Combined wound flushing negative pressure device
By designing a combined wound flushing negative pressure device, the problems of uneven negative pressure and uneven perfusion of drug solution in the negative pressure device were solved, achieving uniform pharmacological effect and exudate removal in wound treatment, improving treatment effects and reducing production costs.
Patent Information
- Application Number
- CN202421857345.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-08-02
AI Technical Summary
In existing NPWT devices, negative pressure causes the polyurethane sponge to collapse, resulting in uneven negative pressure in the treatment area, local fluid removal obstruction and accumulation, and uneven drug perfusion. Polyurethane sponges are expensive and have a single specification, making them difficult to cut to the right size.
A combined wound flushing negative pressure device was designed, including a dressing layer, a liquid inlet device, and a liquid outlet device. The dressing layer matches the wound surface, and a pressure gradient is formed using a drug bottle and a negative pressure source. The drug passes through the dressing layer made of sterile fabric, the support column realizes the diffusion of the drug solution, and the liquid collection tank collects the exudate, ensuring uniform flow of the drug solution and the removal of the exudate.
The negative pressure in the treatment area is uniform and stable, the liquid medicine is evenly applied, the flow process is prolonged, local liquid accumulation is avoided, and the treatment effect is improved. The equipment has a simple structure and is suitable for mass production.
Smart Images
Figure CN223464285U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical equipment, and specifically relates to a combined wound flushing negative pressure device. BACKGROUND
[0002] Wound is a common clinical phenomenon, and negative pressure wound therapy (NPWT) is a common technical method in the current wound treatment process, which is roughly divided into liquid perfusion treatment, local necrosis and exudate removal, promotion of wound neovascularization and granulation tissue growth according to different wound conditions and treatment purposes, and can be applied to infected wounds or clean wounds. The NPWT device used in the clinic at present generally uses polyurethane sponge to cover the wound or fill the sinus, and thus forms a certain negative pressure in the treatment area and removes exudate. The central part of the polyurethane sponge is provided with a negative pressure interface connected with a negative pressure suction pipe. One side of the negative pressure interface can also be provided with an intermediate interface for connecting a liquid injection pipe. The problems of this scheme are as follows: firstly, the collapse of the polyurethane sponge caused by negative pressure can cause the lumen of the sponge to shrink or even close, which is not conducive to the continuous, uniform and stable negative pressure in the treatment area, and can also cause local liquid removal obstacles or even storage. Secondly, the liquid inlet joint and the liquid outlet joint on the existing product are close to each other, so that the liquid cannot be perfused in the entire treatment area. In addition, the polyurethane sponge contained in the currently marketed treatment kit is expensive and has a single specification, and the appropriate size cannot be cut according to the wound. Therefore, how to develop a combined wound flushing negative pressure device with a new structure to overcome the above problems in the prior art is a direction that needs to be further studied by the person skilled in the art. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at providing a combined wound flushing negative pressure device, which can improve the continuous, uniform and stable negative pressure in the treatment area and avoid causing local liquid removal obstacles and storage.
[0004] The utility model discloses a combined wound flushing negative pressure device, it includes dressing layer, liquid inlet device and liquid outlet device, the shape of dressing layer is configured as with human body wound shape is matched for covering on the upper surface of human body wound, liquid inlet device includes liquid medicine bottle and liquid inlet pipeline, liquid medicine bottle sets up in the upper of dressing layer and stores the flushing liquid medicine in liquid medicine bottle, the input end of liquid inlet pipeline is connected with liquid medicine bottle, and the output end of liquid inlet pipeline is fixedly installed one end of the upper side of dressing layer, liquid outlet device includes liquid outlet pipeline, negative pressure source, negative pressure pipe and liquid collecting tank, the input end of liquid outlet pipeline is fixedly installed the other end of the upper side of dressing layer, and the output end of liquid outlet pipeline is fixedly installed in liquid collecting tank, the output end of negative pressure pipe is connected with negative pressure source and the input end of negative pressure pipe is fixedly installed in liquid collecting tank.
[0005] By adopting the technical scheme, the dressing layer is covered on the wound surface, the liquid inlet pipeline is opened, and the flushing liquid in the liquid bottle is introduced into one end of the dressing layer by using gravity. The negative pressure source is opened, and the whole device forms a pressure gradient, so that the flushing liquid permeating along the dressing layer is driven by the negative pressure to move the accumulated liquid on the wound surface to the liquid outlet device and finally into the liquid collection tank. In this process, the medicine is continuously and uniformly applied to the wound surface to achieve the pharmacological treatment effect; at the same time, the exudate and metabolic products on the wound surface are removed together by using the continuous liquid flow and collected in the liquid collection tank.
[0006] Preferably, the dressing layer is made of sterile fabric and has a thin oval structure, and the output end of the liquid inlet pipeline is fixedly installed at one end of the long side of the upper side of the dressing layer; and the input end of the liquid outlet pipeline is fixedly installed at the other end of the long side of the upper side of the dressing layer.
[0007] By adopting the technical scheme, the flushing liquid output by the liquid bottle can ensure continuous and uniform flow through the wound surface, achieving the best pharmacological treatment effect.
[0008] Preferably, the upper side of the dressing layer is fixedly installed with one intermediate interface at each end; the intermediate interface comprises a joint circular pipe and a disc body, the back of the disc body is connected with a ring fence perpendicular to the disc body, a through hole is arranged at the center position of the disc body, and a plurality of support columns are distributed on the back of the disc body and are at the same height as the ring fence; the ring fence on the side away from the disc body is installed on the upper side of the dressing layer; one end of the pipe body of the joint circular pipe is installed on the front of the disc body and is in communication with the through hole; the output end of the liquid inlet pipeline is fixedly installed on the joint circular pipe of one intermediate interface, and the input end of the liquid outlet pipeline is fixedly installed on the joint circular pipe of the other intermediate interface.
[0009] By adopting the technical scheme, during the liquid injection process, the liquid enters the intermediate interface from the joint circular pipe, reaches the upper side of the dressing layer along the plurality of support columns, so that the injected liquid is diffused, the liquid is prevented from entering the dressing layer too fast, the liquid flow process is prolonged, and the treatment effect of the liquid is improved.
[0010] Preferably, the plurality of support columns are distributed in a comb-shaped array on the back of the disc body.
[0011] By adopting the technical scheme, the comb-shaped array distributed support columns can make the injection of the liquid more uniform.
[0012] Preferably, it further comprises a sterile transparent adhesive film, and the sterile transparent adhesive film covers the upper side of the dressing layer and each disc body.
[0013] By adopting the technical scheme, the sterile transparent adhesive film is used to seal the wound surface and the surrounding area.
[0014] Compared with the prior art, the utility model has the following technical progress:
[0015] Firstly, the utility model can improve the uniformity and stability of the negative pressure of the treatment area, and avoid causing local liquid exclusion obstacles and accumulation.
[0016] Secondly, the utility model can ensure that the flushing liquid output by the liquid medicine bottle can continuously and uniformly flow through the wound surface, and play the best pharmacological treatment effect.
[0017] Thirdly, the utility model can diffuse the injected liquid medicine, avoid the liquid medicine from entering the dressing layer too fast, prolong the liquid medicine flow process, and improve the treatment effect of the liquid medicine.
[0018] Finally, the equipment of the utility model has simple structure, and is suitable for mass production and preparation. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structural schematic view of the embodiment 1.
[0020] Figure 2 It is a structural schematic view of the middle dressing layer. Figure 1
[0021] Figure 3 It is an internal structural schematic view of the first intermediate interface.
[0022] In the drawings, the corresponding reference signs of the components are as follows:
[0023] 100, dressing layer; 200, liquid medicine bottle; 300, liquid inlet pipeline; 400, liquid outlet pipeline; 500, liquid collecting tank; 600, negative pressure pipe; 700, negative pressure source; 110, intermediate interface; 130, sterile transparent adhesive film; 111, joint round pipe; 112, disc body; 113, annular fence; 114, support column. DETAILED DESCRIPTION
[0024] The implementation modes of the utility model are described below through specific specific examples, and other advantages and effects of the utility model can be easily understood by those skilled in the art from the disclosure of the specification. The utility model can also be implemented or applied through other different specific implementation modes, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model.
[0025] Embodiment 1, please refer to Figures 1-3 :
[0026] The application discloses a combined wound flushing negative pressure device, which comprises a dressing layer 100, a liquid inlet device, a liquid outlet device and a sterile dressing film.
[0027] The dressing layer 100 is configured to match the shape of a human body wound surface and is used for covering the upper surface of the human body wound surface; in particular, the dressing layer 100 is made of sterile fabric and is cut into an overall thin-oval structure which can cover the wound surface or the sinus surface of a patient; the long edges of the upper side of the dressing layer 100 are respectively fixedly provided with an intermediate interface 110; the intermediate interface 110 comprises a joint circular pipe 111 and a disc body 112; the back edge of the disc body 112 is connected with a ring fence 113 which is perpendicular to the disc body 112; a through hole is arranged at the center position of the disc body 112; a plurality of support columns 114 which are in the same height as the ring fence 113 are distributed on the back of the disc body 112, and the plurality of support columns 114 are distributed on the back of the disc body 112 in a comb-tooth array mode with the through hole as the center; the ring fence 113 is arranged on the upper side of the dressing layer 100 in a back-to-disc body 112 mode; and the pipe body of the joint circular pipe 111 is arranged on the front of the disc body and is in communication with the through hole.
[0028] The liquid inlet device comprises a liquid medicine bottle 200 and a liquid inlet pipeline 300; the liquid medicine bottle 200 is arranged above the dressing layer 100 and stores flushing liquid medicine; the input end of the liquid inlet pipeline 300 is in communication with the liquid medicine bottle 200; and the output end of the liquid inlet pipeline 300 is fixedly arranged on the joint circular pipe 111 of the intermediate interface 110.
[0029] The liquid outlet device comprises a liquid outlet pipeline 400, a negative pressure source 700, a negative pressure pipeline 600 and a liquid collecting tank 500; the input end of the liquid outlet pipeline 400 is fixedly arranged on the joint circular pipe 111 of the other intermediate interface 110; the output end of the liquid outlet pipeline 400 is fixedly arranged in the liquid collecting tank 500; the negative pressure source 700 is in communication with the output end of the negative pressure pipeline 600; and the input end of the negative pressure pipeline 600 is fixedly arranged in the liquid collecting tank 500.
[0030] The sterile transparent film 130 covers the upper side of the dressing layer 100 and the disc body 112 of each intermediate interface 110; the joint circular pipe 111 of each intermediate interface 110 penetrates through the sterile transparent film 130 and extends out of the upper side of the sterile transparent film 130; and the sterile transparent film 130 is further configured to have a covering area greater than that of the dressing layer 100, so that the wound surface and the surrounding area are sealed.
[0031] In practice, the working process is as follows:
[0032] The dressing layer 100 is cut according to the shape of the wound surface, and is covered on the wound surface. The liquid inlet pipeline 300 is opened, and the flushing liquid in the liquid bottle 200 is introduced into one end of the dressing layer 100 by gravity. During the process, the flushing liquid enters the middle joint 110 from the joint pipe 111, and reaches the upper side of the dressing layer 100 along the support columns 114, so that the injected liquid is diffused to avoid the flushing liquid from entering the dressing layer 100 too fast, prolongs the flow process of the liquid, and improves the treatment effect of the liquid. Then, the negative pressure source 700 is opened, so that the flushing liquid permeating along the dressing layer 100 drives the exudate of the wound surface to enter the liquid outlet pipeline 400 through the other middle joint 110 under the action of the negative pressure, and finally enters the liquid collecting tank 500. The whole device forms a pressure gradient, and pushes the liquid from the liquid inlet pipeline 300 to the dressing layer 100 to the liquid outlet pipeline 400, and finally concentrates in the liquid collecting tank 500. In this process, the medicine is continuously and uniformly applied to the wound surface, and the pharmacological treatment effect is achieved. At the same time, the exudate and metabolic products on the wound surface are removed together by the continuous flow of the liquid, and are collected in the liquid collecting tank 500.
[0033] The above describes the embodiments of the present application in detail in combination with the drawings, but the present application is not limited to the above embodiments. Even if various changes are made to the present application, if the changes belong to the scope of the claims of the present application and equivalent technologies, they still fall within the protection scope of the present application.
Claims
1. A combined wound flushing negative pressure device, characterized in that: The combined wound flushing and negative pressure device comprises a dressing layer, an inlet device and an outlet device. The dressing layer is configured to match the shape of a human body wound surface and cover the upper surface of the human body wound surface. The inlet device comprises a liquid bottle and an inlet pipeline. The liquid bottle is arranged above the dressing layer and contains flushing liquid. The input end of the inlet pipeline is in conductive connection with the liquid bottle. The output end of the inlet pipeline is fixedly installed on one end of the upper side of the dressing layer. The outlet device comprises an outlet pipeline, a negative pressure source, a negative pressure pipeline and a liquid collection tank. The input end of the outlet pipeline is fixedly installed on the other end of the upper side of the dressing layer. The output end of the outlet pipeline is fixedly installed in the liquid collection tank. The output end of the negative pressure pipeline is in conductive connection with the negative pressure source. The input end of the negative pressure pipeline is fixedly installed in the liquid collection tank.
5. The wound flush and negative pressure apparatus of claim 4, wherein the valve is a duckbill valve.
2. The combined wound flushing and negative pressure device according to claim 1, wherein the dressing layer is made of sterile fabric and has a thin oval structure. The output end of the inlet pipeline is fixedly installed on one end of the long side of the upper side of the dressing layer. The input end of the outlet pipeline is fixedly installed on the other end of the long side of the upper side of the dressing layer.
3. The combined wound flushing and negative pressure device according to claim 2, wherein the upper side of the dressing layer is fixedly installed with an intermediate connector at each end. The intermediate connector comprises a joint pipe and a disc body. The back of the disc body is connected with a ring fence perpendicular to the disc body. A through hole is arranged at the center of the disc body. A plurality of support columns are distributed on the back of the disc body. The ring fence is installed on the upper side of the dressing layer. One end of the joint pipe is installed on the front of the disc body and in conductive connection with the through hole. The output end of the inlet pipeline is fixedly installed on the joint pipe of one intermediate connector. The input end of the outlet pipeline is fixedly installed on the joint pipe of the other intermediate connector.
4. The combined wound flushing and negative pressure device according to claim 3, wherein the plurality of support columns are arranged in a comb-shaped array on the back of the disc body. The combined wound flushing and negative pressure device further comprises a sterile transparent adhesive film. The sterile transparent adhesive film covers the dressing layer and the upper side of each disc body.