Application for in-vitro drainage tube and use method of application

Abstract

The invention relates to an application for an in-vitro drainage tube and a using method of the application. The application comprises an attaching part, a tilting part, a soft clamping groove and a rolling strip. The attaching part is used for attaching to the skin and comprises an annular attaching part and body surface attaching parts, and a gap is formed between every two adjacent body surface attaching parts; the tilting part is arc-shaped and is arranged in the gap, one side of the tilting part and the body surface fitting part or the annular fitting part have a common edge, and the other side of the tilting part tilts towards the direction far away from the skin surface; the pair of soft clamping grooves are symmetrically formed in the annular fitting part; the two ends of the rolling strip are in sliding connection with the pair of soft clamping grooves correspondingly. The drainage tube positioned above the application is connected with the rolling strip through a traction rope; when the drainage tube drives the rolling strip to slide along the soft clamping groove, the rolling strip smooths the upwarp part and fits the upwarp part to the skin. Only when the upwarp part is flattened by the rolling strip, the upwarp part can be attached to the skin, if the body position of a patient changes slightly or the activity amount of the patient is small, the upwarp part is still kept in an arc shape and does not adhere to the skin, and the contact area of the application and the skin can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an application for an extracorporeal drainage tube and a method of using the same. Background Art

[0002] The dressing can form an effective isolation barrier between the surrounding skin and is often used to fix drainage tubes. It can also be used to fix needles or indwelling needles to prevent needle displacement or dislocation. The dressing can form an isolation barrier between the drainage tube and the external environment, reduce the contamination of external bacteria, dust and other pollutants to the drainage tube and wound, and reduce the risk of infection. For example, it is used as a sterile dressing to fix the drainage tube after surgery.

[0003] Authorization announcement number: CN207838006 U, application date: 2017.05.31, utility model name is an extracorporeal fixing device for preventing drainage tube from being detached, and this utility model discloses an extracorporeal fixing device for preventing drainage tube from being detached. It includes an application, and the fixing device includes a first fixing device and a second fixing device; the first fixing device includes a first fixing plate, a first fixing sleeve, a first fixing lock or Velcro, and a through hole, the first fixing plate is seamlessly connected to the application, one end of the first fixing sleeve is seamlessly connected to the first fixing plate, the through hole connects the first fixing sleeve, the first fixing plate and the application, and the inner diameter of the through hole is equal to the outer diameter of the first fixing sleeve; the inner diameter of the first fixing sleeve is larger than the outer diameter of the drainage tube, and the first fixing lock or Velcro is arranged on the outside of the first fixing sleeve; the second fixing device includes a second fixing plate, a second fixing sleeve, a second fixing lock or Velcro, the second fixing plate is seamlessly connected to the application, and an outer side surface of the second fixing sleeve is seamlessly connected to the second fixing plate; there are one or more fixing devices. It has the advantage of preventing the drainage tube from being detached.

[0004] The above-mentioned prior art presses part of the extracorporeal drainage tube against the skin, which will form additional pressure on the skin, especially in the part where the bones protrude. The skin and subcutaneous tissue will be under greater pressure, resulting in obstruction of local blood circulation. When the pressure exceeds the tolerance of the skin and tissue, it will cause tissue ischemia and hypoxia, thereby increasing the risk of pressure sores.

[0005] In addition, the drainage tube passes through the first fixed sleeve and the second fixed sleeve in sequence, and the two fixed sleeves are locked by a fixed lock or Velcro, so that the drainage tube cannot move. When the patient's body position changes, the drainage tube cannot move and adjust accordingly, and the drainage tube may be twisted, folded or compressed, resulting in poor drainage. For example, when the patient lies on his side, the fixed drainage tube may be squeezed between the body and the bed surface, hindering the normal outflow of the drainage fluid, causing the drainage fluid to accumulate in the body, and increasing the risk of complications such as infection and pain. Summary of the invention

[0006] In view of the defects of the above-mentioned prior art that it is easy to cause pressure sores and hinder the normal outflow of drainage fluid, the purpose of the present invention is to provide a dressing in which the drainage tube can move slightly and does not directly contact the skin.

[0007] The technical solution provided by the present invention is:

[0008] A dressing for an extracorporeal drainage tube, comprising:

[0009] The fitting part is used to fit the skin, including an annular fitting part and a body surface fitting part, wherein the body surface fitting part is located inside the annular fitting part, and both ends of the body surface fitting part are integrally formed with the annular fitting part, and a gap is provided between adjacent body surface fitting parts;

[0010] A raised portion, which is arc-shaped and disposed in the gap, one side of which has a common edge with the body surface fitting portion or the annular fitting portion, and the other side of which is raised away from the skin surface;

[0011] A pair of soft card slots are symmetrically arranged at the edge of the annular bonding portion, and the soft card slots are substantially perpendicular to the common edge;

[0012] A rolling bar, the two ends of which are respectively slidably connected to a pair of soft card slots, the rolling bar can slide along the length direction of the soft card slots, and the drainage tube located above the fitting portion is connected to the rolling bar through a traction rope;

[0013] When the drainage tube drives the rolling strip to slide along the soft card slot, the rolling strip smoothes the raised portion and fits it to the skin.

[0014] Furthermore, the arc-shaped direction of the warping portion and the rolling strip are located on the same side of the fitting portion.

[0015] Furthermore, the common edge is provided with continuous or discontinuous notches in the length extension direction, and when an external force is applied, the raised portion maintaining the arc shape can be torn off along the notches.

[0016] Furthermore, along the rolling direction of the rolling strip, the length of the soft card slot is not less than the distance between the two raised portions at both ends.

[0017] Further, the warping portion includes an overlapping portion, and the overlapping portion is relatively far away from the common edge;

[0018] Along the extension direction of the common edge, the overlapping portion includes a first overlapping edge and a first side edge, and the projection of the first overlapping edge in the vertical direction is closer to the common edge of the tilting portion and the body surface bonding portion than the projection of the first side edge in the vertical direction.

[0019] Furthermore, the body surface fitting portion includes a second side edge, and when the tilted portion changes from a tilted state to a fitted state, the overlapping portion can be adhered to an adjacent body surface fitting portion, and the first overlapping edge roughly coincides with the second side edge, and the first side edge is located on the adjacent body surface fitting portion.

[0020] Further, the common edge is parallel to the second side edge, and the first overlapping edge is parallel to the first side edge.

[0021] Furthermore, the number of the body surface fitting parts is an odd number, and the body surface fitting parts include a central fitting part located at the center of the annular fitting part, and the raised parts on the left and right sides of the central fitting part are axially symmetrical.

[0022] Further, each of the soft card slots includes a first inner cavity and a second inner cavity adjacent to the first inner cavity, and the first inner cavity and the second inner cavity are physically isolated by a partition;

[0023] The first inner cavity is opposite to the warping portion on one side of the central fitting portion, and the second inner cavity is opposite to the warping portion on the other side of the central fitting portion;

[0024] The roller includes a first roller and a second roller. The first roller slides in the first inner cavity, and the second roller slides in the second inner cavity.

[0025] A method for applying an extracorporeal drainage tube, characterized in that the use steps are as follows:

[0026] Insert the drainage tube into the middle hole of the traction rope, and stick the fitting part to the skin;

[0027] When the patient changes his position or moves his body, the drainage tube moves, and the drainage tube drives the rolling strip to slide along the soft card slot. When passing through the raised part, the raised part is smoothed and made to fit the skin;

[0028] During the bonding process, the raised portion is partially adhered to the adjacent body surface bonding portion;

[0029] After the drain is removed, remove the dressing.

[0030] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0031] (1) The patch of the present invention is provided with a raised portion, which will adhere to the skin only when it is smoothed by the rolling strip. If the patient's body position changes less or the amount of activity is less, the raised portion will still maintain an arc shape and will not adhere to the skin, which can effectively reduce the contact area between the patch and the skin and reduce the pulling of the skin when the patch is torn off, which helps to reduce the occurrence of irritation reactions such as skin redness, itching, and rash, and allows more skin to be exposed to the air.

[0032] (2) The common edge of the lifting portion and the body surface contact portion of the present invention is provided with continuous or discontinuous notches. If the lifting portion maintains an arc shape, when the drainage tube is removed and the dressing is ready to be torn off, the lifting portion can be easily torn off along the notches first, so as to avoid accidentally touching the contact portion due to hand movements when tearing off the contact portion, and the lifting portion will be attached to the skin instead.

[0033] (3) The drainage tube of the present invention is placed above the dressing to avoid contact between the drainage tube and the skin, effectively preventing the occurrence of pressure sores. The dressing itself has a certain isolation effect. Placing the drainage tube above the dressing can form an additional barrier between the drainage tube and the skin, effectively blocking bacteria, dust and other pollutants in the outside air, reducing the possibility of bacteria entering the human body through the contact between the drainage tube and the skin, thereby reducing the chance of infection.

[0034] (4) The extracorporeal drainage tube of the present invention can move slightly, so when the patient's body position changes, it can still automatically adjust to a position that is relatively more conducive to drainage according to the flow direction of the fluid in the body cavity and the effect of gravity, thereby ensuring smooth drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall structure of the application in one embodiment of the present application;

[0036] Figure 2 This is a schematic diagram of the structure of the warping portion in one embodiment of the present application;

[0037] Figure 3 This is a schematic diagram of the structure of the body surface fitting portion in one embodiment of the present application;

[0038] Figure 4 This is a cross-sectional view of an application in one embodiment of the present application;

[0039] Figure 5 This is a schematic diagram of bending application in one embodiment of the present application;

[0040] Figure 6 This is a schematic diagram of the soft card slot structure in one embodiment of the present application;

[0041] Figure 7 This is a schematic diagram of another application structure in an embodiment of the present application;

[0042] Figure 8 This is a schematic diagram of a common edge and a second side edge in an embodiment of the present application;

[0043] Fig. 9 This is a schematic diagram of a portion of the application being flattened in one embodiment of the present application;

[0044] Fig.10 This is a schematic diagram of the application bottom in one embodiment of the present application.

[0045] Explanation of the symbols in the schematic diagram:

[0046] Circumferential bonding portion 1;

[0047] Body surface fitting portion 2, common edge 21, second side edge 22;

[0048] The warping portion 3, the first overlapping edge 31, and the first side edge 32;

[0049] Soft card slot 4, first inner cavity 41, second inner cavity 42, partition 43;

[0050] Roller bar 5, first roller bar 51, second roller bar 52;

[0051] Drainage tube 6;

[0052] Traction rope 7, middle hole 70, first connecting rope 71, second connecting rope 72. DETAILED DESCRIPTION

[0053] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0054] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0055] Example 1

[0056] Drainage tubes are widely used in internal medicine and surgery. They are mainly used to drain accumulated fluid, blood, pus, etc. between human tissues or in body cavities out of the body to promote wound healing, prevent infection, etc.

[0057] The present application discloses a dressing for an extracorporeal drainage tube, comprising a fitting portion, a tilting portion 3, a soft card slot 4 and a rolling strip 5. The fitting portion comprises an annular fitting portion 1 and a body surface fitting portion 2. The annular fitting portion 1 is preferably square or elliptical. When the annular fitting portion 1 is square, its four corners are preferably arcs. Compared with traditional right-angle dressings, the arc-shaped corners have no sharp edges, which can significantly reduce the friction between the patient and the skin during the patient's activities.

[0058] In addition, the right-angled corners of the patch are prone to warping when subjected to slight external force, and the warped corners may further pull the skin and cause skin damage. The rounded corners can better maintain contact with the skin and are less likely to warp. The right-angled corners of the patch are prone to forming sanitary dead corners, leading to bacterial accumulation, while the four-corner rounded patch has no obvious dead corners, the surface is smoother, and it is easier to wipe in place when cleaning.

[0059] The annular bonding part 1 is hollow, the body surface bonding part 2 is located inside the hollow of the annular bonding part 1, and both ends of the body surface bonding part 2 are connected to the annular bonding part 1, preferably integrally formed. The advantage of integrally formed is that when the patch needs to be torn off, the connection between the annular bonding part 1 and the body surface bonding part 2 is not easy to break, thereby improving the success rate and efficiency. The body surface bonding parts 2 are arranged at intervals, and there is a gap between two adjacent body surface bonding parts 2.

[0060] The raised portion 3 has an arc-shaped cross-section and is disposed in the gap between two adjacent body surface bonding portions 2. One side edge of the raised portion 3 overlaps and is shared with one side edge of the body surface bonding portion 2, and the shared edge is a common edge 21. The other side edge of the raised portion is raised upwardly of the application, specifically, is raised away from the skin surface.

[0061] It is worth noting that the arc of the tilting portion 3 is oriented on the same side of the fitting portion as the rolling strip 5, and this arc has a special angle, and the specific features are as follows: the tilting portion 3 includes an overlapping portion, and the overlapping portion is relatively far away from the common edge 21. Along the extension direction of the common edge 21, the overlapping portion includes a first overlapping edge 31 and a first side edge 32, that is, the first overlapping edge 31 and the first side edge 32 are parallel to the common edge 21, and the projection of the first overlapping edge 31 in the vertical direction is closer to the common edge 21 of the tilting portion 3 and the body surface fitting portion 2 than the projection of the first side edge 32 in the vertical direction.

[0062] In other words, the arc is preferably a circular arc, and the arc angle is not greater than 90 degrees, that is, the raised portion of the raised portion 3 will not curl. Since the lower surface of the fitting portion and the arc-shaped outer surface of the raised portion are both adhered with pressure-sensitive adhesive, if the raised portion curls, the pressure-sensitive adhesive at the curled portion is likely to stick to clothing or other objects such as drainage tubes.

[0063] The common edge 21 is provided with continuous or discontinuous notches along the length extension direction, and the notches form a relatively weak area at the common edge 21, and when an external force is applied, the warping portion can be easily torn off along the weak edge where the notches are located. The weak area can be formed in a variety of ways, such as notches, embossing, and serrated structures, as long as it is convenient for the warping portion 3 to be torn off.

[0064] A pair of soft card slots 4 are symmetrically arranged at the edge of the annular bonding portion 1, and the soft card slots 4 are substantially perpendicular to the common edge 21. The body surface bonding portion 2 is preferably in a long strip shape, that is, the soft card slots 4 and the body surface bonding portion 2 are perpendicular to each other.

[0065] The two ends of the rolling strip 5 are respectively slidably connected with a pair of soft card slots 4, and the rolling strip 5 can slide along the length direction of the soft card slot 4. The drainage tube 6 is located above the application, that is, away from the skin surface and does not contact the skin surface. The drainage tube 6 can move slightly and is connected to the rolling strip 5 through a traction rope.

[0066] When the drainage tube 6 drives the rolling strip 5 to slide along the soft card slot 4, the raised portion 3 is smoothed by the rolling strip 5 and fits on the skin along the sliding direction of the rolling strip 5. It is worth noting that during the smoothing of the raised portion 3, a certain gap is always maintained between the rolling strip 5 and the raised portion 3 perpendicular to the direction of the fitting portion, and the gap is no more than 1 cm, so as to avoid squeezing or compressing the skin during the process of the raised portion 3 fitting on the skin, thereby reducing the discomfort of the patient.

[0067] The length of the soft card slot 4 is not less than the distance between the two warping portions 3 at both ends, that is, each warping portion 3 may be smoothed by the rolling strip 5 .

[0068] The body surface contact part 2 includes a second side edge 22. When the tilting part 3 changes from the tilting state to the skin contact state, the overlapping part is attached to the side of the adjacent body surface contact part 2, specifically, to the upper side of the adjacent body surface contact part 2. The first overlapping edge 31 roughly coincides with the second side edge 22. The first side edge 32 is located on the adjacent body surface contact part 2. Specifically, the first side edge 32 is located between the common edge 21 of the body surface contact part 2 and the second side edge 22. Along the length extension direction of the soft card slot 4, the overlapping width of the overlapping part and the body surface contact part 2 is not less than 1.5 cm.

[0069] The above-mentioned adjacent body surface bonding portion 2 does not refer to the body surface bonding portion 2 having a common edge with the tilted portion 3. Assuming that the body surface bonding portion 2 having a common edge is located on the left side of the tilted portion 3, the adjacent body surface bonding portion 2 is located on the right side of the tilted portion 3. Along the rolling direction of the roller 5, part of the tilted portion 3 is pressed onto the upper side of the adjacent body surface bonding portion 2.

[0070] The most obvious advantage of this overlapping method is that it can effectively reduce the pulling on the skin when the patch is removed, reducing the risk of pain, redness or even damage to the skin due to sudden force. This advantage is especially obvious for people with sensitive skin or when the skin is in the healing stage.

[0071] The overlapping part increases the connection strength and stability of the patch as a whole. During the tearing process, even if there is a certain amount of resistance or uneven external force, the patch is not likely to break. Once the patch breaks, the remaining part may be more difficult to tear off, and some glue may remain on the skin. The overlapping design can effectively avoid this problem.

[0072] The raised portion 3 is square after being flattened. Preferably, the first overlapping edge 31 and the first side edge 32 of the overlapping portion are parallel to each other; the common edge 21 and the second side edge 22 of the body surface fitting portion 2 are also parallel to each other.

[0073] In this embodiment, one soft rolling strip 5 is provided, and the arc-shaped directions of the warping portions 3 are consistent.

[0074] Example 2

[0075] The present embodiment is a dressing for an extracorporeal drainage tube, and its basic structure is the same as that of Embodiment 1, except that the number of body surface fitting portions 2 is preferably an odd number, and the body surface fitting portion 2 includes a central fitting portion 23 located at the center of the annular fitting portion 1, and the raised portions 3 on the left and right sides of the central fitting portion 23 are axially symmetrical.

[0076] Correspondingly, each soft card slot 4 includes a first inner cavity 41 and a second inner cavity 42 adjacent to the first inner cavity 41, and the first inner cavity 41 and the second inner cavity 42 are physically isolated by a partition 43. The size of the first inner cavity 41 is consistent with that of the second inner cavity 42.

[0077] The first inner cavity 41 is opposite to the warping portion 3 on one side of the central fitting portion 23, and the second inner cavity 42 is opposite to the warping portion 3 on the other side of the central fitting portion 23. The rolling strip 5 includes a first rolling strip 51 and a second rolling strip 52. The first rolling strip 51 slides in the first inner cavity 41, and the second rolling strip 52 slides in the second inner cavity 42. The drainage tube 6 is connected to the first rolling strip 51 and the second rolling strip 52 respectively through the traction rope 7.

[0078] More specifically, a traction rope 7 is tied to each end of the drainage tube 6. The traction rope 7 includes a middle hole 70 for the drainage tube 6 to pass through. The hole diameter of the middle hole 70 is slightly larger than the outer diameter of the drainage tube 6. A first connecting rope 71 and a second connecting rope 72 of equal length are connected to the bottom of the middle hole 70. The first connecting rope 71 is connected to the first roller 51, and the second connecting rope 72 is connected to the second roller 52.

[0079] The drainage tube 6 drives the first roller 51 or the second roller 52 to slide through the two traction ropes 7, so that the sliding process is smoother and more stable.

[0080] It is worth noting that the extracorporeal drainage tube 6 can move slightly, which has certain advantages.

[0081] Patients need to change their positions frequently after surgery to ensure comfort and prevent complications such as pressure sores. The small movement of the distal end of the external drainage tube 6 can automatically adjust to a relatively more conducive position for drainage according to the flow direction of the fluid in the body cavity and the effect of gravity when the patient's position changes, ensuring smooth drainage. For example, during chest drainage, when the patient changes from a supine position to a semi-recumbent position, the drainage tube can move slightly accordingly to maintain effective drainage of the pleural effusion.

[0082] In addition, physiological activities such as human breathing and organ peristalsis can cause changes in the pressure and fluid distribution in the body cavity. Small movements of the extracorporeal drainage tube can adapt to these changes, better adapt to the dynamic environment in the body cavity, make the drainage process more in line with the physiological state, and improve drainage efficiency. Taking abdominal drainage as an example, when the gastrointestinal tract moves, the drainage tube can move slightly with it, which can better drain exudates from different parts of the abdominal cavity.

[0083] When the patient moves or is subjected to slight external force, the fixed drainage tube may generate relatively large pulling stress on the surrounding tissues, while the drainage tube 6 used outside the body can move slightly and play a certain buffering role, reducing excessive pulling on surrounding tissues such as blood vessels, nerves, and organs, thereby reducing the risk of tissue damage and facilitating postoperative recovery.

[0084] The drainage fluid may contain blood, pus, tissue debris and other components, which are easy to precipitate and accumulate in the drainage tube 6, causing blockage. The small movement of the drainage tube 6 can cause a certain change in the flow state of the liquid in the tube, reduce the accumulation of sediment in the local area, reduce the possibility of drainage tube blockage, and keep the drainage channel unobstructed.

[0085] When the extracorporeal drainage tube 6 changes position due to a small movement, if the poor drainage is caused by the tube end being attached to the tissue or wrapped by the tissue, the small movement may cause the tube end to move away from the original unfavorable position, regain an unobstructed drainage path, and restore normal drainage function.

[0086] In addition, it is worth mentioning that the dressing designed for extracorporeal drainage tubes in the present application places the drainage tube 6 above the dressing to avoid contact between the drainage tube 6 and the skin, thereby effectively avoiding the occurrence of pressure sores.

[0087] Pressure sores, also known as pressure ulcers and bedsores, are caused by long-term pressure on local body tissues, blood circulation disorders, continuous ischemia and hypoxia of local tissues, and nutrient deficiencies, which cause the skin to lose its normal function and lead to tissue damage and necrosis. In the prior art, drainage tubes are generally fixed to the skin surface with ordinary dressings. During the placement and fixation of the drainage tubes, additional pressure may be applied to the local skin. Especially when the drainage tube is fixed too tightly, or when the patient needs to stay in bed for a long time, the contact area between the drainage tube and the skin is continuously under pressure, which will affect the local blood circulation, leading to tissue ischemia and hypoxia, and increasing the possibility of pressure sores. The technical solution proposed in this application can avoid this problem.

[0088] A method of applying a patch for an extracorporeal drainage tube of the present application is as follows:

[0089] The drainage tube 6 is inserted into the middle sleeve hole 70, and the fitting part is attached to the skin;

[0090] When the patient changes his position or moves his body, the drainage tube 6 moves slightly, and the drainage tube 6 drives the rolling strip 5 to slide along the soft card slot 4. During the sliding process of the rolling strip 5, if it passes through the raised portion 3, the raised portion 3 is smoothed to make it fit the skin;

[0091] During the bonding process, the raised portion 3 is partially bonded to the adjacent body surface bonding portion 2;

[0092] After the drainage tube 6 is removed, the dressing can be torn off.

[0093] Conventional patches in the prior art will slightly pull the skin when they are torn off due to their certain stickiness to the skin, especially in areas with more hair, where the hair may feel pulled. The technical solution of the present application reduces the contact area between the patch and the skin, thereby reducing the pulling on the skin when the patch is torn off; it helps to reduce the occurrence of irritation reactions such as skin redness, itching, and rash; it allows more skin to be exposed to the air, which is beneficial for sweat evaporation and oxygen entry, allowing the skin to breathe more smoothly, and preventing the skin from becoming damp and white due to long-term airtightness. This advantage is even more obvious when the patch is used for a long time.

[0094] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A dressing for an extracorporeal drainage tube, characterized in that: include: A fitting portion, which is used to fit the skin, comprising an annular fitting portion (1) and a body surface fitting portion (2), wherein the body surface fitting portion (2) is located inside the annular fitting portion (1), and both ends of the body surface fitting portion (2) are integrally formed with the annular fitting portion (1), and a gap is provided between adjacent body surface fitting portions (2); A raised portion (3), the raised portion (3) is arc-shaped and is disposed in the gap, one side of the raised portion (3) having a common edge (21) with the body surface contact portion (2) or the annular contact portion (1), and the other side of the raised portion (3) being raised in a direction away from the skin surface; A pair of soft card slots (4) are symmetrically arranged at the edge of the annular bonding portion (1), and the soft card slots (4) are substantially perpendicular to the common edge (21); A rolling strip (5), the two ends of which are respectively slidably connected to a pair of soft card slots (4), the rolling strip (5) being able to slide along the length direction of the soft card slots (4), and a drainage tube (6) located above the fitting portion being connected to the rolling strip (5) via a traction rope (7); When the drainage tube (6) drives the rolling strip (5) to slide along the soft card slot (4), the rolling strip (5) smoothes the raised portion (3) and makes it fit the skin.

2. The dressing for extracorporeal drainage tube according to claim 1, characterized in that: The arc shape of the raised portion (3) is oriented toward the same side of the fitting portion as the rolling strip (5).

3. The dressing for extracorporeal drainage tube according to claim 1, characterized in that: The common edge (21) is provided with continuous or discontinuous notches along the length extension direction, and when an external force is applied, the arc-shaped raised portion (3) can be torn off along the notches.

4. The dressing for extracorporeal drainage tube according to claim 1, characterized in that: Along the rolling direction of the rolling strip (5), the length of the soft card slot (4) is not less than the distance between the two raised portions (3) at both ends.

5. The dressing for extracorporeal drainage tube according to claim 1, characterized in that: The raised portion (3) comprises an overlapping portion, and the overlapping portion is relatively far away from the common edge (21); Along the extension direction of the common edge (21), the overlapping portion includes a first overlapping edge (31) and a first side edge (32), and the projection of the first overlapping edge (31) in the vertical direction is closer to the common edge (21) of the raised portion (3) and the body surface bonding portion (2) than the projection of the first side edge (32) in the vertical direction.

6. The dressing for extracorporeal drainage tube according to claim 5, characterized in that: The body surface bonding portion (2) includes a second side edge (22); when the tilted portion (3) changes from a tilted state to a bonded state, the overlapping portion can be adhered to the adjacent body surface bonding portion (2), and the first overlapping edge (31) roughly coincides with the second side edge (22), and the first side edge (32) is located on the adjacent body surface bonding portion (2).

7. The dressing for extracorporeal drainage tube according to claim 6, characterized in that: The common edge (21) is parallel to the second side edge (22), and the first overlapping edge (31) is parallel to the first side edge (32).

8. The dressing for extracorporeal drainage tube according to claim 1, characterized in that: The number of the body surface fitting parts (2) is an odd number, and the body surface fitting parts (2) include a central fitting part (23) located at the center of the annular fitting part (1), and the raised parts (3) on the left and right sides of the central fitting part (23) are axially symmetrical.

9. The dressing for extracorporeal drainage tube according to claim 8, characterized in that: Each of the soft card slots (4) comprises a first inner cavity (41) and a second inner cavity (42) adjacent to the first inner cavity (41), wherein the first inner cavity (41) and the second inner cavity (42) are physically isolated by a partition (43); The first inner cavity (41) is opposite to the raised portion (3) on one side of the central fitting portion (23), and the second inner cavity (42) is opposite to the raised portion (3) on the other side of the central fitting portion (23); The rolling strip (5) comprises a first rolling strip (51) and a second rolling strip (52); the first rolling strip (51) slides in the first inner cavity (41), and the second rolling strip (52) slides in the second inner cavity (42).

10. A method for using a dressing for an extracorporeal drainage tube, comprising the dressing according to any one of claims 1 to 9, characterized in that: The steps to use are as follows: Insert the drainage tube into the middle hole of the traction rope, and stick the fitting part to the skin; When the patient changes his position or moves his body, the drainage tube moves, and the drainage tube drives the rolling strip to slide along the soft card slot. When passing through the raised part, the raised part is smoothed and made to fit the skin; During the bonding process, the raised portion is partially adhered to the adjacent body surface bonding portion; After the drain is removed, remove the dressing.

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