Negative pressure flow guide patch with incision in abdominal core

Abstract

The negative-pressure flow guide patch comprises a flow guide patch body, and the upper end of the flow guide patch body is provided with a negative-pressure connector used for being connected into negative-pressure drainage equipment; the device comprises a polyurethane film from top to bottom, a water-absorbing abdominal core is arranged at the lower end of the polyurethane film, a contact response layer used for observing the liquid storage amount is arranged at the bottom of the water-absorbing abdominal core, a perforated silica gel adhesive tape is arranged at the lower end of the contact response layer, and a release film is arranged at the lower end of the perforated silica gel adhesive tape. After transparent gel of the contact response layer is expanded when meeting liquid, the distance between light reflection particles changes to form bright spot warning, real-time visual monitoring of the liquid accumulation amount is achieved, and the replacement lag risk is reduced; the radial notches enhance the ductility of the abdominal core, adapt to the movement of the joint parts, and are matched with the flexible fitting property of the perforated silica gel adhesive tape, so that the falling risk is reduced, and the wearing comfort of a patient is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical products, in particular to a negative pressure drainage patch with abdominal core belt cut. BACKGROUND

[0002] The negative pressure drainage patch is a medical dressing for wound management, which promotes the discharge of exudate through negative pressure adsorption and drainage technology, accelerates wound healing and reduces the risk of infection.

[0003] The existing negative pressure drainage patch has poor extensibility when in use. When used on joint parts or uneven parts of patients, the product cannot be extended, which causes discomfort to the patients. In addition, the poor extensibility leads to easy falling of the product, reduces the use time of the product, increases the frequency of changing the dressing, increases the cost of the patients, and lacks a visual feedback mechanism, which makes it difficult for medical staff to judge the replacement time and increases the risk of infection. SUMMARY

[0004] The purpose of the present application is to solve the defects in the prior art that the extensibility is poor when in use, the product cannot be extended when used on joint parts or uneven parts of patients, which causes discomfort to the patients, and the poor extensibility leads to easy falling of the product, reduces the use time of the product, increases the frequency of changing the dressing, increases the cost of the patients, and lacks a visual feedback mechanism, which makes it difficult for medical staff to judge the replacement time and increases the risk of infection, and a negative pressure drainage patch with abdominal core belt cut is proposed.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] The negative pressure drainage patch with abdominal core belt cut comprises: a drainage patch main body, a negative pressure interface for connecting a negative pressure drainage device is arranged at the upper end of the drainage patch main body;

[0007] From top to bottom, it comprises:

[0008] A polyurethane film, a water-absorbing abdominal core is arranged at the lower end of the polyurethane film, a contact response layer for observing the liquid storage amount is arranged at the bottom of the water-absorbing abdominal core, a punched silicone gel tape is arranged at the lower end of the contact response layer, and a release film is arranged at the lower end of the punched silicone gel tape.

[0009] As a preferred scheme of the negative pressure drainage patch with abdominal core belt cut, the polyurethane film is provided with an array of drainage micro-holes, and the water-absorbing abdominal core is arranged below the polyurethane film and provided with a non-penetrating cut.

[0010] As a preferred scheme of the negative pressure drainage patch with abdominal core belt cut, the punched silicone gel tape is provided with through micro-holes, and the drainage micro-holes extend into the water-absorbing abdominal core in the form of a tapered channel.

[0011] As a preferred scheme of the negative pressure guiding patch with cut abdominal core band of the present application, wherein: the cut is radial, the main cut depth is greater than the branch cut depth, and an intact isolation interface is reserved between the cut bottom surface and the punched silica gel tape.

[0012] As a preferred scheme of the negative pressure guiding patch with cut abdominal core band of the present application, wherein: the inner wall of the guiding micropore is provided with a spiral guiding groove which is tapered from the top to the bottom of the hole.

[0013] As a preferred scheme of the negative pressure guiding patch with cut abdominal core band of the present application, wherein: the water-absorbing abdominal core is embedded with a pipe bundle, and the pipe bundle is filled with a fiber cloud.

[0014] As a preferred scheme of the negative pressure guiding patch with cut abdominal core band of the present application, wherein: the pipe bundle is a hydrophobic micro-pipe, the pipe wall of which is in communication with the guiding micropore, and the fiber cloud is a hydrophilic material.

[0015] As a preferred scheme of the negative pressure guiding patch with cut abdominal core band of the present application, wherein: the contact response layer comprises a transparent gel matrix which swells when encountering exudate, and the gel matrix is distributed with light-reflecting microparticles.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] Through the synergistic effect of the guiding micropore array of the polyurethane film and the spiral guiding groove, the liquid flows rapidly along the spiral path, and in combination with the radial cut of the water-absorbing abdominal core, the collection efficiency and diffusion uniformity of the exudate are significantly improved.

[0018] After the transparent gel of the contact response layer swells, the distance between the light-reflecting microparticles changes to form bright spots to warn, realizing real-time visual monitoring of the liquid accumulation amount and reducing the risk of replacement lag; the radial cut enhances the ductility of the abdominal core, adapts to joint movement, cooperates with the flexible fitting of the punched silica gel tape, reduces the risk of falling off, and improves the wearing comfort of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the negative pressure guiding patch with cut abdominal core band proposed in the present application;

[0020] Figure 2 It is a schematic view of the internal structure of the negative pressure guiding patch with cut abdominal core band proposed in the present application;

[0021] Figure 3 It is Figure 2 an enlarged structure schematic view of position A in the middle;

[0022] Figure 4 It is Figure 2 an enlarged structure schematic view of position B in the middle;

[0023] Figure 5 For Figure 2 Amplification structure schematic diagram at C;

[0024] Figure 6 Cut structure schematic diagram of the negative pressure drainage paste with cut abdominal core proposed by the application.

[0025] In the figure: 101, drainage paste body; 102, negative pressure interface; 103, polyurethane film; 1031, drainage micropore; 1032, groove; 104, water-absorbing abdominal core; 1041, cut; 1042, pipe bundle; 1043, fiber cloud cluster; 1044, negative pressure hole; 105, punched silica gel tape; 106, release film; 107, contact response layer; 1071, gel; 1072, light reflecting particle. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Referring to Figures 1-2 , the negative pressure drainage paste with cut abdominal core, including a drainage paste body 101, which is in the form of a sheet as a whole, used to cover the wound surface, the upper end of the drainage paste body 101 is provided with a negative pressure interface 102 for connecting to a negative pressure drainage device, considering that the negative pressure drainage needs to efficiently collect the exudate from the wound surface and prevent backflow, a multi-layer functional composite structure from top to bottom needs to be constructed, including: a polyurethane film 103, the lower end of the polyurethane film 103 is provided with a water-absorbing abdominal core 104 for absorbing and storing exudate, the bottom of the water-absorbing abdominal core 104 is provided with a contact response layer 107 for observing the liquid storage amount, used to sense the liquid penetration state, the lower end of the contact response layer 107 is provided with a punched silica gel tape 105, which is in direct contact with the skin, providing good biocompatibility and sealing performance, the lower end of the punched silica gel tape 105 is provided with a release film 106, which is a peelable layer, used to protect the punched silica gel tape 105 from being contaminated before use.

[0029] Referring to Figures 2-5, considering that the wound liquid needs to be quickly and uniformly introduced into the abdominal core, the capillary force needs to be enhanced, therefore, the polyurethane film 103 is distributed with an array of drainage micro-holes 1031, the drainage micro-holes 1031 extend into the water-absorbing abdominal core 104, and the water-absorbing abdominal core 104 is attached to the polyurethane film 103 below and is provided with a non-penetrating cutout 1041, and the polyurethane film 103 is provided with a negative pressure hole 1044 matched with the negative pressure interface 102, the extensibility of the product can be expanded through the cutout 1041, the comfort of the patient is increased, the product is not easy to fall off, the use time of the product is increased, the frequency of changing the dressing is reduced, and the treatment cost is reduced;

[0030] At the same time, the perforated silicone gel tape 105 is provided with through micro-holes, the cutout 1041 is radial, the main cutout depth is greater than the branch cutout depth, and a complete isolation interface is reserved between the bottom surface of the cutout 1041 and the perforated silicone gel tape 105, so as to prevent the liquid from directly contacting the skin or leaking;

[0031] In addition, the inner wall of the drainage micro-hole 1031 is provided with a groove 1032, the groove 1032 is in a spiral drainage shape, gradually tapered from the top of the hole to the bottom of the hole, and extends in a spiral shape, guiding the liquid to flow along the spiral path quickly, and improving the drainage efficiency.

[0032] Referring to Figure 4 , in order to improve the drainage speed and liquid storage capacity, the water-absorbing abdominal core 104 is embedded with a pipe bundle 1042, the pipe bundle 1042 is a hydrophobic micro-pipe, the pipe wall of which is in communication with the drainage micro-hole 1031, and is used for quickly transporting the liquid to the deep layer, and the pipe bundle 1042 is filled with a fiber cloud 1043, the fiber cloud 1043 is a hydrophilic material, and is used for efficiently locking the liquid and preventing back seepage.

[0033] Referring to Figure 5 , in order to monitor the accumulation degree of exudate and determine the replacement time, a contact response layer 107 is needed, including a transparent gel 1071 matrix that swells when encountering exudate, and light reflecting particles 1072 are distributed in the gel 1071, when the gel 1071 swells by absorbing water, the particle spacing changes, causing the local light intensity to change, forming a visual bright spot area, directly showing the liquid penetration range and accumulation degree.

[0034] In summary, the working principle of the scheme is as follows:

[0035] When the exudate diffuses upward through the through micro-holes of the perforated silicon gel tape layer 105, the transparent gel 1071 of the contact response layer 107 is triggered to expand, causing the distance between the light-reflecting particles 1072 to increase, and a visual bright spot warning is formed on the surface. The liquid then enters the water-absorbing core layer 104, is quickly transported to the deep core layer by the hydrophobic tube bundle 1042, and is absorbed and stored by the hydrophilic fiber cloud 1043 and prevented from backflowing. After the negative pressure device is connected to the negative pressure interface 102, the liquid flows along the radial incision 1041 of the core to the negative pressure hole 1044, and is accelerated upward and discharged through the spiral guide micro-holes 1031 of the polyurethane film 103. The network of the radial incision 1041 enhances the extensibility of the core, and adapts to joint movement; the composite structure of the tube bundle 1042 and the fiber cloud 1043 realizes the effects of high-speed flow guiding and liquid locking and anti-backflow; the contact response layer 107 accurately prompts the replacement time through the optical bright spot, and finally forms the synergistic effect of efficient drainage, intelligent monitoring and dynamic fitting.

[0036] It is worth noting that the entire device is controlled by the controller, and since the controller is a commonly used device, it belongs to existing mature technology, and its electrical connection relationship and specific circuit structure will not be described here.

[0037] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. In the description of the present application, it should be noted that the terms "up, down, inside and outside" indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first, second or third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

Claims

1. A negative pressure wound therapy dressing comprising: The negative pressure interface (102) is arranged at the upper end of the drainage patch body (101) for connecting with a negative pressure drainage device. The drainage patch body (101) comprises, from top to bottom: The polyurethane film (103) is provided with a water-absorbing abdominal core (104) at the lower end, the water-absorbing abdominal core (104) is provided with a contact response layer (107) at the bottom for observing the liquid storage amount, the contact response layer (107) is provided with a perforated silica gel tape (105) at the lower end, and the perforated silica gel tape (105) is provided with a release film (106) at the lower end.

2. The abdominal core bandage negative pressure wound therapy dressing of claim 1, wherein: The polyurethane film (103) is provided with an array of drainage micropores (1031), the water-absorbing abdominal core (104) is attached below the polyurethane film (103) and is provided with non-penetrating notches (1041).

3. The abdominal core bandage negative pressure wound therapy dressing of claim 2, wherein: The perforated silica gel tape (105) is provided with through micropores, the drainage micropores (1031) extend into the water-absorbing abdominal core (104) in the form of a tapered channel.

4. The abdominal core bandage negative pressure wound therapy dressing of claim 2, wherein: The notches (1041) are radial, the depth of the main notch (1041) is greater than that of the branch notches (1041), and an intact isolation interface is reserved between the bottom surface of the notches (1041) and the perforated silica gel tape (105).

5. The abdominal core bandage negative pressure wound therapy dressing of claim 2, wherein: The inner wall of the drainage micropore (1031) is provided with a groove (1032) in the form of a spiral drainage, which is tapered from the top of the hole to the bottom of the hole.

6. The abdominal core bandage negative pressure wound therapy dressing of claim 1, wherein: The water-absorbing abdominal core (104) is embedded with a pipe bundle (1042), and the pipe bundle (1042) is filled with a fiber cloud (1043).

7. The abdominal core bandage negative pressure wound therapy dressing of claim 6, wherein: The pipe bundle (1042) is a hydrophobic micro-pipe, and the wall of the pipe bundle (1042) is in communication with the drainage micropore (1031), and the fiber cloud (1043) is a hydrophilic material.

8. The abdominal core bandage negative pressure wound therapy dressing of claim 1, wherein: The contact response layer (107) comprises a matrix of transparent gel (1071) that swells when encountering exudate, and the gel (1071) is provided with light-reflecting microparticles (1072).

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