CN213525896U - Negative pressure wound dressing - Google Patents
Negative pressure wound dressing Download PDFInfo
- Publication number
- CN213525896U CN213525896U CN202021135546.5U CN202021135546U CN213525896U CN 213525896 U CN213525896 U CN 213525896U CN 202021135546 U CN202021135546 U CN 202021135546U CN 213525896 U CN213525896 U CN 213525896U
- Authority
- CN
- China
- Prior art keywords
- layer
- negative pressure
- dressing
- air guide
- wound dressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model relates to a negative pressure wound dressing relates to negative pressure wound dressing field, including dressing body and the subassembly of breathing in, dressing body from the top down is in proper order including the ventilated membrane that blocks water, waterproof backing layer, first air guide supporting layer, the imbibition layer, second air guide supporting layer, the wound contact layer, from the type layer, waterproof backing layer has seted up the connecting hole, the subassembly of breathing in is including setting up the sucking disc on the ventilated membrane that blocks water, luer connects, the stagnant water presss from both sides and is used for connecting the pipe in negative pressure source, the sucking disc sets up on the ventilated membrane that blocks water and corresponding with the connecting hole position, luer connects one end and the sucking disc is connected, luer connects other end. The structure of negative pressure wound dressing can effectively improve the problem that the air circuit is blocked by the seepage liquid and the air leakage at the edge of the dressing easily occurs in the clinical use process of the existing negative pressure dressing, and reduce the probability that the negative pressure can not be maintained and the problems such as treatment effect are influenced due to the blockage of the air circuit of the dressing and the air leakage at the edge.
Description
Technical Field
The utility model relates to a negative pressure wound dressing field especially relates to negative pressure wound dressing.
Background
Negative Pressure Wound Therapy (NPWT) is a new method of accelerating wound healing that has emerged in recent years by applying negative pressure to a wound, which causes mechanical contraction of the wound and removal of wound exudate, promotes the formation of granulation tissue and accelerates wound healing. Negative pressure wound therapy has been widely used to treat a range of difficult wounds, including acute, chronic, and infectious wounds. The negative pressure wound therapy technology uses a negative pressure dressing to be attached to a wound, the negative pressure dressing is connected with a negative pressure source through a conduit, the negative pressure source provides negative pressure, wound exudate is removed under the action of the negative pressure, the stimulation of the exudate to the wound surface is reduced, and good local conditions are provided for wound healing. However, in this process, seepage is easy to block the air passage, and at the same time, the edge of the negative pressure dressing has a certain air leakage probability, so that the negative pressure cannot be maintained, and the treatment effect is affected.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a negative pressure wound dressing, includes the dressing body and the subassembly of breathing in, dressing body from the top down in proper order including the ventilated membrane that blocks water, waterproof backing layer, first air guide supporting layer, imbibition layer, second air guide supporting layer, wound contact layer, from the type layer, the connecting hole has been seted up to waterproof backing layer, and the ventilated membrane that blocks water corresponds the connecting hole and is equipped with the subassembly of breathing in, and the subassembly of breathing in is including setting up sucking disc, luer joint, the stagnant water on the ventilated membrane that blocks water and pressing from both sides and be used for connecting the pipe of negative pressure source, the sucking disc sets up on the ventilated membrane that blocks water and corresponding with the connecting hole position, luer joint one end is. The waterproof backing layer is provided with a connection hole to help apply negative pressure to the wound of the patient, a water stop clip is provided on the catheter to help block the catheter after treatment is over,
further, the area of the liquid absorbing layer is smaller than that of the first air guide supporting layer, and the area of the liquid absorbing layer is smaller than that of the second air guide supporting layer. Because the imbibition layer size is less than first air guide supporting layer and second air guide supporting layer, because the negative pressure (being equivalent to a suction) that the negative pressure source produced, can be with gas and imbibition, at first gas can get into wound contact layer and second air guide supporting layer, the imbibition layer is great to the gas resistance, and gas is difficult for passing through, and most gas can get into first air guide supporting layer from imbibition layer both sides to reduce the probability that blocks up the gas circuit and take place, maintain that the negative pressure is stable.
Further, the liquid absorbent layer is one of a polymer absorbent resin or hydrophilic fibers. The liquid absorption layer has water absorption, gas is not easy to pass through, and tissue fluid at the wound of the patient is precipitated by negative pressure and then is stored in the liquid absorption layer.
Further, the wound contact layer is silica gel with meshes, two ends of the wound contact layer are bonded with the waterproof backing layer, and the area of the wound contact layer is smaller than or equal to that of the waterproof backing layer. The wound contact layer is self-adhesive, and through silica gel adhesion at the wound, form the negative pressure space with waterproof backing layer, silica gel layer and wound viscidity are mild, when preventing gas leakage, can ensure can not the adhesion wound when removing the dressing, avoid wound secondary damage, can repeatedly reveal adhesion again.
Further, it leaves the type membrane to include hem from the type membrane and straight flange from the type membrane from the type layer, the hem leaves the type membrane and covers in wound contact layer one end earlier, the straight flange leaves the type membrane and covers in the other end of wound contact layer, the straight flange leaves type membrane one end and the hem department of hem from the type membrane and folds mutually and press. The hem of the hem release film is contacted with one end of the straight-edge release film, so that the straight edge is tilted from one section of the release film, and the hem release film and the straight-edge release film can be conveniently torn off.
Further, the water-blocking breathable film is covered at the center of the waterproof backing layer, and the diameter of the water-blocking breathable film is larger than that of the connecting hole. The waterproof breathable film is positioned on the waterproof backing layer and covers the connecting hole, the waterproof breathable film enables gas to flow, and liquid, particles and pathogens cannot pass through the waterproof breathable layer.
Further, the first air guide supporting layer and the second air guide supporting layer are both 3D terylene mesh layers. The 3D polyester mesh fabric layer is low in water absorption rate and good in strength.
Further, the water-blocking and breathable film is a PTFE film. The PTFE film is breathable and waterproof, and can make gas uniformly flow.
Further, the waterproof backing layer is a PU film. The PU film has the advantages of no water absorption, no water seepage, no deformation and mildew resistance.
The utility model discloses a theory of operation does: when the negative pressure source starts, the seepage liquid contacts the liquid absorbing layer and is absorbed through the second air guide supporting layer, the gas enters the first air guide supporting layer from the two sides of the liquid absorbing layer, and the gas enters the sucker through the connecting hole of the waterproof backing layer and the water-blocking breathable film and is discharged to an external instrument through the guide pipe. When the negative pressure source starts, the sepage passes through the contact of second air guide supporting layer to the imbibition layer and is absorbed, and the imbibition layer gas of absorption sepage is difficult for passing through, because imbibition layer size is less than first air guide supporting layer and second air guide supporting layer, most gas gets into first air guide supporting layer from imbibition layer both sides, can effectively reduce the probability that the sepage blockked up the gas circuit, maintains wound surface of a wound negative pressure stable.
The utility model has the advantages that: the structure of negative pressure wound dressing can effectively improve the problem that the air circuit is blocked by the seepage liquid and the air leakage at the edge of the dressing easily occurs in the clinical use process of the existing negative pressure dressing, and reduce the probability that the negative pressure can not be maintained and the problems such as treatment effect are influenced due to the blockage of the air circuit of the dressing and the air leakage at the edge.
Drawings
The figures further illustrate the invention, but the embodiments in the figures do not constitute any limitation of the invention.
Fig. 1 is a schematic structural view of a negative pressure wound dressing according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dressing body according to an embodiment of the present invention.
The labels in the figure are: the wound dressing comprises a water-blocking breathable film 1, a waterproof backing layer 2, a first air guide supporting layer 3, a liquid absorbing layer 4, a second air guide supporting layer 5, a wound contact layer 6, a release layer 7, a sucking disc 8, a guide pipe 9, a water-stopping clamp 10 and a luer connector 11.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
In the present invention, unless otherwise specified, the terms of orientation such as "up, down, left, and right" used herein generally refer to up, down, left, and right as shown in fig. 1. "inner and outer" refer to the inner and outer portions of a particular contour. "distal and proximal" refer to distal and proximal relative to a component.
Example 1
As shown in fig. 1-2, an embodiment of the present invention provides a negative pressure wound dressing, comprising a dressing body and a suction assembly, the dressing body sequentially comprises a water-blocking breathable film 1, a waterproof backing layer 2, a first air guide supporting layer 3, a liquid absorbing layer 4, a second air guide supporting layer 5, a wound contact layer 6 and a release layer 7 from top to bottom, the waterproof backing layer 2 is provided with a connecting hole for fluidly connecting a negative pressure source, the water-blocking breathable film 1 is provided with a suction component corresponding to the connecting hole, the suction component comprises a sucker 8 arranged on the water-blocking breathable film 1, a luer connector 11, a water-stopping clamp 10 and a conduit 9 for connecting the negative pressure source, the sucking disc 8 is arranged on the water-blocking breathable film 1 and corresponds to the connecting hole, one end of the luer connector 11 is connected with the sucking disc 8, the other end of the luer connector 11 is connected with a conduit 9, and a water stop clamp 10 is arranged on the conduit 9. The waterproof backing layer 2 is provided with connection holes to assist in applying negative pressure to the wound of the patient,
the source of negative pressure may be selected as desired, which may be, for example, but not limited to, a negative pressure pump for generating negative pressure.
The area of the liquid absorbing layer 4 is smaller than that of the first air guide supporting layer 3, and the area of the liquid absorbing layer 4 is smaller than that of the second air guide supporting layer 5. Because the liquid absorbing layer 4 size is less than first air guide supporting layer 3 and second air guide supporting layer 5, the gas gets into second air guide supporting layer 5 from liquid absorbing layer 4 both sides, can effectively reduce the probability that the gas circuit was blockked up in the sepage, maintains wound surface of a wound negative pressure stable.
The liquid absorbent layer 4 is one of a polymer absorbent resin and hydrophilic fibers. The liquid absorbent layer 4 has water absorption property, and gas is not easily passed through, and tissue fluid at the wound of the patient is deposited by negative pressure and stored in the liquid absorbent layer 4.
The wound contact layer 6 is silica gel with meshes, two ends of the wound contact layer 6 are adhered to the waterproof backing layer 2, and the area of the wound contact layer 6 is equal to that of the waterproof backing layer 2. Wound contact layer 6 is for having the autohension, through the silica gel adhesion at the wound, forms the negative pressure space with waterproof backing layer 2, and the silica gel layer is gentle with wound viscidity, when preventing gas leakage, can ensure can not the adhesion wound when removing the dressing, avoids wound secondary damage, can repeatedly reveal adhesion again.
From type layer 7 including the hem from type membrane and straight flange from type membrane, the hem covers in 6 one ends of wound contact layer earlier from type membrane, the straight flange covers in the other end of wound contact layer 6 from type membrane, the straight flange is folded from type membrane one end and the hem department of hem from type membrane and is pressed mutually. The hem of the hem release film is contacted with one end of the straight-edge release film, so that the straight edge is tilted from one section of the release film, and the hem release film and the straight-edge release film can be conveniently torn off.
The waterproof and breathable film 1 is covered at the central position of the waterproof backing layer 2, and the diameter of the waterproof and breathable film 1 is larger than that of the connecting hole. The waterproof breathable film 1 is positioned on the waterproof backing layer 2, the waterproof breathable film 1 covers the connecting hole, the waterproof breathable film 1 enables gas to flow, and liquid, particles and pathogens cannot pass through the waterproof breathable film.
The first air guide supporting layer 3 and the second air guide supporting layer 5 are both 3D terylene mesh layers. The 3D polyester mesh fabric layer is low in water absorption rate and good in strength.
The water-blocking breathable film 1 is a PTFE film. The PTFE film is breathable and waterproof, and can make gas uniformly flow.
The waterproof backing layer 2 is a PU film. The PU film has the advantages of no water absorption, no water seepage, no deformation and mildew resistance.
The use method of the negative pressure wound dressing comprises the following steps: 1) One end of the conduit 9 is fixedly connected with a negative pressure source in a sealing way; 2) the edgewise and straight-sided release films of the release layer 7 are removed from the wound contact layer 6 to use the dressing; 3) after the wound contact layer 6 is exposed, the wound contact layer 6 is attached to the wound of the patient; 4) removing the water stop clip 10 from the catheter 9 for use of the dressing; 5) turning on a power supply, turning on a negative pressure source, applying negative pressure to the dressing through the conduit 9 by the negative pressure source, and treating the wound through the negative pressure wound dressing; 6) after the wound treatment is finished, the water stop clamp 10 is moved to the guide pipe 9 to block the guide pipe 9, the negative pressure source is stopped, and then the negative pressure wound dressing is taken down from the wound of the patient needing the treatment.
Example 2
In some embodiments, the wound contact layer 6 has an area smaller than the area of the waterproof backing layer 2, and the edge of the waterproof backing layer 2 is adhered to the skin of the patient by a medical adhesive.
Example 3
In some embodiments, the wound contact layer 6 has an area smaller than the area of the waterproof backing layer 2, and the waterproof backing layer 2 is adhered to the skin of the patient by medical tape.
Example 4
In some embodiments, the wound contact layer 6 may be composed of a material having water and gas permeable properties and a meshed silicone gel.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. A negative pressure wound dressing, characterized by: including dressing body and subassembly of breathing in, dressing body from the top down includes in proper order that the ventilated membrane that blocks water, waterproof backing layer, first air guide supporting layer, imbibition layer, second air guide supporting layer, wound contact layer, from the type layer, waterproof backing layer has seted up the connecting hole, and the ventilated membrane that blocks water corresponds the connecting hole and is equipped with the subassembly of breathing in, and the subassembly of breathing in is including setting up sucking disc, the luer joint on the ventilated membrane that blocks water, the stagnant water presss from both sides and the pipe that is used for connecting the negative pressure source, the sucking disc sets up on the ventilated membrane that blocks water and corresponding with the connecting hole position, luer joint one end is connected with the sucking disc.
2. The negative pressure wound dressing of claim 1, wherein: the area of the liquid absorbing layer is smaller than that of the first air guide supporting layer, and the area of the liquid absorbing layer is smaller than that of the second air guide supporting layer.
3. The negative pressure wound dressing of claim 1, wherein: the liquid absorbing layer is one of macromolecule absorption resin or hydrophilic fiber.
4. The negative pressure wound dressing of claim 1, wherein: the wound contact layer is silica gel with meshes, two ends of the wound contact layer are bonded with the waterproof backing layer, and the area of the wound contact layer is smaller than or equal to that of the waterproof backing layer.
5. The negative pressure wound dressing of claim 1, wherein: the release layer comprises a folded edge release film and a straight edge release film, the folded edge release film covers one end of the wound contact layer, the straight edge release film covers the other end of the wound contact layer, and one end of the straight edge release film and the folded edge of the folded edge release film are overlapped.
6. The negative pressure wound dressing of claim 1, wherein: the waterproof and breathable film is covered at the central position of the waterproof backing layer, and the diameter of the waterproof and breathable film is larger than that of the connecting hole.
7. The negative pressure wound dressing of claim 1, wherein: the first air guide supporting layer and the second air guide supporting layer are both 3D terylene mesh layers.
8. The negative pressure wound dressing of claim 1, wherein: the water-blocking breathable film is a PTFE film.
9. The negative pressure wound dressing of claim 1, wherein: the waterproof backing layer is a PU film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021135546.5U CN213525896U (en) | 2020-06-18 | 2020-06-18 | Negative pressure wound dressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021135546.5U CN213525896U (en) | 2020-06-18 | 2020-06-18 | Negative pressure wound dressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213525896U true CN213525896U (en) | 2021-06-25 |
Family
ID=76475347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021135546.5U Active CN213525896U (en) | 2020-06-18 | 2020-06-18 | Negative pressure wound dressing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213525896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114569330A (en) * | 2022-01-24 | 2022-06-03 | 惠州华阳医疗器械有限公司 | Wound dressing and negative pressure wound therapy device |
-
2020
- 2020-06-18 CN CN202021135546.5U patent/CN213525896U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114569330A (en) * | 2022-01-24 | 2022-06-03 | 惠州华阳医疗器械有限公司 | Wound dressing and negative pressure wound therapy device |
| WO2023137879A1 (en) * | 2022-01-24 | 2023-07-27 | 惠州华阳医疗器械有限公司 | Wound dressing and negative pressure wound treatment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11957546B2 (en) | Dressing with fluid acquisition and distribution characteristics | |
| US11864980B2 (en) | Medical system and dressing for use under compression | |
| US20230201042A1 (en) | Hybrid drape having a gel-coated perforated mesh | |
| JP7000419B2 (en) | Medical systems and dressings used under pressure | |
| JP6293824B2 (en) | Dressing and system providing decompression therapy | |
| EP2293840B1 (en) | Negative pressure wound therapy device | |
| US20110034892A1 (en) | Passive wound therapy device | |
| JP2020523082A (en) | Composite dressing to promote granulation and reduce maceration during negative pressure treatment | |
| JP2020523077A (en) | Composite dressing for promoting granulation and reducing maceration by negative pressure treatment | |
| AU2016342564B2 (en) | Wound dressing | |
| CN213525896U (en) | Negative pressure wound dressing | |
| JP2022532492A (en) | Dressing material that enables improved joint movement due to its strategic shape | |
| JP7505092B2 (en) | Peel-and-stick dressing for thick exudates and drips | |
| US20240099897A1 (en) | Medical System And Dressing For Use Under Compression | |
| US20220395400A1 (en) | Dressings With Polymer Delivery | |
| CN209108370U (en) | Intrathoracic drain pad pasting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |