JP2019025287A - Waste liquid suction device, method and washing method of waste liquid suction device - Google Patents

Abstract

To provide a waste liquid suction device capable of continuing suction of a waste liquid from outside to a first closed vessel, and transferring a waste liquid from a first closed vessel to a second closed vessel.SOLUTION: A waste liquid suction device 10 comprises: a first closed vessel 11 having a first liquid suction port 15 and a first liquid discharge port 16, and storing a waste liquid which is sucked from outside through the first liquid suction port 15; a second closed vessel 12 which stores a waste liquid transferred from the first closed vessel 11 through the second liquid suction port 26 connected to the first liquid discharge port 16; and a gas suction passage 23 for sucking gas from the first closed vessel 11 and the second closed vessel 12, in which, the gas is sucked through the gas suction passage 23, for forming a state in which, negative pressure is formed in both of the first closed vessel 11 and the second closed vessel 12, therefore, the waste liquid is sucked to the first closed vessel 11 and pressure difference is generated between the first closed vessel 11 and the second closed vessel 12, for transferring the waste liquid from the first closed vessel 11 to the second closed vessel 12.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a waste liquid suction apparatus that sucks waste liquid generated in a medical field, a waste liquid suction method, and a cleaning method for a waste liquid suction apparatus.

  2. Description of the Related Art Conventionally, a waste liquid suction device has been used to suck waste liquid (such as blood and physiological saline generated during surgery) generated at a medical site. Patent Document 1 describes a waste collection unit that collects waste material generated during a medical procedure.

  Specifically, the waste collection unit described in Patent Document 1 includes an upper waste container to which a first suction line is connected and a lower waste container to which a second suction line is connected. . In the waste collection unit, a vacuum source applies a vacuum into the waste container and draws the waste material into the waste container canister through a suction line. In the waste collection unit, a switching valve is disposed between the waste containers, and the waste material can be transferred from the upper waste container to the lower waste container by opening the switching valve.

JP 2014-131760 A

  By the way, conventionally, when transferring the waste material from the upper waste container to the lower waste container with the switching valve opened, at the moment when all the waste material is discharged from the upper waste container, The waste container leads to the gas space of the lower waste container. Therefore, if the waste material is transferred while sucking the waste material from the outside into the upper waste container, the internal pressure of the upper waste container will increase greatly at the moment when all the waste material is discharged from the upper waste container. However, the suction of the waste material from the outside may temporarily stop.

  The present invention has been made in view of such circumstances, and in a waste liquid suction device including at least two sealed containers, the first sealed container is continuously sucked from the outside into the first sealed container. An object of the present invention is to provide a waste liquid suction device capable of transferring a waste liquid from a second container to a second sealed container.

  In order to solve the above-described problem, a first invention is a waste liquid suction device that sucks waste liquid generated in a medical field, and is provided with a first liquid suction port and a first liquid discharge port. A first closed container for storing waste liquid sucked from the outside through the port and a second liquid suction port connected to the first liquid discharge port are provided and transferred from the first closed container through the second liquid suction port. A second airtight container for storing waste liquid; and a gas suction passage for sucking gas from the first airtight container and the second airtight container, and gas from the first airtight container and the second airtight container through the gas suction passage. The first sealed container and the second sealed container are sucked into the first sealed container by sucking waste liquid into the first sealed container by forming a negative pressure in both the first sealed container and the second sealed container. Causing a differential pressure in the first liquid discharge port and the first Effluent from the first closed vessel to the second closed casing is configured to be transported through the liquid suction port.

  According to a second aspect of the present invention, in the first aspect of the present invention, as the gas suction passage, the branch suction branching on the way to the first gas suction pipe connected to the first sealed container and the second gas suction pipe connected to the second sealed container A passage and a connection suction passage connecting the first sealed container and the second sealed container are provided, and the second gas suction is performed while the first gas suction pipe is closed during a period of sucking the gas from the outlet of the branch suction passage. A suction switching unit capable of switching between a first state in which the tube is in an open state and a second state in which both the first gas suction tube and the second gas suction tube are in an open state; During the period set in the first state, the gas in the first sealed container is sucked into the second sealed container through the connection suction passage.

  According to a third invention, in the first or second invention, a compressed gas port for introducing compressed gas from the outside is provided, a pressure tank for storing the compressed gas introduced from the compressed gas port, and a first hermetic seal A compressed gas supply pipe for supplying the compressed gas in the pressure tank to at least one of the container and the second sealed container; and an open / close mechanism for opening and closing the compressed gas supply pipe. The pressure tank is provided in the second sealed container. Is arranged.

  In a fourth aspect based on the first aspect, the gas suction passage is branched and branched into the first gas suction pipe connected to the first sealed container and the second gas suction pipe connected to the second sealed container. A negative pressure adjusting unit that has a passage and adjusts the flow rate of the gas flowing through the first gas suction pipe is further provided.

  According to a fifth invention, in the fourth invention, as the negative pressure adjusting portion, the pressure regulator provided in the first gas suction pipe and the first gas suction pipe when the liquid level exceeds a predetermined water level in the first sealed container A float valve is provided for closing.

  In a sixth aspect based on any one of the first to fifth aspects, the volume of the first sealed container is smaller than the volume of the second sealed container.

  According to a seventh invention, in any one of the first to sixth inventions, the first liquid discharge port is open to the bottom surface of the first sealed container.

  An eighth invention is a waste liquid suction device for sucking waste liquid generated at a medical site, and is provided with a liquid suction port for sucking waste liquid from the outside and a liquid discharge port for discharging the sucked waste liquid. A compressed gas port for introducing compressed gas from the outside, a pressure tank for storing the compressed gas introduced from the compressed gas port, and supplying the compressed gas in the pressure tank to the sealed container A pressure gas supply pipe and an open / close mechanism for opening and closing the compressed gas supply pipe are provided, and the pressure tank is disposed in the sealed container.

  A ninth invention is a waste liquid suction method for sucking a waste liquid generated in a medical field, wherein a gas is sucked from the first sealed container and the second sealed container, so that the first sealed container and the second sealed container A state in which a negative pressure is formed on both sides, a step of sucking external waste liquid from the first liquid suction port provided in the first sealed container to the first sealed container, and external waste liquid from the first liquid suction port While sucking into the first airtight container, a differential pressure is generated between the first airtight container and the second airtight container, and the first airtight container and the second airtight container are connected to each other through the container connection passage that connects the first airtight container and the second airtight container. 2 The step of transferring the waste liquid to the sealed container is performed.

  A tenth aspect of the invention is a cleaning method for cleaning the waste liquid suction device according to any one of the first to eighth aspects of the invention, supplying cleaning water to each of the first sealed container and the second sealed container, The step of cleaning each of the first sealed container and the second sealed container, and discharging the first liquid by sucking gas from at least the second sealed container among the first sealed container and the second sealed container through the gas suction passage. A step of transferring sewage in the first sealed container to the second sealed container through the port and the second liquid suction port is performed.

  In the first invention, when gas is sucked through the gas suction passage, negative pressure is formed in both the first sealed container and the second sealed container. In the first sealed container, a suction force acts on the first liquid suction port, and external waste liquid is sucked through the first liquid suction port. For example, when the waste liquid is sucked into the first sealed container at the medical site, if air is mixed, a differential pressure is generated between the first sealed container and the second sealed container (the internal pressure of the first sealed container is the second sealed container). The waste liquid in the first sealed container is transferred to the second sealed container through the first liquid discharge port and the second liquid suction port. Further, for example, when the gas in the first sealed container is sucked through the second sealed container, or when the waste liquid suction device is configured so that the internal pressure of the first sealed container is adjusted, the gas is mixed. Even if not, the waste liquid in the first sealed container is transferred to the second sealed container. According to the first invention, it is possible to provide a waste liquid suction device capable of transferring waste liquid from the first sealed container to the second sealed container while continuing to suck the waste liquid from the outside to the first sealed container.

  In the second invention, the gas in the first sealed container is sucked into the branch suction passage through the second sealed container during the period when the suction switching unit is set to the first state. On the other hand, during the period when the suction switching unit is set to the second state, the gas in the first sealed container is directly sucked into the branch suction passage. In the second state, the internal pressure of the first sealed container is lower than in the first state, and the suction force acting on the first liquid suction port is increased. According to 2nd invention, the suction force which acts on the generation | occurrence | production location of a waste liquid can be adjusted by switching a suction switching part.

  In the third invention, the compressed gas can be supplied to at least one of the first sealed container and the second sealed container, and the liquid is discharged from the sealed container without using electrical equipment such as a pump. Can be made. And since the pressure tank is arrange | positioned in the 2nd airtight container, it can suppress that a waste-liquid suction device enlarges by providing a pressure tank.

  In the fourth aspect of the invention, for example, during the period in which the gas is sucked from both the first sealed container and the second sealed container through the branch suction passage, the flow rate of the gas flowing through the first gas suction pipe is reduced so that the first sealed The amount of waste liquid transferred from the first sealed container to the second sealed container can be increased by increasing the differential pressure between the container and the second sealed container.

  In the fifth invention, a pressure regulator and a float valve are provided as the negative pressure adjusting unit. Here, when there is a possibility that the patient's tissue may be damaged by the suction force, by reducing the opening of the pressure regulator, the internal pressure of the first sealed container is increased, and the suction force acting on the location where the waste liquid is generated is reduced. Can be small. In this case, the differential pressure between the first sealed container and the second sealed container increases, and the amount of waste liquid transferred from the first sealed container to the second sealed container increases. On the other hand, when it is desired to increase the amount of suction of the waste liquid, by increasing the opening of the pressure regulator, the internal pressure of the first sealed container is lowered, and the suction force acting on the waste liquid generation location is increased. In this case, since the differential pressure between the first sealed container and the second sealed container is small and the amount of waste liquid transferred from the first sealed container to the second sealed container is small, the waste liquid may accumulate in the first sealed container. is there. In such a case, when the liquid level rises in the first sealed container and buoyancy acts on the float valve, the valve body approaches the valve seat in the float valve and the opening degree decreases, and the gas flow rate flowing through the first gas suction pipe Decreases. And the differential pressure | voltage of a 1st airtight container and a 2nd airtight container becomes large, and the transfer amount of the waste liquid from a 1st airtight container to a 2nd airtight container increases. According to the fifth aspect, the suction force acting on the location where the waste liquid is generated can be adjusted, and the waste liquid can be transferred to the second sealed container without overflowing the waste liquid in the first sealed container.

  In the sixth invention, the volume of the first sealed container is smaller than the volume of the second sealed container. Here, when the volume of the first sealed container and that of the second sealed container are the same, if the total volume of the first sealed container and the second sealed container is increased so that a large amount of waste liquid can be stored, the external waste liquid is sucked. When this is done, the time required to reduce the internal pressure of the first sealed container becomes longer, and the suction responsiveness decreases. On the other hand, if the volume of the first sealed container is smaller than the volume of the second sealed container, even if the total volume is the same as compared to the case where the volume of the first sealed container and the second sealed container is the same, The time required to reduce the internal pressure of the first sealed container is short, and the suction response is improved. According to the sixth aspect of the present invention, it is possible to provide a waste liquid suction device with good suction responsiveness.

  In the seventh invention, since the first liquid discharge port is opened at the bottom surface of the first sealed container, after the operation of sucking the external waste liquid into the first sealed container is completed, All the waste liquid can be transferred to the second sealed container, and the waste liquid sucked from the outside can be collected in the second sealed container.

  Further, in the eighth invention, similarly to the third invention, it is possible to discharge the liquid from the sealed container using the pressure tank, but it is possible to suppress the waste liquid suction device from being enlarged. .

Schematic configuration diagram of a waste liquid suction device according to an embodiment Schematic configuration diagram of control unit (A) The figure for demonstrating the state immediately after the start of suction operation, (b) The figure for demonstrating the state where the opening degree of the float valve of the 1st airtight container became small during suction operation. (A) The figure for demonstrating the state by which waste liquid is transferred from the 1st airtight container to the 2nd airtight container after completion | finish of suction operation, (b) The figure for demonstrating the state after completion | finish of suction operation The figure for demonstrating the state in which the disinfection disinfectant is introduce | transduced into the 1st airtight container in the disinfection step of a waste washing operation | movement. The figure for demonstrating the state in which the disinfection disinfectant in the 1st airtight container is transferred to the 2nd airtight container in the sterilization step of a waste washing operation. The figure for demonstrating the state which is stirring the liquid with a 2nd airtight container by an air bubble after the disinfection agent runs out in the sterilization step of a waste washing operation. The figure for demonstrating the state in which the dechlorination processing agent is introduce | transduced into the 1st airtight container in the waste-liquid process step of waste washing operation | movement. The figure for demonstrating the state by which the pH neutralizing agent is introduce | transduced into the 1st airtight container in the waste liquid processing step of waste washing operation | movement. The figure for demonstrating the state of the liquid disposal step of disposal washing operation Diagram for explaining the state of the cleaning step of the waste cleaning operation Schematic configuration diagram of a waste liquid suction device according to Modification 1 (A) The figure for demonstrating the state which is attracting | sucking waste liquid in suction operation, (b) The figure for demonstrating the state which sterilizes the liquid suction pipe etc. after completion | finish of suction | inhalation of waste liquid in suction operation | movement. The figure for demonstrating the state in which the disinfection disinfectant is introduce | transduced into the 2nd airtight container in the disinfection step of a waste washing operation | movement. The figure for demonstrating the state which is stirring the liquid with a 2nd airtight container by an air bubble after the disinfection agent runs out in the sterilization step of a waste washing operation. The figure for demonstrating the state of the liquid disposal step of disposal washing operation Diagram for explaining the state of the cleaning step of the waste cleaning operation Schematic configuration diagram of a waste liquid suction device according to Modification 2 (A) The figure for demonstrating the state immediately after the start of suction operation, (b) The figure for demonstrating the state where the opening degree of the float valve of the 1st airtight container became small during suction operation. (A) The figure for demonstrating the state in which the disinfection agent in a 1st airtight container is attracted | sucked by the 1st airtight container in the disinfection step of a wastewashing operation | movement, (b) The state of the liquid disposal step of a wastewashing operation | movement Illustration to explain The figure for demonstrating the state of the 1st suction operation | movement of the waste liquid suction device which concerns on the modification 3. FIG. The figure for demonstrating the state of the 2nd suction operation of a waste liquid suction device The figure for demonstrating the state of the waste liquid processing step of a waste washing operation | movement The figure for demonstrating the state of the liquid disposal step of disposal washing operation Diagram for explaining the state of the cleaning step of the waste cleaning operation The figure for demonstrating the state of gas filling operation | movement in the waste liquid suction device which concerns on the modification 4. The figure for demonstrating the state of 1st suction operation | movement in a waste liquid suction device. The figure for demonstrating the state of 2nd suction operation in a waste-liquid suction device. The figure for demonstrating the state which is transferring the waste liquid of a 1st airtight container to a 2nd airtight container with compressed gas in a waste liquid suction device. The figure for demonstrating the state of the liquid disposal step of disposal washing operation

  Hereinafter, embodiments and modifications of the present invention will be described in detail. Note that the following embodiments and modifications are examples of the present invention, and are not intended to limit the scope of the present invention, its application, or its use.

<Embodiment>
The embodiment will be described with reference to FIGS.

[1. About the configuration of the waste liquid suction device]
The waste fluid suction device 10 is a device used for suction of waste fluid generated at a medical site (such as waste fluid generated during surgery or waste fluid generated during endoscopic examination). As shown in FIG. 1, the waste liquid suction device 10 includes a first sealed container 11, a second sealed container 12, and a casing (not shown) that houses these containers 11 and 12. Each of the first sealed container 11 and the second sealed container 12 is, for example, a sealed container in which a lid member is attached via a seal member to a container body whose upper side is opened. The waste liquid suction device 10 can be easily moved by a wheel attached to the casing.

  The first sealed container 11 is a container that first stores waste liquid sucked from the outside. The first sealed container 11 is a transparent container whose liquid level can be seen from the outside. The first sealed container 11 is attached to the outer surface of the second sealed container 12. The first sealed container 11 is provided with a first liquid suction port 15, a first liquid discharge port 16, a first gas discharge port 17, and a first cleaning port 18. An outlet side of the liquid suction tube 21 is connected to the first liquid suction port 15. The first liquid discharge port 16 is connected to the inlet side of the container connection pipe 22. The first gas exhaust port 17 is connected to the inlet side of the first gas suction tube 23 a of the gas suction tube 23. An outlet side of the first cleaning pipe 24 a is connected to the first cleaning port 18. In addition, the first sealed container 11 is provided with a float valve 31 that closes the first gas discharge port 17 when the liquid level exceeds a predetermined water level (water level near full water).

  The second sealed container 12 is a container that stores the waste liquid transferred from the first sealed container 11, and has a larger volume than the first sealed container 11. The volume of the 2nd airtight container 12 is 5 times or more of the volume of the 1st airtight container 11, for example. The second airtight container 12 is provided with a second liquid suction port 26, a second gas discharge port 27, a second cleaning port 28, and a gas communication port 29. The outlet side of the container connection pipe 22 is connected to the second liquid suction port 26. The second gas exhaust port 27 is connected to the inlet side of the second gas suction tube 23 b of the gas suction tube 23. The second cleaning port 28 is connected to the outlet side of the second cleaning pipe 24b. A communication pipe 20 is connected to the gas communication port 29. In addition, the second sealed container 12 is provided with a float valve 32 that closes the second gas discharge port 27 when the liquid level exceeds a predetermined water level (water level near full water).

  The liquid suction pipe 21 is a pipe for sucking the waste liquid from the waste liquid generation point 64 (see FIG. 3A) to the first sealed container 11. A male side coupler 41a (plug) is provided at the inlet of the liquid suction tube 21 as a connector. The male side coupler 41a is connected to the female side coupler 41b (socket) of the tube 102 (see FIG. 3A). The outlet of the liquid suction tube 21 opens toward the side wall in the upper space (gas space) of the first sealed container 11. The liquid suction pipe 21 is provided with a first on-off valve 61.

  The container connection pipe 22 is a pipe for transferring waste liquid from the first sealed container 11 to the second sealed container 12. The container connection pipe 22 is a container connection passage that connects the first liquid discharge port 16 and the second liquid suction port 26, and has an inlet opening at the bottom surface of the first sealed container 11 and an outlet of the second sealed container 12. Open to the bottom. The container connection pipe 22 is provided with a second on-off valve 62 and a check valve 53 in order from the first sealed container 11 side. The check valve 53 prevents a back flow toward the first sealed container 11. One end (inlet end) of the liquid discharge pipe 25 is connected between the check valve 53 and the second sealed container 12 in the container connection pipe 22.

  The liquid discharge pipe 25 is a pipe for discarding the waste liquid from the second sealed container 12. The second liquid suction port 26 is connected not only to the outlet side of the container connection pipe 22 but also to the inlet side of the liquid discharge pipe 25 and functions as an intake / discharge port. The liquid discharge pipe 25 is provided with a check valve 54 that prevents backflow to the second sealed container 12 side. A male coupler 43a is provided at the other end (exit end) of the liquid discharge pipe 25.

  The liquid discharge pipe 25 is also used as a liquid level gauge that measures the liquid level of the second sealed container 12. Specifically, a transparent tube 25 a is used for the liquid discharge tube 25. The liquid discharge pipe 25 extends in the height direction from the bottom side along the second sealed container 12. The male side coupler 43a of the liquid discharge pipe 25 is connected to the female side coupler 43b of the communication pipe 20 extending from the second sealed container 12 when the waste liquid is sucked. In the 2nd airtight container 12, the communication pipe | tube 20 is opened to upper space (gas space). Therefore, the liquid discharge pipe 25 communicates with the gas space of the second sealed container 12 through the communication pipe 20, and the liquid level of the liquid discharge pipe 25 becomes substantially equal to the liquid level of the second sealed container 12.

  The gas suction pipe 23 constitutes a gas suction passage (branch suction passage) for simultaneously sucking gases from the first sealed container 11 and the second sealed container 12. A connector 44 is provided at one end (exit end) of the gas suction tube 23 as a suction outlet. The gas suction pipe 23 includes a first gas suction pipe 23 a connected to the first gas discharge port 17 and a second gas connected to the second gas discharge port 27 in the middle of one joining pipe extending from the connector 44. Branches to the suction tube 23b.

  In the gas suction pipe 23, a third on-off valve 63 is provided on the connector 44 side from the branch point. The first gas suction pipe 23a is provided with a pressure regulator 30 (suction pressure adjustment regulator) that adjusts the pressure loss of the gas flowing through the first gas suction pipe 23a. The pressure regulator 30 is connected to a pressure gauge for measuring the pressure on the first sealed container 11 side in the first gas suction pipe 23a.

  The first cleaning pipe 24 a is a pipe for supplying cleaning water (tap water) to the first sealed container 11. A connector 45 is provided at one end of the first cleaning pipe 24a as a water supply outlet. The other end of the first cleaning pipe 24 a is connected to the first sprinkler 33 in the first sealed container 11. On the other hand, the second cleaning pipe 24 b is a pipe for supplying cleaning water (tap water) to the second sealed container 12. A connector 46 is provided at one end of the second cleaning pipe 24b as a water supply outlet. The other end of the second cleaning pipe 24 b is connected to the second sprinkler 34 in the second sealed container 12.

  The pressure regulator 30 can be manually operated by the user. Further, as the first to third on-off valves 61 to 63, for example, ball valves (ball valves whose opening degree can be adjusted) are used as on-off valves that can be manually operated. For example, swing check valves are used as the check valves 53 to 54. In the present embodiment, no electrical component is used in the waste liquid suction device 10. In addition, the male side couplers 41a and 43a and the female side coupler 43b are of the type with a check valve through which fluid flows only when connected. These valves and couplers may be different from those described.

[2. Control unit configuration]
The waste liquid suction device 10 performs a suction operation for sucking and storing the waste liquid from the outside, and a waste cleaning operation for discarding the waste liquid stored by the suction operation and cleaning the sealed containers 11 and 12. In the present embodiment, the control unit 40 is connected to the waste liquid suction device 10 in order to automatically perform the waste cleaning operation.

  As shown in FIG. 2, the control unit 40 supplies the medicine supply unit 71 for supplying medicine for detoxifying the waste liquid and tap water from the water tap 70a (see FIG. 5) to the cleaning pipes 24a and 24b. A cleaning connection passage 72 for supply, a pump 73 used for adjusting the internal pressure of each of the sealed containers 11 and 12, and a casing (not shown) for housing these components 71 to 73 are provided. Note that the medicine supply unit 71 may be omitted when the medicine treatment can be performed on the medical facility side.

  The medicine supply unit 71 includes first to third medicine storage containers 81 to 83 and a medicine outflow passage 77 through which medicine flows out from each of the medicine storage containers 81 to 83. The first drug storage container 81 stores a bactericidal disinfectant (for example, sodium hypochlorite), and the second drug storage container 82 stores a dechlorination agent (for example, sodium thiosulfate (hypo)). The third drug storage container 83 stores a pH neutralizing agent (for example, sulfamic acid). Further, in the medicine outflow passage 77, three outflow pipes extending from the respective outlets of the first to third medicine storage containers 81 to 83 are joined to one joining pipe. Each outflow pipe is provided with on-off valves 84 to 86. A connector 91 is provided at the outlet of the junction pipe.

  In the cleaning connection passage 72, one inflow pipe extending from the connector 92 serving as an inlet is branched into a first branch pipe 72a and a second branch pipe 72b. The first branch pipe 72a is provided with an on-off valve 87 in the middle and a connector 93 at the outlet. The second branch pipe 72b is provided with an on-off valve 88 in the middle and a connector 94 at the outlet.

  A chemical cleaning passage 74 is branched from the inflow pipe of the cleaning connection passage 72. The medicine cleaning passage 74 branches into a first cleaning branch pipe 74 a connected to the top of the first medicine storage container 81 and a second cleaning branch pipe 74 b connected to the top of the third medicine storage container 83. An opening / closing valve 89 is provided in the first cleaning branch pipe 74a, and an opening / closing valve 90 is provided in the second cleaning branch pipe 74b.

  The pump 73 has a discharge pipe 75 connected to the discharge side and a suction pipe 76 connected to the suction side. The discharge pipe 75 is provided with a connector 95, and the suction pipe 76 is provided with a connector 96. The discharge pipe 75 is provided with a first three-way valve 65 that can be switched between a first state in which the discharge port of the pump 73 communicates with the connector 95 and a second state in which the discharge port of the pump 73 communicates with the outside. Yes. The suction pipe 76 is provided with a second three-way valve 66 that can be switched between a first state in which the suction port of the pump 73 communicates with the connector 96 and a second state in which the suction port of the pump 73 communicates with the outside. Yes.

  In addition, the solenoid valve is used for each on-off valve 84-90. A three-way solenoid valve is used for each of the three-way valves 65 and 66. The control unit 40 is provided with a controller 50 that controls the on-off valves 84 to 90, the three-way valves 65 and 66, and the pump 73.

[3. How to use the waste liquid suction device]
With reference to FIGS. 3-11, the usage method of the waste-liquid suction device 10 is demonstrated. 3 to 11, the pipe through which the liquid is circulated is indicated by a thick solid line, and the pipe through which the gas is circulated is indicated by a thick dotted line. In addition, the state of each on-off valve 61 to 63 using a ball valve is represented by the direction of the lever, and among the on-off valves 61 to 63 and 84 to 90, the reference numerals of the open state valves are enclosed by squares. Further, the first three-way valve 65 and the second three-way valve 66 are filled with a triangle provided with ports connected to each other. The expression method of these drawings is the same in Modifications 1 to 4 described later.

[3-1. About suction operation]
First, with reference to FIG. 3 to FIG. 4, a suction operation for sucking the waste liquid from the patient during the operation and collecting it in the waste liquid suction device 10 will be described. It should be noted that a gas suction device (not shown) is provided in a medical facility where surgery is performed, and a suction port 100 of the gas suction device is provided on the wall surface of the operating room. As a preparatory work, the operator connects the connector 44 of the gas suction pipe 23 to the suction port 100 by the tube 101 and connects the female coupler 41b of the tube 102 to the male of the liquid suction pipe 21 as shown in FIG. Connect to side coupler 41a.

  In this state, when the operator switches all the first to third on-off valves 61 to 63 to the open state, the gas suction device sucks the gas from the first sealed container 11 and the second sealed container 12 at the same time. The operation is started, and the internal pressure is reduced in each of the sealed containers 11 and 12 to form a negative pressure. As the internal pressure of the first sealed container 11 decreases, a suction force acts on the inlet of the tube 102. When the inlet of the tube 102 is disposed at the waste liquid generation point 64, the waste liquid is sucked into the first sealed container 11 through the tube 102 and the liquid suction pipe 21 as shown in FIG. Air is mixed when the waste liquid is sucked into the first sealed container 11. Therefore, the internal pressure of the first sealed container 11 becomes higher than the internal pressure of the second sealed container 12, and the waste liquid in the first sealed container 11 is transferred to the second sealed container 12 through the container connection pipe 22. Since the transfer amount of the waste liquid in this state is small, the waste liquid sucked from the waste liquid generation location 64 is accumulated in the first sealed container 11.

  During the suction operation, as shown in FIG. 3B, when the liquid level rises in the first sealed container 11 and buoyancy acts on the float valve 31, the valve body approaches the valve seat in the float valve 31, and the float valve The opening degree of 31 becomes small. In this state, since the second sealed container 12 sucks more gas than the first sealed container 11, the differential pressure between the second sealed container 12 and the first sealed container 11 increases. As a result, the amount of waste liquid transferred from the first sealed container 11 to the second sealed container 12 increases. Further, in the first closed container 11, the suction of gas is continued through the gap between the valve body and the valve seat in the float valve 31, so the suction of the waste liquid from the waste liquid generation location 64 is continued.

  In some cases, such as when there is a risk that the patient's tissue may be damaged by the suction force, the suction force acting on the waste liquid generation point 64 may be reduced. In such a case, the user decreases the opening degree of the pressure regulator 30. In this case, since the pressure difference between the second sealed container 12 and the first sealed container 11 is increased by the pressure regulator 30, even if the liquid level rises and the opening degree of the float valve 31 does not decrease, the first sealed container The amount of waste liquid transferred from 11 to the second sealed container increases.

  Further, during the suction operation, the liquid discharge pipe 25 communicates with the gas space of the second sealed container 12 via the communication pipe 20, so that the transparent pipe 25 a in the liquid discharge pipe 25 is connected to the second sealed container 12. Functions as a level gauge. The user can grasp the liquid level height of the second sealed container 12 by looking at the transparent tube 25a. Regarding the end of the suction operation, for example, when the medical treatment is finished and the suction of the waste liquid is no longer necessary, gas is introduced into the first sealed container 11 from the inlet of the tube 102. If it does so, the 1st airtight container 11 will not be in the state in which the negative pressure was formed. In this case, even if the pressure regulator 30 is fully open, the internal pressure of the second sealed container 12 is lower than the internal pressure of the first sealed container 11, and the waste liquid in the first sealed container 11 is removed as shown in FIG. The second sealed container 12 is sucked. And in the state where the waste liquid of the 1st airtight container 11 was lost, as shown in FIG.4 (b), a user switches the 1st-3rd on-off valves 61-63 to a closed state. As a result, the suction operation ends.

[3-2. Waste cleaning operation]
Next, with reference to FIGS. 5 to 11, a waste cleaning operation for discarding the waste liquid from the waste liquid suction device 10 and cleaning the inside of each of the first sealed container 11 and the second sealed container 12 will be described.

  Before performing the waste cleaning operation, the operator moves the waste liquid suction device 10 to the waste disposal chamber and performs a preparatory work. As the preparatory work, as shown in FIG. 5, the control unit 40 is connected to the waste liquid suction device 10, the male coupler 43 a of the liquid discharge pipe 25 is filthy and connected to the female coupler 70 b of 70, and further, the tube 103 The connector 92 of the control unit 40 is connected to the water tap 70a. Regarding the connection between the waste liquid suction device 10 and the control unit 40, specifically, the tube 104 is connected between the connector 41a and the connector 91, the tube 105 is connected between the connector 45 and the connector 93, The tube 106 is connected between the connector 96, the tube 107 is connected between the connector 46 and the connector 94, and the tube 108 is connected between the connector 43 b and the connector 95.

  When the preparatory work is completed, the user switches the first to third on-off valves 61 to 63 to the open state, and turns on the start switch (not shown) of the control unit 40. Then, the control unit 50 starts executing the waste cleaning operation. The waste cleaning operation is performed fully automatically.

  First, the control unit 50 performs a sterilization step for sterilizing the waste liquid. In the sterilization step, the control unit 50 sets the first three-way valve 65 to the second state, sets the second three-way valve 66 to the first state, and operates the pump 73. The pump 73 functions as a suction pump. Moreover, the control part 50 switches the on-off valve 84 to an open state.

  Then, as shown in FIG. 5, the gas is simultaneously sucked from the first sealed container 11 and the second sealed container 12 by the pump 73, and the sterilizing / disinfecting agent in the first medicine storage container 81 passes through the tube 104 and the like. 1 Sucked into the sealed container 11. Then, when the disinfectant disappears from the first drug storage container 81, the gas in the first drug storage container 81 is sucked into the first sealed container 11. Then, the first sealed container 11 is not in a state where a negative pressure is formed, and the internal pressure of the second sealed container 12 becomes lower than the internal pressure of the first sealed container 11. As a result, as shown in FIG. 6, the disinfectant in the first sealed container 11 is sucked into the second sealed container 12. When the disinfectant disappears from the first sealed container 11, the gas in the first sealed container 11 is sucked into the second sealed container 12 as shown in FIG. 7. In the 2nd airtight container 12, mixing of a waste liquid and a disinfection agent is accelerated | stimulated by the bubble blown off from the bottom part. Note that the internal pressure of the second sealed container 12 is lower than the internal pressure of the first sealed container 11 over a period in which the opening of the pressure regulator 30 is reduced and the pump 73 functions as a suction pump in the waste cleaning operation. It may be.

  In the middle of the sterilization step, the control unit 50 temporarily switches the open / close valve 89 to the open state and returns it to the closed state after the sterilizing / disinfecting agent in the first medicine storage container 81 is exhausted. During the period when the on-off valve 89 is in the open state, tap water from the tap tap 70a is supplied to the first medicine storage container 81 and further sucked into the first sealed container 11 through the on-off valve 84 (not shown). As a result, the alkaline disinfectant is washed away from the on-off valve 84.

  The controller 50 stops the pump 73 and switches the open / close valve 84 to a closed state after a predetermined time (for example, 1 to 2 minutes) has elapsed since the operation start of the pump 73. The operation time of the pump 73 is set in advance to a time required for introducing the sterilizing / disinfecting agent into the first sealed container 11 and transferring the sterilizing / disinfecting agent from the first sealed container 11 to the second sealed container 12. Yes. In the sterilization step, the sterilization and sterilization of the portion through which the sterilizing / disinfecting agent passes (the first sealed container 11, the liquid suction pipe 21, and the container connecting pipe 22) is performed. Then, the control unit 50 waits for a predetermined waiting time (for example, 1 hour) from the stop point of the pump 73. The control process of the waste cleaning operation is temporarily interrupted. During this time, the sterilization treatment of the waste liquid proceeds in the second sealed container 12.

  Next, after the standby time has elapsed, the control unit 50 performs a waste liquid processing step for processing the waste liquid in the second sealed container 12 to a state where it can be discarded (detoxified state). In the waste liquid treatment step, first, the control unit 50 switches the open / close valve 85 to the open state and operates the pump 73. The first three-way valve 65 is set to the second state, and the second three-way valve 66 is set to the first state.

  In the waste liquid treatment step, as shown in FIG. 8, as in the sterilization step, gas is simultaneously sucked from the first sealed container 11 and the second sealed container 12 by the pump 73, and the dechlorination process in the second drug storage container 82 is performed. The agent is sucked into the first sealed container 11. When the dechlorination treatment agent runs out of the second drug storage container 82, the gas in the second drug storage container 82 is sucked into the first sealed container 11, and the dechlorination treatment agent in the first sealed container 11 is second. Suction into the sealed container 12 (not shown). When the dechlorination agent disappears from the first sealed container 11, the gas in the first sealed container 11 is sucked into the second sealed container 12 (not shown). In the 2nd airtight container 12, mixing of a waste liquid and a dechlorination agent is accelerated | stimulated by the bubble blown off from the bottom part.

  Next, the control unit 50 switches the open / close valve 85 to the closed state and switches the open / close valve 86 to the open state. The operation of the pump 73 is continued. Thereby, as shown in FIG. 9, the pH neutralizing agent in the third medicine storage container 83 is sucked into the first sealed container 11. When the pH neutralizing agent is exhausted from the third chemical reservoir 83, the gas in the third chemical reservoir 83 is sucked into the first sealed container 11, and the pH neutralizer in the first sealed container 11 is second. Suction into the sealed container 12 (not shown). When the pH neutralizer disappears from the first sealed container 11, the gas in the first sealed container 11 is sucked into the second sealed container 12 (not shown). In the 2nd airtight container 12, mixing of a waste liquid and a pH neutralizer is accelerated | stimulated by the bubble blown off from the bottom part. The controller 50 stops the pump 73 after a predetermined time has elapsed.

  In addition, after the pH neutralizer in the 3rd chemical | medical agent storage container 83 runs out, the control part 50 switches the on-off valve 90 to an open state temporarily, and returns it to a closed state. During the period in which the on-off valve 90 is open, tap water from the water tap 70a is supplied to the third medicine storage container 83, and further sucked into the first sealed container 11 through the on-off valve 86 (not shown). As a result, the acidic pH neutralizing agent is washed away from the on-off valve 86.

  Next, the control unit 50 performs a liquid disposal step for discarding the waste liquid in the second sealed container 12. In the liquid discarding step, the control unit 50 switches the first three-way valve 65 to the first state, switches the second three-way valve 66 to the second state, and operates the pump 73. The pump 73 functions as a pressurizing pump. As a result, as shown in FIG. 10, the gas discharged from the pump 73 is supplied to the second sealed container 12 through the tube 108 and the communication pipe 20, and the liquid level is pressurized in the second sealed container 12. As a result, the waste liquid in the second hermetic container 12 flows through the liquid discharge pipe 25 and is discharged into the waste stream 70. The control unit 50 stops the pump 73 in a state where all the waste liquid in the second sealed container 12 is filthy and discharged to the 70.

  Next, the control unit 50 performs a cleaning step of cleaning each tank of the first sealed container 11 and the second sealed container 12. In the cleaning step, the control unit 50 sets the first three-way valve 65 to the second state, sets the second three-way valve 66 to the first state, and operates the pump 73. Moreover, the control part 50 switches the on-off valve 87 and the on-off valve 88 to an open state. Thus, as shown in FIG. 11, the water supplied from the water tap 70a is sprinkled from the sprinklers 33 and 34 in each of the first sealed container 11 and the second sealed container 12 through the cleaning connection passage 72, The inside of each sealed container 11 and 12 is cleaned. Further, since the first sealed container 11 communicates with the outside through the liquid suction tube 21 and the like, the sewage (water after washing) in the first sealed container 11 is transferred to the second sealed container 12.

  When ending the cleaning step, the control unit 50 returns the on-off valve 87 and the on-off valve 88 to the closed state to stop watering. Then, the pump 73 is stopped in a state where all the sewage in the first sealed container 11 is transferred to the second sealed container 12.

  Next, the control unit 50 performs the liquid disposal step again. In this liquid disposal step, as shown in FIG. 10, the gas discharged from the pump 73 is supplied to the second sealed container 12, and the sewage in the second sealed container 12 passes through the liquid discharge pipe 25 and becomes a sewage distribution to 70. Discharged. Since this liquid discarding step is the same operation as the liquid discarding step when discharging the waste liquid, detailed description thereof is omitted. Thus, the waste cleaning operation is completed.

[4. Effects of the embodiment]
In the present embodiment, when gas is simultaneously sucked from the first sealed container 11 and the second sealed container 12 through the gas suction passage 23, external waste liquid is sucked through the first liquid suction port 15, and the negative pressure adjusting unit When the flow rate of the first gas suction pipe 23 a is decreased by 30, 31, the waste liquid in the first sealed container 11 is transferred to the second sealed container 12 relatively quickly. According to the present embodiment, it is possible to provide the waste liquid suction device 10 that can easily transfer the waste liquid between the sealed containers 11 and 12 while sucking the waste liquid from the outside.

  In the present embodiment, since the pressure regulator 30 and the float valve 31 are provided as a negative pressure adjusting unit for adjusting the flow rate of the gas flowing through the first gas suction pipe 23a, the suction acting on the waste liquid generation point 64 is provided. The force can be adjusted, and the waste liquid can be transferred to the second sealed container 12 regardless of the state of adjustment of the suction force.

  Moreover, in this embodiment, since the volume of the 1st airtight container 11 is smaller than the volume of the 2nd airtight container 12, the waste liquid suction apparatus 10 with the favorable responsiveness of suction can be provided.

  Moreover, in this embodiment, since the 1st liquid discharge port 16 is opening in the bottom face of the 1st airtight container 11, all the waste liquids in the 1st airtight container 11 can be transferred to the 2nd airtight container 12, The waste liquid sucked from the outside can be collected in the second sealed container 12 and treated with a medicine.

  In the present embodiment, since the second liquid suction port 26 opens at the lower part of the second sealed container 12, the waste liquid in the second sealed container 12 is generated by the gas (bubbles) transferred from the first sealed container 11. Can be agitated, and mixing of the drug and the waste liquid can be promoted.

  In the present embodiment, the container connection pipe 22 is provided with a check valve 53 for preventing the backflow of the waste liquid to the first sealed container 11 side, and the liquid discharge pipe is provided from the check valve 53 to the second sealed container 12 side. 25 is connected. In the present embodiment, the second liquid suction port 26 through which the waste liquid transferred from the first sealed container 11 passes is also used for discharging the waste liquid from the second sealed container 12. Therefore, in providing the liquid discharge pipe 25, it can suppress that a structure becomes complicated.

  Moreover, in this embodiment, the chemical | medical agent supplied to the 1st airtight container 11 at the sterilization step and the waste liquid treatment step is transferred to the 2nd airtight container 12. Therefore, the medicine can be mixed with the waste liquid in the second sealed container 12 while the medicine is supplied to the container connection pipe 22.

<Modification 1>
Modification 1 will be described with reference to FIGS. The waste liquid suction device 110 according to this modification is different from the above-described embodiment in the connection position of the pipe in the second sealed container 12. Below, it demonstrates centering on a different point from embodiment. Moreover, about the same component as embodiment, the same code | symbol is attached | subjected using the same name.

  In the present modification, as shown in FIG. 12, the container connection pipe 22 opens into the upper space of the second sealed container 12. Specifically, the container connection tube 22 is inserted into the second liquid suction port 26 of the lid member of the second hermetic container 12, and an outlet is disposed immediately below the lid member. The liquid discharge pipe 25 is connected to a second liquid discharge port 36 on the bottom surface of the second sealed container 12. A gas supply pipe 60 is provided instead of the communication pipe 20. The gas supply pipe 60 is inserted into the gas supply port 37 of the second sealed container 12. The gas supply pipe 60 is provided with a connector 47 at one end, and the other end opens near the bottom surface of the second sealed container 12.

  In the suction operation, when the operator switches all the first to third on-off valves 61 to 63 to the open state, the gas is simultaneously sucked from the first sealed container 11 and the second sealed container 12 by the gas suction device of the medical facility. . When the inlet of the tube 102 is disposed at the waste liquid generation location 64, the waste liquid is sucked into the first sealed container 11 through the tube 102 and the like. When the opening degree of the pressure regulator 30 is reduced, as shown in FIG. 13A, the waste liquid sucked into the first sealed container 11 is relatively transferred to the second sealed container 12 through the container connection pipe 22. It is transferred promptly. When the first sealed container 11 becomes empty during the suction operation, the gas is transferred to the second sealed container 12. On the other hand, in a state where the opening degree of the pressure regulator 30 is not reduced, when the liquid level rises and the opening degree of the float valve 31 decreases, the waste liquid sucked into the first sealed container 11 is relatively quickly sealed in the second sealed state. It is transferred to the container 12.

  In this modification, the fluid is discharged from the upper side of the liquid level in the second sealed container 12. Here, in the case of the above-described embodiment, in a state where the gas is transferred to the second sealed container 12 during the suction operation, there is a possibility that the gas is discharged under the liquid level and the sound of bubbles is transmitted to the medical staff. is there. If necessary, it is necessary to cover the second sealed container 12 with a sound insulating material or a sound absorbing material. On the other hand, in this modification, the sound of bubbles is not generated. According to this modification, it is possible to provide the waste liquid suction device 110 that is excellent in silence.

  Further, in this modification, as will be described later, the medicine is directly supplied to the second sealed container 12 by the waste cleaning operation. Therefore, when the suction of the waste liquid is completed at the end of the suction operation, in order to sterilize the liquid suction pipe 21, as shown in FIG. 13 (b), the first medicine storage container 81 containing the sterilization disinfectant is contained. The inlet of the tube 102 is disposed, and a sterilizing / disinfecting agent is introduced from the liquid suction tube 21 into the first sealed container 11. When the opening degree of the pressure regulator 30 is reduced, the sterilizing agent introduced into the first sealed container 11 is transferred to the second sealed container 12. The suction operation ends when the user switches the first to third on-off valves 61 to 63 to the closed state after the sterilizing / disinfecting agent in the first sealed container 11 is exhausted. In the state where the opening degree of the pressure regulator 30 is not reduced, when the sterilizing agent disappears from the first drug storage container 81 and the gas is sucked into the first sealed container 11, the gas is introduced into the first sealed container 11. The sterilizing and disinfecting agent is transferred to the second sealed container 12 (not shown).

  In the waste cleaning operation, unlike the embodiment, the connector 47 is connected to the connector 91 of the control unit 40 as shown in FIG. Further, the connector 95 is not provided in the control unit 40, and the discharge pipe 75 and the suction pipe 76 are connected to the connector 96.

  In the sterilization step, when gas is simultaneously sucked from the first sealed container 11 and the second sealed container 12 by the pump 73, the sterilizing / disinfecting agent in the first drug storage container 81 passes through the tube 104 or the like to the second sealed container. 12 is aspirated. Then, when the disinfectant disappears from the first drug storage container 81, the gas in the first drug storage container 81 is sucked into the second sealed container 12 as shown in FIG. In the second sealed container 12, bubbles are blown out from below the liquid level. In addition, after the sterilizing / disinfecting agent in the first medicine storage container 81 is exhausted, the operation of switching the on-off valve 89 to the open state and washing the on-off valve 84 with tap water from the tap 70a is performed. The form is the same.

  In the waste liquid treatment step, the opening / closing valve 85 is set in an open state and the dechlorination agent in the second chemical reservoir 82 is introduced into the second sealed container 12, and the opening / closing valve 86 is set in an open state. Then, the operation of introducing the pH neutralizing agent in the third medicine storage container 83 into the second sealed container 12 is performed in this order. In any operation, when the medicine is exhausted from the medicine storage containers 82 and 83, gas is sucked into the second sealed container 12, and bubbles are blown out below the liquid level. In addition, after the pH neutralizing agent in the third medicine storage container 83 is exhausted, the operation of switching the on-off valve 90 to the open state and washing the on-off valve 86 with tap water from the tap 70a is performed. This is the same as the embodiment.

  In the liquid discarding step, the first three-way valve 65 is set to the first state, and the second three-way valve 66 is set to the second state. As shown in FIG. 16, the gas discharged from the pump 73 is supplied to the second sealed container 12 through the gas suction pipe 23, and the liquid level is pressurized in the second sealed container 12. The waste liquid in the second hermetic container 12 is discharged through the liquid discharge pipe 25 and discharged to 70.

  In the washing step, the first three-way valve 65 is set to the second state, the second three-way valve 66 is set to the first state, and the on-off valve 87 and the on-off valve 88 are set to the open state. As shown in FIG. 17, the water supplied from the water tap 70 a is sprayed from the sprinklers 33 and 34 in the first sealed container 11 and the second sealed container 12 through the cleaning connection passage 72. Further, since the pump 73 is operated and the first sealed container 11 communicates with the outside through the liquid suction pipe 21 and the like, the internal pressure of the second sealed container 12 becomes lower than the internal pressure of the first sealed container 11. The sewage in the first sealed container 11 is transferred to the second sealed container 12. Then, after the cleaning step, the liquid disposal step is performed again.

<Modification 2>
Modification 2 will be described with reference to FIGS. The waste liquid suction device 210 according to this modification can perform the waste cleaning operation alone without using the control unit 40 in the above-described embodiment. In addition, below, about the same structure as the above-mentioned embodiment, the same code | symbol is attached | subjected with the same name.

  As shown in FIG. 18, the waste liquid suction device 210 includes a pump 73 and second to third medicine storage containers 82 to 83. The discharge pipe 75 and the suction pipe 76 connected to the pump 73 are connected to each other and connected to the gas suction pipe 23 through one pipe. Further, the second to third drug storage containers 82 to 83 are connected to the second sealed container 12. Further, the first cleaning pipe 24 a and the second cleaning pipe 24 b are branched from one pipe extending from the connector 48. An on-off valve 98 is provided on the upstream side of the branch point.

  In the modification, when performing the suction operation, the suction port 100 connected to the gas suction device of the medical facility and the connector 44 are connected. As shown in FIG. 19A, the gas is sucked from each of the sealed containers 11 and 12, and the waste liquid from the generation site 64 of the waste liquid is sucked into the first sealed container 11. And as shown in FIG.19 (b), when the opening degree of the float valve 31 becomes small in the 1st airtight container 11, the waste liquid in the 1st airtight container 11 will be transferred to the 2nd airtight container 12 comparatively rapidly. . In the suction operation, the waste liquid suction device 210 may be configured to use the pump 73 instead of the gas suction device in the medical facility.

  Further, regarding the sterilization step of the waste cleaning operation, as shown in FIG. 20A, the control unit 50 performs the first operation with the inlet of the tube 102 arranged in the first drug storage container 81 containing the sterilizing disinfectant. The first three-way valve 65 is set to the second state, the second three-way valve 66 is set to the first state, and the pump 73 is operated. As a result, the sterilizing / disinfecting agent is supplied from the first medicine storage container 81 to the first sealed container 11, and when the sterilizing / disinfecting agent disappears and the gas is introduced into the first sealed container 11, the sterilizing / disinfecting agent is first It is transferred from the sealed container 11 to the second sealed container 12. In the waste liquid treatment step, the on-off valve 85 and the on-off valve 86 are sequentially switched to the open state, the dechlorination treatment agent is supplied from the second medicine storage container 82 to the second sealed container 12, and the third medicine storage container 83 is further supplied. The pH neutralizer is supplied to the second sealed container 12 (not shown).

  As for the liquid discarding step, as shown in FIG. 20B, the control unit 50 switches the first three-way valve 65 to the first state, switches the second three-way valve 66 to the second state, and pumps 73 Drive. As a result, the gas discharged from the pump 73 is supplied to the second sealed container 12, and the waste liquid in the second sealed container 12 is filthy and discharged to 70. For the cleaning step, the control unit 50 sets the first three-way valve 65 to the second state, sets the second three-way valve 66 to the first state, and operates the pump 73. The control unit 50 switches the on-off valve 98 to the open state. Thereby, the water supplied from the water tap 70a is sprinkled from the sprinklers 33 and 34 in each of the first sealed container 11 and the second sealed container 12.

<Modification 3>
Modification 3 will be described with reference to FIGS. The waste liquid suction device 310 according to this modification differs from the above-described embodiment in the configuration of the gas suction pipe 23, the configuration of the control unit 140, the position where the chemical liquid is introduced from the control unit 140, and the like. Moreover, the point which can suck | suck a gas directly only from the 2nd airtight container 12 among the 1st airtight containers 11 and the 2nd airtight containers 12 in suction operation | movement differs from the above-mentioned embodiment. Below, it demonstrates centering on a different point from embodiment. In addition, about the same component as embodiment, the same code | symbol is attached | subjected using the same name.

  The gas suction tube 23 can be connected to both the gas suction device of the medical facility and the pump 73 of the control unit 140. As shown in FIGS. 21 and 22, the gas suction pipe 23 extends from the connector 44 to the joining pipe 23c, and is branched into the first gas suction pipe 23a and the second gas suction pipe 23b on the way. A first connection pipe 23d extending from the connector 39 is connected to the junction pipe 23c. A fifth on-off valve 68 is connected to the first gas suction pipe 23a. The fifth on-off valve 68 corresponds to a suction switching unit. A second connection pipe 23e extending from the connector 38 is connected to the second gas suction pipe 23b. The connector 38 is connected to a connector 48 to which the suction port 100 is connected. The connector 48 is detachable from the pressure regulator 30.

  A communication pipe 25 b provided with a liquid level gauge 25 a branches off from the liquid discharge pipe 25. The communication pipe 25b is connected to the second cleaning pipe 24b so that the gas pressure in the liquid level gauge 25a becomes equal to the gas pressure in the second sealed container 12. An open / close valve 35 for adjusting the amount of water is connected to the communication pipe 25b. A pair of detachable connectors 111 and 112 is provided in the middle of the container connection pipe 22 and the second cleaning pipe 24b. Therefore, the connector 112 pair is separated and the connector on the first sealed container 11 side is connected to the suction port 100, or the connector pair 111 is separated and the connector on the first sealed container 11 side is dirty and connected to 70. Thus, the waste liquid can be sucked and discharged by the first sealed container 11 alone.

  A connection pipe 58 extending from the connector 47 for connecting to the medicine supply unit 71 of the control unit 140 is connected downstream of the check valve 53 in the container connection pipe 22. Further, as shown in FIG. 23, the drug supply unit 71 does not include the first drug storage container 81 for the bactericidal disinfectant unlike the above-described embodiment, and the second drug storage container 82 and the third drug storage are not provided. Two drug storage containers including a container 83 are provided.

  The waste liquid suction device 310 includes a pressure tank 78 that can store compressed gas. The compressed gas port 78 a of the pressure tank 78 is connected to the connector 49 via the gas introduction pipe 51. The pressure tank 78 is connected to the first sealed container 11 via the compressed gas supply pipe 52. A fourth on-off valve (opening / closing mechanism) 67 for opening and closing the compressed gas supply pipe 52 is connected to the compressed gas supply pipe 52. The pressure tank 78 can introduce a compressed gas from a compressed gas supply device provided in a medical facility by performing a gas filling operation in the same manner as Modification 4 described later. In addition, although the pressure tank 78 is arrange | positioned on the outer side of the airtight containers 11 and 12, you may arrange | position in the 2nd airtight container 12 similarly to the modification 4 mentioned later.

  Next, the operation of the waste liquid suction device 310 will be described. First, the suction operation will be described with reference to FIGS. As a preparatory work, the operator connects the tube 102 to the liquid suction pipe 21 and connects the connector 48 to the suction port 100 via the tube 101 and the pressure regulator 30 as shown in FIG. Then, a suction operation in which gas is sucked from the gas suction pipe (branch suction passage) 23 by the gas suction device is started. The fifth on-off valve 68 is set to either an open state or a closed state depending on the patient. For example, the fifth on-off valve 68 is set to a closed state (first state of the suction switching unit) for a urological patient, and the fifth on-off valve 68 is set to an open state (first of the suction switching unit for an orthopedic patient). 2 states).

  First, the first suction operation when the fifth on-off valve 68 is set to the closed state will be described. In this case, by sucking the gas from the outlet of the gas suction tube 23, the gas is sucked from the second sealed container 12, as shown in FIG. Further, gas is sucked from the first sealed container 11 to the second sealed container 12 through the container connection pipe (connection suction passage) 22. Negative pressure is formed in both the first sealed container 11 and the second sealed container 12. Therefore, by opening the first on-off valve 61, a suction force acts on the tip of the tube 102, and the waste liquid can be sucked into the first sealed container 11 from the waste liquid generation point 64. The waste liquid sucked into the first sealed container 11 is transferred from the first sealed container 11 to the second sealed container 12 through the container connection pipe 22. Further, not only the waste liquid but also air is sucked from the tip of the tube 102. The air in the first sealed container 11 is transferred to the second sealed container 12 when the waste liquid is exhausted. Either waste liquid or air continues to be transferred from the first sealed container 11 to the second sealed container 12. For this reason, the inside of the first sealed container 11 is maintained at a negative pressure.

  Next, the second suction operation when the fifth on-off valve 68 is set to the open state will be described. In this case, by sucking the gas from the outlet of the gas suction tube 23, as shown in FIG. 22, the gas is sucked from the first sealed container 11 and the second sealed container 12 as in the above-described embodiment, and the first Negative pressure is formed in both the sealed container 11 and the second sealed container 12. Therefore, by opening the first on-off valve 61, the waste liquid can be sucked into the first sealed container 11 from the waste liquid generation point 64. In this case, air is mixed in the medical site, a differential pressure is generated between the first sealed container 11 and the second sealed container 12, and the waste liquid is transferred from the first sealed container 11 to the second sealed container 12. Note that a plurality of liquid suction pipes 21 provided with on-off valves 61 may be connected to the first sealed container 11. In this case, by setting the opening of each on-off valve 61 to be half open, when the air is introduced from one liquid suction pipe 21, the internal pressure of the first sealed container 11 greatly increases, and the other liquid suction pipes 21 It can suppress that suction force falls greatly.

  In the first suction operation, the gas in the first sealed container 11 is sucked into the gas suction pipe (branch suction passage) 23 through the second sealed container 12. Therefore, compared to the second suction operation in which the gas in the first sealed container 11 is directly sucked into the gas suction pipe 23, the suction force acting on the tip of the tube 102 is small, and the suction force acting on the waste liquid generation point 64. It is suitable when it is desired to lower the value. On the other hand, the second suction operation is suitable when the suction force acting on the tip of the tube 102 is relatively large and the amount of waste liquid generated is large. In the present modification, the first suction operation and the second suction operation each having advantages can be appropriately selected.

  In the second suction operation, the amount of waste liquid sucked from the first sealed container 11 is larger than the amount of waste liquid transferred from the first sealed container 11 to the second sealed container 12, and the liquid level of the first sealed container 11 gradually increases. It may rise to In such a case, when the opening degree of the float valve 31 decreases, the differential pressure between the first sealed container 11 and the second sealed container 12 increases, and the waste liquid is transferred from the first sealed container 11 to the second sealed container 12. The amount increases. Even when the liquid level has not risen to the float valve 31, the user closes the fifth on-off valve 68 and then opens the fourth on-off valve 67 to open the first airtight from the pressure tank 78. Compressed gas is supplied to the container 11 so that the waste liquid in the first sealed container 11 can be quickly transferred to the second sealed container 12 (not shown).

  When the suction of the waste liquid is completed in the second suction operation, the fourth on-off valve 67 is opened and the compressed gas is supplied from the pressure tank 78 to the first sealed container 11. As a result, all waste liquid in the first sealed container 11 is transferred to the second sealed container 12. In the first suction operation, the sucked waste liquid is immediately transferred to the second sealed container 12, but the waste liquid may remain in the first sealed container 11 after the suction of the waste liquid. In such a case, similarly to the second suction operation, the compressed gas may be supplied to the first sealed container 11 after the suction of the waste liquid is completed.

  When there is no waste liquid from the first sealed container 11, a sterilization step is performed in the operating room. The user arranges the inlet of the tube 102 in the first medicine storage container 81 in a state where the gas is sucked by the gas suction device as in the first modification. Then, the sterilizing / disinfecting agent is introduced from the liquid suction tube 21 to the first sealed container 11, and the disinfecting / disinfecting agent is transferred from the first sealed container 11 to the second sealed container 12. At this time, air is blown out from the bottom of the second hermetic container 12 through the liquid discharge pipe 25, and the mixing of the waste liquid and the sterilizing agent is promoted. When the introduction of the disinfectant is completed, the user releases the connection between the connector 48 and the suction port 100 and switches the first on-off valve 61 to the closed state. Then, the waste washing operation is performed after the sterilization treatment of the waste liquid is advanced at least by the waiting time described above.

  Next, a waste cleaning operation in the waste disposal chamber will be described with reference to FIGS. First, as shown in FIG. 23, the operator connects the control unit 140 to the waste liquid suction device 310, connects the liquid discharge pipe 25 to the waste stream 70, and further connects the connector of the control unit 140 by the tube 103. 92 is connected to the water tap 70a. When the preparation work is completed, the user switches the first on-off valve 61 to the open state and turns on the start switch of the control unit 140. Then, the control unit 50 starts executing the waste cleaning operation. The waste cleaning operation is performed fully automatically.

  First, a waste liquid treatment step is performed. In the waste liquid treatment step, the control unit 50 sets the on-off valve 85 to an open state. Then, the first three-way valve 65 is set to the second state, the second three-way valve 66 is set to the first state, and the pump 73 is operated. Then, as shown in FIG. 23, the gas is sucked from the second sealed container 12 by the pump 73, and the dechlorination agent in the second drug storage container 82 is sucked into the second sealed container 12. During this period, air is blown out from the bottom of the second sealed container 12 through the liquid discharge pipe 25. Next, the control unit 50 switches the on-off valve 85 to the closed state and switches the on-off valve 86 to the open state. Then, the pH neutralizing agent in the third medicine storage container 83 is sucked into the second sealed container 12. Also during this period, air is blown out from the bottom of the second sealed container 12.

  Next, the control unit 50 performs a liquid disposal step similar to that in the above-described embodiment. In the liquid discarding step, the control unit 50 switches the first three-way valve 65 to the first state, switches the second three-way valve 66 to the second state, and operates the pump 73. As a result, as shown in FIG. 24, the gas discharged from the pump 73 is supplied to the second sealed container 12, and the waste liquid in the second sealed container 12 passes through the liquid discharge pipe 25 and is discharged into the waste stream 70. .

  Next, the control part 50 performs the same washing | cleaning step as the above-mentioned embodiment. In the cleaning step, the control unit 50 sets the first three-way valve 65 to the second state, sets the second three-way valve 66 to the first state, and operates the pump 73. Moreover, the control part 50 switches the on-off valve 35, the on-off valve 87, and the on-off valve 88 to an open state. Thus, as shown in FIG. 25, the water supplied from the water tap 70a is sprinkled from the sprinklers 33, 34 in each of the first sealed container 11 and the second sealed container 12, and the inside of each sealed container 11, 12 Is washed. A part of the water branched to the second cleaning pipe 24b is also supplied to the communication pipe 25b, and the liquid level gauge 25a is also cleaned. The gas in the second sealed container 12 is sucked by the pump 73, and the first sealed container 11 communicates with the outside through the liquid suction pipe 21. Therefore, the sewage in the first sealed container 11 is transferred to the second sealed container 12. The opening degree of the on-off valve 35 can be adjusted as appropriate.

  When the cleaning step is completed, the control unit 50 performs the liquid discarding step again, so that the sewage in the second sealed container 12 is sewed and discharged to 70.

<Modification 4>
Modification 4 will be described with reference to FIGS. 26 to 31. In the waste liquid suction device 410 according to this modification, the pressure tank 78 is mounted in the second sealed container 12 instead of the pump 73 in order to discard the waste liquid in the second sealed container 12 as described above. Different from form. Hereinafter, the configuration of the waste liquid suction device 410 will be described focusing on differences from the embodiment. In addition, about the same component as embodiment, the same code | symbol is attached | subjected using the same name.

  The pressure tank 78 is a container that stores compressed gas, as in the third modification described above. As shown in FIG. 26, the pressure tank 78 is disposed in the second sealed container 12. The pressure tank 78 is a container having a smaller cross-sectional area and a lower height than the second sealed container 12. The pressure tank 78 is fixed to the second sealed container 12 with its bottom surface floating above the bottom surface of the second sealed container 12.

  A gas introduction pipe 51 is connected to the compressed gas port 78a of the pressure tank 78 in order to introduce compressed gas. A gas supply pipe 55 connected to the first gas suction pipe 23a is branched from the gas introduction pipe 51. A first switching valve 56 is connected to a branch point of the gas supply pipe 55. The first switching valve 56 has a closed state in which the gas introduction pipe 51 and the gas supply pipe 55 are closed, a first state in which the pressure tank 78 is communicated with the connector 49, and a second state in which the pressure tank 78 is communicated with the gas supply pipe 55. It is possible to switch to a state. Further, a part of the compressed gas supply pipe 52 passes outside the second sealed container 12, and an outlet end opens near the bottom surface in the second sealed container 12. A fourth on-off valve 67 is connected to the outer portion of the second sealed container 12 in the compressed gas supply pipe 52.

  Here, in order to use the pressure tank 78 in the waste liquid suction device 410, an operator needs to perform a gas filling operation of filling the pressure tank 78 with gas. In hospitals, an air supply port 115 and an oxygen supply port (not shown) of a compressed gas supply device are provided in addition to the suction port 100 of the gas suction device on the wall of an operating room. As shown in FIG. 26, the operator performs the gas filling operation by switching the first switching valve 56 to the first state in a state where the air supply port 115 (or oxygen supply port) and the connector 49 are connected by the tube 114. . When ending the gas filling operation, the first switching valve 56 is switched to the closed state.

  When the first switching valve 56 is switched to the second state while the pressure tank 78 is filled with the compressed gas, the compressed gas in the pressure tank 78 passes through the gas supply pipe 55 and the first gas suction pipe 23a. And supplied to the first sealed container 11. When the fourth on-off valve 67 is switched to the open state, the compressed gas in the pressure tank 78 is supplied to the second sealed container 12.

  Further, the container connection pipe (connection suction passage) 22 is open to the upper space of the second hermetic container 12 as in the first modification. A check valve 53 is connected to the container connection tube 22 to prevent back flow toward the first sealed container 11. Further, the gas suction pipe (branch suction passage) 23 is branched into a first gas suction pipe 23a and a second gas suction pipe 23b as in the above-described embodiment. A fifth on-off valve 68 corresponding to a suction switching unit is connected to the first gas suction pipe 23a.

  A second cleaning pipe 24b is connected to the middle of the first cleaning pipe 24a. A second switching valve 57 is connected to this connection location. The second cleaning pipe 24b is branched into a plurality of branch pipes (for example, three branch pipes). A sprinkler 34 is connected to the outlet end of each branch pipe. In the second sealed container 12, for example, three sprinklers 34 are provided and arranged at equal angular intervals in the circumferential direction around the pressure tank 78. In addition, the 2nd chemical | medical agent storage container 82 and the 3rd chemical | medical agent storage container 83 are connected to the 2nd airtight container 12 similarly to the modification 2 (illustration omitted).

  Further, the communication pipe 25b to which the liquid level gauge 25a is connected branches off from the middle of the liquid discharge pipe 25 as in the third modification. The communication pipe 25b is connected to the branch pipe of the second cleaning pipe 24b. A sixth open / close valve 69 is connected to the liquid discharge pipe 25. In addition, a gas vent pipe 97 provided with a seventh on-off valve 99 is connected to the first sealed container 11.

  As the fourth to seventh on-off valves 67 to 69, 99 and the first to second switching valves 56, 57, for example, ball valves (valves whose opening degree can be adjusted) are used as valves that can be manually operated. It has been. No electrical components are used in the waste liquid suction device 410. Similarly to the above-described embodiment, the pressure regulator 30 may be provided in the first gas suction pipe 23 a, or the pressure regulator 30 may be attached to the connector 44.

  Next, the operation of the waste liquid suction device 410 will be described. First, the suction operation will be described with reference to FIGS. Hereinafter, the operation of the waste liquid suction device 410 will be described with a focus on differences from the third modification. As a preparatory work, the operator connects the tube 102 to the liquid suction pipe 21 as shown in FIG. In this state, when the operator connects the connector 44 of the gas suction tube 23 to the suction port 100 by the tube 101, the suction operation is started.

  In the present modification, as in Modification 3, the first suction operation for setting the fifth on-off valve 68 to the closed state and the second suction operation for setting the fifth on-off valve 68 to the open state can be selected. In the first suction operation, as shown in FIG. 27, the gas in the second sealed container 12 is directly sucked into the gas suction tube 23, and the gas in the first sealed container 11 is sucked through the second sealed container 12. It is sucked into the tube 23. In the second suction operation, as shown in FIG. 28, the gas is directly sucked into the gas suction pipe 23 from the first sealed container 11 and the second sealed container 12. In each suction operation, the waste liquid can be sucked into the first sealed container 11 from the waste liquid generation point 64 by opening the first on-off valve 61.

  Note that when the suction of the waste liquid is completed in the second suction operation, the fifth on-off valve 68 is closed and the first switching valve 56 is set to the second state. As a result, as shown in FIG. 29, the compressed gas is supplied from the pressure tank 78 to the first sealed container 11, and the waste liquid in the first sealed container 11 is quickly transferred to the second sealed container 12. When the waste liquid disappears from the first sealed container 11, the sterilization step is performed in the operating room, which is the same as the third modification. In the sterilization step, after all the sterilizing disinfectant is transferred to the second sealed container 12, the fourth on-off valve 67 is switched to the open state. Thereby, in the 2nd airtight container 12, the gas from the pressure tank 78 is supplied below the liquid level, and mixing of a waste liquid and a disinfection agent is accelerated | stimulated (illustration omitted). The waste liquid is sterilized at least by waiting for the above-described waiting time.

  Next, the waste cleaning operation in the waste disposal chamber will be described with reference to FIGS. First, as a preparatory work, the worker connects the liquid discharge pipe 25 to the filthy logistics 70 as shown in FIG. 30, and further connects the connector 48 to the water tap 70a.

  First, a waste liquid treatment step is performed. In the waste liquid treatment step, the user supplies the dechlorination treatment agent from the second drug storage container 82 to the second sealed container 12 and sets the fourth on-off valve 67 to the open state over a predetermined time. Then, in the second sealed container 12, the gas from the pressure tank 78 is supplied below the liquid level. Next, the user supplies the pH neutralizing agent from the third drug storage container 83 to the second sealed container 12 and sets the fourth on-off valve 67 to the open state for a predetermined time. In the second sealed container 12, the gas from the pressure tank 78 is supplied below the liquid level.

  Next, a liquid disposal step is performed. In the liquid discarding step, the user switches each of the fourth on-off valve 67 and the sixth on-off valve 69 to the open state. Then, as shown in FIG. 30, the compressed gas in the pressure tank 78 is supplied into the second sealed container 12, and the liquid level is pressurized in the second sealed container 12. As a result, the waste liquid in the second hermetic container 12 flows through the liquid discharge pipe 25 and is discharged into the waste stream 70. When the waste liquid is no longer discharged from the liquid discharge pipe 25, the user returns each of the fourth on-off valve 67 and the sixth on-off valve 69 to the closed state.

  Next, a washing step is performed. In the cleaning step, the user sets the second switching valve 57 to the first state when cleaning the first sealed container 11, and sets the second switching valve 57 to the second state when cleaning the second sealed container 12. Set to. In the first state, the water supplied from the water tap 70a is sprinkled from the sprinkler 33 in the first sealed container 11 (not shown). In the second state, water supplied from the water tap 70a is sprinkled from each sprinkler 34 in the second sealed container 12 (not shown). And when washing | cleaning of each airtight containers 11 and 12 is complete | finished, a user returns the 2nd switching valve 57 to a closed state, and switches the 1st switching valve 56 to a 2nd state. Thereby, compressed gas is supplied from the pressure tank 78 to the 1st airtight container 11, and the sewage in the 1st airtight container 11 is rapidly transferred to the 2nd airtight container 12 (illustration omitted). The user switches the first switching valve 56 to the closed state after all the sewage in the first sealed container 11 has been transferred to the second sealed container 12. Then, the liquid disposal step is performed again. Through this liquid discarding step, the sewage in the second sealed container 12 is discharged as a sewage distribution 70. Thus, the waste cleaning operation is completed.

<Other variations>
In the above-described embodiment, only one of the pressure regulator 30 and the float valve 31 may be provided. For example, when only the pressure regulator 30 is provided, waste liquid can be prevented from overflowing from the first sealed container 11 by control using a liquid level sensor or the like.

  In the above-described embodiment, the negative pressure adjusting unit may be a component that increases the internal pressure of the first sealed container 11. For example, a gas vent valve 99 that introduces external gas to the first sealed container 11 can be used. Thereby, irrespective of the pressure regulator 30 and the float valve 31, the internal pressure of the 2nd airtight container 12 can be adjusted to a low value compared with the internal pressure of the 1st airtight container 11 with the 1st airtight container 11 made into a negative pressure. .

  In the above-described embodiment, a component (for example, a pump) that further reduces the internal pressure of the second sealed container 12 may be provided. In this case, the suction force acting on the waste liquid generation point 64 can be made constant.

  In the above-described embodiment, the gas suction passage is a pipe branched in two. However, two separate pipes may be used. In this case, one pipe is connected to the first gas discharge port 17 and the other pipe is connected to the second gas discharge port 27. Then, gas is simultaneously sucked from the first sealed container 11 and the second sealed container 12 through these two pipes using one or a plurality of pumps. Further, the pressure regulator 30 may be provided in a pipe connected to the first gas discharge port 17.

  In the above-described modification 3 and modification 4, the first suction operation and the second suction operation can be switched. However, the waste liquid suction device (the gas in the first sealed container 11 is changed so that only the first suction operation can be performed). A device that is sucked into the gas suction pipe (branch suction passage) 23 via the second sealed container 12 may be configured.

  In the above-described Modification 3 and Modification 4, the container connection pipe 22 corresponds to the connection suction passage. However, the upper space of the first sealed container 11 and the upper space of the second sealed container 12 are separated from the container connection pipe 22. May be provided as a connection suction passage, and a part that imparts pressure loss such as an on-off valve may be provided in this conduit.

  The present invention is applicable to a waste liquid suction device that sucks waste liquid generated at a medical site.

DESCRIPTION OF SYMBOLS 10 Waste liquid suction apparatus 11 1st airtight container 12 2nd airtight container 15 1st liquid suction port 16 1st liquid discharge port 17 1st gas discharge port 22 Container connection pipe (container connection passage, connection suction passage)
23 Gas suction pipe (gas suction passage, branch suction passage)
25 Liquid discharge pipe 26 2nd liquid suction port 27 2nd gas discharge port 30 Pressure regulator (negative pressure adjustment part)
31 Float valve (negative pressure adjusting part)

Claims (10)

A waste liquid suction device that sucks waste liquid generated at medical sites,
A first sealed container that is provided with a first liquid suction port and a first liquid discharge port, and stores waste liquid sucked from the outside through the first liquid suction port;
A second liquid suction port connected to the first liquid discharge port, a second sealed container for storing waste liquid transferred from the first sealed container through the second liquid suction port;
A gas suction passage for sucking gas from the first sealed container and the second sealed container;
By sucking gas from the first sealed container and the second sealed container through the gas suction passage to form a negative pressure in both the first sealed container and the second sealed container, from the outside While the waste liquid is sucked into the first sealed container, a differential pressure is generated between the first sealed container and the second sealed container, and the first sealed air is discharged through the first liquid discharge port and the second liquid suction port. A waste liquid suction device configured to transfer waste liquid from a container to the second sealed container. As the gas suction passage, a branch suction passage that branches into the first gas suction pipe connected to the first sealed container and a second gas suction pipe connected to the second sealed container, and the first sealed container; A connection suction passage connecting the second sealed container,
A first state in which the first gas suction pipe is closed and the second gas suction pipe is in an open state during a period of sucking gas from the outlet of the branch suction passage; and the first gas suction pipe and the first gas suction pipe A suction switching unit capable of switching between the second state in which both the two gas suction pipes are open,
2. The waste liquid suction device according to claim 1, wherein the gas in the first sealed container is sucked into the second sealed container through the connection suction passage during a period in which the suction switching unit is set in the first state. A compressed gas port for introducing compressed gas from the outside, a pressure tank for storing the compressed gas introduced from the compressed gas port;
A compressed gas supply pipe for supplying compressed gas in the pressure tank to at least one of the first sealed container and the second sealed container;
An opening and closing mechanism for opening and closing the compressed gas supply pipe,
The waste liquid suction device according to claim 1, wherein the pressure tank is disposed in the second sealed container. The gas suction passage has a branch suction passage that branches into a first gas suction pipe connected to the first sealed container and a second gas suction pipe connected to the second sealed container,
The waste liquid suction device according to claim 1, further comprising a negative pressure adjustment unit that adjusts a flow rate of the gas flowing through the first gas suction pipe.   As the negative pressure adjusting unit, a pressure regulator provided in the first gas suction pipe and a float valve for closing the first gas suction pipe when a liquid level exceeds a predetermined water level in the first sealed container are provided. The waste liquid suction device according to claim 4.   The waste liquid suction device according to any one of claims 1 to 5, wherein a volume of the first sealed container is smaller than a volume of the second sealed container.   The waste liquid suction device according to any one of claims 1 to 6, wherein the first liquid discharge port is open to a bottom surface of the first sealed container. A waste liquid suction device that sucks waste liquid generated at medical sites,
A sealed container provided with a liquid suction port for sucking waste liquid from the outside and a liquid discharge port for discharging the sucked waste liquid;
A compressed gas port for introducing compressed gas from the outside, a pressure tank for storing the compressed gas introduced from the compressed gas port;
A compressed gas supply pipe for supplying the compressed gas in the pressure tank to the sealed container; and an opening and closing mechanism for opening and closing the compressed gas supply pipe,
The said pressure tank is a waste liquid suction device arrange | positioned in the said airtight container. A waste liquid suction method for sucking waste liquid generated at a medical site,
By sucking gas from the first sealed container and the second sealed container, a negative pressure is formed in both the first sealed container and the second sealed container, and the first sealed container is provided in the first sealed container. A step of sucking external waste liquid from the first liquid suction port into the first sealed container;
While sucking external waste liquid from the first liquid suction port into the first closed container, a differential pressure is generated between the first closed container and the second closed container, and the first closed container and the second closed container are generated. A waste liquid suction method, comprising: transferring waste liquid from the first closed container to the second closed container through a container connection passage connecting the closed container. A cleaning method for cleaning the waste liquid suction device according to any one of claims 1 to 8,
Supplying cleaning water to each of the first sealed container and the second sealed container to wash each of the first sealed container and the second sealed container;
The first liquid discharge port and the second liquid suction port allow the first liquid discharge port and the second liquid suction port to suck the gas from at least the second closed container of the first closed container and the second closed container. A method for cleaning a waste liquid treatment apparatus, comprising a step of transferring sewage in an airtight container to the second airtight container.

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