CN114712089B - Wound surface dressing for negative-pressure coupling electric field and constant-temperature treatment - Google Patents
Wound surface dressing for negative-pressure coupling electric field and constant-temperature treatment Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/00051—Accessories for dressings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/05—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]
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- A—HUMAN NECESSITIES
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- A61N1/0404—Electrodes for external use
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- A—HUMAN NECESSITIES
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- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
- A61F2013/00902—Plasters containing means
- A61F2013/00919—Plasters containing means for physical therapy, e.g. cold or magnetic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
- A61F2013/00902—Plasters containing means
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Abstract
The invention discloses a negative-pressure coupling electric field and constant-temperature treatment wound dressing, which comprises a dressing layer attached to a wound and a wound edge, a constant-temperature device for heating the dressing layer, a negative-pressure device, an electric field device and a control device, wherein the electric field device applies an electric field between normal skin at the wound edge and the wound, and the control device is in communication connection with the electric field device and acquires a current signal obtained by conducting wound seepage after the electric field device applies the electric field; the negative pressure device applies negative pressure on the wound surface and drains wound surface seepage; the control device is in communication connection with the negative pressure device and the constant temperature device, and controls the opening and closing of the negative pressure device and the heating and cooling of the constant temperature device according to the obtained current signals. The negative-pressure coupling electric field and constant-temperature treatment wound dressing has the advantages of simple structure, reasonable arrangement, promotion of wound healing, avoidance of wound infection and inflammation and the like.
Description
Technical Field
The invention relates to the technical field of dressing structures, in particular to a wound dressing for negative-pressure coupling electric field and constant-temperature treatment.
Background
The temperature is one of important microenvironment influencing wound healing, and researches show that the temperature of a central area of a chronic wound is about 5 ℃ lower than the core temperature of a human body, the healing of the wound is stopped when the temperature of the wound is lower than 33 ℃, and the wound healing effect is best when the temperature of the wound reaches 36-38 ℃. Therefore, constant-temperature dressings are often used in medical applications to treat chronic wounds, but the combination of constant-temperature dressings and wound exudate creates a damp-heat wound microenvironment, promotes the propagation of bacteria, and is easy to cause the problems of infection, inflammation and the like, and when the wound exudate is increased, the temperature on the surface of the wound is often reduced, and the optimal healing temperature cannot be reached. The negative pressure dressing is a common dressing for wound treatment, and has the main functions of pumping tissue fluid generated by the wound and providing a closed environment for the wound to isolate from the outside, so that the infection of foreign bacteria is prevented, and the wound is better and faster healed. The stimulation of the electric field also has the effect of rapid healing of the wound surface. The current product does not have dressing for combining negative pressure, electric field and constant temperature, so that the synergistic relationship among the three does not exist.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the wound dressing for negative-pressure coupling electric field and constant-temperature treatment, which has the advantages of simple structure, reasonable arrangement, promotion of wound healing and avoidance of wound infection and inflammation.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a negative-pressure coupling electric field and constant-temperature treatment wound dressing comprises a dressing layer attached to a wound and a wound edge, a constant-temperature device used for heating the dressing layer, a negative-pressure device, an electric field device and a control device, wherein the electric field device applies an electric field between normal skin at the wound edge and the wound, and the control device is in communication connection with the electric field device and obtains a current signal obtained by conducting wound seepage after the electric field device applies the electric field; the negative pressure device applies negative pressure on the wound surface and drains wound surface seepage; the control device is in communication connection with the negative pressure device and the constant temperature device, and controls the opening and closing of the negative pressure device and the heating and cooling of the constant temperature device according to the obtained current signals.
As a further improvement of the above technical solution:
the control device comprises a judging module, and after receiving the current signal of the electric field device, the control device compares the current signal with a current preset value preset in the control device; when the current is larger than a first current preset value, the judging module sends a temperature-raising instruction to the constant-temperature device, and the constant-temperature device raises the heating output after receiving the temperature-raising instruction; when the current is smaller than a second current preset value, the judging module sends a cooling instruction to the constant temperature device, and the constant temperature device reduces heating output after receiving the cooling instruction; the first current preset value is not less than the second current preset value.
The control device comprises a judging module, and after receiving the current signal of the electric field device, the control device compares the current signal with a current preset value preset in the control device; when the current is larger than a first current preset value, the judging module sends a starting instruction to control the negative pressure device to start; when the current is smaller than a second current preset value, the judging module sends a stopping instruction to control the negative pressure device to be closed; the first current preset value is not less than the second current preset value.
The negative-pressure coupling electric field and constant-temperature treatment wound dressing also comprises a global fixing component, wherein the global fixing component comprises a bowl-shaped shell, the shell is reversely buckled at the skin of the wound to be treated, and the edge of the shell is provided with an attaching layer which extends outwards and is attached to the skin; the dressing layer is arranged at the opening of the shell, the edge of the dressing layer is connected with the inner wall of the shell, and the constant temperature device is accommodated in the shell and positioned on the inner side of the dressing layer.
The global fixing component also comprises an annular accommodating area arranged in the shell, the accommodating area is separated from other areas in the shell by an isolation layer, and the constant temperature device is arranged in the accommodating area; the negative pressure device passes through the avoidance hole in the middle of the annular accommodating area and is communicated with the dressing layer.
A set distance exists between the surface of the isolation layer facing the dressing layer and the dressing layer.
The constant temperature device comprises a power supply, a heating layer and a heat preservation layer, wherein the heating layer is formed by winding an electric heating wire, and the heat preservation layer is at least arranged on one side, close to the wound surface, in the heating layer.
The negative pressure device comprises a negative pressure guide pipe and a negative pressure driving piece, one end of the negative pressure guide pipe is communicated to the dressing layer area, and the other end of the negative pressure guide pipe is connected with the negative pressure driving piece; and the control device is in communication connection with the negative pressure driving piece and controls the opening and closing of the negative pressure driving piece according to the acquired current signal.
The electric field device comprises an anode arranged on normal skin at a wound edge, a cathode arranged at the center of a wound surface and a power supply for supplying power to the anode and the cathode, and the control device acquires a current signal which is generated by how much influence of seepage on the conduction between the anode and the cathode through the electric field device.
The positive electrode and the negative electrode are arranged on one side of the dressing layer facing the wound surface at intervals.
Compared with the prior art, the invention has the advantages that:
the negative pressure coupling electric field and constant temperature treatment wound surface dressing combines the constant temperature device, the negative pressure device and the electric field device together, and the constant temperature device provides proper healing temperature for the wound surface to accelerate the healing of the wound surface. Negative pressure device applys negative pressure and drainage surface of a wound sepage at the surface of a wound, provides suitable environment for the healing of impaired tissue to alleviate the surrounding tissue edema of wounding, the healing process accelerates, and negative pressure device can ensure that the surface of a wound is in comparatively dry environment simultaneously, has destroyed bacterial growing's condition, avoids the harmful effects that constant temperature dressing probably brought in the treatment process, further promotes the surface of a wound healing after combining with constant temperature equipment, ensures effectual treatment. The electric field device applies an electric field between the normal skin of the wound margin and the wound surface, thereby promoting the proliferation of cells related to the repair of the wound margin, enabling the repair cells to migrate to the center of the wound surface, promoting the growth of the nerves of the wound margin to the wound surface and promoting the healing of the wound surface.
The wound surface can generate seepage in the healing process, the seepage can be conducted when an electric field is applied to the wound surface, and when the seepage of the wound surface is large, the impedance is reduced, the current is increased, and when the seepage of the wound surface is small, the impedance is increased, and the current is reduced. Therefore, based on the principle, the electric field device can be used as equipment for detecting the amount of the wound seepage liquid, so that the temperature of the constant temperature device can be adjusted to rise and fall to offset the influence of the seepage liquid on the temperature of the wound surface, the opening and closing of the negative pressure device are adjusted to draw away the redundant seepage liquid, and the bacteria breeding is avoided. The control device is in communication connection with the electric field device, obtains a current signal obtained by conducting wound seepage after the electric field device applies an electric field, and controls the opening and closing of the negative pressure device and the temperature rise and fall of the constant temperature device according to the obtained current signal.
Drawings
Fig. 1 is a schematic structural diagram of a negative-pressure coupling electric field and constant-temperature treatment wound dressing of the present invention.
Illustration of the drawings: 1. a dressing layer; 2. a thermostatic device; 21. a heating layer; 22. a heat-insulating layer; 3. a negative pressure device; 31. a negative pressure conduit; 4. an electric field device; 41. a positive electrode; 42. a negative electrode; 5. a global fixed component; 51. laminating layers; 52. and an isolation layer.
Detailed Description
In order to facilitate understanding of the invention, the invention will be described more fully and in detail with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
Example (b):
as shown in fig. 1, the negative-pressure coupling electric field and constant-temperature treatment wound dressing of the present embodiment includes a dressing layer 1 attached to a wound and a wound edge, a constant-temperature device 2 for heating the dressing layer 1, a negative-pressure device 3, an electric field device 4, and a control device, wherein the electric field device 4 applies an electric field between normal skin at the wound edge and the wound, and the control device is in communication connection with the electric field device 4 and obtains a current signal obtained by conducting wound exudate after the electric field device 4 applies the electric field; the negative pressure device 3 applies negative pressure on the wound surface and drains wound surface seepage; the control device is in communication connection with the negative pressure device 3 and the constant temperature device 2, and controls the opening and closing of the negative pressure device 3 and the temperature rise and fall of the constant temperature device 2 according to the obtained current signals.
The negative pressure coupling electric field and constant temperature treatment wound dressing combines the constant temperature device 2, the negative pressure device 3 and the electric field device 4 together, and the constant temperature device 2 provides proper healing temperature for the wound surface to accelerate the healing of the wound surface. The negative pressure device 3 applies negative pressure to the wound surface and drains wound surface seepage, a proper environment is provided for healing of damaged tissues, tissue edema around the wound surface is relieved, the healing process is accelerated, meanwhile, the negative pressure device 3 can ensure that the wound surface is in a dry environment, the condition of bacterial breeding is destroyed, the adverse effect possibly brought by constant-temperature dressing in the treatment process is avoided, the wound surface healing is further promoted after the negative pressure device is combined with the constant-temperature device 2, and the effective treatment effect is guaranteed. The electric field device 4 applies an electric field between the normal skin of the wound margin and the wound surface, thereby promoting the proliferation of cells related to the repair of the wound margin, enabling the repair cells to migrate to the center of the wound surface, promoting the growth of the nerves of the wound margin to the wound surface and promoting the healing of the wound surface.
The wound surface can generate seepage in the healing process, the seepage can be conducted when an electric field is applied to the wound surface, and when the seepage of the wound surface is large, the impedance is reduced, the current is increased, and when the seepage of the wound surface is small, the impedance is increased, and the current is reduced. Therefore, based on the principle, the electric field device 4 can be used as a device for detecting the amount of the wound seepage liquid, so that the temperature of the constant temperature device 2 can be adjusted to rise and fall to offset the influence of the seepage liquid on the temperature of the wound, the opening and closing of the negative pressure device 3 are adjusted to draw away the redundant seepage liquid, and the bacteria breeding is avoided.
In this embodiment, the control device includes a determination module, and after receiving the current signal of the electric field device 4, the control device compares the current signal with a current preset value preset in the control device. When the seepage is gradually increased, the current of the electric field device 4 is gradually increased, the surface temperature of the wound surface is gradually reduced, when the current is larger than a first current preset value, the judging module sends a temperature-rising instruction to the constant-temperature device 2, and sends a starting instruction to control the negative-pressure device 3 to be started so as to extract redundant seepage, and the constant-temperature device 2 improves heating output after receiving the temperature-rising instruction so as to eliminate the reduction of the temperature of the wound surface caused by the seepage. When the seepage is gradually sucked away by the negative pressure device 3, the current of the electric field device 4 is gradually reduced, the temperature of the surface of the wound surface is gradually increased, and when the current is smaller than a second current preset value, the judgment module sends a cooling instruction to the constant temperature device 2 and sends a stop instruction to control the negative pressure device 3 to be closed, so that the wound surface is prevented from being excessively dry; the thermostatic device 2 reduces heating output after receiving the cooling instruction, and avoids dangers such as wound surface scalding caused by overhigh temperature. In this embodiment, the first current preset value is not less than the second current preset value, and these two values can be manually set and adjusted to be suitable for different patients or different sizes of wounds at different positions.
In this embodiment, the functions of receiving information, comparing and outputting control signals by the control device can be implemented by conventional control devices or circuits in the market, and therefore are not described in detail herein. The control means may be located near or at the distal end of the dressing and be connected by a wired or wireless means.
In this embodiment, the wound treatment device further comprises a global fixing component 5, wherein the global fixing component 5 comprises a bowl-shaped shell, the shell is reversely buckled at the skin of the wound to be treated, and an attaching layer 51 which extends outwards and is attached to the skin is arranged at the edge of the shell; the dressing layer 1 is arranged at the opening of the shell, the edge of the dressing layer is connected with the inner wall of the shell, and the constant temperature device 2 is contained in the shell and is positioned at the inner side of the dressing layer 1, namely, one side far away from the wound surface. The global fixing component 5 not only provides a closed accommodating space for the thermostatic device 2 and the dressing layer 1 to prevent the thermostatic device 2 and the dressing layer from being deformed or polluted by the external environment, but also can prevent the thermostatic device 2 from radiating to the outside to ensure the efficiency of heating output.
In this embodiment, the global fixing component 5 further includes an annular accommodating area disposed in the housing, the accommodating area is separated from other areas in the housing by the isolation layer 52, and the constant temperature device 2 is disposed in the accommodating area, and is separated from other areas, so that a good heat preservation effect is achieved, and the constant temperature device 2 is prevented from being affected by liquid seepage. Meanwhile, the middle part of the annular accommodating area is hollow and can be regarded as an avoidance hole, a through hole corresponding to the hole is arranged on the shell, and the negative pressure device 3 penetrates through the through hole and the avoidance hole and is communicated with the dressing layer 1.
In this embodiment, a set distance exists between the surface of the isolation layer 52 facing the dressing layer 1 and the dressing layer 1, that is, an empty isolation gap exists between the surface of the isolation layer and the dressing layer 1, so as to further avoid the influence of the seepage on the thermostatic device 2.
In this embodiment, the thermostat 2 includes a power supply, a heating layer 21 wound by an electric heating wire, and an insulating layer 22, the heating layer 21 is electrically connected to the power supply, the power supply is supplied to the heating layer 21 by the power supply, and the power supply may be any power supply capable of supplying electric energy, such as a lithium battery or a dry battery. The heat preservation layer 22 is at least arranged on one side of the heating layer 21 close to the wound surface. In this embodiment, the heat preservation layer 22 is arranged on both sides of the heating layer 21, and heat preservation is performed from both sides, so that heat is prevented from being dissipated outwards, and the wound surface of the heating layer 21 is prevented from being scalded.
In this embodiment, the thermostatic device 2 may further include a temperature sensing element, and a detection end of the temperature sensing element is attached to the wound surface, so as to ensure that the acquired temperature information is the temperature information of the wound surface itself, and avoid being interfered by the heating layer 21. The control device also controls the output of the power supply of the thermostatic device 2 according to the temperature information acquired by the temperature sensing part, and after the control device receives the temperature information sent by the temperature sensing part, the judgment module compares the temperature information with a preset temperature preset in the control device; when the temperature is lower than a third preset temperature, the judging module sends a heating instruction to control the power supply to increase the output; and when the temperature is higher than the fourth preset temperature, the judging module sends a cooling instruction to control the power supply to reduce the output. The fourth preset temperature is not lower than the third preset temperature, the two values can be two values between 36 ℃ and 38 ℃, and the setting and the adjustment can also be manually carried out so as to be suitable for different patients or wound surfaces with different sizes and different parts. The electric field device 4 only responds to the seepage, and when the seepage does not reach a set value, the constant temperature device 2 can further perform fine adjustment through the temperature sensing part, so that the constant temperature effect is ensured.
In this embodiment, the negative pressure device 3 includes a negative pressure conduit 31 and a negative pressure driving member, one end of the negative pressure conduit 31 is communicated to the region of the dressing layer 1, and the other end is connected to the negative pressure driving member; and the control device is in communication connection with the negative pressure driving piece and controls the opening and closing of the negative pressure driving piece according to the acquired current signal. The negative pressure driving member only provides negative pressure, so a conventional negative pressure providing device can be selected, in the embodiment, the negative pressure device 3 can further comprise a seepage storage device, the negative pressure conduit 31 provides negative pressure by the negative pressure driving member and is finally communicated to the seepage storage device, and seepage led out through the negative pressure conduit 31 is finally collected and stored by the seepage storage device.
In this embodiment, the electric field device 4 includes an anode 41 disposed on the normal skin of the wound edge, a cathode 42 disposed in the center of the wound surface, and a power supply for supplying power to the anode 41 and the cathode 42, the power supply and the power supply of the thermostatic device 2 are two independent power supplies, and the power supply may be any power supply capable of supplying power, such as a lithium battery, a dry battery, and the like. The control device obtains a current signal between the anode 41 and the cathode 42 of the electric field device 4, the magnitude of the current signal being slightly influenced by the seepage.
In this embodiment, the power supplies of the electric field device 4 and the constant temperature device 2 may be disposed inside the global fixing component 5, or disposed outside the global fixing component 5, and are connected by leads passing through the global fixing component 5, and the lead-out structures may be led out through lead holes and other structures disposed on the global fixing component 5, and both belong to conventional electrical connection structures, which are not described herein again.
In this embodiment, the positive electrode 41 and the negative electrode 42 are disposed at a distance from each other on the side of the dressing layer 1 facing the wound surface. Both can be arranged on a layer made of a material permeable to liquid, which layer is spaced from the dressing layer 1, in order to provide a fixing of position.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. It will be apparent to those skilled in the art that modifications and variations can be made without departing from the spirit of the invention.
Claims (8)
1. The utility model provides a negative pressure coupling electric field and constant temperature treatment wound surface dressing, includes attached dressing layer (1) at the surface of a wound and wound edge, still includes constant temperature equipment (2) that are used for heating dressing layer (1), its characterized in that: the wound healing device is characterized by further comprising a negative pressure device (3), an electric field device (4) and a control device, wherein the electric field device (4) applies an electric field between the wound edge normal skin and the wound surface, and the control device is in communication connection with the electric field device (4) and obtains current signals obtained by conducting wound surface seepage after the electric field device (4) applies the electric field; the negative pressure device (3) applies negative pressure on the wound surface and drains wound surface seepage; the control device is in communication connection with the negative pressure device (3) and the constant temperature device (2), and controls the opening and closing of the negative pressure device (3) and the heating and cooling of the constant temperature device (2) according to the obtained current signals, and the control device further comprises a global fixing component (5), wherein the global fixing component (5) comprises a bowl-shaped shell, the shell is reversely buckled at the skin of the wound to be treated, and an attaching layer (51) which extends outwards and is attached to the skin is arranged at the edge of the shell; the coating layer (1) is arranged at an opening of the shell, the edge of the coating layer is connected with the inner wall of the shell, the constant temperature device (2) is accommodated in the shell and is positioned at the inner side of the coating layer (1), the overall fixing component (5) further comprises an annular accommodating area arranged in the shell, the accommodating area is separated from other areas in the shell by an isolation layer (52), and the constant temperature device (2) is arranged in the accommodating area; the negative pressure device (3) passes through the avoidance hole in the middle of the annular containing area and is communicated with the dressing layer (1).
2. The negative-pressure coupled electric field and constant-temperature treatment wound dressing of claim 1, wherein: the control device comprises a judging module, and after receiving the current signal of the electric field device (4), the control device compares the current signal with a current preset value preset in the control device; when the current is larger than the first current preset value, the judging module sends a temperature-rising instruction to the constant-temperature device (2), and the constant-temperature device (2) raises the heating output after receiving the temperature-rising instruction; when the current is smaller than a second current preset value, the judging module sends a cooling instruction to the constant temperature device (2), and the constant temperature device (2) reduces heating output after receiving the cooling instruction; the first current preset value is not less than the second current preset value.
3. The negative-pressure coupled electric field and constant-temperature treatment wound dressing of claim 1, wherein: the control device comprises a judging module, and after receiving the current signal of the electric field device (4), the control device compares the current signal with a current preset value preset in the control device; when the current is larger than a first current preset value, the judging module sends a starting instruction to control the negative pressure device (3) to start; when the current is smaller than a second current preset value, the judging module sends a stopping instruction to control the negative pressure device (3) to be closed; the first current preset value is not less than the second current preset value.
4. The negative-pressure coupled electric field and constant-temperature therapy wound dressing according to claim 1, characterized in that: a set distance exists between the surface of the isolating layer (52) facing the dressing layer (1) and the dressing layer (1).
5. The negative-pressure coupled electric field and constant-temperature therapy wound dressing according to claim 1, characterized in that: the constant temperature device (2) comprises a power supply, a heating layer (21) and a heat preservation layer (22), wherein the heating layer (21) is formed by winding an electric heating wire, and the heat preservation layer (22) is at least arranged on one side, close to the wound surface, of the heating layer (21).
6. The negative-pressure coupled electric field and constant-temperature treatment wound dressing of claim 1, wherein: the negative pressure device (3) comprises a negative pressure conduit (31) and a negative pressure driving part, one end of the negative pressure conduit (31) is communicated to the region of the dressing layer (1), and the other end of the negative pressure conduit is connected with the negative pressure driving part; and the control device is in communication connection with the negative pressure driving piece and controls the opening and closing of the negative pressure driving piece according to the acquired current signal.
7. The negative-pressure coupled electric field and constant-temperature treatment wound dressing of claim 1, wherein: the electric field device (4) comprises an anode (41) arranged on normal skin of a wound edge, a cathode (42) arranged at the center of the wound surface and a power supply for supplying power to the anode (41) and the cathode (42), and the control device obtains a current signal which is generated between the anode (41) and the cathode (42) and is influenced by seepage to a certain extent by the electric field device (4).
8. The negative-pressure coupled electric field and thermotherapy wound dressing of claim 7, wherein: the positive electrode (41) and the negative electrode (42) are arranged on one side of the dressing layer (1) facing the wound surface at intervals.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443030.4A CN114712089B (en) | 2022-04-25 | 2022-04-25 | Wound surface dressing for negative-pressure coupling electric field and constant-temperature treatment |
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| CN202210443030.4A CN114712089B (en) | 2022-04-25 | 2022-04-25 | Wound surface dressing for negative-pressure coupling electric field and constant-temperature treatment |
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| CN114712089B true CN114712089B (en) | 2023-04-07 |
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| CN203943810U (en) * | 2014-05-30 | 2014-11-19 | 上海亚澳医用保健品有限公司 | A kind of negative pressure drainage dressing that can draining wound transudate |
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| CN114712089A (en) | 2022-07-08 |
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