Portable negative pressure suction therapeutic apparatus

Abstract

The utility model relates to the technical field of medical equipment, and discloses a portable negative-pressure suction therapeutic apparatus, which comprises a device shell, a negative-pressure suction tube, a negative-pressure suction tube, a negative-pressure suction tube and a negative-pressure suction tube, the micro vacuum negative pressure suction treatment module comprises a negative pressure generation device, a negative pressure mode selection device, a water seal bottle, a liquid storage bottle and a dressing layer, and the negative pressure generation 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 located on the two sides of the device shell respectively. And the control module comprises a control panel and a pressure sensor. The water seal bottle and the liquid storage bottle are arranged on the two sides of the device shell respectively, so that the conditions of liquid in the water seal bottle and the liquid storage bottle can be observed conveniently, the water seal bottle is connected with the negative pressure mode selection device, and therefore the suction force of the negative pressure mode selection device can be accurately adjusted through the water seal bottle. And the dressing layer has stable and fine low-negative-pressure suction force.

Description

Technical Field

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

[0002] With the development of medical technology, at present, in the treatment of large-area burns, scalds and severe infection wounds, a negative pressure treatment method is usually adopted. By generating a certain degree of vacuum at the wound surface through the negative pressure, not only can the exudates generated at the wound surface be discharged, but also the blood circulation at the wound surface can be promoted by the vacuum suction effect.

[0003] The Sealing Vacuum Drainage (VSD) technology has achieved good curative effects in wound treatment. Its principle is that the wound surface is sealed by a covering material and connected to a negative pressure source for suction, forming a negative pressure environment for the wound surface and its treatment system, so as to achieve treatment effects such as wound surface drainage, overall removal of exudates, improvement of local blood circulation, elimination of swelling and reabsorption of toxins such as inflammatory mediators.

[0004] However, at present, it is difficult for the negative pressure suction therapeutic apparatus using negative pressure drainage to control the micro-negative pressure (regulation range: 100 Pa ≤ treatment negative pressure value ≤ 1000 Pa). During the use of VSD, there is an excessive vacuum degree (the commonly used treatment negative pressure values are all ≥ 5000 Pa). Long-term large negative pressure treatment of the wound surface not only causes compressive pain and poor tolerance of the patient's wound surface, but also the large negative pressure suction will cause damage, shedding of newly generated epithelial cells and skin island cells in the proliferative burn wound surface, and aging of granulation tissue, which is not conducive to wound healing. Moreover, most of the negative pressure suction therapeutic apparatuses use a pulley-pushing method for movement, and it is difficult to carry and move in places with uneven ground. For example, it is inconvenient to carry the instrument when passing through stairs and to move the instrument to the earthquake ruins for on-site wound treatment. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to solve the problems of excessive vacuum suction, low precision of negative pressure suction adjustment and inconvenient carrying and movement of the instrument.

[0006] To solve the above technical problems, the present utility model provides a portable negative pressure suction therapeutic apparatus, comprising: a device housing, with a handle provided at the top of the device housing; a micro vacuum negative pressure suction treatment module, which 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 treatment module is arranged on the device housing, and 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 housing. 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, which includes a control board and a pressure sensor. The pressure sensor is used to detect the pressure in the negative pressure mode selection device. When the pressure detected by the pressure sensor reaches the pressure set by the control board, the control board controls the negative pressure generating device to stop working.

[0007] Furthermore, the negative pressure mode selection device includes a three-way joint, a first electromagnetic valve and a second electromagnetic valve. The pressure sensor, the first electromagnetic valve are connected to any one port of the three-way joint. The three ports of the three-way joint are respectively connected to a negative pressure generating pipeline, a negative pressure pipeline and a 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 electromagnetic valve is connected to the water seal bottle. The first electromagnetic valve and the second electromagnetic valve are used to control the connection to the atmospheric pressure. When the negative pressure mode selection device selects the conventional negative pressure mode, the second electromagnetic valve is closed; when the negative pressure mode selection device selects the precise negative pressure mode, the second electromagnetic valve connects to the atmospheric pressure.

[0008] Furthermore, the water seal bottle includes a bottle body, an air outlet pipe and an air inlet pipe. The bottle body stores sterile physiological saline. One end of the air outlet pipe is above the water surface, and the other end of the air outlet pipe is connected to the precise negative pressure pipeline. One end of the air inlet pipe is below the water level, and the other end of the air inlet pipe is connected to the second electromagnetic valve.

[0009] Furthermore, the negative pressure pipeline, the air outlet pipe and the air inlet pipe all pass through the top of the device housing.

[0010] Furthermore, the negative pressure mode selection device further includes a filter and a liquid prevention part. The filter is arranged on the negative pressure pipeline, and the liquid prevention part is arranged on the negative pressure generating pipeline.

[0011] Furthermore, the micro vacuum negative pressure suction treatment system further includes a liquid discharge pump. One end of the liquid discharge pump is connected to the liquid prevention part or the liquid storage bottle, and the other end of the liquid discharge pump is connected to the outside.

[0012] Further, the water seal bottle includes a bottle body, a dust-proof hole plug, an air outlet pipe and an air inlet pipe. Sterile normal saline is stored in the bottle body. One end of the air outlet pipe is above the water surface, and the other end of the air outlet pipe is connected to the negative pressure mode selection device. The first port of the air inlet pipe is below the water level, and the second port of the air inlet pipe is connected to the atmosphere. The dust-proof hole plug is arranged on the second port of the air inlet pipe.

[0013] Further, the radius range of the second port of the air inlet pipe is 0.2 - 0.4 millimeters.

[0014] Further, a silencer is provided at the air outlet end of the negative pressure generating device, and the silencer is communicated with the atmospheric pressure.

[0015] Further, a shoulder strap is provided at the top of the handle.

[0016] Further, the liquid storage bottle includes a liquid storage bottle body, a liquid storage bottle cap and a floating plug. The liquid storage bottle cap is communicated with the negative pressure pipeline and the interface of the dressing layer. The liquid storage bottle cap is arranged on the liquid storage bottle body. The liquid storage bottle body is provided with a liquid cavity and a plug cavity. The plug cavity is communicated with the liquid cavity and the negative pressure pipeline. The floating plug is arranged in the plug cavity, and the floating plug is used to block the negative pressure pipeline.

[0017] Compared with the prior art, the portable negative pressure suction therapeutic apparatus provided by the embodiment of the present utility model has the beneficial effects that: by providing a handle at the top of the device housing, it is convenient for the user to carry the portable negative pressure suction therapeutic apparatus with one hand for movement. The water seal bottle and the liquid storage bottle are respectively located on both sides of the device housing, so as to facilitate observing the liquid conditions in the water seal bottle and the liquid storage bottle. The negative pressure mode selection device can select negative pressures of different modes according to the use requirements, and has 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 accurately adjusted by the water seal bottle. In the precise negative pressure mode, slight changes in the suction force inside the dressing layer can significantly affect the liquid level height in the water seal bottle. Therefore, the liquid level height in the water seal bottle can accurately reflect the suction force inside the dressing layer. Therefore, the micro vacuum can be accurately adjusted by the water seal bottle water level height to generate a micro negative pressure, so that the dressing layer has a stable and fine low negative pressure suction force, and the wound surface is in a relatively suitable low suction force and stable vacuum environment, avoiding the situation that the vacuum degree is too large during use, resulting in pain caused by the dressing layer pressing on the wound surface. Description of the Drawings

[0018] Figure 1 is the first three-dimensional view of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model;

[0019] Figure 2It is a cross-sectional view of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model;

[0020] Figure 3 It is an exploded view of the micro-vacuum negative pressure suction treatment module of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model;

[0021] Figure 4 It is a three-dimensional view of the liquid storage bottle and the dressing layer of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model;

[0022] Figure 5 It is a second three-dimensional view of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model;

[0023] Figure 6 It is a structural schematic diagram of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model;

[0024] Figure 7 It is a schematic diagram of the water seal bottle of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model

[0025] Figure 8 It is a schematic diagram of the liquid storage bottle of the portable negative pressure suction therapeutic apparatus in the embodiment of the present utility model.

[0026] Among them, the corresponding relationship between the reference numerals and the component names is as follows:

[0027] 1. Device housing; 11. Handle; 12. Shoulder strap;

[0028] 2. Micro-vacuum negative pressure suction treatment module; 21. Negative pressure generating device; 22. Negative pressure mode selection device; 221. Three-way joint; 222. First electromagnetic valve; 223. Filter; 23. Water seal bottle; 231. Bottle body; 232. Exhaust pipe; 233. Intake pipe; 234. Bottle cap; 235. Dust-proof hole plug; 24. Liquid storage bottle; 241. Liquid storage bottle body; 242. Liquid storage bottle cap; 243. Floating plug; 244. Rubber air valve; 25. Dressing layer; 26. Silencer; 201. Negative pressure generating pipeline; 202. Negative pressure pipeline; 203. Precision negative pressure pipeline; 204. First port of the intake pipe; 205. Second port of the intake pipe, 206. Liquid cavity; 207. Plug cavity;

[0029] 3. Control module; 31. Control board; 32. Pressure sensor; 33. Touch display screen. Detailed implementation manners

[0030] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but not to limit the scope of the present utility model. It should be noted that: unless otherwise specifically stated, the relative arrangements and numerical values of the components and steps described in these embodiments do not limit the scope of the present utility model.

[0031] The description of at least one exemplary embodiment below is merely illustrative in nature and in no way serves as a limitation to the present utility model and its application or use.

[0032] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification.

[0033] In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] As Figures 1 to 8 shown, an embodiment of the present utility model discloses a portable negative pressure suction therapeutic apparatus, including: a device housing 1, a handle 11 is provided at the top of the device housing 1; a micro-vacuum negative pressure suction treatment module 2, the micro-vacuum negative pressure suction treatment 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 treatment module 2 is arranged on the device housing 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 housing 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 a negative pressure mode 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 detected by the pressure sensor 32 reaches the pressure set by the control board 31, the control board 31 controls the negative pressure generating device 21 to stop working.

[0036] The portable negative pressure suction therapy instrument of the present application is provided with a handle 11 at the top of the device housing 1, so as to facilitate the user to carry the portable negative pressure suction therapy instrument with one hand for movement. When the portable negative pressure suction therapy instrument is too heavy to be carried with one hand, the user can carry and move it through the shoulder strap 12 provided at the top of the handle 11. Compared with the method of using a wheeled moving device, these carrying and moving methods have the advantage of more flexible movement, are convenient for carrying and moving in places with uneven ground, and meet the use requirements in occasions such as stair carrying, field emergency and ruins rescue.

[0037] The negative pressure generating device 21 generates negative pressure suction and transmits it to the micro-vacuum negative pressure suction therapy 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 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, which can make the wound surface attached to the dressing layer 25 in a vacuum environment. And by using the suction effect of the negative pressure generating device 21, the exudate at the wound surface can be adsorbed into the liquid storage bottle 24, and the exudate at the wound surface can be processed in time.

[0038] 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 for selection. By connecting the water seal bottle 23 to the negative pressure mode selection device 22 and opening the second solenoid valve to connect to the atmospheric pressure, since even a slight change in the suction force inside the dressing layer 25 can significantly affect the liquid level height in the water seal bottle 23, the liquid level height in the water seal bottle 23 can accurately reflect the suction force inside the dressing layer. It is also possible to clearly know the suction force inside the dressing layer 25 by visually observing or detecting the water level height of the water seal bottle 23 located outside the device housing. If the water level height 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 pipeline 202, appropriately reducing the suction force inside the dressing layer 25 and relieving the internal pressure of the wound surface. On the other hand, by opening the second solenoid valve to connect to the atmospheric pressure, when the negative pressure in the negative pressure pipeline 202 is too high, due to the influence of the external atmospheric pressure, external gas enters the negative pressure pipeline 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 pipeline 202 to keep the negative pressure in the negative pressure pipeline 202 at an appropriate level and avoid excessive suction force inside the dressing layer 25.

[0039] Therefore, the suction force of the negative pressure mode selection device 22 can be accurately adjusted by using the water seal bottle 23. In the precise negative pressure mode, the micro-vacuum is accurately adjusted by using the water seal bottle 23 to generate a 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, enabling the dressing layer 25 to have a stable and fine low negative pressure suction, making the wound surface in a relatively suitable low-suction and stable vacuum environment, and avoiding the situation that the dressing layer 25 compresses the wound surface and causes pain due to excessive vacuum during use.

[0040] The water seal bottle 23 and the liquid storage bottle 24 are respectively located on both sides of the device housing 1, so as to facilitate observing 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 height in the water seal bottle 23, the magnitude of the micro-vacuum suction can be known, which is convenient for accurately controlling the suction magnitude at the dressing layer 25; by observing the liquid height in the liquid storage bottle 24, it is convenient to know whether it is necessary to remove the liquid storage bottle 24 and clean the waste liquid therein. On the other hand, by respectively locating the water seal bottle 23 and the liquid storage bottle 24 on both sides of the device housing 1, when the water seal bottle 23 is blocked, it is convenient to remove and replace the water seal bottle 23; when the liquid storage bottle 24 is blocked or the waste liquid fills the bottle, it is convenient to remove and replace the liquid storage bottle 24.

[0041] The control board 31 controls the magnitude of the micro-vacuum suction of the negative pressure mode selection device 22 through the pressure sensor 32. By allowing the pressure sensor 32 to detect the pressures of various modes in the negative pressure mode selection device 22, when the pressure detected by the pressure sensor 32 reaches the set pressure of the control board 31 for the selected mode, the control board 31 controls the negative pressure generating device 21 to stop working, avoiding the situation of excessive suction at the drainage dressing layer 25.

[0042] The liquid storage bottle 24 is used for collecting and storing wound exudates. The dressing layer 25 functions to fit with the wound surface, absorb the waste liquid on the wound surface. At the same time, the dressing layer 25 replaces the important functions of the damaged skin and acts until the wound and skin lesion heal, providing comprehensive protection for the wound and creating a microenvironment that promotes wound healing. Moreover, a medical film is provided on the dressing layer 25, and the function of the medical film is to closely adhere to the skin to form a closed state.

[0043] Using the closed negative pressure treatment technology and the micro-vacuum negative pressure suction treatment module 2, during the wound surface treatment process, the liquid volume in the water seal bottle 23 of the micro-vacuum negative pressure suction treatment module 2 can be regulated, the water surface height of the water seal bottle 23 can be controlled, and the wound surface negative pressure load (vacuum degree) can be regulated relatively constantly for 24 hours, so as to keep the wound surface in a constant micro-vacuum state required clinically. It can promote the absorption of local exudates, dilate blood vessels, accelerate blood flow, have an obvious effect of enhancing blood circulation, dredge the embolism in the lesion area without damaging the wound surface, and enhance the blood oxygen supply and metabolism necessary for wound surface repair, so as to produce a significant treatment effect.

[0044] It should be noted that the control board 31 in the embodiment of the present invention can be a printed circuit board or a single-chip microcomputer with a simple program, etc.

[0045] It should be noted that for the negative pressure generating device 21 in the embodiment of the present invention, the negative pressure generating device 21 is a vacuum pump, and the vacuum pump can generate negative pressure by means of a mechanical pump, a turbo pump or a compressor, etc.

[0046] Such as Figure 2 AndFigure 3 As shown in Figure 3 , in an alternative embodiment of the utility model, the negative pressure mode selection device 22 includes a three-way joint 221, a first solenoid valve 222 and a second solenoid valve. The pressure sensor 32 and the first solenoid valve 222 are connected to any one port of the three-way joint 221. The three ports of the three-way joint 221 are respectively connected to a negative pressure generating pipeline 201, a negative pressure pipeline 202 and a precise negative pressure pipeline 203. The negative pressure generating pipeline 201 is connected to a negative pressure generating device 21. The negative pressure pipeline 202 is connected to a liquid storage bottle 24. The precise negative pressure pipeline 203 is connected to a water seal bottle 23. The second solenoid valve is connected to the water seal bottle 23. The first solenoid valve 222 and the second solenoid valve are used to control the connection to the atmospheric pressure. When the negative pressure mode selection device 22 selects the conventional negative pressure mode, the second solenoid valve is closed. When the negative pressure mode selection device 22 selects the precise negative pressure mode, the second solenoid valve connects to the atmospheric pressure.

[0047] By providing the second solenoid valve on the air inlet pipe 233 of the water seal bottle 23, the control board 31 can select the precise negative pressure mode or the conventional negative pressure mode by controlling the opening and closing of the second solenoid valve.

[0048] When selecting the conventional negative pressure mode, the control board 31 controls the second solenoid valve to close. By connecting the negative pressure generating device 21, the liquid inlet prevention member, the negative pressure pipeline 202 and the liquid storage bottle 24 in sequence, the vacuum suction generated by the negative pressure generating device 21 directly acts on the liquid storage bottle 24, and the drainage dressing layer 25 has a conventional negative pressure suction.

[0049] When selecting to enable the micro-vacuum of the water seal bottle 23 in the precise negative pressure mode, the control board 31 controls the second solenoid valve to open, so that the air inlet pipe 233 of the water seal bottle 23 is connected to the atmospheric pressure. By adding an appropriate amount of gas into the negative pressure system through the air inlet pipe 233 of the water seal bottle 23 to balance the air pressure and reducing the liquid level height of the air inlet pipe 233, the micro-negative pressure in the negative pressure system is precisely adjusted. The negative pressure generating device 21 stops working when the set micro-negative pressure is generated. By transmitting the set micro-negative pressure through the precise negative pressure pipeline 203, a micro-vacuum is generated inside the water seal bottle 23, so as to precisely adjust the size of the micro-negative pressure by using the water level height of the water seal bottle 23, and further use the pressure generated by the liquid height in the water seal bottle 23 to precisely maintain the low air pressure value at the negative pressure pipeline 202. A stable micro-negative pressure suction is generated by the micro-vacuum of the water seal bottle 23, so that the dressing layer 25 has a stable low-pressure vacuum suction, avoiding the pain caused by excessive vacuum pressure during use. The water seal bottle 23 can store a water level with a maximum height of 500 millimeters, and can precisely adjust the negative pressure below -5 kPa. The relatively high bottle body is convenient for adjusting the micro-vacuum suction of the water seal bottle 23.

[0050] Specifically, when the touch screen of the control module 3 selects to operate in the conventional negative pressure mode greater than -5 kPa, the second solenoid valve closes, isolating the water seal bottle 23 from the atmospheric pressure, and the negative pressure generating device 21 continues to operate. When the touch screen selects to operate in the precise negative pressure mode less than or equal to -5 kPa, the control board 31 controls the second solenoid valve to open, connecting the water seal bottle 23 to the atmospheric pressure. The negative pressure generating device 21 operates to cause micro-vacuum generation in the liquid inside the water seal bottle 23. After the set air pressure is detected by the pressure sensor 32, the negative pressure generating device 21 stops operating, and the negative pressure magnitude is finely adjusted by the water seal bottle 23.

[0051] When the portable negative pressure suction therapy instrument stops working, the first solenoid valve 222 connects to the atmospheric pressure, so that the pipeline air pressure returns to the normal air pressure, facilitating the negative pressure mode selection device 22 to return to the natural state, which is beneficial to pipeline maintenance and ensures the long-term normal use of the micro-vacuum negative pressure suction therapy system.

[0052] Specifically, the dust-proof hole plug 235 can replace the function of the second solenoid valve. The dust-proof hole plug 235 is arranged on the water seal bottle 23, and the dust-proof hole plug 235 is used to control the connection of the water seal bottle 23 to the atmospheric pressure.

[0053] As Figure 1 and Figure 2 As shown in

[0054] and Figure 1 In an alternative 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. The bottle body 231 stores sterile physiological saline. One end of the air outlet pipe 232 is above the water surface, and the other end of the air outlet pipe 232 is connected to the precise negative pressure pipeline 203. One end of the air inlet pipe 233 is below the water level, and the other end of the air inlet pipe 233 is connected to the second solenoid valve. By storing a certain height of sterile physiological saline inside the bottle body 231, a clean and hygienic negative pressure source is provided for the negative pressure pipeline 202, reducing the occurrence of contamination of the patient's wound. The negative pressure magnitude (vacuum degree) of the wound closure treatment system connected to the other end of the air outlet pipe 232 is precisely regulated by the water level in the air inlet pipe 233. Figure 3 As shown in

[0055] As Figure 2 and Figure 3 shown, in an alternative embodiment of the utility model, the negative pressure mode selection device 22 further includes a filter 223 and a liquid inlet prevention member. The filter 223 is disposed on the negative pressure pipeline 202, and the liquid inlet prevention member is disposed on the negative pressure generating pipeline 201. When liquid enters the liquid inlet prevention member through the pipeline, the negative pressure generating device 21 stops operating, preventing the liquid in the pipeline from flowing into the negative pressure generating device 21 along with the suction force and affecting the normal operation of the negative pressure generating device 21. By disposing the filter 223 on the negative pressure pipeline 202, the wound exudate collected in the liquid storage bottle 24 is prevented from flowing into the negative pressure pipeline 202, preventing the occurrence of a situation where the negative pressure cannot be transmitted due to pipeline blockage.

[0056] As Figure 1 and Figure 2 shown, in an alternative embodiment of the utility model, the micro-vacuum negative pressure suction treatment system further includes a drainage pump. One end of the drainage pump is connected to the liquid inlet prevention member or the liquid storage bottle 24, and the other end of the drainage pump is connected to the outside. 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 operates. After draining the liquid in the pipeline to the outside, the negative pressure generating device 21 resumes operation, preventing the liquid in the pipeline from flowing into the negative pressure generating device 21 along with the suction force and affecting the normal operation of the negative pressure generating device 21.

[0057] As Figure 1 shown, in an alternative embodiment of the utility model, both the water seal bottle 23 and the liquid storage bottle 24 are made of transparent materials, and scale lines are provided on the bottle bodies of the water seal bottle 23 and the liquid storage bottle 24. By making the water seal bottle 23 and the liquid storage bottle 24 of transparent materials, it is convenient to observe the liquid conditions in the water seal bottle 23 and the liquid storage bottle 24. Scale lines are provided on the bottle bodies of the water seal bottle 23 and the liquid storage bottle 24, enabling more specific and detailed observation of the liquid conditions. By observing the scale value corresponding to the liquid level height in the water seal bottle 23 on the bottle body 231, the magnitude of the micro-vacuum suction can be known, facilitating precise control of the suction force at the dressing layer 25; by observing the scale at which the liquid height in the liquid storage bottle 24 is located, it is convenient to know how much is left until the bottle is full, and to know when to replace the liquid storage bottle 24.

[0058] In an alternative embodiment of the utility model, fixing members are respectively disposed on both sides of the device housing 1, and the water seal bottle 23 and the liquid storage bottle 24 are disposed on the fixing members. The fixing members include a limiting ring and a base. The limiting ring abuts against the side surfaces of the water seal bottle and the liquid storage bottle 24, and the base abuts against the bottom surfaces of the water seal bottle 23 and the liquid storage bottle 24. By respectively disposing fixing members on both sides of the device housing 1, the water seal bottle 23 and the liquid storage bottle 24 are fixed on both sides of the housing. By using the method of fixing with a limiting ring plus a base, the water seal bottle 23 and the liquid storage bottle 24 are limited and fixed to a certain extent and are also convenient to take out.

[0059] As Figure 2 and Figure 3 shown, in an alternative embodiment of the utility model, a silencer 26 is provided at the air outlet end of the negative pressure generating device 21, and the silencer 26 communicates with the atmospheric pressure. By providing the silencer 26 at the air outlet end of the negative pressure generating device 21, the noise generated by the high-speed gas generated by the negative pressure generating device 21 is reduced, which helps the patient to rest and treat.

[0060] As Figure 1 shown, in an alternative embodiment of the utility model, a shoulder strap 12 is provided at the top of the handle 11. By providing the shoulder strap 12 at the top of the handle 11, when the portable negative pressure suction therapeutic apparatus is too heavy to be held with one hand, it can be carried and moved by using the shoulder strap 12 provided at the top of the handle 11.

[0061] As Figure 1 shown, in an alternative embodiment of the utility model, the control module 3 further includes a touch display screen 33, and the touch display screen 33 is arranged on the side surface of the device housing 1. By arranging the touch display screen 33 on the side surface of the device housing 1, it is convenient for the user to operate and easy to select the negative pressure mode and adjust the micro-vacuum suction force.

[0062] As Figure 1 and Figure 4 shown, two drainage tubes are provided on the dressing layer 25, and both of the two 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 situation that the damaged tissue blocks the dressing layer 25 is reduced.

[0063] As Figure 5 and Figure 8 shown, in an alternative embodiment of the utility model, the liquid bottle cap communicates with the negative pressure pipeline of the air outlet pipe 232 and the interface of the air outlet pipe 232 with the dressing layer. The air outlet pipe 232 liquid bottle cap is arranged on the body of the air outlet pipe 232 liquid storage bottle. The body of the air outlet pipe 232 liquid storage bottle is provided with a liquid cavity and a plug cavity. The plug cavity of the air outlet pipe 232 communicates with the liquid cavity of the air outlet pipe 232 and the negative pressure pipeline of the air outlet pipe 232. The floating plug of the air outlet pipe 232 is arranged in the plug cavity of the air outlet pipe 232, and the floating plug of the air outlet pipe 232 is used to block the negative pressure pipeline of the air outlet pipe 232.

[0064] By arranging a floating plug in the plug cavity, when the liquid cavity is almost full of exudate and exudation fluid, the liquid level in the plug cavity communicated with the liquid cavity rises, and the floating plug 243 moves to the port of the negative pressure pipeline 202 as the liquid level in the plug cavity 207 rises. The floating plug 243 blocks the negative pressure pipeline 202 before the liquid cavity 206 is full, preventing the dressing layer 25 from sucking in exudate and exudation fluid, and avoiding the negative pressure pipeline 202 from sucking in exudate or exudation fluid when the liquid cavity 206 is full, ensuring the safety of the treatment process.

[0065] Specifically, the liquid storage bottle 24 includes a liquid storage bottle body 241, a liquid storage bottle cap 242, a floating plug 243, and a rubber air valve 244. The rubber air valve 244 is disposed between the negative pressure pipeline 202 and the floating plug 243, and the plug cavity 207, the rubber air valve 244, and the negative pressure pipeline 202 are communicated in sequence. By providing the rubber air valve 244 between the negative pressure pipeline 202 and the floating plug 243, when the liquid cavity 206 is almost full, the rubber air valve 244 tightly fits the gap between the negative pressure pipeline 202 and the floating plug 243, strengthening the effect of the floating plug 243 blocking the negative pressure pipeline 202.

[0066] Such as Figure 6 and Figure 7 As shown in the figure, in an alternative embodiment of the utility model, the water seal bottle 23 of the air outlet pipe 232 includes a bottle body 231, a dust-proof hole plug 235, an air outlet pipe 232, and an air inlet pipe 233. The air outlet pipe 232 stores sterile physiological saline in the bottle body 231. One end of the air outlet pipe 232 is above the water surface, and the other end of the air outlet pipe 232 is connected to the negative pressure mode selection device 22 of the air outlet pipe 232. The first port 204 of the air inlet pipe of the air outlet pipe 232 is below the water level, and the second port 205 of the air inlet pipe of the air outlet pipe 232 is communicated with the atmosphere. The dust-proof hole plug 235 of the air outlet pipe 232 is disposed on the second port 205 of the air inlet pipe of the air outlet pipe 232. The radius D of the second port 205 of the air inlet pipe of the air outlet pipe 232 ranges from 0.2 to 0.4 mm, where D is the radius of the second port 205 of the air inlet pipe.

[0067] By setting the radius range of the second port 205 of the air inlet pipe to 0.2 to 0.4 mm, the air intake flow can be accurately restricted, making the negative pressure change generated by the water seal bottle 23 smaller, avoiding large fluctuations in the negative pressure of the negative pressure pipeline 202, and helping to reduce the machine noise generated during the treatment process.

[0068] Radius range of the second port of the intake pipe 0.2～0.4 0.5～0.6 0.7～0.9 Machine noise level Small Larger Large

[0069] Table 1 Machine Noise Table

[0070] As shown in Table 1, when the radius range of the second port 205 of the air inlet pipe is set to 0.2 to 0.4 mm, the machine noise can be significantly reduced, giving the patient a comfortable experience. When the radius of the second port 205 of the air inlet pipe is less than 0.2 mm, the second port 205 of the air inlet pipe is too small, making it difficult for gas to flow into the water seal bottle 23 and affecting the effect of the water seal bottle 23 in adjusting the micro negative pressure.

[0071] The dust-proof hole plug is provided on the second port 205 of the intake pipe, effectively preventing impurities such as dust and microorganisms from entering the water seal bottle 23, and ensuring the purity of the liquid stored in the water seal bottle 23 and the safety of the treatment process. In the precise negative pressure mode, removing the dust-proof hole plug can connect the intake pipe 233 to the atmospheric pressure, so that the water seal bottle 23 can precisely adjust the micro negative pressure.

[0072] Specifically, the side wall of the water seal bottle 23 is provided with a maximum water level line. The water seal bottle 23 includes a bottle body 231, a bottle cap 234, a dust-proof hole plug 235, an air outlet pipe 232 and an intake pipe 233. The bottle cap 234 is arranged on the bottle body 231, and the dust-proof hole plug 235, the air outlet pipe 232 and the intake pipe are all arranged on the bottle cap 234.

[0073] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope 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 suction therapy module, the micro-vacuum negative pressure suction therapy module comprises 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 suction therapy module is arranged on the device housing, the negative pressure generating device, the negative pressure mode selecting 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 housing, the water seal bottle is connected to the negative pressure mode selecting device, and the negative pressure mode selecting device is used to select negative pressure modes with different degrees of suction; A control module, the control module includes a control board 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 board, the control board 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 a negative pressure generating pipeline, a negative pressure pipeline, and a 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 pipeline. 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 pipeline, 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 comprises a filter and a liquid inlet prevention component, wherein 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 includes a bottle body, a dustproof hole plug, 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 negative pressure mode selection device. The first port of the air inlet pipe is located below the horizontal plane, and the second port of the air inlet pipe is connected to the atmosphere. The dustproof hole plug is arranged on the second port of the air inlet pipe.

8. The portable negative pressure suction therapeutic apparatus according to claim 7, characterized in that: The radius of the second port of the air inlet pipe is in the range of 0.2 to 0.4 mm.

9. The portable negative pressure suction therapeutic apparatus 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 2, characterized in that: The liquid storage bottle includes a liquid storage bottle body, a liquid storage bottle cap and a floating plug. The liquid storage bottle cap is connected to the negative pressure pipeline and the interface of the dressing layer. The liquid storage bottle cap is arranged on the liquid storage bottle body. The liquid storage bottle body is provided with a liquid cavity and a plug cavity. The plug cavity is connected to the liquid cavity and the negative pressure pipeline. The floating plug is arranged in the plug cavity. The floating plug is used to plug the negative pressure pipeline.

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