Portable pressure-adjustable negative pressure drainage device

Abstract

A portable pressure-adjustable negative pressure drainage device comprises a pressure adjusting device, a liquid collecting bottle body, an infusion hose, a probe, an air inlet pipe, an exhaust pipe and a liquid collecting bottle cap. An infusion hose connector and an air inlet pipe connector are fixed to the top face or the side wall of the liquid collecting bottle cap, the lower end of the liquid collecting bottle cap is in threaded connection with the liquid collecting bottle body, and a dial gauge is arranged on the liquid collecting bottle body. One end, away from the liquid collection bottle cap, of the infusion hose connector is connected with the probe through an infusion hose; the end, away from the liquid collecting bottle cap, of the air inlet pipe connector is connected with an injection nozzle of the pressure adjusting device through an air inlet pipe. The infusion hose is fixedly provided with a non-return device and a flow adjusting device, and the flow adjusting device is located between the probe and the non-return device. The pressure adjusting device adopted by the utility model can be separated from the liquid collecting bottle for repeated use, and is simple and convenient to operate; the bottle body and the bottle cap of the liquid collecting bottle are meshed and connected together through threads and can be replaced, and the liquid collecting bottle is convenient to replace, small in size, light in weight and portable.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, and more specifically, relates to a portable negative pressure drainage device with adjustable pressure. Background Art

[0002] Fat liquefaction often occurs in pregnant women who have undergone cesarean sections. If this liquefied fat accumulates in the wound, it will lead to the nourishment and reproduction of bacteria, causing inflammatory reactions in the wound and even causing abscesses in the wound. The secretion of hormones in pregnant women during pregnancy will promote the accumulation of subcutaneous fat, which will lead to the thickening of the fat layer on the belly of pregnant women; therefore, after a cesarean section, parturients will have fat liquefaction problems due to the use of electric knives. In order to prevent problems such as wound inflammation caused by fat liquefaction, various drainage devices have begun to appear in China, the most important of which is a negative pressure drainage device. For example, CN202121851640.5, announced on January 21, 2022, discloses such a negative pressure drainage ball-type infusion-type abdominal drainage device in the utility model patent specification from China. The utility model improves the effect of uniform local drainage through multi-channel access, but the device is large in size, poor in portability and high in cost. In order to solve the problem of large size and poor portability, disposable drainage devices have appeared on the market. Such devices generally use a plastic structure that can be deformed. When the deformation is restored, the pressure difference between the inside of the device and the drainage area is used to draw out the fat. However, when using this device, the pressure in the negative pressure device will gradually decrease as the degree of deformation decreases, resulting in insufficient suction of the drainage device and the inability to completely suck out the liquid fat. And when the liquid collection area is full, the user can only replace the new drainage device, which is troublesome to operate and will cause secondary damage to the mother.

[0003] Therefore, it is necessary to design a device with low cost, high portability, stable pressure and the ability to replace the liquid collecting part. Utility Model Content

[0004] 1. Problem to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a portable and pressure-adjustable negative pressure drainage device to solve the problems of poor portability and gradually decreasing suction force of the drainage device when a parturient undergoes liquid fat drainage, and at the same time solve the problem that the portable negative pressure drainage device cannot replace the liquid collection bottle.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A portable pressure-adjustable negative pressure drainage device comprises a pressure regulating device, a liquid collecting bottle body, an infusion hose, a probe, an air inlet pipe, an air outlet pipe and a liquid collecting bottle cap;

[0009] The top surface or side wall of the liquid collecting bottle cap is fixed with a liquid infusion hose interface and an air inlet pipe interface, the lower end of the liquid collecting bottle cap is threadedly connected to the liquid collecting bottle body, and the liquid collecting bottle body is provided with a scale;

[0010] The end of the infusion hose interface away from the bottle cap of the liquid collection bottle is connected to the probe through the infusion hose;

[0011] One end of the air inlet pipe interface away from the cap of the liquid collecting bottle is connected to an injection nozzle of the pressure regulating device through the air inlet pipe;

[0012] The infusion hose is fixedly mounted with a backstop and a flow regulating device, and the flow regulating device is located between the probe and the backstop.

[0013] Furthermore, a sealing ring is installed at the contact position between the top of the bottle mouth of the liquid collecting bottle body and the bottle cap of the liquid collecting bottle.

[0014] Furthermore, when the air inlet pipe interface is located on the side wall of the liquid collecting bottle cap, the air inlet pipe interface divides the internal thread of the liquid collecting bottle cap into two sections, and there is a gap between the upper and lower internal threads. A through hole is fixed in the area where the external thread of the liquid collecting bottle body is located. When the liquid collecting bottle cap and the liquid collecting bottle body are tightened, the air inlet pipe interface is connected with the through hole through the gap.

[0015] Furthermore, the overall size of the liquid collecting bottle formed by the liquid collecting bottle body and the liquid collecting bottle cap is larger than the size of the pressure regulating device.

[0016] Furthermore, a positioning seat is fixedly connected to the top of the inner part of the bottle cap of the liquid collecting bottle, which is used to position the pressure regulating device.

[0017] Furthermore, the inner wall of the positioning seat is provided with a triangular protrusion that engages with the baffle of the positioning pressure regulating device.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) The pressure regulating device, the body of the liquid collecting bottle and the cap of the liquid collecting bottle of the utility model are used separately. Such a design can ensure that when the drainage device is used for drainage, the pressure is not likely to gradually decrease, resulting in incomplete drainage of liquid fat; the body of the liquid collecting bottle and the cap of the liquid collecting bottle are connected to the probe through an infusion hose, and a backstop is fixedly designed on the infusion hose to prevent the backflow of liquid fat; the backstop is movably provided with a flow regulating device in the direction of the probe to adjust the drainage speed of the drainage device.

[0021] (2) The body and the cap of the liquid collecting bottle of the utility model are connected together by means of a threaded engagement, so that the body and the cap of the liquid collecting bottle can be used separately. A sealing ring is installed at the top of the mouth of the liquid collecting bottle where the cap of the liquid collecting bottle contacts, so as to ensure the airtightness of the liquid collecting bottle and prevent the pressure regulating device from failing to regulate the internal pressure of the liquid collecting bottle.

[0022] (3) The air inlet pipe interface of the utility model can be set on the side of the liquid collecting bottle cap, and the air inlet pipe interface passes through the inside of the liquid collecting bottle cap. The air inlet pipe interface divides the internal thread on the liquid collecting bottle cap into two sections, upper and lower, and leaves a gap between the upper internal thread and the lower internal thread. The through hole is located in the gap between the internal threads of the liquid collecting bottle cap. In this way, after the liquid collecting bottle body and the liquid collecting bottle cap are tightened, no matter whether the position of the through hole is connected to the air inlet pipe interface or not, they can be connected through the gap, and then the pressure regulating device can regulate the pressure inside the liquid collecting bottle.

[0023] (4) The air inlet pipe of the utility model can be clipped inside the air inlet pipe interface, or can be clipped to the position where the infusion hose interface is connected to the inside of the liquid collecting bottle cap. In this way, when in use, the air inlet pipe can be clipped to the air inlet pipe interface, and the pressure regulating device can be connected to the liquid collecting bottle through the air inlet pipe, so as to regulate the pressure in the liquid collecting bottle. When cleaning, the air inlet pipe is clipped to the position where the infusion hose interface is connected to the liquid collecting bottle cap, and the cleaning liquid is guided from the probe into the infusion hose and the check valve through the pressure regulating device, and the cleaning is completed by multiple operations.

[0024] (5) The negative pressure drainage device of the utility model is made of visible plastic material, has a small size and light weight, and the pressure regulating device can be separated from the liquid collecting bottle and reused, and the replacement of the liquid collecting bottle is convenient and quick.

[0025] (6) The pressure regulating device of the utility model can be placed in the liquid collecting bottle as a whole through the positioning seat for portability and can be stored when not in use, thereby reducing the probability of loss of each structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the pressure regulating device of the utility model;

[0028] Figure 3 It is a schematic diagram of the structure of the liquid collecting bottle body and the liquid collecting bottle cap;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the device of the utility model;

[0030] Figure 5 For this utility model Figure 4Enlarged view of point A in the middle.

[0031] Description of the numbers in the figure:

[0032] 1. Liquid collecting bottle body, 2. Infusion hose interface, 3. Infusion hose, 4. Probe, 5. Air inlet pipe interface, 6. Air inlet pipe, 7. Exhaust pipe, 8. Pressure regulating device, 8.1. First injection nozzle, 8.2. Second injection nozzle, 8.3. Syringe barrel, 8.4. Piston head, 8.5. Push-pull rod, 8.6. Baffle, 8.7. Pull handle, 9. Scale, 10. Flow regulating device, 11. Liquid collecting bottle cap, 12. Backstop, 13. Through hole, 14. Positioning seat. DETAILED DESCRIPTION Specific embodiment one:

[0034] See also Figure 1-4 A portable pressure-adjustable negative pressure drainage device comprises a pressure regulating device 8, a liquid collecting bottle body 1, an infusion hose interface 2, an infusion hose 3, a probe 4, an air inlet pipe interface 5, an air inlet pipe 6, an air exhaust pipe 7, a scale 9, a flow regulating device 10, a liquid collecting bottle cap 11 and a check valve 12. The air inlet pipe interface 5 and the infusion hose interface 2 are fixed to the top surface of the liquid collecting bottle cap 11. The liquid collecting bottle body 1 is threadedly connected to the lower end of the liquid collecting bottle cap 11. The liquid collecting bottle body 1 is made of transparent plastic, and a scale 9 is provided on the liquid collecting bottle body 1. The user can clearly observe the height of the liquid level in the liquid collecting bottle body 1 when performing drainage operations, thereby providing data basis for subsequent treatment; one end of the air inlet pipe 6 is connected to the pressure regulating device 8, and the other end of the air inlet pipe 6 is sleeved on the air inlet pipe interface 5.

[0035] The infusion hose 3 is sleeved on the infusion hose interface 2 fixed on the top of the liquid collection bottle cap 11, and a check valve 12 and a flow regulating device 10 are installed on the infusion hose 3 to prevent the liquid fat from flowing back; the probe 4 is fixed on the end of the infusion hose 3 that is not connected to the infusion hose interface 2, and the flow regulating device 10 is located between the probe 4 and the check valve 12; during the drainage process, the flow rate of the drained liquid fat can be adjusted by turning the flow regulating device 10.

[0036] like Figure 2 As shown, the pressure regulating device 8 comprises a first injection nozzle 81, a second injection nozzle 82, a syringe barrel 83, a piston head 84, a push-pull rod 85, a baffle 86 and a pull-out handle 87. The two ends of the syringe barrel 83 are respectively provided with injection nozzles and baffles 86. The injection nozzles are respectively the first injection nozzle 81 and the second injection nozzle 82, and are respectively engaged with the air inlet pipe 6 and the exhaust pipe 7. The piston head 84 is slidably connected inside the syringe barrel 83; the push-pull rod 85 is fixed on the piston head 84, and a pull-out handle 87 is fixed at one end of the push-pull rod 85.

[0037] The inner diameter of the probe 4 shows a trend of gradually decreasing from one end connected to the infusion hose 3 to the other end, and the diameter of the part where the probe 4 enters the body is smaller. The top surface of the probe 4 is an inclined surface, which can reduce the pain felt by the parturient during use, and the outer surface of the part entering the body is provided with multiple through holes, which can prevent the situation in which only the liquid fat next to the hole on the top of the probe 4 is drained during the drainage of liquid fat.

[0038] A one-way exhaust device is provided at the end of the exhaust pipe 7 that is not connected to the second injection nozzle 82; a one-way air intake device is provided at the end of the air intake pipe 6 that is connected to the air intake pipe interface 5. Air can enter the syringe barrel 83 from the liquid collection bottle body 1 through the air intake pipe 6, and be discharged from the syringe barrel 83 from the exhaust pipe 7; thus, it is not easy for air to flow back into the liquid collection bottle body 1.

[0039] During the process of liquid fat drainage, the pressure in the negative pressure drainage device can be adjusted by the pressure regulating device 8. The specific principle of the adjustment process is as follows: pull the pull handle 87 on the pressure regulating device 8, the pull handle 87 drives the push-pull rod 85 and the piston head 84 to move in the direction of the baffle 86, so that a cavity is formed inside the syringe barrel 83; at this time, the pressure in the syringe barrel 83 is less than the pressure in the liquid collecting bottle body 1, forming a pressure difference; in order to balance the pressure, the air in the liquid collecting bottle body 1 enters the cavity in the syringe barrel 83 through the air inlet pipe interface 5 and the air inlet pipe 6, until the pressure in the combination of the liquid collecting bottle body 1, the air inlet pipe 6 and the pressure regulating device 8 forms a balanced state. In this process, the pressure in the liquid collecting bottle body 1 is less than the pressure before the pull handle 87 is pulled. In order to compensate for this part of the pressure loss in the liquid collecting bottle body 1, the liquid fat in the parturient body enters the liquid collecting bottle body 1 through the probe 4, the infusion hose 3 and the check valve 12.

[0040] like Figure 3As shown, the air inlet pipe interface 5 can also be set on the side of the liquid collecting bottle cap 11, and the air inlet pipe interface 5 is set on a different surface from the infusion hose interface 2 to reduce the probability of liquid entering the air inlet pipe interface 5 and ensure the use effect of the pressure regulating device 8. At this time, the internal thread on the liquid collecting bottle cap 11 is divided into upper and lower sections, and the threads on the outer periphery of the opening of the liquid collecting bottle body 1 are set accordingly, and there is a gap between the upper and lower internal threads. A through hole 13 is set on the liquid collecting bottle body 1. In the tightened state, the position of the air inlet pipe interface 5 in the liquid collecting bottle cap 11 and the position of the through hole 13 on the liquid collecting bottle body 1 are on the same horizontal line and are connected through the gap between the upper and lower threads. Furthermore, in order to prevent the leakage of liquid fat in the liquid collecting bottle body 1 due to the tilting of the combination of the liquid collecting bottle body 1 and the liquid collecting bottle cap 11, a sealing ring is provided between the liquid collecting bottle cap 11 and the liquid collecting bottle body 1, and when the liquid collecting bottle cap 11 and the liquid collecting bottle body 1 are rotated together, the gap is sealed both above and below to ensure that the gap is sealed except for the connection. Specific embodiment 2:

[0042] See also Figure 4-5 , which is different from the first embodiment in that the overall size of the liquid collecting bottle is larger than the size of the pressure regulating device 8, so that the pressure regulating device 8 can be installed in the liquid collecting bottle when not in use. A positioning seat 14 is fixedly connected to the top of the liquid collecting bottle cap 11, and the pressure regulating device 8 is installed on the liquid collecting bottle cap 11, so that it is not easy to move in the liquid collecting bottle. At the same time, the other end of the air inlet pipe 6 of the pressure regulating device 8 can be clamped from the inside of the liquid collecting bottle to the infusion hose interface 2 to prevent the air inlet pipe 6 from being too scattered inside the liquid collecting bottle.

[0043] The cross-sectional shape of the positioning seat 14 is an inverted L-shape, matching the baffle 86 and the pull-out handle 87 of the pressure regulating device 8, positioning the baffle 86 and the pull-out handle 87 (mainly the baffle 86), so as to fix the pressure regulating device 8 on the liquid collecting bottle cap 11. Specifically, a triangular protrusion is provided on the side of the positioning seat 14 close to the baffle 86 or the pull-out handle 87 for clamping and positioning.

[0044] It should be noted that the outside of the infusion hose interface 2 can be connected to the infusion hose 3, and the inside can be connected to the air inlet pipe 6. After use, the air inlet pipe 6 can be removed from the air inlet pipe interface 5 and connected to the opening of the infusion hose interface 2 in the bottle cap 11 of the liquid collection bottle, and then the probe 4 is immersed in the cleaning liquid, and the pull handle 87 is pulled to make the cleaning liquid pass through the probe 4, the check valve 12 and the infusion hose 3 and directly enter the syringe barrel 83; after multiple operations, the parts of the negative pressure drainage device that drain liquid fat are cleaned.

Claims

1. A portable and pressure-adjustable negative pressure drainage device, characterized in that: It comprises a pressure regulating device (8), a liquid collecting bottle body (1), an infusion hose (3), a probe (4), an air inlet pipe (6), an air outlet pipe (7) and a liquid collecting bottle cap (11); The top surface or side wall of the liquid collecting bottle cap (11) is fixed with an infusion hose interface (2) and an air inlet pipe interface (5); the lower end of the liquid collecting bottle cap (11) is threadedly connected to the liquid collecting bottle body (1); and a scale (9) is provided on the liquid collecting bottle body (1); One end of the infusion hose interface (2) away from the liquid collection bottle cap (11) is connected to the probe (4) via the infusion hose (3); One end of the air inlet pipe interface (5) away from the liquid collecting bottle cap (11) is connected to an injection nozzle of the pressure regulating device (8) through the air inlet pipe (6); The infusion hose (3) is fixedly mounted with a backstop (12) and a flow regulating device (10), and the flow regulating device (10) is located between the probe (4) and the backstop (12).

2. A portable pressure-adjustable negative pressure drainage device according to claim 1, characterized in that: A sealing ring is installed at the contact position between the top of the bottle mouth of the liquid collecting bottle body (1) and the liquid collecting bottle cap (11).

3. A portable pressure-adjustable negative pressure drainage device according to claim 1, characterized in that: When the air inlet pipe interface (5) is located on the side wall of the liquid collecting bottle cap (11), the air inlet pipe interface (5) divides the internal thread of the liquid collecting bottle cap (11) into two sections, upper and lower, and there is a gap between the upper and lower internal threads. A through hole (13) is fixed in the area where the external thread of the liquid collecting bottle body (1) is located. When the liquid collecting bottle cap (11) and the liquid collecting bottle body (1) are tightened, the air inlet pipe interface (5) is connected to the through hole (13) through the gap.

4. A portable pressure-adjustable negative pressure drainage device according to claim 1, characterized in that: The overall size of the liquid collecting bottle formed by the liquid collecting bottle body (1) and the liquid collecting bottle cap (11) is greater than the size of the pressure regulating device (8).

5. A portable pressure-adjustable negative pressure drainage device according to claim 4, characterized in that: A positioning seat (14) is fixedly connected to the top of the liquid collecting bottle cap (11) and is used to position the pressure regulating device (8).

6. A portable pressure-adjustable negative pressure drainage device according to claim 5, characterized in that: The inner wall of the positioning seat (14) is provided with a triangular protrusion which is engaged with a baffle (86) of the positioning pressure regulating device (8).

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