Negative pressure wound therapy device

Abstract

The utility model relates to the field of medical apparatus and instruments provides a kind of negative pressure drainage device.Negative pressure drainage device includes bottom plate;Pressing plate, elastic member is connected between pressing plate and bottom plate, and exhaust separation membrane and drainage interface are provided on pressing plate;Transparent flexible film, it is connected between pressing plate and bottom plate, and bottom plate, pressing plate and transparent flexible film are enclosed to form the accommodation space for accommodating content, and scale line is provided on transparent flexible film;Drainage tube, and drainage interface is threadedly connected.The negative pressure drainage device can form stable negative pressure, meet clinical drainage demand;It can effectively realize the risk of preventing content backflow, overflow;It can also improve flow observation accuracy;Ensure clinical use safety.

Description

Technical Field

[0001] This utility model relates to the field of medical devices and provides a negative pressure drainage device. Background Technology

[0002] In clinical use, disposable negative pressure drainage devices are widely used for drainage and aspiration of various body fluids due to their convenience.

[0003] However, existing negative pressure drainage devices have some significant problems: First, these drainage balls are prone to accidental breakage during use, which makes it impossible to maintain negative pressure effectively and requires re-establishing negative pressure. This not only affects the continuity and effectiveness of treatment, but also increases the operational difficulty and workload of medical staff. Secondly, the negative pressure display is not intuitive or accurate enough, making it difficult for operators to understand the drainage status in a timely manner, which increases the risk of improper handling. Furthermore, some negative pressure drainage devices are poorly designed, making it easy for their internal contents to leak. This could not only pollute the environment but also cause cross-infection, increasing the risk of hospital-acquired infections and posing a safety hazard to patients and medical staff.

[0004] While various types of negative pressure drainage devices are available on the market, most still cannot completely solve the aforementioned problems. Traditional drainage ball designs often focus on simple negative pressure generation and maintenance functions, neglecting safety, convenience, and environmental friendliness during use.

[0005] This prompted researchers to seek a more optimized design to provide a more stable, safer, and more convenient disposable negative pressure drainage device that can effectively solve the problems in existing products, ensure that the risk of cross-infection and environmental contamination is minimized during clinical use, thereby improving the treatment effect and safety of patients. Utility Model Content

[0006] This utility model provides a negative pressure drainage device to solve the defects of negative pressure drainage devices in related technologies that are prone to backflow and leakage.

[0007] This utility model embodiment provides a negative pressure drainage device, including: Base plate; A pressing plate is connected to the base plate by an elastic element, and the pressing plate is provided with an exhaust separation membrane and a drainage interface; A transparent flexible film is connected between the pressing plate and the base plate. The base plate, the pressing plate, and the transparent flexible film form a receiving space for accommodating contents. The transparent flexible film is provided with scale lines. The drainage tube is threadedly connected to the drainage interface.

[0008] According to one embodiment of the present invention, a silver-plated layer is provided on the outer wall of the end of the drainage tube opposite to the drainage interface.

[0009] According to one embodiment of the present invention, a tube clamp is provided on the drainage tube, and the tube clamp is offset from the silver plating layer.

[0010] According to one embodiment of the present invention, the unit of the scale line is 50 ml.

[0011] According to one embodiment of the present invention, the transparent flexible film is a polyvinyl chloride transparent flexible film.

[0012] According to one embodiment of the present invention, a drain port is provided on the base plate, and a sealing element is detachably provided on the drain port.

[0013] According to one embodiment of the present invention, a drain pipe is provided at the drain outlet, and the sealing member is detachably connected to the drain pipe.

[0014] According to one embodiment of the present invention, the sealing member is threadedly connected to the drain pipe.

[0015] According to one embodiment of the present invention, a flushing pipe is also connected to the drainage pipe, the flushing pipe is inclined toward the base plate, and the angle between the flushing pipe and the drainage pipe is 10 degrees to 30 degrees.

[0016] According to one embodiment of the present invention, a pressure probe is also provided at the inlet end of the drainage tube.

[0017] According to the negative pressure drainage device provided in this embodiment, the spring elastic modulus design ensures that a stable negative pressure can be formed in the accommodating space after the pressing plate is reset, meeting clinical drainage needs. The venting separator membrane allows only gas to escape but prevents the contents from escaping, effectively preventing the risk of backflow and overflow. Therefore, through the coordinated use of elastic elements, the venting separator membrane, and threaded interfaces, efficient negative pressure drainage and anti-reflux functions are achieved. The scale lines combined with the transparent membrane improve the accuracy of drainage volume observation. The negative pressure drainage device provided in this embodiment ensures clinical safety through multiple anti-detachment and anti-leakage structures. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic perspective view of the negative pressure drainage device provided by this utility model.

[0020] Figure 2 This is a schematic side view of the negative pressure drainage device provided by this utility model.

[0021] Figure label: 100. Base plate; 102. Pressing plate; 104. Elastic element; 106. Exhaust separation membrane; 108. Drainage interface; 110. Transparent flexible membrane; 112. Drainage tube; 114. Silver plating layer; 116. Tube clamp; 118. Drain outlet; 120. Sealing element; 122. Drainage tube; 124. Flushing tube; 126. Pressure probe. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figure 1 and Figure 2 As shown, this embodiment of the utility model provides a negative pressure drainage device, comprising: Base plate 100; Pressing plate 102, elastic element 104 is connected between pressing plate 102 and base plate 100, and venting separator 106 and drainage interface 108 are provided on pressing plate 102. A transparent flexible film 110 is connected between the pressing plate 102 and the base plate 100. The base plate 100, the pressing plate 102 and the transparent flexible film 110 are arranged to form a accommodating space for accommodating contents. The transparent flexible film 110 is provided with scale lines. The drainage tube 112 is threadedly connected to the drainage interface 108.

[0024] According to the negative pressure drainage device provided in this embodiment of the present invention, the spring elastic modulus design ensures that after the pressing plate 102 is reset, a stable negative pressure can be formed in the accommodating space to meet clinical drainage needs. The venting separator 106 allows only the gas to be discharged, but prevents the contents of the accommodating space from being discharged, effectively preventing the risk of backflow and overflow of contents. Therefore, through the coordinated use of components such as the elastic element 104, the venting separator, and the threaded interface, efficient negative pressure drainage and anti-reflux functions are achieved. The scale lines combined with the transparent membrane improve the accuracy of drainage volume observation. The negative pressure drainage device provided in this embodiment of the present invention ensures clinical safety through multiple anti-detachment and anti-leakage structures.

[0025] Please continue reading Figure 1 and Figure 2The pressing plate 102 is connected to the base plate 100 through the elastic element 104. When pressed, air is released, and when released, it elastically resets to form negative pressure.

[0026] The exhaust separator 106 allows air to escape but prevents backflow, maintaining a negative pressure state in the containment space.

[0027] The scale lines on the transparent flexible membrane 110 visually display the drainage volume. At the same time, the transparent flexible membrane 110 also allows medical staff to visually observe the color and properties of the drained contents.

[0028] The drainage tube 112 and the interface are threaded together to ensure a secure connection and easy disassembly and replacement.

[0029] According to one embodiment of the present invention, a silver-plated layer 114 is provided on the outer wall of the end of the drainage tube 112 opposite to the drainage interface 108.

[0030] In one embodiment of the present invention, a silver plating layer 114 is provided on the outer wall of the end of the drainage tube 112 away from the drainage interface 108. The silver plating layer 114 is uniformly attached to the outer side of the tube wall by an electroplating process, and the thickness is 5 micrometers to 10 micrometers.

[0031] Silver ions have broad-spectrum antibacterial properties, which can effectively inhibit the growth of bacteria on the outer wall of the drainage tube 112, reduce the risk of cross-infection caused by tube contact, and at the same time improve the biocompatibility of the drainage tube 112, reducing the stimulation to the patient.

[0032] According to one embodiment of the present invention, a tube clamp 116 is provided on the drainage tube 112, and the tube clamp 116 is offset from the silver plating layer 114.

[0033] In one embodiment of this utility model, a tube clamp 116 is provided on the drainage tube 112. The tube clamp 116 is made of plastic and is fixed to the tube wall by an elastic buckle structure. It is offset from the silver plating layer 114 by 5 cm to 10 cm in the axial direction.

[0034] The staggered design prevents the clamp 116 from wearing down the silver plating layer 114, ensuring the antibacterial function remains effective. The clamp 116 can be opened and closed quickly, making it easy for medical staff to control the drainage speed, improving operational convenience, and preventing drainage interruption due to accidental contact.

[0035] According to one embodiment of the present invention, the unit of the scale line is 50 ml.

[0036] In one embodiment of this utility model, the scale lines on the transparent flexible film 110 are in units of 50 ml. The scale lines are laser etched with a line width of 0.2 mm and an adjacent scale spacing of 5 mm, clearly marked on the outside of the film.

[0037] The large-unit scale design makes it easy for medical staff to quickly read the drainage volume and reduce reading errors; the clear scale lines remain visible when the transparent flexible membrane 110 is filled or contracted, ensuring real-time monitoring of drainage progress and providing accurate data support for clinical diagnosis.

[0038] According to one embodiment of the present invention, the transparent flexible film 110 is a polyvinyl chloride transparent flexible film 110.

[0039] In one embodiment of this utility model, the transparent flexible film 110 is made of polyvinyl chloride (PVC) material with a thickness of 0.3 mm to 0.5 mm. It has the characteristics of being transparent, flexible and tensile-resistant. Its edges are sealed to the base plate 100 and the pressing plate 102 by a heat sealing process.

[0040] Polyvinyl chloride (PVC) material is low in cost and highly malleable, making it easy to mass-produce. Its transparency allows the contents of the container to be clearly seen, and its flexible structure can generate negative pressure with the elastic deformation of the pressing plate 102. At the same time, it is resistant to the chemical corrosion of the drainage fluid, ensuring the sealing and reliability of long-term use.

[0041] According to one embodiment of the present invention, a drain port 118 is provided on the base plate 100, and a sealing member 120 is detachably provided on the drain port 118; a drain pipe 122 is provided at the drain port 118, and the sealing member 120 is detachably connected to the drain pipe 122; the sealing member 120 is threadedly connected to the drain pipe 122.

[0042] In one embodiment of this utility model, a circular drain port 118 is provided at the bottom of the base plate 100. An outwardly extending drain pipe 122 is integrally formed around the edge of the drain port 118. The drain pipe 122 has an outer diameter of 10 mm and a length of 15 mm, and its outer wall is provided with an external thread with a width of 2 mm. The sealing component 120 is a screw-on cap made of medical-grade plastic. Its inner diameter matches the outer diameter of the drain pipe 122, and its inner wall is provided with an internal thread corresponding to the external thread. An anti-slip flange with a diameter of 25 mm is integrally formed on the top of the cap, and four anti-slip ridges are evenly distributed on the surface of the flange. The sealing component 120 is detachably connected to the drain pipe 122 by a screw-on engagement method. The engagement depth can be 8 mm to ensure an interference fit during sealing.

[0043] Compared to traditional plug-in occlusion, the threaded engagement structure is easier to operate, allowing medical staff to open / close with one hand. The anti-slip design also prevents gloves from slipping when they are wet with liquid, improving efficiency in emergency situations.

[0044] According to one embodiment of the present invention, a flushing pipe 124 is also connected to the drainage pipe 112. The flushing pipe 124 is inclined toward the bottom plate 100, and the angle between the flushing pipe 124 and the drainage pipe 112 is 10 degrees to 30 degrees.

[0045] In one embodiment of this utility model, the side wall of the drainage tube 112 is connected to the flushing tube 124 through a three-way connector. The flushing tube 124 is made of medical silicone material, is inclined towards the base plate 100, and preferably has an angle of 20 degrees with the axis of the drainage tube 112. The tube diameter is 3 mm to 5 mm, and the end is closed and has a side hole.

[0046] The inclined angle design allows the flushing fluid to flow along the bottom of the accommodating space, effectively flushing away residual body fluids adhering to the bottom plate 100 or the transparent flexible membrane 110, and preventing deposits from clogging the drainage tube 112; the included angle range of 10 degrees to 30 degrees takes into account both flushing efficiency and pipeline layout rationality, reduces the risk of liquid backflow, and improves the flushing effect while ensuring the stability of the drainage system.

[0047] According to one embodiment of the present invention, a pressure probe 126 is also provided at the inlet end of the drainage tube 112.

[0048] In one embodiment of this utility model, a miniature pressure probe 126 with a diameter of 2 mm to 3 mm is built into the inlet end of the drainage tube 112. The probe is connected to an external display device (not shown in the figure) through a wire, which can monitor the drainage pressure in real time and convert it into an electrical signal output.

[0049] The pressure probe 126 enables precise monitoring of negative pressure. Medical staff can intuitively obtain pressure values ​​through the display device, adjust the drainage speed in a timely manner, or deal with abnormal negative pressure (such as insufficient or excessive pressure), avoiding poor drainage or tissue damage caused by unstable negative pressure, and improving the safety and effectiveness of treatment.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A negative pressure drainage device, characterized in that, include: Base plate (100); A pressing plate (102) is connected to the base plate (100) by an elastic element (104), and the pressing plate (102) is provided with an exhaust separation membrane (106) and a drainage interface (108). A transparent flexible film (110) is connected between the pressing plate (102) and the base plate (100). The base plate (100), the pressing plate (102) and the transparent flexible film (110) form a accommodating space for accommodating contents. The transparent flexible film (110) is provided with scale lines. The drainage tube (112) is threadedly connected to the drainage interface (108); The drainage tube (112) has a flushing tube (124) connected to its side wall via a T-connector. The flushing tube (124) is made of medical silicone and is inclined toward the base plate (100). The angle between the flushing tube (124) and the drainage tube (112) is 10 to 30 degrees. The diameter of the flushing tube (124) is 3 to 5 millimeters, and the end is closed and has a side hole. The base plate (100) is provided with a drain port (118), and a drain pipe (122) is provided at the drain port (118). A sealing element (120) is detachably provided at the drain port (118). The sealing element (120) is detachably connected to the drain pipe (122), and the sealing element (120) is threadedly connected to the drain pipe (122).

2. The negative pressure drainage device according to claim 1, characterized in that, A silver-plated layer (114) is provided on the outer wall of the end of the drainage tube (112) opposite to the drainage interface (108).

3. The negative pressure drainage device according to claim 2, characterized in that, A pipe clamp (116) is provided on the drainage tube (112), and the pipe clamp (116) is offset from the silver plating layer (114).

4. The negative pressure drainage device according to claim 1, characterized in that, The unit of the scale is 50 milliliters.

5. The negative pressure drainage device according to claim 1, characterized in that, The transparent flexible film (110) is a polyvinyl chloride transparent flexible film (110).

6. The negative pressure drainage device according to any one of claims 1 to 5, characterized in that, A flushing pipe (124) is also connected to the drainage pipe (112). The flushing pipe (124) is inclined toward the base plate (100), and the angle between the flushing pipe (124) and the drainage pipe (112) is 10 degrees to 30 degrees.

7. The negative pressure drainage device according to any one of claims 1 to 5, characterized in that, A pressure probe (126) is also provided at the inlet end of the drainage tube (112).

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