CN220213537U - Urinary catheterization system - Google Patents

Abstract

The utility model discloses a catheterization system, including catheter, urine collection container and connecting catheter and urine collection container's connecting tube, connecting tube includes first pipeline and second pipeline, is provided with the siphon between first pipeline and the second pipeline, the siphon includes casing A and siphon, and casing A upper end is equipped with inlet A, and inlet A passes through first pipeline connection catheter, the siphon includes return bend and feed liquor pipe, and feed liquor pipe one end is in casing A inner chamber, and the other end is connected the return bend inlet, flows from inlet A into after the liquid that the casing A inner chamber got into the return bend from the feed liquor pipe, flows from the return bend liquid outlet outflow, finally flows into urine collection container through the second pipeline, and the utility model is discharged through the urine in the control bladder of siphon and is correlated with bladder internal pressure, and cyclic process is unanimous with human normal physiology urinary, avoids artificial control catheterization or continuous catheterization to the adverse effect that causes the bladder.

Description

Urinary catheterization system

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a catheterization system.

Background

Catheterization is a method for inserting a urinary catheter into a urinary bladder from the urethra to urinate, and is clinically conventional, and patients with urinary diseases and acute urinary retention often need catheterization, and sometimes patients with non-urinary diseases before and after large-scale operation also need catheterization.

At present, the methods of catheterization mainly comprise continuous catheterization (indwelling catheter), intermittent catheterization (indwelling catheter) and intermittent catheterization (non-indwelling catheter). The continuous urinary catheterization (indwelling catheter) is to keep the catheter in the patient body all the time, continuously guide urine out of the bladder, and periodically replace the catheter or pull out the catheter until the illness state is permitted; the difference between intermittent catheterization (indwelling catheter) and continuous catheterization (indwelling catheter) is that the catheterization pipeline switch is manually controlled to catheterize at intervals; intermittent catheterization (non-indwelling catheter) is to insert the catheter into the bladder at intervals, catheterize once, and pull out the catheter after the bladder is emptied.

When the urine is continuously catheterized, urine in the bladder is discharged from the body at any time, and the bladder is always in an empty state. At this time, the urinary bladder may curl together, and if the time is too long, the urinary bladder may be obviously contractured, urine may not be stored, so that the patient may urinate frequently, and it is difficult to reserve the urinary catheter again or replace the fistula. At the same time, the normal periodic urinary physiological phenomenon of bladder filling and emptying is disturbed, and thus, the nervous system disorder of urinary intention is caused. During a period of time after the patient removes the urinary catheter, the phenomena such as urinary failure, urinary incontinence and the like often occur due to the disorder of the urinary nervous system. Thus, it is necessary to urinate once at intervals to maintain the bladder volume, avoiding bladder contractures and urinary nervous system disorders. However, intermittent catheterization is performed by manually controlling the pipeline switch of the catheterization system, so that the problems of contracture of the bladder and disorder of the urinary nervous system can be solved, but if a patient is inconvenient to operate the urination system or is unaided, urine leakage or bladder damage can occur.

The current urethral catheterization device is generally composed of a urinary catheter and a urine bag, one end of the urinary catheter is inserted into the urinary bladder through the urethra, the other end of the urinary catheter is connected with the urine bag (or a urine bottle) through a connecting catheter, and a buckle is arranged on the connecting catheter to clamp the connecting catheter so as to control the opening of the urethral catheterization device and regulate and control the flow of urine. The clamping buckles are provided with clamping gaps with unequal widths, when the connecting guide pipe is positioned at the large gap side of the clamping gaps, the connecting guide pipe is smooth and free from deformation, and moves from the large gap side to the small gap side, the connecting guide pipe deforms until the inner wall is attached, and the connecting guide pipe is closed. The switch of the urethral catheterization device is regulated by adopting the buckle, the control is needed by people, the connection with urination physiology of a user cannot be established, and urination overfrequency or too little can have adverse effect on the bladder to affect the bladder function.

Disclosure of Invention

The utility model aims to solve the problem that the normal periodic urinary physiological phenomenon of bladder filling and emptying cannot be automatically realized in the prior art. The utility model provides a urinary catheterization system which can be physiologically associated with urination of a user, so that the urinary catheterization is similar to normal physiological urination, and adverse effects on the bladder caused by artificial control are avoided.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows:

the catheterization system comprises a catheter, a urine collection container and a connecting catheter for connecting the catheter and the urine collection container, wherein the connecting catheter comprises a first pipeline and a second pipeline, a siphon is arranged between the first pipeline and the second pipeline and comprises a shell A and a siphon pipe, the upper end of the shell A is provided with a liquid inlet A, the liquid inlet A is connected with the catheter through the first pipeline, the siphon pipe comprises an upper bent pipe, the liquid inlet end of the upper bent pipe is communicated with the inner cavity of the shell A, and after liquid flowing into the inner cavity of the shell A enters the upper bent pipe, the liquid flows out from the liquid outlet of the upper bent pipe and finally flows into the urine collection container through the second pipeline.

The liquid inlet end of the upper elbow is connected with a liquid inlet pipe, one end of the liquid inlet pipe is arranged in the inner cavity of the shell A, and the other end of the liquid inlet pipe is connected with the upper elbow.

As a preferred mode, the upper end of the shell A is also provided with a liquid inlet C, the lower end of the shell A is provided with a liquid outlet A, the liquid outlet end of the upper bent pipe is connected with the liquid inlet C, and the liquid inlet C is communicated with the liquid outlet A.

Further, the longitudinal space of the inner cavity of the shell A is divided into a first inner cavity and a second inner cavity, the upper end of the first inner cavity is provided with a liquid inlet A, the lower end of the second inner cavity is provided with a liquid outlet A, the lower end of a liquid inlet pipe of the siphon pipe is arranged in the first inner cavity, the liquid inlet of the upper elbow pipe is connected with the upper end of the liquid inlet pipe, the liquid outlet of the upper elbow pipe is connected with a liquid inlet C, and the liquid inlet C is communicated with the second inner cavity. The first inner cavity is communicated with an air inlet provided with a one-way valve.

More preferably, the lower end of the liquid inlet pipe is connected with a pressurizing mechanism, the pressurizing mechanism comprises a shell B and a weight in the inner cavity of the shell B, the upper end and the lower end of the shell B are respectively provided with a liquid outlet B and a liquid inlet B, the liquid outlet B is connected with the liquid inlet pipe, the weight is arranged at the liquid inlet B, and the liquid inlet B is closed or opened by the weight.

More preferably, a sealing element is arranged below the weight, and the weight closes or opens the liquid inlet B through the sealing element.

Further, the lower end of a liquid inlet pipe of the siphon pipe is arranged in the inner cavity of the shell A, and the lower end of a liquid inlet C is connected with the liquid outlet A through a connecting pipe. The inner cavity of the shell A is communicated with an air inlet provided with a one-way valve.

The shell A comprises an upper shell and a lower shell, the liquid inlet A is formed in the upper end of the upper shell, and the liquid outlet A is formed in the lower end of the lower shell.

As a preferred mode, the liquid outlet of the upper bent pipe is directly connected with the second pipeline.

The urine collecting container is a urine bag made of an elastomer; or a urine bottle/bag made of hard material, and provided with an air inlet pipe communicated with the atmosphere.

The beneficial effects of the utility model are as follows: this application catheterization system sets up the siphon ware on the connecting catheter between catheter and collection urine bag, and as the urine is accumulated gradually, the bladder fills gradually, and pressure increases gradually, when pressure reaches the pressure that the siphon ware set for, the urination system can open automatically, until urine evacuation in bladder and the catheterization system, the bladder will get into next filling, the physiological cycle circulation of evacuation. The siphon device is used for controlling the urine discharge in the bladder, the urine discharge is related to the pressure in the bladder and the pressure setting of the siphon device, and is related to the urination physiology of a user, so that the adverse effect on the bladder caused by manual control is avoided. The system can be applied to different bladder pressures, and the pressure setting of the siphon can be adjusted to be equal to the bladder pressure of a user (the bladder pressure can stimulate the nerves of the urinary system to generate urine meaning). The normal physiological cycle of bladder filling and emptying can be easily realized through the system.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic diagram of a urinary catheterization system.

FIG. 2 is a schematic diagram of a first siphon structure.

FIG. 3 is a schematic diagram of a second siphon structure.

FIG. 4 is a schematic diagram of a third siphon structure.

Fig. 5 is a top view of housing a.

Fig. 6 is a schematic view of another urinary catheterization system.

FIG. 7 is a schematic diagram of a fourth siphon structure.

FIG. 8 is a schematic diagram of a fifth siphon structure.

In the figure: 1 catheter, 2 connecting catheter, 21 first pipeline, 22 second pipeline, 3 siphon, 31 shell A,311 upper shell, 312 lower shell, 321 inlet A,322 inlet C,33 outlet A,34 first inner chamber, 35 second inner chamber, 36 siphon, 361 inlet pipe, 362 upper elbow, 37 booster mechanism, 371 shell B,372 outlet B,373 inlet B,374 weight, 375 sealing element, 38 connecting pipe, 39 check valve, 4 urine collecting container, 41 intake pipe, 5 bladder.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1

The utility model relates to a urethral catheterization system, as shown in fig. 1, which comprises a urethral catheter 1, a urine collection container 4 and a connecting catheter 2 for connecting the urethral catheter 1 and the urine collection container 4, wherein the connecting catheter 2 comprises a first pipeline 21 and a second pipeline 22, a siphon 3 is arranged between the first pipeline 21 and the second pipeline 22, the siphon 3 comprises a shell A31 and a siphon pipe 36, the upper end of the shell A31 is provided with a liquid inlet A321, the liquid inlet A321 is connected with the urethral catheter 1 through the first pipeline 21, the siphon pipe 36 comprises an upper elbow 362, the liquid inlet end of the upper elbow 362 is communicated with the inner cavity of the shell A31, and after the liquid flowing into the inner cavity of the shell A31 enters the upper elbow 362, the liquid flows out from the liquid outlet of the upper elbow 362 and finally flows into the urine collection container 4 through the second pipeline 22. Urine in the bladder 5 enters the siphon 3, and can be discharged after the pressure of the urine in the bladder 5 can overcome the resistance of the siphon 3, so that the urine discharge is related to the pressure in the bladder 5, the urine guiding system automatically discharges urine according to the pressure of the urine in the bladder 5, and the urine guiding system is related to the urination physiology of a user, thereby avoiding the adverse effect on the bladder 5 caused by manual control.

In this embodiment, as shown in fig. 2 and 5, the structure of the siphon 3 is that the siphon 3 includes a housing a31 and a siphon tube 36, the siphon tube 36 includes an upper elbow 362, a liquid inlet end of the upper elbow 362 is connected to a liquid inlet pipe 361, one end of the liquid inlet pipe 361 is in an inner cavity of the housing a31, and the other end is connected to the upper elbow 362. The upper end of the shell A31 is also provided with a liquid inlet C322, the lower end of the shell A31 is provided with a liquid outlet A33, the liquid outlet end of the upper elbow 362 is connected with the liquid inlet C322, and the liquid inlet C322 is communicated with the liquid outlet A33. The longitudinal space of the inner cavity of the shell A31 is a first inner cavity 34 and a second inner cavity 35, the first inner cavity 34 and the second inner cavity 35 are independent, the upper end of the first inner cavity 34 is provided with a liquid inlet A321, the upper end of the second inner cavity 35 is provided with a liquid inlet C322, the lower end of the second inner cavity 35 is provided with a liquid outlet A33, the lower end of a liquid inlet pipe 361 of a siphon 36 is arranged in the first inner cavity 34, one end of an upper elbow 362 is connected with the upper end of the liquid inlet pipe 361, the other end of the upper elbow is connected with the liquid inlet C322, and the liquid inlet C322 is communicated with the second inner cavity 35; the first cavity 34 communicates with an air inlet provided with a one-way valve 39.

In order to facilitate the processing of the housing A31 of the siphon 3 and the installation of the internal components, the housing A31 includes an upper shell 311 and a lower shell 312. The liquid inlet A321 and the liquid inlet C322 are both arranged at the upper end of the upper shell 311, and the liquid outlet A33 is arranged at the lower end of the lower shell 312.

The urine collecting container 4 is a urine bag made of an elastic body, and the urine bag made of the elastic body can expand along with urine entering, so that the urine can flow smoothly. The urine collection vessel 4 may also be a urine bottle/bag made of hard material, provided with an air inlet pipe 41 communicating with the atmosphere.

The working principle and the working process of the urethral catheterization system are as follows:

(1) Urine in the bladder 5 flows into the first inner cavity 34 from the liquid inlet A321 through the catheter 1 and the first pipeline 21, gas is discharged through the siphon tube 36 and the liquid outlet A33, the air can enter the first inner cavity 34 through the air inlet and the one-way valve 39, and the gas in the first inner cavity 34 cannot reversely pass through.

(2) As the liquid entering the first lumen 34 increases, the liquid enters the upper elbow 362, the upper elbow 362 is higher than the inlet a321, and as the liquid increases, pressure (or pressure) is generated, the height of the upper elbow 362 determines the pressure within the first lumen 34 or bladder 5.

(3) When the liquid passes over the highest point of the upper elbow 362, the liquid exceeding the highest point breaks the original force balance due to gravity, and a stable liquid flow starts to form.

(4) When there is no fluid in the bladder 5, a negative pressure will be created in the first lumen 34, bladder 5 due to the force of gravity of the fluid in the second conduit 22. The negative pressure will open the one-way valve 39 communicating with the first lumen 34, at which time the pressure in the first lumen 34 and bladder 5 will become atmospheric pressure, and the liquid in the tubing will flow out of the drain hole under the action of gravity (siphon effect), and the whole system will be atmospheric pressure. At this point the check valve 39 closes and the system proceeds to the next cycle.

Example 2

The difference between this embodiment and embodiment 1 is that the structure of the siphon 3 is different, as shown in fig. 3 and 5, the siphon 3 includes a housing a31 and a siphon 36, the siphon 36 includes an upper elbow 362 and a liquid inlet pipe 361, the longitudinal space between the inner cavities of the housing a31 is a first inner cavity 34 and a second inner cavity 35, the first inner cavity 34 and the second inner cavity 35 are independent, the upper end of the first inner cavity 34 is provided with a liquid inlet a321, the upper end of the second inner cavity 35 is provided with a liquid inlet C322, the lower end is provided with a liquid outlet a33, the lower end of the liquid inlet pipe 361 of the siphon 36 is arranged in the first inner cavity 34, one end of the upper elbow 362 is connected with the upper end of the liquid inlet pipe 361, the other end is connected with the liquid inlet C322, and the liquid inlet C322 is communicated with the second inner cavity 35; the first cavity 34 communicates with an air inlet provided with a one-way valve 39. The lower end of the liquid inlet pipe 361 is connected with the pressurizing mechanism 37, the pressurizing mechanism 37 comprises a shell B371 and a weight 374 in the inner cavity of the shell B371, the upper end and the lower end of the shell B371 are respectively provided with a liquid outlet B372 and a liquid inlet B373, the liquid outlet B372 is connected with the liquid inlet pipe 361, the weight 374 is arranged at the liquid inlet B373, and the liquid inlet B373 is closed or opened through the weight 374. A seal 375 may also be provided below the weight 374, the weight 374 closing or opening the inlet B373 with the seal 375. When the upward force of the liquid entering the first inner chamber 34 is greater than the downward force of the weight 374, the weight 374 moves upward, the liquid inlet B373 opens, or when the liquid in the first inner chamber 34 can overcome the downward pressure of the weight 374 applied to the seal 375, the seal 375 opens, and the liquid flows from the liquid inlet B373 into the inner chamber of the housing B371 and further from the liquid inlet pipe 361 into the upper elbow 362.

The maximum pressure of bladder 5 in example 1 depends on the height of upper elbow 362, while the maximum pressure of bladder 5 in this example depends on the sum of the weight 374 weight and the pressure generated by the height of upper elbow 362. The height of the upper elbow 362 may be reduced by the pressurization mechanism 37.

Example 3

Referring to fig. 4 and 5 for the structure of the siphon 3 in this embodiment, the siphon 3 includes a housing a31 and a siphon tube 36, the siphon tube 36 includes an upper elbow 362 and a liquid inlet pipe 361, the lower end of the liquid inlet pipe 361 of the siphon tube 36 is disposed in the inner cavity of the housing a31, one end of the upper elbow 362 is connected with the upper end of the liquid inlet pipe 361, the other end is connected with the upper end of the liquid inlet C322, and the lower end of the liquid inlet C322 is connected with the liquid outlet a33 via a connecting pipe 38; the inner cavity of the shell A31 is communicated with an air inlet provided with a one-way valve 39. The difference between the present embodiment and embodiment 1 is that the inner cavity of the housing a31 is not divided, the second inner cavity 35 in embodiment 1 is replaced by the connecting pipe 38, and the structure of the housing a31 can be simplified by adopting the scheme of the connecting pipe 38, which is convenient for processing and manufacturing and reduces the cost.

In this embodiment, the pressurizing mechanism 37 may be connected to the lower end of the liquid inlet pipe 361, where the pressurizing mechanism 37 includes a housing B371 and a weight 374 in the inner cavity of the housing B371, the upper and lower ends of the housing B371 are respectively provided with a liquid outlet B372 and a liquid inlet B373, the liquid outlet B372 is connected to the liquid inlet pipe 361, a sealing member 375 is provided at the liquid inlet B373, and the weight 374 controls the sealing member 375 to close or open the liquid inlet B373. To shorten the height of the upper elbow 362.

Example 4

Referring to fig. 6, the urethral catheterization system of this embodiment includes a urinary catheter 1, a urine collection container 4 and a connection catheter 2 for connecting the urinary catheter 1 and the urine collection container 4, the connection catheter 2 includes a first pipeline 21 and a second pipeline 22, a siphon 3 is disposed between the first pipeline 21 and the second pipeline 22, the siphon 3 includes a housing a31 and a siphon 36, a liquid inlet a321 is disposed at an upper end of the housing a31, the liquid inlet a321 is connected with the urinary catheter 1 through the first pipeline 21, the siphon 36 includes an upper elbow 362, a liquid inlet end of the upper elbow 362 is communicated with an inner cavity of the housing a31, and after the liquid flowing into the inner cavity of the housing a31 enters the upper elbow 362, the liquid flows out from a liquid outlet of the upper elbow 362, and finally flows into the urine collection container 4 through the second pipeline 22. Unlike embodiment 1, embodiment 2 and embodiment 3, the siphon 3 has no inlet C322 on the casing a31, but the outlet of the upper elbow 362 is directly connected to the second pipe 22. The structure of the siphon 3 is as shown in fig. 7, the siphon 3 comprises a shell A31 and a siphon tube 36, the siphon tube 36 comprises an upper bent tube 362 and a liquid inlet tube 361, the lower end of the liquid inlet tube 361 of the siphon tube 36 is arranged in the inner cavity of the shell A31, one end of the upper bent tube 362 is connected with the upper end of the liquid inlet tube 361, the other end is connected with the second pipeline 22, and the inner cavity of the shell A31 is communicated with an air inlet provided with a one-way valve 39. The housing A31 of the siphon 3 in this embodiment is simpler in structure.

The siphon 3 may also adopt a structure as shown in fig. 8, the lower end of the liquid inlet pipe 361 is connected with a pressurizing mechanism 37, the pressurizing mechanism 37 includes a housing B371 and a weight 374 in the inner cavity of the housing B371, the upper and lower ends of the housing B371 are respectively provided with a liquid outlet B372 and a liquid inlet B373, the liquid outlet B372 is connected with the liquid inlet pipe 361, the weight 374 is disposed at the liquid inlet B373, and the liquid inlet B373 is closed or opened by the weight 374. A seal 375 may also be provided below the weight 374, the weight 374 closing or opening the inlet B373 with the seal 375. When the upward force of the liquid entering the inner cavity of the shell a31 is larger than the downward force of the weight 374, the weight 374 moves upward, or when the liquid in the inner cavity of the shell a31 can overcome the downward pressure of the weight 374 applied to the sealing member 375, the sealing member 375 is opened, the liquid flows into the inner cavity of the shell B371 from the liquid inlet B373, and then flows into the upper elbow 362 from the liquid inlet pipe 361.

In order to facilitate the processing of the shell A31 of the siphon device 3 and the installation of the internal components, the shell A31 comprises an upper shell 311 and a lower shell 312, and a liquid inlet A321 is arranged on the upper shell 311.

According to the utility model, the siphon 3 is introduced into the traditional urethral catheterization system, the discharge of urine is controlled through the siphon 3, the height of the bent pipe 362 on the siphon 36 (or the height of the bent pipe 362 on the siphon 36 plus the weight 374) is designed according to the pressure in the bladder 5 during normal physiological urination, so that the urethral catheterization system automatically urinates according to the urine pressure of the bladder 5, and is associated with the urination physiology of a user, thereby avoiding the adverse effect on the bladder 5 caused by manual control and simultaneously reducing the labor intensity of nursing work.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. The catheterization system comprises a catheter, a urine collection container and a connecting catheter for connecting the catheter and the urine collection container, and is characterized in that: the connecting catheter comprises a first pipeline and a second pipeline, a siphon is arranged between the first pipeline and the second pipeline, the siphon comprises a shell A and a siphon pipe, the upper end of the shell A is provided with a liquid inlet A, the liquid inlet A is connected with the catheter through the first pipeline, the siphon pipe comprises an upper elbow pipe and a liquid inlet pipe, one end of the liquid inlet pipe is arranged in an inner cavity of the shell A, the other end of the liquid inlet pipe is connected with the liquid inlet of the upper elbow pipe, liquid flowing into the inner cavity of the shell A from the liquid inlet A flows out from the liquid outlet of the upper elbow pipe after entering the upper elbow pipe from the liquid inlet pipe, and finally flows into the urine collecting container through the second pipeline.

2. The urinary catheterization system of claim 1, wherein: the upper end of the shell A is also provided with a liquid inlet C, the lower end of the shell A is provided with a liquid outlet A, the liquid outlet end of the upper bent pipe is connected with the liquid inlet C, and the liquid inlet C is communicated with the liquid outlet A.

3. The urinary catheterization system of claim 2, wherein: the inner cavity of the shell A is longitudinally divided into a first inner cavity and a second inner cavity, the upper end of the first inner cavity is provided with a liquid inlet A, the lower end of the second inner cavity is provided with a liquid outlet A, the lower end of a liquid inlet pipe of the siphon pipe is arranged in the first inner cavity, the liquid inlet of the upper elbow pipe is connected with the upper end of the liquid inlet pipe, the liquid outlet of the upper elbow pipe is connected with a liquid inlet C, and the liquid inlet C is communicated with the second inner cavity.

4. The urinary catheterization system of claim 2, wherein: the lower end of a liquid inlet pipe of the siphon pipe is arranged in the inner cavity of the shell A, and the lower end of a liquid inlet C is connected with the liquid outlet A through a connecting pipe.

5. The urinary catheterization system of claim 1, wherein: the liquid outlet of the upper elbow pipe is directly connected with the second pipeline.

6. The urinary catheterization system according to any one of claims 1-5, characterized in that: the liquid inlet pipe lower extreme connection booster mechanism, booster mechanism includes the heavy object in casing B and the casing B inner chamber, and casing B upper and lower extreme is equipped with liquid outlet B and inlet B respectively, and liquid outlet B is connected with the liquid inlet pipe, and inlet B department is equipped with the heavy object, seals or opens inlet B through the heavy object.

7. The urinary catheterization system of claim 6, wherein: and a sealing element is arranged below the weight, and the weight seals or opens the liquid inlet B through the sealing element.

8. The urinary catheterization system according to any one of claims 1-5, characterized in that: the housing a includes an upper case and a lower case.

9. The urinary catheterization system according to any one of claims 1-5, characterized in that: the inner cavity or the first inner cavity of the shell A is communicated with an air inlet provided with a one-way valve.

10. The urinary catheterization system of claim 1, wherein: the urine collecting container is a urine bag made of an elastomer; or a urine bottle/bag made of hard material, and provided with an air inlet pipe communicated with the atmosphere.