Anti-slip lock catch fixing device for outer drainage tube

Abstract

The utility model relates to the technical field of medical equipment, in particular to an anti-slip lock catch fixing device for an outer drainage tube, which comprises a dressing plaster, a first fixing device and a second fixing device, the first fixing device is fixedly connected with the dressing patch; a first channel is arranged in the dressing patch, a second channel is arranged in the first fixing device, and the first channel is communicated with the second channel; the second fixing device is used for fixing part of the drainage tube penetrating out of the first fixing device; the first fixing device comprises a rotating structure and a locking structure, the rotating structure is rotationally connected with the bottom of the first fixing device, a third channel is formed in the rotating structure and allows the drainage tube to penetrate through, and when the rotating structure rotates, the drainage tube is wound on the side wall of the rotating structure so as to fix the part, extending out of the wound, of the drainage tube; the locking structure is used for locking the rotating angle of the rotating structure. In this way, non-invasive fixation of the part, exposed out of the skin, of the drainage tube is achieved in a rotary winding mode.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an anti-slip and anti-disconnection locking and fixing device for an external drainage tube. Background Art

[0002] At present, the common methods for fixing external drainage tubes by medical staff after ultrasound catheterization are invasive suture supplemented by sterile gauze dressing, combined with dressing stickers and drainage tube fixing stickers. This method has many defects. For example, the surgical suture fixing method at the external drainage tube orifice is invasive, and wound exudate is likely to infect the granulation tissue around the suture. Moreover, skin secondary injury is easily caused during suture removal, increasing the pain and discomfort of patients. Pressurizing and fixing the external drainage tube wound with sterile gauze combined with dressing stickers requires cutting the size of the gauze and leaving a notch for the drainage tube. The operation steps are relatively cumbersome, and the exudate at the drainage tube wound is easily adhered to the gauze and difficult to remove after drying, which is likely to cause skin infection around the wound and secondary mechanical injury to the wound, increasing the risk of infection and the difficulty of dressing change. At the same time, it also reduces the comfort of patients and seriously affects the recovery of patients' conditions. The dressing sticker covered on the upper layer of the gauze has a reduced sticking force due to the influence of the gauze area, and its firmness and aesthetics are poor. The current methods for fixing drainage tubes are all clamping with two plates, and clinical feedback shows that their fixing performance is poor, which is likely to lead to poor fixation of the drainage tube and unsmooth drainage.

[0003] In summary, the above methods not only increase the risks of wound suture pain, dressing change pain, tube disconnection and skin infection around the wound for patients, but also increase the fear psychology of patients. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the problems in the above background art, and provide an anti-slip and anti-disconnection locking and fixing device for an external drainage tube.

[0005] To achieve the above purpose, an anti-slip and anti-disconnection locking and fixing device for an external drainage tube of the utility model includes:

[0006] A dressing sticker, a first fixing device and a second fixing device;

[0007] The first fixing device is fixedly connected to the dressing sticker, and the dressing sticker is used for fitting the skin;

[0008] A first channel is arranged in the dressing sticker, and a second channel is arranged in the first fixing device. The first channel is communicated with the second channel. The first channel is used for the drainage tube to pass through the dressing sticker, and the second channel is used for the drainage tube to pass through the first fixing device;

[0009] The second fixing device is used for fixing the part of the pipeline where the drainage tube passes out of the first fixing device;

[0010] The first fixing device includes a rotating structure and a locking structure. The rotating structure is rotatably connected to the bottom of the first fixing device. A third channel is provided inside the rotating structure for the drainage tube to pass through. When the rotating structure rotates, the drainage tube is wound around the side wall of the rotating structure to fix the part of the drainage tube extending out of the wound. The locking structure is used to lock the rotation angle of the rotating structure.

[0011] Preferably, the first fixing device further includes a housing. The rotating structure includes a roller, a transmission shaft, and a rotating knob. The roller is located inside the housing and is rotatably connected to the bottom of the housing. The rotating knob is located outside the housing. Both ends of the transmission shaft are fixedly connected to the centers of the roller and the rotating knob.

[0012] The rotating knob is used to control the rotation of the roller.

[0013] Preferably, the inside of the transmission shaft is a hollow structure. A first opening is provided on the side wall of the roller, and the first opening is communicated with the inside of the transmission shaft. A second opening is provided at the center of the top of the rotating knob, and the second opening is communicated with the inside of the transmission shaft.

[0014] The third channel is formed in the space where the first opening is communicated with the second opening.

[0015] Preferably, a third opening is provided at the top of the housing, and the transmission shaft extends out of the housing through the third opening.

[0016] The locking structure includes a convex block and a locking groove. The convex block is provided on the side wall of the transmission shaft, and the locking groove is provided on the side wall of the third opening facing the transmission shaft. A plurality of locking grooves are provided, and the plurality of locking grooves are evenly arranged circumferentially along the side wall of the third opening.

[0017] The locking groove is slidably connected to the convex block. When the transmission shaft is in the locked state, the locking groove abuts against the convex block to prevent the transmission shaft from rotating back.

[0018] Preferably, the locking groove includes a first groove wall and a second groove wall which are oppositely arranged. The first groove wall is inclined, and the inclination direction of the first groove wall is gradually approaching the side wall of the transmission shaft along the clockwise or counterclockwise rotation direction of the transmission shaft.

[0019] The convex block has elasticity. When the transmission shaft is in the rotating state, the convex block is compressed, the top of the convex block abuts against the first groove wall, and the convex block slides along the first groove wall.

[0020] When the transmission shaft is in the locked state, the convex block expands and contracts, and the side wall of the convex block abuts against the second groove wall.

[0021] Preferably, a spring is provided at the bottom of the bump, a groove is provided on the side wall of the transmission shaft, the spring is fixedly connected to the bottom of the groove, and the spring is used to make the bump protrude from and retract into the groove.

[0022] Preferably, the bump is made of an elastic material and is fixedly connected to the side wall of the transmission shaft.

[0023] Preferably, scale lines are provided on the surface of the top of the housing, the scale lines are correspondingly arranged with the locking grooves, and when the transmission shaft is in the locked state, the scale lines are used to display the tightening force of the transmission shaft at this time.

[0024] Preferably, the second fixing device includes a first fixing plate and a second fixing plate, the first fixing plate is rotatably connected to the second fixing plate, and the second fixing plate can rotate in a direction close to or away from the first fixing plate;

[0025] A fourth channel is provided between the first fixing plate and the second fixing plate, and the fourth channel is used for the drainage tube to pass through. When the first fixing plate and the second fixing plate are attached, the fourth channel is used to compress the drainage tube.

[0026] Preferably, a fourth opening is provided on the side wall of the dressing patch, a fifth opening is provided between the dressing patch and the housing, the fifth opening communicates the dressing patch and the interior of the housing, and the first channel is formed in the space where the fourth opening communicates with the fifth opening;

[0027] The fifth opening is located between the roller and the inner wall of the housing.

[0028] Based on this, the beneficial effects of the present invention are as follows:

[0029] 1. Through the solution of the present invention, a first fixing device is provided on the dressing patch. The first fixing device includes a rotating structure and a locking structure. The rotating structure can rotate. When the drainage tube passes through the first fixing device, it can rotate and wind around the rotating structure along with the rotating structure, so that the drainage tube is tightened. At the same time, the rotating angle of the rotating structure can be locked by the locking structure. The non-invasive fixing operation of the drainage tube is realized by the way of rotating and winding, avoiding secondary damage to the human body, and also avoiding the problem of unreliable fixation when the drainage tube is fixed by clamping.

[0030] 2. Through the solution of the present utility model, the locking structure includes a convex block and a locking groove. The convex block is located on the side wall of the transmission shaft extending out of the housing, and the locking groove is located on the side wall of the third opening of the housing for the transmission shaft to extend out. The two are slidably connected. The convex block has elasticity. When the transmission shaft rotates, the convex block can slide along the groove wall of the locking groove. At the same time, when the roller winds the drainage tube and is tightened and fixed, the drainage tube will give a reverse force to the roller. Since the convex block will abut against the groove wall of the locking groove after expansion and contraction, it can prevent the transmission shaft from rotating in the reverse direction by blocking the movement of the convex block, thereby preventing the roller from rotating in the reverse direction and loosening the drainage tube;

[0031] 3. Through the solution of the present utility model, the top of the housing has scale lines, which are correspondingly arranged with the locking grooves. The scale lines can display the magnitude of the tightening force when the convex block on the transmission shaft rotates to a certain locking groove, so as to facilitate the doctor to view and control the tightening force and prevent the doctor from over-rotating and pulling out the drainage tube from the wound. In this solution, the tightening force is preferably 8F or 10F. At this force, the drainage tube can be tightened and fixed without over-pulling the drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematically showing a side view of the anti-slip and unlocking fixing device according to an embodiment of the present utility model;

[0033] Figure 2 Schematically showing a view of the anti-slip and unlocking fixing device according to an embodiment of the present utility model;

[0034] Figure 3 Schematically showing a structural diagram of the locking structure according to an embodiment of the present utility model;

[0035] Figure 4 Schematically showing a structural diagram of the convex block according to the first embodiment of the present utility model;

[0036] Figure 5 Schematically showing a structural diagram of the convex block according to the second embodiment of the present utility model;

[0037] Figure 6 Schematically showing a structural diagram of the second fixing device according to an embodiment of the present utility model;

[0038] Explanation of the reference numerals: dressing patch 10, first channel 101, fourth opening 1011, fifth opening 1012, first fixing device 20, second channel 201, rotating structure 202, third channel 2021, first opening 20211, second opening 20212, roller 2022, transmission shaft 2023, groove 20231, rotating knob 2024, locking structure 203, protrusion 2031, spring 20311, locking groove 2032, first groove wall 20321, second groove wall 20322, shell 204, third opening 2041, scale line 2042, second fixing device 30, first fixing plate 301, second fixing plate 302, fourth channel 303, first arcuate groove 3031, second arcuate groove 3032, drainage tube 40. DETAILED DESCRIPTION

[0039] The content of the present application will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the content of the present application, rather than implying any limitation on the scope of the present application.

[0040] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0041] Figure 1 A side view schematically showing an anti-slip lock and fastening device according to an embodiment of the utility model, Figure 2 A schematic front view of an anti-slip lock fixing device according to an embodiment of the present invention is shown as follows: Figure 1 , 2 As shown, the utility model is a slip-proof locking and fixing device for an external drainage tube, comprising:

[0042] Dressing 10, first fixing device 20 and second fixing device 30;

[0043] The first fixing device 20 is fixedly connected to the dressing patch 10, and the dressing patch 10 is used to fit the skin;

[0044] A first channel 101 is provided in the dressing patch 10, and a second channel 201 is provided in the first fixing device 20. The first channel 101 is communicated with the second channel 201. The first channel 101 is used for the drainage tube 40 to pass through the dressing patch 10, and the second channel 201 is used for the drainage tube 40 to pass through the first fixing device 20.

[0045] The second fixing device 30 is used to fix the portion of the drainage tube 40 that passes through the first fixing device 20;

[0046] The first fixing device 20 includes a rotating structure 202 and a locking structure 203. The rotating structure 202 is rotatably connected to the bottom of the first fixing device 20. A third channel 2021 is provided in the rotating structure 202 for the drainage tube 40 to pass through. When the rotating structure 202 rotates, the drainage tube 40 is wound around the side wall of the rotating structure 202 to fix the part of the drainage tube 40 extending out of the wound. The locking structure 203 is used to lock the rotation angle of the rotating structure 202.

[0047] Specifically, after the operation, a cotton pad with a through hole in the center is used to dress the wound. At the same time, the drainage tube 40 can extend out of the wound through the through hole in the center of the cotton pad to achieve drainage.

[0048] The dressing patch 10 is arranged around the cotton pad and fits with the human skin to prevent the device for fixing the drainage tube 40 from directly detaching when directly pasted on the cotton pad, such as when the cotton pad loses its adhesiveness. After the drainage tube 40 passes through the cotton pad, it turns and penetrates into the dressing patch 10 and extends out, enters the first fixing device 20 fixed on the dressing patch 10, and after extending out of the first fixing device 20, it is clamped and fixed by the second fixing device 30, which can fully avoid the above situation.

[0049] In the prior art, when only clamped by a similar second fixing device 30, due to insufficient clamping force of the drainage tube 40, when the drainage tube 40 is clamped, it can still move, which is likely to cause the fixing of the drainage tube 40 to be unreliable. Therefore, in the present application, a first fixing device 20 is added between the second fixing device 30 and the wound. The first fixing device 20 includes a rotating structure 202 and a locking structure 203. The rotating structure 202 has a third channel 2021. When the drainage tube 40 passes through the first fixing device 20, it also passes through the rotating structure 202 in the first fixing device 20 through the third channel 2021. When the rotating structure 202 rotates, the drainage tube 40 can be gradually wound around the rotating structure 202 to tighten the drainage tube 40, and the rotation angle of the rotating structure 202 is locked by the locking structure 203 to prevent the rotating structure 202 from being pulled by the telescopic force of the drainage tube 40 and rotating in the reverse direction to loosen the drainage tube 40. With such a setting, better fixing of the drainage tube 40 can be achieved by the way of rotating and winding, avoiding the problem of unreliable fixing of the drainage tube 40.

[0050] Furthermore, as Figure 2 shown, the first fixing device 20 further includes a housing 204. The rotating structure 202 includes a roller 2022, a transmission shaft 2023 and a rotating knob 2024. The roller 2022 is located inside the housing 204 and is rotatably connected to the bottom of the housing 204. The rotating knob 2024 is located outside the housing 204. Both ends of the transmission shaft 2023 are fixedly connected to the centers of the roller 2022 and the rotating knob 2024;

[0051] The rotary knob 2024 is used to control the rotation of the roller 2022.

[0052] Specifically, the inside of the transmission shaft 2023 is arranged as a hollow structure. A first opening 20211 is provided on the side wall of the roller 2022, and the first opening 20211 communicates with the inside of the transmission shaft 2023. A second opening 20212 is provided at the center of the top of the rotary knob 2024, and the second opening 20212 communicates with the inside of the transmission shaft 2023. A third channel 2021 is formed in the space where the first opening 20211 communicates with the second opening 20212.

[0053] The transmission shaft 2023 is fixedly connected to the center of the roller 2022 and the center of the rotary knob 2024 respectively. When the drainage tube 40 passes through the roller 2022, the transmission shaft 2023, and the rotary knob 2024, when the rotary knob 2024 rotates, the protruding end of the drainage tube 40 will not rotate.

[0054] With such a setting, the drainage tube 40 passing through the rotary structure 202 first passes through the side wall of the roller 2022 and then passes out from the center of the roller 2022. When the roller 2022 rotates, the position of the first opening 20211 on the side wall of the roller 2022 changes, while the direction of the drainage tube 40 entering the first fixing device 20 is fixed, so that when the roller 2022 rotates, the drainage tube 40 can be wound around the side wall of the roller 2022, realizing the fixation of the drainage tube 40 by means of rotary winding.

[0055] Furthermore, Figure 3 The schematic diagram shows the locking structure of an embodiment of the present invention. Figure 4 The schematic diagram shows the bump of the first embodiment of the present invention. Figure 5 The schematic diagram shows the bump of the second embodiment of the present invention, as Figure 3-5 shown:

[0056] A third opening 2041 is provided at the top of the housing 204, and the transmission shaft 2023 extends out of the housing 204 through the third opening 2041;

[0057] The locking structure 203 includes a bump 2031 and a locking groove 2032. The bump 2031 is provided on the side wall of the transmission shaft 2023, and the locking groove 2032 is provided on the side wall of the third opening 2041 facing the transmission shaft 2023. A plurality of locking grooves 2032 are provided, and the plurality of locking grooves 2032 are evenly arranged circumferentially along the side wall of the third opening 2041;

[0058] The locking groove 2032 is slidably connected to the bump 2031. When the transmission shaft 2023 is in the locked state, the locking groove 2032 abuts against the bump 2031 to prevent the transmission shaft 2023 from rotating back.

[0059] Specifically, the locking groove 2032 includes a first groove wall 20321 and a second groove wall 20322 which are oppositely arranged. The first groove wall 20321 is inclined, and the inclination direction of the first groove wall 20321 is gradually approaching the transmission shaft 2023 along the clockwise or counterclockwise rotation direction of the transmission shaft 2023. At the same time, the convex block 2031 has elasticity.

[0060] With such a setting, when the transmission shaft 2023 rotates clockwise or counterclockwise, the convex block 2031 is gradually compressed by the first groove wall 20321, which will not affect the normal rotation of the transmission shaft 2023, and the drainage tube 40 is tightened. When the transmission shaft 2023 is in the locked state, the convex block 2031 moves out of the end of the first groove wall 20321 closest to the transmission shaft 2023 and falls into the space between the first groove wall 20321 and the second groove wall 20322 in the next locking groove 2032. The convex block 2031 expands and contracts due to its own elastic action, and due to the elastic action of the drainage tube 40, the side wall of the convex block 2031 abuts against the second groove wall 20322 in the next locking groove 2032. Furthermore, the second groove wall 20322 can prevent the convex block 2031 from moving in the reverse direction, thereby avoiding the reverse rotation of the transmission shaft 2023 to loosen the drainage tube 40, and realizing the fixing effect on the drainage tube 40 wound around the roller 2022.

[0061] The convex block 2031 having elasticity can have two implementation manners, as Figure 4 shown, its first implementation manner is:

[0062] A spring 20311 is arranged at the bottom of the convex block 2031, and a groove 20231 is arranged on the side wall of the transmission shaft 2023. The spring 20311 is fixedly connected to the bottom of the groove 20231, and the spring 20311 is used to make the convex block 2031 extend out of and retract into the groove 20231.

[0063] With such a setting, when the convex block 2031 slides along the first groove wall 20321, the spring 20311 is gradually compressed, so that the convex block 2031 can gradually retract into the groove 20231 without affecting the normal rotation of the transmission shaft 2023. When the convex block 2031 is located in the space between the first groove wall 20321 and the second groove wall 20322, the convex block 2031 is no longer compressed, and the spring 20311 expands and contracts to extend the convex block 2031 out of the groove 20231, so that the side wall of the convex block 2031 abuts against the second groove wall 20322, which can prevent the transmission shaft 2023 from rotating back.

[0064] As Figure 5As shown, in the second embodiment, the bump 2031 is made of an elastic material and has elasticity itself. The bump 2031 can be fixedly connected to the side wall of the transmission shaft 2023. When the bump 2031 abuts against the first groove wall 20321, the bump 2031 is compressed. When the bump 2031 is not abutted, after the bump 2031 expands and contracts, its side wall abuts against the second groove wall 20322, thereby restricting the rotation of the transmission shaft 2023.

[0065] Further, a scale line 2042 is provided on the surface of the top of the housing 204. The scale line 2042 is correspondingly arranged with the locking groove 2032. When the transmission shaft 2023 is in a locked state, the scale line 2042 is used to display the magnitude of the tightening force of the transmission shaft 2023 at this time.

[0066] With such a setting, when the drainage tube 40 gradually winds around the side wall of the roller 2022, both ends of the drainage tube 40 will be tightened. If the roller 2022 is rotated excessively, causing the drainage tube 40 to wind excessively, the drainage tube 40 in the human body will be directly pulled out, making drainage impossible. In this application, through multiple experiments, it is verified that when the pulling force on the drainage tube 40 is between 8F and 10F, it can ensure that the drainage tube 40 is tightened and the drainage tube 40 will not be pulled out of the wound. Through the setting of the scale line 2042, when the doctor rotates the rotary knob 2024 to control the rotation of the transmission shaft 2023, the doctor can accurately control the tightening force by directly observing the value displayed by the scale line 2042, and can avoid excessive tightening force and excessive pulling of the drainage tube 40.

[0067] Further, Figure 6 Schematically showing the structural schematic diagram of the second fixing device of an embodiment of the present invention, as Figure 6 shown:

[0068] The second fixing device 30 includes a first fixing plate 301 and a second fixing plate 302. The first fixing plate 301 is rotatably connected to the second fixing plate 302, and the second fixing plate 302 can rotate in a direction closer to or farther from the first fixing plate 301;

[0069] A fourth channel 303 is provided between the first fixing plate 301 and the second fixing plate 302. The fourth channel 303 is used for the drainage tube 40 to pass through. When the first fixing plate 301 and the second fixing plate 302 are attached, the fourth channel 303 is used to press the drainage tube 40.

[0070] Specifically, a plurality of second fixing devices 30 are provided. One is arranged near the protruding end of the rotary knob 2024, another is arranged near the end of the drainage tube 40, and the rest are located between the two and can be evenly arranged, so as to fix the entire pipe section of the drainage tube 40 extending from the rotary knob 2024.

[0071] The fourth channel 303 includes a first arc groove 3031 and a second arc groove 3032. The first arc groove 3031 is arranged on the surface of the first fixing plate 301 facing the second fixing plate 302, and the second arc groove 3032 is arranged on the surface of the second fixing plate 302 facing the first fixing plate 301. When the second fixing plate 302 moves toward the direction close to the first fixing plate 301 until the two are in contact, the first arc groove 3031 and the second arc groove 3032 form the fourth channel 303.

[0072] Connectors may also be provided at the ends of the first fixing plate 301 and the second fixing plate 302 away from the connection. When the first fixing plate 301 and the second fixing plate 302 are fitted or pressed against the drainage tube 40, the first fixing plate 301 and the second fixing plate 302 are fixed by connecting the connectors of the two to prevent the first fixing plate 301 and the second fixing plate 302 from being stretched apart due to the elastic action of the drainage tube 40.

[0073] Furthermore, a fourth opening 1011 is provided on the side wall of the dressing patch 10, and a fifth opening 1012 is provided between the dressing patch 10 and the shell 204. The fifth opening 1012 connects the dressing patch 10 and the inside of the shell 204, and the first channel 101 is formed in the space connecting the fourth opening 1011 to the fifth opening 1012. In this arrangement, since the dressing patch 10 is located around the cotton pad at the wound, when the drainage tube 40 passes through the cotton pad and enters the dressing patch 10, by arranging the first channel 101 inside the dressing patch 10, the drainage tube 40 will not be exposed to the outside of the dressing patch 10, and this section of the drainage tube 40 can be protected.

[0074] The fifth opening 1012 is located between the roller and the inner wall of the shell 204 so that the starting end of the drainage tube 40 entering the shell 204 is outside the wheel surface of the roller 2022, so that the drainage tube 40 can be wound around the wheel surface of the roller 2022 when the roller 2022 rotates.

[0075] To sum up, through the scheme of the utility model, a first fixing device 20 is provided on the dressing patch 10, and the first fixing device 20 includes a rotating structure 202 and a locking structure 203. The rotating structure 202 can rotate. When the drainage tube 40 passes through the first fixing device 20, it can be wound around the rotating structure 202 as the rotating structure 202 rotates, so that the drainage tube 40 is tightened. At the same time, the rotating structure 202 can be locked by the locking structure 203 at its rotation angle. The non-invasive fixation operation of the drainage tube is achieved by rotating and winding, which avoids secondary damage to the human body and can also avoid the problem of unreliable fixation when the drainage tube 40 is fixed by clamping it.

[0076] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept of the utility model. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

[0077] It should be understood that the magnitude of the sequence numbers of the steps in the utility model content and embodiments of the present application does not absolutely mean the sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Claims

1. A non-slip lock fixing device for an external drainage tube, characterized in that: include: A dressing patch, a first fixing device and a second fixing device; The first fixing device is fixedly connected to the dressing patch, and the dressing patch is used to fit the skin; A first channel is provided in the dressing patch, and a second channel is provided in the first fixing device, the first channel is communicated with the second channel, the first channel is used for the drainage tube to pass through the dressing patch, and the second channel is used for the drainage tube to pass through the first fixing device; The second fixing device is used to fix the portion of the drainage tube that passes through the first fixing device; The first fixing device includes a rotating structure and a locking structure. The rotating structure is rotatably connected to the bottom of the first fixing device. A third channel is provided in the rotating structure. The third channel is for the drainage tube to pass through. When the rotating structure rotates, the drainage tube is wrapped around the side wall of the rotating structure to fix the portion of the drainage tube extending out of the wound. The locking structure is used to lock the rotation angle of the rotating structure.

2. The anti-slip lock fixing device for an external drainage tube according to claim 1, characterized in that: The first fixing device further comprises a housing, the rotating structure comprises a roller, a transmission shaft and a rotating knob, the roller is located inside the housing, the roller is rotatably connected to the bottom of the housing, the rotating knob is located outside the housing, and both ends of the transmission shaft are fixedly connected to the center of the roller and the rotating knob; The rotating knob is used to control the rotation of the roller.

3. The anti-slip lock and fixing device for an external drainage tube according to claim 2, characterized in that: The interior of the transmission shaft is a hollow structure, a first opening is provided on the side wall of the roller, the first opening is communicated with the interior of the transmission shaft, and a second opening is provided at the center of the top of the rotating knob, the second opening is communicated with the interior of the transmission shaft; The third passage is formed in a space where the first opening communicates with the second opening.

4. The anti-slip lock fixing device for an external drainage tube according to claim 2, characterized in that: A third opening is provided on the top of the housing, and the transmission shaft extends out of the housing through the third opening; The locking structure comprises a protrusion and a locking groove, wherein the protrusion is arranged on the side wall of the transmission shaft, and the locking groove is arranged on the side wall of the third opening facing the transmission shaft, and a plurality of the locking grooves are arranged uniformly along the circumference of the side wall of the third opening; The locking groove is slidably connected to the protrusion. When the transmission shaft is in a locked state, the locking groove abuts against the protrusion to prevent the transmission shaft from rotating.

5. The anti-slip lock and fixing device for an external drainage tube according to claim 4, characterized in that: The locking groove comprises a first groove wall and a second groove wall arranged opposite to each other, the first groove wall is arranged obliquely, and the inclination direction of the first groove wall is gradually approaching the side wall of the transmission shaft along the clockwise or counterclockwise rotation direction of the transmission shaft; The convex block is elastic, and when the transmission shaft is in a rotating state, the convex block is compressed, the top of the convex block abuts against the first groove wall, and the convex block slides along the first groove wall; When the transmission shaft is in a locked state, the protrusion is retracted and the side wall of the protrusion abuts against the second groove wall.

6. The anti-slip lock and fixation device for an external drainage tube according to claim 5, characterized in that: A spring is arranged at the bottom of the protrusion, a groove is arranged on the side wall of the transmission shaft, the spring is fixedly connected to the bottom of the groove, and the spring is used to make the protrusion extend out of and retract into the groove.

7. The anti-slip lock and fixation device for an external drainage tube according to claim 5, characterized in that: The convex block is made of elastic material and is fixedly connected to the side wall of the transmission shaft.

8. The anti-slip lock and fixation device for an external drainage tube according to claim 4, characterized in that: Scale lines are arranged on the surface of the top of the shell, and the scale lines are arranged corresponding to the locking grooves. When the transmission shaft is in a locked state, the scale lines are used to display the tightening force of the transmission shaft at this time.

9. The anti-slip lock and fixation device for an external drainage tube according to claim 1, characterized in that: The second fixing device comprises a first fixing plate and a second fixing plate, the first fixing plate is rotatably connected to the second fixing plate, and the second fixing plate can rotate towards or away from the first fixing plate; A fourth channel is provided between the first fixing plate and the second fixing plate. The fourth channel is used for the drainage tube to pass therethrough. When the first fixing plate and the second fixing plate are in contact with each other, the fourth channel is used for pressing the drainage tube.

10. The anti-slip lock and fixation device for an external drainage tube according to claim 4, characterized in that: A fourth opening is provided on the side wall of the dressing patch, a fifth opening is provided between the dressing patch and the shell, the fifth opening communicates with the dressing patch and the inside of the shell, and the first channel is formed in the space where the fourth opening communicates with the fifth opening; The fifth opening is located between the roller and the inner wall of the housing.

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