Negative pressure drainage pipeline system

Abstract

The utility model provides a negative pressure drainage pipeline system which solves the technical problems that in a negative pressure drainage system with polyvinyl alcohol as an absorber, a drainage tube deforms and cuts off flow due to negative pressure, and the drainage efficiency of dressing is reduced. A negative pressure drainage pipeline system is composed of a hollow outer frame and a drainage pipe communicated with the hollow outer frame, at least one set of negative pressure source connectors are oppositely arranged on the outer surface of the hollow outer frame, the drainage pipe is formed by communicating a transverse drainage pipe and a longitudinal drainage pipe, and the drainage pipe is connected to the inner surface of the hollow outer frame. And a plurality of holes are formed in the tube wall of the drainage tube.

Description

Technical Field

[0001] The utility model relates to the technical field of wound care, especially the optimization of the pipeline in the negative pressure drainage system with polyvinyl alcohol as the absorbent, and specifically relates to a negative pressure drainage pipeline system. Background Art

[0002] Among numerous methods for wound treatment and management, the negative pressure drainage technique is highly favored for its ability to promote wound healing and reduce infection. Among them, using polyvinyl alcohol (PVA) foam as the drainage medium is a common practice in this technique. Due to its excellent water absorption, PVA foam is particularly suitable for dealing with clinical situations that require a large amount of drainage or simultaneous flushing and drainage. However, the application of PVA foam is not without challenges. Due to its relatively dense structure, the PVA foam has a low open pore rate and small pore diameters, which leads to the risk of the foam being flattened after applying negative pressure. Once flattened, the pore diameters of the foam will further decrease or even become blocked, greatly increasing the risk of a decline or even failure in drainage efficiency. In addition, the deformation of PVA foam under pressure may also cause compression on the drainage tube therein, thus affecting the drainage fluidity, which is crucial for ensuring the treatment effect. Content of the Utility Model

[0003] The utility model provides a negative pressure drainage pipeline system, which solves the technical problems of the deformation and interruption of the drainage tube caused by negative pressure and the reduction of the drainage efficiency of the dressing in the negative pressure drainage system with polyvinyl alcohol as the absorbent.

[0004] The utility model is realized through the following technical solutions:

[0005] A negative pressure drainage pipeline system is composed of a hollow outer frame and a drainage tube connected to the hollow outer frame. At least one group of negative pressure source interfaces is oppositely arranged on the outer surface of the hollow outer frame. The drainage tube is formed by connecting transverse and longitudinal drainage tubes. The drainage tube is connected to the inner surface of the hollow outer frame, and there are several openings on the tube wall of the drainage tube.

[0006] Further, the hollow outer frame is placed outside the wound surface.

[0007] Further, the drainage tube is formed by the transverse and longitudinal drainage tubes being horizontally and vertically cross-connected.

[0008] Further, the diameter of the longitudinal drainage tube is 1.5 - 2 times that of the transverse drainage tube.

[0009] Further, a paste layer is fixedly pasted on the lower surface of the hollow outer frame for pasting the negative pressure drainage pipeline system on the skin around the wound surface.

[0010] Further, a release paper is pasted on the lower surface of the adhesive layer.

[0011] Further, a PVA absorption layer is placed inside the hollow outer frame, and a drainage tube is embedded inside the PVA absorption layer to construct a negative pressure drainage system.

[0012] Further, the cross-sectional shape of the hollow outer frame includes: rectangle, rounded rectangle, circle, irregular shape.

[0013] Further, it further includes a covering film mounting component. The covering film mounting component is composed of an annular mounting plate and mounting protrusions fixed vertically downward from the mounting plate. An installation groove is formed by inward depression on the upper surface of the hollow outer frame. The mounting protrusions are inserted into the installation groove for fixation, and at the same time, the covering film is fixed in the installation groove together.

[0014] Further, several spring buckles are fixed on the outer surface and / or inner surface of the mounting protrusion. Correspondingly, spring buckle installation grooves with the same quantity and position are fixed in the installation groove.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] The dressing system is placed around the wound surface through the hollow outer frame to create a negative pressure environment above the wound surface without causing harm to the wound surface;

[0017] A drainage pipeline system is constructed through the hollow outer frame and the drainage tube communicated with the inside. Firstly, this system provides support for the dressing. Secondly, it changes the connection direction of the negative pressure source from the center of the upper surface to the surrounding directions. At this time, when sucking, the compression on the drainage tube is reduced;

[0018] The drainage tube is divided into a transverse drainage tube and a longitudinal drainage tube, which further increases the support effect, improves the drainage efficiency due to the increase in diameter, and also improves the situation of the drainage tube being compressed when stressed;

[0019] A sealed negative pressure environment is constructed by pasting on the skin surface through the adhesive layer;

[0020] Through the covering film mounting component, the covering film can be covered faster and more conveniently. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the pipeline system of Embodiment 1 of a negative pressure drainage pipeline system of the present utility model;

[0022] Figure 2 is a structural diagram of the side holes in the pipeline system of Embodiment 1 of a negative pressure drainage pipeline system of the present utility model;

[0023] Figure 3It is a schematic structural diagram of the pipeline system of Embodiment 2 of a negative pressure drainage pipeline system of the present utility model;

[0024] Figure 4 It is a schematic structural diagram of the adhesive layer of Embodiment 3 of a negative pressure drainage pipeline system of the present utility model;

[0025] Figure 5 It is an assembly schematic diagram of the PVA absorption layer of Embodiment 4 of a negative pressure drainage pipeline system of the present utility model;

[0026] Figure 6 It is a schematic structural diagram of the covering film installation assembly of Embodiment 5 of a negative pressure drainage pipeline system of the present utility model;

[0027] Figure 7 It is a schematic structural diagram of the spring buckle in the covering film installation assembly of Embodiment 5 of a negative pressure drainage pipeline system of the present utility model.

[0028] Among them, 10 - pipeline system, 100 - hollow outer frame, 110 - negative pressure source interface, 200 - drainage tube, 210 - side hole, 220 - longitudinal drainage tube, 230 - transverse drainage tube, 300 - adhesive layer, 400 - PVA absorption layer, 500 - covering film installation assembly, 510 - annular panel, 520 - installation protrusion, 120 - installation groove, 530 - spring buckle. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only representative embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] To solve the problems of the polyethylene glycol dressing negative pressure drainage system being blocked and cut off by negative pressure and the pore diameter of the dressing being reduced, on the one hand, we can start from the polyethylene glycol material and optimize it by changing the pore size. However, its drawback is that it will weaken the liquid absorption capacity of the polyethylene glycol dressing and cannot fully exert the excellent liquid absorption capacity of the polyethylene glycol material. Secondly, we can optimize from the drainage tube. The present utility model solves the above problems by designing a negative pressure drainage pipeline system without affecting the liquid absorption performance of the polyethylene glycol. Embodiment 1

[0031] As Figure 1 and Figure 2As shown in the figure, the negative pressure drainage pipeline system is composed of a hollow outer frame 100 and a drainage pipe 200 that is connected to the hollow outer frame 100 and located within the hollow outer frame 100. Specifically, the hollow outer frame 100 is an annular structure in the shape of a rectangle, a circle, or other shapes (which can be customized according to the shape of the wound). The hollow outer frame 100 is placed around the wound surface and the wound surface is framed within the hollow outer frame 100. When in use, it will not compress the wound surface. The hollow outer frame 100 is made of relatively hard medical plastic, which can provide a certain supporting force and can fit on the skin. There is at least one set of negative pressure source interfaces 100 on the outer surface of the hollow outer frame 100. Each set of negative pressure source interfaces 110 has two. One is located at the center of the left outer surface of the hollow outer frame 100. Correspondingly, the other is located at the center of the right outer surface of the hollow outer frame 110; and / or there are negative pressure source interfaces 110 on the front outer surface and at the center of the rear outer surface.

[0032] The negative pressure source interface 110 is connected to the negative pressure source, and the suction port at the center above the PVA absorption layer 400 is adjusted to suction in all directions (around, left and right, or front and back), changing the direction of the force from the vertical direction to the horizontal direction, reducing the compression on the PVA absorption layer 400.

[0033] Several drainage pipes 200 that are horizontally and vertically interconnected are connected to the inner surface of the hollow outer frame 100. The material of the drainage pipe 200 is a commonly used silicone drainage pipe. There are several open side holes 210 on the outer surface of the drainage pipe 200. The side holes 210 are used to suction the exudate within the PVA absorption layer 400.

[0034] The drainage pipes 200 are arranged in a staggered connection manner, making the inside of the drainage pipes 200 through. Even if a certain drainage pipe is blocked due to force, suction drainage can still be carried out from the nearby connected drainage pipes 200; secondly, the drainage pipes 200 are constructed into a network structure, which can provide a three-dimensional support for the PVA absorption layer 400. Embodiment 2

[0035] On the basis of Embodiment 1, the drainage pipe 200 is formed by horizontally and vertically staggered connection of a longitudinal drainage pipe 220 and a transverse drainage pipe 230, as Figure 3 shown. Among them, the diameter of the longitudinal drainage pipe 220 is 1.5 - 2 times that of the transverse drainage pipe. This optimization is to improve the three-dimensional support ability for the PVA absorption layer 400. Even when being compressed by suction, the longitudinal drainage pipe 220 will be preferentially compressed. When the longitudinal drainage pipe 220 is compressed to the same diameter as the transverse drainage pipe 230, further suction will compress the longitudinal drainage pipe 220 and the transverse drainage pipe 230. Through this design, generally, when the suction of the negative pressure drainage compresses the longitudinal drainage pipe 220 to the same diameter as the transverse drainage pipe 220, the construction of the negative pressure environment can be satisfied. At this time, the drainage pipe 200 can provide better support for the PVA absorption layer 400. Example 3

[0036] Based on Example 1 and Example 2, considering the fixation problem of the negative pressure drainage pipeline system in the usage scenario, an adhesive layer 300 is fixed on the lower surface of the central control outer frame 100, and the adhesive layer 300 is used to closely adhere the hollow outer frame 100 to the skin.

[0037] In the negative pressure drainage system, it is also necessary to add a layer of covering film on the topmost layer of the absorption layer. The covering film is used to construct a negative pressure environment and keep the wound surface moist. In this embodiment, after the adhesive layer 300 is fixed around the wound surface, on the outside of the negative pressure drainage dressing (composed of the pipeline system 100 and the PVA absorption layer 400 located inside the pipeline system 100 and wrapped around the upper and lower sides of the drainage tube), it is completely wrapped and fixed with the covering film (the content of this part will not be elaborated, and its covering and wrapping method is the same as the existing clinical method).

[0038] Furthermore, in order to facilitate storage and transportation, release paper is added on the outer surface of the adhesive layer 300 to protect the adhesive layer before use. Example 4

[0039] This embodiment shows a schematic diagram of the assembled PVA absorption layer 400. In this embodiment, the PVA absorption layer 400 is located inside the hollow outer frame 100, is disposed close to the inner surface, and the drainage tube 200 is embedded inside the PVA absorption layer 400.

[0040] During use, the wound exudate is absorbed by the PVA absorption layer 400 and then drained to the outside of the body through the drainage tube 200 wrapped inside. Example 5

[0041] This embodiment provides another method of sealing with the covering film. If the adhesive layer 300 can be stably adhered to the skin surface, is waterproof and has good sealing performance, then the covering film does not need to be wrapped and covered as a whole, and only the area above the PVA absorption layer 400 needs to be covered.

[0042] In this embodiment, a commonly used medical-grade silicone adhesive can be selected. This adhesive has excellent sealing performance. The silicone adhesive can form a strong adhesion, providing good waterproof and airtight sealing effects. It can block moisture and air, maintaining the complete seal around the hollow outer frame 100; secondly, this adhesive is skin-friendly, suitable for long-term attachment to the skin, and is not likely to cause allergic or irritating reactions; furthermore, the silicone adhesive has excellent water resistance and can maintain its bonding and sealing performance even when continuously in contact with moisture, and will not fall off due to the influence of water; finally, the silicone adhesive can adapt to different surface morphologies and textures, ensuring good bonding and sealing effects even on uneven parts of the skin.

[0043] In this embodiment, as Figure 6 and Figure 7 shown, the covering film is mounted on the surface of the PVA absorption layer 400 through the covering film mounting assembly 500 and the mounting groove 120. The covering film mounting assembly 500 is composed of an annular panel 510 and a mounting protrusion 520 vertically mounted downward from the annular panel 510; a mounting groove 120 is formed by downward depression on the upper surface of the hollow outer frame 100; the mounting protrusion 520 is snapped into the mounting groove 120 for fixation. In order to enhance the sealing effect, there is a sealing ring at the bottom of the mounting groove 120, and the mounting protrusion 520 can be hermetically fixed after being snapped in.

[0044] During use, place the covering film above the PVA absorption layer 400, and then snap the covering film mounting assembly 500 into the mounting groove 120. At this time, the covering film is also snapped into the sealing groove 120 for fixation; if necessary, the excess covering film can be cut along the periphery of the hollow outer frame 100.

[0045] In addition, in order to strengthen the fixing effect, a plurality of spring clasps 530 are mounted on the outer surface and / or the inner surface of the mounting protrusion 520. Correspondingly, there are a plurality of spring clasp mounting grooves in the mounting groove 120. After the mounting protrusion 520 is snapped into the mounting groove 120, the spring clasps 530 are snapped into the spring clasp mounting grooves for fixation.

[0046] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention should, by the same token, be included in the protection scope of the present invention.

Claims

1. A negative pressure drainage pipeline system, characterized in that, It consists of a hollow outer frame and a drainage tube connected to the hollow outer frame. At least one set of negative pressure source interfaces is oppositely arranged on the outer surface of the hollow outer frame. The drainage tube is formed by connecting horizontal and vertical drainage tubes, and the drainage tube is connected to the inner surface of the hollow outer frame. There are several openings on the tube wall of the drainage tube. A PVA absorption layer is placed inside the hollow outer frame, and the drainage tube is embedded inside the PVA absorption layer to construct a negative pressure drainage system.

2. The negative pressure drainage pipeline system according to claim 1, wherein The hollow outer frame is placed outside the wound surface.

3. The negative pressure drainage pipeline system according to claim 1, characterized in that, The drainage tube is formed by horizontally and vertically intersecting and connecting a horizontal drainage tube and a vertical drainage tube.

4. The negative pressure drainage pipeline system according to claim 3, wherein, The diameter of the vertical drainage tube is 1.5 - 2 times that of the horizontal drainage tube.

5. The negative pressure drainage pipeline system according to claim 1, wherein, A paste layer is fixedly pasted on the lower surface of the hollow outer frame to paste the negative pressure drainage pipeline system on the skin around the wound surface.

6. The negative pressure drainage pipeline system according to claim 5, wherein, A release paper is pasted on the lower surface of the paste layer.

7. A negative pressure drainage pipeline system according to claim 1, characterized in that, The cross-sectional shape of the hollow outer frame includes: rectangle, rounded rectangle, circle, irregular shape.

8. The negative pressure drainage pipeline system according to claim 1, wherein, It further includes a covering film installation component. The covering film installation component consists of an annular installation plate and an installation protrusion fixedly installed vertically downward from the installation plate. The upper surface of the hollow outer frame is recessed inward to form an installation groove. The installation protrusion is inserted into the installation groove for fixation, and at the same time, the covering film is fixed in the installation groove together.

9. The negative pressure drainage pipeline system according to claim 8, characterized in that, Several spring buckles are fixed on the outer surface and / or inner surface of the installation protrusion. Correspondingly, spring buckle installation grooves with the same quantity and position are fixed in the installation groove.

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