Portable negative pressure suction device for wound surface treatment in burn and plastic surgery

Abstract

The invention relates to the technical field of burn surgery, in particular to a portable negative pressure suction device for wound treatment in burn and plastic surgery, which comprises a treatment box, a cover plate and a storage box, the top of the treatment box is provided with an opening, and the cover plate is higher than the storage box; a plurality of first connecting rods are symmetrically hinged to the inner side wall in the width direction of the treatment box, and the top ends of the first connecting rods are hinged to the bottom of the cover plate; connecting plates are symmetrically and fixedly connected to the inner side wall in the width direction of the treatment box, and a plurality of second connecting rods are symmetrically hinged to the sides, away from the inner side wall of the treatment box, of the connecting plates. The top ends of the second connecting rods are hinged to the outer wall of the storage box, and third connecting rods are hinged to the second connecting rods close to the first connecting rods. The cleaning liquid is conveyed to the wound surface position through the conveying assembly, the wound surface can be cleaned or disinfected, bacteria, exudate and necrotic tissue around the wound surface can be removed easily, and a good environment is created for healing of the wound surface.

Description

Technical Field

[0001] The present invention relates to the technical field of burn surgery, and particularly to a portable negative pressure suction device for wound treatment in burn and plastic surgery. Background Art

[0002] A Portable Negative Pressure Wound Therapy (PNPWT) is a medical device used to promote wound healing. It creates a controllable negative pressure environment on the wound surface, helps remove exudate, reduce edema, increase blood flow, and promote the formation of granulation tissue, thereby accelerating the healing process of burn and traumatic wounds.

[0003] In the prior art, some negative pressure suction devices usually have relatively single functions. Specifically, such devices often can only perform the task of negative pressure suction and cannot integrate other important auxiliary treatment functions, such as an automated cleaning function. This means that medical staff have to rely on additional manual steps for wound irrigation and other treatments. Due to the lack of a flushing function, these devices are difficult to handle complex wounds that require frequent cleaning, especially in the field of burn and plastic surgery, where the wounds may contain a large amount of exudate or other contaminants, and negative pressure suction alone is not sufficient to ensure good healing conditions.

[0004] In summary, how to solve the problem that the devices in the prior art only have the negative pressure suction function, resulting in difficulty in ensuring good healing conditions has become a difficult problem that needs to be solved urgently in the current field. Therefore, it is necessary to propose a portable negative pressure suction device for wound treatment in burn and plastic surgery. Summary of the Invention

[0005] To solve the above problems, the present invention provides a portable negative pressure suction device for wound treatment in burn and plastic surgery, which uses a conveying component to convey a cleaning liquid to the wound position, can clean or disinfect the wound surface, helps remove bacteria, exudate, and necrotic tissue around the wound, and creates a good environment for the healing of the wound surface.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A portable negative pressure suction device for wound treatment in burn and plastic surgery, including a treatment box, a cover plate, and a storage box. An opening is provided at the top of the treatment box, and the height of the cover plate is higher than that of the storage box; a number of first connecting rods are symmetrically hinged to the inner side walls in the width direction of the treatment box, and the tops of the first connecting rods are all hinged to the bottom of the cover plate; the inner side walls in the width direction of the treatment box are also symmetrically fixedly connected with connecting plates, and a number of second connecting rods are symmetrically hinged to one side of the connecting plates away from the inner side walls of the treatment box.

[0007] The tops of the second connecting rods are all hinged to the outer wall of the storage box. Third connecting rods are hinged to the second connecting rods close to the first connecting rods. The ends of the third connecting rods far from the second connecting rods are all hinged to the adjacent first connecting rods; a rotating assembly for driving the rotation of one of the first connecting rods is provided on one of the first connecting rods hinged to the third connecting rod.

[0008] The storage box includes a cleaning chamber for storing cleaning liquid and a waste liquid chamber for storing waste liquid. Material ports are communicated with the tops of the cleaning chamber and the waste liquid chamber respectively, and top covers are detachably connected to the tops of the material ports; a conveying assembly for conveying the cleaning liquid and a suction assembly for sucking the waste liquid are provided in the storage box.

[0009] The technical principle of the above solution is as follows:

[0010] The rotating assembly drives the rotation of one of the first connecting rods. Since the two ends of the first connecting rod are respectively hinged to the inner side wall of the treatment box and the cover plate, the first connecting rod is hinged with the third connecting rod, the other end of the third connecting rod is hinged with the second connecting rod, and the other end of the second connecting rod is hinged with the storage box; therefore, when the first connecting rod rotates, due to the connection of the third connecting rod, the rotation direction of the second connecting rod is opposite to that of the first connecting rod. Through this connection, the first connecting rod and the second connecting rod can be folded or unfolded with each other. And because the height of the cover plate is higher than that of the storage box, the connecting plate makes the first connecting rod and the second connecting rod staggered with each other, so that the storage box can be received inside the treatment box, and the cover plate plays an additional protective role. After the storage box is unfolded, the conveying assembly is used to convey the cleaning liquid to the wound surface to clean or disinfect the wound surface; after the treatment is completed, the suction assembly is used to suck the remaining waste liquid and exudate on the wound surface, etc., which helps the healing of the wound surface.

[0011] The above solution has the following beneficial effects:

[0012] 1. In the present invention, the first connecting rod, the second connecting rod and the third connecting rod together constitute a mechanical linkage mechanism. By driving the rotation of one of the first connecting rods through the rotating assembly, the entire linkage mechanism system can be driven to move, thereby realizing the opening and closing of the cover plate and the receiving and unfolding of the storage box. This design allows the device to be easily opened or closed without using tools. When the storage box is received, the whole device is compact in volume, convenient to carry and move, and suitable for use in different medical scenarios. At the same time, the height design of the cover plate enables it to play an additional protective role when the storage box is received, preventing external pollutants from entering the inside of the treatment box.

[0013] 2. In the present invention, the storage box is internally provided with an independent cleaning chamber and a waste liquid chamber, which are respectively used for storing the cleaning liquid and collecting the waste liquid sucked out from the wound surface. Such a partition design avoids cross-contamination between the two liquids and is convenient for separate management and treatment, further improving the safety of wound treatment.

[0014] 3. The present invention uses a conveying component to convey the cleaning liquid to the wound position, which can clean or disinfect the wound, helping to remove bacteria, exudates and necrotic tissues around the wound and creating a good environment for the healing of the wound. After the treatment is completed, the suction component can suck the remaining waste liquid, exudate and cell debris, etc., which not only simplifies the traditional manual flushing process, but also can complete the cleaning and suction, further promoting the rapid healing of the wound.

[0015] Furthermore, the rotating component includes a controller, a rotating rod and a telescopic member for pushing the rotating rod. The controller is used to control the telescopic member to expand and contract; the rotating rod is fixedly connected to the adjacent first connecting rod, the output shaft of the telescopic member is fixedly connected to the bottom end of the rotating rod, and the telescopic member is fixedly connected to the inner side wall of the treatment box.

[0016] Beneficial effects: Since the output shaft of the telescopic member is fixedly connected to the bottom end of the rotating rod, and the rotating rod is fixedly connected to the adjacent first connecting rod, when the telescopic member drives the rotating rod to move, the first connecting rod can be made to rotate around its hinge point with the treatment box. Thus, the automatic opening and closing of the cover plate and the storage box are realized, reducing manual operation, saving time and effort.

[0017] Furthermore, the conveying component includes a piston cylinder, a suction pipe and a conveying pipe. The piston cylinder is fixedly connected to the inner side wall of the storage box; a piston rod is slidably fitted to the inner side wall of the piston cylinder, and a driving component for driving the piston rod to reciprocate is provided outside the piston cylinder.

[0018] Both ends of the piston rod are fixedly connected with rubber pistons. The suction pipe is communicated with the cleaning chamber, and the conveying pipe is communicated with the wound; both the suction pipe and the conveying pipe are communicated with the inside of the piston cylinder, and a conveying check valve is communicated at the connection of the suction pipe and the conveying pipe with the piston cylinder, and the flow direction of the conveying check valve is towards the wound.

[0019] Beneficial effects: The driving component drives the piston rod to reciprocate. Since the piston rod is fixedly connected with a rubber piston, the suction pipe is communicated with the cleaning chamber, and the conveying pipe is communicated with the wound, during the process of the piston rod driving the rubber piston to reciprocate, a negative pressure suction force and a negative pressure release thrust can be generated, so as to convey the cleaning liquid in the cleaning chamber. Since a conveying check valve is provided at the connection of the suction pipe and the conveying pipe with the piston pipe, and the flow direction of the conveying check valve is towards the wound; therefore, the function of the conveying check valve is used to make the liquid in the cleaning chamber only flow towards the wound and will not cause backflow, reducing the pollution risk caused by reverse flow, thereby improving the cleanliness of the wound environment.

[0020] Further, the suction assembly includes a suction pipe and a waste liquid pipe. The suction pipe is connected to a suction nozzle, and the waste liquid pipe is connected to a waste liquid chamber. Both the suction pipe and the waste liquid pipe are connected to the side of the piston cylinder away from the delivery pipe. At the connection of the suction pipe and the waste liquid pipe with the piston cylinder, a suction check valve is connected. The flow direction of the suction check valve is towards the waste liquid chamber.

[0021] Beneficial effects: By placing the suction nozzle at the wound surface and making it closely fit the outer edge of the wound surface. Since the suction nozzle is connected to the suction pipe and the waste liquid pipe is connected to the waste liquid chamber, and both the suction pipe and the waste liquid pipe are connected to the other side of the piston cylinder, during the reciprocating movement of the piston rod, the suction force generated by negative pressure suction and the thrust for releasing negative pressure can also be achieved, so that the suction force generated by negative pressure suction inside the suction nozzle can suck the accumulated liquid inside the wound surface into the waste liquid chamber. The suction check valve provides a guiding function, enabling the waste liquid to only flow into the waste liquid chamber and reducing the risk of cross - contamination.

[0022] Further, the driving assembly includes a rotating wheel and a rotating member for driving the rotating wheel to rotate. The controller is used to control the rotating member to rotate. The rotating member is fixedly connected to the outer side wall of the storage tank. The output shaft of the rotating member penetrates the side walls of the storage tank and the piston cylinder and extends into the piston cylinder to be coaxially fixedly connected to the rotating wheel.

[0023] A number of toggle rods are fixedly connected at equal intervals on the side of the rotating wheel away from the rotating member. A cavity is formed inside the piston rod. A number of teeth are fixedly connected to both the inner top wall and the inner bottom wall of the piston rod. The teeth are all engaged with the toggle rods. The length of the teeth on the inner bottom wall of the piston rod near the delivery pipe is greater than the engagement length with the toggle rod, and the length of the teeth on the inner top wall of the piston rod near the waste liquid pipe is greater than the engagement length with the toggle rod.

[0024] Beneficial effects: By driving the rotating wheel to rotate through the rotating member. Since a number of toggle rods are fixedly connected at equal intervals on the rotating wheel, and the toggle rods are all engaged with the teeth on the upper and lower sides, and the length of the teeth at the first end is greater than the engagement length with the toggle rod, during the process of the rotating wheel driving the toggle rods to rotate, the toggle rods can drive the teeth at the first end to displace. After displacement, the subsequent teeth can continue to be engaged with the toggle rods. Thus, the toggle rods can drive the piston rod to reciprocate. Through one power component, two different operations of conveying and suction can be achieved simultaneously, simplifying the device structure and improving the integration and efficiency of the device.

[0025] Further, the rotating rod is arc - shaped. The arc - shaped design is used to shorten the telescopic stroke of the output shaft of the telescopic member.

[0026] Beneficial effects: Through the arc - shaped design of the rotating rod, not only can the telescopic stroke of the output shaft of the telescopic member be shortened, enabling the telescopic member to effectively drive the rotating rod to move, but also it is beneficial to avoid the rotating rod being too long and contacting the inner wall of the processing box, thereby avoiding the contraction mechanism of the first connecting rod being affected during the movement process.

[0027] Further, a notch for the movement of the storage box is formed in the outer wall of the processing box on the side close to the storage box.

[0028] Beneficial effects: Through the design of the notch, necessary moving space can be provided for the storage box, enabling the storage box to fold or unfold inside the processing box without being hindered by the outer wall.

[0029] Further, a pressure sensor is fixedly connected to the inner wall of the suction nozzle, and the controller is used to receive the pressure signal of the pressure sensor and control the rotation speed of the rotating member based on the pressure signal.

[0030] Beneficial effects: Through the design of the pressure sensor, the negative pressure state at the wound surface can be monitored in real time, ensuring that the pressure during the negative pressure suction process always remains within a safe and effective range. If it is detected that the pressure is too high or too low, the controller can adjust the movement frequency and stroke of the piston rod to restore to the ideal negative pressure level; this not only improves the safety of the treatment but also optimizes the treatment effect.

[0031] Further, a plurality of universal wheels are fixedly connected to the outer wall of the processing box on the side close to the telescopic member, and each universal wheel is provided with a foot brake.

[0032] Beneficial effects: Through the design of the universal wheels, the entire device can be easily moved between different positions, and the foot brakes can fix the universal wheels after the device reaches the predetermined position to prevent accidental sliding, improving the flexibility and convenience of operation.

[0033] Further, a telescopic pull rod is fixedly connected to the side of the processing box away from the universal wheels.

[0034] Beneficial effects: The design of the telescopic pull rod enables the user to easily pull the processing box, especially in the case of long distances or frequent movement, reducing the physical consumption of manual handling.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is an axonometric view of the portable negative pressure suction device for wound treatment in burn and plastic surgery of the present invention.

[0037] Figure 2 is an installation schematic diagram of the rotating assembly in the portable negative pressure suction device for wound treatment in burn and plastic surgery of the present invention.

[0038] Figure 3 is a cross-sectional view of the piston cylinder in the portable negative pressure suction device for wound treatment in burn and plastic surgery of the present invention.

[0039] The reference numerals in the accompanying drawings of the specification include: 1, processing box; 2, cover plate; 3, storage box; 4, first connecting rod; 5, second connecting rod; 6, third connecting rod; 7, connecting plate; 8, top cover; 9, rotating rod; 10, electric push rod; 11, piston cylinder; 12, suction pipe; 13, delivery pipe; 14, piston rod; 15, rubber piston; 16, delivery check valve; 17, suction pipe; 18, waste liquid pipe; 19, suction check valve; 20, rotating motor; 21, rotating wheel; 22, toggle rod; 23, cogs; 24, universal wheel; 25, telescopic pull rod. Specific embodiments

[0040] The following is a further detailed description through specific embodiments:

[0041] Embodiment 1:

[0042] As shown in the attached Figures 1 - 3 figures: A portable negative pressure suction device for wound treatment in burn and plastic surgery, including a processing box 1, a cover plate 2 and a storage box 3. An opening is provided at the top of the processing box 1, and the position height of the cover plate 2 is higher than that of the storage box 3; A plurality of first connecting rods 4 are symmetrically hinged to the inner side walls in the width direction of the processing box 1, and the tops of the first connecting rods 4 are respectively hinged to the bottom of the cover plate 2; Connecting plates 7 are also symmetrically fixed to the inner side walls in the width direction of the processing box 1 by screws, and a plurality of second connecting rods 5 are symmetrically hinged to the other side of each connecting plate 7.

[0043] The tops of the second connecting rods 5 are respectively hinged to the outer wall of the storage box 3. The third connecting rods 6 are hinged to the right-side second connecting rods 5, and the right ends of the third connecting rods 6 are respectively hinged to the adjacent first connecting rods 4; A rotating assembly for driving the rotation of one of the first connecting rods 4 hinged to the third connecting rod 6 is provided on one of the first connecting rods 4.

[0044] The storage box 3 includes a cleaning chamber for storing cleaning liquid and a waste liquid chamber for storing waste liquid. In this embodiment, the cleaning liquid is selected as physiological saline. Material ports are communicated with the tops of both the cleaning chamber and the waste liquid chamber, and top covers 8 are detachably connected to the tops of the material ports by threads; A delivery assembly for delivering the cleaning liquid and a suction assembly for sucking the waste liquid are provided in the storage box 3.

[0045] The rotating assembly includes a controller, a rotating rod 9 and a telescopic member for pushing the rotating rod 9. In this embodiment, the telescopic member is an electric push rod 10, and the controller is used to control the telescopic movement of the electric push rod 10; The rotating rod 9 is fixedly connected to the adjacent first connecting rod 4 by screws, the output shaft of the electric push rod 10 is fixedly connected to the bottom end of the rotating rod 9 by screws, and the electric push rod 10 is fixedly connected to the inner side wall of the processing box 1 by screws.

[0046] Specifically, since the output shaft of the electric push rod 10 is fixedly connected to the bottom end of the rotating rod 9 by screws, and the rotating rod 9 is fixedly connected to the first connecting rod 4 adjacent thereto by screws, when the electric push rod 10 drives the rotating rod 9 to move, the first connecting rod 4 can be rotated around the hinge point between it and the processing box 1. Thus, the first connecting rod 4 is automatically opened and closed, manual operations are reduced, and time and labor are saved.

[0047] The delivery assembly includes a piston cylinder 11, a suction pipe 12 and a delivery pipe 13. The piston cylinder 11 is fixedly connected to the inner wall of the storage box 3 by screws; the inner wall of the piston cylinder 11 is slidably fitted with a piston rod 14, and a driving assembly for driving the piston rod 14 to reciprocate is provided on the outer side of the piston cylinder 11.

[0048] Rubber pistons 15 are fixedly bonded at both ends of the piston rod 14, the suction pipe 12 is connected to the cleaning chamber, and the delivery pipe 13 is connected to the wound surface; the suction pipe 12 and the delivery pipe 13 are both connected to the inside of the piston cylinder 11, and the connection points between the suction pipe 12 and the delivery pipe 13 and the piston cylinder 11 are connected to a delivery check valve 16, and the flow direction of the delivery check valve 16 is toward the wound surface.

[0049] Combination Figure 3 As shown, the driving assembly includes a rotating wheel 21 and a rotating part for driving the rotating wheel 21 to rotate. In this embodiment, the rotating part is a rotating motor 20, and the controller is used to control the rotating motor 20 to rotate; the rotating motor 20 is bolted and fixedly connected to the outer wall of the storage box 3, and the output shaft of the rotating motor 20 passes through the side walls of the storage box 3 and the piston cylinder 11 and extends to the inside of the piston cylinder 11 and is coaxially fixedly connected to the rotating wheel 21.

[0050] A plurality of toggle rods 22 are fixedly connected with screws at equal intervals on the rotating wheel 21, a cavity is opened inside the piston rod 14, and a plurality of latch teeth 23 are fixedly connected with screws on the inner top wall and the inner bottom wall of the piston rod 14; the latch teeth 23 are all engaged with the toggle rod 22, the length of the latch teeth 23 on the left side of the inner bottom wall of the piston rod 14 is greater than the engagement length with the toggle rod 22, and the length of the latch teeth 23 on the right side of the inner top wall of the piston rod 14 is greater than the engagement length with the toggle rod 22.

[0051] Specifically, the rotation of the motor 20 drives the rotation of the rotating wheel 21. Since a number of toggle rods 22 are fixedly connected to the rotating wheel 21 at equal intervals by screws, and the toggle rods 22 are all engaged with the upper and lower cogs 23, and the length of the cog 23 at the leading end is greater than the engagement length with the toggle rod 22, so during the process of the rotating wheel 21 driving the toggle rod 22 to rotate, it can make the toggle rod 22 drive the cog 23 at the leading end to displace, and after the displacement, the subsequent cogs 23 can continue to engage with the toggle rod 22; thus, when the rotating wheel 21 rotates continuously, the toggle rod 22 can drive the piston rod 14 to reciprocate through the cogs 23. Only one power component is needed, which can simultaneously realize two different operations of conveying and suction, simplifies the device structure, and improves the integration and efficiency of the device.

[0052] Since rubber pistons 15 are fixedly bonded to both ends of the piston rod 14, the suction pipe 12 communicates with the cleaning chamber, and the delivery pipe 13 communicates with the wound surface, so during the process of the piston rod 14 driving the rubber pistons 15 to reciprocate, a negative pressure suction force and a negative pressure release thrust can be generated, thereby conveying the cleaning liquid in the cleaning chamber. Since delivery check valves 16 are provided at the connection points of the suction pipe 12 and the delivery pipe 13 with the piston pipe, and the flow directions of the delivery check valves 16 are all towards the wound surface; so the function of the delivery check valves 16 is utilized to make the liquid in the cleaning chamber only flow towards the wound surface and not generate backflow, reducing the pollution risk caused by reverse flow, thereby improving the cleanliness of the wound environment.

[0053] The suction assembly includes a suction pipe 17 and a waste liquid pipe 18. The suction pipe 17 is connected to a suction nozzle, and the waste liquid pipe 18 communicates with the waste liquid chamber; both the suction pipe 17 and the waste liquid pipe 18 communicate with the right side of the piston cylinder 11. Suction check valves 19 are connected at the connection points of the suction pipe 17 and the waste liquid pipe 18 with the piston cylinder 11, and the flow directions of the suction check valves 19 are all towards the waste liquid chamber.

[0054] Specifically, by placing the suction nozzle on the wound surface and making it closely fit the outer edge of the wound surface; since the suction nozzle is connected to the suction pipe 17, the waste liquid pipe 18 communicates with the waste liquid chamber, and both the suction pipe 17 and the waste liquid pipe 18 are connected to the other side of the piston cylinder 11, so during the reciprocating movement of the piston rod 14, a negative pressure suction force and a negative pressure release thrust can also be generated inside the right side of the piston cylinder 11, further making a negative pressure suction force generated inside the connected suction nozzle to suck the accumulated liquid inside the wound surface into the waste liquid chamber. The suction check valve 19 provides a guiding function, making the waste liquid only flow into the waste liquid chamber and reducing the risk of cross - contamination.

[0055] The specific implementation process is as follows: Before wound treatment, the electric push rod 10 drives one of the first connecting rods 4 to rotate. Since both ends of the first connecting rod 4 are hinged to the inner side wall of the treatment box 1 and the cover plate 2 respectively, the first connecting rod 4 is hinged with the third connecting rod 6, the other end of the third connecting rod 6 is hinged with the second connecting rod 5, and the other end of the second connecting rod 5 is hinged with the storage box 3. Therefore, when the first connecting rod 4 rotates, due to the connection of the third connecting rod 6, the rotation direction of the second connecting rod 5 is opposite to that of the first connecting rod 4. Through this connection, the first connecting rod 4 and the second connecting rod 5 can be folded or unfolded with each other. And because the height of the cover plate 2 is higher than that of the storage box 3, the connecting plate 7 is used to make the first connecting rod 4 and the second connecting rod 5 stagger, so that the storage box 3 can be received inside the treatment box 1, and the cover plate 2 plays an additional protective role. After the storage box 3 is unfolded, the cleaning liquid is transported to the wound position through the delivery pipe 13 to clean or disinfect the wound; after the treatment, the suction nozzle is used to suck the remaining waste liquid and exudate on the wound, which helps the wound to heal.

[0056] The first connecting rod 4, the second connecting rod 5 and the third connecting rod 6 together form a mechanical linkage mechanism. By driving one of the first connecting rods 4 to rotate through the electric push rod 10, the entire linkage mechanism system can be driven to move, thereby realizing the opening and closing of the cover plate 2 and the receiving and unfolding of the position of the storage box 3. This design allows the device to be easily opened or closed without using tools. When the storage box 3 is received, the whole device is compact in volume, easy to carry and move, and suitable for use in different medical scenarios. At the same time, the height design of the cover plate 2 enables it to play an additional protective role when the storage box 3 is received, preventing external pollutants from entering the inside of the treatment box 1.

[0057] There is an independent cleaning chamber and waste liquid chamber inside the storage box 3, which are respectively used to store the cleaning liquid and collect the waste liquid sucked out from the wound. Such a partition design avoids cross-contamination between the two liquids, and is convenient for separate management and treatment, further improving the safety of wound treatment. The cleaning liquid is transported to the wound position through the delivery pipe 13, which can clean or disinfect the wound, help remove bacteria, exudate and necrotic tissue around the wound, and create a good environment for the wound to heal. After the treatment, the suction pipe 17 and the suction nozzle can suck the remaining waste liquid, exudate and cell debris, etc., which not only simplifies the traditional manual flushing process, but also can complete cleaning and suction, further promoting the rapid healing of the wound.

[0058] Embodiment 2:

[0059] As shown in the attached Figure 2 figure, the difference from the above embodiment is that the rotating rod 9 is arc-shaped, and the arc design is used to shorten the telescopic stroke of the output shaft of the electric push rod 10.

[0060] The specific implementation process is as follows: Through the design of the arc-shaped rotating rod 9, not only can the telescopic stroke of the output shaft of the electric push rod 10 be shortened, enabling the electric push rod 10 to effectively drive the rotating rod 9 to move; but also it is beneficial to avoid the rotating rod 9 being too long and contacting the inner wall of the processing box 1, thereby preventing the contraction mechanism of the first connecting rod 4 from being affected during movement.

[0061] Embodiment 3:

[0062] As shown in the appended Figure 1 figures, the difference from the above embodiment is that a notch for the movement of the storage box 3 is provided on the outer wall of the processing box 1 close to the storage box 3.

[0063] The specific implementation process is as follows: Through the design of the notch, necessary moving space can be provided for the storage box 3, enabling the storage box 3 to fold or unfold inside the processing box 1 without being hindered by the outer wall.

[0064] Embodiment 4:

[0065] The difference from the above embodiment is that a pressure sensor is fixedly bonded to the inner wall of the suction nozzle, and the controller is used to receive the pressure signal of the pressure sensor and control the rotation speed of the rotation motor 20 based on the pressure signal.

[0066] The specific implementation process is as follows: Through the design of the pressure sensor, the negative pressure state at the wound surface can be monitored in real time to ensure that the pressure during the negative pressure suction process always remains within a safe and effective range. If it is detected that the pressure is too high or too low, the controller can adjust the movement frequency and stroke of the piston rod 14 to restore to the ideal negative pressure level; not only improving the safety of the treatment, but also optimizing the treatment effect.

[0067] Embodiment 5:

[0068] As shown in the appended Figure 1 and Figure 2 figures, the difference from the above embodiment is that a plurality of universal wheels 24 are fixedly connected to the outer wall on the left side of the processing box 1, and foot brakes are provided on the universal wheels 24.

[0069] The specific implementation process is as follows: Through the design of the universal wheels 24, the entire device can be easily moved between different positions, and the foot brakes can fix the universal wheels 24 after the device reaches the predetermined position to prevent accidental sliding, improving the flexibility and convenience of operation.

[0070] Embodiment 6:

[0071] As shown in the appended Figure 1 and Figure 2 figures, the difference from the above embodiment is that a telescopic pull rod 25 is fixedly connected to the right side of the processing box 1 by screws.

[0072] The specific implementation process is as follows: The design of the telescopic pull rod 25 enables the user to easily pull the processing box 1, especially in the case of long distances or frequent movement, reducing the physical consumption of manual handling.

[0073] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A portable negative pressure suction device for treating wounds in burn plastic surgery, comprising a treatment box (1), the top of which is provided with an opening, characterized in that: It also includes a cover plate (2) and a storage box (3); the cover plate (2) is located at a higher height than the storage box (3); The inner side wall of the processing box (1) in the width direction is symmetrically hinged with a plurality of first connecting rods (4), and the top ends of the first connecting rods (4) are hinged to the bottom of the cover plate (2); the inner side wall of the processing box (1) in the width direction is also symmetrically fixedly connected with a connecting plate (7), and a side of the connecting plate (7) away from the inner side wall of the processing box (1) is symmetrically hinged with a plurality of second connecting rods (5); The top end of the second connecting rod (5) is hinged to the outer wall of the storage box (3); the second connecting rod (5) close to the first connecting rod (4) is hinged to the third connecting rod (6); the end of the third connecting rod (6) away from the second connecting rod (5) is hinged to the first connecting rod (4) adjacent thereto; a rotating assembly for driving the first connecting rod (4) to rotate is provided on one of the first connecting rods (4) hinged to the third connecting rod (6); The storage box (3) comprises a cleaning chamber for storing cleaning liquid and a waste liquid chamber for storing waste liquid; the tops of the cleaning chamber and the waste liquid chamber are both connected to material ports, and the tops of the material ports are detachably connected to a top cover (8); A conveying component for conveying cleaning liquid and a suction component for sucking waste liquid are arranged in the storage box (3).

2. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 1, characterized in that: The rotating assembly comprises a controller, a rotating rod (9) and a telescopic member used to push the rotating rod (9), the controller being used to control the telescopic member to telescope; the rotating rod (9) is fixedly connected to a first connecting rod (4) adjacent thereto, the output shaft of the telescopic member is fixedly connected to the bottom end of the rotating rod (9), and the telescopic member is fixedly connected to the inner wall of the processing box (1).

3. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 2, characterized in that: The delivery assembly comprises a piston cylinder (11), a suction pipe (12) and a delivery pipe (13); the piston cylinder (11) is fixedly connected to the inner wall of the storage box (3); a piston rod (14) is slidably matched to the inner wall of the piston cylinder (11); a driving assembly for driving the piston rod (14) to reciprocate is provided on the outer side of the piston cylinder (11); Both ends of the piston rod (14) are fixedly connected with a rubber piston (15); the suction pipe (12) is connected to the cleaning chamber, and the delivery pipe (13) is connected to the wound surface; the suction pipe (12) and the delivery pipe (13) are both connected to the inside of the piston cylinder (11); the connection points between the suction pipe (12) and the delivery pipe (13) and the piston cylinder (11) are both connected with a delivery check valve (16); and the flow direction of the delivery check valve (16) is toward the wound surface.

4. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 3, characterized in that: The suction assembly comprises a suction pipe (17) and a waste liquid pipe (18); the suction pipe (17) is connected to a suction nozzle, and the waste liquid pipe (18) is connected to a waste liquid chamber; the suction pipe (17) and the waste liquid pipe (18) are both connected to a side of the piston cylinder (11) away from the delivery pipe (13); the connection points of the suction pipe (17) and the waste liquid pipe (18) with the piston cylinder (11) are both connected to a suction check valve (19); and the flow direction of the suction check valve (19) is toward the waste liquid chamber.

5. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 4, characterized in that: The driving assembly comprises a rotating wheel (21) and a rotating member for driving the rotating wheel (21) to rotate, and the controller is used to control the rotating member to rotate; the rotating member is fixedly connected to the outer wall of the storage box (3), and the output shaft of the rotating member passes through the storage box (3) and the side wall of the piston cylinder (11), extends to the inside of the piston cylinder (11), and is coaxially fixedly connected to the rotating wheel (21); A plurality of toggle rods (22) are fixedly connected at equal intervals to a side of the rotating wheel (21) away from the rotating member, a cavity is opened inside the piston rod (14), and a plurality of latching teeth (23) are fixedly connected to the inner top wall and the inner bottom wall of the piston rod (14); the latching teeth (23) are all meshed with the toggle rod (22), the length of the latching teeth (23) on the inner bottom wall of the piston rod (14) close to the delivery pipe (13) is greater than the meshing length with the toggle rod (22), and the length of the latching teeth (23) on the inner top wall of the piston rod (14) close to the waste liquid pipe (18) is greater than the meshing length with the toggle rod (22).

6. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 5, characterized in that: The rotating rod (9) is arc-shaped, and the arc-shaped design is used to shorten the telescopic stroke of the output shaft of the telescopic member.

7. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 6, characterized in that: The outer wall of the processing box (1) on one side close to the storage box (3) is provided with a notch for the storage box (3) to move.

8. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 7, characterized in that: A pressure sensor is fixedly connected to the inner wall of the suction nozzle, and the controller is used to receive a pressure signal from the pressure sensor and control the rotation speed of the rotating part based on the pressure signal.

9. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 8, characterized in that: A plurality of universal wheels (24) are fixedly connected to the outer wall of the processing box (1) on one side close to the telescopic member, and each universal wheel (24) is provided with a foot brake.

10. The portable negative pressure suction device for wound treatment in burn plastic surgery according to claim 9, characterized in that: A telescopic pull rod (25) is fixedly connected to one side of the processing box (1) away from the universal wheel (24).

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