A chest tube positioning device for thoracic surgery

Abstract

The present application belongs to the technical field of medical apparatus and instruments, and particularly relates to a chest tube positioning device for thoracic surgery nursing, which comprises a first dressing part, a medical rubber ring, a second dressing part, a catheter fixing part, a clamping ring assembly and a clamping strip arranged on the clamping ring assembly. The first dressing part is coated with the medical rubber ring and attached to the skin. One end of the clamping strip can be inserted into the interior of the clamping ring assembly and change the clamping degree of the clamping ring assembly. The clamping ring assembly is sleeved on the medical rubber ring, clamps the medical rubber ring and the chest tube and keeps them fixed. The second dressing part has a spacing with the first dressing part. The catheter fixing part is arranged on the second dressing part. The present application can effectively reduce the discomfort caused by the drainage tube caused by the patient's daily activities. The pulling force will not directly act on the wound, reducing the risk of secondary trauma caused by improper management of the tube.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a thoracic cavity tube positioning device for thoracic surgery nursing. Background Technology

[0002] Thoracic tube placement is of paramount importance in medical practice. It involves the correct placement of various tubes and catheters within the thoracic cavity to ensure treatment effectiveness and patient safety. Thoracic tubes primarily include endotracheal intubation tubes, tracheostomy cannulas, central venous catheters, PICC lines, pulmonary artery catheters, and chest drainage tubes. These tubes occupy different positions within the thoracic cavity and each has a specific function. Thoracic tube placement is a complex and delicate medical procedure requiring physicians with extensive professional knowledge and clinical experience. Correct tube placement is crucial for patient treatment outcomes and life safety.

[0003] The aforementioned types of tubes typically require the assistance of imaging techniques such as X-rays and ultrasound for accurate positioning. These techniques provide clear images of the internal thoracic cavity, helping doctors determine the location and depth of the tubes. Furthermore, doctors must select the appropriate tube type and insertion method based on the patient's specific condition and the characteristics of the lesion. For example, chest drainage tubes are usually inserted at the ribcage. After insertion, the tube effectively drains pleural effusion and pneumothorax, significantly improving respiratory function and effectively preventing and treating infection. After positioning, the chest tube requires further fixation with dressings. However, when the patient turns over, sits, or walks, the drainage tube may cause a noticeable feeling of heaviness or pulling. This discomfort may exacerbate wound tension, potentially leading to wound dehiscence, delaying the healing process, and resulting in poor recovery comfort. Summary of the Invention

[0004] The purpose of this invention is to provide a thoracic tube positioning device for thoracic surgery nursing, which can effectively reduce the discomfort caused by the drainage tube falling or being pulled due to the patient's daily activities, and the pulling force will not be directly applied to the wound, reducing the possibility of tearing. For patients who need to have a thoracic tube in place for a long time, this greatly improves the quality of life of the patients and reduces the risk of secondary trauma caused by improper tube management.

[0005] The specific technical solution adopted by this invention is as follows:

[0006] A thoracic cavity tube positioning device for thoracic surgery nursing includes a first dressing part, a medical rubber ring, a second dressing part, a catheter fixation, a retaining ring assembly, and a retaining strip disposed on the retaining ring assembly. The first dressing part covers the medical rubber ring and is attached to the skin. One end of the retaining strip can be inserted into the inside of the retaining ring assembly and change the tightness of the retaining ring assembly. The retaining ring assembly is fitted onto the medical rubber ring, clamping the medical rubber ring to the thoracic cavity tube and keeping it fixed. The second dressing part is spaced from the first dressing part. The catheter is fixed on the second dressing part. The thoracic cavity tube passes through the retaining ring assembly and is clamped on the catheter fixation. A reserved portion of the thoracic cavity tube is located between the second dressing part and the first dressing part, so that the reserved portion of the thoracic cavity tube between the second dressing part and the first dressing part is in a relaxed state.

[0007] In a preferred embodiment, the medical rubber ring is configured as an annular disc with a cavity at the bottom and a protruding side that makes its bottom surface higher than the epidermis. The cavity can be filled with a suitable sterile cotton dressing. The middle of the disc is adapted to accommodate a thoracic tube with an insertion hole. The top surface of the disc and the diameter surrounding the insertion hole are provided with a ring sleeve. The retaining ring assembly is engaged with and clamped to the outside of the ring sleeve.

[0008] In a preferred embodiment, the retaining ring assembly includes two oppositely disposed minor arc ring plates; and

[0009] A connecting ring plate, the two ends of which are connected to the common end of two minor arc ring plates, the minor arc ring plates being elastically able to move away from or close to each other, one of the minor arc ring plates being provided with a first wrench extending outwards, and the other minor arc ring plate being provided with a second wrench having the same structure as described above.

[0010] In a preferred embodiment, the locking bar is located on the first wrench and faces the second wrench;

[0011] An adjustment groove is provided on the minor arc ring plate of the second wrench, and one end of the locking bar is inserted into the adjustment groove and moves relative to the minor arc ring plate;

[0012] A fixing block is provided on the inferior arc ring plate of the second wrench, and an adjusting fastener is provided on the same side and above the adjusting groove. The adjusting fastener cooperates with the locking strip to lock or loosen.

[0013] In a preferred embodiment, a connecting piece is provided between the adjusting fastener and the fixing block, and the adjusting fastener and the fixing block form a flexible connection through the connecting piece.

[0014] In a preferred embodiment, the top of the adjusting fastener extends upward to form a fastening plate, and its bottom extends downward to form a fastening tooth, located on the second wrench, with a through groove corresponding to the fastening plate.

[0015] In a preferred embodiment, the card strip has equally spaced teeth, with a tooth groove between two teeth. When one end of the card strip is located inside the adjustment groove, the teeth are engaged in the tooth groove.

[0016] In a preferred embodiment, the catheter fixation includes two opposing clamps, each clamp having a notch for inserting a thoracic tube;

[0017] A patch is provided between the two tube clamps. One end of the patch is fixed and adhesive, while the other end is movable and adhesive. When the thoracic tube is inserted, the movable end of the patch is folded over and adhered to the fixed end.

[0018] In a preferred embodiment, a perforated line is provided at the connection position between the first dressing part and the second dressing part, allowing the first dressing part and the second dressing part to be separately adapted and placed at different positions on the skin.

[0019] The technical effects achieved by this invention are as follows:

[0020] In this invention, for ease of use, the first dressing part and the medical rubber ring are provided with slits. The first dressing part and the medical rubber ring are placed over the thoracic tube along the slits, and then the first dressing part is attached to the skin. Since the first dressing part and the second dressing part can be separated by a perforated line, the separation distance between the first dressing part and the second dressing part can be flexibly adjusted according to the actual operation. A portion of the thoracic tube can be reserved between the two dressing parts to keep the thoracic tube relaxed. When the thoracic tube is accidentally pulled, the reserved portion of the tube will fall out, effectively reducing the discomfort caused by the drainage tube falling or being pulled due to the patient's daily activities.

[0021] In this invention, the medical rubber ring is raised above the skin surface by a disc. When the first dressing is applied to the patient, a suitable sterile cotton pad is filled into the medical rubber ring to quickly absorb wound exudate. The ring design allows the retaining ring assembly to securely hold the thoracic tube and the ring together. When the thoracic tube descends, the ring and the first dressing attached to the skin can alleviate the force to some extent, preventing the downward pull from directly impacting the wound and reducing the risk of tearing. The ring is made of medical rubber, which is both soft and resilient, allowing it to fit snugly against the patient's skin and reduce discomfort from friction. Notably, the combination of the first dressing and the medical rubber ring ensures that the patient remains fixed in different positions, preventing displacement or loosening due to patient movement. This structure significantly improves the quality of life for patients requiring long-term indwelling thoracic tubes and reduces the risk of secondary trauma caused by improper tube management. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the first dressing part, the medical rubber ring, and the retaining ring assembly in this invention;

[0024] Figure 3 This is a half-sectional structural diagram of the retaining ring assembly in this invention;

[0025] Figure 4 In this invention Figure 3 A magnified structural diagram at point A;

[0026] Figure 5 This is a schematic diagram of the retaining ring assembly from another perspective in this invention;

[0027] Figure 6 In this invention Figure 5 A magnified structural diagram at point B;

[0028] Figure 7 This is a schematic diagram of the structure of the second dressing part and the catheter fixation in this invention;

[0029] Figure 8 This is a schematic diagram of the structure of the pipe fixed by the fabric in this invention.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. First Dressing Section;

[0032] 2. Medical rubber ring; 201. Disc; 202. Cavity; 203. Ring sleeve;

[0033] 3. Snap ring assembly; 301. Slightly curved ring plate; 302. Connecting ring plate; 303. First wrench; 304. Second wrench; 305. Through groove; 306. Adjusting groove; 307. Adjusting fastener; 308. Buckle plate; 309. Buckle tooth; 310. Fixing block; 311. Connecting piece;

[0034] 4. Locking strip; 401. Locking tooth; 402. Tooth groove;

[0035] 5. Second dressing section;

[0036] 6. Catheter fixation; 601. Catheter clamp; 602. Adhesive application;

[0037] 7. Drill wire. Detailed Implementation

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0041] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0042] Example 1

[0043] Please see the appendix Figure 1 As shown, the present invention provides a thoracic cavity tube positioning device for thoracic surgery nursing, including a first dressing part 1, a medical rubber ring 2, a second dressing part 5, a catheter fixation 6, a retaining ring assembly 3, and a retaining strip 4 disposed on the retaining ring assembly 3. The first dressing part 1 covers the medical rubber ring 2 and is attached to the skin. One end of the retaining strip 4 can be inserted into the inside of the retaining ring assembly 3 and change the tightness of the retaining ring assembly 3. The retaining ring assembly 3 is fitted on the medical rubber ring 2, clamping the medical rubber ring 2 and the thoracic cavity tube and keeping it fixed. The second dressing part 5 has a gap with the first dressing part 1. The catheter fixation 6 is disposed on the second dressing part 5. The thoracic cavity tube passes through the retaining ring assembly 3 and is clamped on the catheter fixation 6. A reserved portion of the thoracic cavity tube is located between the second dressing part 5 and the first dressing part 1, so that the thoracic cavity tube reserved between the second dressing part 5 and the first dressing part 1 is in a relaxed state.

[0044] Please see the appendix Figure 1 or Figure 7 As shown, a perforated line 7 is provided at the connection position between the first dressing part 1 and the second dressing part 5, allowing the first dressing part 1 and the second dressing part 5 to be separately adapted and placed on different positions of the skin. The connection structure between the first dressing part 1 and the second dressing part 5 can be made of a material that does not have the ability to adhere. The perforated line 7 can also be set in two places, that is, in addition to the position close to the first dressing part 1, it can also be set at the position close to the second dressing part 5.

[0045] Specifically, both the first dressing section 1 and the second dressing section 5 are medical sterile breathable dressings that make smooth contact with the skin surface.

[0046] More specifically, for ease of use, the first dressing part 1 and the medical rubber ring 2 are designed with slits. The first dressing part 1 and the medical rubber ring 2 are placed over the thoracic tube along the slits, and then the first dressing part 1 is applied to the skin. Since the first dressing part 1 and the second dressing part 5 can be separated by the perforated line 7, the separation distance between the first dressing part 1 and the second dressing part 5 can be flexibly adjusted according to the actual operation. A portion of the thoracic tube can be left between the two dressing parts to keep the thoracic tube relaxed. When the thoracic tube is accidentally pulled, the pre-reserved portion of the tube will fall out, effectively reducing the discomfort caused by the drainage tube falling or being pulled due to the patient's daily activities.

[0047] Please see the appendix Figure 2 As shown, the medical rubber ring 2 is configured as an annular disc 201. The bottom of the disc 201 has a cavity 202, and its side protrudes so that its bottom surface is higher than the epidermis. The cavity 202 can be filled with a suitable sterile cotton dressing. The middle part of the disc 201 is adapted to the chest tube and has an insertion hole. The top surface of the disc 201 and the diameter surrounding the insertion hole are provided with a ring sleeve 203. The retaining ring assembly 3 is locked and clamped to the outside of the ring sleeve 203.

[0048] Specifically, the medical rubber ring 2 is raised above the skin surface by the set disc 201. When the first dressing part 1 is applied to the patient, the medical rubber ring 2 is filled with a suitable sterile cotton dressing to quickly absorb the wound exudate. In addition, the design of the ring sleeve 203 allows the retaining ring component 3 to lock and clamp the thoracic tube and the ring sleeve 203 together. When the thoracic tube falls, the ring sleeve 203 and the first dressing part 1 that is attached to the epidermis can relieve the force to a certain extent, so that the downward force will not directly act on the wound and reduce the possibility of tearing.

[0049] More specifically, the ring 203 is made of medical-grade rubber, which is both soft and tough. It can fit closely to the patient's skin and reduce discomfort caused by friction. It is worth mentioning that the combination of the first dressing part 1 and the medical rubber ring 2 ensures that the patient can remain fixed in different positions and will not shift or loosen due to the patient's movement. This structure greatly improves the quality of life for patients who need to have a chest tube placed for a long time and reduces the risk of secondary trauma caused by improper tube management.

[0050] Please see the appendix Figures 2-4As shown, the retaining ring assembly 3 includes two slightly curved ring plates 301 arranged opposite each other; and a connecting ring plate 302. The two ends of the connecting ring plate 302 are connected to the common ends of the two slightly curved ring plates 301. The slightly curved ring plates 301 can elastically move away from or closer to each other. One of the slightly curved ring plates 301 is provided with a first wrench 303 extending outwardly, and the other slightly curved ring plate 301 is provided with a second wrench 304 with the same structure as described above. Specifically, the two slightly curved ring plates 301 form an elastic structure through the connecting ring plate 302, and can return to their original shape after moving away from or closer to each other.

[0051] Please see the appendix Figures 3-5 As shown, the locking bar 4 is located on the first wrench 303 and faces the second wrench 304;

[0052] An adjustment groove 306 is provided on the minor arc ring plate 301 located on the second wrench 304. One end of the locking strip 4 is inserted into the adjustment groove 306 and moves relative to the minor arc ring plate 301.

[0053] A fixing block 310 is provided on the inferior arc ring plate 301 of the second wrench 304. An adjusting fastener 307 is provided on the same side and above the adjusting groove 306. The adjusting fastener 307 cooperates with the locking strip 4 to lock or loosen.

[0054] Please see the appendix Figure 6 As shown, a connecting piece 311 is provided between the adjusting fastener 307 and the fixing block 310, and a flexible connection is formed between the adjusting fastener 307 and the fixing block 310 through the connecting piece 311.

[0055] Specifically, the flexibility between the adjusting fastener 307 and the fixing block 310 comes from the connecting piece 311, so that the adjusting fastener 307 can return to its original state after the force of deformation or displacement disappears.

[0056] Please see the appendix Figure 3 or Figure 4 As shown, the top of the adjusting fastener 307 extends upward to form a fastener plate 308, and its bottom extends downward to form a fastener tooth 309, which is located on the second wrench 304. A through groove 305 is provided corresponding to the fastener plate 308. The locking strip 4 has locking teeth 401 arranged at equal intervals. There is a tooth groove 402 between two locking teeth 401. When one end of the locking strip 4 is located inside the adjusting groove 306, the fastener tooth 309 is locked in the tooth groove 402.

[0057] Specifically, when the locking strip 4 is fastened inside the adjusting groove 306, the locking teeth 309 on the adjusting fastener 307 are engaged in the tooth groove 402 of the locking strip 4, thus constraining the two inferior arc ring plates 301 so that they cannot move away or relax. When it is necessary to remove the locking strip 4, press the fastener plate 308 to make the fastener plate 308 biased towards the through groove 305, and the locking teeth 309 at the bottom of the adjusting fastener 307 disengage from the tooth groove 402, so that the locking strip 4 is in a relaxed state. Remove the retaining ring assembly 3. Since the adjusting fastener 307 is a flexible connection, it can still be used again after resetting.

[0058] According to the above structure, after the thoracic tube is fitted along the slit, the locking strip 4 is inserted into the adjustment groove 306. At the same time, the first wrench 303 and the second wrench 304 are pinched, forcing the locking strip 4 to move into the adjustment groove 306. As the locking strip 4 moves into the adjustment groove 306, the gap between the first wrench 303 and the second wrench 304 gradually decreases, and conversely, the gap between the first wrench 303 and the second wrench 304 increases, thereby adjusting the degree of fixation of the locking ring assembly 3 on the thoracic tube.

[0059] Please see the appendix Figure 7 or Figure 8 As shown, the catheter fixation 6 includes two oppositely arranged tube clamps 601. The tube clamps 601 are notched for inserting the thoracic tube. A patch 602 is provided between the two tube clamps 601. One end of the patch 602 is fixed and adhesive, and the other end is movable and adhesive. When the thoracic tube is inserted, the movable end of the patch 602 is folded over and adhered to the fixed end.

[0060] Based on the above structure, after the first dressing part 1 is fixed, the second dressing part 5 is applied to the epidermis at a suitable position, leaving part of the thoracic cavity tube and clamping the tube body onto the tube clamp 601. Then, the patch 602 is folded over and glued to fix it, restraining the thoracic cavity tube to prevent dislocation, thus completing the cooperation and fixation of the first dressing part 1 and the second dressing part 5.

[0061] The working principle of this invention is as follows: The first dressing part 1 and the medical rubber ring 2 are fitted over the thoracic tube along the slit. Then, the first dressing part 1 is applied to the skin. Since the first dressing part 1 and the second dressing part 5 can be separated by the perforated line 7, the separation distance between the first dressing part 1 and the second dressing part 5 can be flexibly adjusted according to actual operation. After fitting the thoracic tube along the slit, the retaining strip 4 is inserted into the adjusting groove 306. Simultaneously, the first wrench 303 and the second wrench 304 are pinched, forcing the retaining strip 4 to move inward into the adjusting groove 306. As the retaining strip 4 moves inward into the adjusting groove 306, the first wrench 303 and the second wrench 304... The gap between 4 gradually narrows, and conversely, the gap between the first wrench 303 and the second wrench 304 widens, thereby adjusting the degree of fixation of the clasp assembly 3 on the thoracic tube. Finally, after the first dressing part 1 is fixed, the second dressing part 5 is placed on the epidermis at a suitable position, leaving part of the thoracic tube and clamping the tube body onto the tube clamp 601. Then, the patch 602 is folded over and glued to fix it, restraining the thoracic tube to prevent dislocation, thus completing the cooperation and fixation of the first dressing part 1 and the second dressing part 5. When replacing, the second dressing part 5 needs to be removed first, then the clasp assembly 3 needs to be removed, and finally the first dressing part 1 needs to be peeled off for replacement.

[0062] Example 2

[0063] The only difference between it and Example 1 is the method of use, specifically:

[0064] When medical staff use this device, they can first adjust the patient's position, and then apply the first dressing part 1 and the second dressing part 5 to the required positions on the body. First, apply the first dressing part 1, then gently press the skin below it downwards, and then apply the second dressing part 5. Afterwards, release the pressure. As the body relaxes, the skin loosens, resulting in a relaxed state between the first dressing part 1 and the second dressing part 5 (similar to the process of straightening a wrist after a slight rotation). When the patient slightly turns over or walks, the tube will preferentially apply pressure to the second dressing part 5. Due to the slight movement and the relaxed state between the first dressing part 1 and the second dressing part 5... In a relaxed state, the second dressing part 5 can bear most of the traction, and the relaxed state between the two can share the burden of the feeling of heaviness caused by slight movements, that is, it is not easy to cause traction on the first dressing part 1. However, when there is a violent movement or the chest tube is pulled, when its end is pulled strongly, the pulling force is first transmitted from the second dressing part 5 to the first dressing part 1. Due to the large pulling force, when the force exceeds the bearing limit of the perforated line 7, the perforated line 7 breaks quickly. The breaking of the perforated line 7 separates the first dressing part 1 from the second dressing part 5. At this time, the second dressing part 5 bears all the pressure, reducing the pressure on the first dressing part 1 for the patient.

[0065] Example 3

[0066] The only difference between it and Example 2 is the application method, specifically:

[0067] The first dressing part 1 and the second dressing part 5 generally have a certain degree of elasticity (for thin-film dressings). The patient's position can be adjusted first, and then the first dressing part 1 and the second dressing part 5 can be applied to the desired locations on the body. First, apply the first dressing part 1, then gently press the skin below it upwards before applying the second dressing part 5. After application, the skin will slightly recover, and the first dressing part 1 and the second dressing part 5 will be taut (to facilitate breakage under greater tension; additionally, to achieve a more easily broken-off effect). The size of the perforation of the perforated thread 7 should meet the requirements for breakage, that is, it should not easily break under slight pulling, and the protective effect can be achieved by relying solely on the elasticity between the dressings. Under greater pulling force, the force transmission is greater, and it can be easily broken. However, the skin between the two is loose. Therefore, when subjected to slight pulling force, due to the elasticity of the dressing connection, the elasticity combined with the loose skin has an effect that is basically the same as in Example 2. Under violent pulling, the perforated thread 7 is more likely to break, and the subsequent process is basically the same as in Example 2.

[0068] The size of the perforated wire 7 in Embodiments 2 and 3 above should be such that it is not easy to break under slight pulling, but when pulled more, the instantaneous tensile force increases and it can break. The specific parameter design can be fine-tuned according to the selected materials. Of course, other material designs that can meet the above requirements should fall within the protection scope of this application.

[0069] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A thoracic cavity tube positioning device for thoracic surgical nursing, characterized in that: include First dressing section (1); A medical rubber ring (2) is applied to the skin by covering the first dressing part (1) with the medical rubber ring (2); The clasp assembly (3) and the clasp strip (4) disposed on the clasp assembly (3), one end of the clasp strip (4) can be inserted into the interior of the clasp assembly (3) and change the clamping degree of the clasp assembly (3). The clasp assembly (3) is fitted on the medical rubber ring (2) to clamp the medical rubber ring (2) and the thoracic tube and keep it fixed. The second dressing part (5) has a gap with the first dressing part (1); The catheter is fixed (6), which is located on the second dressing part (5). The thoracic tube passes through the retaining ring assembly (3) and is fixed on the catheter (6). A reserved portion of the thoracic tube is located between the second dressing part (5) and the first dressing part (1), so that the thoracic tube stored between the second dressing part (5) and the first dressing part (1) is in a relaxed state. The first dressing part (1) and the medical rubber ring (2) are set with slits. The first dressing part (1) and the medical rubber ring (2) are put over the chest tube along the slits. Then the first dressing part (1) is attached to the skin. Since the first dressing part (1) and the second dressing part (5) can be separated by the perforated line (7), the separation distance between the first dressing part (1) and the second dressing part (5) can be flexibly adjusted according to the actual operation. A part of the chest tube can be reserved between the two dressing parts to keep the chest tube relaxed. When the chest tube is accidentally pulled, the reserved part of the tube will fall out. The medical rubber ring (2) is configured as an annular disc (201). The bottom of the disc (201) has a cavity (202), and its side protrudes so that its bottom surface is higher than the epidermis. The cavity (202) can be filled with a suitable sterile cotton dressing. The middle of the disc (201) is adapted to the thoracic tube and has an insertion hole. The top surface of the disc (201) and the diameter surrounding the insertion hole are provided with a ring sleeve (203). The retaining ring assembly (3) is locked outside the ring sleeve (203) and clamped. When the thoracic tube descends, the ring (203) and the first dressing part (1) that is attached to the epidermis can relieve the force, so that the downward force will not be directly applied to the wound; A perforated line (7) is provided at the connection position between the first dressing part (1) and the second dressing part (5) to allow the first dressing part (1) and the second dressing part (5) to be separated and adapted to be placed in different positions on the skin; Slightly press the skin below the first dressing part (1) downwards, then apply the second dressing part (5), and then release the pressure. When the body relaxes, the skin loosens, so that the first dressing part (1) and the second dressing part (5) are in a relaxed state. After the first dressing part (1) is applied, gently press the skin below the first dressing part (1) upwards, then apply the second dressing part (5). After the application is completed, the skin slightly recovers, and the first dressing part (1) and the second dressing part (5) become taut.

2. The thoracic cavity tube positioning device for thoracic surgical nursing according to claim 1, characterized in that: The retaining ring assembly (3) includes two inferior arc ring plates (301) arranged opposite to each other; and a connecting ring plate (302), the two ends of which are connected to the common ends of the two inferior arc ring plates (301). The inferior arc ring plates (301) can elastically move away from or close to each other. One of the inferior arc ring plates (301) is provided with an outwardly extending first wrench (303), and the other inferior arc ring plate (301) is provided with a second wrench (304).

3. The thoracic cavity tube positioning device for thoracic surgical nursing according to claim 2, characterized in that: The locking bar (4) is located on the first wrench (303) and faces the second wrench (304); An adjustment groove (306) is provided on the minor arc ring plate (301) of the second wrench (304), and one end of the locking strip (4) is inserted into the adjustment groove (306) and moves relative to the minor arc ring plate (301); A fixing block (310) is provided on the inferior arc ring plate (301) of the second wrench (304), and an adjusting fastener (307) is provided on the same side and above the adjusting groove (306). The adjusting fastener (307) cooperates with the locking strip (4) to lock or loosen.

4. A thoracic cavity tube positioning device for thoracic surgical nursing according to claim 3, characterized in that: A connecting piece (311) is provided between the adjusting fastener (307) and the fixing block (310), and the adjusting fastener (307) and the fixing block (310) form a flexible connection through the connecting piece (311).

5. A thoracic cavity tube positioning device for thoracic surgical nursing according to claim 3, characterized in that: The top of the adjusting fastener (307) extends upward to form a fastener plate (308), and its bottom extends downward to form a fastener tooth (309), which is located on the second wrench (304). A through groove (305) is provided corresponding to the fastener plate (308).

6. A thoracic cavity tube positioning device for thoracic surgical nursing according to claim 5, characterized in that: The card strip (4) has equally spaced teeth (401), and there is a tooth groove (402) between two teeth (401). When one end of the card strip (4) is located inside the adjustment groove (306), the buckle (309) is locked in the tooth groove (402).

7. A thoracic cavity tube positioning device for thoracic surgical nursing according to any one of claims 1-6, characterized in that: The catheter fixation (6) includes two oppositely arranged tube clamps (601), the tube clamps (601) being notched for inserting the thoracic tube; A patch (602) is provided between the two tube clamps (601). One end of the patch (602) is fixed and adhesive, and the other end is movable and adhesive. When the thoracic tube is inserted, the movable end of the patch (602) is folded over and adhered to the fixed end.

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