Anti-accidental-touch chest drainage tube fixing device

Abstract

An anti-accidental-touch chest drainage tube fixing device, which effectively solves the problems of existing chest drainage tubes, including an insufficient shock absorption and buffering effect, the lack of a mechanism for isolating external drainage-tube shaking, inconvenience for patients to get out of bed due to the absence of a temporary opening-closing and sealing mechanism, an insufficient anti-accidental-pulling mechanism, inadequate buffering capacity, and the lack of a self-sealing mechanism. The technical solution provided herein is an anti-accidental-touch chest drainage tube fixing device, comprising a self-adhesive patch (1) applied to a wound, and a drainage tube (2), wherein a rectangular box (3) is provided above the self-adhesive patch (1), a winding roller (4) is provided in the rectangular box (3), the ends of the winding roller (4) are articulated to side plates of the rectangular box (3) by means of torsion springs, and a cylindrical block (5) is provided in the middle of the winding roller (4); two transmission rollers (6) are provided on the lower side of the winding roller (4); two longitudinal shafts (7) are provided in the cavity of the rectangular box (3); a double-ended lead screw (8) is provided in the cavity of the rectangular box (3), and two sliders (9) are screwed on the double-ended lead screw (8); a gear (10) is provided at the right end of the double-ended lead screw (8), a swing rod (11) is provided on the self-adhesive patch (1), and a ring gear (12) is provided at the upper end of the swing rod (11); and an arc-shaped rack (13) with a downward opening is provided on the self-adhesive patch (1), and when the swing rod (11) drives the rectangular box (3) to swing back and forth, the gear (10) can rotate under the action of the rack (13).

Description

A device for fixing a chest drainage tube to prevent accidental contact Technical Field

[0001] This invention relates to the field of chest tube fixation devices, and in particular to a fixation device for preventing accidental contact with chest drainage tubes. Background Technology

[0002] When fixing the pleural tube, medical staff directly attach and fix the tube to the vicinity of the pleural wound using medical tape, thereby fixing the wound section of the drainage tube to the body. It is then connected to the air inlet tube of the drainage device to achieve the effect of draining air and fluid from the pleural cavity, ultimately achieving the goal of lung expansion. During use, the tube has its own weight, and it is easily touched or pulled by surroundings when turning over or going out, causing the tube to shake. The shaking is transmitted to the chest cavity and can easily cause secondary injury inside the chest cavity. In this regard, the thoracic tube fixation device for thoracic surgery nursing disclosed in patent document CN118903648B has a solution in which the sealing plate 41 in the sealing mechanism 4 can close the drainage tube when the tube on the drainage bottle is disconnected from the drainage tube of the wound section of the human body. However, it requires a complex sealing mechanism 4 set at the end of the drainage tube to achieve this. However, in terms of effectiveness, the lungs are in a negative pressure state during inhalation, and it is difficult for a single sealing plate 4 to achieve complete sealing. The sealing effect is not good. From a practical point of view, this solution cannot be used for common drainage tubes and lacks basic applicability. Moreover, this method increases the manufacturing and processing difficulty of the drainage tube, and also increases the difficulty of disinfection when the caregiver changes the bottle, creating a large number of hygiene dead spots. In addition, when patients use existing technology, they need to clamp the drainage tube with double clamps or fold it back and fix it with tape when getting out of bed or going out for examinations. They then need to pass the drainage bottle through the bed rails, lower the bed rails, release the drainage tube, and slowly get up. This process is cumbersome and inconvenient, and usually requires assistance from others. The patient cannot complete the above actions alone. When the drainage tube encounters a large pulling force, it lacks sufficient buffer and slack. Accidental pulling can cause the drainage tube to become misaligned or pulled out of the body, which is quite dangerous. In this case, the drainage tube at the wound section should be folded back immediately to prevent outside air from entering the lungs and causing infection.

[0003] In summary, the existing technology has the following obvious defects: 1. It lacks shock absorption and cushioning effects, and lacks a mechanism to isolate the shaking of the external drainage tube, which can easily lead to secondary damage to the chest cavity; 2. It lacks a temporary opening and closing sealing mechanism, which makes it inconvenient for patients to get out of bed; 3. It lacks a sufficient anti-misoperation mechanism and sufficient cushioning, which can easily cause the drainage tube in the chest cavity to become displaced or detach from the lung; 4. It lacks a self-sealing mechanism, which can easily lead to the inhalation of outside air into the lungs and cause infection when the drainage tube connector breaks.

[0004] To address the aforementioned issues, a device for securing the chest drainage tube to prevent accidental contact is proposed. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a fixation device for preventing accidental contact with the chest drainage tube, which effectively solves the problems of existing chest drainage tubes lacking shock absorption and cushioning effect, lacking a mechanism to isolate the shaking of the external drainage tube, lacking a temporary opening and closing sealing mechanism that makes it inconvenient for patients to get out of bed, lacking sufficient anti-accidental pulling mechanism, lacking sufficient cushioning, and lacking a self-sealing mechanism.

[0006] The technical solution includes a self-adhesive patch and a drainage tube on the wound. Above the self-adhesive patch is a rectangular box, inside which is a horizontal and rotatable winding roller. The end of the winding roller is hinged to the side plate of the rectangular box by a torsion spring. A cylindrical block perpendicular to its axis is set in the middle of the winding roller. There are two drive rollers arranged in the front-back direction on the lower side of the winding roller. The drainage tube first passes upward through the lower side plate of the rectangular box, then passes through the right drive roller, then passes around the winding roller and the cylindrical block on it in sequence, and finally passes downward through the lower side plate of the rectangular box and extends out of the rectangular box via the left drive roller.

[0007] The rectangular box cavity contains two longitudinal shafts that correspond one-to-one with the transmission rollers, and the transmission rollers are rotatably mounted on the longitudinal shafts. At the rear end of the rectangular box cavity, there is a horizontal double-ended screw, on which two sliders that can move left and right but cannot rotate are screwed. The sliders are fixed together with their corresponding longitudinal shafts. When the double-ended screw rotates, it can drive the two longitudinal shafts to move closer or further away from each other through the sliders, thereby driving the two transmission wheels to move closer or further away, so that the two transmission wheels can clamp and seal the drainage tubes on them.

[0008] A gear is fixed to the right end of the double-ended lead screw, and a swing rod that can swing back and forth is hinged to the self-adhesive top. The lower right side plate of the rectangular box is hinged to the swing rod via a torsion spring. A gear ring that mates with the gear is fixed to the upper end of the swing rod. When the rectangular box rotates around the upper end of the swing rod, the gear rotates along the first gear ring, which can drive the double-ended lead screw to rotate.

[0009] The self-adhesive device has a downward-opening, arc-shaped rack. When the swing arm drives the rectangular box to swing back and forth, the gear can rotate under the action of the rack.

[0010] Preferably, a protrusion is provided at the hinge point between the rear side plate of the rectangular box and the swing rod. The swing rod and the rectangular box are hinged together by the protrusion, and a torsion spring is installed between the protrusion and the swing rod. A blind hole is radially opened on the outer edge of the protrusion, and a locking pin is provided in the blind hole. A compression spring is between the locking pin and the bottom of the blind hole, and a locking hole is on the swing rod. In the initial state, the locking pin and the locking hole are misaligned. When the protrusion rotates to the locking hole position, the locking pin enters the locking hole, making the rectangular box fixed. At this time, the two transmission rollers also clamp the drainage pipe and form a seal.

[0011] Preferably, the rectangular box has a hole on the rear side plate, a double-ended lead screw is located in the hole, and there are multiple guide rods in the hole. The guide rods pass through the slider, and the slider can move left and right on the guide rods.

[0012] Preferably, both the self-adhesive and the lower side plate of the rectangular box are provided with magnets, and the two magnets fix the rectangular box to the human wound.

[0013] Preferably, the rectangular box has a transparent and detachable cover at the front end.

[0014] Preferably, a longitudinal rod is provided between the two drive rollers, and the drainage tube can be closed during the process of the two drive rods approaching each other and pressing the longitudinal rod; the longitudinal rod is fixed on the rectangular box.

[0015] Preferably, the end of the rack is hinged to the self-adhesive via a torsion spring.

[0016] Preferably, the self-adhesive is fixed with a horizontal fixed shaft, and the lower end of the swing arm is hinged to the fixed shaft via a torsion spring; the fixed shaft has a small shaft extending back and forth, and the end of the rack is hinged to the small shaft via a torsion spring.

[0017] Preferably, notches are provided at the middle of the upper end of the gear ring and on the right side of the gear ring.

[0018] Preferably, the cylindrical block is rotatably mounted in the middle of the winding roller.

[0019] This invention features a clever structure that isolates vibrations or shaking from the portion of the drainage tube outside the body, preventing these movements and vibrations from being transmitted into the chest cavity and avoiding secondary damage to the lungs. It also incorporates a temporary opening and closing sealing mechanism, facilitating independent ambulation for the patient. Furthermore, it has sufficient buffer length to withstand significant pulling forces, minimizing the risk of the drainage tube shifting or dislodging within the lungs, thus greatly improving safety. In the event of a disconnection, the invention automatically forms seals at multiple points along the drainage tube, ensuring a tight seal and preventing outside air from entering the lungs. Attached Figure Description

[0020] Figure 1 is a front sectional view of the present invention.

[0021] Figure 2 is a three-dimensional diagram of the present invention.

[0022] Figure 3 is a three-dimensional exploded view of the present invention.

[0023] Figure 4 is a three-dimensional diagram of the present invention.

[0024] Figure 5 is a front view of the present invention when the cover is removed.

[0025] Figure 6 is a side view of the present invention.

[0026] Figure 7 is a rear view of the present invention.

[0027] Figure 8 is a top view of the present invention.

[0028] Figure 9 is a schematic diagram of the installation method of the rocker arm, gear ring, and rack in this invention.

[0029] Figure 10 is a diagram showing the initial positional relationship between the rocker arm, the protrusion, and the locking pin in this invention. Detailed Implementation

[0030] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] As shown in Figures 1 to 10, the present invention includes a self-adhesive patch 1 and a drainage tube 2 on the wound. Above the self-adhesive patch 1 is a rectangular box 3. Inside the rectangular box 3 is a horizontal and rotatable winding roller 4. The end of the winding roller 4 is hinged to the side plate of the rectangular box 3 by a torsion spring. A cylindrical block 5 perpendicular to its axial direction is provided in the middle of the winding roller 4. There are two drive rollers 6 arranged in the front-back direction on the lower side of the winding roller. The drainage tube 2 first passes through the lower side plate of the rectangular box 3 upwards, then passes through the right drive roller 6, then passes around the winding roller 4 and the cylindrical block 5 on it in sequence, and finally passes through the lower side plate of the rectangular box 3 downwards through the left drive roller 6 and extends out of the rectangular box 3.

[0032] The rectangular box 3 contains two longitudinal shafts 7 that correspond one-to-one with the transmission rollers 6. The transmission rollers 6 are rotatably mounted on the longitudinal shafts 7. The rear end of the rectangular box 3 contains a horizontal double-ended lead screw 8. Two sliders 9 that can move left and right but cannot rotate are screwed onto the double-ended lead screw 8. The sliders 9 are fixed together with their corresponding longitudinal shafts 7. When the double-ended lead screw 8 rotates, it can drive the two longitudinal shafts 7 to move closer or further away from each other via the sliders 9, thereby driving the two transmission wheels to move closer or further away, thus enabling the two transmission wheels to clamp and seal the drainage tubes 2 on them.

[0033] A gear 10 is fixed to the right end of the double-ended lead screw 8. A swing rod 11 that can swing back and forth is hinged to the self-adhesive 1. The lower right side plate of the rectangular box 3 is hinged to the swing rod 11 via a torsion spring. A gear ring 12 that cooperates with the gear 10 is fixed to the upper end of the swing rod 11. When the rectangular box 3 rotates around the upper end of the swing rod 11, the gear 10 rotates along the first gear ring 12, which can drive the double-ended lead screw 8 to rotate.

[0034] The self-adhesive 1 has a downward-opening arc-shaped rack 13. When the swing rod 11 drives the rectangular box 3 to swing back and forth, the gear 10 can rotate under the action of the rack 13.

[0035] To ensure that the two drive rollers 6 close together and close the drainage tube 2 without loosening after being subjected to strong pulling, a protrusion 14 is provided at the hinge point between the rear side plate of the rectangular box 3 and the swing rod 11. The swing rod 11 and the rectangular box 3 are hinged together by the protrusion 14, and a torsion spring is installed between the protrusion 14 and the swing rod 11. A blind hole is radially opened on the outer edge of the protrusion 14, and a locking pin 15 is provided in the blind hole. A compression spring is between the locking pin 15 and the bottom of the blind hole. There is a locking hole 16 on the swing rod 11. In the initial state, the locking pin 15 and the locking hole 16 are misaligned. When the protrusion 14 rotates to the position of the locking hole 16, the locking pin 15 enters the locking hole 16, making the rectangular box 3 fixed. At this time, the two drive rollers 6 will also clamp the drainage tube 2 and form a seal.

[0036] In order to enable the two sliders 9 to move left and right but not rotate, thereby enabling the two transmission rollers 6 to move closer or further away from each other, and ultimately control the opening and closing of the drainage pipe 2, the rectangular box 3 has a hole on its rear side plate, the double-ended lead screw 8 is located in the hole, and there are multiple guide rods 17 inside the hole. The guide rods 17 pass through the sliders 9, and the sliders 9 can move left and right on the guide rods 17.

[0037] To prevent the rectangular box 3 from wobbling when the patient walks normally, magnets 18 are provided on both the self-adhesive 1 and the lower side plate of the rectangular box 3. The two magnets 18 fix the rectangular box 3 to the human wound.

[0038] To facilitate the installation of the through-drainage tube 2, the front end of the rectangular box 3 is provided with a transparent and detachable cover 19.

[0039] In order to ensure that the drainage pipe 2 is closed when the two drive rollers 6 move toward each other and approach each other, a longitudinal rod is provided between the two drive rollers 6. The drainage pipe 2 can be closed when the two drive rods approach each other and squeeze the longitudinal rod. The longitudinal rod is fixed on the rectangular box 3.

[0040] In order to prevent the rectangular box 3 from swinging left and right when it rotates around the upper end of the rocker arm 11, the end of the rack 13 is hinged to the self-adhesive 1 by a torsion spring.

[0041] In order to install the rocker arm 11 and the arc-shaped rack 13, a horizontal fixed shaft 20 is fixed on the self-adhesive 1, and the lower end of the rocker arm 11 is hinged to the fixed shaft 20 by a torsion spring; the fixed shaft 20 has a small shaft 21 extending back and forth, and the end of the rack 13 is hinged to the small shaft 21 by a torsion spring.

[0042] To prevent the rectangular box 3 from getting stuck when it swings left and right around the upper end of the swing rod 11, notches 22 are provided at the middle of the upper end of the gear ring 12 and on the right side of the gear ring 12.

[0043] In order to reduce the friction between the drain tube 2 and the winding wheel, the cylindrical block 5 is rotatably installed in the middle of the winding roller 4.

[0044] It is worth noting that with the aforementioned longitudinal bar configuration, when the drive roller 6 presses against the longitudinal bar, the longitudinal bar and drive roller 6 cooperate to close the drainage tube 2. Of course, to avoid damaging the drainage tube 2 or preventing it from being snapped, the longitudinal bar could be made of rubber or easily deformable plastic. It should be emphasized that even without the longitudinal bar, the two drive rollers 6 can still clamp the drainage tube 2. Simultaneously, because the drainage tube 2 wraps around the drive roller 6 multiple times, it forms multiple closures, ensuring that outside air cannot directly enter the chest cavity and lungs.

[0045] As shown in Figures 3 and 5, the drainage tube 2 first penetrates upward through the lower side wall of the rectangular box 3, then winds sequentially around the right-side drive roller 6, the right half of the winding roller 4, and the cylindrical block 5 in the middle of the winding roller 4. After passing the cylindrical block 5, the drainage tube 2 winds in the opposite direction around the left half of the winding roller 4, then around the left-side drive roller 6, and finally penetrates downward through the lower side plate of the rectangular box 3 and is placed on the outside, ultimately connecting with the pipe on the drainage bottle. The drainage tube 2 and the air inlet pipe of the drainage bottle are connected via an interface. In the above, the drainage tube 2 winds in opposite directions around the left and right parts of the winding roller 4. This arrangement ensures that when the drainage tube 2 is subjected to tension, it drives the winding roller 4 to rotate, and the winding roller 4 simultaneously releases the drainage tube 2 from both sides. This serves two purposes: firstly, it provides a buffer, and secondly, it prevents the tension from being transmitted into the pleural cavity, thus protecting the pleural cavity.

[0046] When the patient gets out of bed, the drainage tube 2 needs to be temporarily closed. The specific procedure is as follows: The patient presses the upper part of the rectangular box 3 backward with their hand or arm, causing the rectangular box 3 to rotate around the lower end of the swing rod 11. When the rectangular box 3 rotates around the lower end of the swing rod 11, the gear 10 rolls on the gear ring 12. The gear 10 drives the double-ended screw 8 to rotate, which in turn drives the two sliders 9 to move closer to each other. When the rectangular box 3 rotates backward around the lower end of the swing rod 11 at a certain angle, the two transmission rollers 6 move closer to each other and cooperate with each other to form multiple closure points in the drainage tube 2, ensuring that the drainage tube 2 is closed. The patient slowly gets up. After getting up, the rectangular box 3 is released. Under the action of the torsion spring at the lower end of the swing rod 11, the rectangular box 3 returns to its original shape. During the recovery process, the gear 10 drives the double-ended screw 8 to reverse, which also causes the two transmission rollers 6 to move away from each other and return to their original positions. The drainage tube 2 is unblocked again. At this time, the patient can move around on their own.

[0047] When the drainage tube 2 is accidentally pulled, it pulls the left end of the rectangular box 3 upward. When the pulling force of the drainage tube 2 breaks through the attraction of the magnet 18, the rectangular box 3 swings clockwise around the upper end of the swing rod 11. During the swing, the gear 10 rolls along the gear ring 12. The gear 10 drives the double-ended lead screw 8 to rotate. The rotation of the double-ended lead screw 8 drives the corresponding transmission rollers 6 of the two sliders 9 to move closer to each other, and finally achieves multiple closures of the drainage tube 2. At the same time, the locking pin 15 on the protrusion 14 on the rear side of the rectangular box 3 also rotates to the locking hole 16. The locking pin 15 enters the locking hole 16 under the action of the compression spring, so that the rectangular box 3 cannot return to its original position. At this time, the two transmission rollers 6 firmly clamp the drainage tube 2 to seal it.

[0048] When encountering significant external force, the drainage tube 2 first pulls the rectangular box 3 upwards. Before the locking pin 15 reaches the locking hole 16, the winding roller 4 is pulled by the drainage tube 2 and rotates. During the rotation of the winding roller 4, thread is released on both sides, causing the drainage tube 2 at the wound to be loose, which acts as a buffer. When the two transmission rollers 6 approach each other and clamp the drainage tube 2, the drainage tube 2 at the wound is loose. The pulling force of the drainage tube 2 is directly transmitted to the self-adhesive 1, that is, the outer surface of the wound, through the rectangular box 3, without affecting the drainage tube 2 inserted into the human body. After the medical staff has finished processing, the rectangular box 3 is forcibly rotated counterclockwise around the upper end of the swing rod 11 to break through the locking force of the locking pin, so that the rectangular box 3 returns to its original state. At this time, the drainage tube 2 is unblocked again.

[0049] The end of the locking pin is hemispherical, which can force the locking pin to disengage from the locking hole when the force is large enough.

[0050] Of course, to further enhance tensile strength, the self-adhesive 1 can be replaced with a self-adhesive cloth that wraps around the body or a ring that is fastened to the body. This application chose the self-adhesive 1 based on considerations of comfort and practicality.

[0051] This invention features an ingenious structure that isolates vibrations or shaking from the portion of the drainage tube 2 located outside the body, preventing these movements and vibrations from being transmitted into the chest cavity and avoiding secondary damage to the lungs. It also incorporates a temporary opening and closing sealing mechanism, facilitating independent ambulation for the patient. Furthermore, it has sufficient buffer length to withstand significant pulling forces, minimizing the risk of the drainage tube 2 becoming displaced or detached within the lungs, thus greatly improving safety. In the event of a break in the drainage tube 2, it automatically forms seals at multiple points, ensuring a tight seal and preventing outside air from entering the lungs.

Claims

1. A device for fixing a chest drainage tube to prevent accidental contact, characterized in that, The device includes a self-adhesive patch (1) on the wound and a drainage tube (2). Above the self-adhesive patch (1) is a rectangular box (3). Inside the rectangular box (3) is a horizontal and rotatable winding roller (4). The end of the winding roller (4) is hinged to the side plate of the rectangular box (3) by a torsion spring. A cylindrical block (5) perpendicular to its axis is provided in the middle of the winding roller (4). There are two drive rollers (6) arranged in the front-back direction on the lower side of the winding roller. The drainage tube (2) first passes through the lower side plate of the rectangular box (3) upwards, then passes through the right drive roller (6), then passes around the winding roller (4) and the cylindrical block (5) on it in sequence, and finally passes through the lower side plate of the rectangular box (3) downwards through the left drive roller (6) and extends out of the rectangular box (3). The rectangular box (3) has two longitudinal shafts (7) that correspond one-to-one with the transmission rollers (6). The transmission rollers (6) are rotatably mounted on the longitudinal shafts (7). The rear end of the rectangular box (3) has a horizontal double-ended screw (8). Two sliders (9) that can move left and right but cannot rotate are screwed on the double-ended screw (8). The sliders (9) are fixed together with their corresponding longitudinal shafts (7). When the double-ended screw (8) rotates, it can drive the two longitudinal shafts (7) to move closer or further away from each other through the sliders (9), thereby driving the two transmission wheels to move closer or further away, thereby enabling the two transmission wheels to clamp and seal the drainage tubes (2) on them. The right end of the double-ended screw (8) is fixed with a gear (10), and the self-adhesive (1) is hinged with a swing rod (11) that can swing back and forth. The lower right side of the rear plate of the rectangular box (3) is hinged to the swing rod (11) by a torsion spring. The upper end of the swing rod (11) is fixed with a gear ring (12) that cooperates with the gear (10). When the rectangular box (3) rotates around the upper end of the swing rod (11), the gear (10) rotates along the first gear ring (12) and drives the double-ended screw (8) to rotate. The self-adhesive (1) has a downward-opening arc-shaped rack (13). When the swing rod (11) drives the rectangular box (3) to swing back and forth, the gear (10) can rotate under the action of the rack (13).

2. The anti-accidental contact chest drainage tube fixation device according to claim 1, characterized in that, The rectangular box (3) has a protrusion (14) at the hinge point between the rear side plate and the swing rod (11). The swing rod (11) and the rectangular box (3) are hinged together by the protrusion (14). A torsion spring is installed between the protrusion (14) and the swing rod (11). A blind hole is opened radially on the outer edge of the protrusion (14). A locking pin (15) is provided in the blind hole. A compression spring is between the locking pin (15) and the bottom of the blind hole. There is a locking hole (16) on the swing rod (11). In the initial state, the locking pin (15) and the locking hole (16) are misaligned. When the protrusion (14) rotates to the position of the locking hole (16), the locking pin (15) enters the locking hole (16) so that the rectangular box (3) is fixed. At this time, the two transmission rollers (6) also clamp the drainage pipe (2) and form a seal.

3. The anti-accidental contact chest drainage tube fixation device according to claim 2, characterized in that, The rectangular box (3) has a hole on the rear side plate, and a double-ended lead screw (8) is located in the hole. There are multiple guide rods (17) in the hole. The guide rods (17) pass through the slider (9), and the slider (9) can move left and right on the guide rods (17).

4. A device for fixing a chest drainage tube to prevent accidental contact as described in claim 1 or 3, characterized in that, The self-adhesive (1) and the rectangular box (3) are both provided with magnets (18) on their lower side plates. The two magnets (18) fix the rectangular box (3) to the human wound.

5. A device for fixing a chest drainage tube to prevent accidental contact as described in claim 4, characterized in that, The rectangular box (3) has a transparent and detachable cover (19) at the front end.

6. A device for fixing a chest drainage tube to prevent accidental contact as described in claim 3, characterized in that, A longitudinal rod is provided between the two drive rollers (6). The two drive rods can close the drainage pipe (2) by approaching each other and squeezing the longitudinal rod. The longitudinal rod is fixed on the rectangular box (3).

7. A device for fixing a chest drainage tube to prevent accidental contact as described in claim 1, characterized in that, The end of the rack (13) is hinged to the self-adhesive (1) by a torsion spring.

8. A device for fixing a chest drainage tube to prevent accidental contact according to claim 7, characterized in that, The self-adhesive (1) is fixed with a horizontal fixed shaft (20), and the lower end of the swing arm (11) is hinged to the fixed shaft (20) by a torsion spring; the fixed shaft (20) has a small shaft (21) extending back and forth, and the end of the rack (13) is hinged to the small shaft (21) by a torsion spring.

9. A device for fixing a chest drainage tube to prevent accidental contact as described in claim 7 or 8, characterized in that, The toothed ring (12) has notches (22) at the middle of its upper end and on the right side.

10. A device for fixing a chest drainage tube to prevent accidental contact according to claim 1, characterized in that, The cylindrical block (5) is rotatably mounted in the middle of the winding roller (4).

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