CN210991140U

CN210991140U - Medical dressing plaster

Info

Publication number: CN210991140U
Application number: CN201920843214.3U
Authority: CN
Inventors: 庞雪丽; 赵瑾; 张前前; 陈铭洲; 钱一新
Original assignee: Suzhou Science and Technology Town Hospital
Current assignee: Suzhou Science and Technology Town Hospital
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-07-14
Anticipated expiration: 2029-06-05

Abstract

The utility model belongs to the technical field of medical supplies, concretely relates to medical dressing subsides. The utility model provides a medical dressing subsides include contact layer, absorbed layer and protective layer. The contact layer is provided with a repairing layer and an adhesive layer, the absorption layer is provided with a liquid absorption layer and a water locking layer, and the repairing layer, the liquid absorption layer and the water locking layer are provided with air holes communicated with each other. The medical dressing patch is a self-adhesive dressing, can be stably fixed on a wound surface, and is particularly suitable for the situation that the dressing needs to be lifted and changed for many times; the repairing layer is directly contacted with the wound surface, which is beneficial to the regeneration and recovery of the wound surface tissue and prevents the granulation tissue of the wound surface from entering the absorbing layer and not adhering to the wound surface; the imbibition layer can absorb a large amount of exudates, and the exudate that the lock water layer can absorb in the imbibition layer fast and "pin" it to make the imbibition layer continue to absorb the exudates fast, not only promoted the imbibition ability of imbibition layer, still promoted the imbibition rate of imbibition layer, the medical dressing subsides of this structure still have good gas permeability simultaneously.

Description

Medical dressing plaster

Technical Field

The utility model belongs to the technical field of medical supplies, concretely relates to medical dressing subsides.

Background

The skin is the first immune barrier of human beings, and when skin wounds, burns or ulcers, the skin wound surface often produces exudates, pus, toxins and the like, wherein the exudates contain a large amount of inflammatory factors, protease, free radicals and the like, and if the exudates stay on the surface of the skin for a long time, the recovery of the wound surface can be slowed down. The medical dressing is suitable for the granulation period of the wound surface, can absorb redundant wound surface effusion, can obstruct external foreign matters and partial bacteria, protects exposed nerve endings and relieves pain.

At present, the medical dressings clinically used for nursing mainly comprise common gauze dressings and foam dressings. The ordinary gauze dressing has low price and single function, such as: absorbent gauze has good hygroscopicity, but is easy to adhere to the wound surface; the vaseline gauze is not adhered to the wound surface, but has no antibacterial property; saline wet yarn is good in antibacterial property, but poor in hygroscopicity.

Compared with the common gauze dressing, the foam dressing is the most widely applied medical dressing at present due to the advantages of no adhesion with the wound surface, good antibacterial property, superior liquid absorption performance to the common gauze dressing and the like. Most of the clinically common polyurethane foam dressings are polyurethane foam dressings, and the outer layer of the dressings is a polyurethane film to prevent the invasion of microorganisms; the middle layer (absorption layer) is made of polyurethane foam, and has high water absorption rate; the inner layer is a polyurethane film on which a large number of micropores with diameters smaller than 20 microns are distributed so as to prevent new epithelial cells from growing into the pores. However, the polyurethane foam dressing with the structure has poor air permeability, and the wound surface becomes white and even ulcerated after being contacted with the wound surface for a long time, so that granulation is not favorably formed; in addition, the liquid absorption capacity and the liquid absorption speed are limited, the wound surface exudate needs to be replaced in time when the wound surface exudate is more, the exudate is easy to pollute the wound surface if the wound surface exudate is not replaced in time, and the polyurethane foam dressing in the market has higher price, so that the economic burden is increased for patients; in addition, the external structure is single, for patients who need to insert tracheal cannula and introduce drainage tubes for operations such as chest and abdomen, etc. in tracheotomy, the foam dressing needs to be cut into a shape with holes in the middle, the workload of medical workers is increased, and the scissors and other instruments used for cutting need to be disinfected repeatedly, so that the resource waste is caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem of main solution is overcoming current foam dressing can lead to the surface of a wound whitening or even fester, exudate can not be completely and quick absorption, defect high price to a medical dressing subsides that the gas permeability is good, the imbibition ability is better and the imbibition speed is fast, low cost is provided.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a medical dressing plaster, which comprises a contact layer, an absorption layer and a protective layer;

the contact layer is provided with a repairing layer which is in contact with a wound surface and an adhesive layer which is arranged on the surface of one side of the repairing layer and is used for adhering and fixing the medical dressing;

the absorption layer is provided with a liquid absorption layer arranged on the surface of the other side, far away from the sticking layer, of the repairing layer and a water locking layer arranged on the surface of one side, far away from the repairing layer, of the liquid absorption layer;

the protective layer is arranged on the surface of one side, away from the contact layer, of the absorption layer;

the repairing layer, the absorbing layer and the protective layer are provided with air holes communicated with each other.

Preferably, the medical dressing patch with the structure is characterized in that the pasting layer is of an annular structure, and the outermost side edge of the annular structure of the pasting layer is flush with the outermost side edge of the repairing layer; the thickness of the sticking layer is gradually reduced to zero from the outermost edge of the annular structure to the innermost edge of the annular structure.

Further preferably, the thickness of the outermost edge of the annular structure of the adhesive layer is 0.05-5 mm, and the width from the outermost edge of the annular structure of the adhesive layer to the innermost edge of the annular structure of the adhesive layer is 1-50 mm.

Preferably, the thickness of the repair layer of the medical dressing patch with the structure is 0.05-5 mm.

Preferably, the medical dressing patch with the structure has the liquid absorption layer with the thickness of 2-5 mm; the thickness of the water locking layer is 1-5 mm, and the pore diameter of the air hole of the water locking layer is 2-15 times of the thickness of the water locking layer.

Preferably, the medical dressing patch of this structure still includes the through-hole that runs through contact layer, absorbent layer and protective layer and the opening that communicates through-hole and medical dressing patch edge.

Preferably, the medical dressing patch of the structure has any one of a rectangular shape, a circular shape, a rhombic shape and an oval shape.

Preferably, the medical dressing patch of the structure has a release layer arranged on the surface of the contact layer, which is far away from the protective layer.

Preferably, the medical dressing patch of the structure has the advantages that the adhesive layer is a silicone gel layer or a CMC hydrogel layer;

the repairing layer is a degradable polylactic acid layer;

the liquid absorbing layer is an aqueous polyurethane foam layer;

the water-locking layer is an acrylamide-cellulose graft copolymer layer.

Further preferably, the medical dressing patch of the structure has the protective layer made of transparent polyurethane film.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a medical dressing paste, which comprises a contact layer, an absorption layer and a protective layer. The contact layer is provided with a repairing layer which is in contact with the wound surface and an adhesive layer which is arranged on the surface of one side of the repairing layer and is used for adhering and fixing the medical dressing; the absorbing layer is provided with a liquid absorbing layer arranged on the surface of the other side of the repairing layer far away from the sticking layer and a water locking layer arranged on the surface of one side of the liquid absorbing layer far away from the repairing layer, and the repairing layer, the liquid absorbing layer and the water locking layer are provided with air holes communicated with each other.

The medical dressing patch with the structure is self-adhesive dressing, can be stably fixed on the wound surface of a patient, does not need to be additionally provided with a fixing device, and is particularly suitable for the situation that the dressing needs to be lifted and changed for many times; the repairing layer is directly contacted with the wound surface, which is beneficial to the regeneration and recovery of the wound surface tissue and prevents the granulation tissue of the wound surface from entering the absorbing layer and not adhering the wound surface; the imbibition layer can absorb a large amount of exudates, and the imbibition layer can absorb the exudates in the imbibition layer fast and "pin" it to impel the imbibition layer to continue absorbing the exudates fast, has promoted the imbibition ability and the imbibition rate of imbibition layer, thereby makes the contact layer surface almost not have the exudates to remain, reduces the manual work and cleans the number of times. The repairing layer, the liquid absorbing layer and the protective layer are provided with air holes which are communicated, so that the air permeability of the medical dressing patch is improved.

2. The utility model provides a medical dressing pastes, pastes the layer and is the loop configuration to make restoration layer central zone expose and attach on the surface of a wound better.

The thickness of the sticking layer is gradually reduced to zero from the outermost side edge of the annular structure to the innermost side edge of the annular structure so as to be in smooth transition with the repairing layer, so that the comfort level of a patient is improved; the outer side edge of the annular structure is thicker, so that the pressure on the wound surface is increased, the annular structure is tightly adhered to the wound surface to form a closed wound surface environment, the invasion of bacteria is avoided, the side leakage of exudate is prevented, and the dressing change time is long (7-10 days).

3. The medical dressing patch provided by the utility model has the advantages that the water locking layer can vertically absorb the exudate in the imbibing weighing layer and lock the exudate, so that the skin around the wound surface can not be soaked, and complications are reduced; the water locking layer has air holes, so that the absorbing layer is ensured to have stronger liquid absorbing capacity and faster liquid absorbing speed, the whole air permeability of the medical dressing patch can be improved, the respiration of the wound surface is facilitated, and the healing of the wound surface is promoted.

4. The utility model provides a medical dressing subsides, still including the through-hole that runs through contact layer, absorbed layer and protective layer and the opening at this through-hole of intercommunication and medical dressing subsides edge, be suitable for autogenous cutting operation and need insert the patient that trachea cannula and operations such as chest, belly need introduce the drainage tube, can realize carrying out good sealing to trachea cannula or drainage tube periphery, effectively prevent exudate and sputum seepage, need not to carry out artifical pruning, resources are saved.

5. The utility model provides a medical dressing subsides, the one deck that the protective layer was kept away from to the contact layer is provided with from the type layer on the surface, and protection surface of a wound contact layer surface does not receive the pollution, uncovers from the type layer and can use, and is simple and easy.

6. The utility model provides a medical dressing pastes, pastes the layer and is silicone gel layer or CMC hydrocolloid layer, and the restoration layer is degradable polylactic acid layer, and the imbibition layer is waterborne polyurethane foam layer, and the lock water layer is acrylamide-cellulose graft copolymer layer.

The silicone gel layer has good effect of inhibiting the growth of scars; the CMC hydrocolloid layer can promote the proliferation of microvessels and the formation of granulation tissues, so that the healing of a wound surface is accelerated; the degradable polylactic acid layer can be degraded to different degrees according to the secretion of exudates at different parts of the wound surface, so that the healing degree of skin growth at different parts of the wound surface is controlled, and the effect of reducing scars is achieved finally; the water-based polyurethane foam layer and the acrylamide-cellulose graft copolymer layer are both compounds with very good moisture absorption performance, and have strong liquid absorption capacity and high liquid absorption speed. Moreover, the materials are wide in source, low in price and easy to obtain, and the manufacturing cost of the medical dressing patch is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic sectional view of a medical dressing patch according to embodiment 1 of the present invention;

FIG. 2 is a schematic top view (from the contact layer side) of FIG. 1;

description of reference numerals:

1-a release layer; 2-a contact layer; 21-sticking layer; 22-repair layer; 3-an absorbing layer; 31-a liquid absorption layer; 32-locked water layer; 4-a protective layer; 5-a through hole; 6-opening.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The embodiment provides a medical dressing patch, as shown in fig. 1, which is a multi-film structure with a rectangular shape, and includes a release layer 1, a contact layer 2, an absorption layer 3, a protection layer 4, a through hole 5 and an opening 6.

As shown in fig. 1, the release layer 1 is disposed on a surface of the contact layer 2 away from the absorption layer 3 to protect the contact layer 2 from contamination. The release layer 1 is composed of two half film layers, the two half film layers are butted at the middle part of the surface of the contact layer 2 to form a superposition part, and the contact layer can be used after being uncovered by the superposition part, thus being simple and easy to implement.

As shown in fig. 1 and fig. 2, the contact layer 2 has an adhesive layer 21 and a repair layer 22, the adhesive layer 21 is disposed on a surface of the repair layer 22 facing the release layer 1, so as to fix the medical dressing on the wound of a patient, and make the repair layer 22 directly contact with the wound to promote regeneration and rehabilitation of the wound tissue.

The pasting layer 21 is an annular structure, the outermost edge of the annular structure is parallel to the corresponding innermost edge, and the outermost edge of the annular structure is flush with the outermost edge of the repairing layer 22. The thickness of the adhesive layer 21 is gradually reduced to zero from the outermost edge of the annular structure to the innermost edge of the annular structure, so as to smoothly transition with the repair layer 22, and improve the comfort of the patient. The adhesive layer 21 is a CMC hydrocolloid layer, and can promote the proliferation of microvessels and the formation of granulation tissues, so that the healing of a wound surface is accelerated; the thickness of the outermost side edge of the annular structure of the sticking layer 21 is 1mm, the width from the outermost side edge of the annular structure to the innermost side edge of the annular structure is 5mm, the outer side edge of the annular structure is thicker, the pressure on a wound surface is increased, the sticking layer is tightly stuck with the wound surface to form a closed wound surface environment, the invasion of bacteria is avoided, the side leakage of wound surface exudate is prevented, and the dressing change time is prolonged (7-10 days).

The repairing layer 22 is a degradable polylactic acid layer with pores (not shown in the figure), and the degradable polylactic acid layer can be degraded to different degrees according to the secretion of exudates at different parts of the wound surface, so as to control the healing degree of skin growth at different parts of the wound surface and finally achieve the effect of reducing scars; the air holes are beneficial to the respiration of the wound surface and promote the healing of the wound surface; the repair layer 22 has a thickness of 1 mm.

As shown in fig. 1, the absorbent layer 3 has a liquid absorbent layer 31 and a water-locking layer 32.

The liquid absorbing layer 31 is arranged on the surface of the other side of the repairing layer 22 away from the adhesive layer 21, and is used for absorbing wound exudate and keeping a slightly moist environment of the wound; the liquid absorbent layer 31 is an aqueous polyurethane foam layer and has pores, and after being bonded to the repair layer 22, the pores of the two layers are communicated with each other (not shown in the figure); the liquid absorbent layer 31 had a thickness of 2 mm.

The water locking layer 32 is arranged on the surface of one side of the liquid absorption layer 31 far away from the repairing layer 22, the water locking layer 32 is an acrylamide-cellulose graft copolymer layer with air holes, the liquid absorption capacity of the water locking layer is extremely strong (stronger than the material of the liquid absorption layer 31), and the water locking layer can rapidly and vertically absorb the percolate in the liquid absorption layer 31 and lock the percolate so as to promote the liquid absorption layer 31 to continuously and rapidly absorb the percolate, so that the liquid absorption capacity of the liquid absorption layer 31 is improved, and the liquid absorption rate of the liquid absorption layer 31 is also improved. The thickness of the water locking layer 32 is 2mm, the pore diameter of the pores of the water locking layer 32 is 4mm, and the pores are communicated with the pores of the repair layer 22 and the liquid absorption layer 31 (not shown in the figure), so that the air permeability of the medical dressing patch is improved to promote wound healing, and the pores are not blocked even after water absorption and expansion.

As shown in fig. 1, the protective layer 4 is arranged on the surface of the water-locking layer 32 far away from the liquid-absorbing layer 31, the protective layer is a transparent polyurethane film layer with air holes, and the expansion condition of the water-locking layer 32 after absorbing liquid can be observed to judge whether to replace the medical dressing patch; the air holes of the protective layer 4 are communicated with the air holes of the repair layer 22 and the absorption layer 3 (not shown in the figure), so that the air permeability of the medical dressing patch is improved.

As shown in fig. 1 and 2, the medical dressing patch is provided with a through hole 5 and an opening 6, wherein the through hole 5 is positioned in the central part of the medical dressing patch and penetrates through the contact layer 2, the absorption layer 3 and the protective layer 4; the opening 6 is communicated with the through hole 5 and the edge of the medical dressing paste, and the edge of the opening 6 is in a butt-jointed zigzag structure. The medical dressing patch with the structure is suitable for patients who need to insert tracheal cannula and need to introduce a drainage tube in operations such as chest and abdomen during tracheotomy, the opening 6 can be opened manually during use, secondary trimming is not needed, consumption of sterile scissors is reduced, and the problem of infirm adhesion after trimming is avoided; after the tracheal cannula or the drainage tube is positioned, the opening 6 is closed, so that the periphery of the tracheal cannula or the drainage tube can be well sealed, the transudate and the sputum can be absorbed, the transudate and the sputum can be prevented from leaking, the tracheal cannula or the drainage tube can be effectively fixed, and the tracheal cannula or the drainage tube is not easy to bend and fall off.

Example 2

The present embodiment provides a medical dressing patch, which is different from embodiment 1 in that the patch layer 21 can also adopt a silicone gel layer, and can also play a role in fixing the medical dressing patch on the wound surface of a patient, and the silicone gel layer also has a function of well inhibiting scar growth.

Example 3

The present embodiment provides a medical dressing patch, which is different from embodiment 1 in that the medical dressing patch may be configured in other shapes such as a circle, a diamond, and an ellipse, and a medical dressing patch having an appropriate shape may be selected according to the shape of a wound surface and a position on a human body.

Example 4

The embodiment provides a medical dressing patch, which is different from the embodiment 1 in that the medical dressing patch can be provided with no through hole 5 or opening 6, and is suitable for situations of no cannula on a wound surface, such as abrasion, scald, ulcer and the like.

Example 5

The present embodiment provides a medical dressing patch, which is different from embodiment 1 in that the thickness of the liquid absorption layer 31 may be set to 3mm, 4mm, 5mm, or the like, and the thicker the liquid absorption layer 31 is, the stronger the liquid absorption capacity is, and an appropriate medical dressing patch can be selected according to the size of the exudate amount of the wound surface.

As a further variation of the alternative embodiment, the thickness of the water-locking layer 32 may also be set to 1mm, 3mm, 4mm, 5mm, etc., and the thicker the water-locking layer 32 is, the stronger the water-locking capacity is, and a suitable medical dressing patch may be selected according to the size of the exudate secretion of the wound exudate.

As a further modification of the alternative embodiment, the pore diameter of the water-locking layer 32 may be 3 times, 5 times, 10 times, 15 times, etc. of the thickness thereof, as long as the water-locking layer 32 swells by absorbing water without blocking the pores.

Example 6

The embodiment provides a medical dressing patch, which is different from embodiment 1 in that the thickness of the repair layer 22 can be set to be 0.05mm, 1.5mm, 2.5mm, 5mm and the like, the thicker the repair layer 22 is, the stronger the repair capability on the wound surface is, and a proper medical dressing patch can be selected according to the wound surface damage degree.

Example 7

Unlike example 1, the thickness of the outermost edge of the ring structure of the adhesive layer 21 may be set to 0.05, 2.5mm, or 5mm, and the width from the outermost edge of the ring structure to the innermost edge of the ring structure of the adhesive layer 21 may be set to 1mm, 10mm, 20mm, or 50 mm. The thicker the adhesive layer 21 is, the wider the adhesive layer is, the more closely the adhesive layer is to the wound surface, and the stronger the ability of preventing the transudate from leaking laterally, but the thicker the adhesive layer 21 is, the wider the adhesive layer is, the too large the oppression feeling to the pressure of the blood vessel of the wound surface is, and the adverse effect on the recovery of the wound surface is. Therefore, the medical dressing patch with the parameters of the structure of the adhesive layer 21 within the above ranges can be selected according to the size of the wound surface and the injury condition.

Example 8

The embodiment provides a medical dressing patch, which is different from embodiment 1 in that the adhesive layer 21 may also be an independent dot structure, a strip structure, or the like arranged on the surface of the repair layer 22, as long as the medical dressing patch can be fixed; however, from the perspective of preventing the wound exudate from leaking laterally, the adhesive layer 21 is configured as an annular structure, and the lateral leakage prevention effect is the best.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The medical dressing patch is characterized by comprising a contact layer, an absorption layer and a protective layer;

2. The medical dressing patch according to claim 1, wherein the patch layer is a ring-shaped structure, and the outermost edge of the ring-shaped structure of the patch layer is flush with the outermost edge of the repair layer; the thickness of the sticking layer is gradually reduced to zero from the outermost edge of the annular structure to the innermost edge of the annular structure.

3. The medical dressing patch as claimed in claim 2, wherein the thickness of the outermost edge of the annular structure of the patch layer is 0.05-5 mm, and the width from the outermost edge of the annular structure of the patch layer to the innermost edge of the annular structure of the patch layer is 1-50 mm.

4. The medical dressing patch according to any one of claims 1 to 3, wherein the repair layer has a thickness of 0.05 to 5 mm.

5. The medical dressing patch according to any one of claims 1 to 3, wherein the thickness of the liquid absorbent layer is 2 to 5 mm; the thickness of the water locking layer is 1-5 mm, and the pore diameter of the air hole of the water locking layer is 2-15 times of the thickness of the water locking layer.

6. The medical dressing patch according to any one of claims 1-3, further comprising a through hole passing through the contact layer, the absorbent layer and the protective layer and an opening communicating the through hole with an edge of the medical dressing patch.

7. The medical dressing patch according to any one of claims 1 to 3, wherein the shape of the medical dressing patch is any one of rectangular, circular, diamond-shaped and oval.

8. The medical dressing patch according to any one of claims 1-3, wherein a release layer is arranged on the surface of the contact layer on the side away from the protective layer.

9. The medical dressing of any one of claims 1-3, wherein the adhesive layer is a silicone gel layer or a CMC hydrogel layer;

the repairing layer is a degradable polylactic acid layer;

the liquid absorbing layer is an aqueous polyurethane foam layer;

the water-locking layer is an acrylamide-cellulose graft copolymer layer.

10. The medical dressing patch according to claim 9, wherein the protective layer is a transparent polyurethane film layer.