Surgical patch

Abstract

The utility model discloses a surgical film belongs to medical instrument technical field, and this surgical film includes film body, liquid baffle and negative pressure aspirator, and film body has the operation field through -hole and opposite adhesive surface and operating surface, and the operation field through -hole is through adhesive surface and operating surface, and liquid baffle is around and links to each other with operating surface in the outside of operation field through -hole, and liquid baffle and operating surface jointly define the liquid baffle groove, and liquid baffle has suction passage and suction hole, and suction passage is communicated with liquid baffle groove through suction hole, and negative pressure aspirator is communicated with suction passage, and negative pressure aspirator is used for drawing negative pressure to suction passage, and liquid baffle can prevent the diffusion of tissue exudate, irrigation fluid and other liquids to the skin around the operating table and the patient's operation area, and the suction passage of liquid baffle draws negative pressure by negative pressure aspirator, to realize the water absorption function of surgical film, can avoid the accumulation of liquid in the operation area, thereby can reduce the risk of liquid interfering with the operation field, and is convenient for the smooth operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a surgical patch. Background Technology

[0002] Minimally invasive spinal surgery requires extremely high precision. During the operation, irrigation fluid is frequently used to maintain a clear surgical field and remove tissue debris. At the same time, tissue exudate will also be generated from the surgical wound. Irrigation fluid, tissue exudate and other fluids can easily accumulate in the surgical area, which not only interferes with the surgical field of vision, but also may contaminate the operating table and cause serious consequences such as infection in the patient if it leaks out. Utility Model Content

[0003] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a surgical film that can prevent tissue exudate, irrigation fluid, and other liquids from spreading to the operating table and the skin around the patient's surgical area, and can prevent liquid accumulation in the surgical area.

[0004] A surgical dressing according to an embodiment of the present invention includes: a dressing body, a liquid-blocking strip, and a negative pressure suction device. The dressing body has a surgical field through-hole and opposing adhesive and operating surfaces. The surgical field through-hole penetrates the adhesive and operating surfaces. The liquid-blocking strip is wrapped around the outside of the surgical field through-hole and connected to the operating surface. The liquid-blocking strip and the operating surface together define a liquid-blocking groove. The liquid-blocking strip has a suction channel and a suction hole. The suction channel communicates with the liquid-blocking groove through the suction hole. The negative pressure suction device communicates with the suction channel and is used to draw negative pressure from the suction channel.

[0005] According to the embodiments of the present invention, the surgical film has a liquid-blocking strip that can prevent tissue exudate, irrigation fluid and other liquids from spreading to the operating table and the skin around the patient's surgical area. The negative pressure suction device of the surgical film can draw negative pressure on the suction channel of the liquid-blocking strip to realize the water absorption function of the surgical film, which can prevent liquid from accumulating in the surgical area, thereby reducing the risk of liquid interfering with the surgical field of vision and facilitating the smooth progress of the operation.

[0006] According to some embodiments of this utility model, the end of the suction hole that communicates with the liquid-blocking groove is the suction inlet, the end of the suction hole that communicates with the suction channel is the suction outlet, and the distance between the suction inlet and the film body is less than the distance between the suction outlet and the film body.

[0007] According to some embodiments of the present invention, there are multiple suction holes, and the multiple suction holes are arranged at intervals along the length direction of the liquid-blocking strip.

[0008] According to some embodiments of this utility model, the liquid-blocking strip is welded to the film body.

[0009] According to some embodiments of the present invention, the liquid-blocking strip and the film body are provided with reinforcing ribs at the edge of the connection.

[0010] According to some embodiments of the present invention, the liquid-blocking groove has a first groove and a second groove, the first groove is opposite to the operating surface, and the second groove is located between the two ends of the liquid-blocking strip along its length.

[0011] According to some embodiments of the present invention, the liquid-blocking strip includes: a first sub-liquid-blocking strip, a second sub-liquid-blocking strip, and a third sub-liquid-blocking strip. The first sub-liquid-blocking strip and the third sub-liquid-blocking strip are arranged in parallel. One end of the first sub-liquid-blocking strip and one end of the third sub-liquid-blocking strip are both connected to the second sub-liquid-blocking strip. The other end of the first sub-liquid-blocking strip and the other end of the third sub-liquid-blocking strip form the second groove.

[0012] According to some embodiments of the present invention, the surgical patch further includes a fluid guiding bag, which is flexibly connected to the patch body, and the inlet of the fluid guiding bag is adjacent to the second groove.

[0013] According to some embodiments of the present invention, the surgical patch further includes a counterweight block, which is connected to the fluid guiding bag.

[0014] According to some embodiments of the present invention, the surgical film further includes a protective paper, which is bonded to the adhesive surface.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a surgical dressing according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of the liquid-blocking strip, the film body, and the reinforcing rib according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of a liquid-blocking strip according to an embodiment of the present utility model.

[0019] Figure label:

[0020] 1. Adhesive film body; 11. Surgical field through-hole; 12. Operating surface;

[0021] 2. Liquid-retaining strip; 21. Suction channel; 22. Suction hole; 221. Suction inlet; 222. Suction outlet; 23. Inner wall; 24. First sub-liquid-retaining strip; 25. Second sub-liquid-retaining strip; 26. Third sub-liquid-retaining strip;

[0022] Reinforcing rib 3;

[0023] Liquid drainage bag 4; Outlet bag 41; Drainage bag 42;

[0024] 5. Counterweight; 6. Suction connector;

[0025] Liquid-retaining groove 7; First groove opening 71; Second groove opening 72;

[0026] Surgical film 10. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The following is combined with Figures 1-3 Detailed description of the surgical patch 10 according to an embodiment of the present invention.

[0032] Reference Figure 1 As shown, the surgical patch 10 according to an embodiment of the present invention includes: a patch body 1, a liquid-blocking strip 2, and a negative pressure suction device. The patch body 1 has a surgical field through-hole 11 and an adhesive surface and an operating surface 12 facing away from each other. The surgical field through-hole 11 penetrates the adhesive surface and the operating surface 12. The liquid-blocking strip 2 is wrapped around the outside of the surgical field through-hole 11 and connected to the operating surface 12. The liquid-blocking strip 2 and the operating surface 12 together define a liquid-blocking groove 7. The liquid-blocking strip 2 has a suction channel 21 and a suction hole 22. The suction channel 21 is connected to the liquid-blocking groove 7 through the suction hole 22. The negative pressure suction device is connected to the suction channel 21 and is used to draw negative pressure from the suction channel 21.

[0033] It should be noted that the surgical film 10 can be used in minimally invasive surgery to isolate the skin around the surgical area, prevent bacteria on the skin surface from entering the surgical area, maintain a sterile environment in the surgical area, and help reduce the risk of infection.

[0034] Understandably, the adhesive surface of the patch body 1 is suitable for bonding with the patient's skin, and the surgical field through-hole 11 is suitable for being set opposite to the patient's surgical area so that medical staff can perform surgical operations in the surgical area. The liquid-blocking strip 2 is wrapped around the outside of the surgical field through-hole 11 to prevent tissue exudate, irrigation fluid and other liquids from spreading out of the liquid-blocking groove 7, and to prevent liquid from contaminating the operating table and the skin around the patient's surgical area.

[0035] The negative pressure suction device draws negative pressure into the suction channel 21, which reduces the air pressure inside the suction channel 21 to create a negative pressure environment. When there is liquid in the liquid-retaining groove 7, under the suction effect of the negative pressure in the suction channel 21, the liquid is drawn into the suction channel 21 through the suction hole 22, so as to remove the liquid in the liquid-retaining groove 7 in time, realize the water absorption function of the surgical film 10, reduce the risk of liquid accumulation in the surgical area, maintain a clear surgical field of vision, and ensure that medical staff can clearly see the surgical area when performing surgical operations. This helps to ensure the accuracy of medical staff's operations, reduce the risk of surgical errors caused by obstructed vision, and facilitate the smooth progress of the operation.

[0036] The negative pressure suction device can be a pump, which may include a motor and an impeller. The impeller is driven to rotate by the motor, which can discharge the air in the suction channel 21 to create a negative pressure environment in the suction channel 21.

[0037] According to the embodiment of the present invention, the surgical patch 10 has a liquid-blocking strip 2 that can prevent tissue exudate, irrigation fluid and other liquids from spreading to the operating table and the skin around the patient's surgical area. The negative pressure suction device of the surgical patch 10 can draw negative pressure on the suction channel 21 of the liquid-blocking strip 2 to realize the water absorption function of the surgical patch 10, which can prevent liquid from accumulating in the surgical area, thereby reducing the risk of liquid interfering with the surgical field of vision and facilitating the smooth progress of the operation.

[0038] In some embodiments of this utility model, reference is made to Figure 2 As shown, the end of the suction hole 22 that is connected to the liquid-blocking groove 7 is the suction inlet 221, and the end of the suction hole 22 that is connected to the suction channel 21 is the suction outlet 222. The distance between the suction inlet 221 and the film body 1 is less than the distance between the suction outlet 222 and the film body 1.

[0039] It is understandable that the distance between the suction inlet 221 and the film-applying body 1 is less than the distance between the suction outlet 222 and the film-applying body 1. In other words, in... Figure 2 In the vertical direction, the height of the suction inlet 221 is lower than that of the suction outlet 222. The lower height of the suction inlet 221 allows the liquid in the liquid-retaining groove 7 to be promptly drawn away through the suction inlet 221 under the negative pressure action of the negative pressure suction device on the suction channel 21, thus preventing the liquid from accumulating in the liquid-retaining groove 7 and reducing the impact of the liquid on the surgical field, thereby facilitating the smooth progress of the operation.

[0040] In some embodiments of this utility model, reference is made to Figure 2 As shown, the sidewall of the liquid-blocking strip 2 facing the liquid-blocking groove 7 is the inner sidewall 23, and the suction hole 22 is located on the side of the inner sidewall 23 closer to the film body 1. That is to say, in Figure 2 and Figure 3 In the vertical direction, the suction hole 22 is located on the lower side of the inner wall 23 to further reduce the height of the suction inlet 221, so that the liquid in the liquid-blocking groove 7 can be sucked away by the suction inlet 221 in time, which can effectively prevent the liquid from accumulating in the liquid-blocking groove 7, reduce the impact of the liquid on the surgical field, and thus facilitate the smooth progress of the operation.

[0041] In some embodiments of this utility model, reference is made to Figure 3 As shown, there are multiple suction holes 22. Along the length of the liquid-blocking strip 2, multiple suction holes 22 are arranged at intervals, which can further reduce the risk of liquid accumulation in the liquid-blocking groove 7 and facilitate the smooth progress of the operation.

[0042] Understandably, multiple suction holes 22 can increase the flow area of ​​liquid. When there is liquid in the liquid-blocking groove 7 and the negative pressure suction device draws negative pressure on the suction channel 21, the liquid can be drawn into the suction channel 21 by multiple suction holes 22 to quickly remove the liquid in the liquid-blocking groove 7, avoid the accumulation of liquid in the liquid-blocking groove 7, and help maintain a clear surgical field of vision, so as to facilitate the smooth progress of the operation. In addition, multiple suction holes 22 are arranged at intervals along the length direction of the liquid-blocking strip 2, and each suction hole 22 can perform liquid suction at different positions, which can reduce the risk of local liquid accumulation in the liquid-blocking groove 7 and further help maintain a clear surgical field of vision.

[0043] In some embodiments of this utility model, the liquid-blocking strip 2 is welded to the film body 1, which helps to ensure the sealing between the liquid-blocking strip 2 and the film body 1, and prevents liquid from flowing out directly through the gap between the liquid-blocking strip 2 and the film body 1. The liquid-blocking strip 2 can effectively block the liquid from flowing to other parts of the patient's body, reducing the chance of postoperative infection. At the same time, the liquid-blocking strip 2 can also effectively prevent the liquid from spreading to the operating table, which can maintain the operating table environment dry and clean, and facilitate the orderly placement and operation of surgical instruments.

[0044] The welding process can be hot melt welding, which can achieve a seamless connection between the liquid-blocking strip 2 and the film body 1, so as to ensure that the liquid will not leak at the connection between the liquid-blocking strip 2 and the film body 1.

[0045] In some embodiments of this utility model, reference is made to Figure 2 As shown, the edge of the connection between the liquid-blocking strip 2 and the film body 1 is provided with reinforcing ribs 3, which helps to improve the connection strength between the liquid-blocking strip 2 and the film body 1, and can reduce the risk of the liquid-blocking strip 2 separating from the film body 1 due to external force. At the same time, the reinforcing ribs 3 can support the liquid-blocking strip 2, improve the overall structural strength of the liquid-blocking strip 2 and the film body 1, reduce the risk of the liquid-blocking strip 2 collapsing due to external force, and help to ensure the water-blocking function of the liquid-blocking strip 2.

[0046] When the liquid-blocking strip 2 is welded to the film body 1, structural adhesive can be applied to the edge of the connection between the liquid-blocking strip 2 and the film body 1 to form a reinforcing rib 3.

[0047] In some embodiments of this utility model, reference is made to Figure 1 As shown, the liquid-retaining groove 7 has a first groove 71 and a second groove 72. The first groove 71 is opposite to the operating surface 12, and the second groove 72 is located between the two ends of the liquid-retaining strip 2 in the length direction.

[0048] Understandably, the first slot 71 is opposite to the operating surface 12 so that medical staff can observe the surgical area. When a large amount of liquid appears in the liquid-blocking slot 7, the liquid can flow out directly through the second slot 72 in a timely manner, avoiding the accumulation of liquid in the liquid-blocking slot 7, thereby reducing the impact of liquid on the surgical field of vision and ensuring that medical staff can clearly see the surgical area when performing surgical operations. This helps to ensure the accuracy of medical staff's operations, reduce the risk of surgical errors due to obstructed vision, and facilitate the smooth progress of the operation.

[0049] The second slot 72 can be oriented towards medical staff, which can reduce the risk of medical staff interfering with the liquid-blocking strip 2 during surgical operations, so as to facilitate the smooth progress of the operation.

[0050] In some embodiments of this utility model, reference is made to Figure 1 As shown, the liquid-blocking strip 2 includes: a first sub-liquid-blocking strip 24, a second sub-liquid-blocking strip 25, and a third sub-liquid-blocking strip 26. The first sub-liquid-blocking strip 24 and the third sub-liquid-blocking strip 26 are arranged in parallel. One end of the first sub-liquid-blocking strip 24 and one end of the third sub-liquid-blocking strip 26 are connected to the second sub-liquid-blocking strip 25. The other end of the first sub-liquid-blocking strip 24 and the other end of the third sub-liquid-blocking strip 26 form a second groove 72.

[0051] Understandably, referring to Figure 1 As shown, the liquid-blocking strip 2 is constructed as a "U"-shaped strip. The first sub-liquid-blocking strip 24 is located on the left side of the surgical field through-hole 11 to block liquid on the left side of the surgical field through-hole 11. The second sub-liquid-blocking strip 25 is located on the front side of the surgical field through-hole 11 to block liquid on the front side of the surgical field through-hole 11. The third sub-liquid-blocking strip 26 is located on the right side of the surgical field through-hole 11 to block liquid on the right side of the surgical field through-hole 11. In other words, the liquid-blocking strip 2 can block liquid in multiple directions outside the surgical field through-hole 11, which can effectively prevent the liquid in the liquid-blocking groove 7 from flowing to other parts of the patient's body and block the liquid from spreading to the operating table.

[0052] In some embodiments of this utility model, reference is made to Figure 1 As shown, the surgical patch 10 also includes a fluid guide bag 4, which is flexibly connected to the patch body 1. The inlet of the fluid guide bag 4 is adjacent to the second slot 72. The fluid guide bag 4 can guide the liquid flowing out of the second slot 72 and direct the liquid to a collection device for collecting the liquid.

[0053] It is understandable that the liquid guiding bag 4 is flexibly connected to the film body 1 so as to flexibly adjust the position of the liquid guiding bag 4 and facilitate adjusting the outlet of the liquid guiding bag 4 to connect with the inlet of the collection device.

[0054] The collection device can be a bucket, basin, etc., and the negative pressure suction device can be connected to the collection device through a connecting tube. The collection device can collect the liquid generated during the operation so that the liquid can be treated uniformly.

[0055] In some embodiments of this utility model, reference is made to Figure 1 As shown, the surgical patch 10 also includes a counterweight 5, which is connected to the drainage bag 4. The counterweight 5 allows the drainage bag 4 to hang down naturally under the action of gravity, and the increased weight of the counterweight 5 reduces the risk of the drainage bag 4 shaking, so that the liquid can flow to the collection device under the action of gravity.

[0056] In some embodiments of this utility model, reference is made to Figure 1 As shown, the liquid guiding bag 4 may include an outlet bag 41 and a flow guiding bag 42. The inlet of the outlet bag 41 is the inlet of the liquid guiding bag 4 and is adjacent to the second slot 72. The outlet of the outlet bag 41 is connected to the inlet of the flow guiding bag 42, and the outlet of the flow guiding bag 42 is the outlet of the liquid guiding bag 4 and is connected to the collection device. The outlet bag 41 is adapted to guide the liquid flowing out of the second slot 72 to the flow guiding bag 42. Subsequently, the flow guiding bag 42 can guide the liquid to flow to the collection device. The counterweight 5 is connected to the flow guiding bag 42, which can hang naturally under the action of gravity. The liquid can flow naturally to the collection device under the action of gravity, eliminating the need for power equipment such as pumps. The surgical patch 10 has a simple structure and is easy to manufacture.

[0057] In some embodiments of this utility model, the surgical patch 10 further includes: a protective paper, which is bonded to the adhesive surface. The protective paper is suitable for protecting the adhesive surface and can prevent the surgical patch 10 from being contaminated during transportation and storage, keep the adhesive surface clean, and ensure that the adhesive surface of the surgical patch 10 has good adhesion before use. This helps to ensure that the adhesive surface can be tightly adhered to the patient's skin surface and can guarantee the connection strength between the adhesive surface and the patient's skin. It can also reduce the risk of the surgical patch 10 shaking during the operation, so as to facilitate the smooth progress of the operation.

[0058] In some embodiments of this utility model, reference is made to Figure 1 As shown, the surgical patch 10 also includes a suction connector 6, which can be constructed as a cylindrical structure. The suction connector 6 is connected to the liquid-blocking strip 2 and communicates with the suction channel 21. The outer peripheral wall of the suction connector 6 can have external threads, which are suitable for threaded engagement with the negative pressure aspirator, so as to realize the detachable connection between the suction connector 6 and the negative pressure aspirator, which facilitates the disassembly and replacement of the negative pressure aspirator.

[0059] In some embodiments of this utility model, the operating surface 12 is a smooth hydrophobic layer, which can effectively prevent liquid from remaining or accumulating on the surface of the operating surface 12, further reducing the risk of liquid interfering with the surgical field of vision and facilitating the smooth progress of the operation.

[0060] In some embodiments of this utility model, the liquid-blocking strip 2 can be made of silicone material. The silicone material can balance the mechanical strength, softness and elasticity of the liquid-blocking strip 2, avoid damage caused by accidental collision during operation, maintain the shape stability of the liquid-blocking strip 2, effectively play the water-blocking function of the liquid-blocking strip 2, and can closely fit the contour of the surgical area to effectively prevent liquid leakage.

[0061] In some embodiments of this invention, the patch body 1 may be made of a medical-grade transparent or translucent flexible polymer material, such as a composite material of polyvinyl alcohol and polyurethane, which has good flexibility and support, making it easier to adapt to the skin contours of different patients. In addition, the patch body 1 may be constructed in a rectangular shape with appropriate arc-shaped depressions or protrusions at key locations (such as near the intervertebral space), facilitating precise positioning and coverage, and helping the patch body 1 to conform to the spinal surgery area.

[0062] In some embodiments of this utility model, during the production process, the surgical patch 10 can be injection molded into the patch body 1 according to a precision mold, and the components of the liquid-blocking strip 2 can be prefabricated and assembled in multiple layers. The liquid-blocking strip 2 can be welded to the patch body 1 using a high-precision hot-melt equipment. After strict pressure, waterproof and water absorption performance tests, the product quality is ensured.

[0063] In some embodiments of this utility model, when the surgical patch 10 is used before surgery, medical staff wash and disinfect their hands, select a surgical patch 10 of appropriate size, carefully peel off the protective paper, align the surgical field opening 11 with the surgical area, and slowly lay it flat from one end to ensure that the patch body 1 is tightly attached to the patient's skin without wrinkles, and the liquid-blocking strip 2 is tightly wrapped around the surgical incision. After checking that everything is correct, the surgical operation can begin. During the operation, the status of the patch body 1 and the liquid-blocking strip 2 should be closely monitored, and any abnormalities should be dealt with in a timely manner.

[0064] According to the embodiment of this utility model, the surgical patch 10 can be applied to minimally invasive spinal surgery. It has excellent liquid control capabilities, can efficiently absorb liquids the moment they are generated, prevent liquid from accumulating in the surgical area and affecting vision, protect the surgical environment, ensure the accuracy of medical staff's operations, and reduce the risk of surgical errors caused by obstructed vision. The liquid-blocking strip 2 can form a reliable anti-leakage barrier, which can effectively prevent liquid from spreading to other parts of the patient's body and the operating table, reduce the chance of postoperative infection, and keep the surrounding environment of the surgical area dry and clean, which is conducive to the orderly placement and operation of surgical instruments. In addition, the fitting and fixing design of the patch body 1 fully considers the operation process of medical staff, is easy to lay quickly and accurately, and has high stability during long-term surgery without frequent adjustments, saving surgical time and reducing the burden on medical staff. The surgical patch 10 has good ease of use.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0066] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A surgical dressing, characterized in that, include: The film body (1) has a surgical field through hole (11) and an adhesive surface and an operating surface (12) facing each other. The surgical field through hole (11) penetrates the adhesive surface and the operating surface (12). A liquid-blocking strip (2) is arranged around the outside of the surgical field through hole (11) and connected to the operating surface (12). The liquid-blocking strip (2) and the operating surface (12) together define a liquid-blocking groove (7). The liquid-blocking strip (2) has a suction channel (21) and a suction hole (22). The suction channel (21) communicates with the liquid-blocking groove (7) through the suction hole (22). A negative pressure suction device is connected to the suction channel (21) and is used to draw negative pressure from the suction channel (21).

2. The surgical dressing according to claim 1, characterized in that, The end of the suction hole (22) that is connected to the liquid-blocking groove (7) is the suction inlet (221), and the end of the suction hole (22) that is connected to the suction channel (21) is the suction outlet (222). The distance between the suction inlet (221) and the film body (1) is less than the distance between the suction outlet (222) and the film body (1).

3. The surgical dressing according to claim 1, characterized in that, The number of suction holes (22) is multiple, and the multiple suction holes (22) are arranged at intervals along the length direction of the liquid-blocking strip (2).

4. The surgical dressing according to claim 1, characterized in that, The liquid-blocking strip (2) is welded to the film body (1).

5. The surgical dressing according to claim 1, characterized in that, The liquid-blocking strip (2) and the film body (1) are provided with reinforcing ribs (3) at the edge of the connection.

6. The surgical dressing according to claim 1, characterized in that, The liquid-blocking groove (7) has a first groove (71) and a second groove (72), the first groove (71) is opposite to the operating surface (12), and the second groove (72) is located between the two ends of the liquid-blocking strip (2) in the length direction.

7. The surgical dressing according to claim 6, characterized in that, The liquid-blocking strip (2) includes: a first sub-liquid-blocking strip (24), a second sub-liquid-blocking strip (25) and a third sub-liquid-blocking strip (26). The first sub-liquid-blocking strip (24) and the third sub-liquid-blocking strip (26) are arranged in parallel. One end of the first sub-liquid-blocking strip (24) and one end of the third sub-liquid-blocking strip (26) are connected to the second sub-liquid-blocking strip (25). The other end of the first sub-liquid-blocking strip (24) and the other end of the third sub-liquid-blocking strip (26) form the second groove (72).

8. The surgical dressing according to claim 6, characterized in that, The surgical patch also includes a fluid guide bag (4), which is flexibly connected to the patch body (1), and the inlet of the fluid guide bag (4) is adjacent to the second slot (72).

9. The surgical dressing according to claim 8, characterized in that, The surgical patch also includes a counterweight (5), which is connected to the fluid guide bag (4).

10. The surgical patch according to any one of claims 1-9, characterized in that, The surgical dressing also includes a protective paper, which is bonded to the adhesive surface.

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