Constant-pressure urination system capable of automatically emptying liquid stored in pipeline

Abstract

The invention discloses a constant-pressure urination system capable of automatically emptying liquid stored in a pipeline. The constant-pressure urination system comprises a liquid drainage pipeline, a constant-pressure liquid drainage device and an automatic emptying device capable of automatically emptying the liquid stored in the whole liquid drainage pipeline or part of the liquid drainage pipeline, when the liquid discharging pipeline is in a residual liquid discharging state, the automatic emptying device is in a working state, the space occupied by liquid in the liquid discharging pipeline can be filled with air through the automatic emptying device, and therefore the liquid remaining in the liquid discharging pipeline or / and the constant-pressure liquid discharging device can be discharged by means of the gravity of the liquid remaining in the liquid discharging pipeline or / and the constant-pressure liquid discharging device. The constant-pressure liquid drainage device has the beneficial effects that liquid stored in the whole liquid drainage pipeline or part of the pipeline is automatically emptied after liquid drainage, it can be guaranteed that the pressure of the output end of the constant-pressure liquid drainage device is constant, and the stability and accuracy of constant-pressure liquid drainage of the constant-pressure liquid drainage device are guaranteed; the device can completely simulate the physiological urination function, is high in drainage speed, can take away sediments in the bladder, and achieves the effect of flushing the bladder.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a constant-pressure urination system capable of automatically emptying liquid stored in a pipeline. Background Art

[0002] An existing urination (drainage) system includes a constant pressure drainage device and a drainage container. The constant pressure drainage device has an input port and an output port. The input port is plugged with an input catheter, and the free end of the input catheter is used to connect with a urinary catheter. The output port is provided with an output catheter, and the other end of the output catheter is connected to the drainage container, such as the technical solution disclosed in announcement number CN111298283 A.

[0003] The defects of existing urination systems are: ① Slow drainage. In order to ensure accurate constant pressure, the existing constant pressure drainage device makes the drainage container and the constant pressure drainage device as close as possible for assembly and use. Therefore, the drainage speed during drainage is mainly related to the bladder pressure. In this way, since the difference between the set pressure and the opening pressure is small, when the drainage threshold is just reached, the discharge pressure difference is small and the drainage speed is slow. In addition, as the urine decreases, the pressure decreases accordingly, and the drainage speed will become slower and slower. ② The drainage opening control pressure is inaccurate. After drainage, liquid will accumulate in the drainage pipelines such as the input duct / output duct, and the constant pressure drainage device will be affected by the suction pressure of the liquid stored in the pipeline, which will seriously affect the accuracy of the self-starting pressure. ③ Urine residue in the bladder, incomplete drainage. Because there is no other assistance, as the bladder pressure decreases to a certain value, the drainage stops, resulting in incomplete drainage. After the drainage is completed, there is still urine residue, and the urine residue accumulates and precipitates; ④ The pressure self-starting system fails. The reason is that the opening pressure reaches the discharge threshold, and the discharge opening device reaches a slightly open state (i.e., a small or micro discharge state). If the bladder urine volume and the discharge urine volume are equal at this time, continuous "tick-tick" urination will be formed, which may cause this state for several hours or even the whole day, causing the pressure self-starting system to fail. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a constant pressure urination system with automatic emptying of the liquid stored in the pipeline.

[0005] The purpose of the present invention is achieved through the following technical solutions: A constant-pressure urination system with automatic emptying of liquid in a pipeline comprises a drainage pipeline and a constant-pressure drainage device arranged on the drainage pipeline, wherein the drainage pipeline comprises a first pipeline located at an input side of the constant-pressure drainage device and a second pipeline located at an output side of the constant-pressure drainage device, and the constant-pressure urination system has an automatic emptying device capable of automatically emptying liquid in the entire drainage pipeline or in part of the pipeline; the drainage pipeline comprises a liquid storage state, a normal drainage state, a residual liquid emptying state, When the liquid discharge pipeline is in a liquid storage state, the constant pressure liquid discharge device is in a closed state; When the liquid discharge pipeline is in a normal liquid discharge state, the constant pressure liquid discharge device is in an open state, and liquid flows freely from the liquid discharge pipeline and the constant pressure liquid discharge device; When the drainage pipeline is in a residual liquid discharge state, the automatic emptying device is in a working state. The automatic emptying device can fill the space occupied by the liquid in the drainage pipeline with air, and the residual liquid remaining in the drainage pipeline and / or the constant pressure drainage device is discharged by its own gravity.

[0006] Preferably, the automatic emptying device is a microhole arranged on the drainage pipeline to connect the inside and the outside thereof, or a connector connected to the drainage pipeline with a microhole connecting the inside and the outside thereof, or a drainage pipeline with a large inner diameter that does not leave any residual liquid after the drainage is completed, or an exhaust pipeline arranged on the drainage pipeline; the automatic emptying device does not affect the fullness of the drainage pipeline, and the continuity and / or smoothness of the drainage in a normal drainage state.

[0007] Preferably, the automatic emptying device is a micropore which is arranged on the outer shell of the drainage chamber of the constant pressure drainage device and connects its inner chamber with the outside. The micropore allows external air to enter under the condition of internal and external pressure difference, and the amount of air entering does not affect the continuity and / or smoothness of the drainage in the normal drainage state.

[0008] Preferably, an air filter membrane is provided on the outer shell of the drainage chamber of the constant pressure drainage device, which is in close contact with the periphery of the micropores to ensure that all the airflow entering the micropores passes through the micropore caps of the air filter membrane with equal area or partial area.

[0009] Preferably, the micropores are arranged on the shell of the constant-pressure liquid discharge device close to its input side and connect its liquid discharge cavity with the external environment.

[0010] Preferably, the pore size of the micropore is not greater than 2.5 mm. The pore size of the micropore is preferably between 0.5-1.5 mm. The pore size of the air filter membrane is not greater than 5 μm.

[0011] Alternatively, the automatic emptying device is a micro-discharge port located at the output end of the constant-pressure liquid discharge device and extends into the second pipeline.

[0012] The present invention also discloses a constant-pressure urination system with automatic emptying of liquid stored in a pipeline, comprising a drainage pipeline, a constant-pressure drainage device and a drainage container arranged on the drainage pipeline, wherein the constant-pressure drainage device or / and the drainage pipeline are provided with an automatic emptying device for automatically emptying liquid stored in the entire drainage pipeline or in part of the pipeline, The constant pressure liquid discharge device comprises a shell, an input chamber and a liquid discharge chamber are arranged in the shell, and the input chamber and the liquid discharge chamber can be closed and separated by a partition plate; The automatic emptying device is a micropore disposed on the outer shell of the drainage cavity of the constant pressure drainage device and connecting the inner cavity with the outside. The micropore allows external air to enter under the condition of internal and external pressure difference, and the amount of air entering does not affect the filling of the drainage pipeline and the continuity and / or smoothness of the drainage in the normal drainage state; The liquid discharge pipeline includes a liquid storage state, a normal liquid discharge state, and a residual liquid emptying state. When the liquid discharge pipeline is in a liquid storage state, the constant pressure liquid discharge device is in a closed state; When the liquid discharge pipeline is in a normal liquid discharge state, the constant pressure liquid discharge device is in an open state, and liquid flows freely from the liquid discharge pipeline and the constant pressure liquid discharge device; When the drainage pipeline is in a residual liquid discharge state, the residual liquid remaining in the drainage pipeline and / or the constant pressure drainage device generates negative pressure due to its own gravity, so that the microporous air intake fills the space occupied by the liquid in the drainage pipeline and discharges the residual liquid.

[0013] The beneficial effects of the present invention are mainly reflected in: 1. Automatically emptying the liquid in the entire discharge pipeline or part of the pipeline after discharge can ensure that the output end pressure of the constant pressure discharge device remains constant, and ensure the stability and accuracy of the constant pressure discharge of the constant pressure discharge device.

[0014] 2. It has the function of assisting and accelerating the drainage suction during constant pressure drainage, which can assist and accelerate the drainage even when the pressure difference is small, without dripping.

[0015] 3. It can completely simulate the physiological urination function, with a fast drainage speed, take away the sediment in the bladder and play the role of flushing the bladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solution of the present invention is further described below in conjunction with the accompanying drawings: Figure 1 : A schematic diagram of a first embodiment of a constant pressure urination system of the present invention; Figure 2 : A structural diagram of a constant pressure drainage device of a first embodiment of a constant pressure urination system of the present invention; Figure 3: A schematic diagram of the operation of the first embodiment of the constant pressure urination system of the present invention; Figure 4 : A schematic diagram of a second embodiment of a constant pressure urination system of the present invention; Figure 5 : A schematic diagram of a third embodiment of a constant pressure urination system of the present invention; Figure 6 : A schematic diagram of a fourth embodiment of a constant pressure urination system according to the present invention; Figure 7 : Schematic diagram of the fifth embodiment of the constant pressure urination system of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0018] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0019] like Figures 1 to 3 As shown, the present invention discloses a constant pressure urination system with automatic emptying of liquid stored in the pipeline, which includes a drainage pipeline, a constant pressure drainage device 1 and a drainage container 4 arranged on the drainage pipeline. The drainage pipeline includes a first pipeline 2 located at the input side of the constant pressure drainage device and a second pipeline 3 located at the output side of the constant pressure drainage device. Generally speaking, the first pipeline 2 is connected to a urinary catheter extending into the bladder, and the drainage container 4 is a drainage bag for storing urine.

[0020] The constant pressure liquid discharge device can adopt the constant pressure liquid discharge device of the prior art, or can adopt Figure 2The structure disclosed in the constant pressure liquid discharge device includes a shell 100, and an input chamber 101 and a liquid discharge chamber 102 are arranged in the shell 100. The input chamber 101 and the liquid discharge chamber 102 can be closed and separated by a partition plate 104, and can also be connected through a connection port 105. The connection port 105 is formed by moving the partition plate 104. The shell 100 includes an inlet and an outlet, which are respectively connected to the first pipeline 2 and the second pipeline 3.

[0021] In the first embodiment, the constant-pressure liquid discharge device is provided with an automatic emptying device for automatically emptying the liquid in the entire liquid discharge pipeline or a part of the pipeline. The automatic emptying device is a micropore 5 arranged on the outer shell of the liquid discharge cavity 102 of the constant-pressure liquid discharge device and connecting its inner cavity with the outside. The micropore 5 allows external air to enter under the condition of internal and external pressure difference, and the amount of air entering does not affect the fullness, liquid discharge continuity and / or smoothness of the liquid discharge pipeline. Furthermore, the micropore 5 is arranged on the outer shell of the constant-pressure liquid discharge device close to its input side and connects its liquid discharge cavity with the external environment. The aperture of the micropore is not greater than 2.5 mm, preferably between 0.5-1.5 mm.

[0022] The housing of the drainage chamber of the constant pressure drainage device is provided with an air filter membrane 7, which is in close contact with the periphery of the micropores, and a micropore cap 6 which ensures that the airflow entering the micropores passes through the air filter membrane of equal area or part of the area. The air filter membrane 7 is air permeable and water-impermeable, and the pore size of the air filter membrane 7 is not greater than 5um; the air intake speed can also be controlled by controlling the micropore cap 6.

[0023] The drainage pipeline includes a liquid storage state, a normal liquid drainage state, and a residual liquid emptying state: When the liquid discharge pipeline is in a liquid storage state, the constant pressure liquid discharge device 1 is in a closed state; When the pressure in the bladder reaches the threshold value set by the constant pressure liquid discharge device 1, the constant pressure liquid discharge device 1 is in an open state, and when the liquid discharge pipeline is in a normal liquid discharge state, liquid flows freely from the liquid discharge pipeline and the constant pressure liquid discharge device 1; When the drainage pipeline is in the residual liquid discharge state, refer to Figure 3 The micropores 5 allow air to enter, so that the space occupied by the liquid 20 in the drainage pipeline is filled with air, and the residual liquid remaining in the drainage pipeline and / or the constant pressure drainage device is discharged by its own gravity.

[0024] like Figure 4In the second embodiment shown, the drainage pipeline is provided with an automatic emptying device for automatically emptying the liquid stored in the entire drainage pipeline or part of the drainage pipeline. The automatic emptying device is a micro hole 5 provided on the drainage pipeline to connect the inside and outside thereof, and the automatic emptying device does not affect the fullness, drainage continuity and / or smoothness of the drainage pipeline during normal drainage. In the figure, the micro hole 5 is provided on the second pipeline 3, and of course it can also be provided on the first pipeline 2. Alternatively, the automatic emptying device is a connector connected to the drainage pipeline with the micro hole 5 connecting the inside and outside thereof, that is, it is attached to the drainage pipeline as an additional part, and the micro hole is one of the structures of the connector.

[0025] When the drainage pipeline is in a residual liquid discharge state, the micropores 5 located on the drainage pipeline are opened to allow air to enter, so that the space occupied by the liquid 20 in the drainage pipeline is filled with air, and the residual liquid remaining in the drainage pipeline and / or the constant pressure drainage device is discharged by its own gravity.

[0026] like Figure 5 In the third embodiment shown, the automatic emptying device is an exhaust pipe 8 arranged on the drainage pipeline, and the other end of the exhaust pipe 8 extends into the drainage container 4. The automatic emptying device does not affect the continuity and / or smoothness of the drainage in the normal drainage state. When the constant pressure drainage device 1 is in the open state and the drainage pipeline is in the normal drainage state, the liquid flow forms a negative pressure, and the upper opening of the side wall of the exhaust pipe 8 will be sucked so that a trace or a small amount of gas in the lower opening of the exhaust pipe 8 enters the exhaust pipe 8, and part of the air in the drainage container 4 is brought into the drainage pipe to form a cycle. When the drainage pipeline is in the residual liquid emptying state, the residual liquid in the drainage pipeline is negatively pressurized by gravity, and the gas continues to enter, so that the space occupied by the liquid 20 in the drainage pipeline is filled with air, and the residual liquid remaining in the drainage pipeline or / and the constant pressure drainage device is discharged.

[0027] like Figure 6 In the fourth embodiment shown, the second pipeline 3 is a thick pipe, that is, its diameter is larger than the diameter of the first pipeline 2. When the drainage pipeline is in the residual liquid discharge state, the gravity of the liquid 20 in the drainage pipeline is greater than the adsorption force of the pipe wall, and the liquid is completely discharged, because if the inner diameter of the pipeline is appropriately large, the drainage pipeline itself can be free of liquid accumulation.

[0028] like Figure 7 In the fifth embodiment shown, the automatic emptying device is a micro-discharge port 9 located at the output end of the constant pressure discharge device 1 and extending into the second pipeline 3. The flow of the micro-discharge port 9 is not enough to fill the entire discharge pipeline, and the pipeline may not store liquid.

[0029] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0030] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A constant-pressure urination system with automatic emptying of liquid stored in a pipeline, comprising a drainage pipeline and a constant-pressure drainage device (1) arranged on the drainage pipeline, wherein the drainage pipeline comprises a first pipeline (2) located at an input side of the constant-pressure drainage device and a second pipeline (3) located at an output side of the constant-pressure drainage device, characterized in that: The constant pressure urination system has an automatic emptying device that automatically empty the liquid stored in the entire drainage pipeline or part of the pipeline; the drainage pipeline includes a liquid storage state, a normal drainage state, and a residual liquid emptying state; When the liquid discharge pipeline is in a liquid storage state, the constant pressure liquid discharge device is in a closed state; When the liquid discharge pipeline is in a normal liquid discharge state, the constant pressure liquid discharge device is in an open state, and liquid flows freely from the liquid discharge pipeline and the constant pressure liquid discharge device; When the drainage pipeline is in a residual liquid discharge state, the automatic emptying device is in a working state, and the automatic emptying device can fill the space occupied by the liquid (20) in the drainage pipeline with air, and the residual liquid remaining in the drainage pipeline and / or the constant pressure drainage device is discharged by its own gravity.

2. A constant pressure urination system with automatic emptying of fluid in the pipeline according to claim 1, characterized in that: The automatic emptying device is a microhole (5) provided on the drainage pipeline and connecting the inside and the outside thereof, or a connector connected to the drainage pipeline and having a microhole (5) connecting the inside and the outside thereof, or a drainage pipeline with a large inner diameter that does not leave any residual liquid after drainage, or an exhaust pipe (8) provided on the drainage pipeline; the automatic emptying device does not affect the filling capacity of the drainage pipeline, and the continuity and / or smoothness of drainage in a normal drainage state.

3. A constant pressure urination system with automatic emptying of fluid in the pipeline according to claim 1, characterized in that: The automatic emptying device is a micropore (5) arranged on the outer shell of the drainage cavity of the constant pressure drainage device and connecting the inner cavity with the outside. The micropore (5) allows external air to enter when there is a pressure difference between the inside and the outside, and the amount of air entering does not affect the continuity and / or smoothness of the drainage in the normal drainage state.

4. A constant pressure urination system with automatic emptying of liquid in the pipeline according to claim 3, characterized in that: An air filter membrane (7) is provided on the outer shell of the liquid discharge chamber of the constant pressure liquid discharge device, and is in close contact with the periphery of the micropores to ensure that all airflow entering the micropores passes through the micropore cap (6) of the air filter membrane with an equal area or a partial area.

5. A constant pressure urination system with automatic emptying of fluid in the pipeline according to claim 3, characterized in that: The micropore (5) is arranged on the shell of the constant-pressure liquid discharge device close to its input side and connects its liquid discharge cavity with the external environment.

6. A constant pressure urination system with automatic emptying of liquid in the pipeline according to any one of claims 2 to 5, characterized in that: The pore diameter of the micropores is no greater than 2.5 mm.

7. A constant pressure urination system with automatic emptying of fluid in the pipeline according to claim 6, characterized in that: The pore size of the micropores is preferably between 0.5 and 1.5 mm.

8. A constant pressure urination system with automatic emptying of liquid in the pipeline according to any one of claims 2 to 5, characterized in that: The pore size of the air filter membrane (7) is no greater than 5 μm.

9. A constant pressure urination system with automatic emptying of fluid in the pipeline according to claim 1, characterized in that: The automatic emptying device is a micro-discharge port (9) located at the output end of the constant pressure discharge device (1) and extending into the second pipeline (3).

10. A constant-pressure urination system capable of automatically emptying the liquid stored in the pipeline, comprising a drainage pipeline, and a constant-pressure drainage device (1) and a drainage container (4) arranged on the drainage pipeline, characterized in that: The constant pressure liquid discharge device and / or the liquid discharge pipeline is provided with an automatic emptying device which automatically empty the liquid stored in the entire liquid discharge pipeline or part of the pipeline; The constant-pressure liquid discharge device comprises a housing (100), wherein an input chamber (101) and a liquid discharge chamber (102) are provided in the housing (100), and the input chamber (101) and the liquid discharge chamber (102) can be sealed and separated by a partition plate (104); The automatic emptying device is a micropore (5) arranged on the outer shell of the drainage chamber (102) of the constant pressure drainage device and connecting the inner chamber with the outside. The micropore (5) allows external air to enter when there is a pressure difference between the inside and outside. The amount of air entering does not affect the filling of the drainage pipeline and the continuity and / or smoothness of the drainage in the normal drainage state. The liquid discharge pipeline includes a liquid storage state, a normal liquid discharge state, and a residual liquid discharge state; When the liquid discharge pipeline is in a liquid storage state, the constant pressure liquid discharge device (1) is in a closed state; When the liquid discharge pipeline is in a normal liquid discharge state, the constant pressure liquid discharge device (1) is in an open state, and liquid flows freely through the liquid discharge pipeline and the constant pressure liquid discharge device (1); When the drainage pipeline is in a residual liquid discharge state, the residual liquid remaining in the drainage pipeline or / and the constant pressure drainage device generates negative pressure due to its own gravity, causing the micropores (5) to take in air to fill the space occupied by the liquid (20) in the drainage pipeline, thereby discharging the residual liquid.

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