WO2018072347A1

WO2018072347A1 - Therapeutic vacuum fluid-locking system

Info

Publication number: WO2018072347A1
Application number: PCT/CN2017/070344
Authority: WO
Inventors: 朱新生
Original assignee: 广东美捷威通生物科技有限公司
Priority date: 2016-10-18
Filing date: 2017-01-06
Publication date: 2018-04-26
Also published as: CN106420167A; CN106420167B

Abstract

Disclosed is a therapeutic vacuum fluid-locking system, comprising a compression-type foam material layer (1), an adhesive film (4) and a fluid-locking material layer. The adhesive film (4) is provided with adhesive wings (40) attached to the periphery of a wound surface. The fluid-locking material layer comprises a water-absorbing compression material layer (3) and a material layer (2) with a one-way fluid-permeable surface, wherein a fluid-locking cavity (20) is formed in a gap between the material layer (2) with a one-way fluid-permeable surface and the water-absorbing compression material layer (3), one end face of the material layer (2) with a one-way fluid-permeable surface is in contact with the compression-type foam material layer (1), and a first adsorption cavity (10) is formed between the inner surfaces of the adhesive wings (40) and an outer surface of the wound surface after the adhesive film (4) is attached to the periphery of the wound surface via the adhesive wings (40). The volume of the first adsorption cavity (10) increases along with the expansion of the compression-type foam material layer (1) after same absorbs fluid, and the absorbed fluid is locked inside a fluid-locking space by means of the material layer (2) with a one-way fluid-permeable surface and the water-absorbing compression material layer (3), so that even when the water-absorbing compression material layer (3) is squeezed, fluid does not permeate back into the wound or wound surface of a patient through the material layer (2) with a one-way fluid-permeable surface.

Description

Vacuum lock fluid therapy system

Technical field

The invention relates to a medical device, in particular to a vacuum lock fluid treatment system.

Background technique

Due to the development of the industry, there are more and more particles in the air, and some tiny dust is trapped in the skin of the human body to form dirt. Dirt on the surface of the skin can be removed by bathing, but dirt deep in the skin can't be cleaned by bathing. Modern people try to use cleansing liquids and chemical-containing cleaning stickers to clean the skin's deep dirt. Although the skin's deep dirt is cleaned to some extent, the residual chemicals can affect the skin.

There is also wound care. The wound is usually protected by a wound patch. The wound sticker is generally a medical polyurethane (PU) wound sticker. The medical polyurethane (PU) wound sticker is made of an imported breathable PU substrate and a composite surface backing substrate, which is cut, sterilized and packaged. Wound stickers can only be used for small pieces of trauma emergency treatment, thus temporarily stopping bleeding and protecting the wound. However, it should be noted that the time used should not be too long. If it is used too long, the tape on the outer layer of the wound is not breathable. It will make the wound and the skin around the wound white and soft, resulting in secondary infection of the bacteria. This will make the wound worse. It provides good conditions for wound or wound healing only in the absence of exudation of the wound or wound. However, when a wound or a large area of the wound is exuded, since the wound patch cannot absorb liquid, the exudate remains on the surface of the wound or the wound surface, which is not conducive to wound or wound healing on the one hand, and forms a bacterial growth lesion on the other hand. In addition, there are some wound stickers for suction suction flow, which absorb the liquid on the surface of the wound and suck out the necrotic tissue deep in the wound. However, these wounds require an external negative pressure source to infiltrate the wound. Adsorbed. There is now a compressed vacuum vacuum system that adsorbs deep skin dirt and/or adsorbs wound exudate and draws out necrotic tissue deep in the wound. However, although the sheet-like compressed foam layer in the compressed vacuum system can adsorb the liquid, the sheet-like compressed foam layer cannot lock the liquid, and when the liquid reaches a certain saturation, the force is squeezed. The liquid will re-flow the patient's wound or wound, which will not achieve the desired effect.

Summary of the invention

It is an object of the present invention to provide a vacuum lock fluid therapy system.

The solution to the technical problem of the present invention is: a vacuum lock liquid treatment system comprising a compressed foam layer, an adhesive film, and a layer of liquid-locking material between the layer of the compressed foam and the layer of compressed foam, After the adhesive film is attached to the layer of the liquid-repellent material, the periphery of the liquid-repellent material layer extends outwardly from the range of the liquid-locking material layer and the compressed foam layer to form a flap which can be attached around the wound surface, and the liquid-repellent material layer comprises a layer of compressed water-absorbing material. And a unidirectional liquid permeable surface material layer completely encapsulating the outer surface of the compressed water absorbing material layer, the gap between the unidirectional liquid permeable surface material layer and the compressed water absorbing material layer forming a lock liquid chamber, the unidirectional liquid permeable surface material layer An end surface is in contact with the layer of the compressed foam material, and the adhesive film forms a first adsorption chamber between the outer surface of the inner surface of the wound surface after the wound surface is adhered to the wound surface, the first adsorption chamber The volume increases as the compressed foam layer expands after aspiration.

As a further improvement of the above technical solution, the liquid after the liquid suction of the compressed foam layer enters the lock liquid chamber through the unidirectional liquid permeable surface material layer.

As a further improvement of the above technical solution, the compressed foam layer is swelled and expanded, and the compressed foam layer is arranged in a three-dimensionally-transparent adsorption channel, and the adsorption channel forms a third adsorption chamber, and the third adsorption chamber The volume increases as the compressed foam layer expands after aspiration.

As a further improvement of the above technical solution, the compression type foam material layer is provided with a plurality of adsorption holes penetrating through the upper and lower end faces of the compression type foam material layer, and one end of each of the adsorption holes is in contact with the wound surface, and the adsorption hole is The open end is in contact with the inner surface of the unidirectional liquid permeable surface material layer, the inner passage of the adsorption hole forms a second adsorption chamber, and the volume of the second adsorption chamber is absorbed by the compressed foam layer Expand and increase.

As a further improvement of the above technical solution, after the compressed foam layer is liquid-absorbed, the second adsorption chamber communicates with the first adsorption chamber through the third adsorption chamber.

As a further improvement of the above technical solution, the cross-sectional shape of the adsorption hole is one of a circle, a rectangle, an ellipse, a trapezoid, a semicircle, a semi-ellipse or a triangle.

As a further improvement of the above technical solution, the thickness of the compressed foam layer after liquid swell expansion is equal to 3 to 20 times the thickness before the liquid absorbing expansion of the compressed foam layer.

As a further improvement of the above technical solution, the volume of the first adsorption chamber after the liquid-absorbent expansion of the compressed foam layer is equal to 2 to 30 times the volume of the first adsorption chamber before the liquid-absorbent expansion of the compression-type foam layer.

As a further improvement of the above technical solution, the volume of the second adsorption chamber after the liquid-absorbent expansion of the compressed foam layer is equal to 2 to 30 times the volume of the second adsorption chamber before the liquid-absorbent expansion of the compression-type foam layer.

As a further improvement of the above technical solution, the compressed foam layer is a layer of compressed superabsorbent polyvinyl alcohol material.

The invention has the beneficial effects that: by providing the first adsorption cavity, the compressed foam material layer is expanded after the liquid is absorbed, the adhesive film is gradually raised, the sealed space of the first adsorption cavity is larger and larger, and the air is more and more Thin, partial vacuum is formed, and the partial vacuum of the compressed foam layer inevitably forms a negative pressure difference for the bonding position or the wound, the wound surface, etc. which need to be cleaned. Because the pressure difference is formed, the present invention inevitably produces a 24 hour uninterrupted continuous negative pressure suction action for the position of the skin and the like, and achieves the effect of gradually removing the dirt in the deep layer of the skin or pumping the wound exudate; similarly, There is also the role of wound granulation soft tissue gradually swelling and promoting local blood circulation. In addition, the liquid absorbed is locked in the lock liquid space by the unidirectional liquid permeable surface material layer and the compressed water absorbing material layer, and even if the compressed water absorbing material layer is squeezed, the liquid does not ooze back from the unidirectional liquid permeable surface material layer. Wound or wound.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is apparent that the described drawings are only a part of the embodiments of the present invention, and not all of the embodiments, and those skilled in the art can obtain other designs and drawings according to the drawings without any creative work.

Figure 1 is a schematic view showing the structure of the present invention attached to the wound by a flap;

Fig. 2 is a schematic view showing the structure of the compressed foam layer in the present invention after liquid swell expansion.

detailed description

The concept, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The scope of protection of the present invention. In addition, all the coupling/joining relationships mentioned in the text are not directly connected to the components, but rather may constitute a better coupling structure by adding or reducing the coupling accessories according to the specific implementation.

1 to 2, a vacuum lock liquid treatment system comprising a compressed foam layer 1, an adhesive film 4, and a liquid-repellent material layer between the compressed foam layer 1 and the compressed foam layer 1, After the adhesive film 4 is attached to the outer surface of the liquid-repellent material layer, the periphery thereof extends outwardly from the range of the liquid-locking material layer and the compressed foam layer 1 to form a flap 40 which can be attached around the wound surface. The layer comprises a layer of compressed water absorbing material 3 and a layer of unidirectional liquid permeable surface material 2 completely encapsulating the outer surface of the layer of compressed water absorbing material 3, the gap between the layer of permeable liquid surface material 2 and the layer 3 of compressed water absorbing material forming a lock The liquid chamber 20, one end surface of the unidirectional liquid permeable surface material layer 2 is in contact with the compressed foam material layer 1, and the adhesive film 4 is adhered to the inner surface of the appendage 40 and the wound surface by the appendage 40 A first adsorption chamber 10 is formed between the outer surfaces, and the volume of the first adsorption chamber 10 increases as the compressed foam layer 1 expands after being absorbed by the liquid.

By providing the first adsorption chamber 10, the compressed foam layer 1 is expanded by liquid absorption, the adhesive film 4 is gradually raised, the sealed space of the first adsorption chamber 10 is larger and larger, the air is thinner and thinner, and partial vacuum is formed. The partial pressure of the compressed foam layer 1 inevitably forms a negative pressure difference between the pasting action position or the wound, the wound surface, etc., which need to be cleaned. Because the pressure difference is formed, the present invention inevitably produces a 24 hour uninterrupted continuous negative pressure suction action for the position of the skin and the like, and achieves the effect of gradually removing the dirt in the deep layer of the skin or pumping the wound exudate; similarly, There is also the role of wound granulation soft tissue gradually swelling and promoting local blood circulation. In addition, the liquid absorbed is locked in the liquid lock space by the unidirectional liquid permeable surface material layer 2 and the compressed water absorbing material layer 3, and even if the compressed water absorbing material layer 3 is squeezed, the liquid does not pass from the unidirectional liquid permeable surface material layer. 2 oozing back to the patient's wound or wound.

Further as a preferred embodiment, the liquid after the liquid absorption of the compressed foam layer 1 enters the lock chamber 20 through the unidirectional liquid pervious surface material layer 2. The layer of compressed water absorbing material 3 swells after liquid absorption, and the adhesive film 4 is gradually raised. As the sealing space of the lock liquid chamber 20 becomes larger and larger, the partial vacuum is further strengthened, and the compressed water absorbing material layer 3 is partially vacuum-fitted with the compressed foam material. Layer 1 produces long-term continuous vacuum suction on the wound and its deep soft tissue, reaching the wound, wound exudate suction, the granulation soft tissue of the wound gradually disappears and promotes the blood circulation of the local blood. One side of the unidirectional liquid permeable surface material layer 2 opposite to the lower end surface of the compressed water absorbing material layer 3 is a unidirectional liquid permeable layer, and the unidirectional liquid permeable surface opposite to the upper end surface of the compressed water absorbing material layer 3 One side of the material layer 2 is a water-impermeable layer. That is, the liquid can only enter the lock liquid chamber from the one-way liquid-permeable layer, and the one-way liquid-permeable layer is close to the wound surface.

Further, as a preferred embodiment, the compressed foam layer 1 is swelled and expanded, and the compressed foam layer 1 is disposed in a three-dimensionally-transparent adsorption channel, and the adsorption channel forms a third adsorption chamber, and the third adsorption chamber The volume increases as the compressed foam layer 1 expands after aspiration. The compressed foam layer 1 expands after liquid absorption, and the unidirectional liquid permeable surface material layer 2 and the adhesive film 4 are gradually raised, except that the closed space of the first adsorption chamber 10 is larger and larger, a partial vacuum is formed, and the compressed foam is formed. The three-dimensional interpenetrating adsorption channel in the material layer 1 is gradually restored, and the partial vacuum is further strengthened. The partial vacuum of the compressed foam layer 1 exerts a long-term continuous negative pressure suction on the wound surface and the deep soft tissue to achieve the wound and wound exudate suction. The wound granulation soft tissue gradually reduces swelling and promotes the effect of local blood circulation. Similarly, the partial vacuum of the compressed foam layer 1 exerts a negative pressure suction effect on the surface requiring soil removal and its deep soft tissue, and gradually discharges the dirt in the deep layer. In addition, the liquid absorbed is locked in the liquid lock space by the unidirectional liquid permeable surface material layer 2 and the compressed water absorbing material layer 3, and even if the compressed water absorbing material layer 3 is squeezed, the liquid does not pass from the unidirectional liquid permeable surface material layer. 2 oozing back to the patient's wound or wound.

Further, as a preferred embodiment, the compressed foam layer 1 is provided with a plurality of adsorption holes penetrating the upper and lower end faces of the compressed foam layer 1, and one end of each of the adsorption holes is in contact with the wound surface, and the adsorption The open end of the hole is in contact with the inner surface of the unidirectional liquid permeable surface material layer 2, the internal passage of the adsorption hole forms a second adsorption chamber 11, and the volume of the second adsorption chamber 11 follows the compression type foam material Layer 1 expands after liquid absorption and increases.

Further, as a preferred embodiment, after the compressed foam layer 1 is liquid-swelled, the second adsorption chamber 11 communicates with the first adsorption chamber 10 through the third adsorption chamber.

The layer of the compressed foam material 1 expands after liquid absorption, and the adhesive film 4 is gradually raised, except that the closed space of the first adsorption chamber 10 is larger and larger, a partial vacuum is formed, and the three-dimensional interpenetrating adsorption channel of the compressed foam layer 1 is internally formed. Gradually recovering, the partial vacuum is further strengthened. As the confined space of the second adsorption chamber 11 becomes larger and larger, the partial vacuum is greatly enhanced, and the partial vacuum of the compressed foam layer 1 causes a long-lasting negative effect on the wound surface and its deep soft tissue. Pressure suction, to achieve wound, wound exudate suction, wound granulation soft tissue gradually swelling and promote the effect of local blood circulation. Similarly, the partial vacuum of the compressed foam layer 1 exerts a negative pressure suction effect on the surface requiring soil removal and its deep soft tissue, and gradually discharges the dirt in the deep layer.

Further, as a preferred embodiment, the cross-sectional shape of the adsorption hole is one of a circle, a rectangle, an ellipse, a trapezoid, a semicircle, a semi-ellipse or a triangle.

Further, as a preferred embodiment, the thickness of the compressed foam layer 1 after liquid swell expansion is equal to 3 to 20 times the thickness of the compressed foam layer 1 before liquid absorbing expansion.

Further, as a preferred embodiment, the volume of the first adsorption chamber 10 after the liquid-swelling of the compressed foam layer 1 is equal to 2 to 30 times the volume of the first adsorption chamber 10 before the liquid-absorbent expansion of the compressed foam layer 1 .

Further, as a preferred embodiment, the volume of the second adsorption chamber 11 after the liquid-swelling of the compressed foam layer 1 is equal to 2 to 30 times the volume of the second adsorption chamber 11 before the liquid-absorbent expansion of the compressed-type foam layer 1 .

Further as a preferred embodiment, the compressed foam layer 1 is a layer of compressed superabsorbent polyvinyl alcohol material.

In addition, in the process of not being able to seal the wound or to seal the wound, the present invention mainly utilizes its own special structure and has the design features of dry compression, large opening and liquid absorbing ability, and has a "cylinder effect", which generates a strong suction force. Drain the viscous liquid into the material. At the same time, the liquid or oozing blood flows into the material in real time and rapidly, and the surface tension formed by the liquid flow and the pressure difference at different positions of the wound surface are inevitably formed to form micro-power. In this way, 24 hours of continuous action, micro-power can also improve the blood circulation of the wound or wound, reduce swelling, promote the growth of epithelial cells or granulation.

For mixed type, deep second degree burn wounds, based on the partial vacuum negative pressure effect of the structure of the present invention, the wound exudate is inhaled by the whole dressing, and the clinician can reduce the debridement intensity during surgery; and reduce the number of dressing changes. Because the intensity of debridement and the number of dressing changes are reduced, the damage of "skin island cells" gradually formed in mixed-type and deep second-degree burn wounds is also reduced, which is conducive to the formation of "peel island" and its “Pie Island” gradually merged to cover the wound. Reduce clinical skin grafting and scar residue after recovery.

The above is a detailed description of the preferred embodiments of the present invention, but the invention is not limited to the embodiments, and various modifications and substitutions can be made by those skilled in the art without departing from the spirit of the invention. Such equivalent modifications or alternatives are intended to be included within the scope of the claims.

Claims

A vacuum lock liquid treatment system, comprising: a compressed foam layer, an adhesive film, and a layer of a lock liquid material between the compressed foam layer and the compressed foam layer, the adhesive film being attached to the lock solution After the material layer is extended from the periphery of the material layer to the range of the layer of the lock liquid material and the layer of the compressed foam material, the applicator is formed to form a wrap around the wound surface, the layer of the lock liquid material comprising the layer of compressed water absorbing material and the outer surface of the layer of compressed water absorbing material a completely wrapped unidirectional liquid permeable surface material layer, the gap between the unidirectional liquid permeable surface material layer and the compressed water absorbing material layer forms a lock chamber, one end surface of the unidirectional liquid permeable surface material layer and the compressed foam layer Contacting, the adhesive film forms a first adsorption cavity between the inner surface of the appendage and the outer surface of the wound surface after the applicator is adhered around the wound surface, and the volume of the first adsorption cavity follows the compression type The foam layer expands and increases after aspirating.
The vacuum lock liquid treatment system according to claim 1, wherein the liquid after the liquid suction of the compressed foam layer enters the lock chamber through the unidirectional liquid permeable surface material layer.
The vacuum lock liquid treatment system according to claim 1, wherein the compressed foam layer is swelled and expanded, and the compressed foam layer is arranged in a three-dimensionally-adsorbed adsorption channel, and the adsorption channel forms a third adsorption. The cavity, the volume of the third adsorption chamber increases as the compressed foam layer expands after aspiration.
The vacuum lock liquid treatment system according to claim 2, wherein said compression type foam material layer is provided with a plurality of adsorption holes penetrating through the upper and lower end faces of the compression type foam material layer, each of said adsorption holes One end is in contact with the wound surface, and the open end of the adsorption hole is in contact with the inner surface of the unidirectional liquid-permeable surface material layer, and the inner passage of the adsorption hole forms a second adsorption chamber, and the volume of the second adsorption chamber is along with The layer of the compressed foam material expands and then increases.
The vacuum lock liquid treatment system according to claim 4, wherein the second adsorption chamber is in communication with the first adsorption chamber through the third adsorption chamber after the compressed foam layer is liquid-swelled.
The vacuum lock liquid therapy system according to claim 4, wherein the adsorption hole has a cross-sectional shape of one of a circular shape, a rectangular shape, an elliptical shape, a trapezoidal shape, a semicircular shape, a semi-elliptical shape or a triangular shape.
The vacuum lock liquid treatment system according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the thickness of the compressed foam layer after liquid swell expansion is equal to 3 to 20 times the compression foam layer The thickness before the liquid swells.
The vacuum lock liquid treatment system according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the volume of the first adsorption chamber after the liquid-swelling of the compressed foam layer is equal to 2 to 30 times The volume of the first adsorption chamber before the liquid-absorbent expansion of the compressed foam layer.
The vacuum lock liquid treatment system according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the volume of the second adsorption chamber after the liquid-swelling of the compressed foam layer is equal to 2 to 30 times The volume of the second adsorption chamber before the liquid-absorbent expansion of the compressed foam layer.
A vacuum lock liquid treatment system according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein said compressed foam layer is a layer of compressed superabsorbent polyvinyl alcohol material.