Portable negative pressure suction therapeutic device

Abstract

Provided is a portable negative pressure suction therapeutic device, comprising: an apparatus housing (1), a micro-vacuum negative pressure suction therapeutic module (2), and a control module (3). A handle (11) is arranged on the top of the apparatus housing (1). The micro-vacuum negative pressure suction therapeutic module (2) comprises a negative pressure generation apparatus (21), a negative pressure mode selection apparatus (22), a water seal bottle (23), a liquid storage bottle (24), and a dressing layer (25). The negative pressure generation apparatus (21), the negative pressure mode selection apparatus (22), the liquid storage bottle (24), and the dressing layer (25) are connected in series, and the water seal bottle (23) and the liquid storage bottle (24) are respectively located on the two sides of the apparatus housing (1). The control module (3) comprises a control board (31) and a pressure sensor (32). The arrangement of the water seal bottle (23) and the liquid storage bottle (24) on the two sides of the apparatus housing (1) facilitates the observation of liquid conditions in the water seal bottle (23) and the liquid storage bottle (24). The connection of the water seal bottle (23) to the negative pressure mode selection apparatus (22) enables precise adjustment of the suction strength of the negative pressure mode selection apparatus (22) using the water seal bottle (23), thus endowing the dressing layer (25) with a stable and precisely controlled low-negative-pressure suction force.

Description

A portable negative pressure suction therapy device Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a portable negative pressure suction therapeutic instrument. Background Art

[0002] With the development of medical technology, negative pressure therapy is currently commonly used in the treatment of large-area scalds, burns and severely infected wounds. Negative pressure is used to create a certain degree of vacuum at the wound, which can not only discharge the exudate produced at the wound, but also promote blood circulation at the wound by vacuum suction.

[0003] Sealing Vacuum Drainage (VSD) has achieved good results in wound treatment. Its principle is to seal the wound with a covering and connect it to a negative pressure source for suction, creating a negative pressure environment for the wound and its treatment system, thereby achieving wound drainage, overall removal of exudate, improvement of local blood circulation, elimination of swelling, and reabsorption of toxins such as inflammatory mediators.

[0004] However, the current negative pressure suction therapy device using negative pressure drainage has difficulty in controlling micro-negative pressure (control range: 100pa≤treatment negative pressure value≤1000pa). During the use of VSD, there is a large vacuum degree (common treatment negative pressure values ​​are ≥5000pa). Long-term large negative pressure treatment of the wound not only causes compressive pain in the patient's wound and poor tolerance; but also large negative pressure suction will cause damage and shedding of new epithelial cells and skin island cells in the proliferative burn wound, and aging of granulation tissue, which is not conducive to wound healing. In addition, most negative pressure suction therapy devices are moved by pulleys, which makes them difficult to carry and move in places with uneven ground. For example, it is inconvenient to carry the device when passing stairs, and it is inconvenient to move the device to earthquake ruins for on-site wound treatment.

[0005] Utility Model Content

[0006] The technical problem to be solved by the utility model is to solve the problems of excessive vacuum suction, low accuracy in adjusting negative pressure suction and inconvenience in carrying and moving the instrument.

[0007] In order to solve the above technical problems, the utility model provides a portable negative pressure suction therapy instrument, including: a device shell, a handle is provided on the top of the device shell; a micro-vacuum negative pressure suction therapy module, the micro-vacuum negative pressure suction therapy module includes a negative pressure generating device, a negative pressure mode selection device, a water seal bottle, a liquid storage bottle and a dressing layer, the micro-vacuum negative pressure suction therapy module is arranged on the device shell, the negative pressure generating device, the negative pressure mode selection device, the liquid storage bottle and the dressing layer are connected in sequence, the water seal bottle and the liquid storage bottle are respectively located on both sides of the device shell, the water seal bottle is connected to the negative pressure mode selection device, and the negative pressure mode selection device is used to select negative pressure modes with different degrees of suction; a control module, the control module includes a control panel and a pressure sensor, the pressure sensor is used to detect the pressure in the negative pressure mode selection device, and when the pressure sensor detects that the pressure reaches the set pressure of the control panel, the control panel controls the negative pressure generating device to stop working.

[0008] Furthermore, the negative pressure mode selection device includes a three-way connector, a first solenoid valve and a second solenoid valve. The pressure sensor and the first solenoid valve are connected to any one port of the three-way connector. The three ports of the three-way connector are respectively connected to the negative pressure generating pipeline, the negative pressure pipeline, and the precise negative pressure pipeline. The negative pressure generating pipeline is connected to the negative pressure generating device, the negative pressure pipeline is connected to the liquid storage bottle, the precise negative pressure pipeline is connected to the water seal bottle, and the second solenoid valve is connected to the water seal bottle. The first solenoid valve and the second solenoid valve are used to control the connection to atmospheric pressure. When the negative pressure mode selection device selects the conventional negative pressure mode, the second solenoid valve is closed; when the negative pressure mode selection device selects the precise negative pressure mode, the second solenoid valve is connected to the atmospheric pressure.

[0009] Furthermore, the water seal bottle includes a bottle body, an air outlet pipe and an air inlet pipe, the bottle body stores sterile saline, one end of the air outlet pipe is located above the water surface, and the other end of the air outlet pipe is connected to the precise negative pressure pipe, one end of the air inlet pipe is located below the horizontal plane, and the other end of the air inlet pipe is connected to the second solenoid valve.

[0010] Furthermore, the negative pressure pipe, the air outlet pipe and the air inlet pipe all pass through the top of the device shell.

[0011] Furthermore, the negative pressure mode selection device further includes a filter and a liquid inflow prevention component, the filter is arranged on the negative pressure pipeline, and the liquid inflow prevention component is arranged on the negative pressure generating pipeline.

[0012] Furthermore, the micro-vacuum negative pressure suction treatment system also includes a drainage pump, one end of which is connected to the liquid inlet prevention component or the liquid storage bottle, and the other end of which is connected to the outside world.

[0013] Furthermore, the water seal bottle and the liquid storage bottle are both made of transparent materials, and the bottle bodies of the water seal bottle and the liquid storage bottle are both provided with scale lines.

[0014] Furthermore, fixing parts are respectively provided on both sides of the device shell, and the water seal bottle and the liquid storage bottle are arranged on the fixing parts. The fixing parts include a limiting ring and a base. The limiting ring is against the side of the water seal bottle and the side of the liquid storage bottle, and the base is against the bottom surface of the water seal bottle and the bottom surface of the liquid storage bottle.

[0015] Furthermore, a muffler is provided at the air outlet of the negative pressure generating device, and the muffler is connected to atmospheric pressure.

[0016] Furthermore, a shoulder strap is provided on the top of the handle.

[0017] Furthermore, two drainage tubes are provided on the dressing layer, and both of the drainage tubes are connected to the liquid inlet tube of the liquid storage bottle.

[0018] Compared with the prior art, the portable negative pressure suction therapy device provided by the present invention has the following advantages: a handle is provided on the top of the device housing, making it convenient for the user to carry the portable negative pressure suction therapy device with one hand for movement; the water seal bottle and the liquid storage bottle are respectively located on both sides of the device housing, making it easy to observe the liquid conditions in the water seal bottle and the liquid storage bottle; the negative pressure mode selection device can select different modes of negative pressure according to the needs of use, with a conventional negative pressure mode and a precise negative pressure mode for selection. By connecting the water seal bottle to the negative pressure mode selection device, the suction force of the negative pressure mode selection device can be precisely adjusted by the water seal bottle. In the precise negative pressure mode, even slight changes in the suction force inside the dressing layer can significantly affect the height of the liquid level in the water seal bottle. Therefore, the height of the liquid level in the water seal bottle can accurately reflect the suction force inside the dressing layer. Therefore, the water level in the water seal bottle can be used to accurately adjust the micro-vacuum to generate the micro-negative pressure, so that the dressing layer has a stable and fine low-negative pressure suction, so that the wound surface is in a more suitable low-suction and stable vacuum environment, avoiding the situation where excessive vacuum during use causes the dressing layer to press on the wound surface and cause pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a perspective view of a portable negative pressure suction therapeutic apparatus provided by the present invention;

[0020] FIG2 is a cross-sectional view of the portable negative pressure suction therapeutic apparatus provided by the present invention;

[0021] FIG3 is an exploded view of a micro-vacuum negative pressure suction treatment module of the portable negative pressure suction treatment apparatus provided by the present invention;

[0022] FIG4 is a perspective view of a liquid storage bottle and a dressing layer of the portable negative pressure suction therapeutic apparatus provided by the present invention.

[0023] Among them, the correspondence between the figure marks and the component names is: 1. Device shell; 11. Handle; 12. Shoulder strap; 13. Fixing part; 131. Limiting ring; 132. Base; 2. Micro-vacuum negative pressure suction treatment module; 21. Negative pressure generating device; 22. Negative pressure mode selection device; 221. Three-way connector; 222. First solenoid valve; 223. Second solenoid valve; 224. Filter; 23. Water seal bottle; 231. Bottle body; 232. Air outlet pipe; 233. Air inlet pipe; 24. Liquid storage bottle; 25. Dressing layer; 26. Muffler; 201. Negative pressure generating pipe; 202. Negative pressure pipe; 203. Precision negative pressure pipe; 3. Control module; 31. Control panel; 32. Pressure sensor; 33. Touch display screen. DETAILED DESCRIPTION

[0024] The following is a further detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present invention but are not intended to limit the scope of the present invention. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, and numerical values ​​described in these examples do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0026] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0027] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0028] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] As shown in Figures 1 to 4, an embodiment of the present invention discloses a portable negative pressure suction therapy instrument, including: a device shell 1, a handle 11 is provided on the top of the device shell 1; a micro-vacuum negative pressure suction therapy module 2, the micro-vacuum negative pressure suction therapy module 2 includes a negative pressure generating device 21, a negative pressure mode selection device 22, a water seal bottle 23, a liquid storage bottle 24 and a dressing layer 25, the micro-vacuum negative pressure suction therapy module 2 is arranged on the device shell 1, the negative pressure generating device 21, the negative pressure mode selection device 22, the liquid storage bottle 24 and the dressing layer 25 are connected in sequence, the water seal bottle 23 and the liquid storage bottle 24 are respectively located on both sides of the device shell 1, the water seal bottle 23 is connected to the negative pressure mode selection device 22, the negative pressure mode selection device 22 is used to select negative pressure modes with different degrees of suction; a control module 3, the control module 3 includes a control board 31 and a pressure sensor 32, the pressure sensor 32 is used to detect the pressure in the negative pressure mode selection device 22, when the pressure sensor 32 detects that the pressure reaches the set pressure of the control board 31, the control board 31 controls the negative pressure generating device 21 to stop working.

[0030] The portable negative pressure suction therapy device of the present application is provided with a handle 11 on the top of the device housing 1, making it easy for the user to carry the portable negative pressure suction therapy device with one hand. When the portable negative pressure suction therapy device is too heavy to be carried with one hand, a shoulder strap 12 provided on the top of the handle 11 is used for carrying and moving. Compared with the method of pushing the wheel to move the device, these carrying and moving methods have the advantage of greater flexibility and are convenient for carrying and moving in places with uneven surfaces, meeting the needs of carrying the device on stairs, field emergencies, and ruin rescue.

[0031] The negative pressure suction force generated by the negative pressure generating device 21 is transmitted to the micro-vacuum negative pressure suction treatment module 22. Since the pipeline of the negative pressure mode selection device 22 is connected to the top of the liquid storage bottle 24, the negative pressure suction force is transmitted to the top of the liquid storage bottle 24. The top of the liquid storage bottle 24 is provided with a pipeline connected to the dressing layer 25, so that the wound surface to which the dressing layer 25 is attached can be placed in a vacuum environment, and the suction effect of the negative pressure generating device 21 can be used to absorb the exudate at the wound surface into the liquid storage bottle 24, so that the exudate at the wound surface can be treated in time.

[0032] The negative pressure mode selection device 22 can select different modes of negative pressure according to the use requirements, and has a conventional negative pressure mode and a precise negative pressure mode to choose from. By connecting the water seal bottle 23 to the negative pressure mode selection device 22, the second solenoid valve is opened to connect to the atmospheric pressure. Since the slightest change in the suction force inside the dressing layer 25 can significantly affect the liquid level in the water seal bottle 23, the liquid level in the water seal bottle 23 can accurately reflect the suction force inside the dressing layer. The suction force inside the dressing layer 25 can also be clearly known by visually or detecting the water level of the water seal bottle 23 located outside the device housing. If the water level of the water seal bottle 23 exceeds the set range, the first solenoid valve 222 is opened to allow external gas to enter the negative pressure pipe 202, appropriately reducing the suction force inside the dressing layer 25 and relieving the internal pressure of the wound. On the other hand, the second solenoid valve is opened to connect to the atmospheric pressure. When the negative pressure in the negative pressure pipe 202 is too large, due to the influence of the external atmospheric pressure, the external gas enters the negative pressure pipe 202 from the air inlet pipe of the water seal bottle 23, which is equivalent to automatically adding an appropriate amount of gas to the negative pressure pipe 202, so that the negative pressure pipe 202 maintains a suitable negative pressure size, avoiding excessive suction inside the dressing layer 25.

[0033] Therefore, the water seal bottle 23 can be used to precisely adjust the suction force of the negative pressure mode selection device 22. In the precise negative pressure mode, the water seal bottle 23 is used to precisely adjust the micro-vacuum to generate the micro-negative pressure, overcoming the problem of low negative pressure accuracy caused by adjusting the operation of the negative pressure generating device 21 through the pressure sensor 32. The dressing layer 25 has a stable and precise low-negative pressure suction force, which puts the wound surface in a more suitable low-suction and stable vacuum environment, and avoids the situation in which excessive vacuum during use causes the dressing layer 25 to press on the wound surface and cause pain.

[0034] The water seal bottle 23 and the liquid storage bottle 24 are respectively located on both sides of the device housing 1, so that it is easy to observe the liquid conditions in the water seal bottle 23 and the liquid storage bottle 24. By observing the scale of the bottle body 231 corresponding to the liquid level in the water seal bottle 23, the size of the micro-vacuum suction can be known, which is convenient for accurately controlling the suction size at the dressing layer 25; by observing the liquid level in the liquid storage bottle 24, it is convenient to know whether the liquid storage bottle 24 needs to be removed and the waste liquid therein needs to be cleaned. On the other hand, by locating the water seal bottle 23 and the liquid storage bottle 24 on both sides of the device housing 1, it is convenient to remove and replace the water seal bottle 23 when the water seal bottle 23 is blocked; and it is convenient to remove and replace the liquid storage bottle 24 when the liquid storage bottle 24 is blocked or full of waste liquid.

[0035] The control panel 31 controls the micro-vacuum suction force of the negative pressure mode selection device 22 through the pressure sensor 32. By allowing the pressure sensor 32 to detect the pressure of various modes in the negative pressure mode selection device 22, when the pressure sensor 32 detects that the pressure of the selected mode reaches the pressure set by the control panel 31, the control panel 31 controls the negative pressure generating device 21 to stop working, thereby avoiding the occurrence of excessive suction of the drainage dressing layer 25.

[0036] Liquid storage bottle 24 is used to collect and store wound exudate. Dressing layer 25 adheres to the wound surface and absorbs waste fluid from the wound. Simultaneously, dressing layer 25 replaces the important functions of damaged skin and continues to function until the wound and skin lesions heal, providing comprehensive wound protection and creating a microenvironment that promotes wound healing. Furthermore, a medical film is applied to dressing layer 25 to closely adhere to the skin, creating a sealed seal.

[0037] Using closed negative pressure therapy technology and a micro-vacuum negative pressure aspiration therapy module 2, the wound surface negative pressure load (vacuum level) can be controlled 24 hours a day by regulating the amount of liquid in the water seal bottle 23 of the micro-vacuum negative pressure aspiration therapy module 2 and controlling the water level in the water seal bottle 23 during wound treatment, thereby maintaining the wound surface in a constant micro-vacuum state appropriate for clinical needs. This can promote the absorption of local exudates, dilate blood vessels, accelerate blood flow, significantly enhance blood circulation, clear emboli in the lesion area without damaging the wound surface, and enhance the blood oxygen supply and metabolism necessary for wound repair, thereby producing significant therapeutic effects.

[0038] It should be noted that the control board 31 in the embodiment of the present invention may be a printed circuit board, or a single chip microcomputer with a simple program.

[0039] It should be noted that the negative pressure generating device 21 in the embodiment of the present invention is a vacuum pump, and the vacuum pump can generate negative pressure by means of a mechanical pump, a turbine pump or a compressor.

[0040] As shown in Figures 2 and 3, in an optional embodiment of the utility model, the negative pressure mode selection device 22 includes a three-way connector 221, a first solenoid valve 222 and a second solenoid valve 223. The pressure sensor 32 and the first solenoid valve 222 are connected to any one port of the three-way connector 221. The three ports of the three-way connector 221 are respectively connected to the negative pressure generating pipeline 201, the negative pressure pipeline 202, and the precise negative pressure pipeline 203202. The negative pressure generating pipeline 201 is connected to the negative pressure generating device 21, the negative pressure pipeline 202 is connected to the liquid storage bottle 24, the precise negative pressure pipeline 203202 is connected to the water seal bottle 23, and the second solenoid valve 223 is connected to the water seal bottle 23. The first solenoid valve 222 and the second solenoid valve 223 are used to control the connection to atmospheric pressure. When the negative pressure mode selection device 22 selects the conventional negative pressure mode, the second solenoid valve 223 is closed; when the negative pressure mode selection device 22 selects the precise negative pressure mode, the second solenoid valve 223 is connected to the atmospheric pressure.

[0041] By providing the second solenoid valve 223 on the air inlet pipe 233 of the water seal bottle 23 , the control panel 31 can select the precise negative pressure mode or the normal negative pressure mode by controlling the opening and closing of the second solenoid valve 223 .

[0042] When the conventional negative pressure mode is selected, the control panel 31 controls the second solenoid valve 223 to close, and the negative pressure generating device 21, the liquid inlet prevention component, the negative pressure pipe 202 and the liquid storage bottle 24 are connected in sequence, so that the vacuum suction force generated by the negative pressure generating device 21 directly acts on the liquid storage bottle 24, and the drainage dressing layer 2524 has conventional negative pressure suction force.

[0043] When the precise negative pressure mode is selected to activate the micro-vacuum of the water seal bottle 23, the control panel 31 controls the second solenoid valve 223 to open, thereby connecting the air inlet pipe 233 of the water seal bottle 23 to atmospheric pressure. By adding an appropriate amount of gas to the negative pressure system through the air inlet pipe 233 of the water seal bottle 23 to balance the air pressure, the liquid level in the air inlet pipe 233 is lowered, thereby accurately adjusting the micro-negative pressure in the negative pressure system. The negative pressure generating device 21 closes when the set micro-negative pressure is generated. By transmitting the set micro-negative pressure through the precise negative pressure pipe 203202, a micro-vacuum is generated inside the water seal bottle 23221, thereby accurately adjusting the micro-negative pressure using the water level of the water seal bottle 23, and then using the pressure generated by the liquid height in the water seal bottle 23 to accurately maintain the low air pressure value at the negative pressure pipe 202. The micro-vacuum of the water seal bottle 23 generates a stable micro-negative suction force, thereby providing the dressing layer 25 with a stable low-pressure vacuum suction force, avoiding excessive vacuum pressure during use that may cause pain on the wound surface. The water seal bottle 23 can store water at a maximum height of 500 mm, and can finely adjust the negative pressure to less than -5 kPa. The higher bottle body makes it easier to adjust the micro-vacuum suction of the water seal bottle 23.

[0044] Specifically, when the touch screen of the control module 3 selects the conventional negative pressure mode (greater than -5 kPa), the second solenoid valve 223 closes, isolating the water seal bottle 23 from atmospheric pressure, and the negative pressure generating device 21 continues to operate. When the touch screen selects the precise negative pressure mode (less than or equal to -5 kPa), the control panel 31 controls the second solenoid valve 223 to open, connecting the water seal bottle 23 to atmospheric pressure, and the negative pressure generating device 21 operates, creating a slight vacuum in the liquid inside the water seal bottle 23. When the pressure sensor 32 detects that the set pressure has been reached, the negative pressure generating device 21 stops operating, and the water seal bottle 23 finely adjusts the negative pressure.

[0045] When the portable negative pressure suction therapy device stops working, the first solenoid valve 222223 is connected to the atmospheric pressure, so that the pipeline air pressure returns to normal pressure, which facilitates the negative pressure mode selection device 22 to return to its natural state, is beneficial to pipeline maintenance, and ensures the long-term normal use of the micro-vacuum negative pressure suction therapy system.

[0046] As shown in Figures 1 and 2, in an optional embodiment of the utility model, the water seal bottle 23 includes a bottle body 231, an air outlet pipe 232 and an air inlet pipe 233. Sterile physiological saline is stored in the bottle body 231, one end of the air outlet pipe 232 is located above the water surface, and the other end of the air outlet pipe 232 is connected to the precise negative pressure pipe 203202. One end of the air inlet pipe 233 is located below the horizontal plane, and the other end of the air inlet pipe 233 is connected to the second solenoid valve 223. By storing a certain height of sterile physiological saline inside the bottle body 231, a clean and sanitary negative pressure source is provided for the negative pressure pipe 202, thereby reducing the occurrence of contamination of the patient's wound. The water level height in the air inlet pipe 233 is used to accurately control the negative pressure (vacuum degree) of the wound sealing treatment system connected to the other end of the air outlet pipe 232.

[0047] As shown in Figures 1 and 3, in an optional embodiment of the utility model, the negative pressure pipe 202, the air outlet pipe 232, and the air inlet pipe 233 all pass through the top of the device housing 1. By having the negative pressure pipe 202, the air outlet pipe 232, and the air inlet pipe 233 all pass through the top of the device housing 1, placement space is saved. If these pipes pass through the side of the device housing 1 and connect to corresponding devices, the pipes arranged in this way will extend horizontally, easily colliding with and hooking other items, and also making the portable negative pressure suction therapy device occupy a large space. If these pipes pass through the bottom of the device housing 1 and connect to corresponding devices, the bottom of the portable negative pressure suction therapy device will be uneven, making it difficult to place it upright, and placing it horizontally will take up a large space.

[0048] As shown in Figures 2 and 3, in an optional embodiment of the utility model, the negative pressure mode selection device 22 further includes a filter 224 and a liquid inflow prevention member. The filter 224 is disposed on the negative pressure pipe 202, and the liquid inflow prevention member is disposed on the negative pressure generating pipe 201. When liquid enters the liquid inflow prevention member through the pipe, the negative pressure generating device 21 stops operating, preventing the liquid in the pipe from complying with the suction force and entering the negative pressure generating device 21, thereby affecting the normal operation of the negative pressure generating device 21. By arranging the filter 224 on the negative pressure pipe 202, wound exudate collected by the liquid storage bottle 24 is prevented from flowing into the negative pressure pipe 202, thus preventing pipe blockage and the inability to transmit negative pressure.

[0049] As shown in Figures 1 and 2, in an optional embodiment of the utility model, the micro-vacuum negative pressure aspiration treatment system further includes a drainage pump, one end of which is connected to the liquid inlet prevention member or liquid storage bottle 24, and the other end of which is connected to the outside world. When liquid enters the liquid inlet prevention member through the pipeline, the negative pressure generating device 21 stops operating. After clicking the drainage button on the touch screen of the control module 3, the drainage pump starts operating, draining the liquid in the pipeline to the outside world, and the negative pressure generating device 21 resumes operation, preventing the liquid in the pipeline from complying with the suction force and entering the negative pressure generating device 21, thereby affecting its normal operation.

[0050] As shown in Figure 1, in an optional embodiment of the utility model, the water seal bottle 23 and the liquid storage bottle 24 are both made of transparent materials, and the bodies of the water seal bottle 23 and the liquid storage bottle 24 are both provided with scale lines. By using transparent materials to make the water seal bottle 23 and the liquid storage bottle 24, it is convenient to observe the liquid conditions in the water seal bottle 23 and the liquid storage bottle 24. The bodies of the water seal bottle 23 and the liquid storage bottle 24 are both provided with scale lines, which can be used to observe the liquid conditions in a more specific and detailed manner. By observing the scale value of the bottle body 231 corresponding to the liquid level in the water seal bottle 23, the size of the micro-vacuum suction can be known, which is convenient for accurately controlling the size of the suction at the dressing layer 25; observing the scale of the liquid level in the liquid storage bottle 24 can conveniently know how far away the bottle is from being full, and use it to know when to replace the liquid storage bottle 24.

[0051] As shown in Figures 1 and 2, in an optional embodiment of the utility model, fixing members 13 are respectively provided on both sides of the device housing 1, and the water seal bottle 23 and the liquid storage bottle 24 are provided on the fixing members 13. The fixing member 13 includes a limiting ring 131 and a base 132. The limiting ring 131 is against the side of the water seal bottle 23 and the side of the liquid storage bottle 24, and the base 132 is against the bottom surface of the water seal bottle 23 and the bottom surface of the liquid storage bottle 24. By providing fixing members 13 on both sides of the device housing 1, the water seal bottle 23 and the liquid storage bottle 24 are fixed at both sides of the housing. By using the limiting ring 131 and the base 132 for fixing, the water seal bottle 23 and the liquid storage bottle 24 are fixed to a certain extent and are also convenient for removal.

[0052] As shown in Figures 2 and 3, in an optional embodiment of the utility model, a muffler 26 is provided at the outlet of the negative pressure generating device 21, which is connected to atmospheric pressure. The provision of muffler 26 at the outlet of the negative pressure generating device 21 reduces the noise of the high-speed gas generated by the negative pressure generating device 21, thereby facilitating patient recovery and treatment.

[0053] As shown in FIG1 , in an optional embodiment of the utility model, a shoulder strap 12 is provided on the top of the handle 11. The shoulder strap 12 is provided on the top of the handle 11, so that when the portable negative pressure suction therapy device is too heavy to be carried with one hand, the shoulder strap 12 is used to carry the device.

[0054] As shown in FIG1 , in an optional embodiment of the utility model, the control module 3 further includes a touch screen display 33, which is disposed on the side of the device housing 1. By disposing the touch screen display 33 on the side of the device housing 1, the user can conveniently operate the device, easily selecting the negative pressure mode and adjusting the micro-vacuum suction force.

[0055] As shown in Figures 1 and 4, two drainage tubes are provided on the dressing layer 25, and both drainage tubes are connected to the liquid inlet tube of the liquid storage bottle 24. By providing two drainage tubes on the dressing layer 25, the drainage path is increased and the occurrence of damaged tissue blocking the dressing layer 25 is reduced.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A portable negative pressure suction therapeutic device, characterized in that: include: A device housing, wherein a handle is provided on the top of the device housing; A micro-vacuum negative pressure aspiration therapy module, comprising a negative pressure generating device, a negative pressure mode selecting device, a water seal bottle, a liquid storage bottle, and a dressing layer. The micro-vacuum negative pressure aspiration therapy module is disposed on the device housing, wherein the negative pressure generating device, the negative pressure mode selecting device, the liquid storage bottle, and the dressing layer are sequentially connected. The water seal bottle and the liquid storage bottle are respectively located on both sides of the device housing. The water seal bottle is connected to the negative pressure mode selecting device, which is used to select negative pressure modes with different degrees of suction. A control module includes a control panel and a pressure sensor. The pressure sensor is used to detect the pressure in the negative pressure mode selection device. When the pressure sensor detects that the pressure reaches the set pressure of the control panel, the control panel controls the negative pressure generating device to stop working.

2. The portable negative pressure suction therapeutic device according to claim 1, characterized in that: The negative pressure mode selection device includes a three-way connector, a first solenoid valve and a second solenoid valve. The pressure sensor and the first solenoid valve are connected to any one port of the three-way connector. The three ports of the three-way connector are respectively connected to the negative pressure generating pipeline, the negative pressure pipeline, and the precise negative pressure pipeline. The negative pressure generating pipeline is connected to the negative pressure generating device, the negative pressure pipeline is connected to the liquid storage bottle, the precise negative pressure pipeline is connected to the water seal bottle, and the second solenoid valve is connected to the water seal bottle. The first solenoid valve and the second solenoid valve are used to control the connection to atmospheric pressure. When the negative pressure mode selection device selects the conventional negative pressure mode, the second solenoid valve is closed; when the negative pressure mode selection device selects the precise negative pressure mode, the second solenoid valve is connected to the atmospheric pressure.

3. The portable negative pressure suction therapeutic device according to claim 2, characterized in that: The water seal bottle includes a bottle body, an air outlet pipe and an air inlet pipe. Sterile saline is stored in the bottle body. One end of the air outlet pipe is located above the water surface, and the other end of the air outlet pipe is connected to the precise negative pressure pipe. One end of the air inlet pipe is located below the horizontal plane, and the other end of the air inlet pipe is connected to the second solenoid valve.

4. The portable negative pressure suction therapeutic device according to claim 3, characterized in that: The negative pressure pipe, the air outlet pipe and the air inlet pipe all pass through the top of the device shell.

5. The portable negative pressure suction therapeutic device according to claim 2, characterized in that: The negative pressure mode selection device further includes a filter and a liquid inlet prevention component. The filter is arranged on the negative pressure pipeline, and the liquid inlet prevention component is arranged on the negative pressure generating pipeline.

6. The portable negative pressure suction therapeutic device according to claim 5, characterized in that: The micro-vacuum negative pressure suction treatment system also includes a drainage pump, one end of which is connected to the liquid inlet prevention component or the liquid storage bottle, and the other end of which is connected to the outside world.

7. The portable negative pressure suction therapeutic device according to claim 1, characterized in that: The water seal bottle and the liquid storage bottle are both made of transparent materials, and the bottle bodies of the water seal bottle and the liquid storage bottle are both provided with scale lines.

8. The portable negative pressure suction therapeutic device according to claim 7, characterized in that: Fixing parts are respectively provided on both sides of the device shell, and the water seal bottle and the liquid storage bottle are arranged on the fixing parts. The fixing parts include a limiting ring and a base. The limiting ring is against the side surface of the water seal bottle and the side surface of the liquid storage bottle, and the base is against the bottom surface of the water seal bottle and the bottom surface of the liquid storage bottle.

9. The portable negative pressure suction therapeutic device according to claim 1, characterized in that: The outlet end of the negative pressure generating device is provided with a muffler, and the muffler is connected to the atmospheric pressure; And / or a shoulder strap is provided on the top of the handle.

10. The portable negative pressure suction therapeutic device according to claim 1, characterized in that: Two drainage tubes are provided on the dressing layer, and both of the drainage tubes are connected to the liquid inlet tube of the liquid storage bottle.

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