Drainage device for department of hepatobiliary medicine

Abstract

The invention discloses a drainage device for the department of hepatobiliary medicine. The drainage device comprises a box body, a first infusion pump, a second infusion pump, a suction pipe, a drainage pipe, a flushing pipe, an infusion pipe, a liquid collection bottle, a liquid storage bottle and a power module. Wherein the box body is of a hollow structure, a partition plate is arranged in the box body, and the interior of the box body is divided into an upper cavity and a lower cavity by the partition plate; the first infusion pump and the second infusion pump are mounted in the upper cavity of the box body; the liquid collection bottle and the liquid storage bottle are arranged in the lower cavity of the box body, the liquid collection bottle is used for storing accumulated liquid, and the liquid storage bottle is used for storing flushing water; one end of the suction tube is connected with the liquid inlet end of the first infusion pump, and the other end of the suction tube extends out of the box body and is provided with a plug for inserting a drainage tube; one end of the drain pipe is connected with the liquid outlet end of the first infusion pump, and the other end penetrates through the partition plate to be communicated with the liquid collecting bottle; and one end of the flushing pipe is connected with the liquid outlet end of the second infusion pump. The negative pressure drainage device can replace manual negative pressure drainage, and the workload of medical staff is effectively relieved.

Description

Technical Field

[0001] The present invention relates to a drainage device, in particular to a drainage device for hepatobiliary medicine. Background Art

[0002] The hepatobiliary drainage device uses SD technology to place one end of the drainage tube into the body to drain the body fluids that are blocked inside the liver and gallbladder. It can effectively relieve the blockage of the tube, reduce the pressure inside the liver and gallbladder, revive the physiological functions of the liver and gallbladder, and thoroughly treat the disease. It is an indispensable device for the treatment of hepatobiliary diseases. Medical personnel often need to use drainage devices to drain the patient's accumulated fluids during hepatobiliary surgery, and guide the pus, blood, and fluids accumulated between human tissues or in the body cavity to the outside of the body to prevent postoperative infection and promote wound healing.

[0003] Most traditional drainage devices are manual negative pressure drainage. When there is a lot of fluid accumulation, it requires more effort, which increases the workload of medical staff. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a drainage device for hepatobiliary internal medicine, which can replace artificial negative pressure drainage and effectively reduce the workload of medical staff.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A drainage device for hepatobiliary internal medicine comprises a box body, a first liquid pump, a second liquid pump, a suction tube, a drainage tube, a flushing tube, a liquid pump, a liquid collecting bottle, a liquid storage bottle and a power module; wherein the box body is a hollow structure, a partition is provided in the box body, and the partition divides the interior of the box body into an upper chamber and a lower chamber; the first liquid pump and the second liquid pump are installed in the upper chamber of the box body; the liquid collecting bottle and the liquid storage bottle are arranged in the lower chamber of the box body, the liquid collecting bottle is used to store accumulated fluid, and the liquid storage bottle is used to store flushing water; one end of the suction tube is connected to the liquid inlet end of the first liquid pump, and the other end is connected to the liquid inlet end of the first liquid pump. One end extends out of the box body, and a plug for inserting a drainage tube is provided at the end; one end of the drainage tube is connected to the liquid outlet of the first liquid pump, and the other end passes through the partition and is connected to the liquid collecting bottle; one end of the flushing tube is connected to the liquid outlet of the second liquid pump, and the other end extends out of the box body and is connected to the pipeline of the suction tube; one end of the liquid suction tube is connected to the liquid inlet end of the second liquid pump, and the other end passes through the partition and is connected to the flushing water in the liquid storage bottle; the power module is arranged above the partition, for providing working voltage to the first liquid pump and the second liquid pump.

[0007] Compared with the prior art, the present invention achieves at least the following beneficial effects:

[0008] The present invention provides a drainage device for hepatobiliary internal medicine. By inserting a plug into the drainage tube and starting the first liquid pump, the drainage of the accumulated fluid in the liver and gallbladder can be accelerated, and the drainage efficiency can be improved. The drainage fluid will be collected in a liquid collection bottle, replacing manual negative pressure drainage and reducing the workload of medical staff; by starting the second liquid pump, flushing water in the liquid storage bottle can be extracted and the suction tube can be flushed to prevent the suction tube from being blocked. The drainage device has the advantages of improving drainage efficiency and preventing pipeline blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] One or more embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0010] Figure 1 Schematic diagram of the external structure of an embodiment of the present invention.

[0011] Figure 2 for Figure 1 sectional view of .

[0012] Figure 3 for Figure 1 rear view.

[0013] Figure 4 Schematic diagram of the structure of the first liquid pump according to an embodiment of the present invention.

[0014] Figure 5 for Figure 4 Exploded diagram.

[0015] Figure 6 for Figure 4 sectional view of .

[0016] Figure 7 2 is a cross-sectional view of a one-way valve according to an embodiment of the present invention.

[0017] Figure 8 It is a cross-sectional view of a one-way valve in a conducting state according to an embodiment of the present invention.

[0018] Figure 9 This is a circuit diagram of a power module, a first liquid pump, and a second liquid pump according to an embodiment of the present invention.

[0019] The numbers in the figure are: 1. Box body; 11. Partition; 12. Handle; 13. Charging port; 14. Switch; 15. Side cover; 2. First liquid pump; 21. Motor; 22. Mounting plate; 23. Fixing plate; 24. Rotating plate; 25. Blade; 26. Cover; 261. First pipe opening; 262. Second pipe opening; 3. Second liquid pump; 4. Suction tube; 41. Plug; 5. Drain pipe; 6. Flushing pipe; 7. Liquid pump; 8. Flushing pipe; 9. Liquid storage bottle ;10. Power module;101. First power module;102. Second power module;20. One-way valve;201. Housing;2011. First channel;2012. Second channel;2013. Third channel;2014. Notch;202. Stopper;2021. First stopper;2022. Second stopper;2023. Groove;203. Limiting ring;204. Spring;30. Switch valve;40. Sliding end of sliding rheostat R2. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present invention can be implemented in a variety of different forms and should not be construed as being limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present invention more complete and to fully convey the concepts of the present invention to those skilled in the art.

[0021] like Figures 1 to 9 As shown, the drainage device for hepatobiliary internal medicine of this embodiment includes a box body 1, a first liquid pump 2, a second liquid pump 3, a suction tube 4, a drainage tube 5, a flushing tube 6, a liquid pump 7, a liquid collection bottle 8, a liquid storage bottle 9 and a power module 10.

[0022] The box body 1 is a hollow structure, and a partition 11 is provided inside the box body 1 . The partition 11 divides the interior of the box body 1 into an upper cavity and a lower cavity. A handle 12 is provided on the upper surface of the box body 1 .

[0023] The first liquid pump 2 and the second liquid pump 3 are installed in the upper cavity of the box body 1 .

[0024] The liquid collecting bottle 8 and the liquid storage bottle 9 are arranged in the lower cavity of the box body 1. The liquid collecting bottle 8 is used to store the accumulated liquid, and the liquid storage bottle 9 is used to store the flushing water.

[0025] One end of the suction tube 4 is connected to the liquid inlet end of the first liquid pump 2 , and the other end extends out of the box body 1 , and a plug 41 for inserting the drainage tube is provided at the end.

[0026] One end of the liquid discharge pipe 5 is connected to the liquid outlet of the first liquid pump 2 , and the other end passes through the partition 11 and communicates with the liquid collecting bottle 8 .

[0027] One end of the flushing tube 6 is connected to the liquid outlet of the second liquid pump 3 , and the other end passes through the outside of the box body 1 and is communicated with the pipeline of the suction tube 4 .

[0028] One end of the liquid extraction tube 7 is connected to the liquid inlet end of the second liquid extraction pump 3 , and the other end passes through the partition 11 and is communicated with the flushing water in the liquid storage bottle 9 .

[0029] The power supply module 9 is disposed above the partition 11 and is used to provide operating voltage to the first liquid pump 2 and the second liquid pump 3 .

[0030] The first liquid pump 2 and the second liquid pump 3 of this embodiment adopt the same mechanical structure. Both include a motor 21, a mounting plate 22, a fixed plate 23, a rotating plate 24, blades 25 and a cover 26. Among them, the mounting plate 22 is installed on the front surface of the motor 21 (the front end of the motor 21 where the motor 21 shaft extends). The mounting plate 22 of this embodiment is "L"-shaped, with its upper plate surface passing through the rotating shaft of the motor 21 and fixedly connected to the front surface of the motor 21, and the lower plate surface is used to be installed on the partition 11. The cross-section of the fixed plate 23 is circular, and it passes through the rotating shaft of the motor 21 and is fixedly connected to the plate surface of the mounting plate 22. The side wall of the fixed plate 23 is provided with an external thread. The rotating plate 24 is circular, and its middle part is fixedly connected to the rotating shaft of the motor 21. The motor 21 is used to drive the rotating plate 24 to rotate. The blades 25 are arc-shaped and are provided with multiple blades. The multiple blades 25 are circumferentially arranged on the front surface of the rotating plate 24. The cover 26 is a hollow cylindrical structure with one end open and the other closed. It is located outside the fixed plate 23, the rotating plate 24, and the blades 25. The inner wall of the cover 26 is provided with internal threads that connect to the external threads of the fixed plate 23. The cover 26 is threadedly connected to the fixed plate 23. The side wall of the cover 26 is provided with a first pipe opening 261, and the front surface (the sealed surface) of the cover 26 is provided with a second pipe opening 262.

[0031] The first liquid pump 2 and the second liquid pump 3 have the same working principle, which is: the motor 21 drives the rotating plate 24 to rotate, and the rotation of the rotating plate 24 drives the blades 25 to rotate, and then generates air flow. Since a closed space is formed between the cover body 26 and the fixed plate 23, an air pressure difference is generated between the first pipe opening 261 and the second pipe opening 262, and the liquid at the end with a higher pressure will flow to the end with a lower pressure. Taking the first liquid pump 2 as an example, the first pipe opening 261 is connected to the suction tube 4, and the second pipe opening 262 is connected to the drainage tube 5. When the plug 41 is inserted into the drainage tube, the pressure at one end of the drainage tube is greater than the pressure at one end of the drainage tube 5 (after the drainage tube 5 is inserted into the liquid collecting bottle 8, the liquid collecting bottle 8 is not a closed space). After starting the first liquid pump 2, the accumulated fluid inside the liver and gallbladder will be sucked out and drained into the liquid collecting bottle 8. Taking the second liquid pump 3 as an example, the first pipe mouth 261 is connected to the flushing pipe 6, and the second pipe mouth 262 is connected to the liquid pumping pipe 7. When the liquid pumping pipe 7 is inserted into the flushing water in the liquid storage bottle 9, the pressure at one end of the liquid pumping pipe 7 is greater than the pressure at one end of the flushing pipe 6. After starting the second liquid pump 3, the flushing water will be pumped from the liquid pumping pipe 7 into the flushing pipe 8 and flush the suction pipe 4.

[0032] To prevent flushing water from splashing out of the plug 41 when flushing the suction tube 4, a one-way valve 20 is provided on the pipe of the suction tube 4 outside the housing 1. The one-way valve 20 is located above the intersection of the flushing pipe 6 and the suction tube 4, and close to the plug 41. An on-off valve 30 is provided on the pipe of the flushing pipe 6 outside the housing 1. The purpose of providing the on-off valve 30 is to prevent the flushing pipe 6 from affecting the pumping operation of the first liquid pump 2. When the first liquid pump 2 is used to pump liquid, the on-off valve 30 needs to be closed. When flushing the drainage tube 4, the on-off valve 30 needs to be opened.

[0033] The one-way valve 20 of this embodiment includes a housing 201 , a stopper 202 , a limiting ring 203 and a spring 204 .

[0034] The housing 201 is a hollow cylindrical structure with two through-holes. A first channel 2011, a second channel 2012, and a third channel 2013 are sequentially disposed within the housing 201. The first channel 2011 and the third channel 2013 are both connected to the piping of the suction tube 4 (the suction tube 4 is disconnected within the one-way valve 20, with the disconnected ends connected via the one-way valve 20). Specifically, the housing 201 is provided with connecting ends at both ends that communicate with the first channel 2011 and the third channel 2013, respectively, and the two connecting ends are connected to the piping of the suction tube 4. The channel diameter of the first channel 2011 is smaller than the channel diameters of the second channel 2012 and the third channel 2013, and the channel diameter of the third channel 2013 is smaller than the channel diameter of the second channel 2012.

[0035] The stopper 202 is disposed in the hollow portion of the housing 201. Its front end is designed to block the first channel 2011, while its rear end is located in the third channel 2013 and can slide within the third channel 2013. The stopper 202 of this embodiment includes a first stopper 2021 and a second stopper 2022. The first stopper 2021 is truncated cone-shaped, with a top diameter smaller than the diameter of the first channel 2011, a cross-sectional diameter equal to the diameter of the first channel 2011, and a bottom diameter greater than the diameter of the first channel 2011 but smaller than the diameter of the second channel 2012. The second stopper 2022 is cylindrical, with a front end connected to the bottom of the first stopper 2021 and a rear end located in the third channel 2013. The diameter of the second stopper 2022 is equal to the bottom diameter of the first stopper 2021 but smaller than the diameter of the third channel 2013. The rear end of the second stopper 2022 of this embodiment is provided with a groove 2023 that is recessed toward its front end. A notch 2014 is provided on the upper surface of the second stopper 2022 located at the second channel 2012 . The notch 2014 is connected to the groove 2023 . At this time, the diameter of the second stopper 2022 may be equal to or slightly smaller than the channel diameter of the third channel 2013 .

[0036] The limiting ring 203 is set in the third channel 2013. The outer ring diameter of the limiting ring 203 is equal to the channel diameter of the third channel 2013, and the inner ring diameter is smaller than the diameter of the spring 204, but the inner ring diameter cannot be too small.

[0037] The spring 204 is connected between the retaining ring 203 and the rear end of the stopper 202. In this embodiment, one end of the spring 204 is located within the groove 2023 and connected to the bottom wall of the groove 2023. The other end of the spring 204 is connected to the retaining ring 203. The stopper 202 can elastically move its front end away from the first channel 2011, thereby allowing the first channel 2011, the second channel 2012, and the third channel 2013 to flow, or it can block the first channel 2011 and prevent the first channel 2011, the second channel 2012, and the third channel 2013 from flowing. In this embodiment, the spring 204 should not be a hard spring, but a soft spring.

[0038] The operating principle of the one-way valve of this embodiment is as follows: under the elastic force of the spring 204, the front end of the first stopper 2021 of the stopper 202 is placed in the first channel 2011. Since the cross-sectional diameter of the middle part of the first stopper 2021 is equal to the diameter of the first channel 2011, the middle part of the first stopper 2021 will block the first channel 2011. At this time, the first channel 2011, the second channel 2012 and the third channel 2013 are not connected. At this time, the liquid cannot flow from the drainage tube to the plug 41, thereby preventing the liquid from flowing back. After the first liquid pump 2 is started, Since liquid flows at one end of the drainage tube and the pressure at one end of the drainage tube is greater than the pressure at one end of the discharge tube 5, the stopper 202 moves toward one end of the limit ring 203 under the action of pressure and attraction. At this time, the first stopper 2021 of the stopper 202 leaves the first channel 2011, and the spring 204 is compressed. The body fluid enters the second channel 2012 from the first channel 2011, and enters the groove 2023 from the notch 2014 of the second stopper 2022, and then enters the third channel 2013 from the groove 2023, and finally enters the suction tube 4. The direction of the liquid flow can be seen in FIG. Figure 8 After the plug 41 is unplugged and the first liquid pump 2 is turned off, the spring 204 releases its elastic force and the stopper 203 returns to its original position, continuing to block the first channel 2011 .

[0039] The power module 10 of this embodiment includes a first power module 101 and a second power module 102 , wherein the first power module 101 provides an operating voltage for the first liquid pump 2 , and the second power module 102 provides an operating voltage for the second liquid pump 3 .

[0040] like Figure 9As shown, the first power module 101 of this embodiment includes a 24V DC power supply, an LM2596S-ADJ chip, a resistor R1, a sliding rheostat R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3, an inductor L1, and a diode D1. The resistance of resistor R1 is 1KΩ, the maximum resistance of sliding rheostat R2 is 20K ohms, and the resistance of resistor R3 is 1K ohm; the value of capacitor C1 is 3.3nF, the value of capacitor C2 is 470uF, and the value of capacitor C3 is 220uF; the value of inductor L is 68uH. Their circuit connection relationship is as follows:

[0041] The positive electrode of the 24V DC power supply is electrically connected to the positive electrode of capacitor C2 and the VIN pin of the LM2596S-ADJ chip respectively; the negative electrode of the 24V DC power supply, the negative electrode of capacitor C2, the ON / OFF pin and the GND pin of the LM2596S-ADJ chip are electrically connected to the GND end. The OUT pin of the LM2596S-ADJ chip is electrically connected to the cathode of diode D1 and one end of inductor L1, respectively. The anode of diode D1 is electrically connected to the GND terminal. The other end of inductor L1 is electrically connected to the positive electrode of the power supply terminal of the first liquid pump, and the negative electrode of the power supply terminal of the first liquid pump is electrically connected to the GND terminal. The FB pin of the LM2596S-ADJ chip is electrically connected to the first fixed pin and sliding pin of the sliding rheostat, one end of capacitor C1, and one end of resistor R3, respectively. The second fixed pin of the sliding rheostat R2 is electrically connected to one end of resistor R1, the other end of capacitor C1 and the other end of resistor R1 are electrically connected to the positive electrode of the power supply terminal of the first liquid pump, and the other end of resistor R3 is electrically connected to the GND terminal. The positive electrode of capacitor C3 is electrically connected to the positive electrode of the power supply terminal of the first liquid pump, and the negative electrode is electrically connected to the GND terminal. The power supply voltage to the first liquid pump 2 can be changed by sliding the sliding end of the sliding rheostat R2. The sliding end of the sliding rheostat R2 is set on the outer surface of the box (indicated by serial number 40 in the figure), making it convenient for the user to change the resistance of the sliding rheostat R2. The specific formula is: Vout = Vref (1 + (R2 + R1) / R3), where Vref = 1.23V. In this way, the power of the first liquid pump can be changed by changing the resistance of the sliding rheostat R2. When the patient has a large amount of fluid accumulation, the resistance of the sliding rheostat R2 is increased, and the power supply voltage to the first liquid pump 2 is increased, thereby increasing the output power of the first liquid pump 2 and accelerating the suction of the effusion. When the patient has a small amount of fluid accumulation, the resistance of the sliding rheostat R2 is reduced, reducing the power supply voltage to the first liquid pump 2 and reducing the output power of the first liquid pump 2, which is beneficial for saving electricity.

[0042] The second power supply module 102 includes a 24V DC power supply, which is directly connected to the positive and negative poles of the power supply terminal of the second liquid pump 3. The side wall of the box body 1 is provided with a charging port 13 for charging the power supply module 10 and a switch 14 for controlling the operation of the first liquid pump 2 and the second liquid pump 3. In the circuit, the first liquid pump 2 and the second liquid pump 3 are represented by M1 and M2 respectively, the switch controlling the first liquid pump 2 is represented by K1, and the switch controlling the second liquid pump 3 is represented by K2.

[0043] A side opening for taking out and putting in the liquid collecting bottle 8 and the liquid storage bottle 9 is provided on the side wall of the box body 1 , and a side cover 15 is provided at the side opening.

[0044] When using the hepatobiliary drainage device of this embodiment, the plug 41 is inserted into the drainage tube, the switch valve 30 is closed, and the first liquid extraction pump 2 is activated to accelerate the drainage of the fluid accumulated in the liver and gallbladder, thereby improving the drainage efficiency. The drainage fluid will be collected in the liquid collection bottle 8. After the drainage is completed, the switch valve 30 is opened and the second liquid extraction pump 3 is activated to extract the flushing water in the liquid storage bottle 9 and flush the suction tube 4 to prevent the suction tube 4 from being blocked. This drainage device has the advantages of improving drainage efficiency and preventing pipeline blockage.

[0045] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present invention should be within the scope of protection of the present invention.

Claims

1. A drainage device for hepatobiliary medicine, characterized in that: It includes a box body, a first liquid pump, a second liquid pump, a suction tube, a liquid discharge tube, a flushing tube, a liquid suction tube, a liquid collection bottle, a liquid storage bottle and a power module; wherein, The box body is a hollow structure, and a partition is arranged inside the box body, which divides the inside of the box body into an upper chamber and a lower chamber; The first liquid pump and the second liquid pump are installed in the upper chamber of the box body; The liquid collecting bottle and the liquid storage bottle are arranged in the lower cavity of the box body, the liquid collecting bottle is used to store the accumulated liquid, and the liquid storage bottle is used to store the flushing water; One end of the suction tube is connected to the liquid inlet end of the first liquid pump, and the other end extends out of the box body, and a plug for inserting the drainage tube is provided at the end; One end of the liquid discharge pipe is connected to the liquid outlet end of the first liquid pump, and the other end passes through the partition plate and is connected to the liquid collecting bottle; One end of the flushing tube is connected to the liquid outlet end of the second liquid pump, and the other end passes out of the box and is connected to the pipeline of the suction tube; One end of the liquid extraction tube is connected to the liquid inlet end of the second liquid extraction pump, and the other end passes through the partition plate and is connected to the flushing water in the liquid storage bottle; The power supply module is arranged above the partition plate and is used for providing working voltage to the first liquid pump and the second liquid pump.

2. The hepatobiliary drainage device according to claim 1, characterized in that: The first liquid pump and the second liquid pump both include a motor, a mounting plate, a fixed plate, a rotating plate, blades and a cover body; the mounting plate is mounted on the front end surface of the motor, the fixed plate passes through the rotating shaft of the motor and is fixedly connected to the plate surface of the mounting plate, and the side wall of the fixed plate is provided with an external thread; the middle part of the rotating plate is fixedly connected to the rotating shaft of the motor, and the motor is used to drive the rotating plate to rotate; the blades are arc-shaped, and multiple blades are provided, and the circumference of the multiple blades is arranged on the front surface of the rotating plate; the cover body is arranged outside the fixed plate, the rotating plate and the blades, the inner wall of the cover body is provided with an internal thread connected to the external thread of the fixed plate, and the cover body is threadedly connected to the fixed plate; the side wall of the cover body is provided with a first pipe opening, and the front surface of the cover body is provided with a second pipe opening.

3. The hepatobiliary drainage device according to claim 1, characterized in that: The suction pipe is provided with a one-way valve on the pipeline outside the box, and the one-way valve is located above the intersection of the flushing pipe and the suction pipe; the flushing pipe is provided with a switch valve on the pipeline outside the box.

4. The hepatobiliary drainage device according to claim 3, characterized in that: The one-way valve includes a shell, a stopper, a spring and a limit ring; the shell is a hollow columnar structure with two ends penetrated; the interior of the shell is sequentially provided with a first channel, a second channel and a third channel; wherein the first channel and the third channel are both connected to the pipeline of the suction tube; the channel diameter of the first channel is smaller than the channel diameters of the second channel and the third channel; the stopper is arranged in the hollow part of the shell, and its front end is used to block in the first channel, and its rear end is located in the third channel and can slide in the third channel; the limit ring is arranged in the third channel; the spring is connected between the limit ring and the rear end face of the stopper, and the stopper can elastically move its front end away from the first channel and make the first channel, the second channel and the third channel conductive, or block the first channel and make the first channel, the second channel and the third channel non-conductive.

5. The hepatobiliary drainage device according to claim 4, characterized in that: The block includes a first block and a second block; the first block is in a truncated cone shape, the diameter of its top surface is smaller than the channel diameter of the first channel, the diameter of the cross section of its middle is equal to the channel diameter of the first channel, and the diameter of its bottom surface is larger than the channel diameter of the first channel, but smaller than the channel diameter of the second channel; the second block is in a cylindrical shape, the front end of which is connected to the bottom surface of the first block, and the rear end is located in the third channel, the diameter of the second block is equal to the bottom surface diameter of the first block, and smaller than the channel diameter of the third channel.

6. The hepatobiliary drainage device according to claim 4, characterized in that: The rear end face of the second stopper is provided with a groove sunken toward its front end; the upper surface of the second stopper located in the second channel is provided with a notch, which is connected to the groove; the end of the spring connected to the stopper is located in the groove and connected to the bottom wall of the groove.

7. The hepatobiliary drainage device according to claim 1, characterized in that: The power supply module includes a first power supply module and a second power supply module; the first power supply module provides a working voltage for the first liquid pump, and the second power supply module provides a working voltage for the second liquid pump.

8. The hepatobiliary drainage device according to claim 7, characterized in that: The first power supply module includes a 24V DC power supply, an LM2596S-ADJ chip, a resistor R1, a sliding rheostat R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3, an inductor L1 and a diode D1; the positive electrode of the 24V DC power supply is electrically connected to the positive electrode of the capacitor C2 and the VIN pin of the LM2596S-ADJ chip respectively; the negative electrode of the 24V DC power supply, the negative electrode of the capacitor C2, the ON / OFF pin and the GND pin of the LM2596S-ADJ chip are electrically connected to the GND end; the OUT pin of the LM2596S-ADJ chip is electrically connected to the negative electrode of the diode D1 and one end of the inductor L1 respectively, the positive electrode of the diode D1 is electrically connected to the GND end, and the other end of the inductor L1 is electrically connected to the supply of the first liquid pump. The positive electrode of the power end is electrically connected, and the negative electrode of the power supply end of the first liquid pump is electrically connected to the GND end; the FB pin of the LM2596S-ADJ chip is electrically connected to the first fixed pin and the sliding pin of the sliding rheostat, one end of the capacitor C1 and one end of the resistor R3 respectively, the second fixed pin of the sliding rheostat R2 is electrically connected to one end of the resistor R1, the other end of the capacitor C1 and the other end of the resistor R1 are electrically connected to the positive electrode of the power supply end of the first liquid pump, and the other end of the resistor R3 is electrically connected to the GND end; the positive electrode of the capacitor C3 is electrically connected to the positive electrode of the power supply end of the first liquid pump, and the negative electrode is electrically connected to the GND end; the size of the power supply voltage to the first liquid pump can be changed by sliding the sliding end of the sliding rheostat R2, and the sliding end of the sliding rheostat R2 is arranged on the outer surface of the box.

9. The hepatobiliary drainage device according to claim 1, characterized in that: The side wall of the box body is provided with a side opening for taking out and putting in the liquid collecting bottle and the liquid storage bottle, and a side cover is provided at the side opening.

10. The hepatobiliary drainage device according to claim 1, characterized in that: The side wall of the box is provided with a charging port for charging the power module and a switch for controlling the operation of the first liquid pump and the second liquid pump; and the upper surface of the box is provided with a handle.

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