JP2010115223A - Table-top washing apparatus for medical instrument and washing method for medical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a table-top washing apparatus for medical instrument which can effectively wash the inside of a tubular medical instrument, does not contaminate other medical instruments, can be comfortably used by a washing worker, is compact, and has an efficient washing capability. <P>SOLUTION: This table-top washing apparatus for medical instrument includes a washing tub equipped with an ultrasonic oscillating means, a water feeding path, a circulation path, and a waste liquid path. The table-top washing apparatus washes tubular medical instruments or the like as washing objects, and includes a suction path which is connected with a suction tank from the washing tub through a washing object. A valve is installed between the connecting section of the washing object and the suction tank, and a suction pump is connected with the suction tank. In the table-top washing apparatus for medical instrument, a washing liquid is accumulated in the washing tub, and the inside of the suction tank is made a negative pressure by the suction pump. By opening the valve between the washing object and the suction tank, sordes or the like in the washing object arranged in the suction path are sucked and washed away into the tank by the washing liquid which rapidly moves by a pressure difference between the washing tub and the suction pump, and thus, the circulation-washing is made possible. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention uses a small-sized cleaning device (hereinafter referred to as a medical device tabletop cleaning device) for cleaning a medical device, in particular, a medical device having a tubular shape (for example, a suction fistula for nasal nose), and the medical device tabletop cleaning device. The present invention relates to a medical instrument cleaning method.

  A medical device having a tubular shape is frequently used for inspection and treatment of otolaryngology and the like. The medical device having such a tubular shape is contaminated with dirt, fungus, etc. on the patient's ear, nose and throat by use. Since expensive medical devices cannot be disposable, the medical devices are repeatedly reused. Accordingly, such a tubular medical device is required to be sufficiently washed in order to prevent infection of various bacteria to others.

  Conventionally, a tubular medical instrument has been manually cleaned using a brush or the like. However, the degree of contamination of the tubular medical device cannot be completely grasped from the appearance, and it has been difficult to perform sufficient cleaning. For this reason, various cleaning apparatuses have been disclosed for the purpose of sufficient cleaning ability and labor saving.

  As the cleaning device, for example, in a cleaning device for cleaning an object to be cleaned, a cleaning tank that stores the object to be cleaned, and an injection nozzle that jets cleaning liquid toward the object to be cleaned stored in the cleaning tank , Ultrasonic generator for performing ultrasonic cleaning on the cleaning object stored in the cleaning tank, discharge valve for discharging the cleaning liquid in the cleaning tank, injection nozzle, ultrasonic generator, discharge A control unit that controls the valve, and the control unit sprays and cleans an object to be cleaned by spraying the cleaning liquid from the spray nozzle, controls the discharge valve, and the cleaning liquid sprayed from the spray nozzle for the spray cleaning A cleaning apparatus (for example, refer to Patent Document 1) is known in which an ultrasonic wave is controlled by immersing a cleaning object in a cleaning liquid and then controlling the ultrasonic generator to perform ultrasonic cleaning. .

  In addition, for example, a cleaning tank that stores a medical instrument as an object to be cleaned, a cleaning liquid supply unit that supplies a cleaning liquid into the cleaning tank, an ultrasonic generator that applies ultrasonic vibration to the cleaning liquid in the cleaning tank, A cleaning device for a medical instrument that performs ultrasonic cleaning with the cleaning liquid degassed by the degassing means (for example, patent document) 2) is known.

JP 2002-355624 A JP 2007-130037 A

  In the invention according to Patent Document 1, the cleaning liquid is sprayed from the spray nozzle, the cleaning target is spray-cleaned, the discharge valve is controlled, and the cleaning liquid sprayed from the spray nozzle for the spray cleaning is placed in the cleaning tank. Therefore, after the object to be cleaned is immersed in the cleaning liquid, ultrasonic cleaning is performed by controlling the ultrasonic generator, so that a certain effect can be obtained in external cleaning and labor saving. However, although the outer surface of the tubular medical device, which is the object to be cleaned, can be sufficiently washed away by the injection by the injection nozzle, the inside cannot be said to be sufficiently cleaned.

  The invention according to Patent Document 2 includes an ultrasonic generator that applies ultrasonic vibration to the cleaning liquid in the cleaning tank, and a deaeration unit provided in the middle of a circulation system that circulates the cleaning liquid in the cleaning tank by a circulation mechanism. The invention is intended to improve the effect of ultrasonic cleaning in the cleaning liquid by performing ultrasonic cleaning with the cleaning liquid deaerated by the degassing means. By this invention, it is considered that the effect of ultrasonic cleaning is improved. However, the inside of the tubular medical device tends to retain the cleaning liquid in the cleaning tank, and it is still not sufficient to eliminate the state in which large filth remains.

  In addition, since the cleaning operation is basically performed in the cleaning tank, filth etc. is discharged from the inside of the annular medical device to the entire cleaning tank, and temporarily such filth etc. remains in the cleaning tank. Other medical devices that are subsequently cleaned can become contaminated. Moreover, it is very uncomfortable for the cleaning operator that the filth discharged to the cleaning tank floats.

  Furthermore, a compact tabletop cleaning device that is easy to carry and install is required to reduce the size and cost of each valve and pump as much as possible. There are also circumstances that make it more difficult to increase the output.

  The present invention has been made in view of the above circumstances, and the inside of a tubular medical instrument can be more effectively cleaned, the inside of the cleaning tank is hardly contaminated, and another medical instrument that is newly cleaned after cleaning is provided. A problem to be solved by the present invention is to provide a tabletop cleaning apparatus for medical instruments that can be used comfortably by a cleaning operator without being contaminated, is compact, and has an efficient cleaning performance, at low cost. To do.

  A cleaning tank provided with ultrasonic oscillation means, a water supply path to the cleaning tank, a circulation path for circulating the cleaning liquid in the cleaning tank, and a waste liquid path for discarding the cleaning liquid in the cleaning tank, and is tubular as a cleaning object In a tabletop cleaning apparatus for a medical instrument including a medical instrument, the suction tank includes a suction path connected to a suction tank from a cleaning tank via a cleaning target, and a valve is provided between the cleaning target and the suction tank in the suction path. The suction target is connected to the suction tank for making the inside negative pressure, the cleaning liquid is retained in the cleaning tank, and the pressure in the suction tank is set to high vacuum by the suction pump. By opening the valve between the suction tank and the suction tank, the cleaning liquid that moves suddenly due to the pressure difference between the cleaning tank and the suction pump is used to remove the filth inside the object to be cleaned placed in the suction path. To swept away, in a state of discharging the waste, the tabletop cleaning apparatus for medical instruments which allows circulation washing, a means for solving the problems.

  According to the first aspect of the present invention, the cleaning tank provided with the ultrasonic oscillation means, the water supply path to the cleaning tank, the circulation path for circulating the cleaning liquid in the cleaning tank, and the waste liquid path for discarding the cleaning liquid in the cleaning tank A tabletop cleaning apparatus for a medical instrument that includes a tubular medical instrument as a cleaning object, and a suction path that leads from the cleaning tank to the suction tank via the cleaning object, and a connection part of the cleaning object in the suction path; A valve is provided between the suction tank and a suction pump for making the inside of the suction tank a negative pressure. The suction tank is connected to the suction tank and the cleaning liquid is retained in the cleaning tank. When the valve between the object to be cleaned and the suction tank is opened, the inside of the object to be cleaned disposed in the suction path is cleaned by the cleaning liquid that moves rapidly due to the pressure difference between the cleaning tank and the suction pump. The by sweeping away into the suction tank, that it allows the circulation washing, can significantly reduce the retention of dirt inside the object to be cleaned, and the like.

  In addition, by combining a suction pump and a suction tank, even in the case of a low-output suction pump, the suction tank can be evacuated little by little with the suction valve closed, so that the inside of the suction tank can be made high vacuum. In spite of being inexpensive, the inside of the tubular medical instrument, which is the object to be cleaned, can be pulled in at a moment when the suction valve is opened.

  According to the second aspect of the present invention, the cartridge for mounting a plurality of objects to be cleaned is disposed in the cleaning tank after the structure of the first aspect of the present invention is provided. A structure including a cartridge suction port for sucking the inside of an object, a structure for sucking from the inside of the object to be cleaned through a cartridge suction port, and a structure for cleaning the outside of the object to be cleaned with a cleaning liquid stored in a cleaning tank Therefore, the outside of the tubular medical device is washed in the washing tank, and in parallel with this, the inside of the tubular medical device is pushed into the drawing tank, and the circulatory washing can be performed in a state where the filth is discharged. Thereby, the stay of the filth inside the object to be cleaned can be further reduced, and the contamination of the filth into the washing tank can be prevented, and the medical instrument can be washed.

  According to the invention of claim 3, in addition to the configuration of the invention of claim 1 or claim 2, the CPU includes control means for executing the automatic operation program, and the ultrasonic oscillation means of the cleaning tank is And an umbrella-shaped ultrasonic oscillator, the ultrasonic oscillator is installed on the lower surface of the lid of the washing tank, and a heater is installed at the bottom of the washing tank, and the washing liquid is a weak alkaline washing containing a proteolytic enzyme. Since the control means is configured to control the cleaning liquid temperature at the time of cleaning to about 50 ° C., and to control the cleaning liquid temperature at the time of circulation and sterilization to about 80 ° C. to 93 ° C. with the heater. In a state where the proteolytic enzyme has the highest detergency, excellent detergency can be exhibited by performing the washing in the inventions according to claim 1 and claim 2, and in the inventions according to claims 1 and 2 above. Killing during circulation or storage Effect can be increased. In addition, when the temperature at the time of sterilization falls below 80 degreeC, sufficient sterilization performance cannot be ensured. Further, if the upper limit is about 93 ° C., if the temperature rises further than this, the loss of the cleaning liquid due to evaporation becomes great, and it becomes necessary to newly supply hot water, and the temperature control efficiency is significantly reduced.

  According to the invention of claim 4, the tubular medical instrument that is the object to be cleaned is connected to the suction path in a state where the cleaning liquid is retained in the cleaning tank, and the suction path is made continuous in the pipe of the medical instrument. The valve between the tube and the tubular medical device is closed, the suction tank is made negative by the suction pump, and the valve between the tubular medical device and the suction tank is opened, the pressure difference between the washing tank and the suction pump By having the process of flushing the filth inside the object to be cleaned arranged in the suction path into the suction tank and discharging the filth by the cleaning liquid that moves rapidly due to the filth etc., the filth etc. may be discharged into the cleaning tank. In addition, the inside of the washing tank is not easily contaminated, and other medical instruments to be newly washed after washing are not contaminated, so that the washing operator can comfortably use them.

  According to the invention according to claim 5, on the premise that the function and effect according to claim 4 are provided, a cartridge provided with a cartridge suction port to which a plurality of tubular medical instruments can be connected and a connector that can be connected to a suction path By interposing between the suction path and the medical device, it is possible to remarkably improve the efficiency of cleaning the suction fistula tube.

  According to the invention according to claim 6, on the premise that the operational effect of the invention according to claim 4 or claim 5 is achieved, the object to be cleaned in the cleaning tank is parallel to the discharging process from the suction tank. Since the cleaning process is performed, more efficient cleaning performance can be exhibited.

  According to the invention according to claim 7, on the premise that the operational effect of the invention according to claim 4, claim 5 or claim 6 is achieved, the washing tank and the circulation are performed in parallel with the discharging step from the suction tank. By performing the circulation process of circulating the cleaning liquid through the route, higher efficiency can be achieved when repeating the consistent cleaning and circulation process.

  According to the invention according to claim 8, in the invention according to claim 6 or claim 7, the washing step of the object to be washed in the washing tank uses a weak alkaline detergent containing a proteolytic enzyme in the washing liquid. The cleaning liquid temperature is set to about 50 ° C. with a heater, or the cleaning liquid circulation step is set to about 80 ° C. to 93 ° C. to sterilize the cleaning tank and the circulation path. The sterilization temperature control that exquisitely balances the temperature control and the reduction of the cleaning liquid loss in the process and the sterilization performance can be realized, and extremely excellent cleaning and sterilization performance can be exhibited.

  A cleaning tank provided with ultrasonic oscillation means, a water supply path to the cleaning tank, a circulation path for circulating the cleaning liquid in the cleaning tank, and a waste liquid path for discarding the cleaning liquid in the cleaning tank, and is tubular as a cleaning object In a tabletop cleaning apparatus for a medical instrument including a medical instrument, a cartridge equipped with a plurality of objects to be cleaned is disposed in a cleaning tank, and the cartridge has a cartridge suction port for sucking the inside of the plurality of objects to be cleaned. A state in which a valve is provided between the object to be cleaned and the suction tank in the suction path, the suction tank for connecting the suction tank for making the inside of the suction tank negative, and the cleaning liquid is retained in the cleaning tank The suction tank is placed in a high vacuum state by the suction pump, and the valve between the object to be cleaned and the suction tank is opened, and the cleaning moves rapidly due to the pressure difference between the cleaning tank and the suction pump. By sucking the inside of the object to be cleaned through the cartridge suction port to the suction path connected to the suction tank, the waste inside the object to be cleaned arranged in the suction path is pushed into the suction tank, and the dirt is discharged. In this state, by performing circulating cleaning, the retention of filth within the object to be cleaned is further reduced, contamination is prevented from entering the cleaning tank, and excellent medical power is demonstrated for tubular medical devices. Realized a tabletop cleaning device for instruments.

  FIG. 1 is a schematic diagram showing the configuration of a tabletop cleaning apparatus for a medical instrument according to an embodiment of the present invention, and FIG. 2 shows a tabletop cleaning apparatus for a medical instrument according to the same embodiment (a) a plan view and (b) a front view. FIG. 3 is a (a) right side view and (b) rear view showing the tabletop cleaning apparatus for a medical instrument according to the embodiment.

  The tabletop cleaning apparatus 1 for a medical instrument according to an embodiment of the present invention is generally 48 cm long and horizontal as shown in the plan view of FIG. 2, the front view and the right side view of FIG. 3 and (b) the rear view. It is a tabletop type medical instrument tabletop cleaning device having a size of about 48 cm and a height of about 45 cm, and is suitable for a suction fistula tube 5 (see FIG. 5A) for an ear and nose as an object to be cleaned.

  The medical instrument cleaning apparatus according to the present embodiment includes a microcomputer, and a CPU (central processing unit) mounted on the microcomputer executes a predetermined program, such as each valve, pump, internal timer, sensor, and the like. Automatic operation is possible by controlling the operation. By selecting automatic with an automatic / manual changeover switch and pressing an automatic button, an operation predetermined by a program can be automatically executed under the control of the CPU. Moreover, it can switch to manual operation by selecting manual to the automatic / manual changeover switch.

  As shown in FIG. 1, the tabletop cleaning apparatus 1 for a medical instrument according to the present embodiment has three ultrasonic oscillators attached to the lower surface side of the cleaning tank 2, the suction tank 3, and the lid 4 of the cleaning tank 2. 40, hot water supply path R1, water supply path R2 and detergent charging path R12 for the cleaning tank 2, circulation path R7 for circulating the cleaning liquid in the cleaning tank 2, and cleaning liquid introduced into the vacuum tank from the tubular cleaning tank 2 which is the object to be cleaned A suction path, a drainage path R9 for discharging the cleaning liquid from the cleaning tank 2, and a suction tank side drainage path R11 for discharging the waste liquid containing waste from the suction tank 3. Each configuration will be described below.

  The cleaning tank 2 is configured to be connected to the hot water supply path R1, the water supply path R2, the detergent charging path R12, the circulation path R7, the suction path, and the drainage path R9. A door-like lid 4 that can be opened and closed is provided in the upper part of the cleaning tank 2, and three ultrasonic oscillators 40 are provided on the lower surface side of the lid 4. The ultrasonic oscillator 40 has an umbrella shape and can oscillate ultrasonic waves in the entire cleaning liquid stored in the cleaning tank. The lid 4 is provided with a damper (not shown) from the viewpoint of safety, and abrupt opening and closing of the lid 4 is restricted. Further, the lid 4 is provided with a steam escape hole 41 for allowing the steam generated by the cleaning to escape.

  On the inner bottom surface of the cleaning tank 2, a water discharge side opening of the circulation path R7 and a drain outlet 27 of the drain path R9 are opened. Further, a heater 43 is disposed on the bottom surface in the cleaning tank 2, and an inner bottom plate 26 serving as an inner bottom is provided above the heater 43. A large number of through holes 260 are formed in the inner bottom plate 26 so that the heater 43 is immersed in the cleaning liquid.

  Further, on the side surface of the cleaning tank 2, a cleaning tank side connection portion 22 for connecting one end of the cartridge to which the suction soot tube 5 as a cleaning object is mounted is provided. The cleaning tank side connection portion 22 includes a through hole for the side wall of the cleaning tank 2. In the present embodiment, the cleaning tank side connection portions 22 are arranged in the vertical direction, two on each side of the side surface of the cleaning tank 2.

  Further, on the side surface of the cleaning tank 2, a detergent inlet 25 in the detergent charging path R <b> 12 for supplying the detergent 21 to the cleaning tank 2, a water inlet side opening in the circulation path R <b> 7, a water inlet 24, a hot water outlet 23, and a layer An internal temperature sensor S1, a first overflow port 28, and a second overflow port 29 are provided.

On the inner bottom plate 26, four cartridges 7 that can be connected to 10 suction scissors 5 that are objects to be cleaned are stacked and arranged.
Each cartridge 7 is formed in a rectangular shape in plan view by a metal frame 73 and a sub-frame 74, and is fitted to the cleaning tank side connection portion 22 of the cleaning tank 2 at one end, and transfers the cleaning liquid and filth. A connector 72 serving as a path is provided. Further, in the frame 73, there are provided cartridge suction ports 70 corresponding to each of the ten suction pipes 5 by branching the liquid supply passage 76 from the connector into ten. One end of the suction soot tube 5 is connected to each cartridge suction port 70, and the other end of the suction soot tube 5 is opened.

  The above four cartridges 7 are loaded with the connectors 72 alternately arranged on the left and right sides, and the cleaning tank side connection portions 22 provided at corresponding positions in the cleaning tank 2 and the connectors 72 are connected. The configuration.

  The detergent charging path R12 is formed by a pipe connected from the detergent container 20 filled with the detergent 21 to the detergent charging port 25 using the detergent charging pump P2. For example, the detergent 21 is a non-foaming weak alkaline detergent formulated with a proteolytic enzyme (for example, Levicloth (trade name) dedicated detergent, which is a non-foamed weak alkaline detergent formulated with clean chemicals). Can be used.

  The cleaning object mounting portion includes a cartridge 7 for disposing four suction vertical tubes 5 in the vertical direction and 10 in the horizontal direction, a cleaning tank side connection portion 22a for connecting to the cartridge 7, and a suction tank side. The connection part 22b is provided. Therefore, it is possible to use a maximum of 40 suction soot tubes 5 connected at the same time, and it is possible to perform processing for each stage.

  The circulation path R7 is formed by a pipe connected to the upper part of the cleaning tank 2 from the outlet side opening through the pipe and the circulation pump P1.

  An overflow path R8 is provided in the vicinity of the upper end of the side surface of the cleaning tank from the second overflow port 29 and the first overflow port 28 provided from above. The overflow path R8 is connected to the drainage path R9. Further, a suction tank 3 drainage path R11 is connected to the overflow path R8, which will be described later. The space in the second overflow port 29 and the space in the first overflow port 28 are in communication.

  In the vicinity of the second overflow port 29, an abnormality detection sensor S3 for detecting an abnormality is provided. Further, in the vicinity of the first overflow port 28, a water supply / air blowing detection sensor S2 for detecting water supply and air supply is provided. In addition, a water flow sensor S6 is provided in the vicinity of the water supply / spraying detection sensor S2 and at a position closer to the drainage side.

  The suction path includes a first valve suction path R3, a second valve suction path R4, a third valve suction path R5, and a fourth valve suction path R6 on the connection side with the cartridge 7, and in addition to these four paths. The end side is connected to a suction tank side suction path R10, which is a common path.

  The suction tank 3 connects the suction tank side suction path R10, the suction tank side drainage path R11, and a suction pump P3 installed through a check valve V15. The suction tank 3 is provided with a suction pressure upper limit sensor S4 for detecting the upper limit of the suction pressure and a suction pressure sensor S5 for detecting the suction pressure. The suction tank side suction path R10 is provided with a suction tank side suction valve V10, and the suction tank side drainage path R11 is provided with a suction tank side drain valve V11. Further, a pressure release valve V9 is provided for releasing the pressure when the suction tank 3 is drained.

  In this configuration, the drainage port 27 at the bottom of the cleaning tank 2 is extended to the end via the drainage valve V12.

Next, a cleaning method using the tabletop cleaning apparatus 1 for medical instruments according to the present embodiment will be described.
As an operation before cleaning, as shown in the tabletop cleaning apparatus 1 for medical devices, each of the four cartridges 7 is connected to one end of the suction fistula tube 5 by connecting the cartridge suction port of the cartridge 7 with Five suction rods 5 are set for each cartridge 7, and the connector 72 of each cartridge 7 is connected to the corresponding cleaning tank side connection portion 22 in the cleaning tank 2.

  The cleaning of the medical device is sequentially performed in five steps: (A) preliminary cleaning step, (B) main cleaning step, (C) rinsing step, (D) hot water treatment step, and (E) drying step. Here, (A) pre-cleaning step and (B) main cleaning step make the inside of the suction tank 3 a negative pressure, and the valve between the object to be cleaned and the suction tank 3 is opened, and the cleaning tank 2 and the suction pump P3. In this step, the filth and the like in the maximum of 40 suction tubs 5 arranged in the suction path are washed away into the suction tank 3 by the cleaning liquid that moves abruptly due to the pressure difference, and the filth is discharged. In the rinsing step (C), rinsing is performed using the same decompression means. The (D) hot water treatment step is a step of disinfecting without using a solvent.

(A) Preliminary washing process It is set as the state which inject | poured the washing | cleaning liquid into the container for washing | cleaning liquid of the tabletop washing | cleaning apparatus 1 for medical instruments which concerns on an Example. Each valve of the tabletop cleaning apparatus 1 for medical instruments is fully closed in the initial state. The power supply of the tabletop cleaning apparatus 1 for medical instruments is turned on. Next, select automatic operation and press the start button.

  The water supply valve V2, the circulation valve V7, and the air venting circulation valve V8 are opened, and water supply (supply of cleaning liquid) is started into the cleaning tank 2. Further, water is supplied from the cleaning tank 2 to the circulation path R7 by the circulation valve V7. The water supply to the circulation path R7 is to prevent the circulation pump P1 and the like from being consumed due to the idling operation. In the preliminary cleaning step in this embodiment, hot water is not supplied and the detergent 21 is not added to the cleaning water.

In parallel with the water supply, a pressure reducing operation is performed to make the suction tank 3 have a negative pressure. The pressure release valve V9 and the suction tank side drain valve V11 are closed, the suction valves (first suction valve V3, second suction valve V4, third suction valve V5, fourth suction valve V6) are also closed, and the suction tank 3 is closed. The suction pump P3 is operated in a closed system state, and the pressure in the suction tank 3 is reduced to a state where the pressure value becomes a set value (7.5 × 10 ⁻² Pa) which is a high vacuum. When the suction pump P3 detects that the pressure set value has been reached by the suction pressure sensor S5, the CPU of the microcomputer stops the operation of the suction pump P3.

  The water supply is stopped in a state in which the detection of the water level by the water supply / empty detection sensor S2 and the flowing water sensor S6 is ON within the set time. It should be noted that when the water level abnormality detection sensor S3 is turned ON, or when the water level detection by the water supply / spraying detection sensor S2 and the flowing water sensor S6 is not detected within the set time, or the suction pressure sensor S5 of the suction tank 3 is set. When it takes more than the set time to reach the value, the CPU treats it as abnormality detection, and the buzzer for notifying abnormality and the abnormality display button are turned on.

Vacuum suction is performed in a state where the water supply is completed and the pressure value in the suction tank 3 has reached the set value.
In the vacuum suction, the suction of the circulation path R7, the suction of the first suction valve path R3, the suction of the second suction valve path R4, the suction of the third suction valve path R5, and the suction of the fourth suction valve path R6 are performed. In this embodiment, the vacuum suction in each of these suction valve paths (R3, R4, R5, R6) is not performed in parallel, but one by one in order.

  In the suction of the circulation path R7, the first suction valve V3, the second suction valve V4, the third suction valve V5, and the fourth suction valve V6 are all closed, and suction is performed with the circulation valve V7 opened. In the next suction of the first suction valve path R3, the circulation valve V7, the second suction valve V4, the third suction valve V5, and the fourth suction valve V6 are all closed, and the first suction valve V3 is opened. Aspirate. In any case, the suction is performed with the first suction valve V3 opened first, and the suction tank side suction valve V10 is opened under the negative pressure of the suction tank 3.

  In the suction of the first suction valve path R3, the cleaning liquid passes from the cleaning tank 2 through the opening side end of the suction trough 5 which is the object to be cleaned, the liquid feeding passage of the cartridge 7, and passes through the first suction valve V3 and the suction tank. It is introduced into the suction tank 3 via the side suction valve V10. By sucking the cleaning liquid, the filth in the suction tub tube 5 is introduced into the suction tank 3. When the cleaning liquid enters the suction tank 3, the pressure in the suction tank 3 rises. When the vacuum upper limit sensor detects that the set value has been reached, the CPU opens the pressure release valve V9 and the suction tank side drain valve V11. To control. The cleaning liquid and the filth are discharged to the outside from the suction tank side drain valve V11 through the drain path R9. The depressurization valve V9 and the suction tank side drain valve V11 are controlled to be closed with the passage of a set time for completing drainage based on the drainage amount and the flow rate.

  Thereafter, the same process as the first suction valve path R3 is performed once for each of the second suction valve path R4, the third suction valve path R5, and the fourth suction valve path R6. That is, the cleaning liquid passes from the cleaning tank 2 to the opening side end of the suction tub tube 5 that is the object to be cleaned, the liquid feeding passage of the cartridge 7, the second suction valve V 4 that is the valve of the corresponding path, and the third suction. It is introduced into the suction tank 3 via either the valve V5 or the fourth suction valve V6 and the suction tank side suction valve V10, and the filth in the suction soot pipe 5 is introduced into the suction tank 3 by suction of the cleaning liquid. When the vacuum upper limit sensor detects that the set value has been reached, the CPU controls the pressure release valve V9 and the suction tank side drain valve V11 to be opened. The cleaning liquid and the filth are discharged to the outside from the suction tank side drain valve V11 through the drain path R9. The depressurization valve V9 and the suction tank side drain valve V11 are controlled to be closed with the passage of a set time for completing drainage based on the drainage amount and the flow rate. That is, the suction of ten suction rods 5 attached to each one path corresponding to each suction valve (first suction valve V3, second suction valve V4, third suction valve V5, fourth suction valve V6). Cleaning will be performed.

  After the suction of each suction valve path (R3, R4, R5, R6) is completed and the first suction valve V3, the second suction valve V4, the third suction valve V5, and the fourth suction valve V6 are closed, suction is performed. While continuing to drain the tank 3, new water is supplied to the cleaning tank 2. When the completion of water supply is detected, ultrasonic waves are oscillated from the ultrasonic oscillator 40 for 1 minute.

  After the ultrasonic cleaning is completed, the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, and the air bleeding circulation valve V8 are opened, and the circulation pump P1 is turned on. Operate.

  When the cleaning liquid (water) is circulated in the cleaning tank 2 and the circulation path R7 for a set time, the CPU performs the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, The air vent circulation valve V8 is closed, the drain valve V12 for draining the cleaning liquid in the cleaning tank 2 is opened, and the used cleaning liquid in the cleaning tank 2 is drained from the drainage path R9. The states of the pressure release valve V9 and the suction tank side drain valve V11 at the final time are kept open.

(B) Main cleaning step In the main cleaning step of the cleaning method using the tabletop cleaning apparatus 1 for medical instruments according to the present embodiment, the cleaning liquid component plus the detergent 21 is used. As described above, the detergent 21 added in this embodiment is a non-foamed weak alkaline detergent containing a proteolytic enzyme.

  In this step, first, the hot water supply valve V1, the circulation valve V7, and the air vent circulation valve V8 are opened, and all other valves are closed. Hot water supply (supply of cleaning liquid) is started into the cleaning tank 2. The pump operates only the circulation pump P1. Hot water is supplied from the washing tank 2 to the circulation path R7 via the circulation valve V7 by the operation of the circulation pump P1. The temperature of the cleaning liquid is generally controlled at 50 ° C. as a temperature at which the cleaning power of the detergent 21 is excellent. In parallel with the hot water supply, the detergent pump is operated, and the detergent 21 is supplied into the washing tank 2 for a predetermined time by an internal timer. The detergent pump stops after the operating time has elapsed.

  Completion of the hot water supply is detected by the flowing water sensor S6 and the water supply / empty detection sensor S2, and the CPU closes the hot water supply valve V1, the circulation valve V7, and the air venting circulation valve V8. If the water level abnormality detection sensor S3 detects a water level abnormality, or if the water level detection by the water supply / splashing detection sensor S2 and the flowing water sensor S6 does not turn on within the set time, the CPU treats it as abnormality detection. A buzzer to notify the abnormality and an abnormality display button are lit.

  Next, the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, the air venting circulation valve V8, the pressure relief valve V9, and the suction tank side drain valve V11 are set. The circuit is opened and the circulation pump P1 is operated. Note that the pressure release valve V9 and the suction tank side drain valve V11 are opened in order to discharge the moisture in the suction tank 3 to the outside as much as possible.

  When the set time has elapsed, the circulation pump P1 is stopped, and the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, and the air venting circulation valve V8 are closed. To do. Then, ultrasonic waves are oscillated from the ultrasonic oscillator 40 for a predetermined time to perform ultrasonic cleaning.

  The ultrasonic oscillator 40 operates until the suction pressure sensor S5 reaches a set value. Note that if the arrival time until the set value of the suction pressure sensor S5 is longer than the set time, if the oscillation of ultrasonic waves is not detected, or if the pressure upper limit state is detected by the vacuum upper limit sensor, the CPU is abnormal. Detects and handles, turns on the buzzer to notify the abnormality and the abnormality display button.

In parallel with the ultrasonic cleaning, the suction pump P3 is operated to make the inside of the suction tank 3 have a negative pressure. The pressure reducing operation for setting the negative pressure is performed until the pressure value in the suction tank 3 reaches a set value (7.5 × 10 ⁻² Pa) which is a high vacuum.

When the ultrasonic cleaning is completed and the pressure in the suction tank 3 is reduced to the set value (7.5 × 10 ⁻² Pa) which is a high vacuum, the vacuum suction is performed. I do.

  The vacuum suction is automatically performed in the same order as the vacuum suction in the previous pre-cleaning step. That is, the suction of the first suction valve path R3, the suction of the second suction valve path R4, the suction of the third suction valve path R5, and the suction of the fourth suction valve path R6 are performed. In the suction of the first suction valve path R3, the cleaning liquid passes from the cleaning tank 2 through the opening side end of the suction trough 5 which is the object to be cleaned, the liquid feeding passage of the cartridge 7, and passes through the first suction valve V3 and the suction tank. It is introduced into the suction tank 3 via the side suction valve V10. By sucking the cleaning liquid, the filth in the suction tub tube 5 is introduced into the suction tank 3. When the cleaning liquid enters the suction tank 3, the pressure in the suction tank 3 rises. When the vacuum upper limit sensor detects that the set value has been reached, the CPU opens the pressure release valve V9 and the suction tank side drain valve V11. To control. The cleaning liquid and the filth are discharged to the outside from the suction tank side drain valve V11 through the drain path R9. The depressurization valve V9 and the suction tank side drain valve V11 are controlled to be closed with the passage of a set time for completing drainage based on the drainage amount and the flow rate. Further, the same process as the first suction valve path R3 is performed once for each of the second suction valve path R4, the third suction valve path R5, and the fourth suction valve path R6. The state of the pressure release valve V9 and the suction tank side drain valve V11 at the final time is set to the open state.

(C) Rinsing step In this rinsing step, the hot water supply valve V1, the circulation valve V7, and the air venting circulation valve V8 are first opened. The open state of the pressure relief valve V9 and the suction tank side drain valve V11 is maintained. Close all other valves. Hot water supply (supply of cleaning liquid) is started into the cleaning tank 2. The pump operates only the circulation pump P1. Hot water is supplied from the washing tank 2 to the circulation path R7 via the circulation valve V7 by the operation of the circulation pump P1. The temperature of the cleaning liquid is generally controlled at 50 ° C. The reason for using hot water instead of water supply is to improve the rinsing performance by increasing the solubility of the remaining detergent 21.

  Completion of the hot water supply is detected by the flowing water sensor S6 and the water supply / empty detection sensor S2, and the CPU closes the hot water supply valve V1, the circulation valve V7, and the air venting circulation valve V8. If the water level abnormality detection sensor S3 detects a water level abnormality, or if the water level detection by the water supply / splashing detection sensor S2 and the flowing water sensor S6 does not turn on within the set time, the CPU treats it as abnormality detection. A buzzer to notify the abnormality and an abnormality display button are lit.

  Next, the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, and the air bleeding circulation valve V8 are opened, and the circulation pump P1 is operated. Note that the pressure relief valve V9 and the suction tank side drain valve V11 remain open.

  When the set time has elapsed, the circulation pump P1 is stopped, and the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, and the air venting circulation valve V8 are closed. To do. The pressure release valve V9 and the suction tank side drain valve V11 are kept open. Then, ultrasonic waves are oscillated from the ultrasonic oscillator 40 for a predetermined time to perform ultrasonic cleaning.

  The vacuum suction is automatically performed in the same order as the vacuum suction in the preliminary cleaning process and the main cleaning process. That is, the suction of the first suction valve path R3, the suction of the second suction valve path R4, the suction of the third suction valve path R5, and the suction of the fourth suction valve path R6 are performed. In the suction of the first suction valve path R3, the cleaning liquid passes from the cleaning tank 2 through the opening side end of the suction trough 5 which is the object to be cleaned, the liquid feeding passage of the cartridge 7, and passes through the first suction valve V3 and the suction tank. It is introduced into the suction tank 3 via the side suction valve V10. By sucking the cleaning liquid, the filth in the suction tub tube 5 is introduced into the suction tank 3. When the cleaning liquid enters the suction tank 3, the pressure in the suction tank 3 rises. When the vacuum upper limit sensor detects that the set value has been reached, the CPU opens the pressure release valve V9 and the suction tank side drain valve V11. To control. The cleaning liquid and the filth are discharged to the outside from the suction tank side drain valve V11 through the drain path R9. The depressurization valve V9 and the suction tank side drain valve V11 are controlled to be closed with the passage of a set time for completing drainage based on the drainage amount and the flow rate. Further, the same process as the first suction valve path R3 is performed once for each of the second suction valve path R4, the third suction valve path R5, and the fourth suction valve path R6. The states of the pressure release valve V9 and the suction tank side drain valve V11 at the final time are set to the open state, and the drain valve V12 is set to the open state.

Next, the following process Y (hot water supply, circulation, drainage and drainage in the suction tank 3 performed in parallel with these) is repeated a set number of times.
Process Y: The hot water supply valve V1, the circulation valve V7, and the air bleeding circulation valve V8 are opened. The open state of the pressure relief valve V9 and the suction tank side drain valve V11 is maintained. Close all other valves. Start hot water supply (supply of cleaning liquid) into the cleaning tank. The pump operates only the circulation pump P1. Hot water is supplied from the washing tank to the circulation path R7 via the circulation valve V7 by the operation of the circulation pump P1. Completion of the hot water supply is detected by the flowing water sensor S6 and the water supply / empty detection sensor S2, and the CPU closes the hot water supply valve V1, the circulation valve V7, and the air venting circulation valve V8. The first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, and the air bleeding circulation valve V8 are opened, and the circulation pump P1 is operated. The pressure release valve V9 and the suction tank side drain valve V11 are kept open. As the set time elapses, the circulation pump P1 is stopped, the drainage valve V12 of the drainage path R9 is opened, and the used liquid in the cleaning tank 2 is discharged.

(D) Hot water treatment process After the process Y is repeated a set number of times, a heat treatment process is performed.
The circulation valve V7, the pressure relief valve V9, the suction tank side drain valve V11, the hot water supply valve V1, the circulation valve V7, and the air vent circulation valve V8 are opened, and the other valves are closed. When hot water supply is started and the running water sensor S6 and the water supply / empty detection sensor S2 detect the completion of hot water supply, the CPU closes the hot water supply valve V1 and the air vent circulation valve V8.

  The first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, the air venting circulation valve V8, the pressure relief valve V9, and the suction tank side drain valve V11 are opened. The circulation pump P1 and the heater 43 are operated. The cleaning liquid (hot water) is circulated until the hot water temperature reaches 80 ° C., which is the set temperature, by heating.

  When it is detected that the set temperature is 80 ° C., the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6, the circulation valve V7, and the air venting circulation valve V8 are closed. The heater 43 is further heated to raise the temperature of the cleaning liquid to 93 ° C., which is the next set temperature. When the set temperature is reached, the temperature is held for 10 minutes. By this warming process, the suction tub tube 5 which is the object to be cleaned is sterilized and cleaned.

  After sterilization, drain. Since the cleaning liquid is hot, water is supplied from the water supply path R2 into the cleaning tank 2, and the temperature of the cleaning liquid is lowered and drained. While controlling the increase / decrease in the amount of water by the flowing water sensor S6 and the water supply / empty detection sensor S2, the water is discharged through the overflow path R8. That is, when the cleaning liquid enters the overflow path R8 from the first overflow port 28 and the second overflow port 29, and the cleaning liquid is detected by the water supply / spraying detection sensor S2 that detects the high water level, the water supply valve V2 is closed and the low water level is decreased. When the flowing water sensor S6 to detect cannot detect the cleaning liquid for 5 seconds, the water supply valve V2 is opened. When the hot water temperature falls below the set temperature, the drain valve V12 is opened, and the cleaning liquid is drained through the drain path R9.

(E) Drying process (vacuum suction and air replacement)
Next, corresponding to each cartridge 7, vacuum suction is performed for each path of the first suction valve V3, the second suction valve V4, the third suction valve V5, the fourth suction valve V6 and the circulation path R7, and the object to be cleaned The water in the suction tub tube 5 and the apparatus, which is an object, is removed (hereinafter, water removal operation Z).
The following water removal operation Z is repeated a set number of times.
Moisture removal operation Z: With each valve closed, the suction pump P3 is operated, and the pressure is reduced until the pressure value in the suction tank 3 reaches a set value (7.5 × 10 ⁻² Pa) which is a high vacuum. . When the set value is reached, the circulation valve V7 and the suction tank side suction valve V10 are opened, and moisture is drawn into the suction tank 3. After the set time, the same vacuum suction is sequentially performed for the first suction valve path R3, the second suction valve path R4, the third suction valve path R5, and the fourth suction valve path R6.

After repeating the water removal operation Z a set number of times, the drain valve V12, the pressure release valve V9, and the suction tank side drain valve V11 are opened, and the slight water remaining in the cleaning tank 2 and the suction tank 3 is discharged.
Thus, the automatic cleaning operation of the tabletop cleaning apparatus 1 for medical instruments according to the present embodiment is completed.

  Note that the present invention is not limited to the above-described embodiment, and valves are added and positions are changed in each pipe, the number and timing of processing, the number of cartridges 7 and the number of cartridge suction ports per cartridge 7, etc. Can be changed freely.

  Although not disclosed in the present embodiment, for example, as another means for lowering the temperature of the high temperature drainage from the cleaning tank 2, a drainage mixer that mixes the low temperature drainage from the suction tank in the drainage path R9. By providing, the temperature of hot water can also be lowered.

  In the present invention, heaters, hot water, and water are used as temperature control means in the above-described embodiments. However, the present invention is not limited to this, and various known heat exchange means can be used in any temperature control of heating and cooling. Can be used.

  Moreover, in the said Example, although automatic and manual operation | movement is enabled, it is not restricted to this, For example, it can also be set as the structure which can only perform an automatic driving | operation.

Schematic which shows the structure of the tabletop washing | cleaning apparatus for medical instruments which concerns on the Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS (a) Top view and (b) Front view which show the tabletop washing | cleaning apparatus for medical instruments which concerns on the Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS (a) Right view which shows the tabletop washing | cleaning apparatus for medical devices which concerns on the Example of this invention, (b) Back view. The perspective view which shows the (a) plane, front, and left side of a cartridge in the tabletop washing apparatus for medical instruments concerning the example of the present invention, and (b) the plane, the front, and the right side. BRIEF DESCRIPTION OF THE DRAWINGS (a) The perspective view which shows the suction fistula which is a washing | cleaning target object of the tabletop washing | cleaning apparatus for medical instruments which concerns on the Example of this invention, (b) The perspective view which shows the state which attached the suction fistula to the cartridge. BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows each process of the desktop cleaning apparatus for medical devices which concerns on the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Desk cleaner for medical instruments 2 Cleaning tank 20 Detergent container 21 Detergent 22a Cleaning tank side connection part 22b Suction tank side connection part 23 Hot water supply port 24 Water supply port 25 Detergent input port 26 Inner bottom plate 260 Through-hole 27 Drainage port 28 1st Overflow port 29 Second overflow port 3 Suction tank 4 Lid 40 Ultrasonic oscillator 41 Vapor escape hole 43 Heater 5 Object to be cleaned (suction pipe)
7 Cartridge 70 Cartridge suction port 71 Handle 72 Connector 73 Frame P1 Circulation pump P2 Detergent pump P3 Suction pump R1 Hot water supply route R2 Water supply route R3 First suction valve route R4 Second suction valve route R5 Third suction valve route R6 Fourth Suction valve path R7 Circulation path R8 Overflow path R9 Drainage path R10 Suction tank side suction path R11 Suction tank side drainage path R12 Detergent input path S1 Tank temperature sensor S2 Water supply / vacant detection sensor S3 Abnormality detection sensor S4 Suction pressure upper limit sensor S5 Suction pressure sensor S6 Flowing water sensor V1 Hot water supply valve V2 Water supply valve V3 First suction valve V4 Second suction valve V5 Third suction valve V6 Fourth suction valve V7 Circulation valve V8 Air venting circulation valve V9 Pressure relief valve V10 Suction tank side suction valve V11 Suction tank side drain valve V12 Drain valve V13 Constant flow valve V14 Constant flow valve V15 Check valve

Claims (8)

A cleaning tank provided with ultrasonic oscillation means, a water supply path to the cleaning tank, a circulation path for circulating the cleaning liquid in the cleaning tank, and a waste liquid path for discarding the cleaning liquid in the cleaning tank, and is tubular as a cleaning object In tabletop cleaning equipment for medical equipment including medical equipment,
A suction path that leads from the cleaning tank to the suction tank through the object to be cleaned is provided, and a valve is provided between the connection part of the object to be cleaned and the suction tank in the suction path, and suction for making the inside of the suction tank negative pressure Connect the suction tank to the pump,
With the cleaning liquid staying in the cleaning tank, the suction tank is set to a negative pressure by the suction pump, and the valve between the object to be cleaned and the suction tank is opened, and suddenly due to the pressure difference between the cleaning tank and the suction pump. A tabletop cleaning apparatus for a medical instrument, which enables circulatory cleaning by allowing dirt and the like inside a cleaning target disposed in a suction path to flow into a suction tank by a moving cleaning liquid.   A cartridge for mounting a plurality of objects to be cleaned is disposed in the cleaning tank, and the cartridge includes a cartridge suction port for sucking the inside of the plurality of objects to be cleaned, from the inside of the object to be cleaned through the cartridge suction port. 2. The tabletop cleaning apparatus for a medical instrument according to claim 1, wherein the cleaning apparatus is configured to perform suction with a suction path, and has a structure for cleaning the outside of the cleaning object with a cleaning liquid stored in a cleaning tank. The CPU comprises a control means for executing an automatic operation program, the ultrasonic oscillation means of the cleaning tank has an umbrella-shaped ultrasonic oscillator, the ultrasonic oscillator is installed on the lower surface of the lid of the cleaning tank, and Install the heater at the bottom of the washing tank,
The cleaning solution contains a weak alkaline detergent containing a proteolytic enzyme,
The said control means controls the washing | cleaning liquid temperature at the time of washing | cleaning to about 50 degreeC with the said heater, and controls the washing | cleaning liquid temperature at the time of circulation sterilization to about 80 to 93 degreeC. Cleaning device for medical equipment.   A tubular medical device to be cleaned is connected to the suction path in a state where the cleaning liquid stays in the cleaning tank, and the suction path is made continuous in the tube of the medical instrument, and a valve between the suction tank and the tubular medical instrument. The suction tank is closed to a negative pressure by the suction pump, and the valve between the tubular medical instrument and the suction tank is opened, and the suction path is opened by the cleaning liquid that moves rapidly due to the pressure difference between the cleaning tank and the suction pump. A method for cleaning a medical instrument, comprising a step of flushing filth and the like inside a disposed cleaning object into a suction tank and discharging the filth.   The medical device cleaning according to claim 4, wherein a cartridge equipped with a cartridge suction port capable of connecting a plurality of tubular medical devices and a connector connectable to the suction route is interposed between the suction route and the medical device. Method.   6. The medical instrument cleaning method according to claim 4, wherein a cleaning process of the cleaning object in the cleaning tank is performed in parallel with the discharging process from the suction tank.   The medical device cleaning method according to claim 4, 5 or 6, wherein a circulation step of circulating the cleaning liquid through the cleaning tank and the circulation path is performed in parallel with the discharging step from the suction tank.   The cleaning process of the object to be cleaned in the cleaning tank uses a weak alkaline detergent containing a proteolytic enzyme in the cleaning liquid and the cleaning liquid temperature is set to about 50 ° C. with a heater. The medical instrument cleaning method according to claim 6 or 7, wherein the cleaning tank and the circulation path are sterilized by setting the temperature to 93 ° C.

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