Negative pressure control device for open wound

Abstract

The utility model provides a negative pressure control device for an open wound, which relates to the technical field of negative pressure control devices, and comprises a device negative pressure control valve, an air inlet and an air outlet are respectively arranged on two sides in the negative pressure control valve, a control tube is fixed at the top end of the outer wall of the negative pressure control valve, a fixing plate is fixed in the negative pressure control valve, and the air inlet and the air outlet are communicated with the control tube. A communicating hole is formed in the fixing plate, and a connecting sleeve plate matched with the communicating hole is fixed to one end of the fixing plate. Through the arrangement of the valve rod, the controller, the valve hole, the valve elements and the connecting sleeve plate, when the intensity of negative pressure needs to be controlled, the valve rod is controlled to ascend and descend through the controller, the valve rod drives the two valve elements to ascend and descend, at the moment, the distance between the valve elements and the valve hole is increased and decreased when the valve elements ascend and descend, and therefore the intensity of circulating gas in the negative pressure valve is controlled; and therefore, the effect of controlling the negative pressure is achieved, and the problem that the pressure cannot be accurately controlled in a traditional device is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure control devices, in particular to a negative pressure control device for open wounds. Background Art

[0002] Vacuum Sealing Drainage (VSD) is a method for treating various complex wounds and for deep drainage. VSD negative pressure sealing drainage technology refers to the technology of using VSD material + semipermeable membrane + three-way pipe + negative pressure aspirator for negative pressure aspiration. VSD negative pressure aspiration is a common treatment method in hospital emergency rooms, operating rooms and clinical wards to draw out harmful fluid from the patient's body through negative pressure. It is usually achieved using two negative pressure source devices: electric aspirator or central negative pressure.

[0003] In the prior art, such as Chinese patent publication number CN201720618960.3, a negative pressure valve is disclosed, including a cylinder, an upper cover plate and a flange, the upper end of the cylinder is connected to the lower cover plate with shoulders on both sides, and is characterized in that a breathable disc is fixed in the middle of the inner wall of the cylinder; a guide tube is provided in the center of the breathable disc, a guide column is installed in the guide tube, and the lower end of the guide column is connected to the U-shaped sealing head; a sealing rubber ring is installed between the U-shaped sealing head and the lower cover plate; a rubber block is installed at the connection between the guide column and the U-shaped sealing head; a hook is installed outside the cylinder, the upper cover plate and the lower cover plate, and a wedge block is installed between the hook and the lower cover plate. The utility model can respond to sudden changes in the pressure of the storage tank in a timely manner, has high sensitivity when converting between positive and negative pressures, good sealing, corrosion resistance, low cost, and convenient and quick replacement and disassembly of the sealing ring.

[0004] Although the negative pressure valve in the above patent has high sensitivity when switching between positive and negative pressures, good sealing, corrosion resistance, low cost, and convenient and quick disassembly and replacement of the sealing ring, the negative pressure of the negative pressure valve in the above device is not easy to regulate, and the intensity of the negative pressure cannot be accurately controlled. When it comes to open wounds or diabetic foot wounds, accurate pressure control is the main purpose. Therefore, we propose a new type of negative pressure control device for open wounds. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the pressure cannot be accurately controlled in the prior art, and to propose a negative pressure control device for open wounds.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a negative pressure control device for open wounds, comprising a negative pressure control valve, an air inlet and an air outlet are respectively arranged on both sides of the negative pressure control valve, a control tube is fixed to the top of the outer wall of the negative pressure control valve, a fixing plate is fixed in the negative pressure control valve, a connecting hole is opened in the fixing plate, a connecting sleeve matching the connecting hole is fixed at one end of the fixing plate, a pressure control structure for controlling the negative pressure amount of the negative pressure control valve is arranged in the connecting sleeve, a hose is arranged on one side of the negative pressure control valve, and connecting pieces are arranged at both ends of the hose, one of the connecting pieces is threadedly connected to one end of the negative pressure control valve.

[0007] Furthermore, the pressure control structure includes a control tube and a valve stem provided in the negative pressure control valve, the bottom end of the valve stem passes through a connecting sleeve, two valve cores are fixed on the outer wall of the valve stem, valve holes matching the valve cores are provided at both ends of the outer wall of the connecting sleeve, and the top end of the valve stem passes through the control tube and is installed with a controller.

[0008] Furthermore, a valve seat is fixed to the bottom end of the outer wall of the negative pressure control valve, and the bottom end of the valve stem is arranged in the valve seat.

[0009] Furthermore, a packing is provided inside the control tube on the outer side of the valve stem, a sealing cover is fixed to the top end of the control tube, and the top end of the valve stem passes through the sealing cover.

[0010] Furthermore, the fixing plate is arranged on a side close to the air inlet, the connecting sleeve is arranged on a side close to the air outlet, and a gap is left between the connecting sleeve and the inner wall of the negative pressure control valve.

[0011] Furthermore, both ends of the connecting piece are provided with a second screw groove, and both ends of the hose are respectively threadedly connected to the corresponding connecting pieces.

[0012] Furthermore, a first screw groove is provided on the inner wall of the negative pressure control valve located inside the air outlet, and a mounting plate is fixed on the outer wall of the negative pressure control valve located outside the air outlet, and a plurality of mounting holes are provided in the mounting plate.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] In the utility model, through the arrangement of the valve stem, controller, valve hole, valve core and connecting sleeve, when it is necessary to control the intensity of the negative pressure, it is only necessary to control the valve stem to be raised and lowered through the controller, so that the valve stem drives the two valve cores to be raised and lowered. At this time, the distance between the valve core and the valve hole will become larger or smaller when the valve core is raised and lowered, thereby controlling the intensity of the gas flowing in the negative pressure valve, thereby achieving the effect of controlling the negative pressure, thereby solving the problem that the pressure cannot be accurately controlled in traditional devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a negative pressure control device for an open wound is proposed for the utility model;

[0016] Figure 2 A cross-sectional view of a negative pressure control device for an open wound is provided for the utility model;

[0017] Figure 3 A cross-sectional view of a negative pressure control device for an open wound is provided for the utility model;

[0018] Figure 4 The utility model provides a cross-sectional view of a pressure control structure of a negative pressure control device for an open wound.

[0019] Legend: 1. Negative pressure control valve; 2. Air inlet; 3. Air outlet; 4. First screw groove; 5. Control tube; 6. Fixing plate; 7. Connecting hole; 8. Connecting sleeve; 9. Pressure control structure; 901. Valve stem; 902. Valve hole; 903. Valve core; 904. Controller; 10. Valve seat; 11. Packing; 12. Sealing cover; 13. Connecting piece; 14. Second screw groove; 15. Mounting plate; 16. Mounting hole; 17. Hose. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a negative pressure control device for open wounds, including a negative pressure control valve 1, an air inlet 2 and an air outlet 3 are respectively arranged on both sides of the negative pressure control valve 1, a control tube 5 is fixed to the top of the outer wall of the negative pressure control valve 1, a fixing plate 6 is fixed in the negative pressure control valve 1, a connecting hole 7 is opened in the fixing plate 6, a connecting sleeve 8 matching the connecting hole 7 is fixed at one end of the fixing plate 6, a pressure control structure 9 for controlling the negative pressure amount of the negative pressure control valve 1 is arranged in the connecting sleeve 8, a hose 17 is arranged on one side of the negative pressure control valve 1, and connectors 13 are arranged at both ends of the hose 17, and one of the connectors 13 is threadedly connected to one end of the negative pressure control valve 1.

[0023] The effect achieved by the entire embodiment 1 is that, through the setting of the fixed plate 6, the connecting hole 7 and the connecting sleeve 8, when the gas in the negative pressure control valve 1 flows, the flowing gas will flow from the connecting hole 7, and then through the setting of the pressure control structure 9 and the connecting sleeve 8, the size of the gas flowing out of the connecting hole 7 can be accurately controlled, thereby achieving the effect of pressure control. Through the setting of the connecting piece 13, on the one hand, the device can install and remove the hose 17 at any time, which is convenient for maintenance and replacement. On the other hand, it can be connected to the external drainage tank through the connecting piece 13 connected to the other end of the hose 17, which is more convenient to use.

[0024] Embodiment 2, as Figure 1-Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the pressure control structure 9 includes a control tube 5 and a valve stem 901 provided in the negative pressure control valve 1, the bottom end of the valve stem 901 passes through the connecting sleeve 8, two valve cores 903 are fixed on the outer wall of the valve stem 901, both ends of the outer wall of the connecting sleeve 8 are provided with valve holes 902 matching the valve cores 903, the top end of the valve stem 901 passes through the control tube 5 and is installed with a controller 904, a valve seat 10 is fixed to the bottom end of the outer wall of the negative pressure control valve 1, the bottom end of the valve stem 901 is arranged in the valve seat 10, a packing 11 is provided on the outside of the valve stem 901 in the control tube 5, and the control tube 5 A sealing cover 12 is fixed to the top of the valve stem 901, and the top of the valve stem 901 passes through the sealing cover 12. The fixing plate 6 is arranged on the side close to the air inlet 2, and the connecting sleeve 8 is arranged on the side close to the air outlet 3. A gap is left between the connecting sleeve 8 and the inner wall of the negative pressure control valve 1, and a second screw groove 14 is provided at both ends of the connecting piece 13. The two ends of the hose 17 are respectively threadedly connected to the corresponding connecting pieces 13. A first screw groove 4 is provided on the inner wall of the negative pressure control valve 1, and the air outlet 3 is provided. A mounting plate 15 is fixed on the outer wall of the negative pressure control valve 1, and a plurality of mounting holes 16 are provided in the mounting plate 15.

[0025] The effect achieved by the entire embodiment 2 is that, through the setting of the valve stem 901, the controller 904, the valve hole 902, the valve core 903 and the connecting sleeve 8, when it is necessary to control the intensity of the negative pressure, it is only necessary to control the valve stem 901 to rise and fall through the controller 904, so that the valve stem 901 drives the two valve cores 903 to rise and fall. At this time, the distance between the valve core 903 and the valve hole 902 will increase or decrease during the rise and fall, thereby controlling the intensity of the gas flowing in the negative pressure valve 1, thereby achieving the effect of controlling the negative pressure. Through the setting of the connecting piece 13, on the one hand, the device can install and remove the hose 17 at any time, which is convenient for maintenance and replacement. On the other hand, it can be connected to the external drainage tank through the connecting piece 13 connected to the other end of the hose 17, which is more convenient to use.

[0026] Working principle: When the device is in use, the connector 13 at one end of the hose 17 away from the negative pressure control valve 1 is connected and fixed to the external drainage tank, and is connected to the external negative pressure device through the first screw groove 4 or the mounting plate 15 and the mounting hole 16 according to the actual situation. At this time, the negative pressure device extracts gas to make the pressure in the external drainage tank negative. When the intensity of the negative pressure needs to be controlled, it is only necessary to control the valve stem 901 to rise and fall through the controller 904, so that the valve stem 901 drives the two valve cores 903 to rise and fall. At this time, the distance between the valve core 903 and the valve hole 902 will increase or decrease when the valve core 903 rises and falls, and the gas will flow through this enlarged and reduced gap to achieve the effect of controlling the negative pressure.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A negative pressure control device for an open wound, comprising a negative pressure control valve (1), characterized in that: The negative pressure control valve (1) is provided with an air inlet (2) and an air outlet (3) on both sides thereof, a control tube (5) is fixed to the top of the outer wall of the negative pressure control valve (1), a fixing plate (6) is fixed to the negative pressure control valve (1), a connecting hole (7) is provided in the fixing plate (6), a connecting sleeve (8) matching the connecting hole (7) is fixed to one end of the fixing plate (6), a pressure control structure (9) for controlling the negative pressure of the negative pressure control valve (1) is provided in the connecting sleeve (8), a hose (17) is provided on one side of the negative pressure control valve (1), and connecting pieces (13) are provided at both ends of the hose (17), one of the connecting pieces (13) being threadedly connected to one end of the negative pressure control valve (1).

2. A negative pressure control device for open wounds according to claim 1, characterized in that: The pressure control structure (9) comprises a control tube (5) and a valve stem (901) provided in the negative pressure control valve (1); the bottom end of the valve stem (901) passes through the connecting sleeve (8); two valve cores (903) are fixed on the outer wall of the valve stem (901); valve holes (902) matching the valve cores (903) are provided at both ends of the outer wall of the connecting sleeve (8); the top end of the valve stem (901) passes through the control tube (5) and is installed with a controller (904).

3. A negative pressure control device for open wounds according to claim 2, characterized in that: A valve seat (10) is fixed to the bottom end of the outer wall of the negative pressure control valve (1), and the bottom end of the valve stem (901) is arranged in the valve seat (10).

4. The negative pressure control device for open wounds according to claim 2, characterized in that: A packing (11) is provided inside the control tube (5) and outside the valve stem (901). A sealing cover (12) is fixed to the top end of the control tube (5), and the top end of the valve stem (901) passes through the sealing cover (12).

5. The negative pressure control device for open wounds according to claim 1, characterized in that: The fixing plate (6) is arranged on a side close to the air inlet (2), and the connecting sleeve (8) is arranged on a side close to the air outlet (3), with a gap being left between the connecting sleeve (8) and the inner wall of the negative pressure control valve (1).

6. The negative pressure control device for open wounds according to claim 1, characterized in that: Both ends of the connecting piece (13) are provided with a second screw groove (14), and both ends of the hose (17) are respectively threadedly connected to the corresponding connecting piece (13).

7. The negative pressure control device for open wounds according to claim 1, characterized in that: A first screw groove (4) is provided on the inner wall of the negative pressure control valve (1) and located inside the air outlet (3); a mounting plate (15) is fixed on the outer wall of the negative pressure control valve (1) and located outside the air outlet (3); and a plurality of mounting holes (16) are provided in the mounting plate (15).

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