A negative pressure drainage dressing system for pus wounds

Abstract

The utility model discloses a negative pressure drainage dressing system for pus wounds, which is suitable for the drainage of pus / mucus wounds and solves the problem of how to efficiently drain pus and general exudate at the same time; a negative pressure drainage dressing system for pus wounds, wherein the drainage tube has a hollow drainage channel, the lower surface of the drainage tube is recessed toward the inside of the tube to form a pus drainage groove, the lower side of the pus drainage groove is an opening, the pus drainage groove has hydrophilic properties, the cross-sectional shape of the drainage tube is circular or quasi-circular, the upper surface of the drainage tube is provided with a plurality of drainage holes, the cross-sectional shape of the pus drainage groove is quasi-circular or arc-shaped; the drainage tube is semi-embedded in the dressing to form a dressing system.

Description

Technical Field

[0001] The utility model relates to the technical field of wound care, in particular to a novel negative pressure drainage dressing system suitable for wounds with more pus. Background Art

[0002] Negative pressure drainage technology has been widely used to promote wound healing, reduce infection risks, and improve the management of chronic wounds. This technology relies on creating a local negative pressure environment to promote fluid removal and accelerate tissue regeneration. Although negative pressure drainage systems have achieved significant clinical success, the efficiency and effectiveness of the system still face some significant challenges when dealing with wounds containing large amounts of pus or other viscous fluids.

[0003] One solution to this problem is to adjust the pore size of the dressing so that it can absorb both pus and general exudate, but this method is difficult to strike a balance. On the one hand, a pore size that is too small may make it difficult to effectively suck out the viscous pus, which not only slows down the wound healing process, but also may increase the risk of infection. On the other hand, if the pore size is too large, the absorption capacity of the dressing may be affected, resulting in an inability to effectively absorb and remove more liquid. At the same time, too large a hole may also affect the drainage effect of the entire drainage tube or suction cup.

[0004] Therefore, negative pressure drainage for purulent wounds should take a different approach to find a balance between good drainage of pus and general exudate. Utility Model Content

[0005] The utility model is a negative pressure drainage dressing system for pus wounds, which is suitable for the drainage of pus / mucus-rich wounds and solves the problem of how to efficiently drain pus and general exudate simultaneously.

[0006] In order to achieve the above purpose, the following technical solutions are adopted:

[0007] A negative pressure drainage dressing system for a pus wound, wherein the drainage tube has a hollow drainage channel, the lower surface of the drainage tube is recessed inwardly of the tube to form a pus drainage groove, the lower side of the pus drainage groove is an opening, the pus drainage groove has hydrophilic properties, the cross-sectional shape of the drainage tube is circular or quasi-circular, the upper surface of the drainage tube is provided with a plurality of drainage holes, the cross-sectional shape of the pus drainage groove is quasi-circular or arc-shaped; the drainage tube is semi-embedded in a dressing to form a dressing system.

[0008] Furthermore, the quasi-circular shape is a circle with an area of ​​3 / 4 or more, and the arc shape is an arc with an area of ​​1 / 2 or less.

[0009] Furthermore, two endpoints of the arc shape coincide with two endpoints of the lower surface of the drainage tube.

[0010] Furthermore, there is a baffle at the opening position of the pus drainage groove, the baffle and the lower surface of the drainage tube are located on the same plane, and there are several pus drainage holes on the baffle, and the width of the pus drainage hole at the widest point is 2 / 3-1 of the width of the baffle.

[0011] Furthermore, the pus drainage hole is quasi-circular or square in shape.

[0012] Furthermore, the quasi-circular drainage holes are arranged alternately in left-right direction.

[0013] Furthermore, the sum of the areas of the pus drainage holes is 1 / 2-3 / 4 of the area of ​​the baffle.

[0014] Furthermore, one end of the drainage tube is connected to a negative pressure source, and the lower surface of the drainage tube is exposed and directly contacts the wound surface.

[0015] Furthermore, the lower surface of the dressing protrudes from the lower surface of the drainage tube by a height of 0.5-2 cm.

[0016] Furthermore, several drainage tubes are evenly connected to the central tube along a 360° direction, and the entire tube is half-embedded in the dressing to form a dressing system, and the lower surface of the drainage tube is exposed to directly contact the wound surface.

[0017] The utility model has the following beneficial effects:

[0018] The utility model adopts a new solution idea, a pus drainage groove is arranged on the lower side of the drainage tube, and the lower opening of the pus drainage groove can directly contact the wound surface, and the pus drainage groove has a hydrophilic property, which reduces the adhesion and deposition of pus, so that the pus can be drained smoothly;

[0019] The drainage tube is half-embedded in the dressing, which can not only drain the pus, but also drain the general exudate absorbed by the surrounding dressing into the hollow drainage channel through the drainage hole. The design of this structure can achieve the drainage of pus without affecting the drainage of general exudate, and is especially suitable for wounds with a lot of pus.

[0020] The combination of the baffle and the pus drainage hole not only solves the problem of fixing the drainage tube to the negative pressure source or the central tube, but also further improves the drainage efficiency;

[0021] In the dressing system, the dressing is designed to protrude a certain height from the drainage tube, which does not affect the drainage of pus. At the same time, the dressing can seal the drainage tube to increase the drainage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the drainage tube in Example 1 of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the pus drainage trough in Example 1 of the utility model;

[0024] Figure 3 It is a schematic structural diagram of another pus drainage trough in Embodiment 1 of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the semi-enclosed pus drainage trough in Embodiment 2 of the present utility model;

[0026] Figure 5 This is a schematic diagram of the structure of another semi-enclosed pus drainage trough in Embodiment 2 of the present utility model;

[0027] Figure 6 It is a schematic structural diagram of a dressing system in Embodiment 3 of the present utility model;

[0028] Figure 7 It is an enlarged view of part A in the dressing system of Example 3 of the utility model.

[0029] Among them, 100 - drainage tube, 110 - hollow drainage channel, 120 - pus drainage groove, 130 - drainage hole, 200 - baffle, 210 - quasi-circular drainage hole, 220 - square drainage hole, 300 - dressing. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the examples of the implementation of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only representative embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the utility model.

[0031] If we go beyond the idea of ​​solving the problem of how to evenly drain pus and general exudate by changing the pore size of the dressing, we can consider the properties of pus and general exudate, and then design them from the perspective of structure and material. Pus is a viscous liquid composed of a mixture of white blood cells, dead tissue cells, pathogenic microorganisms and the toxins they produce. Example 1

[0032] like Figure 1 , Figure 2 , Figure 3As shown, the interior of the drainage tube 100 is hollow, which is required for general exudate drainage. There is a pus drainage groove 120 formed by a depression in the direction of the tube on the lower surface. The pus drainage groove 120 is made of a hydrophilic material or the surface of the material is coated with a hydrophilic coating. The purpose is to make the part in contact with the pus present a hydrophilic property, which can reduce the adhesion and deposition of the drainage material in the pus drainage groove, so that the pus can be drained smoothly. The shape of the drainage tube is circular or quasi-circular, and the quasi-circular refers to a shape of 3 / 4 and above (closer to a circle).

[0033] The shape of the pus drainage groove 120 can be Figure 1 and Figure 2 The quasi-circular shape shown in the figure, and the lower end close to the wound surface is opened to form an opening; Figure 3 The arc shape shown refers to the shape of 1 / 2 or less. The advantage of the quasi-circular pus drainage groove 120 is that it is easier to collect pus into the pus drainage groove 120, and the pus is also easier to flow along the pus drainage groove 120; the advantage of the arc-shaped pus drainage groove 120 is that the entire bottom is hydrophilic, and the contact area will be larger.

[0034] Of course, there are a number of evenly distributed drainage holes 130 on the side surface of the drainage tube 100 , and the drainage holes 130 allow general exudate in the peripheral dressing to flow into the hollow drainage channel 110 and then be sucked out from the hollow drainage channel 110 .

[0035] In this embodiment, the key point is that the opening of the pus drainage groove 120 can directly contact the wound surface. The pus can be drained out from the pus drainage groove 120, and the general exudate can also be absorbed into the dressing around the drainage tube, and then attracted into the hollow drainage channel 110 through the drainage holes 130 around the drainage tube 100. Finally, the pus and general exudate are sucked out of the wound surface through the negative pressure source connected to the hollow drainage channel 110 and the pus drainage groove 120 at the same time. Example 2

[0036] Based on Example 1, in order to improve the drainage efficiency, Figure 4 or Figure 5 The optimization of the structure is performed at the opening side of the pus drainage groove 120. The opening side of the pus drainage groove 120 is sealed with a baffle 200. Usually, the baffle 200 can be integrally formed with the drainage tube 100. The baffle 200 and the lower surface of the drainage tube are located on the same plane. However, the key point is that there are several quasi-circular drainage holes 210 ( Figure 4 ) or square drainage hole 220 ( Figure 5), the sum of the total area of ​​the quasi-circular drainage hole 210 or the square drainage hole 220 is approximately 1 / 2-3 / 4 of the baffle area, and the width of the quasi-circular drainage hole 210 or the square drainage hole 220 is 2 / 3-1 of the baffle width (the width refers to the direction perpendicular to the drainage direction). The advantage of this design is that pus can completely pass through the quasi-circular drainage hole 210 or the square drainage hole 220. The advantages of the above design are that, first, the connection between the drainage tube and the negative pressure source or the central tube (in the structure with multiple drainage tubes distributed around, the central tube plays the role of connecting the pipeline and connecting the negative pressure source) is more secure and easy; second, without affecting the drainage of pus, a closed space can be constructed to the greatest extent, which is conducive to improving the efficiency of drainage.

[0037] In the structure of the quasi-circular drainage holes 210 , the quasi-circular drainage holes 210 are arranged alternately left and right, and the arc-shaped squares are sequentially facing left or right. Example 3

[0038] Based on Example 1 or Example 2, a dressing system is formed by using a drainage tube 100, such as Figure 6 As shown in Figure 7, the drainage tube 100 is semi-embedded in the dressing 300 to form a dressing system. Semi-embedded means that the lower surface does not contact the dressing, is exposed to the outside and directly contacts the wound surface, and the parts other than the lower surface are embedded in the dressing 300. As one preferred method, the lower surface of the dressing 300 protrudes from the lower surface of the drainage tube 100, especially containing Figure 3 The drainage tube of the pus drainage groove 120 is placed at a distance of 0.5-2 cm from the inner end of the lower surface of the dressing 300. The purpose is to use the dressing to make the pus drainage groove 120 and the wound surface in a closed space, so as not to affect the suction of pus by the negative pressure source. In the above dressing system, one end of the drainage tube 100 is connected to the negative pressure source or the central tube, and the general exudate of pus in the wound surface is sucked by the negative pressure; this dressing system is more suitable for small wounds.

[0039] Another dressing system can evenly assemble several drainage tubes 100 around the central tube in a 360° manner, so that the dressing system constructed in this way can be suitable for large-area wounds.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description of the present invention and its drawings should also be included in the protection scope of the present invention.

Claims

1. A negative pressure drainage dressing system for pus wounds, wherein: The drainage tube has a hollow drainage channel, characterized in that the lower surface of the drainage tube is recessed toward the inside of the tube to form a pus drainage groove, the pus drainage groove is open below, the pus drainage groove has hydrophilic properties, the cross-sectional shape of the drainage tube is circular or quasi-circular, there are several drainage holes on the upper surface of the drainage tube, and the cross-sectional shape of the pus drainage groove is quasi-circular or arc-shaped; the drainage tube is semi-embedded in the dressing to form a dressing system.

2. A negative pressure drainage dressing system for pus wounds according to claim 1, characterized in that: A quasi-circle is a circle with an area of ​​3 / 4 or more, and an arc is an arc with an area of ​​1 / 2 or less.

3. A negative pressure drainage dressing system for pus wounds according to claim 2, characterized in that: The two endpoints of the arc shape coincide with the two endpoints of the lower surface of the drainage tube.

4. A negative pressure drainage dressing system for pus wounds according to claim 1, characterized in that: There is a baffle at the opening position of the pus drainage groove, and the baffle is located on the same plane as the lower surface of the drainage tube. There are several pus drainage holes on the baffle, and the width of the widest part of the pus drainage hole is 2 / 3-1 of the width of the baffle.

5. A negative pressure drainage dressing system for pus wounds according to claim 4, characterized in that: The shape of the pus drainage hole is quasi-circular or square.

6. A negative pressure drainage dressing system for pus wounds according to claim 5, characterized in that: The quasi-circular drainage holes are arranged alternately in the left and right directions.

7. A negative pressure drainage dressing system for pus wounds according to claim 4 or 5, characterized in that: The sum of the areas of the pus drainage holes is 1 / 2-3 / 4 of the area of ​​the baffle.

8. A negative pressure drainage dressing system for pus wounds according to claim 1 or 4, characterized in that: One end of the drainage tube is connected to the negative pressure source, and the lower surface of the drainage tube is exposed and directly contacts the wound surface.

9. A negative pressure drainage dressing system for pus wounds according to claim 8, characterized in that: The lower surface of the dressing protrudes from the lower surface of the drainage tube by a height of 0.5-2 cm.

10. A negative pressure drainage dressing system for pus wounds according to claim 1 or 4, characterized in that: Several drainage tubes are evenly connected to the central tube along a 360° direction, and then the entire pipeline is half-embedded in the dressing to form a dressing system. The lower surface of the drainage tube is exposed and directly contacts the wound surface.

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