CN115486989B - Negative pressure wound surface treatment device - Google Patents
Negative pressure wound surface treatment device Download PDFInfo
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- CN115486989B CN115486989B CN202211208397.4A CN202211208397A CN115486989B CN 115486989 B CN115486989 B CN 115486989B CN 202211208397 A CN202211208397 A CN 202211208397A CN 115486989 B CN115486989 B CN 115486989B
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- negative pressure
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- dressing
- liquid
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- 238000004381 surface treatment Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 145
- 239000003814 drug Substances 0.000 claims abstract description 103
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 229940079593 drug Drugs 0.000 claims abstract description 43
- 206010052428 Wound Diseases 0.000 claims description 200
- 208000027418 Wounds and injury Diseases 0.000 claims description 200
- 239000010410 layer Substances 0.000 claims description 99
- 238000012377 drug delivery Methods 0.000 claims description 43
- 239000012790 adhesive layer Substances 0.000 claims description 38
- 238000002347 injection Methods 0.000 claims description 37
- 239000007924 injection Substances 0.000 claims description 37
- 239000000758 substrate Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000009581 negative-pressure wound therapy Methods 0.000 claims 7
- 239000012528 membrane Substances 0.000 abstract description 15
- 238000011084 recovery Methods 0.000 abstract description 14
- 208000015181 infectious disease Diseases 0.000 abstract description 10
- 241000894006 Bacteria Species 0.000 abstract description 8
- 238000011282 treatment Methods 0.000 description 27
- 238000001035 drying Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000001647 drug administration Methods 0.000 description 4
- 230000035876 healing Effects 0.000 description 4
- 238000001802 infusion Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000009545 invasion Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000003855 Adhesive Lamination Methods 0.000 description 2
- 206010048038 Wound infection Diseases 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 230000004308 accommodation Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000416 exudates and transudate Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 229910052753 mercury Inorganic materials 0.000 description 1
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Classifications
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- A61F13/05—
-
- 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
- A61F13/00051—Accessories for dressings
- A61F13/00063—Accessories for dressings comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
-
- 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 plasters or dressings
- A61F13/0246—Adhesive plasters or dressings characterised by the skin adhering layer
-
- 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 plasters or dressings
- A61F13/0259—Adhesive plasters or dressings characterised by the release liner covering the skin adhering layer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/912—Connectors between dressing and drainage tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/92—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing with liquid supply means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/98—Containers specifically adapted for negative pressure wound therapy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention relates to the technical field of medical equipment, and discloses a negative pressure wound surface treatment device which comprises a negative pressure drug feeder, a plurality of combined film patches, a plurality of negative pressure connecting pipes and a plurality of drug feeding connecting pipes. According to the invention, a single combined type membrane patch or a combination of a plurality of combined type membrane patches is used for isolating a wound surface from the external environment, so that external bacteria and the like are prevented from invading the wound surface, the infection rate of the wound surface is reduced, the combined type membrane patch is of a transparent structure, the wound surface can be observed through the combined type membrane patch, the wound surface is convenient for medical staff to treat the wound, a negative pressure feeder is connected with a negative pressure mechanism through a negative pressure connecting pipe, a negative pressure environment is provided for the wound surface, redundant tissue liquid separated out from the wound surface is extracted through the negative pressure, the wound surface is dried, the generation of fresh tissues of the wound surface is promoted, and the recovery of the wound surface is accelerated.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a negative pressure wound surface treatment device.
Background
The negative pressure wound surface treatment technology is a wound surface treatment method with wide clinical application, and is characterized in that a sponge dressing with a drainage tube is covered on a wound surface, then a film is used for sealing, the drainage tube is connected with a negative pressure source, so that local part is in a negative pressure environment, and necrotic tissue and exudates of the wound surface are discharged out of the body through the drainage tube, thereby creating a good growth environment for wound surface repair and later recovery. The negative pressure wound treating apparatus has excellent healing effect on various acute and chronic wound treatments.
However, the existing negative pressure wound surface treatment device needs to fill a large amount of dressing on the wound surface when in use, the filling of the large amount of dressing is complicated in steps, and the large amount of dressing makes it difficult for medical staff to observe the wound surface, so that the treatment of the wound surface by the medical staff is not facilitated; and the existing wound treatment device only considers the effect of negative pressure on the wound, ignores the negative pressure treatment process, also needs to administer medicine to the wound, and when the medicine administration treatment is needed, needs to dismantle the part of the wound, so that the operation is complicated, the wound dressing is dismantled, the wound is contacted with the external environment, the wound infection is easy to generate, and the failure of the wound negative pressure treatment is caused.
The existing negative pressure wound surface treatment device adopts the same treatment mode for different wound surfaces, the membrane patch combination cannot be adjusted according to the size of the wound surfaces, and the mode that the size of the membrane patch cannot be adjusted or adjusted lacks flexibility.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a negative pressure wound surface treatment device which has the advantages that a transparent dressing is convenient for medical staff to observe, a proper film patch combination can be selected according to the size of a wound surface, and medicine administration treatment can be carried out while the film patch is not removed, and the like, and solves the problems that the dressing can not be used for blocking the medical staff to observe the wound surface, the wound surface is difficult to treat in time, and the operation is complicated and wound surface infection is easy to generate during medicine administration treatment.
(II) technical scheme
In order to solve the technical problems that the dressing can prevent medical staff from observing the wound surface and is difficult to treat the wound surface in time, and the operation is complicated and wound infection is easy to generate during drug administration treatment, the invention provides the following technical scheme: a negative pressure wound surface treatment device, which comprises a negative pressure drug feeder, a plurality of combined film patches, a plurality of negative pressure connecting pipes and a plurality of drug feeding connecting pipes; the combined type film patches can be used independently, and a plurality of combined type film patches can be used together after being stuck and combined; the combined type film patch comprises a base material layer, a dressing layer and release paper, wherein the base material layer and the dressing layer are made of transparent materials, the dressing layer is made of porous materials, and the release paper and the dressing layer are in adsorption fit and can be separated; the combined type film patch also comprises a negative pressure mechanism and a drug delivery mechanism; the negative pressure mechanism is connected with the negative pressure drug feeder through the negative pressure connecting pipe, the negative pressure drug feeder can generate negative pressure effect on the dressing layer, and the negative pressure effect can act on the wound surface; the medicine feeding mechanism is connected with the negative pressure medicine feeder through the medicine feeding connecting pipe, and the negative pressure medicine feeder can supply medicine liquid to the dressing layer; the negative pressure administration generates negative pressure and the process of supplying the liquid medicine is not performed simultaneously.
Preferably, the dressing layer comprises a central dressing region and an edge dressing region, wherein the central dressing region and the substrate layer are compositely fixed and cannot be separated; an adhesive layer is arranged between the edge dressing area and the substrate layer, and the edge dressing area and the substrate layer can be separated; after the edge dressing area is separated from the substrate layer, the adhesive layer is left on the surface of the substrate layer, the adhesive layer still has adhesiveness, and the edge dressing area has no adhesiveness.
Preferably, when the combined film patches are used independently, after all the edge dressing areas of one combined film patch are separated and removed, one combined film patch can be adhered to the wound surface through the adhesive layer.
Preferably, when the combined film patches are used in combination, the edge dressing areas of two adjacent combined film patches are overlapped, the overlapped edge dressing area of one of the two adjacent combined film patches is removed, and the exposed adhesive layer and the dressing layer of the other combined film patch are adhered and fixed, so that the combined film patches are used in combination.
Preferably, the negative pressure mechanism comprises a plurality of liquid suction holes, a plurality of liquid suction pipes and a liquid suction head, wherein the liquid suction holes are uniformly distributed on the outer surface of the central dressing area, and the liquid suction holes are respectively connected with the liquid suction head through the liquid suction pipes; the medicine feeding mechanism comprises a plurality of liquid injection holes, a plurality of liquid injection pipes and a liquid injection head, wherein the liquid injection holes are uniformly distributed on the outer surface of the central dressing area, and the liquid injection holes are respectively connected with the liquid injection head through the liquid injection pipes.
Preferably, when the combined film patch is used alone, the negative pressure connecting pipe is communicated with the liquid extracting head, and negative pressure is generated on the dressing layer through the liquid extracting pipe and the liquid extracting hole connected with the liquid extracting pipe, and the negative pressure can act on the wound surface; when the combined film patch is used independently, the drug delivery connecting pipe is communicated with the liquid injection head, and liquid medicine is supplied to the dressing layer through the liquid injection pipe and the liquid injection hole connected with the liquid injection pipe.
Preferably, the device further comprises a combined connecting pipe, wherein the combined connecting pipe is used for respectively communicating the negative pressure mechanisms of the combined film patches with the negative pressure connecting pipes when the combined film patches are combined for use; the combined connecting pipe is also used for respectively communicating the drug delivery mechanisms of the combined type film patches with the drug delivery connecting pipe when the combined type film patches are combined for use.
Preferably, a first unidirectional circulation mechanism is arranged in the negative pressure connecting pipes and is used for preventing liquid in the negative pressure connecting pipes from flowing back to the combined film adhesive; the inside second one-way circulation mechanism that is provided with of a plurality of the connecting pipes of dosing, second one-way circulation mechanism is used for preventing the inside liquid of connecting pipe of dosing to negative pressure doser backward flow.
Preferably, the negative pressure applicator comprises a negative pressure pump and an administration pump; the negative pressure pump is connected with a bottle washing device, a plurality of negative pressure connecting pipes are connected to the bottom end inside the bottle washing device, the bottle washing device is sealed, and the negative pressure pump provides negative pressure for the top end inside the bottle washing device; and after the tissue fluid sucked by the negative pressure connecting pipe under negative pressure enters the bottle washing, the tissue fluid stays at the bottom end of the bottle washing.
Preferably, the drug delivery pump is connected and is provided with a drug delivery bottle, a plurality of the drug delivery connecting pipes are all connected to the inside bottom of drug delivery bottle, after the drug delivery bottle holds the liquid medicine, the drug delivery pump to the positive pressure is applyed to drug delivery bottle liquid level top, drives the inside liquid medicine of drug delivery bottle flows into a plurality of inside the drug delivery connecting pipes.
(III) beneficial effects
Compared with the prior art, the invention provides a negative pressure wound surface treatment device, which has the following beneficial effects:
1. according to the negative pressure wound treatment device, a single combined type membrane patch or a combination of a plurality of combined type membrane patches is used for isolating a wound surface from the external environment, so that external bacteria and the like are prevented from invading the wound surface, the infection rate of the wound surface is reduced, each part of the combined type membrane patch is of a transparent structure, the wound surface can be observed through the combined type membrane patch, medical staff can conveniently conduct wound treatment, a negative pressure feeder is connected with a negative pressure mechanism through a negative pressure connecting pipe, a negative pressure environment is provided for the wound surface, redundant tissue liquid separated out from the wound surface is extracted through negative pressure, the wound surface is dried, the generation of fresh tissues of the wound surface is promoted, and the recovery of the wound surface is accelerated; the negative pressure drug feeder is communicated with the drug feeding mechanism through the drug feeding connecting pipe, so that when drug feeding treatment is needed to be carried out on the wound surface, the liquid medicine can be uniformly pumped into the wound surface, the healing of the wound surface is promoted through the effective coverage of the liquid medicine, and the recovery of the wound surface is accelerated.
2. The negative pressure wound surface treatment device firstly judges the number of combined film patches required to be used according to the size of a wound surface, then mutually pastes and combines a plurality of combined film patches required to be used in combination, wherein edge dressing areas of two adjacent combined film patches are overlapped, after the overlapped edge dressing areas are removed, a paste layer is pasted with a base material layer of the other combined film patch, in order to in the membrane subsides after the combination, there is only one deck dressing layer at most in optional position to prevent that the dressing layer from more influencing later stage negative pressure and the process of dosing, prevent that overlapping dressing layer from blockking the light pass, influence the transparency of overlapping region, thereby guarantee the visibility to the wound, in time observe the handling with medical staff.
3. According to the negative pressure wound surface treatment device, when a plurality of combined film patches are combined for use, liquid suction heads of two adjacent combined film patches are connected through the combined connecting pipes, and liquid injection heads of the two adjacent combined film patches are connected, so that only the end parts of the combined film patches are connected with a negative pressure drug feeder through the negative pressure connecting pipes and drug delivery connecting pipes, and negative pressure and drug delivery treatment on wounds covered by the film patches is facilitated; the outer side surface of the combined connecting pipe is provided with a sticking point at a certain distance, so that the combined connecting pipe and the surface of the base material layer of the combined film can be stuck, and the interference of the combined connecting pipe to the operation of medical staff is avoided.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a combined patch of the present invention;
FIG. 3 is a schematic view of the combined film patch of the present invention after release paper is removed;
FIG. 4 is a schematic view of the combined patch of the present invention in a stand-alone configuration;
FIG. 5 is a schematic illustration of a combination of the present invention;
FIG. 6 is a second schematic view of a combination of the combination type film patches of the present invention;
FIG. 7 is a schematic view of another direction of the combined film patch of the present invention;
fig. 8 is a schematic perspective view of the negative pressure applicator of the present invention.
In the figure: 1. a negative pressure drug delivery device; 11. a negative pressure pump; 111. washing the bottle; 12. a drug delivery pump; 121. a drug administration bottle; 2. a combined film patch; 21. a substrate layer; 211. an adhesive layer; 22. a dressing layer; 221. a central dressing region; 222. an edge dressing region; 23. release paper; 24. a negative pressure mechanism; 241. a liquid suction hole; 242. a liquid suction pipe; 243. a liquid extracting head; 25. a drug delivery mechanism; 251. a liquid injection hole; 252. a liquid injection pipe; 253. a liquid injection head; 3. a negative pressure connecting pipe; 4. a drug administration connecting tube; 5. and (5) combining the connecting pipes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As described in the background art, the present application provides a negative pressure wound surface treatment device in order to solve the above technical problems.
Referring to fig. 1 and 5, a negative pressure wound surface treatment device comprises a negative pressure drug feeder 1, a plurality of combined film patches 2, a plurality of negative pressure connecting pipes 3 and a plurality of drug feeding connecting pipes 4; the combined type film patches 2 can be used independently, and a plurality of combined type film patches 2 can be used together after being stuck and combined; the combined type film patch 2 comprises a base material layer 21, a dressing layer 22 and release paper 23, wherein the base material layer 21 and the dressing layer 22 are made of transparent materials, the dressing layer 22 is made of porous materials, and the release paper 23 and the dressing layer 22 are in adsorption fit and can be separated; the combined film patch 2 also comprises a negative pressure mechanism 24 and a drug delivery mechanism 25; the negative pressure mechanism 24 is connected with the negative pressure drug feeder 1 through the negative pressure connecting pipe 3, the negative pressure drug feeder 1 can generate negative pressure action on the dressing layer 22, and the negative pressure action can act on the wound surface; the medicine feeding mechanism 25 is connected with the negative pressure medicine feeder 1 through the medicine feeding connecting pipe 4, and the negative pressure medicine feeder 1 can supply medicine liquid to the dressing layer 22; the negative pressure applicator 1 generates negative pressure and the process of supplying the chemical liquid is not performed simultaneously.
When in use, the combined type film patches 2 are divided into different specifications according to the practical size, and the combined type film patches 2 with the same specification can be combined to form a film patch with larger coverage area for use.
When in use, medical staff firstly selects a combined type membrane patch 2 with proper specification according to the size of the wound surface of a patient; if the wound surface can be covered by the single combined type film patch 2, separating and removing the release paper 23 of the single combined type film patch 2 from the dressing layer 22, aligning the center of one surface of the dressing layer 22 with the center of the wound surface, and attaching and fixing the dressing layer 22 of the single combined type film patch 2 to the wound surface.
Then the negative pressure mechanism 24 of the single combined film patch 2 is connected with the negative pressure feeder 1 through the negative pressure connecting pipe 3, the feeding mechanism 25 of the single combined film patch 2 is connected with the negative pressure feeder 1 through the feeding connecting pipe 4, the negative pressure feeder 1 generates negative pressure, the negative pressure passes through the negative pressure connecting pipe 3 and the negative pressure mechanism 24 and passes through the porous material of the dressing layer 22, the negative pressure acts on the surface of a wound, in actual use, the negative pressure acting on the surface of the wound can be regulated through the negative pressure feeder 1, medical staff can adopt negative pressure of-25, -50, -75, -100, -125, -150, -175mm mercury column and the like according to the actual negative pressure requirement of the wound, and the negative pressure values are all safe negative pressure values of the wound so as to extract redundant tissue liquid separated out from the wound, and promote the generation of fresh tissues of the wound and accelerate the recovery of the wound through the negative pressure environment of the wound while guaranteeing the dryness of the wound;
when the wound surface needs to be subjected to drug delivery treatment, the negative pressure drug delivery device 1 does not generate negative pressure any more, the negative pressure drug delivery device 1 injects liquid medicine into the porous dressing layer 22 through the drug delivery connecting pipe 4 and the drug delivery mechanism 25, the liquid medicine is uniformly pumped into the wound surface part through the porous dressing layer 22 and is uniformly delivered to the wound surface part, the liquid medicine uniformly acts on the wound surface part through the dressing layer 22, after a period of drug delivery, the negative pressure of the negative pressure drug delivery device 1 is started again, the negative pressure is continuously provided for the wound surface, firstly, the redundant liquid medicine on the wound surface is pumped out through the negative pressure, then, the redundant tissue liquid separated out from the wound surface is continuously absorbed through the action of the negative pressure, and the continuous negative pressure treatment is carried out on the wound surface; in actual use, the administration time can be adjusted according to the actual administration condition by the operation of the negative pressure administration device 1 by medical staff.
Through the circulation of the negative pressure-administration-negative pressure process, when the administration treatment is not needed for the wound, the negative pressure is carried out on the wound, the redundant liquid medicine and tissue liquid of the wound are removed, the drying of the wound is ensured, the generation of fresh tissues of the wound is promoted through the negative pressure environment of the wound, and the recovery of the wound is accelerated.
When the wound surface cannot be completely covered by using the single combined type film patch 2, a plurality of combined type film patches 2 are required to be stuck and combined for use so as to adapt to the size of the wound surface; combining a plurality of combined film pastes 2 with the same specification to form a film paste with proper size, removing release paper 23 of each combined film paste 2, aligning the combined film paste with a wound surface, and applying the combined film paste to the wound surface; the negative pressure mechanism 24 of each combined type film patch 2 is connected with the negative pressure applicator 1 through a plurality of negative pressure connecting pipes 3, and the administration mechanism 25 of each combined type film patch 2 is connected with the negative pressure applicator 1 through a plurality of administration connecting pipes 4; the method is the same as that of using the single combined type film patch 2, the wound covered by the combined film patch 2 is circulated in the negative pressure-administration-negative pressure process through the negative pressure applicator 1, when the administration treatment is not needed on the wound, the negative pressure is carried out on the wound, the redundant liquid medicine and tissue liquid of the wound are removed, the drying of the wound is ensured, the generation of fresh tissues of the wound is promoted through the negative pressure environment of the wound, and the recovery of the wound is accelerated.
When a single combined film patch 2 is used or a plurality of combined film patches 2 are used in combination, the wound surface is isolated from the external environment through the film patches, so that the invasion of external bacteria and the like into the wound surface is avoided, the infection rate of the wound surface is reduced, each part of the combined film patch 2 is of a transparent structure, the wound surface can be observed through the combined film patch 2, the wound surface is convenient for medical staff to treat, the negative pressure feeder 1 is connected with the negative pressure mechanism 24 through the negative pressure connecting pipe 3, a negative pressure environment is provided for the wound surface, the redundant tissue liquid separated from the wound surface is extracted through the negative pressure, the wound surface is ensured to be dried, the generation of fresh tissues of the wound surface is promoted, and the recovery of the wound surface is accelerated; the negative pressure drug feeder 1 is communicated with the drug feeding mechanism 25 through the drug feeding connecting pipe 4, so that when drug feeding treatment is required to be carried out on the wound surface, the liquid medicine can be uniformly pumped into the wound surface, the healing of the wound surface is promoted through the effective coverage of the liquid medicine, and the recovery of the wound surface is accelerated.
Further, referring to fig. 2-4, the dressing layer 22 includes a central dressing region 221 and an edge dressing region 222, where the central dressing region 221 is compositely fixed to and cannot be separated from the substrate layer 21; an adhesive layer 211 is arranged between the edge dressing area 222 and the substrate layer 21, and the edge dressing area 222 can be separated from the substrate layer 21; after the edge dressing region 222 is separated from the substrate layer 21, the adhesive layer 211 remains on the surface of the substrate layer 21, and the adhesive layer 211 still has tackiness and the edge dressing region 222 does not have tackiness.
The central dressing area 221 and the edge dressing area 222 are made of transparent porous materials, the composite fixing mode between the central dressing area 221 and the substrate layer 21 includes, but is not limited to, hot-press lamination, adhesive lamination, etc., the edge dressing area 222 is connected with the substrate layer 21 through the adhesive layer 211, the adhesive layer 211 is a self-adhesive layer, and the self-adhesive layer is fixed on the area of the substrate layer 21 corresponding to the edge dressing area 222, the edge dressing area 222 can be separated from the adhesive layer 211, after the edge dressing area 222 is separated, the area of the substrate layer 21 corresponding to the separated edge dressing area 222 can be adhered on a wound surface through the exposed adhesive layer 21, or a plurality of combined film patches 2 are adhered and fixed through the adhesive layer 21.
Further, referring to fig. 4, when the combined film patch 2 is used alone, after all the edge dressing areas 222 of one combined film patch 2 are separated and removed, one combined film patch 2 can be adhered to the wound surface through the adhesive layer 211.
When the combined film patches 2 are combined, referring to fig. 5-7, the edge dressing areas 222 of two adjacent combined film patches 2 are overlapped, the overlapped edge dressing area 222 of one of the two adjacent combined film patches 2 is removed, and the exposed adhesive layer 211 is adhered and fixed with the dressing layer 22 of the other combined film patch 2, so that the combined film patches 2 are combined.
When the combined film patch 2 is used alone, referring to fig. 2-4, all edge dressing areas 222 of the combined film patch 2 are removed, all adhesive layers 211 around a central dressing area 221 are exposed, after the center of the combined film patch 2 is aligned with the center of a wound surface, the combined film patch 2 is covered on the wound surface, and the combined film patch 2 is adhered to the wound surface through the adhesive layer 211 by pressing the area of the base material layer 21 where the adhesive layer 211 is positioned, so that the wound surface is isolated from the external space, external bacteria and the like are prevented from invading the wound surface, and the infection rate of the wound surface is reduced.
When a plurality of combined film patches 2 are combined for use, please refer to fig. 5-7, firstly, the number of combined film patches 2 to be used is judged according to the wound size, then, the combined film patches 2 to be used are mutually stuck to each other to form a film patch matched with the wound size, wherein the edge dressing areas 222 of two adjacent combined film patches 2 are overlapped, then, the overlapped edge dressing area 222 of any one of the two adjacent combined film patches 2 is removed, and the sticking layer 211 exposed by the edge dressing area 222 is removed through the combined film patches 2 and stuck to the base material layer 21 of the other combined film patch 2, so that in the combined film patches, only one dressing layer 22 is at most arranged at any position to prevent the dressing layer 22 from influencing more later negative pressure and the drug administration process, and simultaneously, the overlapped dressing layer 22 is prevented from blocking the penetration of medical light rays, thus ensuring the visibility of the wound and facilitating the observation and treatment of medical staff; when the combination of the plurality of combined film patches 2 is completed, the edge dressing areas 222 on the outer ring of the combined film patches are completely removed, so that the film patches are adhered and fixed with the skin around the wound by removing the exposed adhesive layer 211 of the edge dressing areas 222, the wound surface is isolated from the external space, external bacteria and the like are prevented from invading the wound surface, and the infection rate of the wound surface is reduced.
Further, referring to fig. 2-3, the negative pressure mechanism 24 includes a plurality of liquid suction holes 241, a plurality of liquid suction pipes 242 and a liquid suction head 243, the liquid suction holes 241 are uniformly distributed on the outer surface of the central dressing area 221, and the plurality of liquid suction holes 241 are respectively connected with the liquid suction head 243 through the liquid suction pipes 242; the drug delivery mechanism 25 comprises a plurality of liquid injection holes 251, a plurality of liquid injection pipes 252 and a liquid injection head 253, wherein the liquid injection holes 251 are uniformly distributed on the outer surface of the central dressing area 221, and the liquid injection holes 251 are respectively connected with the liquid injection head 253 through the liquid injection pipes 252.
Preferably, in actual use, the liquid suction tube 242 and the liquid injection tube 252 may be disposed between the substrate layer 21 and the dressing layer 22, and only the liquid suction head 243 and the liquid injection head 253 are exposed out of the substrate layer 21, so as to prevent excessive exposed lines, which results in improvement of operation difficulty.
In use, by connecting the negative pressure connecting pipe 3 at the liquid suction head 243, the negative pressure provided by the negative pressure drug feeder 1 can act on each liquid suction hole 241 through the liquid suction pipe 242, and due to the negative pressure, the negative pressure is provided at the wound surface covered by the combined film patch 2, so that the redundant tissue liquid and the like of the wound surface can be pumped out through the negative pressure, and the tissue generation of the wound surface can be promoted through the negative pressure; by connecting the administration connecting tube 4 at the liquid injection head 253, the negative pressure applicator 1 doses as needed to the respective liquid injection holes 251 through the administration connecting tube 4; the negative pressure applicator 1 is not activated during the administration process.
Further, when the combined film patch 2 is used alone, referring to fig. 1, the negative pressure connection tube 3 is connected to the liquid suction head 243, and a negative pressure effect is generated on the dressing layer 22 through the liquid suction tube 242 and the liquid suction hole 241 connected to the liquid suction tube 242, and the negative pressure effect can act on the wound surface; when the combined film patch 2 is used alone, the administration connection tube 4 is connected to the infusion head 253, and the medical fluid is supplied to the dressing layer 22 through the infusion tube 252 and the infusion hole 251 connected to the infusion tube 252.
Referring to fig. 5-7, the combined film patch further comprises a combined connection pipe 5, wherein the combined connection pipe 5 is used for respectively communicating the negative pressure mechanisms 24 of the combined film patches 2 with the negative pressure connection pipes 3 when the combined film patches 2 are combined; the combination connection pipe 5 is also used to communicate the administration mechanisms 25 of the plurality of combination type patches 2 with the administration connection pipes 4, respectively, when the plurality of combination type patches 2 are used in combination.
Wherein, the combined connecting pipe 5 is divided into a connecting main pipe and a plurality of connecting branch pipes, the connecting main pipe is used for being connected with the negative pressure connecting pipe 3 or the administration connecting pipe 4, the plurality of connecting branch pipes are used for being connected with the liquid extracting head 243 or the liquid injecting head 253 respectively, and when the connecting branch pipes are not connected, the connecting branch pipes are closed.
In actual use, the outer side surface of the combined connecting pipe 5 is provided with an adhesive point at a certain distance, and the combined connecting pipe 5 and the surface of the base material layer 21 of the combined film patch 2 can be adhered; preferably, the surface of the substrate layer 21 of the combined type film patch 2 is provided with a plurality of fixing clamps, and the combined type connecting pipe 5 and the surface of the substrate layer 21 are fixed through the fixing clamps, so that the interference of the combined type connecting pipe 5 on the operation of medical staff is avoided.
When a plurality of combined film patches 2 are combined for use, the liquid suction heads 243 of two adjacent combined film patches 2 are connected through the combined connecting pipes 5, so that when the combined film patches 2 are combined for use, the combined film patches are connected with the negative pressure feeder 1 only by using the negative pressure connecting pipe 3 and the drug delivery connecting pipe 4 at the end parts of the combined film patches, and negative pressure and drug delivery treatment on wounds covered by the film patches is facilitated.
Further, referring to fig. 1, a first unidirectional circulation mechanism is disposed inside the plurality of negative pressure connection pipes 3, and the first unidirectional circulation mechanism is used for preventing liquid inside the negative pressure connection pipes 3 from flowing back to the combined film patch 2; the inside of the plurality of administration connecting pipes 4 is provided with a second unidirectional circulation mechanism which is used for preventing liquid inside the administration connecting pipes 4 from flowing back to the negative pressure administration device 1.
Wherein, in actual use, negative pressure connecting pipe 3 and the connecting pipe 4 of dosing can be the same kind of intercommunication hose, and this intercommunication hose is inside to be provided with one-way circulation mechanism, and this one-way circulation mechanism can be the check valve, be used for the one-way structure that prevents backward flow through like tricuspid valve structure etc. this intercommunication hose all marks the sign of circulation direction, through the sign of circulation direction to make medical staff can judge its inside liquid one-way flow direction, distinguish with the purpose through medical staff.
And in practical application, negative pressure medicine feeder 1 still is provided with the accommodation area that is used for rolling winding negative pressure connecting pipe 3 and administration connecting pipe 4, through the winding post that holds the district, can accomodate unnecessary negative pressure connecting pipe 3 and the winding of administration connecting pipe 4 to prevent that the more negative pressure connecting pipe 3 of length and the operation of administration connecting pipe 4 to medical staff from causing the influence.
Further, referring to fig. 1 and 8, the negative pressure applicator 1 includes a negative pressure pump 11 and an administration pump 12; the negative pressure pump 11 is connected with a wash bottle 111, a plurality of negative pressure connecting pipes 3 are connected to the inner bottom end of the wash bottle 111, the wash bottle 111 is sealed, and the negative pressure pump 11 provides negative pressure for the inner top end of the wash bottle 111; the tissue fluid sucked by the negative pressure connecting pipe 3 enters the wash bottle 111 and stays at the bottom end of the wash bottle 111.
The medicine feeding pump 12 is connected and is provided with medicine feeding bottle 121, and a plurality of medicine feeding connecting pipes 4 are all connected in the inside bottom of medicine feeding bottle 121, and after medicine feeding bottle 121 held the liquid medicine, medicine feeding pump 12 is to applying the malleation to medicine feeding bottle 121 liquid level top, and inside medicine feeding bottle 121 is driven to inside a plurality of medicine feeding connecting pipes 4.
Thereby provide the negative pressure to the inside top of wash bottle 111 through negative pressure pump 11, through this negative pressure, after will getting into wash bottle 111 through negative pressure connecting pipe 3 and negative pressure mechanism 24 suction tissue liquid, stay in the bottom of wash bottle 111, collect tissue liquid and waste liquid, and be convenient for discharge tissue liquid and waste liquid that collect through the valve of wash bottle 111 bottom offer, and through providing the negative pressure to the inside top of wash bottle 111, prevent that tissue liquid and waste liquid that collects from directly getting into negative pressure pump 11 inside, cause the pollution to negative pressure pump 11, influence the use of negative pressure medicine feeder 1.
By filling the drug solution into the drug feeding bottle 121, when the drug solution is required to be supplied to the wound surface, the drug feeding pump 12 applies positive pressure above the liquid surface of the drug feeding bottle 121, and drives the drug solution inside the drug feeding bottle 121 to flow into the drug feeding connection tubes 4.
Working principle:
when in use, medical staff firstly selects a combined type membrane patch 2 with proper specification according to the size of the wound surface of a patient; if the wound surface can be covered by the single combined type film patch 2, separating and removing the release paper 23 of the single combined type film patch 2 from the dressing layer 22, aligning the center of one surface of the dressing layer 22 with the center of the wound surface, and attaching and fixing the dressing layer 22 of the single combined type film patch 2 to the wound surface.
The central dressing area 221 and the edge dressing area 222 are made of transparent porous materials, the composite fixing mode between the central dressing area 221 and the substrate layer 21 includes, but is not limited to, hot-press lamination, adhesive lamination, etc., the edge dressing area 222 and the substrate layer 21 are connected through the adhesive layer 211, the adhesive layer 211 is a self-adhesive layer, the self-adhesive layer is fixed on the area of the substrate layer 21 corresponding to the edge dressing area 222, the edge dressing area 222 can be separated from the adhesive layer 211, after the edge dressing area 222 is separated, the area of the substrate layer 21 corresponding to the separated edge dressing area 222 can be adhered on a wound surface through the exposed adhesive layer 21, or a plurality of combined film patches 2 can be adhered and fixed through the adhesive layer 21; when the combined film patch 2 is used independently, all edge dressing areas 222 of the combined film patch 2 are removed, all adhesive layers 211 around the central dressing area 221 are exposed, the combined film patch 2 is covered on the wound surface after the center of the combined film patch 2 is aligned with the center of the wound surface, and the combined film patch 2 is adhered on the wound surface through the adhesive layer 211 by pressing the area of the base material layer 21 where the adhesive layer 211 is positioned, so that the wound surface is isolated from the external space, the invasion of external bacteria and the like into the wound surface is avoided, and the infection rate of the wound surface is reduced.
Then the negative pressure mechanism 24 of the single combined type membrane patch 2 is connected with the negative pressure drug feeder 1 through the negative pressure connecting pipe 3, the drug feeding mechanism 25 of the single combined type membrane patch 2 is connected with the negative pressure drug feeder 1 through the drug feeding connecting pipe 4, the negative pressure drug feeder 1 generates negative pressure, the negative pressure passes through the negative pressure connecting pipe 3 and the negative pressure mechanism 24 and acts on the surface of a wound surface through the porous material of the dressing layer 22, so that redundant tissue liquid separated out from the wound surface is extracted, the drying of the wound surface is ensured, the generation of fresh tissues of the wound surface is promoted through the negative pressure environment of the wound surface, and the recovery of the wound surface is accelerated.
When the wound surface needs to be subjected to drug delivery treatment, the negative pressure drug delivery device 1 does not generate negative pressure any more, the negative pressure drug delivery device 1 injects liquid medicine into the porous dressing layer 22 through the drug delivery connecting pipe 4 and the drug delivery mechanism 25, the liquid medicine is uniformly pumped into the wound surface part through the porous dressing layer 22, the liquid medicine is uniformly delivered to the wound surface part, the liquid medicine uniformly acts on the wound surface part through the dressing layer 22, after a period of drug delivery (usually after 5 minutes after drug delivery is finished), the negative pressure of the negative pressure drug delivery device 1 is started again, the negative pressure is continuously provided for the wound surface, firstly, the redundant liquid medicine of the wound surface is extracted through the negative pressure, then, the redundant tissue liquid separated out from the wound surface is continuously absorbed through the action of the negative pressure, and continuous negative pressure treatment is performed on the wound surface.
Through the circulation of the negative pressure-administration-negative pressure process, when the administration treatment is not needed for the wound, the negative pressure is carried out on the wound, the redundant liquid medicine and tissue liquid of the wound are removed, the drying of the wound is ensured, the generation of fresh tissues of the wound is promoted through the negative pressure environment of the wound, and the recovery of the wound is accelerated.
When the wound surface cannot be completely covered by using the single combined type film patch 2, a plurality of combined type film patches 2 are required to be stuck and combined for use so as to adapt to the size of the wound surface; combining a plurality of combined film pastes 2 with the same specification to form a film paste with proper size, removing release paper 23 of each combined film paste 2, aligning the combined film paste with a wound surface, and applying the combined film paste to the wound surface; the negative pressure mechanism 24 of each combined type film patch 2 is connected with the negative pressure applicator 1 through a plurality of negative pressure connecting pipes 3, and the administration mechanism 25 of each combined type film patch 2 is connected with the negative pressure applicator 1 through a plurality of administration connecting pipes 4; the method is the same as that of using the single combined type film patch 2, the wound covered by the combined film patch 2 is circulated in the negative pressure-administration-negative pressure process through the negative pressure applicator 1, when the administration treatment is not needed on the wound, the negative pressure is carried out on the wound, the redundant liquid medicine and tissue liquid of the wound are removed, the drying of the wound is ensured, the generation of fresh tissues of the wound is promoted through the negative pressure environment of the wound, and the recovery of the wound is accelerated.
Wherein, the edge dressing areas 222 of two adjacent combined film patches 2 are overlapped, then the overlapped edge dressing area 222 of any one of the two adjacent combined film patches 2 is removed, and the exposed adhesive layer 211 of the edge dressing area 222 and the substrate layer 21 of the other combined film patch 2 are adhered by the combined film patch 2, so that in the combined film patch, at most, only one dressing layer 22 is arranged at any position, thereby preventing the dressing layer 22 from affecting the later negative pressure and the drug delivery process more, preventing the overlapped dressing layer 22 from blocking the penetration of light and affecting the transparency of the overlapped area, thereby ensuring the visibility of wounds, and facilitating the timely observation and treatment of medical staff; when the combination of the plurality of combined film patches 2 is completed, the edge dressing areas 222 on the outer ring of the combined film patches are completely removed, so that the film patches are adhered and fixed with the skin around the wound by removing the exposed adhesive layer 211 of the edge dressing areas 222, the wound surface is isolated from the external space, external bacteria and the like are prevented from invading the wound surface, and the infection rate of the wound surface is reduced.
When a single combined film patch 2 is used or a plurality of combined film patches 2 are used in combination, the wound surface is isolated from the external environment through the film patches, so that the invasion of external bacteria and the like into the wound surface is avoided, the infection rate of the wound surface is reduced, each part of the combined film patch 2 is of a transparent structure, the wound surface can be observed through the combined film patch 2, the wound surface is convenient for medical staff to treat, the negative pressure feeder 1 is connected with the negative pressure mechanism 24 through the negative pressure connecting pipe 3, a negative pressure environment is provided for the wound surface, the redundant tissue liquid separated from the wound surface is extracted through the negative pressure, the wound surface is ensured to be dried, the generation of fresh tissues of the wound surface is promoted, and the recovery of the wound surface is accelerated; the negative pressure drug feeder 1 is communicated with the drug feeding mechanism 25 through the drug feeding connecting pipe 4, so that when drug feeding treatment is required to be carried out on the wound surface, the liquid medicine can be uniformly pumped into the wound surface, the healing of the wound surface is promoted through the effective coverage of the liquid medicine, and the recovery of the wound surface is accelerated.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A negative pressure wound surface treatment device, which is characterized in that: comprises a negative pressure drug feeder (1), a plurality of combined film patches (2), a plurality of negative pressure connecting pipes (3) and a plurality of drug feeding connecting pipes (4);
the combined type film patches (2) can be used independently, and a plurality of combined type film patches (2) can be used together after being stuck and combined;
the combined type film patch (2) comprises a base material layer (21), a dressing layer (22) and release paper (23), wherein the base material layer (21) and the dressing layer (22) are made of transparent materials, the dressing layer (22) is made of porous materials, and the release paper (23) and the dressing layer (22) are adsorbed and attached and can be separated;
the combined type film patch (2) further comprises a negative pressure mechanism (24) and a drug delivery mechanism (25);
the negative pressure mechanism (24) is connected with the negative pressure drug feeder (1) through the negative pressure connecting pipe (3), the negative pressure drug feeder (1) can generate negative pressure effect on the dressing layer (22), and the negative pressure effect can act on a wound surface;
the medicine feeding mechanism (25) is connected with the negative pressure medicine feeder (1) through the medicine feeding connecting pipe (4), and the negative pressure medicine feeder (1) can supply medicine liquid to the dressing layer (22);
the dressing layer (22) comprises a central dressing region (221) and an edge dressing region (222), wherein the central dressing region (221) and the substrate layer (21) are compositely fixed and cannot be separated;
the negative pressure mechanism (24) comprises a plurality of liquid suction holes (241), a plurality of liquid suction pipes (242) and a liquid suction head (243), the liquid suction holes (241) are uniformly distributed on the outer surface of the central dressing area (221), and the liquid suction holes (241) are respectively connected with the liquid suction head (243) through the liquid suction pipes (242);
the drug delivery mechanism (25) comprises a plurality of liquid injection holes (251), a plurality of liquid injection pipes (252) and a liquid injection head (253), wherein the liquid injection holes (251) are uniformly distributed on the outer surface of the central dressing area (221), and the liquid injection holes (251) are respectively connected with the liquid injection head (253) through the liquid injection pipes (252);
the negative pressure feeder (1) generates negative pressure and the process of supplying liquid medicine is not performed simultaneously;
the combined film patch (2) is characterized by further comprising a combined connecting pipe (5), wherein the combined connecting pipe (5) is used for respectively communicating negative pressure mechanisms (24) of the combined film patches (2) with the negative pressure connecting pipes (3) when the combined film patches (2) are combined for use;
the combined connecting pipe (5) is also used for respectively communicating the drug delivery mechanisms (25) of the combined film patches (2) with the drug delivery connecting pipes (4) when the combined film patches (2) are combined.
2. The negative pressure wound therapy device of claim 1, wherein:
an adhesive layer (211) is arranged between the edge dressing area (222) and the substrate layer (21), and the edge dressing area (222) can be separated from the substrate layer (21);
after the edge dressing area (222) is separated from the substrate layer (21), the adhesive layer (211) is remained on the surface of the substrate layer (21), the adhesive layer (211) still has adhesiveness, and the edge dressing area (222) has no adhesiveness.
3. A negative pressure wound therapy device according to claim 2, wherein: when the combined film patches (2) are used independently, after all the edge dressing areas (222) of one combined film patch (2) are separated and removed, one combined film patch (2) can be stuck to a wound surface through the sticking layer (211).
4. A negative pressure wound therapy device according to claim 2, wherein: when the combined film patches (2) are used in a combined mode, the edge dressing areas (222) of two adjacent combined film patches (2) are overlapped, the overlapped edge dressing areas (222) of one of the two adjacent combined film patches (2) are removed, and the exposed adhesive layer (211) and the dressing layer (22) of the other combined film patch (2) are adhered and fixed, so that the combined film patches (2) are used in a combined mode.
5. A negative pressure wound therapy device according to claim 3, wherein: when the combined film patch (2) is used independently, the negative pressure connecting pipe (3) is communicated with the liquid extracting head (243), and negative pressure is generated on the dressing layer (22) through the liquid extracting pipe (242) and the liquid extracting hole (241) connected with the liquid extracting pipe (242), and the negative pressure can act on a wound surface;
when the combined film patch (2) is used alone, the drug delivery connecting pipe (4) is communicated with the liquid injection head (253), and liquid medicine is supplied to the dressing layer (22) through the liquid injection pipe (252) and the liquid injection hole (251) connected with the liquid injection pipe (252).
6. The negative pressure wound therapy device of claim 1, wherein: a first unidirectional circulation mechanism is arranged in the negative pressure connecting pipes (3) and is used for preventing liquid in the negative pressure connecting pipes (3) from flowing back to the combined film patch (2);
the inside of a plurality of the administration connecting pipes (4) is provided with a second unidirectional circulation mechanism, and the second unidirectional circulation mechanism is used for preventing liquid in the administration connecting pipes (4) from flowing back to the negative pressure administration device (1).
7. The negative pressure wound therapy device of claim 1, wherein: the negative pressure drug feeder (1) comprises a negative pressure pump (11) and a drug feeding pump (12);
the negative pressure pump (11) is connected with a bottle washing device (111), a plurality of negative pressure connecting pipes (3) are connected to the inner bottom end of the bottle washing device (111), the bottle washing device (111) is sealed, and the negative pressure pump (11) provides negative pressure for the inner top end of the bottle washing device (111);
the tissue fluid sucked by the negative pressure connecting pipe (3) under negative pressure enters the washing bottle (111) and then stays at the bottom end of the washing bottle (111).
8. The negative pressure wound therapy device of claim 7, wherein: the utility model discloses a medicine feeding bottle, including dosing bottle (121), dosing pump (12), a plurality of connecting pipe (4) all connect dosing bottle (121) inside bottom, after dosing bottle (121) hold the liquid medicine, dosing pump (12) to dosing bottle (121) liquid level top is exerted the malleation, drive dosing bottle (121) inside liquid medicine inflow a plurality of inside connecting pipe (4) of dosing.
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