CN106420167B - Vacuum lock liquid treatment system - Google Patents

Vacuum lock liquid treatment system Download PDF

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Publication number
CN106420167B
CN106420167B CN201610908406.9A CN201610908406A CN106420167B CN 106420167 B CN106420167 B CN 106420167B CN 201610908406 A CN201610908406 A CN 201610908406A CN 106420167 B CN106420167 B CN 106420167B
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material layer
liquid
foam material
compression type
type foam
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CN106420167A (en
Inventor
朱新生
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Guangdong Meiji Biotechnology Co ltd
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Guangdong Meiji Biotechnology Co ltd
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Priority to CN201610908406.9A priority Critical patent/CN106420167B/en
Priority to PCT/CN2017/070344 priority patent/WO2018072347A1/en
Publication of CN106420167A publication Critical patent/CN106420167A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01008—Non-adhesive bandages or dressings characterised by the material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01021—Non-adhesive bandages or dressings characterised by the structure of the dressing
    • A61F13/01029—Non-adhesive bandages or dressings characterised by the structure of the dressing made of multiple layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01034—Non-adhesive bandages or dressings characterised by a property
    • A61F13/01042—Absorbency
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0246—Adhesive bandages or dressings characterised by the skin-adhering layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Materials For Medical Uses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

The invention discloses a vacuum lock liquid treatment system, which comprises a compression type foam material layer, a viscose adhesive film and a lock liquid material layer, wherein the viscose adhesive film is provided with adhesive wings adhered around a wound surface, the lock liquid material layer comprises a compression water absorption material layer and a one-way liquid permeability surface material layer, a liquid locking cavity is formed by a gap between the one-way liquid permeability surface material layer and the compression water absorption material layer, one end surface of the one-way liquid permeability surface material layer is contacted with the compression type foam material layer, a first adsorption cavity is formed between the inner surface of the adhesive wings and the outer surface of the wound surface after the viscose adhesive film is adhered around the wound surface through the adhesive wings, the volume of the first adsorption cavity is increased along with the expansion of the compression type foam material layer after liquid absorption, the absorbed liquid is locked in the liquid locking space through the one-way liquid permeable surface material layer and the compressed water absorption material layer, even if the water absorbing material layer is compressed, the liquid can not permeate back to the wound or the wound surface of the patient from the one-way liquid permeable surface material layer.

Description

Vacuum lock liquid treatment system
Technical Field
The invention relates to a medical instrument, in particular to a vacuum liquid locking treatment system.
Background
Due to the development of the industry, the number of particles in the air is increased, and the skin on the surface of a human body is hidden with some tiny dust to form dirt. Dirt on the surface of the skin can be cleaned by bathing, but dirt in the deep layer of the skin cannot be cleaned by bathing. Modern people try to clean the dirt on the deep layer of the skin by using a cleaning liquid, a cleaning patch with chemical substances, and other chemical substances, and although the dirt on the deep layer of the skin is cleaned to a certain extent, the residual chemical substances affect the skin.
And also in wound care. Wounds are generally protected by a wound dressing. The medical Polyurethane (PU) wound plaster is generally prepared by adopting an imported breathable PU base material, compounding a surface layer backing base material, slitting, sterilizing and packaging. The wound plaster can be only used for emergency treatment of small wounds, thereby playing the roles of temporary hemostasis and wound surface protection. It should be noted, however, that the time of use is not necessarily too long. If it is used for too long, the adhesive plaster on the outer layer of the wound patch is not breathable. The skin around and whitening of the wound and softening of the skin lead to secondary bacterial infections. This may further aggravate the wound. It can only provide good conditions for wound or wound healing without weeping of the wound or wound. However, when a wound or a wound surface is infiltrated in a large area, the wound patch cannot absorb liquid, and the exudate is remained on the surface of the wound or the wound surface, so that the wound or the wound surface is not healed easily, and a focus of bacterial breeding is formed. In addition, some wound patches for negative pressure suction and drainage are available for absorbing the exudate on the surface of a wound and sucking out necrotic tissues in the deep part of the wound, but the wound patches need to be externally connected with a negative pressure source to absorb the exudate in the wound. There is a compressed negative pressure vacuum system that can adsorb dirt deep in the skin and/or absorb wound exudate and aspirate necrotic tissue deep in the wound. However, although the sheet-shaped compressed foam layer in the vacuum system can absorb the liquid, the sheet-shaped compressed foam layer cannot lock the liquid, and when the exudate reaches a certain saturation degree and is pressed with force, the liquid can flow through the wound or the wound of the patient again, so that the ideal effect is not achieved.
Disclosure of Invention
The invention aims to provide a vacuum liquid-locking treatment system.
The solution of the invention for solving the technical problem is as follows: the vacuum lock liquid treatment system comprises a compression type foam material layer, an adhesive film and a lock liquid material layer positioned between the compression type foam material layer and the compression type foam material layer, the adhesive sticking film is attached to the liquid locking material layer, the periphery of the adhesive sticking film sequentially extends out of the ranges of the liquid locking material layer and the compression type foam material layer to form sticking wings which can be stuck around the wound surface, the liquid locking material layer comprises a compressed water absorbing material layer and a one-way liquid permeable surface material layer which completely wraps the outer surface of the compressed water absorbing material layer, a gap between the one-way liquid-permeable surface material layer and the compressed water-absorbing material layer forms a liquid-locking cavity, one end surface of the one-way liquid-permeable surface material layer is contacted with the compressed foam material layer, the adhesive film is adhered around the wound surface through the adhering wings, a first adsorption cavity is formed between the outer surfaces of the wound surfaces on the inner surfaces of the adhering wings, the volume of the first adsorption chamber increases as the compressed foam layer expands after imbibing liquid.
As a further improvement of the technical proposal, the liquid absorbed by the compression type foam material layer enters the liquid locking cavity through the one-way liquid permeable surface material layer.
As a further improvement of the above technical solution, three-dimensionally intercommunicated adsorption channels are arranged in the compression type foam material layer after the compression type foam material layer is imbibed and expanded, the adsorption channels form a third adsorption cavity, and the volume of the third adsorption cavity increases as the compression type foam material layer is imbibed and expanded.
As a further improvement of the above technical scheme, a plurality of adsorption holes penetrating through the upper and lower end faces of the compression type foam material layer are arranged in the compression type foam material layer, one end of each adsorption hole is in contact with the wound surface, the open end of each adsorption hole is in contact with the inner surface of the one-way liquid-permeable surface material layer, internal channels of the adsorption holes form a second adsorption cavity, and the volume of the second adsorption cavity is increased along with the expansion of the compression type foam material layer after liquid absorption.
As a further improvement of the technical scheme, after the compression type foam material layer absorbs liquid and expands, the second adsorption cavity is communicated with the first adsorption cavity through the third adsorption cavity.
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 technical scheme, the thickness of the compression type foam material layer after liquid absorption and expansion is equal to 3-20 times of the thickness of the compression type foam material layer before liquid absorption and expansion.
As a further improvement of the technical scheme, the volume of the first adsorption cavity after the compression type foam material layer is subjected to liquid absorption expansion is equal to 2-30 times of the volume of the first adsorption cavity before the compression type foam material layer is subjected to liquid absorption expansion.
As a further improvement of the technical scheme, the volume of the second adsorption cavity after the compression type foam material layer is subjected to liquid absorption expansion is equal to 2-30 times of the volume of the second adsorption cavity before the compression type foam material layer is subjected to liquid absorption expansion.
As a further improvement of the technical scheme, the compression type foam material layer is a compression high water absorption polyvinyl alcohol material layer.
The invention has the beneficial effects that: according to the invention, the first adsorption cavity is arranged, the compression type foam material layer expands after absorbing liquid, the adhesive film is gradually lifted, the closed space of the first adsorption cavity is larger and larger, the air is thinner and thinner, and partial vacuum is formed, so that negative pressure difference is inevitably formed by the partial vacuum of the compression type foam material layer on the position needing to be cleaned in an adhesion action or on a wound, a wound surface and the like. Because of the formation of the pressure difference, the invention inevitably generates 24-hour uninterrupted continuous negative pressure suction effect on the skin and other positions acted by the pressure difference, thereby achieving the effect of gradually removing dirt in the deep layer of the skin or sucking wound exudate; similarly, it also has the functions of gradually relieving swelling of wound granulation soft tissue and promoting local blood circulation. In addition, the absorbed liquid is locked in the liquid locking space through the one-way liquid-permeable surface material layer and the compressed water absorption material layer, and even if the compressed water absorption material layer is pressed, the liquid cannot seep back to the wound or the wound surface of the patient from the one-way liquid-permeable surface material layer.
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 obvious that the drawings described are only some embodiments of the invention, not all embodiments, and that those skilled in the art will be able to derive other designs and drawings from them without inventive effort.
FIG. 1 is a schematic view of the present invention applied to the periphery of a wound surface by a patch;
fig. 2 is a schematic view of the structure of the compressed foam layer of the present invention after imbibition and expansion.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliaries according to specific implementation conditions.
Referring to fig. 1-2, the vacuum lock liquid therapeutic system comprises a compression type foam material layer 1, an adhesive film 4 and a lock liquid material layer located between the compression type foam material layer 1 and the compression type foam material layer 1, wherein the adhesive film 4 is attached to the outer surface of the lock liquid material layer, and then extends outwards from the periphery of the outer surface of the lock liquid material layer in sequence to form a wing 40 capable of being attached around the wound surface, the lock liquid material layer comprises a compression water-absorbing material layer 3 and a one-way liquid-permeable surface material layer 2 completely wrapping the outer surface of the compression water-absorbing material layer 3, a gap between the one-way liquid-permeable surface material layer 2 and the compression water-absorbing material layer 3 forms a lock liquid cavity 20, one end surface of the one-way liquid-permeable compression surface material layer 2 is in contact with the compression type foam material layer 1, the adhesive film 4 is attached around the wound surface through the wing 40, and then a first absorption cavity 10 is formed between the inner surface of the wing 40 and the outer surface of the wound surface, the volume of the first adsorption chamber 10 increases as the compression type foam material layer 1 swells after imbibing liquid.
Through setting up first absorption chamber 10, inflation after 1 imbibition of compression type foam material layer, viscose pad pasting 4 is raised gradually, and the airtight space in first absorption chamber 10 is bigger and bigger, and the air is more and more thin, and local vacuum forms, and compression type foam material layer 1 local vacuum must form negative pressure differential to needs clear paste effect position or wound, surface of a wound etc.. Because of the formation of the pressure difference, the invention inevitably generates 24-hour uninterrupted continuous negative pressure suction effect on the skin and other positions acted by the pressure difference, thereby achieving the effect of gradually removing dirt in the deep layer of the skin or sucking wound exudate; in the same way, it also has the functions of gradually reducing swelling of granulation soft tissue of wound surface and promoting local blood circulation. In addition, the absorbed liquid is locked in the liquid locking space through the one-way 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 pressed, the liquid cannot seep back to the wound or the wound surface of the patient from the one-way liquid-permeable surface material layer 2.
Further as a preferred embodiment, the liquid absorbed by the compression type foam material layer 1 enters the liquid locking cavity 20 through the one-way liquid permeable surface material layer 2. The 3 imbibition back inflation of compression absorbent material layer, viscose pad pasting 4 is raised gradually, and along with the airtight space of lock sap cavity 20 is bigger and bigger, local vacuum further strengthens, and 3 local vacuum cooperation compression type foam material layers of compression absorbent material layer 1 produce long-time continuous negative pressure suction effect to surface of a wound and deep soft tissue, reach wound, surface of a wound sepage suction, and the effect that surface of a wound granulation soft tissue subsides swelling and promotion local blood ring gradually. The one side of the one-way liquid-permeable surface material layer 2 opposite to the lower end face of the compressed water-absorbing material layer 3 is a one-way liquid-permeable layer, and the one side of the one-way liquid-permeable surface material layer 2 opposite to the upper end face of the compressed water-absorbing material layer 3 is a water-impermeable layer. Namely, the liquid can only enter the liquid locking cavity 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, after the compression-type foam material layer 1 is imbibed and expanded, three-dimensionally intercommunicated adsorption channels are arranged in the compression-type foam material layer 1, and the adsorption channels form a third adsorption cavity, and the volume of the third adsorption cavity is increased along with the expansion of the compression-type foam material layer 1 after imbibing. Inflation behind 1 imbibition of compression type foam material layer, one-way liquidity surface material layer 2 and viscose pad pasting 4 are raised gradually, except that the airtight space of first absorption chamber 10 is bigger and bigger, local vacuum forms, the absorption passageway of 1 inside three-dimensional intercommunication of compression type foam material layer recovers gradually, local vacuum further strengthens, 1 local vacuum of compression type foam material layer produces long-time negative pressure suction effect that lasts to surface of a wound and its deep soft tissue, reach the wound, the surface of a wound sepage suction, the surface of a wound granulation soft tissue subsides gradually and promotes the effect of local blood ring. Similarly, the partial vacuum of the compression type foam material layer 1 generates negative pressure suction effect on the surface needing dirt removal and the deep soft tissue thereof, and gradually discharges the dirt in the deep layer. In addition, the liquid absorbed is locked in the liquid locking space through the one-way 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 pressed, the liquid can not seep back to the wound or the wound surface of the patient from the one-way liquid-permeable surface material layer 2.
Further as a preferable embodiment, a plurality of adsorption holes penetrating through the upper end surface and the lower end surface of the compression type foam material layer 1 are arranged in the compression type foam material layer 1, one end of each adsorption hole is in contact with a wound surface, the open end of each adsorption hole is in contact with the inner surface of the one-way liquid-permeable surface material layer 2, the internal passages of the adsorption holes form a second adsorption cavity 11, and the volume of the second adsorption cavity 11 is increased along with the expansion of the compression type foam material layer 1 after liquid absorption.
In a further preferred embodiment, after the compression-type foam material layer 1 is expanded by liquid absorption, the second adsorption chamber 11 communicates with the first adsorption chamber 10 via a third adsorption chamber.
Expand after 1 imbibition of compression type foam layer, viscose pad pasting 4 is raised gradually, except that the airtight space of first absorption chamber 10 is bigger and bigger, local vacuum forms, the absorption passageway of 1 inside three-dimensional intercommunication of compression type foam layer recovers gradually, local vacuum further strengthens, along with the airtight space of second absorption chamber 11 is bigger and bigger, local vacuum obtains very big enhancement, 1 local vacuum of compression type foam layer produces long-time negative pressure suction effect that lasts to surface of a wound and its deep soft tissue, reach the wound, the surface of a wound sepage suction, the surface of a wound granulation soft tissue subsides gradually and promotes the effect of local blood ring. Similarly, the partial vacuum of the compression type foam material layer 1 generates negative pressure suction effect on the surface needing dirt removal and the deep soft tissue thereof, and gradually discharges the dirt in the deep layer.
Further preferably, the cross-sectional shape of the adsorption hole is one of circular, rectangular, oval, trapezoidal, semicircular, semi-oval, or triangular.
In a further preferred embodiment, the thickness of the compressed foam layer 1 after liquid-absorbing expansion is 3 to 20 times the thickness of the compressed foam layer 1 before liquid-absorbing expansion.
In a further preferred embodiment, the volume of the first adsorption chamber 10 after the liquid-absorbing expansion of the compressed foam material layer 1 is 2 to 30 times the volume of the first adsorption chamber 10 before the liquid-absorbing expansion of the compressed foam material layer 1.
In a further preferred embodiment, the volume of the second adsorption cavity 11 after the liquid-absorbing expansion of the compressed foam material layer 1 is 2 to 30 times the volume of the second adsorption cavity 11 before the liquid-absorbing expansion of the compressed foam material layer 1.
Further, as a preferred embodiment, the compression type foam material layer 1 is a compression super absorbent polyvinyl alcohol material layer.
In addition, in the treatment of the wound surface which can not be sealed or does not need to be sealed, the invention mainly utilizes the design characteristics of drying and compressing, large opening and liquid suction capability of the special structure of the invention to have a pump effect, generates stronger suction force and drains viscous seepage into the material. Meanwhile, seepage or blood seepage rapidly flows into the material in real time, surface tension formed by liquid flow and pressure difference of different positions of the wound surface inevitably occur, and micro-power is formed. Thus, the micro-power can improve the blood circulation of the wound or the wound surface, reduce swelling, promote the growth of epithelial cells or granulation and the like after the action is continuously carried out for 24 hours.
For a mixed type burn wound surface with the depth of ǁ degrees, the wound surface seepage liquid is integrally sucked into the dressing under the action of local vacuum negative pressure based on the structure of the invention, and the debridement strength can be reduced when a clinician operates; the times of dressing change are reduced. Because the debridement intensity and the dressing change times are reduced, the injury of the dermal island cells gradually formed on the mixed type and deep ǁ -degree burn wound surfaces is also reduced, and the dermal island generation and the gradual fusion of the dermal islands to cover the wound surfaces are facilitated. Reduce scar residue after clinical skin grafting and recovery.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.

Claims (8)

1. Vacuum lock liquid treatment system, its characterized in that: the wound dressing comprises a compression type foam material layer, an adhesive film and a lock liquid material layer positioned between the compression type foam material layer and the adhesive film, wherein the adhesive film is attached to the lock liquid material layer, and then extends outwards from the periphery of the lock liquid material layer and the compression type foam material layer in sequence to form a wing capable of being attached to the periphery of a wound surface, the lock liquid material layer comprises a compression water absorption material layer and a one-way liquid-permeable surface material layer which completely wraps the outer surface of the compression water absorption material layer, a liquid locking cavity is formed by a gap between the one-way liquid-permeable surface material layer and the compression water absorption material layer, one end face of the one-way liquid-permeable surface material layer is contacted with the compression type foam material layer, liquid absorbed by the compression type foam material layer enters the liquid locking cavity through the one-way liquid-permeable surface material layer, the adhesive film is attached to the periphery of the wound surface through the wing, and a first absorption cavity is formed between the inner surface of the wing and the outer surface of the wound surface, the volume of the first adsorption cavity is increased along with the expansion of the compression type foam material layer after liquid absorption, a plurality of adsorption holes penetrating through the upper end face and the lower end face of the compression type foam material layer are arranged in the compression type foam material layer, one end of each adsorption hole is in contact with a wound surface, the open end of each adsorption hole is in contact with the inner surface of the one-way liquid-permeable surface material layer, the inner channel of each adsorption hole forms a second adsorption cavity, and the volume of the second adsorption cavity is increased along with the expansion of the compression type foam material layer after liquid absorption.
2. The vacuum lock fluid treatment system according to claim 1, wherein: and after the compression type foam material layer is subjected to liquid absorption expansion, adsorption channels which are communicated in a full three-dimensional mode are arranged in the compression type foam material layer, the adsorption channels form a third adsorption cavity, and the volume of the third adsorption cavity is increased along with the expansion of the compression type foam material layer after liquid absorption.
3. The vacuum lock fluid treatment system according to claim 1, wherein: after the compression type foam material layer is subjected to liquid absorption expansion, the second adsorption cavity is communicated with the first adsorption cavity through the third adsorption cavity.
4. The vacuum lock fluid treatment system according to claim 1, wherein: the cross section of the adsorption hole is in one of a circular shape, a rectangular shape, an oval shape, a trapezoidal shape, a semicircular shape, a semi-oval shape or a triangular shape.
5. The vacuum lock fluid treatment system according to claim 1 or 2 or 3 or 4, wherein: the thickness of the compressed foam material layer after liquid absorption and expansion is equal to 3-20 times of the thickness of the compressed foam material layer before liquid absorption and expansion.
6. The vacuum lock fluid treatment system according to claim 1 or 2 or 3 or 4, wherein: the volume of the first adsorption cavity after the compression type foam material layer is subjected to liquid absorption expansion is equal to 2-30 times of the volume of the first adsorption cavity before the compression type foam material layer is subjected to liquid absorption expansion.
7. The vacuum lock fluid treatment system according to claim 1 or 2 or 3 or 4, wherein: and the volume of the second adsorption cavity after the compression type foam material layer is subjected to liquid absorption expansion is equal to 2-30 times of the volume of the second adsorption cavity before the compression type foam material layer is subjected to liquid absorption expansion.
8. The lat fluid treatment system according to claim 1 or 2 or 3 or 4, wherein: the compression type foam material layer is a compression high water absorption polyvinyl alcohol material layer.
CN201610908406.9A 2016-10-18 2016-10-18 Vacuum lock liquid treatment system Active CN106420167B (en)

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Application Number Priority Date Filing Date Title
CN201610908406.9A CN106420167B (en) 2016-10-18 2016-10-18 Vacuum lock liquid treatment system
PCT/CN2017/070344 WO2018072347A1 (en) 2016-10-18 2017-01-06 Therapeutic vacuum fluid-locking system

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Application Number Priority Date Filing Date Title
CN201610908406.9A CN106420167B (en) 2016-10-18 2016-10-18 Vacuum lock liquid treatment system

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CN106420167A CN106420167A (en) 2017-02-22
CN106420167B true CN106420167B (en) 2022-05-24

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