength of the electrical signal output by the accumulated fluid of different concentrations, which is used to roughly distinguish whether it is leaked fluid or exudate, whether there is bleeding, and then the status is displayed on the display screen.

[0047] The specific operating principles of this application are as follows:

[0048] First, insert the outer needle 5 into the tube body 1, and then insert the inner needle 6 into the outer needle 5. Figure 1 The status shown is OK;

[0049] Before use, the patient needs to undergo a CT scan to determine the position, depth and angle of the drainage tube 1. After the puncture position is determined, the drainage tube 1 is punctured to the target position, and then the inner needle 6 and the outer needle 5 inside the tube 1 are removed. Then, the guide wire 4 is pulled to bend the end of the tube 1 near the diversion hole 7. The bending direction is as follows: Figure 8 Then screw the valve body 1 92 in the one-way valve 9 onto the rubber-coated part 2 at the top of the tube body 1 and fix it. If a drainage bottle is needed, connect the drainage bottle to the valve body 2 93 of the one-way valve 9 through the hose 11. Figure 7 In the state shown, the accumulated fluid and gas can enter the tube body 1 from the guide hole 7, and enter the drainage bottle from the tube body 1 and the hose for storage; when the accumulated fluid in the drainage bottle increases, the air is discharged, the thin sheet in the exhaust port 12 rises to connect the passage, and the indicator light is on, indicating normal drainage. When no air is discharged, the thin sheet falls to disconnect the passage, and the indicator light is off after a period of time; it is used to remind doctors and patients that the drainage tube body 1 may be blocked, or there is no more accumulated fluid to be discharged;

[0050] When it is necessary to stop the drainage, the hose 2 is removed, and then the Luer cover 10 is screwed onto the valve body 2 93 to stop the drainage.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chest drainage tube, characterized in that: The invention comprises a tube body (1) and a puncture needle assembly inserted from the top of the tube body (1), wherein a guide wire (4) capable of pulling the tube body (1) to bend is arranged inside the tube body (1), wherein the guide wire (4) can pass through the top of the tube body (1); A flow guide hole (7) is provided at a lower position of the tube body (1), and a one-way valve (9) and a luer cover (10) are connected to the top of the tube body (1) via a soft connector (8); one end of the one-way valve (9) can be installed above the tube body (1), and the other end can be connected to the luer cover (10) or a drainage bottle.

2. A chest drainage tube according to claim 1, characterized in that: The puncture needle assembly comprises an outer needle (5) and an inner needle (6), wherein the outer needle (5) is inserted from the top of the tube body (1), and the inner needle (6) is inserted from the top of the outer needle (5) and passes through the bottom of the outer needle (5) and the tube body (1).

3. A chest drainage tube according to claim 2, characterized in that: The tip of the inner needle (6) is a triangular thorn, and the length of the inner needle (6) after installation is 4 mm to 8 mm longer than the bottom tube opening of the tube body (1).

4. A chest drainage tube according to claim 2, characterized in that: The tube body (1) is a soft tube, the bottom tube opening of which is a conical closing end, and the end of the outer needle (5) is supported at the end with a wider diameter of the conical closing end.

5. A chest drainage tube according to claim 1, characterized in that: The flexible connector (8) is provided with mounting holes at both ends and in the middle. The mounting holes at both ends are used to install the Luer cover (10) and the rubber-coated component (2) located at the top of the tube body (1), respectively, and the mounting hole in the middle is used to install the one-way valve (9).

6. A chest drainage tube according to claim 5, characterized in that: The one-way valve (9) comprises a valve body 1 (92) and a valve body 2 (93), wherein the valve body 1 (92) can be connected to the rubber-coated component (2) and locked by a Luer sleeve (91) outside the valve body 1 (92), and the valve body 2 (93) can be locked with the Luer cover (10).

7. A chest drainage tube according to claim 6, characterized in that: A one-way valve rubber pad is provided on the outer side of the second valve body (93) for sealing when connected with the Luer cover (10).

8. A chest drainage tube according to claim 1, characterized in that: The top of the drainage bottle is connected to a one-way valve (9) via a hose (11), and then connected to the top of the tube body (1) via the one-way valve (9). An exhaust port (12) is provided at an upper position of the drainage bottle.

9. A chest drainage tube according to claim 8, characterized in that: The drainage bottle is provided with a display screen (14), an indicator light (13) is also installed on the display screen (14), and a fluid accumulation detector (15) is installed below the display screen (14).

10. A chest drainage tube according to claim 1, characterized in that: The guide wire (4) enters from the top of the tube body (1), passes through an outlet opened at a lower position of the tube body (1), and then winds around once to connect to the bottom end of the tube body (1).

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