Drainage device for internal medicine patient

Abstract

The invention discloses a drainage device for internal medicine patients, which relates to the field of drainage and comprises a liquid collecting box, a negative pressure drainage module, a liquid collecting bottle switching module and a driving module. The liquid collecting box comprises a box body and a box door, and a main controller is arranged on the front side of the box body; the negative pressure drainage module comprises a connecting pipe, a negative pressure pipe, a negative pressure pump, an exhaust pipe and a purifier; the liquid collection bottle switching module comprises a rotary table, a liquid collection bottle, a limiting sleeve, a tray and a pressure sensor, the rotary table is provided with the limiting sleeve, the movable tray is arranged in the rotary table, the pressure sensor is arranged on the tray, the liquid collection bottle is placed on the tray, the top end of the liquid collection bottle is provided with an insertion opening and an opening adjusting piece, and the driving module drives the rotary table to rotate and the tray to lift. The liquid collecting bottle rotates along with the rotary table to pass through a drainage position and a replacement position, the opening adjusting piece is opened during drainage, and the connecting pipe and the negative pressure pipe extend into the liquid collecting bottle; and the opening adjusting piece is closed during replacement. The device solves the problems that a traditional drainage device frequently replaces a liquid collecting bottle, is inconvenient to operate, easily generates peculiar smell and the like, improves drainage efficiency and improves use experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drainage, in particular to a medical patient drainage device. BACKGROUND

[0002] In the field of medical treatment, drainage devices are common medical instruments used to drain excess fluid from the body of a patient (such as pleural effusion, ascites, etc.), which is of great significance for the diagnosis, treatment and recovery of the patient. However, the existing drainage devices have many shortcomings in actual use, which need to be improved to meet the clinical needs.

[0003] 1. Frequent replacement of the collection bottle: Traditional drainage devices, such as CN202310230174.6, CN202410369027.1, etc., usually only have a single collection bottle. When the collection bottle is full, medical staff need to manually replace it. This process is not only tedious, but also can cause interruption of drainage during the replacement process, affecting the drainage effect, and even causing discomfort or complications in the patient.

[0004] 2. Sealing and odor problems: Drainage fluid often has a foul odor, especially when dealing with infected fluid. The spread of odor can have a serious impact on the ward environment, reducing the comfort of patients and medical staff. The existing drainage devices have deficiencies in sealing, which cannot effectively prevent odor from escaping, especially when replacing the collection bottle or pulling out the drainage tube, which can easily cause odor to spread. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a medical patient drainage device.

[0006] The technical solution of the present application is as follows: a medical patient drainage device, characterized in that it comprises a collection tank, a negative pressure drainage module, a collection bottle switching module and a driving module.

[0007] The collection tank comprises a tank body and a tank door. The front side of the tank body is provided with a main control unit, and the tank door is rotatably arranged on the rear side of the tank body to open or close the tank body.

[0008] The negative pressure drainage module comprises a connecting pipe, a negative pressure pipe, a negative pressure pump, an exhaust pipe and a purifier. The inside of the tank body is fixedly provided with a mounting plate. The upper side of the mounting plate is provided with the negative pressure pump and the purifier. The upper end of the connecting pipe extends out of the tank body and is connected to an external drainage tube. The lower end of the connecting pipe extends into the mounting plate. The lower end of the negative pressure pipe is adjacent to the lower end of the connecting pipe, and the upper end of the negative pressure pipe extends upward through the mounting plate and is connected to the negative pressure pump. The negative pressure pump is connected to the purifier through the exhaust pipe.

[0009] The liquid collecting bottle switching module includes a turntable, a liquid collecting bottle, a limiting sleeve, a tray and a pressure sensor. The turntable is rotatably arranged in the box body. A plurality of limiting sleeves are provided on the turntable. Each limiting sleeve is provided with a tray that can move up and down. A liquid collecting bottle is placed on each tray. The tray is also provided with a pressure sensor for detecting the weight of the liquid collecting bottle. The pressure sensor is connected to the main controller. The top of the liquid collecting bottle is provided with an insertion port, and the insertion port is provided with an opening adjustment member for automatically adjusting the opening and closing of the insertion port.

[0010] The driving module includes a first driving member and a second driving member, the first driving member is used to drive the turntable to rotate, and the second driving member is used to drive the tray to rise and fall; the liquid collecting bottle will pass through a replacement position and a drainage position when rotating with the turntable; at the replacement position, the liquid collecting bottle is adjacent to the box door; at the drainage position, the liquid collecting bottle is located directly below the connecting pipe and the negative pressure pipe, and when the tray rises to the point where the liquid collecting bottle abuts the mounting plate, the opening adjusting member opens the insertion port, and the connecting pipe and the negative pressure pipe extend into the liquid collecting bottle; when the tray descends to the bottom of the limiting sleeve, the connecting pipe and the negative pressure pipe leave the liquid collecting bottle, and the opening adjusting member closes the insertion port.

[0011] Furthermore, rollers are provided at the bottom of the box.

[0012] Furthermore, an activated carbon adsorbent is provided in the purifier.

[0013] Furthermore, the connecting pipe is provided with a solenoid valve connected to the main controller.

[0014] Furthermore, the liquid collection bottle includes a bottle body and a bottle cap, the bottle cap is threadedly connected to the bottle body, the bottle cap is provided with the insertion port, the opening adjustment member is an elastic sheet, the elastic sheet is fixedly provided at the insertion port, and the center of the elastic sheet is provided with a plurality of radial dividing lines extending toward the edge, the plurality of dividing lines dividing the elastic sheet into a plurality of unit sheets;

[0015] When the tray rises to the point where the liquid collecting bottle abuts against the mounting plate, the connecting tube and the negative pressure tube push the elastic sheet downward; when the connecting tube and the negative pressure tube leave the liquid collecting bottle, the elastic sheet recovers.

[0016] Furthermore, a sealing ring is fixedly provided below the mounting plate, and the connecting pipe and the negative pressure pipe are located inside the sealing ring; in the drainage position, when the liquid collecting bottle rises with the tray, the top of the liquid collecting bottle abuts against the sealing ring.

[0017] Furthermore, the first driving component is a first stepper motor connected to the main controller, the first stepper motor is located below the turntable and fixedly connected to the box, and the motor shaft of the first stepper motor is fixedly connected to the turntable.

[0018] Furthermore, an avoidance hole is provided on the turntable, and a drive shaft is provided on the bottom of the tray, and the drive shaft extends downward from the avoidance hole; the second driving member includes a second stepper motor and an eccentric cam, the second stepper motor is fixed in the box and connected to the main controller, the motor shaft of the second stepper motor is connected to the eccentric cam, and the eccentric cam is located below the drive shaft, and when the second stepper motor drives the eccentric cam to rotate, the eccentric cam can push the drive shaft to rise.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The liquid collection bottle switching module and the drive module work together to automatically switch the liquid collection bottles. When a liquid collection bottle is full, it automatically switches to another unused liquid collection bottle without manual intervention, ensuring the continuity of the drainage process. Moreover, when replacing the liquid collection bottle, the drainage position and the replacement position of the turntable are independent of each other. There will always be another liquid collection bottle in the drainage position in a working state. This not only achieves continuous drainage without frequent replacement of the liquid collection bottle, improving drainage efficiency, but also allows the replacement of the liquid collection bottle without stopping the machine.

[0021] 2. The device has a good anti-odor design, which can effectively prevent the odor of the drainage fluid from escaping, improve the ward environment, and enhance the comfort of patients and medical staff: on the one hand, a purifier is provided at the exhaust end of the negative pressure pump to purify the gas extracted by negative pressure to prevent the escape of unpleasant odors and affect the air environment; on the other hand, an opening adjustment part is provided at the insertion port of the liquid collection bottle. When the tray rises, the insertion port automatically opens, and the connecting tube and the negative pressure tube extend into the liquid collection bottle; when the tray descends, the insertion port automatically closes to prevent the unpleasant odor in the liquid collection bottle from escaping. The self-adjusting mechanism of the opening adjustment part will not affect the normal liquid collection of the liquid collection bottle, and at the same time, the insertion port can be closed in time after the liquid collection is completed to prevent the unpleasant odor of the drainage fluid from escaping.

[0022] 3. Through its automated and intelligent design, this device solves the problems of traditional drainage devices, such as the need for frequent replacement of liquid collection bottles, inconvenient operation, and easy generation of odor. The device is suitable for a variety of internal medicine drainage scenarios, can effectively improve drainage efficiency, and improve the user experience of patients and medical staff, and has high practical value.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. The drawings are only examples and are not drawn strictly to scale. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0025] Figure 1 It is an internal schematic diagram of the present invention;

[0026] Figure 2 is an external schematic diagram of the present invention;

[0027] Figure 3 Schematic diagram of each module inside the box of the present invention from the upper side;

[0028] Figure 4 Schematic diagram of each module inside the box of the present invention from the bottom side perspective;

[0029] Figure 5 is a cross-sectional view of the limiting sleeve portion of the present invention from an upper side perspective;

[0030] Figure 6 is a cross-sectional view of the limiting sleeve portion of the present invention from a bottom side perspective;

[0031] Figure 7 It is an exploded schematic diagram of the liquid collecting bottle of the present invention;

[0032] Figure 8 It is a reference diagram of the use state of the present invention;

[0033] Figure 9 It is a reference diagram of the use state of the present invention.

[0034] Reference numerals:

[0035] 1. Box body; 2. Box door; 3. Main controller; 4. Connecting pipe; 5. Negative pressure pipe; 6. Exhaust pipe; 7. Purifier; 8. Turntable; 9. Liquid collecting bottle; 10. Limit sleeve; 11. Tray; 12. Pressure sensor; 13. Roller; 14. Solenoid valve; 15. Bottle body; 16. Bottle cap; 17. Opening adjustment piece; 18. Dividing line; 19. Sealing ring; 20. First stepper motor; 21. Drive shaft; 22. Second stepper motor; 23. Eccentric cam; 24. Negative pressure pump; 25. Mounting plate. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] In the description of the present invention, references to "first feature" and "second feature" may include one or more of these features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of these features.

[0040] like Figures 1-9 The drainage device for internal medicine patients shown includes: a liquid collection box, a negative pressure drainage module, a liquid collection bottle 9 switching module and a driving module.

[0041] like Figure 1 and Figure 2 As shown, the liquid collection box includes a box body 1 and a box door 2. The main controller 3 is provided on the front side of the box body 1. The box door 2 is rotatably provided on the back side of the box body 1 to open or close the box body 1. Rollers 13 can also be provided at the bottom of the box body 1 to facilitate the movement and adjustment of the position of the device according to drainage requirements.

[0042] like Figure 1 、 Figure 3 and Figure 4 As shown, the negative pressure drainage module includes a connecting pipe 4, a negative pressure pipe 5, a negative pressure pump 24, an exhaust pipe 6 and a purifier 7. A mounting plate 25 is fixed inside the box body 1, and a negative pressure pump 24 and a purifier 7 are provided on the upper side of the mounting plate 25. The upper end of the connecting pipe 4 extends out of the box body 1 and is connected to the external drainage pipe, and the lower end extends under the mounting plate 25. The lower end of the negative pressure pipe 5 is adjacent to the lower end of the connecting pipe 4, and the upper end passes through the mounting plate 25 upward and is connected to the negative pressure pump 24. The negative pressure pump 24 is connected to the purifier 7 through the exhaust pipe 6.

[0043] like Figure 3-Figure 7 As shown, the liquid collecting bottle 9 switching module includes a turntable 8, a liquid collecting bottle 9, a limiting sleeve 10, a tray 11 and a pressure sensor 12. The turntable 8 is rotatably arranged in the box body 1, and a number of limiting sleeves 10 are provided on the turntable. Each limiting sleeve 10 is provided with a tray 11 that can move up and down. A liquid collecting bottle 9 is placed on each tray 11, and a pressure sensor 12 for detecting the weight of the liquid collecting bottle 9 is also provided on the tray 11. The pressure sensor 12 is connected to the main controller 3. An insertion port is provided at the top of the liquid collecting bottle 9, and an opening adjustment member 17 for automatically adjusting the opening and closing of the insertion port is provided at the insertion port.

[0044] like Figure 8 and Figure 9 As shown, the driving module includes a first driving member and a second driving member, the first driving member is used to drive the turntable 8 to rotate, and the second driving member is used to drive the tray 11 to rise and fall; the liquid collecting bottle 9 will pass through the replacement position and the drainage position when rotating with the turntable 8; in the replacement position, the liquid collecting bottle 9 is adjacent to the box door 2; in the drainage position, the liquid collecting bottle 9 is located directly below the connecting tube 4 and the negative pressure tube 5, when the tray 11 rises to the liquid collecting bottle 9 and abuts the mounting plate 25, the opening adjustment member 17 opens the insertion port, and the connecting tube 4 and the negative pressure tube 5 extend into the liquid collecting bottle 9; when the tray 11 descends to the bottom of the limiting sleeve 10, the connecting tube 4 and the negative pressure tube 5 leave the liquid collecting bottle 9, and the opening adjustment member 17 closes the insertion port.

[0045] Specifically, the connecting tube 4 provided in the device is used to connect to the drainage tube on the patient to drain the patient's drainage fluid into the collection bottle 9. The negative pressure tube 5 is used to generate negative pressure in the collection bottle 9 so that the drainage fluid can continue to flow smoothly into the collection bottle 9. Since the drainage fluid in the patient's body usually has an unpleasant odor, when the negative pressure pump 24 extracts the gas from the collection bottle 9 and discharges it, in order to prevent the unpleasant odor from escaping and affecting the surrounding air environment, a purifier 7 is provided at the exhaust end of the negative pressure pump 24 to purify the extracted gas.

[0046] During drainage, the second drive member drives the tray 11 upward, allowing the liquid collecting bottle 9 to move up and abut against the mounting plate 25. At this point, the opening adjustment member 17 opens the insertion port, allowing the connecting tube 4 and the negative pressure tube 5 to extend into the liquid collecting bottle 9 for normal negative pressure drainage. When the pressure sensor 12 detects that the drainage liquid in the liquid collecting bottle 9 reaches a certain weight, the liquid collecting bottle 9 is considered full and needs to be replaced.

[0047] At this time, the second driving member drives the tray 11 to move downward, and the used liquid collection bottle 9 moves downward accordingly, the connecting tube 4 and the negative pressure tube 5 leave the liquid collection bottle 9, and the opening regulating member 17 closes the insertion port, thereby preventing the unpleasant smell of the drainage liquid in the liquid collection bottle 9 from escaping. Therefore, the opening regulating member 17 can achieve the effect of not affecting the normal liquid collection of the liquid collection bottle 9 by regulating the opening and closing of the insertion port, while at the same time being able to close the insertion port in time after the liquid collection is completed to prevent the unpleasant smell of the drainage liquid from escaping.

[0048] Then, the first driving member drives the turntable 8 to rotate so that another unused liquid collecting bottle 9 moves to the drainage position. After that, the second driving member drives the tray 11 here to rise to lift the unused liquid collecting bottle 9 and continue normal drainage. The used liquid collecting bottle 9 will move to the replacement position. Later, medical staff can open the box door 2 to replace the liquid collecting bottle 9 in their spare time. This is more flexible. Moreover, when replacing the liquid collecting bottle 9, the drainage position and the replacement position do not affect each other. There will always be another liquid collecting bottle 9 in the drainage position in working condition, so that not only continuous drainage can be achieved without frequent replacement of the liquid collecting bottle 9, thus improving drainage efficiency, but also the liquid collecting bottle 9 can be replaced without stopping the machine.

[0049] In some embodiments, an activated carbon adsorbent is provided in the purifier 7 for purification and deodorization.

[0050] In some embodiments, a solenoid valve 14 connected to the main controller 3 is provided on the connecting pipe 4 to facilitate the on-off control of the connecting pipe 4 .

[0051] In some embodiments, as Figure 7 As shown, the liquid collecting bottle 9 includes a bottle body 15 and a bottle cap 16, which is threadedly connected to the bottle body 15, thereby achieving a detachable connection between the bottle body 15 and the bottle cap 16. The bottle cap 16 has an insertion port, and the opening adjustment member 17 is an elastic sheet fixed to the insertion port. The elastic sheet has a plurality of radial dividing lines 18 extending from the center of the elastic sheet toward the edge, and the dividing lines 18 divide the elastic sheet into a plurality of unit sheets. When the tray 11 rises to abut the liquid collecting bottle 9 and the mounting plate 25, the connecting tube 4 and the negative pressure tube 5 push the elastic sheet downward. When the connecting tube 4 and the negative pressure tube 5 leave the liquid collecting bottle 9, the elastic sheet returns to its original position. This opening adjustment member 17 has a simple structure and is easy to implement.

[0052] In some embodiments, as Figure 4 and Figure 9 As shown, a sealing ring 19 is fixedly provided below the mounting plate 25, and the connecting tube 4 and the negative pressure tube 5 are located inside the sealing ring 19; in the drainage position, when the liquid collecting bottle 9 rises with the tray 11, the top of the liquid collecting bottle 9 abuts against the sealing ring 19, thereby ensuring good sealing between the liquid collecting bottle 9 and the mounting plate 25 during normal drainage, ensuring the negative pressure effect of the liquid collecting bottle 9, and also preventing the unpleasant odor of the drainage liquid from escaping through the gap between the liquid collecting bottle 9 and the mounting plate 25.

[0053] In some embodiments, as Figure 5 and Figure 6 As shown, the first driving component is the first stepper motor 20 connected to the main controller 3. The first stepper motor 20 is located below the turntable 8 and is fixedly connected to the box 1. The motor shaft of the first stepper motor 20 is fixedly connected to the turntable 8.

[0054] A drive shaft 21 is provided at the bottom of the tray 11, and the drive shaft 21 extends downward from the avoidance hole; the second driving component includes a second stepper motor 22 and an eccentric cam 23. The second stepper motor 22 is fixed in the box body 1 and is connected to the main controller 3. The motor shaft of the second stepper motor 22 is connected to the eccentric cam 23. The eccentric cam 23 is located below the drive shaft 21. When the second stepper motor 22 drives the eccentric cam 23 to rotate, the eccentric cam 23 can push the drive shaft 21 to rise.

[0055] Since the turntable 8 in this device does not rotate all the time, it only rotates when the position of the liquid collecting bottle 9 needs to be switched. Similarly, the tray 11 does not need to remain in a moving state all the time, but only moves when the position of the liquid collecting bottle 9 needs to be adjusted up and down. Therefore, the first drive member and the second drive member both use stepper motors. The stepper motor has a simple structure, low cost, and its rotation angle is easy to control, which is suitable for application in the usage scenario of this device.

[0056] Moreover, in the second driving component, the second stepper motor 22 drives the eccentric cam 23 to rotate, so that the eccentric cam 23 pushes the driving shaft 21 to rise. When the second stepper motor 22 rotates in the opposite direction, the eccentric cam no longer pushes the driving shaft 21 to rise, and the tray 11 can descend under the action of its own weight. This driving form is simple and easy to implement.

[0057] In summary, this device has the following characteristics:

[0058] 1. Automatic switching of the liquid collecting bottle 9 can be achieved through the cooperation between the liquid collecting bottle 9 switching module and the driving module. When one liquid collecting bottle 9 is full, it automatically switches to another unused liquid collecting bottle 9 without manual intervention, ensuring the continuity of the drainage process. Moreover, when replacing the liquid collecting bottle 9, the drainage position and the replacement position of the turntable 8 are independent of each other. There will always be another liquid collecting bottle 9 in the working state at the drainage position, thus achieving continuous drainage without the need for frequent replacement of the liquid collecting bottle 9, improving drainage efficiency, and also enabling the replacement of the liquid collecting bottle 9 without stopping the machine.

[0059] 2. The device has a good anti-odor design, which can effectively prevent the odor of the drainage fluid from escaping, improve the ward environment, and enhance the comfort of patients and medical staff: on the one hand, the exhaust end of the negative pressure pump 24 is provided with a purifier 7 to purify the gas extracted by negative pressure to prevent the escape of unpleasant odors and affect the air environment. On the other hand, an opening adjustment member 17 is provided at the insertion port of the liquid collecting bottle 9. When the tray 11 rises, the insertion port automatically opens, and the connecting tube 4 and the negative pressure tube 5 extend into the liquid collecting bottle 9; when the tray 11 descends, the insertion port automatically closes to prevent the unpleasant odor in the liquid collecting bottle 9 from escaping. The self-adjusting mechanism of the opening adjustment member 17 will not affect the normal liquid collection of the liquid collecting bottle 9, and at the same time, after the liquid collection is completed, the insertion port can be closed in time to prevent the unpleasant odor of the drainage fluid from escaping.

[0060] 3. Through its automated and intelligent design, this device solves the problems of traditional drainage devices, such as the need for frequent replacement of the liquid collection bottle 9, inconvenient operation, and easy generation of odor. The device is suitable for a variety of internal medicine drainage scenarios, can effectively improve drainage efficiency, and improve the user experience of patients and medical staff, and has high practical value.

[0061] Although some embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations to these embodiments without departing from the principles and purpose of the present invention are all within the scope of protection of the claims of the present invention.

Claims

1. A drainage device for medical patients, characterized in that: include: Liquid collecting tank, negative pressure drainage module, liquid collecting bottle switching module and drive module; The liquid collecting box includes a box body and a box door. The main controller is provided on the front side of the box body. The box door is rotatably provided on the rear side of the box body to open or close the box body. The negative pressure drainage module includes a connecting pipe, a negative pressure pipe, a negative pressure pump, an exhaust pipe and a purifier. A mounting plate is fixedly provided inside the box body, and the negative pressure pump and purifier are provided on the upper side of the mounting plate. The upper end of the connecting pipe extends out of the box body and is connected to the external drainage pipe, and the lower end extends under the mounting plate. The lower end of the negative pressure pipe is adjacent to the lower end of the connecting pipe, and the upper end passes upward through the mounting plate and is connected to the negative pressure pump. The negative pressure pump is connected to the purifier through the exhaust pipe. The liquid collecting bottle switching module includes a turntable, a liquid collecting bottle, a limiting sleeve, a tray and a pressure sensor. The turntable is rotatably arranged in the box body. A plurality of limiting sleeves are provided on the turntable. Each limiting sleeve is provided with a tray that can move up and down. A liquid collecting bottle is placed on each tray. The tray is also provided with a pressure sensor for detecting the weight of the liquid collecting bottle. The pressure sensor is connected to the main controller. The top of the liquid collecting bottle is provided with an insertion port, and the insertion port is provided with an opening adjustment member for automatically adjusting the opening and closing of the insertion port. The driving module includes a first driving member and a second driving member, the first driving member is used to drive the turntable to rotate, and the second driving member is used to drive the tray to rise and fall; the liquid collecting bottle will pass through a replacement position and a drainage position when rotating with the turntable; at the replacement position, the liquid collecting bottle is adjacent to the box door; at the drainage position, the liquid collecting bottle is located directly below the connecting pipe and the negative pressure pipe, and when the tray rises to the point where the liquid collecting bottle abuts the mounting plate, the opening adjusting member opens the insertion port, and the connecting pipe and the negative pressure pipe extend into the liquid collecting bottle; when the tray descends to the bottom of the limiting sleeve, the connecting pipe and the negative pressure pipe leave the liquid collecting bottle, and the opening adjusting member closes the insertion port.

2. The drainage device for medical patients according to claim 1, characterized in that: Rollers are provided at the bottom of the box.

3. The drainage device for medical patients according to claim 1, characterized in that: An activated carbon adsorbent is arranged in the purifier.

4. The drainage device for medical patients according to claim 1, characterized in that The connecting pipe is provided with a solenoid valve connected to the main controller.

5. The drainage device for medical patients according to claim 1, characterized in that: The liquid collection bottle includes a bottle body and a bottle cap, the bottle cap is threadedly connected to the bottle body, the bottle cap is provided with the insertion port, the opening adjustment member is an elastic sheet, the elastic sheet is fixedly arranged at the insertion port, and a plurality of radial dividing lines extending toward the edge are provided at the center of the elastic sheet, and the plurality of dividing lines divide the elastic sheet into a plurality of unit sheets; When the tray rises to the point where the liquid collecting bottle abuts against the mounting plate, the connecting tube and the negative pressure tube push the elastic sheet downward; when the connecting tube and the negative pressure tube leave the liquid collecting bottle, the elastic sheet recovers.

6. The drainage device for medical patients according to claim 1, characterized in that A sealing ring is fixedly provided below the mounting plate, and the connecting pipe and the negative pressure pipe are located inside the sealing ring; in the drainage position, when the liquid collecting bottle rises with the tray, the top end of the liquid collecting bottle abuts against the sealing ring.

7. The drainage device for medical patients according to claim 1, characterized in that: The first driving component is a first stepper motor connected to the main controller. The first stepper motor is located below the turntable and fixedly connected to the box. The motor shaft of the first stepper motor is fixedly connected to the turntable.

8. The drainage device for medical patients according to claim 1, characterized in that: The turntable is provided with an avoidance hole, and the bottom of the tray is provided with a drive shaft, and the drive shaft extends downward from the avoidance hole; the second driving member includes a second stepper motor and an eccentric cam, the second stepper motor is fixed in the box body and connected to the main controller, the motor shaft of the second stepper motor is connected to the eccentric cam, and the eccentric cam is located below the drive shaft. When the second stepper motor drives the eccentric cam to rotate, the eccentric cam can push the drive shaft to rise.

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