In-vivo liquid discharge device

Abstract

The application discloses an in-vivo liquid drainage device, which aims to solve the problems that the liquid collection container of the existing device is separated from the drainage pump host, the patient is inconvenient to carry the container and the bacteria-containing liquid is easy to be leaked. The device comprises a drainage pump host, a liquid collection container detachably fixed to the pump shell and a drainage hose; the pump shell accommodating portion is provided with a pump side negative pressure interface, the corresponding surface of the liquid collection container is provided with a container side negative pressure interface, the drainage hose, the liquid collecting cavity and the container side negative pressure interface are sequentially communicated, the container side negative pressure interface is internally provided with a self-closing valve, the pump side negative pressure interface is internally provided with a thimble, the thimble opens the valve when the two are docked, and the valve is self-sealed when the two are separated. The application enables the patient to detach the host, carry the container alone under the intubation condition and perform examination, the upper interface of the liquid collection container can be automatically closed when being separated from the host, and the application has the advantages of convenient use, alleviation of the pain of the patient and prevention of pollution.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology and relates to an internal fluid excretion device, and more particularly to an excretion device that can draw out internal fluids by negative pressure. Background Technology

[0002] Internal fluid drainage devices are commonly used medical equipment in clinical surgery. Patients in thoracic surgery, respiratory medicine, and oncology departments who develop pleural effusion, ascites, or pneumothorax require drainage tubes inserted through an incision in the surgical area or body cavity. Negative pressure suction is used to drain pus, exudate, blood, tissue fluid, and other fluids accumulated in the tissues or body cavity, preventing postoperative infection due to fluid retention and promoting wound healing and recovery.

[0003] An internal fluid excretion device typically consists of three parts: an excretion pump, a fluid collection container, and a drainage tube. It works by using the excretion pump to generate negative pressure to draw fluid from the body through the drainage tube into the fluid collection container.

[0004] Currently, in existing intravenous fluid excretion devices, the collection container is detachably mounted on the pump unit. For example, CN101678157A discloses an excretion pump unit comprising: an excretion pump assembly having a pump housing for housing the inhalation pump; and a fluid collection container detachably fixed to the pump housing. Furthermore, the excretion pump unit has a connecting member on the pump side, the connecting member having a connecting element for connecting to an excretion tubing on the patient side. The connecting member is detachably held on the pump housing and has a connecting tube into which the connection hole of the fluid collection container can be inserted. Although the fluid collection container of this excretion pump unit can be detachably separated from the pump unit, after the fluid collection container is separated from the pump unit, the excretion tubing is still inserted into the connecting member and not into the fluid collection container, thus preventing the patient from using the fluid collection container alone while intubated. In addition, once the collection container is removed from the pump unit, the interface on the collection container that connects to the pump unit is exposed, which poses a risk of leakage of pathogen-containing liquids and gases in the collection container, and existing technologies have not adequately addressed this issue. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide an internal fluid collection device that allows the fluid collection container to be separated from the main body of the excretion pump, and allows the patient to continue to carry the fluid intubation after separation, without causing leakage of fluid and gas containing pathogens, so as to overcome the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An internal fluid excretion device, comprising: The main body of the excrement pump has a pump housing for accommodating the excrement pump; A liquid collection container, wherein the liquid collection container is detachably fixed to the pump housing; And the drain hose; The pump housing has a receiving portion for guiding the liquid collection container into which it is inserted, and a pump-side negative pressure port communicating with the discharge pump is provided on the surface of the receiving portion opposite to the liquid collection container. The features are as follows: the discharge hose is connected to the liquid collection container, the liquid collection container has a container-side negative pressure interface on the surface opposite to the pump housing, which is connected to the pump-side negative pressure interface, the discharge hose, the liquid collection chamber of the liquid collection container and the container-side negative pressure interface are connected in sequence, the container-side negative pressure interface is provided with a self-closing valve, and the pump-side negative pressure interface is provided with a pin that opens the self-closing valve in the container-side negative pressure interface when connected.

[0007] By adopting the above technical solution, this invention directly connects the excretion tubing to the liquid collection container and directly sets the container-side negative pressure interface in the liquid collection container to achieve direct docking with the pump-side negative pressure interface on the pump housing. Thus, when the liquid collection container is removed from the excretion pump unit, since the excretion tubing is connected to the liquid collection container, the liquid collection container will not separate from the excretion tubing. This allows patients to remove the liquid collection container from the excretion pump unit without separating the liquid collection container from the excretion tubing, and to carry the liquid collection container (without the excretion pump unit) into special medical examination settings (such as MRI scans where objects containing metal and electronic components are not permitted). This not only facilitates medical examinations for patients but also reduces their discomfort. By installing a self-sealing valve in the negative pressure port on the container side, once the liquid collection container is detached from the main unit of the drainage pump, the self-sealing valve will close the negative pressure port on the container side, thereby preventing the leakage of liquid and gas in the liquid collection container and avoiding pollution of the external environment. When the liquid collection container is installed on the main unit of the drainage pump, the pin in the negative pressure port on the pump side will push open the self-sealing valve, thereby maintaining the connection between the negative pressure port on the container side and the negative pressure port on the pump side, so that the internal liquid drainage device of the present invention can perform normal drainage work.

[0008] During the use of the internal fluid excretion device, the excretion hose needs to be cleaned regularly. Therefore, a service hose is also included. The service hose is connected to the fluid collection container. A pump-side service interface, communicating with a service unit inside the pump housing, is provided on the surface of the receiving part opposite to the fluid collection container. A container-side service interface, which mates with the pump-side service interface, is provided on the surface of the fluid collection container opposite to the pump housing. The service hose is directly connected to the container-side service interface. A self-closing valve is provided in the container-side service interface. A pin is provided in the pump-side service interface to open the self-closing valve in the container-side service interface during docking. This structure allows the service hose to be connected to the liquid collection container, with the container-side service interface located on the liquid collection container. This enables the liquid collection container, along with the service hose, to be separated from the main exhaust pump unit. Furthermore, the self-sealing valve in the container-side service interface seals the interface once the liquid collection container is detached from the main exhaust pump unit, preventing leakage of pathogen-containing gases from the service hose and avoiding environmental contamination. When the liquid collection container is installed on the main exhaust pump unit, the pin in the pump-side service interface opens the self-sealing valve, maintaining communication between the container-side and pump-side service interfaces, allowing the internal liquid excretion device of this invention to perform normal flushing operations.

[0009] In a specific embodiment of the present invention, the discharge hose and the service hose are a dual-channel pipe formed by an integral structure. Using a dual-channel pipe makes it easier to connect to a liquid collection container.

[0010] In a specific embodiment of the present invention, a liquid-blocking and air-permeable module is provided inside the liquid collection container, located between the negative pressure interface on the container side and the liquid collection chamber. By providing the liquid-blocking and air-permeable module, damage to the drain pump unit caused by liquid entering the drain pump unit can be prevented.

[0011] In a specific embodiment of the present invention, the liquid collection container is provided with a pipe inlet, the dual-channel pipe is inserted into the pipe inlet, the pipe inlet has a drain through hole and a service through hole, the drain hose is connected to the liquid collection chamber through the drain through hole, and the service hose is connected to the container-side service interface through the service through hole.

[0012] In a specific embodiment of the present invention, a connecting component is further included. The patient-side end of the connecting component has a patient-side interface, and the pump-side end has an outlet interface and a service interface spaced apart from each other. Internally, it has an outlet channel connecting the outlet interface and the patient-side interface, and a service channel connecting the service interface and the outlet channel. The outlet hose is connected to the outlet interface, and the service hose is connected to the service interface. The service channel is provided with a labyrinthine flow path that prevents liquid from entering the service hose from the outlet channel but does not affect gas from entering the outlet channel from the service hose. The outlet of the service channel connecting the outlet channel is located at the edge of the outlet channel and faces the outlet interface.

[0013] By designing the service channel as a labyrinthine flow path, liquid can be prevented from entering the service hose from the drain channel without affecting the flow of gas from the service hose into the drain channel. This offers the advantage of low pressure loss during gas flushing, and the high strength of the labyrinthine flow path also makes it less prone to damage. Furthermore, the vent is positioned at the edge of the drain channel, facing the drain hose. This ensures that the liquid flow direction aligns with the vent direction during liquid discharge, preventing any obstruction or resistance to liquid flow and guaranteeing smooth discharge. Simultaneously, it also prevents liquid from easily entering the service channel through the vent.

[0014] In a specific embodiment of the present invention, the connecting component is composed of an outer tube and an inner tube. The outer tube has a pump-side interface, and the discharge interface and the service interface are disposed within the pump-side interface. The inner tube has an insertion part inserted into the outer tube and an exposed part located outside the outer tube. The exposed part has a patient-side interface. A labyrinth groove structure is provided on the circumference of the insertion part and cooperates with the inner wall of the outer tube to form the labyrinth flow channel.

[0015] In a specific embodiment of the present invention, the labyrinth groove structure includes a first long groove and a second long groove extending axially along the insertion part and positioned opposite each other, and a first labyrinth groove and a second labyrinth groove distributed between the first long groove and the second long groove and positioned opposite each other. The inlet of the first long groove is connected to the service interface. One end of the first labyrinth groove is connected to the outlet of the first long groove, and the other end is connected to the inlet of the second long groove. One end of the second labyrinth groove is connected to the outlet of the second long groove, and the other end is connected to the vent. This structure, on the one hand, makes the service channel longer and more tortuous, and on the other hand, changes the direction of the service channel, reversing its direction so that the vent ultimately faces the drain hose. These measures all make it difficult for liquid to enter the service hose through the service channel. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the internal fluid collection device of the present invention; Figure 2 This is a schematic diagram of the internal fluid collection device of the present invention from another perspective. Figure 3 This is a schematic diagram of the structure of the main unit of the drainage pump of the present invention; Figure 4 This is a schematic diagram of the structure of the liquid collection container of the present invention; Figure 5 This is a top view of the liquid collection container of the present invention; Figure 6 for Figure 5 A partial cross-sectional view along line AA, located at the negative pressure interface on the container side; Figure 7 for Figure 5 A partial cross-sectional view of the BB (Browser Layout) located at the container-side service interface; Figure 8 for Figure 5 Schematic diagram of the cross section along the CC direction; Figure 9 This is a schematic diagram of the structure of the dual-channel tube of the present invention; Figure 10 This is a schematic diagram showing the connection between the connecting component and the dual-channel tube of the present invention; Figure 11 This is a top view of the connection between the connecting component and the dual-channel tube of the present invention; Figure 12 This is a front view of the connection between the connecting component and the dual-channel tube of the present invention; Figure 13 for Figure 11 Schematic diagram of the cross section along the DD direction; Figure 14 for Figure 12 Schematic diagram of the cross section in the middle EE direction; Figure 15 This is a schematic diagram of the internal pipe structure; Figure 16 A schematic diagram of the internal pipe structure from another perspective; Figure 17 A schematic diagram of the internal structure of the pump-side interface for the external nozzle, as seen from the pump side. Figure 18 This is a schematic diagram of the internal structure of the pump-side interface of the external tube, as seen from the patient's side. Detailed Implementation

[0017] like Figure 1 As shown, the body fluid excretion device of the present invention includes an excretion pump main unit 100, a liquid collection container 200, and a dual-channel tube 300.

[0018] Combination Figures 2 to 4As shown, the main unit 100 of the sewage pump includes a pump housing 110, which houses the sewage pump, a service unit, and various electronic devices that enable the sewage pump and service unit to operate normally. An operation panel 111 with a display screen 111a is provided on the top surface of the pump housing 110.

[0019] The liquid collection container 200 is detachably mounted on the pump housing 110 of the main pump unit 100. Specifically, the two sides of the pump housing 110 opposite to the liquid collection container 200 (i.e., the first end face 112) have outwardly protruding convex edges 113, which form receiving portions 120 for guiding the liquid collection container 200 into place. The lower inner walls of the two convex edges 113 are provided with a pair of opposing lower guide grooves 113a, and the upper inner walls of the two convex edges 113 are provided with a pair of opposing upper guide grooves 113b. The corresponding positions on the two sides of the liquid collection container 200 that mate with the convex edges 113 are respectively provided with lower protrusions 211a and upper protrusions 211b. The top of the surface of the liquid collection container 200 opposite to the pump housing 110 (i.e., the second end face 211) is also provided with a buckle 212, and the top of the first end face 112 of the pump housing 110 is provided with an elastic pressing hook 114 that can hook the buckle 212. During assembly, the two lower protrusions 211a of the liquid collection container 200 first engage in the lower guide groove 113a of the receiving part 120, and then push the upper part of the liquid collection container 200 so that the liquid collection container 200 rotates with the position of the lower protrusions 211a as the center of rotation. By rotating the liquid collection container 200 towards the pump housing 110, the upper protrusion 211b is engaged in the upper guide groove 113b until it is pushed all the way in. At this time, the elastic pressing hook 114 on the pump housing 110 will hook the buckle 212 on the liquid collection container 200, so that the liquid collection container 200 is fixed on the pump housing 110 of the discharge pump host 100. When disassembly is required, simply press the elastic pressing hook 114 on the pump housing 110 to disengage the elastic pressing hook 114 from the buckle 212 on the liquid collection container 200. Then, pull the upper part of the liquid collection container 200 to disengage the upper protrusion 211b from the upper guide groove 113b by rotating the liquid collection container 200 towards the container side. Finally, pull out the two lower protrusions 211a of the liquid collection container 200 from the lower guide groove 113a of the receiving part 120 to separate the liquid collection container 200 from the drain pump main unit 100.

[0020] The top of the first end face 112 of the pump housing 110 is provided with a pump-side negative pressure interface 501a and a pump-side service interface 502a arranged side by side at intervals. The pump-side negative pressure interface 501a is connected to the discharge pump inside the pump housing 110, and the pump-side service interface 502a is connected to the service unit inside the pump housing 110.

[0021] Combination Figure 8 As shown, the liquid collection container 200 is made of plastic and has an inclined partition 201 inside. The inclined partition 201 divides the interior of the liquid collection container 200 into a lower liquid collection chamber 220 and an upper gas chamber 221. A container-side negative pressure port 501b and a container-side service port 502b are spaced apart on the second end face 211 of the liquid collection container 200, corresponding to the top of the gas chamber 221. A first gap 202 exists between the inclined partition 201 and the side wall of the liquid collection container 200. A vertical partition 203 is located in the middle of the liquid collection chamber 220. The upper end of the vertical partition 203 is connected to the inclined partition 201, and a second gap 204 exists between its lower end and the bottom of the liquid collection container 200. The inclined baffle 201 serves to allow liquid falling onto it to slide into the liquid collection chamber 220. It also prevents liquid in the liquid collection chamber 220 from flowing back into the gas chamber 221, thus effectively blocking liquid from entering the gas chamber. The vertical baffle 203 divides the liquid collection chamber 220, stabilizing the liquid and reducing its sloshing within the chamber.

[0022] A horizontal tube inlet 213 is provided at the upper corner of the liquid collection container 200 on the patient side (i.e., on the outside of the liquid collection container 200 away from the main body of the excretion pump 100). The dual-channel tube 300 is inserted into this tube inlet 213.

[0023] like Figure 9 As shown, the dual-channel pipe 300 has two channels with an integral structure, which respectively form a drain hose 310 and a service hose 320.

[0024] Again Figure 7 As shown, the lower part of the end wall of the tube inlet 213 has a drain hole 213a communicating with the liquid collection chamber 220, and the top of the peripheral wall has a service hole 213b communicating with the container-side service interface 502b. A bypass hole 321 is provided on the periphery of the service hose 320 near its end. When the dual-channel tube 300 is inserted into the tube inlet 213, the end wall of the tube inlet 213 will seal the end outlet of the service hose 320, aligning and communicating the bypass hole 321 of the service hose 320 with the service hole 213b in the tube inlet 213, and aligning and communicating the end outlet of the drain hose 310 with the drain hole 213a in the tube inlet 213. In this embodiment, the upper part of the end wall of the tube inlet 213 is provided with a protrusion 213c for inserting into and sealing the end outlet of the service hose 320. The protrusion 213c makes the dual-channel tube 300 more securely inserted into the tube socket 213 and less likely to fall out. It can also effectively block the end outlet of the service hose 320, ensuring that only the bypass hole 321 of the service hose 320 is aligned and connected with the service through hole 213b in the tube socket 213.

[0025] For example Figure 8 As shown, the gas chamber 221 is provided with a filter chamber 230 and a negative pressure chamber 240 that is connected to the filter chamber 230 but isolated from the liquid collection chamber 220.

[0026] The negative pressure chamber 240 covers the container-side negative pressure interface 501b inside the liquid collection container 200. The lower part of the filter chamber 230 has an opening communicating with the liquid collection chamber 220. A liquid-blocking and gas-permeable module 231 is sealed and fixed to this opening. This module 231 has a liquid-blocking and gas-permeable membrane. The side of the filter chamber 230 above the liquid-blocking and gas-permeable module 231 communicates with the negative pressure chamber 240 through a hole. In this way, the liquid-blocking and gas-permeable module 231 further prevents liquid from passing through, allowing only gas to enter the negative pressure chamber 240, and then enter the discharge pump main unit 100 via the container-side negative pressure interface 501b and the pump-side negative pressure interface 501a, protecting the discharge pump and related electronic components from liquid corrosion and damage.

[0027] like Figure 5 , Figure 6 and Figure 7 As shown, in order to enable the container-side negative pressure interface 501b and the container-side service interface 502b to automatically close after the liquid collection container 200 is disconnected from the drain pump host 100, and to prevent leakage of liquid or gas containing pathogens in the liquid collection container 200 and gas containing pathogens in the service hose, the container-side negative pressure interface 501b and the container-side service interface 502b are also equipped with self-closing valves 600.

[0028] Both the container-side negative pressure interface 501b and the container-side service interface 502b include an opening 511 and an interface channel 512 located inside the opening 511. In this embodiment, the interface channel 512 of the container-side negative pressure interface 501b is connected to the negative pressure cavity 240 through a hole; the interface channel 512 of the container-side service interface 502b is directly connected to the service through hole 213b.

[0029] The self-closing valve 600 includes a spring seat 601 fixed within an interface channel 512 by a bracket, a valve core 602 movable within the interface channel 512 and positioned towards the opening 511, and a spring 603 positioned within the interface channel 512 and between the spring seat 601 and the valve core 602. In the normally closed state, the valve core 603 is pressed and sealed against the opening 511 by the elastic force of the spring 603.

[0030] For example Figure 3 As shown, both the pump-side negative pressure interface 501a and the pump-side service interface 502a have sealing gaskets 521 at their opening edges and outward protruding pins 522 inside.

[0031] When the liquid collection container 200 is installed on the discharge pump main unit 100, such that the container-side negative pressure port 501b is connected to the pump-side negative pressure port 501a, and the container-side service port 502b is connected to the pump-side service port 502a, the sealing gasket 521 seals the interface gaps to prevent leakage, while the ejector pin 522 pushes open the valve core 603 of the closed port 511, opening the self-closing valve 600, thereby ensuring that during operation, the container-side negative pressure port 501b and the pump-side negative pressure port are connected. The service interface 501a is connected to the container side service interface 502b, which is connected to the pump side service interface 502a. This allows the liquid in the human body to be drawn into the collection chamber 220 of the liquid collection container 200 through the drainage pump via the drainage hose 310. Alternatively, the service unit blows out cleaning gas through the service hose 320 and into the drainage hose 310 via the connection part 800 near the patient's body to flush the liquid attached to the drainage hose 310 and keep the drainage hose 310 unobstructed.

[0032] like Figure 10-14 As shown, the connecting component 800 has a patient-side interface 801 at the patient-side end (the patient-side interface 801 is used to connect the cannula inserted into the aspiration site of the human body), and a discharge interface 802 and a service interface 803 spaced apart from each other at the pump-side end. Internally, it has a discharge channel 804 and a service channel 805. The discharge channel 804 connects the discharge interface 802 and the patient-side interface 801, and all three are on the same straight line. The service channel 805 connects the service interface 803 and the discharge channel 804. In this invention, the air outlet 804a of the service channel 805, which connects to the discharge channel 804, is located at the edge of the discharge channel 804 and faces the discharge hose 310.

[0033] Specifically, the connecting component 800 is formed by connecting an outer pipe 810 and an inner pipe 820. One end of the outer pipe 810 (i.e., the pump side end) is the pump side interface 811, and the other end is the pipe opening 810a. Figure 18 (As shown in the image). The discharge port 802 and the service port 803 are located within the pump-side port 811.

[0034] like Figures 13 to 16 As shown, the inner tube 820 is composed of three sections (i.e., the first section 820a, the second section 820b, and the third section 820c) connected to form a whole. This whole is divided into an insertion part 830, which is inserted into the outer tube 810 through the tube opening 810a, and an exposed part 822, which is exposed outside the outer tube 810. The exposed part 822 has a conical structure and a non-slip ridge on its surface, forming a patient-side interface 801 (for connecting the cannula inserted into the human body). The insertion part 830 of the inner tube 820 is inserted into the outer tube 810, and the pump-side end face of the step 821 blocks the tube opening 810a of the outer tube 810.

[0035] In this invention, a labyrinth flow channel 840 is provided in the service channel 805. The labyrinth flow channel 840 can prevent liquid from entering the service hose 320 from the drain channel 804, but does not affect the gas from entering the drain channel 804 from the service hose 320.

[0036] like Figure 17 and Figure 18 As shown, the pump-side interface 811 of the external pipe 810 is provided with a first baffle 811a, a second baffle 812, and a partition 813 connecting the first baffle 811a and the second baffle 812 to form an outer opening 814 and an inner air chamber 815 spaced apart from the opening 814. Furthermore, the first baffle 811a is also provided with a protruding insertion tube 816 that protrudes outward and communicates with the air chamber 815. The protruding insertion tube 816 serves as a service interface 803, and the opening 814 serves as a discharge interface 802. The diameter of the opening 814 is much larger than the diameter of the protruding insertion tube 816.

[0037] In this embodiment, the opening 814 has a semi-circular outer opening 814a located on the first baffle 811a and a circular inner opening 814b located on the second baffle 812. The diameter of the inner opening 814b is smaller than the diameter of the outer opening 814a.

[0038] Combined Figure 15 and Figure 16 As shown, specifically, the labyrinth channel 840 is formed by providing a labyrinth groove structure 831 on the circumference of the insertion portion 830 and engaging with the inner wall of the outer tube 810. The labyrinth groove structure 831 includes a first long groove 831a, a second long groove 831b, a first labyrinth groove 831c, and a second labyrinth groove 831d disposed on the circumference of the insertion portion 830. The first long groove 831a and the second long groove 831b extend axially along the insertion portion 830 and are positioned opposite each other. The first labyrinth groove 831c and the second labyrinth groove 831d are located between the first long groove 831a and the second long groove 831b, and are also positioned opposite each other. The inlet at the beginning of the first long groove 831a communicates with the protruding insertion tube 816 via the air chamber 815. One end of the first labyrinth groove 831c is connected to the tail outlet of the first long groove 831a, and the other end is connected to the head inlet of the second long groove 831b. One end of the second labyrinth groove 831d is connected to the tail outlet of the second long groove 831b, and the other end is connected to the air outlet 804a of the service channel 805.

[0039] In this embodiment, the insertion part 830 is inserted into the outer pipe 810, and the insertion end of the insertion part 830 abuts against the inner surface of the second baffle 812. Two positioning plugs 832 are symmetrically arranged on the end face of the insertion end of the insertion part 830. One positioning plug 832 has an air outlet 804a, and the other positioning plug 832 is a solid plug. Correspondingly, the second baffle 812 is also provided with positioning holes 814d symmetrically located on both sides of the inner opening 814b of the opening 814. The positioning holes 814d communicate with the interior of the opening 814, and the inner opening of the opening 814 has an inwardly protruding annular flange 814c. The annular flange 814c is inserted into the discharge channel of the insertion part 830, and the two positioning plugs 832 are respectively inserted into the two positioning holes 814d. In this way, the inner pipe 820 and the outer pipe 810 are accurately positioned and firmly connected, and the air outlet 804a of the service channel 805 is located in the opening 814 and is close to and facing the drain hose 310.

[0040] When it is necessary to aspirate fluid from the human body, the fluid is drawn into a fluid collection container through the patient-side interface 801, the discharge channel 804, and the discharge hose 310 using negative pressure suction. The labyrinth flow channel structure of the service channel 805 causes the direction of the service channel to be reversed (i.e., the service channel has a reversing structure) so that the vent is located near the edge of the discharge hose 310 in the discharge channel 804 and faces the discharge interface 802. The vent 804a does not affect the discharge of the fluid and does not create resistance to the discharge of the fluid, ensuring smooth discharge of the fluid. On the other hand, since the orientation of the vent 804a is consistent with the direction of the fluid discharge, the fluid is less likely to enter the service channel 805 through the vent 804a when the fluid is discharged. Even if a small amount of liquid enters the service channel 805, the labyrinthine flow path within it, which operates under negative pressure during liquid discharge, further obstructs the flow of liquid into the service hose 320 due to its length and more tortuous path. This prevents liquid from flowing into the connected drain pump unit, thus avoiding damage. When flushing the drain hose 310 is required, high-pressure gas can be introduced through the service hose 320 via the service channel 805 and drain channel 804 to flush both the drain channel 804 and the drain hose 310. Again, the labyrinthine flow path within the service channel 805 does not impede gas flow. Furthermore, the multi-stage obstruction of the labyrinthine flow path eliminates the need for small orifices like a breathable membrane, allowing for a larger flow path size. This results in lower pressure loss and a greater amount of gas passing through, leading to better flushing performance. Because the labyrinth flow channel is formed directly on the inner pipe 820, it has high strength and will not be damaged during use, making it durable.

[0041] In addition, such as Figure 2 and Figure 4 As shown, a pressure relief valve 610 and a removable sealing cap 611 are also provided on the second end face 211. The pressure relief valve 610 prevents excessive gas pressure inside the liquid collection container 200. When the gas pressure inside the liquid collection container 200 is too high, the pressure relief valve 610 will automatically open to release pressure. The sealing cap 611 can be used to seal the pressure relief valve 610 when the liquid collection container 200 is disposed of and recycled, preventing liquid and gas leakage from the liquid collection container 200 and causing pollution. The main unit of the discharge pump 100 is provided with a handle 130 for lifting.

[0042] This invention directly inserts a dual-channel tube 300, comprising an integrated structure of an excretion hose 310 and a service hose 320, into the liquid collection container 200. A container-side negative pressure interface 501b and a container-side service interface 502b are directly provided on the surface opposite to the pump housing 110. This allows the liquid collection container 200, along with the excretion hose 310 and the service hose 320, to connect to and disconnect from the excretion pump host 100. This enables patients to enter special medical examination settings with only the liquid collection container 200 and without the excretion pump host 100 while the tube is inserted, providing convenience and reducing patient discomfort. Furthermore, by incorporating self-closing valves 600 within the container-side negative pressure interface 501b and the container-side service interface 502b, the negative pressure interface 501b and the service interface 502b can be automatically closed when the liquid collection container 200 is separated from the excretion pump host 100, preventing liquid and gas leakage.

[0043] The above describes the internal fluid excretion device of the present invention. This device has multiple significant advantages, demonstrating outstanding performance in terms of safety, patient convenience, and functional reliability: Firstly, the fluid collection container and the excretion pump main unit are detachable, and the excretion hose is always connected to the container. Patients can easily access the device when undergoing special examinations such as MRI (where metal-containing devices are prohibited). When inspecting electronic components (such as the pump unit), there is no need to remove the internal tubing; only the liquid collection container needs to be carried into the inspection area, greatly improving the convenience of the inspection and reducing physical discomfort. Secondly, the container side negative pressure and service interface are equipped with self-sealing valves. The valves automatically close after the liquid collection container is detached from the pump unit. Combined with the pin design of the pump side interface (the valve opens when docking), it can effectively prevent liquid and gas leakage and avoid polluting the external environment. Thirdly, the liquid collection container is equipped with a liquid-blocking and gas-permeable module, which can prevent liquid from entering the discharge pump unit and protect the pump and electronic components from damage. Fourthly, the service channel in the connecting component adopts a labyrinth flow channel design, which can prevent liquid from entering the service hose from the discharge channel without affecting the gas flow to achieve hose flushing. The flow channel has high strength and is not easily damaged. At the same time, the air outlet faces the discharge hose, which does not obstruct the liquid discharge and further reduces the probability of liquid entering the service channel. In addition, the inclined baffle and vertical baffle in the liquid collection container can respectively prevent liquid backflow and stabilize the accumulated liquid to reduce shaking. The overall device is functional, practical and reliable.

Claims

1. A device for excreting bodily fluids, comprising: The main body of the excrement pump has a pump housing for accommodating the excrement pump; A liquid collection container, wherein the liquid collection container is detachably fixed to the pump housing; And the drain hose; The pump housing has a receiving portion for guiding the liquid collection container into which it is inserted, and a pump-side negative pressure port communicating with the discharge pump is provided on the surface of the receiving portion opposite to the liquid collection container. The liquid collection container has a container-side negative pressure interface on the surface opposite to the pump housing, which is connected to the pump-side negative pressure interface. The discharge hose, the liquid collection chamber of the liquid collection container, and the container-side negative pressure interface are connected in sequence. The features are as follows: the discharge hose is directly connected to the liquid collection container, a self-closing valve is provided in the container-side negative pressure interface, and a pin is provided in the pump-side negative pressure interface to open the self-closing valve in the container-side negative pressure interface when docking; It also includes a service hose connected to the liquid collection container. The receiving part has a pump-side service interface on the surface opposite to the liquid collection container, which communicates with the service unit inside the pump housing. The liquid collection container has a container-side service interface on the surface opposite to the pump housing, which connects to the pump-side service interface. The service hose is directly connected to the container-side service interface. The container-side service interface has a self-closing valve. The pump-side service interface has a pin that opens the self-closing valve in the container-side service interface when docking. It also includes a connecting component, the patient-side end of which has a patient-side interface, and the pump-side end has an outlet interface and a service interface spaced apart from each other. Internally, it has an outlet channel connecting the outlet interface and the patient-side interface, and a service channel connecting the service interface and the outlet channel. The outlet hose is connected to the outlet interface, and the service hose is connected to the service interface. The service channel has a labyrinthine flow path that prevents liquid from entering the service hose from the outlet channel but does not affect gas from entering the outlet channel from the service hose. The outlet of the service channel connecting to the outlet channel is located at the edge of the outlet channel and faces the outlet interface. The connecting component consists of an outer pipe and an inner pipe.

2. The internal fluid excretion device according to claim 1, characterized in that, The discharge hose and the service hose are a dual-channel pipe formed by an integral structure.

3. The internal fluid excretion device according to claim 1 or 2, characterized in that, The liquid collection container is equipped with a liquid-blocking and air-permeable module located between the negative pressure port on the container side and the liquid collection chamber.

4. The internal fluid excretion device according to claim 2, characterized in that, The liquid collection container is provided with a pipe inlet, and the dual-channel pipe is inserted into the pipe inlet. The pipe inlet has a drain hole and a service hole. The drain hose is connected to the liquid collection chamber through the drain hole, and the service hose is connected to the container-side service interface through the service hole.

5. The internal fluid excretion device according to claim 1, characterized in that, Both the container-side negative pressure interface and the container-side service interface include an opening and an interface channel located inside the opening. The self-closing valve includes a spring seat fixed in the interface channel, a valve core that is movable in the interface channel and moves toward the opening, and a spring located in the interface channel between the spring seat and the valve core for pressing and sealing the opening with the valve core.

6. The internal fluid excretion device according to claim 1, characterized in that, The outer tube has a pump-side interface, the discharge interface and the service interface are disposed within the pump-side interface, the inner tube has an insertion part inserted into the outer tube and an exposed part located outside the outer tube, the exposed part has the patient-side interface, and a labyrinth groove structure is provided on the circumference of the insertion part and cooperates with the inner wall of the outer tube to form the labyrinth flow channel.

7. The internal fluid excretion device according to claim 6, characterized in that, The labyrinth groove structure includes a first long groove and a second long groove extending axially along the insertion part and positioned opposite each other, and a first labyrinth groove and a second labyrinth groove distributed between the first long groove and the second long groove and positioned opposite each other. The inlet of the first long groove is connected to the service interface. One end of the first labyrinth groove is connected to the outlet of the first long groove and the other end is connected to the inlet of the second long groove. One end of the second labyrinth groove is connected to the outlet of the second long groove and the other end is connected to the air outlet.

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