CN111467586B - Portable negative pressure drainage device - Google Patents
Portable negative pressure drainage device Download PDFInfo
- Publication number
- CN111467586B CN111467586B CN202010302481.7A CN202010302481A CN111467586B CN 111467586 B CN111467586 B CN 111467586B CN 202010302481 A CN202010302481 A CN 202010302481A CN 111467586 B CN111467586 B CN 111467586B
- Authority
- CN
- China
- Prior art keywords
- cavity
- negative pressure
- pipeline
- radiation
- wound surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 191
- 230000009471 action Effects 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 claims description 119
- 239000002699 waste material Substances 0.000 claims description 42
- 238000009792 diffusion process Methods 0.000 claims description 26
- 238000011282 treatment Methods 0.000 claims description 22
- 238000003491 array Methods 0.000 claims description 10
- 238000000149 argon plasma sintering Methods 0.000 claims description 5
- 239000013589 supplement Substances 0.000 abstract description 5
- 230000035876 healing Effects 0.000 abstract description 4
- 206010052428 Wound Diseases 0.000 description 140
- 208000027418 Wounds and injury Diseases 0.000 description 140
- 239000003814 drug Substances 0.000 description 63
- 230000000694 effects Effects 0.000 description 27
- 230000008901 benefit Effects 0.000 description 19
- 239000012530 fluid Substances 0.000 description 12
- 238000009826 distribution Methods 0.000 description 11
- 230000008595 infiltration Effects 0.000 description 9
- 238000001764 infiltration Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 239000011148 porous material Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 229940079593 drug Drugs 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 238000001959 radiotherapy Methods 0.000 description 5
- 210000001519 tissue Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 201000009310 astigmatism Diseases 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000005574 cross-species transmission Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000011269 treatment regimen Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 206010011985 Decubitus ulcer Diseases 0.000 description 1
- 208000008960 Diabetic foot Diseases 0.000 description 1
- 208000004210 Pressure Ulcer Diseases 0.000 description 1
- 208000000558 Varicose Ulcer Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004962 physiological condition Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- 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
- A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Vascular Medicine (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to a portable negative pressure drainage device which at least comprises a first cavity and a pipeline penetrating through the first cavity, wherein a liquid inlet of the pipeline is connected and communicated with a drainage hole of the first cavity, the pipeline is provided with a second cavity capable of elastically contracting, so that the second cavity is arranged in the first cavity, a part of the first cavity, which is in contact with a wound surface, is provided with a plurality of through holes, so that the first cavity and the pipeline form a channel through a gap of the wound surface, and under the condition that the second cavity contracts under the negative pressure action of a pump connected with the pipeline, liquid in a supplement assembly connected with the first cavity reaches the wound surface through a space between the first cavity and the pipeline under the negative pressure action. The invention can clean or radiate the wound surface while realizing portable negative pressure drainage, thereby accelerating the tissue healing of the wound surface.
Description
Technical Field
The invention relates to the technical field of medical care, in particular to a portable negative pressure suction device.
Background
The current negative pressure drainage treatment devices are of various types and widely applied to acute and chronic wounds, including orthopedics, soft tissues, skin transplantation, pressure sores, lower limb venous ulcers, diabetic feet, surgical infection, postoperative wounds and the like. Doctors can evaluate the factors such as the size, the depth, the seepage quantity, whether the wound is infected and the like according to the past disease history, the current physiological condition, the current medication condition, the autonomous ability and the like of the patient, and the doctor can inform the patient whether to use the negative pressure drainage device for treatment after comprehensive consideration.
The current negative pressure drainage device generally and singly carries out negative pressure drainage, only pay attention to whether will but neglected the good advantage of utilizing negative pressure to combine the medicine to carry out the treatment with the negative pressure. For example, chinese patent CN109172305A discloses a negative pressure therapeutic apparatus with adjustable pressure, which comprises a negative pressure cup, a negative pressure spring, a negative pressure operating rod, and a negative pressure locking switch, or comprises a negative pressure cup and a negative pressure piston. The invention reduces the volume by adjusting the negative pressure operating rod or the negative pressure piston, realizes the treatment negative pressure in the negative pressure cup, and has convenient operation.
For example, chinese patent 107952118A discloses a novel minimally invasive negative pressure drainage device, which comprises a negative pressure drainage tube and a negative pressure drainage device, wherein the end of the negative pressure drainage tube is connected to the inlet of the negative pressure drainage device through a plug, the rear end surface of the tube body of the negative pressure drainage device is provided with a positioning plate, the positioning plate is connected to the rear end surface of the tube body of the negative pressure drainage device, the negative pressure drainage device is internally provided with a syringe needle latch rod, and the syringe needle latch rod is provided with a positioning groove; the invention has the advantages that: the operation area venous drainage device can be accurately controlled, the negative pressure drainage is sufficient, the closing of the invalid cavity is exact, the venous return of the operation area can be effectively promoted, and the healing of the incision is promoted; the damage to surrounding tissues, especially fragile tissues such as blood vessels and nerves is small; therefore, the vacuum suction device is safe, economical, effective and convenient, the negative pressure can be automatically controlled, and the suction volume is large.
The two examples, which are typical negative pressure drainage devices in the prior art, can only drain body fluid of a wound surface although the body volume is small, neglects the therapeutic effect of negative pressure on the wound and neglects the promotion effect of negative pressure on liquid medicine.
In the prior art, a portable and light-weight negative pressure drainage device which can realize drainage by utilizing negative pressure and can treat wounds by combining liquid medicine is not available for the time being.
Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, as the inventor studies a lot of documents and patents while making the present invention, but the space is not detailed to list all the details and contents, however, this invention doesn't have these prior art features, but this invention has all the features of the prior art, and the applicant reserves the right to add related prior art in the background art.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a portable negative pressure drainage device, which at least comprises a first cavity and a pipeline penetrating through the first cavity, and is characterized in that a liquid inlet of the pipeline is connected and communicated with a drainage hole of the first cavity, the pipeline is provided with a second cavity capable of elastically contracting, so that the second cavity is arranged in the first cavity, a part of the first cavity, which is in contact with a wound surface, is provided with a plurality of through holes, so that the first cavity forms a channel with the pipeline through a gap of the wound surface, and under the condition that the second cavity contracts under the negative pressure action of a pump connected with the pipeline, liquid in a supplementary assembly connected with the first cavity reaches the wound surface through the space between the first cavity and the pipeline under the negative pressure action. In the prior art, the pipe 17 is a straight pipe, and has the disadvantages that viscous waste liquid near the liquid inlet rapidly enters the pipe to cause blockage, and the waste liquid at the far end of the liquid inlet is not gathered. Under the condition that the pipeline is blocked, partial residue can appear in the waste liquid at the far end of the liquid inlet, so that the drainage effect of the waste liquid of the wound surface is incomplete, and the infection of the wound surface is worsened. According to the invention, the second cavity capable of elastically contracting is arranged in the pipeline, so that when the pump is started, air in the second cavity and waste liquid near the liquid inlet flow in the pipeline together and enter the storage device of the pump. In the initial process, the second cavity gradually elastically contracts, and the air in the second cavity gradually reduces the pressure of the negative pressure, so that the waste liquid at the far end around the liquid inlet has time to collect to the liquid inlet. After the second cavity is shrunk, the negative pressure is recovered to the original pressure, so that waste liquid near the liquid inlet is continuously sucked, and waste liquid residue around the wound is reduced.
In the prior art, the shape between two cavities of a negative pressure treatment device is fixed, only flowing liquid input can be provided, the liquid input stops under the condition that negative pressure disappears, a wound surface can only contact a small amount of liquid medicine within a short time of negative pressure work, and an area of the wound surface which is not in contact with the liquid medicine has no chance to further contact the liquid medicine. This is a significant disadvantage for wounds that require large amounts of medical fluid to prolong the time of infiltration. According to the wound dressing, an elastic first inflation body is arranged in a space between the first cavity and the pipeline, the first inflation body is connected with a supplement assembly through the pipeline penetrating through the first cavity, so that the first inflation body and the pipeline form a channel through a wound gap, liquid in the supplement assembly is filled in the first inflation body and the wound based on the negative pressure action under the condition that the second cavity contracts based on the negative pressure action of a pump connected with the pipeline, and the first inflation body generates elastic deformation and extrudes the liquid in the first inflation body to overflow to the wound based on the elastic recovery and extrusion action of the second cavity under the condition that the negative pressure in the pipeline disappears. The elastic contractible second cavity and the elastic deformable second inflation body are arranged in a matched mode, so that under the condition that negative pressure exists, a large amount of liquid medicine enters the first inflation body to flow and be stored based on the negative pressure effect, and meanwhile flows to a wound surface based on the negative pressure effect and circulates to a pipeline to be discharged. Under the condition that the negative pressure disappears, the second cavity recovers elastically and expands in volume, so that the first inflator is extruded to further overflow part of the liquid medicine stored in the first inflator in a porous mode and flow to the wound surface, and secondary liquid medicine input and infiltration are achieved. At the moment, the negative pressure effect is avoided, the liquid medicine can be infiltrated on the wound surface in a large area as much as possible, and the liquid medicine can better reach all areas of the wound surface, so that the cleaning and treatment effects of the negative pressure device are improved.
According to a preferred embodiment, the shell of the first cavity, which is in contact with the wound surface, is provided with an arc-shaped curved surface and protrudes outwards so as to be adapted to the concave wound surface, and the drainage port is arranged in the center of the arc-shaped curved surface, so that waste liquid of the wound surface is gathered towards the center under the action of negative pressure.
According to a preferred embodiment, the elasticity of the first cavity is different from the elasticity coefficient of the second cavity, and the elasticity coefficient of the second cavity is greater than the elasticity coefficient of the first cavity, so that the second cavity deforms to a greater extent than the first cavity under the action of the negative pressure, so that the first inflatable body has a space for elastic expansion. The advantage that so set up lies in, the deformation degree of second cavity is greater than the deformation degree of first cavity under the effect of negative pressure, can provide more spaces and supply the first body of filling to carry out the elastic expansion, and the elastic expansion of second cavity can extrude more volumes of the first body of filling when the negative pressure disappears, realizes that more liquid medicines spill over to the surface of a wound, further improves the effect of the contact of the surface of a wound full zone of liquid medicine and infiltration. Moreover, compare with the casing that can not deform, but the casing of first cavity especially first casing sets up the advantage that elastic deformation lies in, can realize that first body fills because the deformation that first casing received external force oppression overflows more liquid medicine. For example, in the case where the negative pressure disappears, it is possible to promote the medical fluid in the first inflatable body to overflow more by slightly pressing the first housing appropriately to deform.
According to a preferred embodiment, the contact part of the first cavity and the wound surface is set to be a radiation layer of non-ultraviolet radiation, the radiation layer is provided with a plurality of radiation LED chips arranged in a plurality of arrays, and hollow gaps exist among the plurality of radiation LED chips to form a radiation net. Through setting up the radiation layer into the second casing, not only can fix first body of filling in first cavity, can also carry out radiation therapy to the surface of a wound. According to the invention, the density of the radiation array is set by combining the viscosity characteristic and the drainage characteristic of the waste liquid, so that the density of the radiation array is increased along with the increase of the distance from the drainage hole, the drainage of the liquid is facilitated, the pipeline blockage caused by too high density of a radiation layer is avoided, the radiation effect is not reduced, and the tissue healing of a wound surface is promoted. The surface of the first cavity is also provided with at least one wire connection end for signal connection of the control device and the dressing device and simultaneous transmission of electric energy and electric signals. The line connection end is connected with the radiation layer through a waterproof signal line.
According to a preferred embodiment, the surface of the radiation layer facing the wound bed comprises a light diffusion layer provided with a plurality of light diffusion holes to diffuse the radiation of the radiation LED chip to diffuse the radiation treatment area while insulating the heat of the radiation layer. The advantage of such an arrangement is that firstly, the light scattering layer is prevented from stabbing or scratching the wound surface, so that the wound is further deteriorated; secondly, through going into the liquid mouth and running through first hole and third hole, surface of a wound liquid can directly get into the pipeline under the negative pressure effect, need not pass through radiation layer and astigmatism layer, has reduced the hindrance that the waste liquid got into the pipeline.
According to a preferred embodiment, a first hole penetrating through the liquid inlet of the pipeline is formed in the center of the radiation layer of the first cavity, a second hole penetrating through the liquid inlet of the pipeline is formed in the center of the light scattering layer on the surface, facing the wound surface, of the radiation layer, and the first hole and the second hole are sleeved at the liquid inlet of the pipeline so that waste liquid of the wound surface can be directly gathered at the liquid inlet of the pipeline under the action of negative pressure. The liquid can reach the liquid inlet without passing through the radiation layer and the light diffusion layer, so that the obstruction of liquid flow is reduced, and the liquid drainage effect is further improved.
According to a preferred embodiment, the device further comprises a control device, the control device is connected with the radiation layer through a waterproof wire penetrating through the pipeline, and the radiation layer performs radiation irradiation according to the adjustment instruction of the control device and the corresponding radiation area, radiation frequency, duty ratio and radiation duration. Through radiation treatment with different wavelengths, various bacteria can be effectively killed, recovery of wound surfaces is further promoted, and treatment effect is improved.
According to a preferred embodiment, the supplementary assembly, the control device and/or the pump connected to the first chamber are arranged in an orderly manner in a common housing. The portable electric water heater is arranged in the shell, is favorable for portable carrying, and is convenient to use.
According to a preferred embodiment, the surface of the radiation layer is an arc-shaped curved surface and protrudes in the direction of the wound surface, a certain distance exists between the liquid inlet of the pipeline and the radiation layer, the surface of the light diffusion layer is an arc-shaped curved surface and protrudes in the direction of the wound surface, and the arc-shaped curved surfaces of the radiation layer and the light diffusion layer are recessed towards the liquid inlet under the negative pressure effect. Thereby forming a state that the arc-shaped curved surface faces the liquid inlet. The advantage of so setting up lies in, and the surface of contact with the surface of a wound is more level and smooth, avoids the fish tail surface of a wound.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of another preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of a wound structure of the present invention;
FIG. 4 is a schematic view of the structure of the radiation layer of the present invention; and
FIG. 5 is a schematic view of the structure of the light diffusion layer of the present invention.
List of reference numerals
17: a pipeline; 31: a first cavity; 32: a second cavity; 33: an isolation layer; 34: a wound surface; 38: a drainage hole; 41: a first charging body; 42: a second inflatable body; 43: a radiation layer; 44: a light diffusion layer; 50: a supplementary component; 60: a control device; 70: a pump; 431: a radiation LED chip; 432: a signal line; 433: a first hole; 434: a second hole; 441: a third aperture; 442: an astigmatism hole.
Detailed Description
The following detailed description is made with reference to fig. 1 to 5 of the drawings.
As shown in FIG. 1, the present invention provides a portable negative pressure drainage device. The invention may also be an application device having a control apparatus. Preferably, the invention can also be a portable negative pressure therapy device, or a negative pressure radiation therapy device, or a negative pressure therapy device with radiation function, etc.
As shown in fig. 1, the portable negative pressure drainage device includes at least a portable control assembly and a dressing device. The control assembly is detachably connected with the radiation device through at least two pipelines. Preferably, the control assembly comprises at least the supplementary assembly 50, the control device 60 and/or the pump 70 arranged in an orderly manner in a common housing.
The supplement assembly 50 is used for supplementing liquid medicine to the wound surface in the dressing. Preferably, the supplementary assembly is a bottle filled with a liquid medicine. Preferably, the refill unit is removably mounted in the body. Preferably, the bottle mouth storing the liquid medicine is clamped at the inlet of the pipeline for inputting the liquid in a liquid-tight manner. Preferably, the inlet of the pipeline is provided with a switch valve in signal connection with the control device 60. So that the replenishment of the liquid medicine is turned on or off by the control of the control means. Preferably, a sealing ring is arranged at the position, clamped with the bottle mouth, of the pipeline inlet to prevent the liquid medicine from flowing out.
Preferably, the control device 60 is a controller in which a preset instruction is stored. Preferably, the controller can be an application specific integrated chip, a processor, a logic editor or a single chip, or a controller. Preferably, the shell is provided with a plurality of keys connected with the control device.
Preferably, the pump 70 is a negative pressure pump or a vacuum pump. Preferably, the pump 70 is a negative pressure pump or a vacuum pump with a small volume for convenient carrying. Preferably, the control device 60 is connected to the pump 70 through a signal line, thereby controlling the pump 70 to be turned on or off.
The dressing device comprises at least a first cavity 31 and a conduit 17 extending through the first cavity. The surface of the first cavity 31 is provided with at least two through-pipes, including a first through-pipe and a second through-pipe. The first through pipe connecting port is used for detachably connecting a first through pipe connected with the supplementary assembly. The second-pipe connection port is used for detachably connecting a second-pipe connected to the pump 70. The detachable mode can be a sleeve joint, for example, a pipeline is sleeved on the pipeline connecting port. The second pipe connection port is communicated with the pipeline 17.
Preferably, the first cavity 31 is an oval cavity or a circular cavity having an arc-shaped curved surface. Preferably, the shell of the first chamber 31 comprises two parts, the first part being a first shell arranged outside the wound. The adhesive tape attaches the first housing around the skin surrounding the wound to secure the dressing apparatus. The second part is a second shell body which is attached to the wound surface of the wound. The second housing may be provided integrally with the first housing or may be detachably provided separately. The second housing is provided with a plurality of through holes or gaps through which a fluid such as liquid or gas passes. The first shell and the second shell are shells with arc-shaped curved surfaces. The first and second housings are joined together to form a first chamber 31. The second housing is the portion of the first cavity 31 that contacts the wound bed 34. Preferably, the duct 17 is detachable from the first housing and is cleaned.
Preferably, the outer side edge of the first shell is provided with at least two sheet-shaped edge lugs, and the edge lugs are used for being stuck on the skin around the wound by adhesive tapes to fix the dressing device. Preferably, the edge ear may surround the first housing for a circle. Thereby facilitating the tape to secure the dressing device from any convenient orientation. After the first chamber 31 is fixed, the first chamber and the wound space form a closed space, or an approximately closed space in which only fine air can flow.
Wherein the pipe 17 runs through or is arranged between the first and second shells of the first cavity. The first end of the duct 17 is fixed to the first housing and the second end is fixedly connected to and extends through the drainage hole 38 in the center of the second housing, so that the duct 17 extends through the first cavity. The second end of the conduit 17 is a liquid inlet. Preferably, the second casing of the first cavity 31 contacting the wound surface 34 has an arc-shaped curved surface and protrudes outwards to adapt to the concave wound surface, and the drainage port 38 is disposed at the center of the arc-shaped curved surface, so that the waste liquid of the wound surface is gathered towards the center under the action of negative pressure.
The duct 17 is provided with an elastically contractible second cavity 32 so that the second cavity 32 is disposed inside the first cavity 31. The part of the first cavity 31 contacting the wound surface 34 is provided with a plurality of through holes, so that the first cavity 31 forms a channel with the pipeline 17 through the gap of the wound surface.
Wherein, a plurality of through holes on the first cavity 31 are distributed in a density mode that the distance from the liquid inlet of the pipeline 17 is in a positive trend by taking the liquid inlet as a center. That is, the density of the through holes close to the liquid inlet is smaller, and the density of the through holes far away from the liquid inlet is larger. The advantage that so set up lies in, is favorable to getting into most liquid of first cavity and is preferred from the distant through-hole infiltration of entering the liquid mouth and contact the surface of a wound from the distance to gathering to entering the liquid mouth under the effect of negative pressure, be favorable to enlarging the area of contact of liquid and the surface of a wound, preferably, a plurality of through-holes on the first cavity 31 use pipeline 17's income liquid mouth as the center, carry out inhomogeneous circle array distribution according to the density mode that is forward trend with the distance of first siphunculus connector. That is, the distribution density of the through holes close to the first through-tube connection port is small, and the distribution density of the through holes far from the first through-tube connection port is large. In general, the first through connection port is disposed at an eccentric position of the first cavity 31, so that the liquid entering the first through connection port cannot be uniformly distributed in a short time and can not infiltrate into the wound surface. Therefore, the distribution density of the through holes close to the first through pipe connecting port is low, so that the liquid at the position close to the first through pipe connecting port can permeate into the wound at a low speed, more liquid can be promoted to flow to the position far from the first through pipe connecting port, and then permeate into the wound. The advantage of such an arrangement is that it is advantageous for the liquid entering the first cavity 31 to penetrate the wound as evenly as possible, thereby avoiding the problem of the defect that the local wound does not come into contact with the liquid.
Under the action of the negative pressure, the through-holes of the first cavity may be deformed, resulting in a deformed orifice, such as a narrowed orifice or an expanded orifice. Preferably, the apertures of the through holes are arranged in a manner that is not exactly equal. Preferably, the aperture of the through-hole is set in inverse proportion to the distance of the liquid inlet. Preferably, the inverse ratio parameter can be set according to requirements, and the invention does not limit the fixed parameter value. That is, the aperture of the through-hole at a distance close to the inlet is larger than the aperture of the through-hole at a distance far from the inlet. Preferably, the difference in the pore diameters of the two through holes is not more than 1 time. Under the condition that the through hole of the first cavity deforms based on the action of negative pressure, the position close to the liquid inlet is easier to deform. Therefore, the through holes distributed according to non-uniform density and non-uniform pore diameter can avoid the defect that all the through holes in the same position area have narrow pore channels or widened pore channels, so that the liquid entering the first cavity further expands the area of the penetrated wound surface.
Preferably, the second chamber 32 is an elastically deformable chamber that contracts in volume based on the action of negative pressure in the case where the pump 70 is started and outputs negative pressure. The isolation layer 33 is a shell of the second cavity and is an elastically contracted shell. In the event that the negative pressure disappears, the second lumen 32 expands in volume and recovers to its original shape. For example, the insulation layer 33 of the second cavity 32 is a rubber bladder with a diameter larger than the diameter of the tubing 17. Or the second cavity is of any structure which can be realized by the prior art and can contract in volume under the action of negative pressure and restore in volume under the condition that the negative pressure disappears. Preferably, the second cavity is elastically contracted around the pipe as a central axis, and a space allowing fluid to flow is still formed in communication with the pipe 17 after the contraction.
In the case where the second cavity 32 contracts due to the negative pressure of the pump 70 connected to the tube 17, the liquid in the supplementary assembly 50 connected to the first cavity 31 reaches the wound surface 34 through the space between the first cavity 31 and the tube 17 due to the negative pressure. The advantage of the second chamber being elastically contractible is that the change in the buffer of suction against the liquid for the initial period of time can be adjusted.
In the prior art, the pipe 17 is a straight pipe. During the initial period of time when the pump 70 is activated, the wound surface near the inlet is rapidly drained of waste fluid. The waste liquid comprises pus, body fluid or medicinal liquid with bacteria for a long time. Moreover, the waste liquid is a viscous liquid containing human tissue fluid. The disadvantage of the straight pipe 17 is that the viscous waste liquid near the inlet rapidly enters the pipe and causes clogging, and the waste liquid at the far end of the inlet does not accumulate. Under the condition that the pipeline is blocked, partial residue can appear in the waste liquid at the far end of the liquid inlet, so that the drainage effect of the waste liquid of the wound surface is incomplete, and the infection of the wound surface is worsened. The advantage of providing the duct 17 with an elastically collapsible second cavity is that the second cavity 32 initially stores a portion of air. When the pump 70 is activated, the air in the second chamber flows in the conduit 17 together with the waste liquid near the inlet and into the storage means of the pump 70. In the initial process, the second cavity gradually elastically contracts, and the air in the second cavity gradually reduces the pressure of the negative pressure, so that the waste liquid at the far end around the liquid inlet has time to collect to the liquid inlet. After the second cavity is shrunk, the negative pressure is recovered to the original pressure, so that waste liquid near the liquid inlet is continuously sucked, and waste liquid residue around the wound is reduced.
Preferably, the second cavity is part of the duct 17. When the second chamber is elastically contracted, for example, the dummy lantern type is partially contracted towards the axial center of the pipeline, the length of the pipeline 17 is not changed, namely the position of the liquid inlet or the drainage port is not changed.
Alternatively, the second cavity is arranged on the duct 17 in a manner surrounding a portion of the duct 17, wherein the portion of the duct within the second cavity is provided with a plurality of through holes communicating with the second cavity.
Preferably, the second cavity 32 is disposed at or near the second end of the conduit 17. Preferably, where provided at the second end of conduit 17, the through-hole of the second chamber communicates with the drainage port 38. Disposed proximate the second end, the second end of the duct 17 communicates with the drainage port. The advantage of setting up at the second end lies in, and at the in-process of second cavity elastic shrinkage, its pressure to the surface of a wound diminishes to make the clearance increase between second casing and the surface of a wound, make the waste liquid assemble to income liquid mouth or drainage mouth more easily.
Preferably, in the case that the liquid in the replenishing assembly 50 is a cleaning liquid medicine for wound surface cleaning, the cleaning liquid medicine enters the first cavity from the first through pipe. And through the through-hole dispersion entering each region of surface of a wound of a plurality of first cavitys, because the negative pressure effect of the drainage mouth of surface of a wound central authorities gathers to the drainage mouth, gets into the storage device of pump 70 through pipeline 17, realizes the disinfection and the washing of surface of a wound, helps driving the remaining waste liquid of surface of a wound along with the flow of washing liquid medicine.
In the conventional arrangement, the dispersion density of the through holes of the second housing is completely the same. The second shell is of an arc-shaped structure, and under the ideal state that the wound surface of the wound is vertically upward, the liquid medicine can be firstly gathered at the bottom of the arc-shaped structure and cannot be dispersed to the far periphery of the wound surface. The liquid medicine enters the central area of the wound surface and then rapidly enters the pipeline 17 under the action of negative pressure, and the probability that the area far away from the center of the wound surface contacts the liquid medicine is extremely low. Untreated wounds deteriorate very quickly, making recovery of the wound slower, which is completely detrimental to effective treatment of the wound. Preferably, the plurality of through holes of the second housing of the first cavity of the present invention are arranged with the drainage port as a center and with a tendency of increasing distribution density. The advantage of so setting up lies in, the more distribution of liquid medicine can be around the surface of a wound, has avoided the position of surface of a wound periphery to obtain the washing or the treatment of liquid medicine. In the process that the liquid medicine gathers to the drainage opening along with the effect of negative pressure, more liquid medicine can flow to the wound area near the drainage opening, consequently, the through-hole near the drainage opening is less, and density is great can not influence the washing or the treatment of the wound of corresponding position. According to a preferred embodiment, a first inflatable body 41 with elasticity is arranged in the space between the first cavity 31 and the duct 17. The first filling body 41 is connected to the supplementary assembly 50 by a first through pipe penetrating the first cavity. So that the first inflatable body 41 forms a passage with the duct 17 through the wound bed gap. Preferably, the second cavity 32 is disposed in a groove of the first bladder 41 in a manner of pressing the first bladder 41. Preferably, the first filling body is a porous material. Preferably, the shape of the first filling body is adapted to the shape of the first cavity and a recess is left adapted to the shape of the second cavity and the duct 17. Preferably, the first inflatable body is a porous material with elastic memory and elastic recovery. In case the second chamber is elastically contracted, the volume of the first balloon is expanded based on elastic force recovery.
In the case that the second cavity 32 contracts due to the negative pressure of the pump 70 connected to the pipeline 17, the liquid in the supplement assembly 50 fills the first inflation body 41 and the wound surface 34 due to the negative pressure, and in the case that the negative pressure in the pipeline 17 disappears, the first inflation body 41 elastically deforms due to the elastic recovery of the second cavity 32 and the extrusion effect, and extrudes the liquid in the first inflation body 41 to overflow the wound surface 34.
In the prior art, the shape between two cavities of a negative pressure treatment device is fixed, only flowing liquid input can be provided, the liquid input is stopped under the condition that negative pressure disappears, a wound surface can only contact a small amount of liquid medicine in a short time of negative pressure work, and an area of the wound surface which is not in contact with the liquid medicine has no chance to further contact the liquid medicine. This is a significant disadvantage for wounds that require large amounts of medical fluid to prolong the time to infiltrate. The advantage of the invention is that by matching the elastically contractible second cavity with the elastically deformable second inflatable body, under the condition of negative pressure, the liquid medicine largely enters the first inflatable body for flowing and storing based on the negative pressure effect, and simultaneously flows to the wound surface based on the negative pressure effect and circulates to the pipeline 17 for discharging. Under the condition that the negative pressure disappears, the second cavity recovers elastically and expands in volume, so that the first inflator is extruded to further overflow part of the liquid medicine stored in the first inflator in a porous mode and flow to the wound surface, and secondary liquid medicine input and infiltration are achieved. At the moment, the negative pressure effect is avoided, the liquid medicine can be infiltrated on the wound surface in a large area as much as possible, and the liquid medicine can better reach all areas of the wound surface, so that the cleaning and treatment effects of the negative pressure device are improved. Without the first inflatable body, the liquid medicine does not contact the wound surface in a uniform input manner under the action of negative pressure, but enters the wound surface through a part of the through holes and rapidly flows out through the pipeline 17. This is disadvantageous for the treatment of wounds. The defect of uneven liquid medicine input can be obviously improved by arranging the first filling body. The first inflator can fully absorb the liquid medicine and uniformly overflow the liquid medicine under the condition of extrusion, thereby realizing the function of adjusting the uniform input of the liquid medicine. Meanwhile, as the liquid medicine does not need to run off, the liquid medicine can flow and gather and reach a part of wound surface area which is not contacted with the liquid medicine, so that the contact and infiltration of the whole area of the wound surface of the liquid medicine are further realized, and the treatment effect is improved.
Preferably, the elasticity of the first cavity 31 is different from that of the second cavity 32, and the elasticity of the second cavity 32 is greater than that of the first cavity 31, so that the second cavity 32 deforms to a greater extent than the first cavity 31 under the negative pressure, so that the first inflatable body 41 has a space for elastic expansion. The advantage that so set up lies in, the deformation degree of second cavity 32 is greater than first cavity 31's deformation degree under the effect of negative pressure, can provide more spaces and supply the first body 41 that fills to carry out the elastic expansion, and the elastic expansion of second cavity 32 can extrude more volumes of the first body that fills when the negative pressure disappears, realizes that more liquid medicines spill over to the surface of a wound, further improves the effect of the contact of the surface of a wound full zone of liquid medicine and infiltration. Moreover, compare with the casing that can not deform, but the casing of first cavity especially first casing sets up the advantage that elastic deformation lies in, can realize that first body fills because the deformation that first casing received external force oppression overflows more liquid medicine. For example, in the case where the negative pressure disappears, it is possible to promote the medical fluid in the first inflatable body to overflow more by slightly pressing the first housing appropriately to deform.
Preferably, as shown in fig. 3 and 4, the contact portion of the first cavity 31 with the wound bed 34 is provided with a radiation layer 43 of non-ultraviolet radiation. I.e. the second housing is a radiation layer 43 of non-ultraviolet radiation. The radiation layer 43 is provided with a plurality of radiation LED chips 431 arranged in a plurality of arrays. Hollow-out gaps exist among the plurality of radiation LED chips 431 so as to form a radiation net.
Preferably, the radiation layer 43 is fixedly connected to the first housing. The radian of the arc-shaped curved surface of the radiation layer 43 which is approximately spherical is opposite to the radian direction of the first shell, so that the radiation layer 43 and the first shell form a first cavity which is circular or elliptical. Wherein the liquid inlet of the pipe 17 does not penetrate the radiation layer. The radiation layer does not include the first hole 433. Under the condition that the second cavity elastically contracts due to the action of negative pressure, the arc-shaped curved surface of the radiation layer 43 is reversely deformed based on the action force of the negative pressure, so that the radiation layer is closer to the liquid inlet.
Preferably, as shown in fig. 4, the plurality of radiation arrays in the radiation layer 43 are arranged in a trend that the distribution density increases with increasing distance from the center. Preferably, the radiating array comprises at least one radiating LED chip 431. For example, when the radiation layer has a circular arc-shaped curved surface, the radiation arrays are arranged in concentric circles around the drainage hole, and the radiation arrays are arranged in a trend that the distribution density gradually increases with the distance from the first hole 433. The advantage that so set up lies in, can avoid the thick waste liquid of surface of a wound to block up into the liquid mouth. Generally, the waste liquid of the wound surface is inclined to be viscous, and when the waste liquid is converged to the liquid inlet, the density is higher, so that the liquid inlet is easily blocked, and the drainage effect is poor. According to the invention, the distribution density of the radiation array of the radiation layer is set in a mode of gradually increasing along with the distance of the drainage port, so that the deformation of the radiation layer based on negative pressure can be adapted and the barrier of the radiation array to waste liquid can be reduced. Preferably, the radiation layer forms a bulge towards the liquid inlet due to the negative pressure, so that the density of the radiation array is increased, and the obstruction of viscous waste liquid is further increased. The invention reduces the density of the radiation array near the drainage port, and can alleviate the defect of blockage of the liquid inlet caused by the deformation of the radiation layer. Preferably, the radiation array in the radiation layer of the present invention is not limited to the distribution shown in fig. 4, but also includes various arrangements according to the density variation trend. Preferably, the radiating arrays or radiating LED chips are connected by a waterproof signal line 432. Preferably, the surfaces of the various parts of the radiating layer are provided with a water-repellent layer to avoid corrosion and damage of the radiating elements. Preferably, there is at least one gap between the radiating arrays, i.e., second aperture 434, that allows fluid to pass through. Preferably, the radiating array in the radiating layer is mounted on a deformable grid structure, and the signal lines are arranged on a support of the grid structure. For example, the grid structure may be as shown in FIG. 4.
Preferably, the radiating array is not limited to the square array shown in fig. 4, but includes various geometric arrays such as a circular array and a rectangular array.
Preferably, as shown in fig. 3 and 5, the surface of the radiation layer 43 facing the wound surface comprises a light scattering layer 44. The light diffusion layer 44 is provided with a plurality of light diffusion holes 442 to diffuse radiation of the radiation LED chip 431 while isolating heat of the radiation layer 43 to diffuse the radiation treatment area. The provision of the light-diffusing layer has the advantage that, firstly, the radiation rays of the radiation LED chip can be distributed uniformly over the wound surface. And secondly, the radiation LED chip can be isolated from being in direct contact with the wound surface, and the thermal damage of the radiation LED chip to the wound surface is reduced.
According to a preferred embodiment, the center of the radiation layer 43 of the first cavity 31 is provided with a first hole 433 which penetrates the inlet of the duct 17. Preferably, the surface of the radiation layer 43 is curved in an arc and protrudes in the direction of the wound bed 34. The liquid inlet of the pipe 17 is at a distance from the radiation layer. The surface of the light diffusion layer 44 is curved in an arc shape and protrudes toward the wound surface 34. The liquid inlet penetrates through the radiation layer and the light diffusion layer, so that the radiation layer and the light diffusion layer can move on the pipeline 17. The deformable diffusion layer is a layer directly contacted with the wound surface, and only the deformable diffusion layer is made of deformable materials, such as a rubber diffusion layer with an arc-shaped curved surface. The center of the light diffusion layer 44 on the surface of the radiation layer 43 facing the wound surface is provided with a second hole 434 communicated with the liquid inlet of the pipeline 17, and the first hole 433 and the second hole 434 are sleeved on the liquid inlet of the pipeline 17 so that the waste liquid of the wound surface 34 is directly gathered at the liquid inlet of the pipeline 17 under the action of negative pressure. The advantage of such an arrangement is that firstly, the light scattering layer is prevented from stabbing or scratching the wound surface, so that the wound is further deteriorated; secondly, through going into liquid mouthful and running through first hole 433 and third hole 441, the surface of a wound liquid can directly get into pipeline 17 under the negative pressure effect, need not pass through radiation layer and astigmatism layer, has reduced the hindrance that the waste liquid got into pipeline 17. Preferably, the control device 60 is connected to the radiating layer 43 by a waterproof wire running through the inside of the duct 17. The radiation layer 43 performs radiation irradiation with the corresponding radiation area, radiation frequency, duty ratio and radiation duration based on the adjustment instruction of the control device 60, so as to realize the personalized radiation therapy of the wound surface.
Preferably, the radiation LED chip is a non-ultraviolet sterilizing electromagnetic radiation chip. The wavelength range is 380 nm-900 nm. Preferably, each wavelength is capable of killing at least one pathogen. For example, wavelengths of 633nm, 808nm, and 830nm can be effective to aid tissue healing.
Preferably, the radiation arrays with different wavelengths are distributed in a staggered mode, and the probability range is 0.005 mW-1W. Preferably, the radiation dose is in the range of 0.1J/cm2～1J/cm2。
Preferably, the control module is configured with corresponding treatment modes based on the distribution of the radiation array for different wavelength parameters. The treatment pattern includes a continuous radiation and an intermittent radiation at certain intervals. Preferably, the treatment pattern further comprises alternating treatment, for example alternating radiation between a first wavelength and a second wavelength, and may also alternate radiation between more wavelengths.
Preferably, the diffusion layer includes one of a transparent diffusion layer, a translucent diffusion layer and a semi-opaque diffusion layer.
Preferably, the control unit has an independent power source, such as a battery or rechargeable battery. Preferably, the battery may be electrically connected to various devices within the control unit. The control device 60 adjusts the magnitude of the negative pressure of the pump 70 based on the rate of change of the pressure in the conduit 17 to adjust the flow rate of the liquid in the conduit 17 to avoid blockages in the conduit 17. Wherein the pump 70 is turned off in case the pressure of the negative pressure increases rapidly and exceeds a preset pressure threshold. The negative pressure of the pump 70 is reduced to slow the flow rate of the liquid in the event that the rate of change of the pressure of the negative pressure exceeds a rate of change threshold. For example, the rate of change threshold may be 10%. Generally, when the liquid in the pipeline is too much, the pressure in the pipeline can be increased, and when the pipeline is blocked, the negative pressure in the pipeline can be increased sharply or even unchanged. Thus, reducing the negative pressure of the pump 70 can mitigate rapid accumulation of viscous waste liquid. Preferably, the control means 60 is able to detect an occlusion of the first inflation body by comparing the pressure of the second tube connected to the pump 70, with the first tube open and the application means closed. Under the condition that the pressure of the second through pipe is higher than the detection pressure threshold value, the first charging body is indicated to be seriously blocked, and the control device can send out warning information to remind a user of replacing the first charging body. When the pressure of the second pipe is low and approaches zero, the first filling body is not blocked, and the fluid can flow smoothly. Settings for the detection pressure threshold the skilled person will make relevant specific settings based on the size of the dressing.
The working principle of the invention is as follows:
medical personnel or user paste the dressing device on the skin around the surface of a wound with fixed dressing, with first siphunculus and second siphunculus respectively with corresponding pipeline interface connection. Opening the point source of the control device.
(1) And (4) removing wound waste liquid. The supplemental assembly is now installed and the medical professional or user activates the pump 70 via the corresponding button of the control device, the pump 70 having a waste fluid storage device, such as a storage bottle or storage chamber. The pump 70 pumps air in the pipe to create a negative pressure. The second chamber on the pipeline 17 is elastically contracted based on the negative pressure effect, and part of air enters the pump 70, so that the initial pressure is buffered, and the waste liquid is prevented from rapidly blocking at the liquid inlet. Along with the contraction of the second cavity, the pressure of the first inflatable body to the wound surface is reduced, the gaps among the radiation layer, the light diffusion layer and the wound surface are increased, and waste liquid in the peripheral area of the wound surface is gathered to the center and enters the waste liquid storage device along with the pipeline.
(2) And (5) cleaning the wound surface. At this time, the interior of the dressing device is in a negative pressure state. The liquid medicine filled with the disinfection or cleaning wound surface is filled into the shell and is connected with the first through pipe, and the switch is turned on. The liquid medicine in the supplementary assembly rapidly enters the first inflatable body based on the action of negative pressure, and then contacts the wound surface and enters the pipeline 17. After observing the presence of the liquid drug in the second tube for a period of time, for example 2 minutes, the pump 70 is turned off by the control means. The connection between the first through pipe and the supplementary assembly is disconnected and the first through pipe is kept open, so that a large amount of air enters the second cavity body through the first through pipe, and the negative pressure disappears. The elasticity of the second cavity is recovered, the volume is increased and expanded, and the first filling body filled with the liquid medicine is extruded. The liquid medicine in the first inflatable body overflows to the wound surface due to extrusion, and the whole area of the wound surface is cleaned or disinfected. The pump 70 is repeatedly started to suck out the residual liquid medicine.
(3) And (4) radiation therapy. The treatment mode is selected through a key of the control device, and the control module starts the parameters of the related radiation array according to the instruction to carry out radiation treatment.
(4) Soaking in the medicinal liquid. The liquid medicine filled with the disinfected or cleaned wound surface is filled into the shell, the first inflation body can be replaced or the original first inflation body can be continuously used, and the first inflation body is connected with the first through pipe and the switch is turned on. Simultaneously, the pump 70 is started. The liquid medicine in the supplementary assembly rapidly enters the first inflatable body based on the action of negative pressure, and then contacts the wound surface and enters the pipeline 17. After observing the presence of the liquid drug in the second tube for a period of time, for example 2 minutes, the pump 70 is turned off by the control means. And the connection between the first through pipe and the supplementary assembly is disconnected and the first through pipe is kept open, so that a large amount of air enters the second cavity through the first through pipe, and the negative pressure disappears. The elasticity of the second cavity is recovered, the volume is increased and expanded, and the first filling body filled with the liquid medicine is extruded. The liquid medicine in the first inflatable body overflows to the wound surface due to extrusion, and the medicine infiltration of the whole area of the wound surface is realized. The user may pressurize the first housing such that more of the medical fluid within the first fill volume is spilled. After reaching the infiltration time, for example 10 minutes, the control unit with the housing is separated from the dressing and the dressing is detached from the wound bed.
(5) And detecting blockage of the first inflatable body. The dressing is arranged on the wound surface simulating device and fixed, so that a closed space is formed in the dressing. The switch of the first tube is open and allows air to enter. The control means monitors the gas pressure of the pump 70 and if the gas pressure approaches the real environment, the first inflatable body is not blocked and does not need to be replaced. If the gas pressure is far greater than the gas pressure of the real environment, the first charging body is blocked and needs to be replaced. Preferably, a micro air pressure sensor connected with the control device is arranged at the inlet of the first through pipe. During the test, the control means compares the air pressure difference between the first tube and the pump 70. If the air pressure difference is larger than 30%, the first inflating body is blocked. If the air pressure difference is less than 30%, the first inflation body is not blocked or is less blocked, and the air pressure difference can be used continuously.
Preferably, the steps of removing the waste liquid from the wound surface, cleaning the wound surface, performing radiation therapy and soaking in the liquid medicine can be arranged in sequence according to needs, and do not have a fixed sequence, or only one of the functions can be used.
It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.
Claims (10)
1. A portable negative pressure drainage device, which at least comprises a first cavity (31) and a pipeline (17) penetrating through the first cavity, is characterized in that,
the liquid inlet of the pipeline (17) is connected and communicated with the drainage hole (38) of the first cavity (31), the pipeline (17) is provided with a second cavity (32) which can be elastically contracted, so that the second cavity (32) is arranged in the first cavity (31), the second cavity (32) is arranged on the pipeline (17) in a mode of surrounding a part of the pipeline (17), wherein the pipeline part in the second cavity (32) is provided with a plurality of through holes communicated with the second cavity (32), the second end of the pipeline (17) is communicated with the drainage hole (38) or the through holes of the second cavity (32) are communicated with the drainage hole (38) when the second cavity (32) is arranged at the position close to the second end of the pipeline (17) or at the second end,
the part of the first cavity (31) contacting with the wound surface (34) is provided with a plurality of through holes, so that the first cavity (31) and the pipeline (17) form a channel through a gap of the wound surface.
2. The negative pressure drainage device according to claim 1, characterized in that a first elastic inflation body (41) is arranged in a space between the first cavity (31) and the pipeline (17), and the first inflation body (41) is connected with a supplementary assembly (50) through a pipeline penetrating through the first cavity, so that the first inflation body (41) forms a channel with the pipeline (17) through a wound surface gap.
3. Negative pressure drainage device according to claim 2, characterized in that the housing of the first cavity (31) in contact with the wound bed (34) has an arc-shaped curvature and is convex outwards to conform to a concave wound bed,
the drainage hole (38) is arranged in the center of the arc-shaped curved surface, so that waste liquid of the wound surface is gathered towards the center under the action of negative pressure.
4. The negative pressure drainage device according to claim 3, characterized in that the elasticity of the first cavity (31) differs from the elasticity coefficient of the second cavity (32), and
the elastic coefficient of the second cavity (32) is greater than that of the first cavity (31), so that
The deformation degree of the second cavity (32) is larger than that of the first cavity (31) under the action of negative pressure, so that the first charging body (41) has an elastically expanded space.
5. The negative pressure drainage device according to one of the preceding claims, characterized in that the contact part of the first cavity (31) and the wound surface (34) is provided with a radiation layer (43) which is not ultraviolet radiation, the radiation layer (43) is provided with a plurality of radiation LED chips (431) which are arranged in a plurality of arrays, and hollow gaps exist among the plurality of radiation LED chips (431) so as to form a radiation net.
6. Negative pressure drainage device according to claim 5, characterized in that the surface of the radiation layer (43) facing the wound surface comprises a light diffusion layer (44),
the light diffusion layer (44) is provided with a plurality of light diffusion holes (442) to diffuse radiation of the radiation LED chip (431) to diffuse a radiation treatment area while isolating heat of the radiation layer (43).
7. The negative pressure drainage device according to claim 5, characterized in that the center of the radiation layer (43) of the first cavity (31) is provided with a first hole (433) which is communicated with the liquid inlet of the pipeline (17),
a second hole (434) which is communicated with the liquid inlet of the pipeline (17) is arranged in the center of the light scattering layer (44) on the surface of the radiation layer (43) facing the wound surface,
the first hole (433) and the second hole (434) are sleeved on the liquid inlet of the pipeline (17) so that waste liquid of the wound surface (34) is directly gathered at the liquid inlet of the pipeline (17) under the action of negative pressure.
8. The negative pressure drainage device according to claim 5, characterized in that the device further comprises a control device (60),
the control device (60) is connected with the radiation layer (43) through a waterproof lead penetrating through a pipeline (17), and the radiation layer (43) performs radiation irradiation according to the corresponding radiation area, radiation frequency, duty ratio and radiation duration based on the adjusting instruction of the control device (60).
9. Negative pressure drainage device according to claim 1, characterized in that it further comprises a supplementary assembly (50), a control device (60) and/or a pump (70), wherein the supplementary assembly (50), the control device (60) and/or the pump (70) connected to the first cavity (31) are arranged in an orderly manner in a common housing.
10. The negative pressure drainage device according to claim 6, characterized in that the surface of the radiation layer (43) is curved in an arc shape and protrudes in the direction of the wound surface (34), the liquid inlet of the pipeline (17) is at a certain distance from the radiation layer,
the surface of the light diffusion layer (44) is an arc-shaped curved surface and protrudes towards the direction of the wound surface (34),
the arc-shaped curved surfaces of the radiation layer (43) and the light diffusion layer (44) are sunken towards the liquid inlet under the action of negative pressure, so that a state that the arc-shaped curved surfaces face the liquid inlet is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302481.7A CN111467586B (en) | 2020-04-16 | 2020-04-16 | Portable negative pressure drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302481.7A CN111467586B (en) | 2020-04-16 | 2020-04-16 | Portable negative pressure drainage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111467586A CN111467586A (en) | 2020-07-31 |
| CN111467586B true CN111467586B (en) | 2022-07-12 |
Family
ID=71753767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010302481.7A Expired - Fee Related CN111467586B (en) | 2020-04-16 | 2020-04-16 | Portable negative pressure drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111467586B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101208114A (en) * | 2005-04-27 | 2008-06-25 | 史密夫及内修公开有限公司 | Wound treating apparatus and method |
| JP2012105841A (en) * | 2010-11-18 | 2012-06-07 | Kurume Univ | Negative pressure wound treatment device |
| ITBO20110296A1 (en) * | 2011-05-24 | 2012-11-25 | Met S R L | NEGATIVE PRESSURE DEVICE FOR THE CURE OF WOUNDS |
| CN104039286A (en) * | 2012-02-11 | 2014-09-10 | 保罗·哈特曼股份公司 | Wound Therapy Device |
| CN105125392A (en) * | 2015-07-02 | 2015-12-09 | 青岛市市立医院 | Respiration assistance thoracic cavity saccule counterpulsation drainage device and respiration assistance drainage method |
| WO2016069890A1 (en) * | 2014-10-29 | 2016-05-06 | Shakam LLC | Negative pressure wound therapy dressing and drainage apparatus and system |
| CN106039546A (en) * | 2016-07-08 | 2016-10-26 | 河南汇博医疗股份有限公司 | Local nutrient supplying and negative pressure combined treatment device |
| CN106237482A (en) * | 2015-06-11 | 2016-12-21 | 罗曼-劳氏股份有限公司 | Perforate balloon catheter |
| CN207708232U (en) * | 2017-04-06 | 2018-08-10 | 武汉维斯第医用科技股份有限公司 | A kind of negative pressure drainage equipment with pre-washing function |
| CN207856002U (en) * | 2017-06-12 | 2018-09-14 | 杨绍东 | A kind of Medical negative pressure drainage and flusher |
| CN209529766U (en) * | 2018-09-07 | 2019-10-25 | 南方医科大学南方医院 | Abdominal drainage apparatus with pre-washing function |
| CN110944607A (en) * | 2017-06-07 | 2020-03-31 | 凯希特许有限公司 | Method of manufacturing and assembling a bi-material tissue interface for negative pressure therapy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008098207A2 (en) * | 2007-02-09 | 2008-08-14 | Twin Star Medical, Inc. | Method and system for the use of hollow fiber catheters in topical applications |
| US10893983B2 (en) * | 2008-12-03 | 2021-01-19 | Abigo Medical Ab | Method for dressing a wound |
| EP3313468B1 (en) * | 2015-06-29 | 2019-01-23 | KCI Licensing, Inc. | Apparatus for irrigation with negative pressure |
| US10716880B2 (en) * | 2018-06-15 | 2020-07-21 | Incuvate, Llc | Systems and methods for aspiration and monitoring |
-
2020
- 2020-04-16 CN CN202010302481.7A patent/CN111467586B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101208114A (en) * | 2005-04-27 | 2008-06-25 | 史密夫及内修公开有限公司 | Wound treating apparatus and method |
| JP2012105841A (en) * | 2010-11-18 | 2012-06-07 | Kurume Univ | Negative pressure wound treatment device |
| ITBO20110296A1 (en) * | 2011-05-24 | 2012-11-25 | Met S R L | NEGATIVE PRESSURE DEVICE FOR THE CURE OF WOUNDS |
| CN104039286A (en) * | 2012-02-11 | 2014-09-10 | 保罗·哈特曼股份公司 | Wound Therapy Device |
| WO2016069890A1 (en) * | 2014-10-29 | 2016-05-06 | Shakam LLC | Negative pressure wound therapy dressing and drainage apparatus and system |
| CN106237482A (en) * | 2015-06-11 | 2016-12-21 | 罗曼-劳氏股份有限公司 | Perforate balloon catheter |
| CN105125392A (en) * | 2015-07-02 | 2015-12-09 | 青岛市市立医院 | Respiration assistance thoracic cavity saccule counterpulsation drainage device and respiration assistance drainage method |
| CN106039546A (en) * | 2016-07-08 | 2016-10-26 | 河南汇博医疗股份有限公司 | Local nutrient supplying and negative pressure combined treatment device |
| CN207708232U (en) * | 2017-04-06 | 2018-08-10 | 武汉维斯第医用科技股份有限公司 | A kind of negative pressure drainage equipment with pre-washing function |
| CN110944607A (en) * | 2017-06-07 | 2020-03-31 | 凯希特许有限公司 | Method of manufacturing and assembling a bi-material tissue interface for negative pressure therapy |
| CN207856002U (en) * | 2017-06-12 | 2018-09-14 | 杨绍东 | A kind of Medical negative pressure drainage and flusher |
| CN209529766U (en) * | 2018-09-07 | 2019-10-25 | 南方医科大学南方医院 | Abdominal drainage apparatus with pre-washing function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111467586A (en) | 2020-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101884584B1 (en) | A cover, a treatment device and a method of use of such a device | |
| US5733319A (en) | Liquid coolant supply system | |
| EP2365834B1 (en) | Breast pump system | |
| JP4611312B2 (en) | Wound purification device using heat | |
| JP4344109B2 (en) | Colostomy pump device | |
| EP3166662B1 (en) | Trans anal irrigation platform with bed module | |
| AU2007206054B2 (en) | System and method for treating a wound using ultrasonic debridement | |
| EP2859903B1 (en) | Apparatus for administering reduced pressure treatment to a tissue site | |
| ES2466352T3 (en) | Reduced pressure pump that has regulated pressure capabilities | |
| US7526344B2 (en) | Medical device for treating prostate diseases by using near-infrared LED | |
| US20070299369A1 (en) | Ultrasound wound care device and method | |
| JP2022540177A (en) | FLUID COLLECTION DEVICE INCLUDING ENLARGED OPENINGS, SYSTEMS AND METHODS OF USE | |
| KR20070122545A (en) | Wound treating apparatus and method | |
| KR20120020103A (en) | An apparatus and method for controlling the negative pressure in a wound | |
| JP2007522903A (en) | Tissue processing equipment | |
| WO2005105175A1 (en) | Wound cleansing apparatus with ultrasound | |
| JP2010516315A (en) | Individually arrangeable pump system | |
| US20080275381A1 (en) | Portable Instillation Apparatus and Method | |
| US6802808B2 (en) | Bowel probe system & method for controlling bowel incontinence | |
| US20230225897A1 (en) | Fecal management systems and methods | |
| CN111467586B (en) | Portable negative pressure drainage device | |
| CN211751345U (en) | Drainage device for operating room nursing | |
| CN109432532B (en) | Pressurized perfusion flushing treatment device | |
| CN210785641U (en) | A drainage device for nursing of severe medical science branch of academic or vocational study | |
| CN210020589U (en) | Enema device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |