A multi-angle adjustable anti-bending fixation device for chest tubes after cardiothoracic surgery

Abstract

This invention relates to the field of medical drainage tube technology and discloses a multi-angle adjustable anti-bending fixation device for postoperative chest drainage tubes in cardiothoracic surgery. The device includes a drainage tube; a drainage bottle; a junction mechanism for controlling the bending of the drainage tube; and a positioning mechanism for positioning the drainage tube. The drainage tube comprises an upper tube and a lower tube, with the junction mechanism connecting the upper and lower tubes. This multi-angle adjustable anti-bending fixation device for postoperative chest drainage tubes in cardiothoracic surgery, by setting multiple junction mechanisms on the drainage tube and using a flexible telescopic tube combined with connecting springs to form movable nodes that can be bent in a directional manner, concentrates the bending position of the tube at preset points, avoiding random bending and compression of the tube. The connecting springs provide support and reset limit at the bending points, preventing excessive bending from causing tube blockage, ensuring continuous and normal drainage of pleural effusion and pneumothorax, and reducing the risk of discomfort and postoperative complications caused by poor drainage.

Description

Technical Field

[0001] This invention relates to the field of medical drainage tube technology, specifically a multi-angle adjustable anti-bending fixation device for chest drainage tubes after thoracic surgery. Background Technology

[0002] Postoperative chest tubes are typically required in cardiothoracic surgery to drain pleural effusion and pneumothorax promptly, serving as a crucial medical device for postoperative recovery and disease monitoring. Currently, most traditional chest tubes used clinically are one-piece, round, rigid, flexible tubes, which present numerous drawbacks in practical application.

[0003] First, the tubes have poor resistance to bending. Traditional drainage tubes do not have a special bending protection structure. When patients turn over, change position, or move, the tubes are prone to random bending and compression, which can lead to blockage of the lumen, hindering the normal drainage of accumulated fluid. This not only affects postoperative recovery but may also cause chest tightness and discomfort in patients, and even induce related complications, posing a significant safety hazard. The fixation effect of the tubes is not ideal. Conventional round tubes tend to roll when placed against the skin, which can easily lead to displacement of the inserted tube, increasing patient pain and the risk of tube dislodgement. Clinically, temporary fixation is often achieved by using ordinary tape, but postoperative sweating and activity significantly reduce the tape's adhesiveness, requiring frequent re-application after fixation failure. This is cumbersome and lacks stability. Therefore, a multi-angle adjustable anti-bending fixation device for postoperative chest tubes in cardiothoracic surgery is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] Technical problem solved: In view of the shortcomings of the prior art, the present invention provides a multi-angle adjustable anti-bending fixation device for chest tubes after thoracic surgery, which solves the problems of inconvenient operation of chest tubes and inability to achieve multi-angle bending in the prior art.

[0005] Technical Solution: To achieve the above objectives, the present invention provides the following technical solution: a multi-angle adjustable anti-bending fixation device for a chest drainage tube after thoracic surgery, comprising a drainage tube; a drainage bottle; a junction mechanism for controlling the bending of the drainage tube; and a positioning mechanism for positioning the drainage tube. The drainage tube includes an upper tube and a lower tube, with a joint mechanism between the upper and lower tubes. The upper tube is connected to a contact tube through the joint mechanism, and an insertion tube is provided on the contact tube. The lower tube is inserted into the drainage bottle. The contact tube has a "D" shaped structure, and the flat surface of the contact tube is in contact with the user's skin.

[0006] Preferably, the node mechanism includes a lower plate and an upper plate, the upper plate is connected to the upper tube, the lower plate is connected to the lower tube, a connecting spring is connected between the lower plate and the upper plate, and a telescopic tube is provided between the lower plate and the upper plate.

[0007] Preferably, a support piece is provided inside the contact tube, and the support piece is used to support the internal D-shaped space of the "D-shaped" contact tube.

[0008] Preferably, the positioning mechanism includes a hanging wheel, a hanging ring on the hanging wheel, the hanging ring being inserted into the drainage pipe, an arc-shaped groove on the hanging wheel, the arc-shaped groove being connected to the drainage pipe, and a hanging bracket being installed on the hanging wheel.

[0009] Preferably, a rotating wheel is rotatably connected to the side of the hanging wheel, the surface of the rotating wheel is wound with a rubber strip, and a slicing plate is connected to the hanging wheel.

[0010] Preferably, the slice is located on the side of the adhesive strip, and multiple adhesive strips are adhered to the contact tube, which adheres the contact tube to the user's skin.

[0011] Preferably, the pulley is further connected to a rotating sleeve, a hanging strap is wound around the rotating sleeve, a plug is connected to the hanging strap, and the pulley is provided with a slot that mates with the plug.

[0012] Preferably, the rotating sleeve is provided with a coil spring inside, one end of which is connected to the pulley and the other end of which is connected to the rotating sleeve.

[0013] Preferably, multiple node mechanisms are provided, and the multiple node mechanisms are evenly arranged on the drainage pipe.

[0014] Beneficial effects: Compared with the prior art, the present invention provides a multi-angle adjustable anti-bending fixation device for chest tubes after thoracic surgery, which has the following beneficial effects: 1. This postoperative chest drainage tube in cardiothoracic surgery features a multi-angle adjustable anti-bending fixation device. By incorporating multiple node mechanisms on the drainage tube, and utilizing flexible telescopic tubes and connecting springs, it forms directional bending nodes, concentrating the bending points of the tube at preset locations to prevent random bending and compression. The connecting springs provide support and limit the return of the bent areas, preventing excessive bending that could cause lumbar blockage, ensuring continuous and normal drainage of pleural effusion and pneumothorax, and reducing the risk of discomfort and postoperative complications caused by poor drainage.

[0015] 2. This multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery uses a D-shaped structure for the contact tube, which fits flat against the skin and is not easy to roll, effectively preventing the tube from shifting position. With the integrated adhesive strip assembly, the adhesive strip can be cut at any time to complete the fixation. Even if the patient's skin sweats, the adhesive can be quickly replenished, solving the problems of traditional tape being easy to fall off and needing frequent replacement. This greatly improves the reliability of tube fixation and reduces patient pain.

[0016] 3. This postoperative chest drainage tube fixation device for cardiothoracic surgery features a multi-angle adjustable anti-bending mechanism. It integrates a hanging frame, hanging ring, and retractable strap through a positioning mechanism, offering diverse functions. When in bed, the hanging frame can be attached to an external fixator, relying on gravity to ensure smooth drainage. When out of bed, the hanging frame can be carried by hand, or the strap can be draped diagonally over the shoulder, eliminating the need to lift the drainage bottle and preventing it from affecting the drainage pressure differential. A spring mechanism allows for automatic retraction of the strap, making storage and use extremely convenient, significantly reducing patient activity restrictions and optimizing the postoperative experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery proposed in this invention. Figure 2 This is a schematic diagram of the drainage bottle structure of a multi-angle adjustable anti-bend fixation device for post-thoracic and cardiothoracic surgery chest tubes proposed in this invention. Figure 3 This is a schematic diagram of the joint mechanism of a multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery proposed in this invention. Figure 4 This is a schematic diagram of the contact tube structure of a multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery proposed in this invention. Figure 5 This is a schematic diagram of the internal contact tube of a multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery proposed in this invention. Figure 6 This is a schematic diagram of the positioning mechanism of a multi-angle adjustable anti-bending fixation device for a chest tube after thoracic surgery, as proposed in this invention. Figure 7 This is a schematic diagram of the strap connection of a multi-angle adjustable anti-bending fixation device for a chest tube after thoracic surgery, as proposed in this invention.

[0018] In the diagram: 1. Drainage tube; 2. Drainage bottle; 3. Joint mechanism; 101. Lower tube; 102. Upper tube; 103. Connecting spring; 104. Lower sheet body; 105. Upper sheet body; 4. Contact tube; 401. Support sheet; 5. Insertion tube; 6. Positioning mechanism; 601. Hanging wheel; 602. Hanger; 603. Adhesive strip; 604. Rotating wheel; 605. Hanging ring; 606. Arc groove; 607. Rotating sleeve; 608. Hanging strap; 609. Plug; 610. Slot; 611. Coil spring; 612. Slice. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-7 A multi-angle adjustable anti-bending fixation device for chest drainage tube after thoracic surgery includes a drainage tube 1; a drainage bottle 2; a joint mechanism 3 for controlling the bending of the drainage tube 1; and a positioning mechanism 6 for positioning the drainage tube 1.

[0021] In this embodiment, the drainage tube 1 includes an upper tube 102 and a lower tube 101, with a junction mechanism 3 between them. The upper tube 102 is connected to a contact tube 4 via the junction mechanism 3, and an insertion tube 5 is mounted on the contact tube 4. The lower tube 101 is inserted into the drainage bottle 2. The drainage tube 1 is segmented into two tube sections: the upper tube 102 and the lower tube 101. A junction mechanism 3 is installed at the connection point between the upper tube 102 and the lower tube 101. The end of the upper tube 102 away from the lower tube 101 is also connected to the contact tube 4 via the junction mechanism 3. The contact tube 4 has an integrally mounted insertion tube 5 facing the patient's chest cavity, which is used to introduce fluid or gas. The bottom end of the lower tube 101 is directly inserted and fixed to the interface of the drainage bottle 2, ultimately guiding the drainage medium into the drainage bottle 2 for collection. The entire pipeline forms a complete drainage channel from the insertion tube 5, the contact tube 4, the upper tube 102, the lower tube 101 to the drainage bottle 2.

[0022] Furthermore, the contact tube 4 has a D-shaped structure, with its flat surface in contact with the user's skin. A support plate 401 is installed inside the contact tube 4 to support the internal D-shaped space. The overall cross-section of the contact tube 4 is D-shaped, consisting of an arc-shaped surface and a flat end face. During assembly, the flat end face of the contact tube 4 is completely fitted to the patient's chest wall skin, increasing the contact area between the tube and the skin. Compared to traditional circular tubes, the D-shaped structure effectively prevents the contact tube 4 from rolling or shifting on the skin surface, ensuring stable insertion. The inner cavity of the contact tube 4 forms a corresponding D-shaped cavity, inside which the support plate 401 is fixedly installed. The support plate 401 is arranged along the axial direction of the tube, providing rigid support to the D-shaped inner cavity. This prevents the contact tube 4 from denting or collapsing under pressure or tension, maintaining the internal diameter of the tube and ensuring smooth drainage throughout.

[0023] Furthermore, the node mechanism 3 includes a lower plate 104 and an upper plate 105. The upper plate 105 is connected to the upper tube 102, and the lower plate 104 is connected to the lower tube 101. A connecting spring 103 connects the lower plate 104 and the upper plate 105, and a telescopic tube is provided between the lower plate 104 and the upper plate 105. Multiple node mechanisms 3 are provided, and the multiple node mechanisms 3 are evenly arranged on the drainage tube 1. The node mechanism 3 is the core component for realizing the flexible bending and anti-blocking protection of the drainage tube 1, and mainly consists of the lower plate 104, the upper plate 105, the connecting spring 103, and the telescopic tube. The upper plate 105 is fixedly assembled to the end of the upper tube 102, and the lower plate 104 is fixedly assembled to the end of the lower tube 101; a telescopic tube is coaxially arranged between the upper plate 105 and the lower plate 104 to connect the upper and lower sections of the pipeline and ensure the continuity of the drainage channel. Meanwhile, a connecting spring 103 is installed between the outer sides of the two sections. The spring deforms synchronously with the telescopic tube, providing external support and elastic reset. To further enhance the overall bending adaptability of the drainage tube, the drainage tube 1 is not equipped with only a single node mechanism 3, but multiple node mechanisms 3 are configured according to actual usage needs, and all node mechanisms 3 are evenly distributed along the length of the drainage tube 1. This multi-point bendable design can distribute the bending deformation of the tube to various nodes, avoiding local stress concentration. It can meet the tube repositioning needs in different scenarios such as patient turning over and moving, and fundamentally prevent the problem of random bending and blockage of the drainage tube.

[0024] In addition, the positioning mechanism 6 includes a hanging wheel 601, on which a hanging ring 605 is provided. The hanging ring 605 is inserted into the drainage tube 1. The hanging wheel 601 is provided with an arc-shaped groove 606, which is connected to the drainage tube 1. A bracket 602 is installed on the hanging wheel 601. The positioning mechanism 6, with the hanging wheel 601 as the main body, is used to limit, mount, and fix the drainage tube 1. The hanging ring 605 with an annular structure is integrally assembled on the hanging wheel 601. The hanging ring 605 is directly sleeved on the outside of the drainage tube 1, so that the entire positioning mechanism 6 can slide and adjust its position along the axial direction of the drainage tube 1 to adapt to different mounting points. The hanging wheel 601 has a concave arc-shaped groove 606 machined on the side facing the drainage tube 1. The contour of the arc-shaped groove 606 matches the outer diameter of the drainage tube 1. The drainage tube 1 is fitted into the arc-shaped groove 606, forming a double limiting structure with the hanging ring 605, effectively preventing the hanging wheel 601 from rotating or shifting during use, and ensuring the stability of the assembly structure. A hanging bracket 602 is rigidly installed on the outside of the hanging wheel 601. This component is a load-bearing structure. When the patient is bedridden, the hanging bracket 602 can be suspended from a fixed object such as a bed frame, relying on gravity to ensure smooth drainage. When the patient is out of bed, the entire drainage device can be carried by holding the hanging bracket 602. It is simple to operate and flexible to use.

[0025] In addition, a rotating wheel 604 is rotatably connected to the side of the hanging wheel 601. An adhesive strip 603 is wound around the surface of the rotating wheel 604, and a slicing blade 612 is connected to the hanging wheel 601. The slicing blade 612 is located on the side of the adhesive strip 603. Multiple adhesive strips 603 are adhered to the contact tube 4, which adheres the contact tube 4 to the user's skin. The rotating wheel 604 is rotatably mounted on the side of the hanging wheel 601. The rotating wheel 604 can rotate flexibly around its own axis, and its roller surface is wound with medical adhesive strips 603 in a complete circle, achieving integrated storage of the adhesive strips and eliminating the need to carry additional tape rolls. A slicing blade 612 is fixedly connected to the hanging wheel 601 at the position where the adhesive strip is dispensed. The slicing blade 612 is located on the side of the adhesive strip 603, forming a simple cutting structure. The operator can pull the end of the adhesive strip 603, causing the rotating wheel 604 to rotate and release the adhesive strip. After pulling out the appropriate length, the adhesive strip can be quickly cut with the help of the slicing blade 612, making the operation convenient. The cut adhesive strips 603 are sequentially pasted onto the surface of the contact tube 4 that contacts the skin. Multiple sets of adhesive strips work together to firmly adhere and fix the contact tube 4 to the patient's chest wall skin. Even if the patient's activity or sweating causes a decrease in adhesion, new adhesive strips can be easily removed and cut for re-adhesion, effectively preventing the tube from shifting or rolling and ensuring the reliable fixation of the drainage device.

[0026] It is worth noting that a rotating sleeve 607 is also connected to the pulley 601. A hanging strap 608 is wound around the rotating sleeve 607, and a plug 609 is connected to the hanging strap 608. The pulley 601 is provided with a slot 610 that mates with the plug 609. A coil spring 611 is provided inside the rotating sleeve 607. One end of the coil spring 611 is connected to the pulley 601, and the other end of the coil spring 611 is connected to the rotating sleeve 607. A rotatable rotating sleeve 607 is also installed on the outer side of the pulley 601. The rotating sleeve 607 has a cylindrical structure, and a long strip of hanging strap 608 is wound around its outer wall. In the normal state, the hanging strap 608 is completely rolled up on the surface of the rotating sleeve 607, and the overall structure is compact and does not occupy extra space. A rigid plug 609 is integrally connected to the free end of the hanging strap 608. A slot 610 matching the size and structure of the plug 609 is opened at the corresponding position on the pulley 601. The two form a snap-fit ​​structure. After pulling out the lanyard 608 and adjusting it to the appropriate length, inserting the plug 609 into the slot 610 locks it in place, preventing the lanyard from retracting on its own. This allows the patient to easily wear the lanyard diagonally across their shoulder, enabling the drainage device to be carried in a back-carrying manner. A coil spring 611 is built into the internal cavity of the rotating sleeve 607. This coil spring 611 is an elastic reset component, with one end fixed to the base of the hanging wheel 601 and the other end connected to the inner wall of the rotating sleeve 607. When the lanyard 608 is pulled outward, it causes the rotating sleeve 607 to rotate synchronously, allowing the coil spring 611 to accumulate elastic potential energy. After use, pulling out the plug 609 releases the lock, the coil spring 611 releases its elastic force, and drives the rotating sleeve 607 to rotate in the opposite direction, automatically rewinding the lanyard 608. This eliminates the need for manual winding, making storage convenient and further enhancing the ease of use of the device.

[0027] The working principle is as follows: First, when the chest drainage tube is in use, the circular insertion tube 5 is inserted into the patient's body for drainage. Then, the effusion will flow downward from the insertion tube 5 into the contact tube 4, and then continue to flow into the telescopic sleeve of the junction mechanism 3. Next, it continues to flow into the connecting tube between the upper tube 102 and the lower tube 101, and finally flows into the drainage bottle 2. Therefore, the overall flow path is the same as above. Because traditional chest tubes can become blocked during effusion drainage due to bending, preventing timely and effective drainage and causing discomfort or worsening of symptoms, and because they are simply round, transparent tubes, this type of tube has certain practical drawbacks. When the patient is lying down, the round tube easily rolls under the skin, easily causing misalignment. Furthermore, it is inconvenient to use when the patient is asleep at night or when bending is required, increasing the risk of blockage due to excessive bending and posing a safety hazard. The core idea of ​​this new solution is to create multiple easily bendable points, namely the node mechanism 3, because it is difficult to determine the bending points of a straight round tube during bending, thus minimizing the risk of kinking. Since the process is random, the chest drainage tube is designed with multiple telescopic sleeves, similar to a "straw," allowing it to bend at multiple angles. Because of the telescopic sleeves, their rigidity is reduced compared to the upper tube 102 and lower tube 101, making them more flexible. Therefore, a connecting spring 103 with some elasticity is fitted over the entire external casing. The connecting spring 103 provides external protection and support at bending points. The connecting spring 103 has a certain bending correction elasticity, thus providing support for the telescopic sleeves and preventing excessive bending and blockage during patient turning or accidental bending. If the patient needs to avoid many areas during drainage, multiple node mechanisms 3 can be installed to allow for bending and clearance. Secondly, the positioning mechanism 6 is designed to attach and fix the drainage when the patient is walking or in a fixed position. If the patient is lying in a fixed position, the hanger 602 can be hung at a fixed point so that the effusion can flow from top to bottom into the drainage bottle 2. If the patient is walking, such as going to the toilet or exercising outdoors, they can hold the hanger 602. At this time, the hanging ring 605 will move up to the position of the node mechanism 3 and lock, allowing the patient to lift the entire drainage bottle 2 for walking drainage. The traditional method is for the patient to directly lift the drainage bottle 2 and walk. However, when the patient lifts the drainage bottle 2, the height of the drainage bottle 2 will inevitably rise. Firstly, this may affect the flow rate of the effusion. Secondly, when the drainage bottle 2 is raised, the connecting pipe may bend, which may easily cause the pipe to bend and become blocked.The rotating wheel 604 is provided on the hanging wheel 601 to provide adhesive strip 603 for bonding at any time. The periphery of the insertion tube 5 generally needs to be fixed with adhesive strip 603. However, after the skin sweats, the bonding effect of adhesive strip 603 will gradually decrease. Therefore, the patient or medical staff can pull out the adhesive strip on the rotating wheel 604, pull out an appropriate length, tilt it so that it contacts the slice 612 and cuts it, and then stick this piece of adhesive strip 603 to the position that needs to be fixed. Secondly, considering that patients do not have space to hold the hanger 602 when walking or exercising, a strap 608 is provided. The strap 608 can be pulled out and placed on the patient's shoulder. After wrapping it around once, the plug 609 is inserted into the slot 610 to form a snap-fit. So at this time, the device is like a "sling bag" structure, using the shoulder position for support and fixation while walking. The coil 611 is provided to facilitate automatic retraction after the plug 609 is pulled out, without the need for the patient to manually retract it, similar to the automatic retraction of a "measuring tape".

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A multi-angle adjustable anti-bending fixation device for chest tubes after cardiothoracic surgery, characterized in that, include: Drainage tube (1); Drainage bottle (2); The node mechanism (3) is used to control the bending of the drainage tube (1); Positioning mechanism (6) is used to position the drainage tube (1); The drainage tube (1) includes an upper tube (102) and a lower tube (101). A joint mechanism (3) is provided between the upper tube (102) and the lower tube (101). The upper tube (102) is connected to a contact tube (4) through the joint mechanism (3). An insertion tube (5) is provided on the contact tube (4). The lower tube (101) is inserted into the drainage bottle (2). The structure of the contact tube (4) is "D-shaped", and the flat surface of the contact tube (4) is in contact with the user's skin.

2. The multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 1, characterized in that: The node mechanism (3) includes a lower plate (104) and an upper plate (105). The upper plate (105) is connected to the upper tube (102), and the lower plate (104) is connected to the lower tube (101). A connecting spring (103) is connected between the lower plate (104) and the upper plate (105), and a telescopic tube is provided between the lower plate (104) and the upper plate (105).

3. The multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 1, characterized in that: The contact tube (4) is provided with a support piece (401), which is used to support the internal D-shaped space of the "D-shaped" contact tube (4).

4. The multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 1, characterized in that: The positioning mechanism (6) includes a pulley (601), a hanging ring (605) is provided on the pulley (601), the hanging ring (605) is inserted into the drainage pipe (1), the pulley (601) is provided with an arc groove (606), the arc groove (606) is connected to the drainage pipe (1), and a hanger (602) is installed on the pulley (601).

5. The multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 4, characterized in that: A rotating wheel (604) is rotatably connected to the side of the pulley (601), and a rubber strip (603) is wound around the surface of the rotating wheel (604). A slicing plate (612) is connected to the pulley (601).

6. The multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 5, characterized in that: The slice (612) is located on the side of the adhesive strip (603), and multiple adhesive strips (603) are attached to the contact tube (4), which attach the contact tube (4) to the user's skin.

7. The multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 5, characterized in that: The pulley (601) is also connected to a rotating sleeve (607), a hanging strap (608) is wound on the rotating sleeve (607), a plug (609) is connected to the hanging strap (608), and a slot (610) is provided on the pulley (601) to cooperate with the plug (609).

8. The multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 7, characterized in that: The rotating sleeve (607) is equipped with a coil spring (611), one end of which is connected to the pulley (601), and the other end of which is connected to the rotating sleeve (607).

9. A multi-angle adjustable anti-bending fixation device for postoperative chest tube in cardiothoracic surgery according to claim 1, characterized in that: The node mechanism (3) is provided in multiple ways, and the multiple node mechanisms (3) are evenly arranged on the drainage pipe (1).

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