A chest drainage tube

Abstract

The utility model discloses the technical field of drainage medical instrument, especially, relates to a chest drainage tube, including connecting piece, and through its connection's outer sleeve and inner sleeve, and through the extension pipe of connecting cover connection in inner sleeve top, be equipped with cooperation at least one boss and at least one buckle connecting portion with connecting cover bottom portion respectively in connecting piece's top, the boss and buckle connecting portion cooperation clasp to open or lock the connecting piece and connecting cover, and still be equipped with connecting seat in the connecting piece in the boss bottom, the connecting seat is equipped with the limit hole, inlaying wave pearl screw in the limit hole, the outer sleeve and inner sleeve, extension pipe can form liquid injection flushing, drainage channel through the assembly of connecting piece and connecting cover, the chest drainage tube of the utility model, the connection and disassembly between outer sleeve and inner sleeve, simple and convenient operation can effectively prevent leakage, and flushing / administration is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of drainage medical device technology, and in particular to a chest drainage tube. Background Technology

[0002] The statements in this section are merely to provide background information related to the disclosure of this utility model and do not necessarily constitute prior art.

[0003] Surgical drainage utilizes the principles of siphon or negative pressure suction, placing a tube in the surgical area or body cavity and exiting through a skin incision to guide pus, exudate, blood, tissue fluid, and other fluids accumulated in the body tissues or cavities out of the body, preventing fluid retention and postoperative infection. A single-tube chest drainage is routinely placed during surgery; however, because the drainage fluid is turbid, viscous, or contains residue or flocculent material, it is prone to blockage and lacks irrigation function. Therefore, a double-tube drainage system is a better choice to avoid these problems.

[0004] However, the existing double-tube chest drainage tubes have many shortcomings, mainly in the following aspects: ① The connection between the inner and outer tubes is complicated and inconvenient; ② The connection points are prone to leakage. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a chest drainage tube that is simple and convenient to connect and disassemble between the outer sleeve and the inner sleeve, can effectively prevent leakage, and makes rinsing / administration easy and convenient.

[0006] The technical solution adopted in this utility model is as follows: a chest drainage tube, including a connector, an outer sleeve and an inner sleeve connected thereto, and an extension tube connected to the inner sleeve via a connecting cap. At least one boss and at least one snap-fit ​​connection part are respectively provided on the top of the connector and at the bottom of the connecting cap. The boss and the snap-fit ​​connection part are engaged to open or lock the connector and the connecting cap. Furthermore, the connector is provided with a connecting seat at the bottom of the boss. The connecting seat is provided with a limiting hole, and a ball screw is embedded in the limiting hole. After the outer sleeve, inner sleeve, and extension tube are assembled through the connector and the connecting cap, a fluid injection and drainage channel can be formed.

[0007] In this technical solution, the snap-fit ​​connection side is provided with a retaining edge.

[0008] In this technical solution, the connecting cover is provided with rotation opening and closing direction indicator text and / or indicator arrows on the circumferential side.

[0009] In this technical solution, the connecting cover is provided with a groove structure, and an I-shaped sealing ring is placed in the groove structure.

[0010] In this technical solution, the inner wall of the outer sleeve is provided with at least one flushing hole, and the connection between the connector and the outer sleeve is provided with a flushing transition cavity, which is connected to at least one flushing pipe, and the flushing pipe is connected to a cap.

[0011] In this technical solution, the head end of the outer sleeve has an open structure with rounded corners.

[0012] In this technical solution, the number of flushing holes is 2-4.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The connection and disassembly between the outer sleeve and the inner sleeve are simple and convenient to operate; 2. A thin-walled I-shaped sealing ring is installed in the groove of the connecting cover. This structural design can effectively prevent leakage. 3. A flushing hole is provided on the outer tube wall, and a corresponding flushing transition cavity is provided on the connector, making flushing / administration easy and convenient; 4. The outer tube end structure is both safe and facilitates thorough flushing and drainage.

[0014] The thoracic drainage tube of this invention features a simple and convenient connection and disassembly between the outer and inner sheaths, effectively preventing leakage and facilitating easy and convenient irrigation / administration. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of one embodiment of a chest drainage tube; Figure 2 A partial cross-sectional view of one embodiment of a chest drainage tube; Figure 3 This is a structural diagram showing the connection between the connecting cover 50 and the inner sleeve 20. Figure 4 A three-dimensional structural diagram of another embodiment of a chest drainage tube; Figure 5 A three-dimensional structural diagram of an embodiment of a chest drainage tube having an irrigation channel and a drug delivery channel; Figure 6 This is a partial sectional view of connector 40; Figure 7 A cross-sectional view of an embodiment of a chest drainage tube having an irrigation channel and a drug delivery channel; Figure 8 A structural diagram of an embodiment of a chest drainage tube with a tip; Wherein: 10-outer sleeve, 11-flushing hole, 12-head end, 13-drainage wall hole; 20-inner sleeve, 30-extension tube, 31-connector; 40-connector, 41-boss, 42-connecting seat, 43-limiting hole, 44-ball screw, 45-cap, 46-flushing transition chamber, 47-flushing tube; 50-connecting cover, 51-snap-fit ​​connection, 52-edge, 53-rotation opening and closing direction indicator text and / or indicator arrow, 54-groove structure; 60-I-shaped sealing ring. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," and "right," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the combination or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, in the description of the embodiments of this utility model, the positional relationships of devices such as "upper," "lower," "front," "rear," "left," and "right" in all figures are based on... Figure 1 As the standard.

[0018] like Figure 1 As shown, the chest drainage tube includes a connector 40, an outer sheath 10 and an inner sheath 20 connected thereto, and an extension tube 30 connected to the inner sheath 20 via a connecting cap 50. At least one boss 41 and at least one snap-fit ​​connection part 51 are respectively provided on the top of the connector 40 and on the bottom of the connecting cap 50. The boss 41 and the snap-fit ​​connection part 51 engage to open or lock the connector 40 and the connecting cap 50. Furthermore, the connector 40 also has a connecting seat 42 located at the bottom of the boss 41. The connecting seat 42 has a limiting hole 43, in which a ball screw 44 is embedded. See details... Figure 6After the outer sleeve 10, inner sleeve 20, and extension tube 30 are assembled through the connector 40 and connecting cap 50, they form a channel for fluid injection, flushing, and drainage. In practice, first insert the snap-fit ​​connection part 51 on the connecting cap 50 into the connector 40, avoiding the boss 41. Then, gently press the ball screw 44, and rotate it in the "close" direction until the boss 41 aligns with the side of the snap-fit ​​connection part 51, thus completing the connection. The loosened ball screw 44 can then be used for limiting its movement, directly abutting against the side of the snap-fit ​​connection part 51. Gently press the ball screw 44, and then rotate the connecting cap 50 in the "open" direction to loosen the connection. The entire operation is simple, convenient, and easy. During use, the assembly and disassembly of the chest drainage tube are simple, convenient, and efficient. The boss 41, snap-fit ​​connection part 51, and ball screw 44 can be one or more. In the specific implementation process, the ball screw 44 embedded in the limiting hole 43 can be a POM press-fit ball plunger, which can be a finished part or a standard part, making it convenient for installation and subsequent maintenance.

[0019] The working principle of this utility model is as follows: A chest drainage tube is usually placed in the surgical area or body cavity and exits through a skin incision. It drains accumulated pus, exudate, tissue fluid and other fluids to the outside of the body through gravity, pressure and negative pressure suction, preventing fluid accumulation and postoperative infection.

[0020] Furthermore, it should be noted that the tip of the extension tube 30 includes a connector 31, which can be connected to a drainage bag, a negative pressure bulb, or other negative pressure source to form a complete flushing and drainage system. During the drainage process, fluid is precisely delivered to the surgical area or body cavity through the fluid delivery channel / fluid flushing cavity to soften and flush away necrotic tissue, blood clots, or bacteria, reducing infection and resolving blockage of the chest drainage tube.

[0021] In at least one embodiment, such as Figure 5 As shown, the buckle connection 51 has a retaining edge 52 on its side. The retaining edge 52 is used to cooperate with the side of the buckle connection 51 to limit its position and help to lock and fix it.

[0022] In at least one embodiment, such as Figure 5 As shown, the connecting cover 50 is provided with rotation opening and closing direction indicator text and / or indicator arrows on the circumferential direction to clearly indicate the opening and closing direction of the connecting cover 50.

[0023] In at least one embodiment, such as Figure 3As shown, the connecting cover 50 is provided with a groove structure 54, and an I-shaped sealing ring 60 is placed in the groove structure 54. When the connecting cover is inserted into the connector, the I-shaped sealing ring 60 and the connector 40 are in an interference fit state. During operation, because the contact surface between the I-shaped sealing ring 60 and the groove structure 54 is large, the I-shaped sealing ring will not shift or flip. Therefore, this structural design can effectively prevent leakage.

[0024] In at least one embodiment, such as Figure 4 and Figure 5 As shown, the inner wall of the outer sleeve 10 is provided with at least one flushing hole 11, and the connection between the connector 40 and the outer sleeve 10 is provided with a flushing transition cavity 46. Figure 2 As can be seen from the diagram, the flushing transition chamber 46 is connected to at least one flushing tube 47, and the flushing tube 47 is connected to the cap 45. In the specific implementation process, the outer tube 10 is inserted into a certain position in the flushing transition chamber 46, and after being sealed and assembled by the bonding process, a flushing / injection channel is formed. The connector 40 includes the flushing tube 47. When administering medication through the flushing tube 47, the medication can be temporarily collected at the flushing transition chamber 46, and then evenly and easily injected into the flushing hole 11 on the wall of the outer tube 10, reaching the head of the outer tube 10 and directly reaching the affected area, reducing the chance of infection at the affected area and shortening the course of the disease.

[0025] In at least one embodiment, such as Figure 8 As shown, the head end 12 of the outer tube 10 has a rounded open structure, which can avoid scratching human tissue and allow for thorough rinsing and drainage.

[0026] In at least one embodiment, such as Figure 7 As shown, the number of flushing holes 11 is 2-4, which can achieve a sufficient flushing effect.

[0027] In at least one embodiment, such as Figure 8 , Figure 3 , Figure 4 As shown, at least one drainage wall hole 13 is provided at the head end of the outer sleeve 10 and the inner sleeve 20 respectively. The drainage wall hole on the outer sleeve 10 and the open head end 12 can fully drain the accumulated liquid, which then enters the inner sleeve 20 through the drainage wall hole on the inner sleeve. Under the action of negative pressure or gravity, the side wall drainage is further enhanced, improving the drainage effect. Finally, it is drained to the outside of the body through the extension tube 30.

[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A chest drainage tube, comprising a connector (40), an outer sheath (10) and an inner sheath (20) connected thereto, and an extension tube (30) connected to the inner sheath (20) via a connecting cap (50), characterized in that: At least one boss (41) and at least one snap-fit ​​connection part (51) are provided on the top of the connector (40) and at the bottom of the connector (50), respectively. The boss (41) and the snap-fit ​​connection part (51) are engaged to open or lock the connector (40) and the connector (50). Furthermore, the connector (40) is provided with a connecting seat (42) at the bottom of the boss (41), the connecting seat (42) is provided with a limiting hole (43), and a ball screw (44) is embedded in the limiting hole (43).

2. The chest drainage tube according to claim 1, characterized in that: The buckle connection (51) has a retaining edge (52) on its side.

3. The chest drainage tube according to claim 1, characterized in that: The connecting cover (50) is provided with rotation opening and closing direction indicator text and / or indicator arrows (53) around the periphery.

4. The chest drainage tube according to claim 3, characterized in that: The connecting cover (50) is provided with a groove structure (54), and an I-shaped sealing ring (60) is placed in the groove structure (54).

5. The chest drainage tube according to claim 4, characterized in that: The inner wall of the outer tube (10) is provided with at least one flushing hole (11), and the connection between the connector (40) and the outer tube (10) is provided with a flushing transition cavity (46). The flushing transition cavity (46) is connected to at least one flushing pipe (47), and the flushing pipe (47) is connected to a cap (45).

6. The chest drainage tube according to claim 5, characterized in that: The head end (12) of the outer tube (10) has a rounded open structure.

7. The chest drainage tube according to claim 5 or 6, characterized in that: The number of flushing holes (11) is 2-4.

8. The chest drainage tube according to claim 6, characterized in that: At least one drainage wall hole (13) is provided at the head end of the outer sleeve (10) and the inner sleeve (20).

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