CN116831814A

CN116831814A - Frame dressing combined with ointment

Info

Publication number: CN116831814A
Application number: CN202310857917.2A
Authority: CN
Inventors: 魏敏; 商庆新
Original assignee: Shanghai Mebo Life Science & Technology Co ltd
Current assignee: Shanghai Mebo Life Science & Technology Co ltd
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2023-10-03

Abstract

The utility model discloses a framework dressing combined with ointment, which comprises a backing layer and a dressing core layer which are distributed up and down; the dressing core layer comprises a water absorption layer, a flow guide layer and a frame-type substrate layer which are sequentially distributed from top to bottom; the frame type substrate layer consists of a frame surface layer, a frame middle layer and a frame bottom layer; the middle layer of the frame is a linear frame structure body with a longitudinal supporting force and a linear structure, and is used for connecting the surface layer of the frame with the bottom layer of the frame; the surface layer of the frame is in a grid shape provided with grid holes; the bottom layer of the frame is close to one side of the diversion layer and can be used for seepage; the middle layer of the frame is also provided with a plurality of large grid spaces which are mutually communicated, the large grid spaces are communicated with grid holes of the surface layer of the frame, and ointment enters the large grid spaces from the grid holes of the surface layer of the frame. The utility model can be combined with the ointment to cover the wound surface, and the ointment entering the frame-type substrate layer can be better and continuously released to the wound surface again after being softened under the influence of skin temperature, thereby improving the treatment effect of the ointment on the wound surface.

Description

Frame dressing combined with ointment

Technical Field

The utility model relates to the field of medical dressing patches, in particular to a framework dressing combined with ointment.

Background

Medical dressings are medical materials used to cover sores, wounds, or other lesions. When the medical dressing is used, the dressing is attached to a wound, so that the wound is protected from being infected by bacteria, and meanwhile, seepage can be absorbed, and other problems caused by seepage overflow are avoided.

The burn ointment is a viscous oily ointment, if the application amount is too small to ensure the curative effect in the clinical use process, the application thickness is required to reach 1-2mm, vegetable oil and beeswax in the ointment structure of the burn ointment are distributed into a three-dimensional grid shape (namely, the beeswax forms a reticular frame structure, the reticular frame structure comprises a plurality of grooves, each groove is wrapped with a plurality of oil drops, and other medicinal components are wrapped in the oil drops), so that a physiological moisture permeability barrier environment can be formed, the ointment is slowly released, meanwhile, seepage can be sprayed out, and the curative effect is ensured; however, the burn cream with the coating thickness is easy to flow out when being influenced by clothes friction or external friction, so that the burn cream can not be remained on the wound surface for a long time. For this reason, a fixation device is needed that aids in medical dressings.

The Chinese patent specification discloses a silica gel foam dressing (authorized bulletin number: CN 205729614U) comprising the following structure: comprises a film layer, a silica gel layer and a dressing core layer; after the edges of the film layer and the silica gel layer are adhered, the dressing core layer is arranged between the film layer and the silica gel layer; the dressing core layer sequentially comprises a liquid absorption layer, a flow guide layer and a polyurethane foam layer; the liquid-absorbing layer is positioned on one side of the film layer, and the polyurethane foam layer is positioned on one side of the silicone gel layer. The silica gel foam dressing has good absorption liquid permeability and good fitting property, but also has good absorption property on burn cream coated on a wound surface. If the silica gel foam dressing is used as a fixing device of burn cream, because the polyurethane foam is generally of a cell structure, after the silica gel foam dressing is contacted with the burn cream, the burn cream can be quickly absorbed into the dressing core layer along with seepage and is tightly locked in the dressing core layer; because the burn ointment is relatively viscous and oily, the burn ointment tightly locked in the dressing core layer is not easy to continuously release to the wound surface again, and the action time and the treatment effect of the burn ointment on the wound are affected.

For another example, medical dressings currently on the market also use perforated foam as the dressing core. Whether polyurethane foam or perforated foam is generally in a compact cell structure, in which cells are more densely distributed, the cells are separated from each other by cell walls, and the foam contains a certain number of open cells communicated with the outside. When the dressing core layer is covered on the wound surface coated with the burn cream, the compact cell structure can generate certain adsorption force on the burn cream, and the burn cream is sucked into the dressing core layer. When the burn cream is sucked into the non-linear structure, the burn cream can be adsorbed and locked in the non-linear structure, and the burn cream locked in the cells cannot be easily and fully and continuously released to the wound again, so that the treatment effect on the wound is affected. At the same time, the foam pores can absorb a large amount of burn cream, so that the burn cream cannot be fully released on the wound surface.

For another example, medical dressings in the market use a nonwoven cotton core as the dressing core layer; although the non-woven cotton core has no cell structure, the non-woven cotton fiber has pores, and burn cream can be absorbed into the non-woven cotton fiber and cannot be released.

Meanwhile, the three-dimensional net structure of vegetable oil and beeswax in the burn cream is relatively fragile, collapse or breakage is very easy to occur when the vegetable oil and beeswax are slightly extruded, and once the structure is destroyed, the environment forming a physiological wettability and air permeability barrier can be adversely affected, so that the treatment effect of the burn cream on a wound surface is finally affected. However, both the dense cell structure and the pores of the non-woven cotton fibers exert a certain adsorption force on the burn cream after contacting the burn cream, and the adsorption force may cause the structure formed by the vegetable oil and the beeswax to be damaged when the adsorption force acts on the burn cream, such as breakage or deformation of the frame structure of the beeswax.

Disclosure of Invention

(one) solving the technical problems

The utility model aims to provide a frame dressing combined with ointment, which solves the technical problems that in the prior art, in the process of using the ointment to administer medicine to a wound surface, the ointment is easily locked in the dressing core layer and is not easy to release and the ointment structure of the ointment (such as burn ointment) is also easy to be damaged due to the adoption of a medical dressing which takes polyurethane foam, perforated foam, non-woven cotton and other materials as the dressing core layer to cover the wound surface.

(II) technical scheme

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a framework dressing combined with ointment comprises a back lining layer and a dressing core layer which are distributed up and down; the back lining layer covers the upper surface and the periphery of the dressing core layer;

the dressing core layer comprises a water absorption layer, a flow guide layer and a frame-type substrate layer; the water absorption layer, the diversion layer and the frame-type base material layer are sequentially distributed from top to bottom;

the frame type substrate layer consists of a frame surface layer, a frame middle layer and a frame bottom layer; the middle layer of the frame is positioned between the surface layer of the frame and the bottom layer of the frame, is a linear frame structure body with longitudinal supporting force and is in a linear structure and is used for connecting the surface layer of the frame and the bottom layer of the frame; the surface layer of the frame is in a grid shape provided with grid holes; the bottom layer of the frame is close to one side of the diversion layer and can be used for seepage;

a plurality of large grid spaces which are mutually communicated and used for containing ointment are also arranged in the middle layer of the frame, and the large grid spaces are communicated with grid holes on the surface layer of the frame; the ointment enters the large grid space from the grid holes on the surface layer of the frame.

Further, the frame-type substrate layer is a woven mesh fabric woven at one time by a warp knitting machine by adopting fibers; the middle layer of the frame is made of fiber with rebound supporting force; the bottom layer of the frame is in a grid shape or a densely woven flat layout with grid holes.

Further, one side of the large grid space, which is close to the surface layer of the frame, is in an opening shape; the openings of the large grid space are longitudinally opposite to and communicated with the grid holes on the surface layer of the frame, and the ointment can rapidly and accurately enter the large grid space through the grid holes on the surface layer of the frame.

Further, the air-permeable natural or synthetic polymer fiber is adopted as the air-permeable guide layer, and is extruded by longitude and latitude, superimposed and hot-pressed and compounded on the microporous membrane to prepare the air-permeable guide layer, so that the air-permeable guide layer has air-permeable, drainage and oil-repellent effects.

Further, the pore diameter of the micropores on the microporous membrane ranges from 0.01um to 5um.

Further, the water absorption layer is formed by one or more of polyurethane, polyvinyl alcohol sponge, chitosan sponge, silk protein sponge and super-absorbent cotton core.

Further, the back lining layer is formed by combining one or more of polyurethane film, polyethylene and spunlaced cloth.

Further, the depth of the large grid space is 1-2mm.

Further, the frame also comprises a release film layer, wherein the release film layer covers one side of the surface layer of the frame.

Further, the gel layer and the release film layer are also included; after the backing layer is adhered to the edge of the gel layer, the dressing core layer is arranged between the backing layer and the gel layer; the release film layer is covered on the gel layer.

Further, the gel layer is a grid-shaped gel layer.

(III) beneficial effects

Compared with the prior art, the utility model provides a framework dressing combined with ointment, which has the following beneficial effects:

(1) The frame-type substrate layer consists of a frame surface layer, a frame middle layer and a frame bottom layer; the middle layer of the frame is a linear frame structure body with a longitudinal supporting force and a linear structure, and is used for connecting the surface layer of the frame with the bottom layer of the frame; the surface layer of the frame is in a grid shape provided with grid holes; the bottom layer of the frame is close to one side of the diversion layer and can be used for seepage. The middle layer of the frame is a linear frame structure body with a longitudinal supporting force and a linear structure, so that structural support is formed, and meanwhile, the space between the surface layer of the frame and the bottom layer of the frame is divided by the linear frame structure body and is of a communicating structure as a whole. A plurality of large grid spaces which are mutually communicated and used for containing ointment are also arranged in the linear frame structure bodies of the middle layer of the frame.

After the frame dressing is covered on the wound surface, the ointment coated on the wound surface can enter a large grid space through grid holes on the surface layer of the frame; meanwhile, the peripheral side of the large grid space is of a linear structure, and the large grid spaces are communicated with each other through the linear structure; compared with a compact cellular structure, the adsorption effect of the layer on the ointment in the frame with the linear structure is relatively small, and the ointment entering the large grid space is not locked in the dressing core layer as in the compact cellular structure and is difficult to release; when the ointment (such as burn ointment) is softened under the influence of skin temperature, the ointment can be fully released to the wound surface again from the surface layer and the bottom layer of the frame.

Meanwhile, the middle layer of the frame is a linear frame structure body with longitudinal supporting force; after the ointment enters the large grid space, the peripheral side of the large grid space is longitudinally supported by the linear frame structure body, so that the collapse of the large grid space can be better prevented, a relatively stable space is provided for accommodating the ointment, and the excessive damage or collapse of the ointment structure of the ointment in the large grid space is effectively avoided.

(2) Meanwhile, unlike the dense cell structure, the adsorption force of the layers on the ointment is relatively less in the framework with the linear structure, so that the ointment structure of the ointment (such as burn ointment) is less damaged due to the adsorption force.

In the process of covering and pressing the wound surface coated with the ointment by using the framework dressing, the ointment entering the middle layer of the framework is in a linear structure and cannot be blocked by a blocking force similar to a pore wall in a compact cellular structure.

(3) In the utility model, the water absorption layer in the dressing core layer has good function of absorbing seepage and good liquid locking function, and can fix the absorbed seepage in the water absorption layer to prevent seepage.

(4) In the utility model, the diversion layer is prepared by compounding the breathable natural or synthetic polymer fiber on the microporous membrane through longitudinal latitude extrusion superposition hot pressing, and has the effects of ventilation, drainage and oil repellency. The diversion layer is positioned between the water absorption layer and the frame type substrate layer, so that the ointment in the frame type substrate layer can be prevented from being absorbed by the water absorption layer, especially when the bottom layer of the frame is in a grid shape with grid holes; therefore, the ointment filled in the frame-type substrate layer can be prevented from being quickly absorbed by the water absorption layer to be reduced after being contacted with the water absorption layer under quick downward pressure, so that the ointment which is relatively sufficient in quantity is ensured to be continuously released to the wound surface direction and stay on the surface of the wound surface after being softened later, and the ointment is ensured to continuously play a role on the wound surface for a long time.

Meanwhile, the air-permeable fiber is contained in the air-permeable layer, and seepage can be easily drained into the water-absorbent layer along the air-permeable fiber, so that seepage can be accelerated to be discharged from the wound surface. The microporous structure of the microporous membrane can also ensure excellent air permeability, can ensure that ointment can not permeate and can permeate liquid rapidly, and provides physiological healing environment for wound healing.

(5) In the utility model, the combination of the frame-type base material layer in the dressing core layer, the diversion layer with ventilation, drainage and oil-repellent functions and the water absorption layer forms a whole set of wound surface treatment scheme, which provides a whole feasibility scheme for maintaining an ointment structure for treating a wound surface in clinic and contacting the wound surface in a whole layer, draining and seepage, locking seepage and guaranteeing ventilation, and can reduce repeated administration.

Drawings

Fig. 1 is a schematic view of the construction of a framework dressing incorporating an ointment in accordance with the present utility model.

Fig. 2 is a bottom view of the frame dressing with the release film layer removed from fig. 1.

Fig. 3 is a schematic view of the frame dressing with the gel layer added to the fig. 1.

Fig. 4 is a bottom view of the frame dressing of fig. 3 with the release film removed.

Fig. 5 is a schematic view of the structure of a frame-type substrate layer in a frame dressing of the present utility model.

Fig. 6 is a schematic diagram of a frame-type substrate layer in a frame dressing of the present utility model.

Fig. 7 is a graph showing the effect of the frame dressing of the present utility model after it is covered with burn cream.

Fig. 8 is a graph showing the effect of a silicone gel foam dressing after it is covered with burn cream.

Fig. 9 is a graph showing the effect of a nonwoven cotton core dressing after it is covered with burn cream.

In the figure:

10-backing layer, 21-water absorption layer, 22-diversion layer, 23-frame type substrate layer, 231-frame surface layer, 232-frame middle layer, 233-frame bottom layer, 30-gel layer and 40-release film layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

as shown in fig. 1-2, a frame dressing combined with ointment is provided, which comprises a backing layer 10 and a dressing core layer which are distributed up and down; the backing layer 10 covers the upper surface and the peripheral side of the dressing core.

The dressing core layer comprises a water absorption layer 21, a diversion layer 22 and a frame-type base material layer 23; the water-absorbing layer 21, the diversion layer 22 and the frame-type base material layer 23 are distributed from top to bottom in sequence.

Preferably, the backing layer 10 is one or more of polyurethane film, polyethylene and spunlaced cloth. For example, the backing layer 10 may be made of a single polyurethane film material, or the backing layer 10 may be formed by stacking a single polyurethane film sheet and a single polyethylene sheet one on top of the other. The backing layer 10 in this example 1 is a polyurethane film, has high air permeability, and can play a role in water resistance and bacteria resistance.

Meanwhile, as shown in fig. 1, the area of the backing layer 10 is larger than that of the dressing core layer, and the upper surface and the side surface of the dressing core layer are covered, so that the upper surface and the side surface of the dressing core layer can be protected. The water-absorbing layer 21 is directly attached to the lower surface of the backing layer 10, and the backing layer 10 can prevent leakage of the liquid in the water-absorbing layer 21. Meanwhile, the back surface of the backing layer 10 is coated with a layer of adhesive (such as a hot-melt pressure-sensitive adhesive, a solvent pressure-sensitive adhesive, a silicone pressure-sensitive adhesive, an aqueous pressure-sensitive adhesive, or a silicone gel) for adhesion. The backing layer 10 may be adhesively attached to the dressing core at the junction by the adhesive described above.

The frame-type base material layer 23 in this example 1 is a woven mesh base material woven at one time by a warp knitting machine using fibers. Preferably, the fibers can be one or more of polymer synthetic fibers PP, polymer synthetic fibers PET and natural fibers.

In this embodiment 1, the frame-type base material layer 23 is composed of a frame surface layer 231, a frame middle layer 232, and a frame bottom layer 233, as shown in fig. 6; the frame surface 231 is in a grid shape provided with grid holes; the middle frame layer 232 is located between the top frame layer 231 and the bottom frame layer 233, and is made of fiber with rebound supporting force (i.e. fiber with elasticity or rebound), and is a linear frame structure with longitudinal supporting force, and is used for connecting the top frame layer 231 and the bottom frame layer 233; the bottom frame layer 233 is a densely woven flat plate, and when connected, the bottom frame layer 233 is located on the side of the flow guiding layer 22.

When the frame bottom layer 233 is a densely woven flat plate, the frame surface layer 231 is not deformed too much, the whole frame-type substrate layer 23 can be reinforced, and the frame bottom layer has pores through which seepage can pass.

The middle frame layer 232 is a linear frame structure body, is in a linear structure, is connected between the frame surface layer 231 and the frame bottom layer 233, and has a certain supporting effect in the longitudinal direction, wherein the upper end and the lower end of the linear frame structure body are respectively connected with the frame bottom layer 233 and the frame surface layer 231; the space between the frame surface layer 231 and the frame bottom layer 233 is divided by the linear frame structure, and the space inside is in a communication state. Specifically, the linear frame structure of the middle layer 232 of the frame may be a single-wire connection structure, for example, the middle layer 232 of the frame is composed of a plurality of resilient fiber monofilaments connected between the surface layer 231 of the frame and the bottom layer 233 of the frame, and the fiber monofilaments may be curved or irregularly curved in structure, and a space exists between the fiber monofilaments; alternatively, the linear frame structure of the frame middle layer 232 may also be composed of a plurality of elastic fiber webs connected between the frame surface layer 231 and the frame bottom layer 233, the elastic fiber webs may be woven from fibers having resiliency and extend longitudinally, and a space exists between two adjacent elastic fiber webs; alternatively, the linear frame structure of the middle layer 232 of the frame may be a three-dimensional net structure, for example, the middle layer 232 of the frame is formed by weaving fiber filaments with rebound resilience.

Preferably, the frame bottom layer 233 may also have a mesh shape provided with mesh holes. When the frame skin 231 and the frame bottom 233 have a mesh shape provided with mesh holes, the mesh holes may be circular, oval, square, diamond, or tetragonal, hexagonal, etc.

In this embodiment 1, the linear frame structure of the frame middle layer 232 is made of fiber having a rebound supporting force, and has a certain longitudinal supporting force, and a space having a certain thickness is formed between the frame surface layer 231 and the frame bottom layer 233, so that the frame-shaped base material layer 23 is formed in a three-dimensional shape as a whole.

In this embodiment 1, a plurality of large mesh spaces 230 for accommodating ointment, which are mutually communicated, are also uniformly provided between the frame surface layer 231 and the frame bottom layer 233; the large grid space 230 is used to provide a filling space for ointment and is communicated with the grid holes on the frame surface 231; the ointment enters the large grid space 230 from the grid holes in the frame skin 231.

As shown in fig. 5, a schematic structural diagram of a frame-type substrate layer 23 is provided, the frame-type substrate layer 23 is a woven mesh substrate, the frame surface layer 231 has a plurality of large circular mesh holes, and the frame bottom layer 233 is a densely woven flat layout; the middle layer 232 of the frame is a curved frame structure, the large grid spaces 230 are located in the linear frame structure of the middle layer 232 of the frame, curved fibers with rebound supporting force are located at the periphery of the large grid spaces 230, and the linear frame structure is a non-closed structure between two adjacent large grid spaces 230, so that the large grid spaces 230 are mutually communicated. Meanwhile, as shown in fig. 5, the frame skin 231 has a mesh structure having large circular mesh holes, and a side of the large mesh space 230 adjacent to the frame skin 231 is opened; and the opening size of the large circular grid holes is the same as that of the openings of the large grid spaces 230, the large circular grid holes on the frame surface layer 231 are longitudinally opposite to and communicated with the openings of the large grid spaces 230, and the grid holes on the frame surface layer 231 and the large grid spaces 230 are combined in the frame-type substrate layer 23 to form a concave three-dimensional space. The ointment can be quickly and accurately introduced into the large grid space 230 through the large circular grid holes on the frame skin 231. When the mesh holes of the frame skin 231 are large circular mesh holes as shown in fig. 5 when used in combination with burn cream, we can design the hole diameters of the large circular mesh holes to be 2mm-8mm.

The frame-type base material layer 23 in this embodiment 1 is obtained by changing the shape of the mesh holes in the frame surface layer 231 and the shape of the openings in the large mesh space 230 to diamond shapes on the basis of fig. 5. In embodiment 1, the aperture area of the mesh holes on the frame skin 231 was 9 square millimeters, the depth of the large mesh space 230 was 2mm, and the depth of the concave-shaped stereoscopic space formed by combining the mesh holes on the frame skin 231 and the large mesh space 230 was 2.5mm. The frame dressing can be used in combination with ointments, especially viscous oily ointments such as burn ointment (e.g. burn ointment containing sesame oil and beeswax, the vegetable oil and beeswax in the ointment structure are distributed in a solid grid). In the above embodiment 1, the concave three-dimensional space can be filled with burn cream with a certain thickness, the thickness of the burn cream administration of 1-2mm can be realized above the wound surface, and meanwhile, the structure of the burn cream body entering the concave three-dimensional space can be kept relatively intact, so that the possibility is provided for the follow-up sustained release of the burn cream, and the better therapeutic effect of the burn cream on the wound surface can be realized. Of course, the drug effect of different ointments is required to be different in the thickness of the drug to be administered, and therefore, when the frame-type base material layer 23 is woven, the size of the concave three-dimensional space can be adjusted accordingly according to the specific desired thickness of the drug to be administered.

Preferably, when the frame surface layer 231 and the frame bottom layer 233 are both in a grid shape with grid holes, the grid holes on the frame bottom layer 233 and the grid holes on the frame surface layer 231 can be respectively disposed at the upper and lower ends of the large grid space 230, and the upper and lower ends of the large grid space 230 are simultaneously communicated with the grid holes on the frame bottom layer 233 and the grid holes on the frame surface layer 231, and the three are combined in the frame-type substrate layer 23 to jointly form a three-dimensional space (for example, a three-dimensional space with two ends penetrating like a cylinder) with two ends penetrating. After the ointment enters from the grid holes of the frame surface layer 231 and fills the three-dimensional space with the two ends being penetrated, the ointment can form a certain filling thickness in the frame-type base material layer 23.

When the frame dressing is covered on the wound surface coated with burn cream, the frame surface layer 231 is downward attached to the burn cream coated on the wound surface, and the burn cream enters a plurality of communicated large grid spaces 230 through grid holes of the frame surface layer 231; meanwhile, since the middle layer 232 of the frame is a linear frame structure with a longitudinal supporting force, after the burn cream enters the large grid space 230, the peripheral side of the large grid space 230 is longitudinally supported by the linear frame structure, so that the collapse of the large grid space 230 can be better prevented, and the damage or collapse of the paste structure of the burn cream in the large grid space 230 can be effectively avoided.

The large grid space 230 is a three-dimensional space region between the frame skin 231 and the frame bottom 233, for providing space for the ointment to fill inside the frame-type base material layer. And a linear frame structure of a middle layer 232 of the frame is arranged between two adjacent large grid spaces 230, the periphery side of the large grid spaces 230 is a linear structure, and the large grid spaces 230 are communicated with each other through the linear structure. The adsorption effect of the layer 232 on the burn cream in the frame in a linear structure is relatively small compared to the dense cell structure. For this reason, burn cream that enters the large grid space 230 is not as tightly locked in the dressing core as in a dense cell structure for difficult release; the burn cream can be released again from between the frame skin 231 and the frame bottom 233 continuously and slowly toward the wound surface after softening with the influence of the skin temperature.

And, unlike the dense cell structure, since the adsorption force of the large grid space 230 to the burn cream is relatively small, the paste structure of the burn cream is less damaged due to the influence of the adsorption force, and the paste structure of the burn cream filled in the large grid space 230 can be better protected.

In this example 1, the frame-type base material layer 23 was a woven mesh base material woven at one time by a warp knitting machine using PET fibers, and had no dense cell structure. When weaving the frame-type substrate layer 23, we can reduce the distance between two adjacent grid holes on the frame surface layer 231 as much as possible, so as to avoid excessive extrusion of the burn cream by the fiber surface area between two adjacent grid holes on the frame surface layer 231 when the frame dressing is covered on the wound surface coated with the burn cream, and avoid the damage of more burn cream structures in the extrusion; meanwhile, since the middle frame layer 232 is a linear frame structure, the connection point between the middle frame layer 232 and the surface frame layer 231 is relatively small, when the frame type substrate layer 23 is woven, the space between the two large grid spaces 230 can be reduced as much as possible, so as to form the large grid space 230 with relatively large space, so that the burn cream is ensured to be filled in the frame type substrate layer with relatively enough space, and a framework space is provided for the continuous slow release of the burn cream. And, the space between two adjacent mesh holes on the frame skin 231 is reduced as much as possible, which is also helpful to properly increase the aperture area of the mesh holes on the frame skin 231 with the overall size of the frame skin 231 unchanged and the number of mesh holes unchanged, and then simultaneously cooperate with the relatively large mesh space 230, so that burn cream can be rapidly and sufficiently filled into the frame-type base material layer 23 when the frame dressing covers the wound surface coated with burn cream, thereby correspondingly reducing the amount of burn cream extruded around the wound surface during the covering operation.

We have selected from the market two common medical dressings, silicone gel foam dressing and nonwoven cotton core dressing, to compare the use effect with the framing dressing of our example 1. We apply a dose of burn cream to the back of the hand for the first time, then cover the burn cream with a frame dressing and press slightly, resulting in the effect shown in figure 7; then, the back of the hand is wiped clean, burn cream with the same dosage is smeared on the same position of the back of the hand for the second time in the same mode, and then, after the burn cream is covered by the silicone gel foam dressing and slightly pressed, the effect shown in figure 8 is formed; then, the back of the hand was rubbed off, and the same amount of burn cream was applied to the same position of the back of the hand in the same manner for the third time, and then, after the burn cream was covered with the nonwoven cotton core dressing and slightly pressed, the effect as shown in fig. 9 was produced. In the above three blanket pressing process, we use almost the same pressing force and blanket press in the same direction.

As shown in fig. 7, the burn cream is not squeezed all around, the cream structure is less damaged, and in particular, the cream structure of the cream filled in the large mesh space 230 remains relatively intact. As shown in fig. 8 and 9, the burn cream is squeezed and dispersed all around, and the paste structure of the burn cream is severely damaged during such squeezing and dispersing.

In this embodiment 1, the frame-type base material layer 23 is woven once by a fiber warp knitting machine, the frame middle layer 232 is in a linear structure, and in the process of covering the wound surface coated with burn cream by using the frame dressing, the burn cream entering into the frame middle layer 232 is in the linear structure and will not be blocked by a blocking force similar to that from the wall of the dense cell structure.

Preferably, the water-absorbing layer 21 may be formed by one or more of polyurethane, polyvinyl alcohol sponge, chitosan sponge, silk protein sponge, super absorbent cotton core. For example, the water-absorbing layer 21 is made of a single material of super absorbent cotton core, or the water-absorbing layer 21 is formed by combining sheet hydrophilic polyurethane foam and sheet polyvinyl alcohol sponge vertically, or the water-absorbing layer 21 is formed by combining the polyvinyl alcohol sponge and chitosan sponge, or the water-absorbing layer 21 is formed by combining the chitosan sponge and the super absorbent cotton core. The material of the water-absorbent layer 21 in this example 1 is super absorbent cotton core, which can lock the seepage.

Preferably, the diversion layer 22 can be prepared by compounding breathable natural or synthetic polymer fibers on a microporous membrane through longitudinal and latitudinal extrusion superposition hot pressing, and has the effects of ventilation, drainage and oil repellency. Microporous membranes are made by calendaring, extrusion, biaxially stretching, and the like. In this embodiment 1, the microporous membrane in the diversion layer 22 is polytetrafluoroethylene microporous membrane, the pore diameter of the microporous membrane is 5um, the microporous membrane is located at one side of the frame-type substrate layer 23, and the air-permeable fiber in the diversion layer 22 is located at one side of the water-absorbing layer 21; meanwhile, the pore diameter of the microporous membrane is smaller, so that oily substances in the burn cream can be prevented from passing through, and the oil-repellent effect is achieved.

The diversion layer 22 is positioned between the water absorption layer 21 and the frame type substrate layer 23, can prevent burn cream from being directly adhered to the water absorption layer 21 and being absorbed by the water absorption layer 21, ensures that the burn cream is filled in the frame type substrate layer 23 and can be continuously released and stays on the surface of a wound surface, and ensures that the burn cream continuously plays a role on the wound surface for a long time.

At the same time, the diversion layer 22 has the functions of ventilation and diversion of seepage. The air-permeable fiber is contained in the air-permeable layer 22, so that the seepage can be easily guided into the water-absorbent layer 21 along the air-permeable fiber, and the seepage is accelerated to be discharged from the wound surface. Meanwhile, the diversion layer 22 has oil-repellent effect, and can prevent oil in the burn cream from penetrating into the water-absorbing layer 21 through the diversion layer 22, thereby reducing the drug property and drug effect of the burn cream. The microporous structure of the microporous membrane can also ensure excellent air permeability, can ensure that ointment can not permeate and can permeate liquid rapidly, and provides physiological healing environment for wound healing.

In example 1, a release film 40 was also included. Preferably, the release film 40 may be a milky white PE film, a PP film, or an embossed film (PP or PE). The release film 40 comprises a bottom release film and a folding release film, and one end of the folding release film is provided with a folding section formed after folding. The bottom release film covers one part of the frame-type substrate layer 23, the flanging release film covers the other part of the frame-type substrate layer 23, and one part of the flanging section is positioned on the bottom release film. The adhesive applied to the backing layer 10 is used between the backing layer 10 and the release film 40.

In the utility model, the combination of the frame-type base material layer 23 in the dressing core layer, the diversion layer 22 with ventilation, drainage and oil-repellent functions and the water absorption layer 21 forms a whole set of wound surface treatment scheme, which provides a whole feasibility scheme for maintaining an ointment structure for treating a wound surface in clinic, contacting the wound surface in a whole layer, draining and seepage, locking seepage, guaranteeing ventilation and reducing repeated administration. Meanwhile, after the required administration thickness is formed in the framework dressing, the ointment can be released again relatively fully, and the curative effect of the ointment on the wound surface can be better exerted.

Example 2:

we add a gel layer 30 to the structure of example 1, thereby forming example 2, the specific structure of example 2 is shown in fig. 3 and 4. Meanwhile, unlike example 1, in example 2, the backing layer 10 was a glue-coated spunlaced fabric, the pore diameter of micropores on the microporous membrane was 0.01um, the frame-type base material layer 23 was a woven mesh base material woven once by a warp knitting machine using bamboo fibers, the frame surface layer 231 and the frame bottom layer 233 were both in a mesh shape provided with mesh holes, and the depth of the large mesh space 230 was 1mm.

As shown in fig. 3 and 4, the gel layer 30 is a perforated grid-shaped gel layer, and in the embodiment 2, the dressing core layer is disposed between the backing layer 10 and the gel layer 30 (the portion of the gel layer 30 covered on the frame-type substrate layer 23 is not shown in fig. 4), meanwhile, the area of the dressing core layer is smaller than that of the backing layer 10 and the gel layer 30, the dressing core layer is located in the middle of the backing layer 10, and the periphery of the backing layer 10 and the gel layer 30 are glued to form a sticky edge.

The addition of the gel layer 30 is beneficial to better fixing the dressing core layer on the backing layer 10 and preventing the dressing core layer from sliding and falling off in the use process; simultaneously, the adhesive edge structure also makes the frame dressing laminate the surface of a wound more easily. In addition, the gel layer 30 can also block seepage in the core layer of the dressing to a certain extent, so that seepage extruded from fiber gaps of the woven mesh type framework type base material layer 23 towards the wound surface under the condition of compression is reduced, and seepage flowing back to the wound surface is reduced.

Preferably, the gel layer 30 may be a mesh-shaped gel layer perforated by one or more of silicone gel, polyurethane gel, poly (hydroxyethyl methacrylate), etc., and the shape of the holes may be circular, elliptical, square, diamond, or quadrilateral or hexagonal, etc.

Meanwhile, in embodiment 2, the release film 40 also includes a bottom release film and a folded release film, and one end of the folded release film is provided with a folded edge section formed after folding. The bottom release film covers one part of the silicone gel layer 30, the flanging release film covers the other part of the silicone gel layer 30, and one part of the flanging section is positioned on the top of the bottom release film.

Except for the differences mentioned above, the embodiment 2 remains the same as the embodiment 1 in other respects.

Claims

1. A frame dressing incorporating an ointment, characterized by: comprises a back lining layer and a dressing core layer which are distributed up and down; the back lining layer covers the upper surface and the periphery of the dressing core layer;

2. A patch in combination with an ointment as claimed in claim 1, wherein: the frame-type substrate layer is a woven mesh fabric woven at one time by a warp knitting machine by adopting fibers; the middle layer of the frame is made of fiber with rebound supporting force; the bottom layer of the frame is in a grid shape or a densely woven flat layout with grid holes.

3. A patch in combination with an ointment as claimed in claim 2, wherein: the side of the large grid space, which is close to the surface layer of the frame, is in an opening shape; the openings of the large grid space are longitudinally opposite to and communicated with the grid holes on the surface layer of the frame, and the ointment can rapidly and accurately enter the large grid space through the grid holes on the surface layer of the frame.

4. A patch in combination with an ointment as claimed in claim 3, wherein: the air-permeable natural or synthetic polymer fiber is adopted as the air-permeable guide layer, and is extruded by longitude and latitude, superimposed and hot-pressed and compounded on the microporous membrane to prepare the air-permeable drainage and oil-repellent microporous membrane.

5. A patch in combination with an ointment as claimed in claim 4, wherein: the pore diameter of the micropores on the microporous membrane ranges from 0.01um to 5um.

6. A patch in combination with an ointment as claimed in claim 5, wherein: the water absorption layer is formed by one or more of polyurethane, polyvinyl alcohol sponge, chitosan sponge, silk protein sponge and super-absorbent cotton core.

7. A patch in combination with an ointment as claimed in claim 6, wherein: the back lining layer is formed by combining one or more of polyurethane film, polyethylene and spunlaced cloth.

8. A patch in combination with an ointment as claimed in claim 7, wherein: the depth of the large grid space is 1-2mm.

9. A patch in combination with an ointment as claimed in any one of claims 1 to 8 wherein: the release film layer covers one side of the surface layer of the frame.

10. A patch in combination with an ointment as claimed in any one of claims 1 to 8 wherein: the gel layer and the release film layer are also included; after the backing layer is adhered to the edge of the gel layer, the dressing core layer is arranged between the backing layer and the gel layer; the release film layer is covered on the gel layer.

11. A patch in combination with an ointment as claimed in claim 10, wherein: the gel layer is a grid gel layer.