JPH10155899A - Medical circuit cleaning apparatus and medical circuit cleaning method - Google Patents

Abstract

(57) [Problem] To provide a medical circuit cleaning apparatus and a medical circuit cleaning method capable of removing biological harmful substances such as bacteria and endotoxin in a medical circuit. SOLUTION: The medical circuit cleaning apparatus comprises a medical circuit, a pump, a liquid introduction means, a liquid discharge means, a discharge circulation prevention means, and a particulate filter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical circuit cleaning apparatus and a medical circuit cleaning method, and more particularly, to a medical circuit cleaning apparatus and a medical circuit cleaning apparatus capable of removing biological harmful substances in a medical circuit. The present invention relates to a circuit cleaning method.

[0002]

2. Description of the Related Art Conventionally, a blood purification method for removing a solute to be removed from blood for the purpose of treating, for example, chronic renal failure, hepatic coma, drug intoxication, and autoimmune disease has been proposed. Extracorporeal circulation circuits, such as hemodialysis circuits, hemodiafiltration circuits, hemofiltration circuits, plasma separation circuits,
Plasma component separation circuit and peritoneal dialysis circuit, or, in the case of injecting a drug solution into a living body, in a medical circuit such as an injection line and an infusion circuit connecting a living body and a drug solution supply source, a predetermined liquid in the medical circuit When filling the medical circuit, after filling the predetermined liquid into the medical circuit, if the medical circuit is left untreated, the medical circuit may increase due to proliferation of bacteria and endotoxin in the medical circuit. Since the inside is contaminated, the prescribed treatment using the medical circuit has to be started immediately after the medical circuit is filled with the predetermined liquid.

[0003] That is, after the medical circuit is filled with the predetermined liquid, the predetermined liquid cannot be stored in the medical circuit.

[0004] Further, when the medical circuit filled with the predetermined liquid is left alone and the inside of the medical circuit is contaminated, the contaminated medical circuit is not used even if it is unused. The contaminated medical circuit can no longer be used for treatment, and the contaminated medical circuit is cleaned by a series of complicated cleaning operations, for example, cleaning with 2% sodium hydroxide solution for 24 hours, water cleaning, formalin disinfection and removal of the disinfecting solution. Had to wash.

In addition, if there is no time to clean the contaminated unused medical circuit, the unused medical circuit is discarded, so that waste is increased and a serious dust problem is caused. I was

As described above, since the predetermined liquid cannot be stored in the medical circuit, a preparatory operation for filling the predetermined liquid into the plurality of medical circuits cannot be performed in advance. Preparing work efficiency when using the medical circuit has become very poor, and improvement in working efficiency has been desired. In the medical field using the medical circuit, it is important to improve the working efficiency even for one minute or one second because a slight delay in treatment of the patient affects the life of the patient.

On the other hand, after predetermined treatment using the medical circuit is completed, for example, when the used hemodialyzer and the hemodialysis circuit are reused, the hemodialyzer and the hemodialysis circuit are disconnected. Each of them must be cleaned by a series of complicated cleaning operations, for example, cleaning with a 2% sodium hydroxide solution for 24 hours, water cleaning, formalin disinfection and removal of the disinfecting solution.

Therefore, the efficiency of cleaning the used hemodialyzer and the hemodialysis circuit is very poor, and it has been desired to improve the efficiency of the operation.

It is an object of the present invention to provide a medical circuit cleaning apparatus and a medical circuit cleaning method capable of removing biological harmful substances such as bacteria and endotoxin in a medical circuit.

Another object of the present invention is to provide a medical circuit capable of removing a harmful substance in the medical circuit even if the medical circuit is left after the medical circuit is filled with a predetermined liquid. It is an object of the present invention to provide a cleaning apparatus and a medical circuit cleaning method.

[0011] Another object of the present invention is to provide a method for storing a predetermined liquid in a medical circuit after the medical circuit is filled with the predetermined liquid, and automatically automatically storing a biological harmful substance in the medical circuit. It is an object of the present invention to provide a medical circuit cleaning device and a medical circuit cleaning method capable of removing the garbage.

Another object of the present invention is to provide a method for storing a predetermined liquid in a medical circuit after the medical circuit has been filled with the predetermined liquid, and there is no time restriction until the predetermined treatment is started. It is an object of the present invention to provide a medical circuit cleaning apparatus and a medical circuit cleaning method.

Another object of the present invention is to provide a medical circuit cleaning apparatus and a medical circuit cleaning method capable of performing a preparatory operation for previously filling a predetermined liquid into each of a plurality of medical circuits.

Another object of the present invention is to provide a medical circuit cleaning apparatus and a medical circuit cleaning method capable of easily and automatically cleaning a used medical circuit.

[0015]

A first means for solving the above problems is a medical circuit having a pipe for circulating a liquid, a medical circuit interposed in the medical circuit, and a medical circuit provided in the medical circuit. A pump that sucks the liquid, discharges the liquid, and forcibly circulates the liquid along the medical circuit; and a medical circuit connected to a suction-side pipe of the pump in the medical circuit, and Liquid introduction means capable of introducing the liquid into the medical circuit, and a liquid capable of discharging the liquid in the medical circuit, coupled to a pipe on the discharge side of the pump in the medical circuit. Draining means, for preventing the discharge of the liquid by the liquid discharging means when circulating the liquid in the medical circuit, and for discharging the liquid in the medical circuit, Prevents the liquid from circulating inside A discharge circulation preventing means, which is detachably interposed in the medical circuit, and circulates the liquid along the medical circuit, thereby filtering a biohazardous substance in the medical circuit. And a second means for solving the above-mentioned problem, wherein the liquid introduction means in the first means is the first liquid supply means, An introduction pipe connected to the medical circuit in the above means, a coupling means provided at an end of the introduction pipe, and detachably connectable to the coupling means for accommodating a liquid supplied to the medical circuit. A medical circuit cleaning device in the first means, comprising: a liquid container; and a third means for solving the above-mentioned problem, wherein the liquid introduction means in the first means is the first means. Medical in means A plurality of liquid introduction pipes respectively connected to the circuit, coupling means provided at the ends of these liquid introduction pipes, and detachably connectable to each of these coupling means to be supplied to the medical circuit; A medical circuit cleaning device in the first means, comprising: a liquid storage container for storing a liquid; a fourth means for solving the problem, wherein the fine particle filtration filter in the first means, The medical circuit cleaning apparatus in the first means, which has a pipe with a reduced diameter on the liquid inflow side, wherein the fifth means for solving the problem is that the liquid in the first means is The medical circuit cleaning device in the first means, which is a disinfectant or a cleaning liquid, wherein the sixth means for solving the problem is: (1) a liquid in the medical circuit cleaning apparatus in the first means. Medical by introduction means A liquid is supplied to the circuit, and the pump is driven to flow the liquid through the pipe in the first means along the medical circuit, and the circulation of the liquid in the medical circuit is performed by the discharge / circulation preventing means. And (2) stopping the supply of the liquid to the medical circuit by the liquid introducing means, and stopping the supply of the liquid to the medical circuit by the liquid introducing means. A medical circuit comprising a step of circulating the liquid in the medical circuit while preventing the discharge of the liquid, and circulating the liquid in the medical circuit by the pump. A seventh aspect of the present invention is a method for cleaning a medical circuit, wherein the liquid in the sixth means is a disinfectant or a cleaning liquid.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

(General Description) A medical circuit cleaning apparatus used in the medical circuit cleaning method according to the present invention includes a medical circuit, a pump, a liquid introduction unit, a liquid discharge unit, a discharge circulation prevention unit, and a particulate filtration unit. And a filter.

The medical circuit has a pipe for circulating a liquid.

Examples of the liquid include a liquid supplied to a living body such as blood, a dialysate for peritoneal dialysis, and a drug solution such as a drip solution.
Examples include a dialysate that is supplied to a hemodialyzer such as a dialyzer and comes into contact with blood via a hemodialysis membrane, and a disinfecting solution, a washing solution, and a physiological saline solution used for washing the medical circuit.

The piping for circulating the liquid can form a closed circuit in the medical circuit, that is, a path without a terminal.

The closed circuit can be formed in a ring shape or in a net shape such as a bridge circuit.

Examples of the pipes include hollow pipes used for tubes, pipes, cannulas, balloons, catheters, drains, and the like. , A closed circuit can be formed.

As the hollow tube, a hollow tube having elasticity, that is, an elastic hollow tube is preferably employed.

Examples of the material for the hollow tube include polyethylene, polypropylene, ethylene-vinyl acetate copolymer, vinyl chloride, ionomer resin, polyamide, polycarbonate, polyethylene terephthalate, polytetrafluoroethylene and other fluororesins, polyarylate, and the like.
Polysulfone, polyether sulfone, polymethylpentene, silicone rubber, silicone-polyurethane elastomer, block polymer of silicone and polycarbonate, polyurethane elastomer, polyester elastomer, polyamide elastomer, olefin elastomer, styrene elastomer, etc. it can.

The pump is interposed in the medical circuit, sucks the liquid in the medical circuit, discharges the liquid, and forcibly circulates the liquid along the medical circuit. be able to.

The pump is interposed in the medical circuit, sucks the liquid in the medical circuit, discharges the liquid, and forcibly circulates the liquid along the medical circuit. The configuration is not particularly limited as long as it can be performed, and examples thereof include an ironing pump, a positive displacement pump, a centrifugal pump, and a reciprocating pump.

[0026] The ironing pump may be a roller pump, for example, a suction side inlet which can be connected to one end of the pipe when it is interposed in the medical circuit in which the pipe is separated into one end and the other end. An elastic pipe portion having a discharge-side outlet connectable to the other end of the pipe; and suctioning liquid into the elastic pipe portion from the suction-side inlet, and squeezing the elastic pipe portion with a roller to form the discharge side. A pipe connection type roller pump that discharges the liquid in the elastic pipe portion from the outlet, and
When mounted on the medical circuit employing the elastic hollow tube as the pipe, the elastic hollow tube can be sandwiched, and the sandwiched elastic hollow tube is drawn into the elastic hollow tube with a roller. Pipe transfer type roller pump for transferring the liquid.

In the present invention, when the pipe-holding roller pump is mounted on the medical circuit employing the elastic hollow pipe as the pipe, the pipe-holding roller pump is provided with the elastic hollow pipe. Since the suctioned portion and the discharge of the liquid, that is, the transfer of the liquid, are performed by the held portion that is held by the pipe holding type roller pump and squeezed by the roller, the held portion of the elastic hollow tube is It is considered as a part of the above-described pipe-holding roller pump.

Therefore, in the pipe-holding roller pump mounted on the medical circuit, the held portion, which is a part of the pipe-holding roller pump, is interposed in the medical circuit. .

In the present invention, in view of the fact that the liquid can be transferred without bringing the member constituting the pump into contact with the liquid to be transferred, and that the structure is simple, the pump should be the same as the pump described above. Ironing pumps are preferred, and roller pumps are particularly preferred.

The liquid introducing means is connected to a pipe on the suction side of the pump in the medical circuit, and is capable of introducing the liquid into the medical circuit.

[0031] The liquid introduction means is an introduction pipe connected to the medical circuit, a coupling means provided at an end of the introduction pipe, and is detachably connectable to the coupling means. And a liquid storage container for storing the supplied liquid.

When the liquid is introduced into the medical circuit, the liquid introducing means does not prevent the introduction of the liquid by the liquid introducing means and circulates the liquid in the medical circuit. In such a case, it is preferable to have an introduction preventing means capable of preventing the introduction of the liquid by the liquid introducing means.

One end of the introduction pipe is connected to a branch pipe provided on a pipe on the suction side of the pump in the medical circuit.
For example, it is connected to a three-way cock.

At the other end of the introduction pipe, there is provided a connecting means capable of detachably connecting the introduction pipe and the liquid container.

The coupling means may include a needle, a connector, and the like.

As the introduction pipe, similar to the above-mentioned pipe,
For example, the hollow tube can be adopted.

The liquid storage container is not particularly limited as long as it can store the liquid to be supplied to the medical circuit. For example, a bag made of soft polyvinyl chloride, and the opening is made of an elastic member such as rubber. A sealed container such as a chemical bottle can be used.

The introduction preventing means includes, for example, a holding member including a pinch cock for holding the introduction pipe to prevent the flow of the liquid, a ball valve, a disc valve, a leaflet valve, an electromagnetic valve, and the like. Valve member.

The liquid discharge means is connected to a pipe on the discharge side of the pump in the medical circuit, and can discharge the liquid in the medical circuit.

The liquid discharging means includes a discharging pipe connected to the medical circuit.

One end of the discharge pipe is connected to a branch pipe provided in a pipe on the discharge side of the pump in the medical circuit.
For example, it is connected to a three-way cock.

The other end of the discharge pipe is arranged so that the liquid can be discharged and the discharged liquid can be stored in, for example, a drain receiver.

As the discharge pipe, similar to the pipe,
For example, the hollow tube can be adopted.

The discharge pipe is provided with discharge prevention means for preventing the liquid discharge means from discharging the liquid when circulating the liquid in the medical circuit.

Further, the liquid in the medical circuit is located at a position farther from the discharge side of the pump than the branch pipe to which the discharge pipe is connected, in the pipe on the discharge side of the pump in the medical circuit. Circulation preventing means for preventing circulation of the liquid in the medical circuit when the liquid is discharged is provided.

The discharge inhibiting means and the circulation inhibiting means are controlled by a computer or a control means such as a control relay, and when the liquid in the medical circuit is circulated, the discharge inhibiting means is controlled by the discharge inhibiting means. In a case where the discharge of the liquid by the liquid discharge unit is prevented and the liquid in the medical circuit is discharged, the circulation preventing unit can prevent the circulation of the liquid in the medical circuit.

Further, under the control of the control means such as the computer, the discharge prevention means and the circulation prevention means can perform the discharge of the liquid and the circulation of the liquid in parallel.

The discharge preventing means and the circulation preventing means include, for example, a pinch cock whose opening and closing can be controlled by control means such as a computer and which sandwiches the discharge pipe to prevent the liquid from flowing. A holding member, a valve member including a ball valve, a disc valve, a leaflet valve, a solenoid valve, and the like, the opening and closing of which can be controlled by control means such as a computer, can be given.

In the present invention, the discharge preventing means includes:
The circulation prevention means and a control means such as a computer for controlling the discharge prevention means and the circulation prevention means form a discharge circulation prevention means.

In the present invention, the control means such as a computer in the discharge circulation prevention means controls the discharge prevention means and the circulation prevention means, and controls the introduction prevention means in conjunction therewith. Preferably.

As described above, the introduction inhibiting means, the discharge inhibiting means, the circulation inhibiting means, the introduction inhibiting means,
By forming the introduction / discharge circulation prevention means with the discharge prevention means and a control means such as a computer for controlling the circulation prevention means, for example, a plurality of liquid introduction pipes are connected to the medical circuit, and these liquid introduction pipes are connected. Even when different types of liquids are introduced into the medical circuit from a plurality of liquid storage containers coupled to the respective coupling means provided at the respective ends of the tubes in a predetermined order, the predetermined liquid can be easily transferred to the medical circuit. And the introduction of the liquid, the circulation of the liquid, and the discharge of the liquid can be efficiently and automatically performed.

The fine particle filtration filter is removably interposed in the medical circuit, and circulates the liquid along the medical circuit to filter biological harmful substances in the medical circuit. it can.

The fine particle filtration filter only needs to be able to filter at least biological harmful substances such as bacteria and endotoxin. Among them, (1) high water filtration ability, particularly in a medical circuit; ) It has excellent chemical resistance to liquids introduced into the medical circuit, for example, the chemicals contained in the disinfecting solution and the cleaning liquid. (4) After disinfecting and cleaning by introducing a disinfecting solution and a cleaning solution into the medical circuit and then re-cleaning the medical circuit by introducing a physiological saline solution, for example, the residual concentration of the disinfecting solution and the cleaning solution. However, (5) when it is attached to or detached from a medical circuit, the inside of the medical circuit is temporarily exposed to outside air. (6) air bubbles can be easily removed even if air bubbles enter the medical circuit, and (7) the medical circuit For example, when blood is introduced,
A filter that satisfies the requirements of having antithrombotic properties in which a thrombus is less likely to be formed is preferred.

The fine particle filtration filter has, for example, a pore size of 0.22 μm or less, preferably 0.08 μm or less.
０．２0.22 μm and a hydrophobic material having excellent endotoxin adsorption ability, for example, a polyester polymer alloy such as polyarylate and polyethersulfone alloy (hereinafter sometimes referred to as PEPA membrane), polysulfone and the like are employed. Examples of the antithrombotic material having an antithrombotic property include:
For example, there can be mentioned a fine particle filtration filter employing 2-hydroxyethyl methacrylate-styrene block copolymer, polypropylene oxide-segmented nylon 610, or the like.

The filter employing the PEPA membrane is as follows:
While the conventional filter forms a hollow fiber having a molecular weight cut off smaller than the molecular weight of the endotoxin subunit and removes endotoxin by a molecular sieve, the pressure-flow characteristics in the filter are low, whereas the PEPA membrane adsorbs endotoxin. By doing so, endotoxin can be removed, and the filter is excellent in pressure-flow characteristics, which is preferable.

As the fine particle filtration filter, the PE
When a PA membrane is employed, it is not necessary to increase the pressure even if the amount of the liquid to be filtered through the fine particle filtration filter is increased, and the chemical resistance to sodium hypochlorite, acetic acid, and the like used in the disinfectant is excellent. In addition, for example, the composition of the electrolyte such as the components Na and Ca in the dialysate and the composition of the alkaline agent such as sodium bicarbonate are not changed.

As the fine particle filtration filter, the PE
When a PA membrane is employed, water disinfection is performed after disinfecting the medical circuit.
The residual chlorine concentration, which had exceeded
600 ppm after 1 minute, 200 ppm after 1 minute, 30 ppm
After one minute, it can be reduced to the detection limit of 0.05 ppm or less.

The form of the particulate filter may be such that the inlet port and the outlet port of the liquid in the particulate filter correspond to a coupler so that the filter can be easily attached to and detached from the medical circuit. Preferably, by doing so, the particulate filter can be easily attached to and detached from the medical circuit in a short time.

Further, it is preferable that the fine particle filter has a reduced-diameter pipe on its liquid inflow side. When the inner diameter of the pipe on the liquid inlet side of the fine particle filtration filter is formed so as to decrease in diameter toward the inlet of the fine particle filtration filter, the fine particle filtration in the pipe on the liquid inlet side is performed. Since the linear velocity of the liquid flow flowing into the filter can be increased, it is possible to prevent the collected biological harmful substances filtered by the fine particle filtration filter from flowing back and diffusing into the medical circuit.

[0060] In the present invention, in order to prevent contamination in the medical circuit due to proliferation of bacteria and increase in endotoxin in the medical circuit, the fine particle filtration provided in the medical circuit is prevented. Preferably, the filter or the entire medical circuit is cooled by cooling means. By doing so, for example, after introducing the dialysate as the liquid into the medical circuit, the dialysate can be stored in the medical circuit for a long time, so that the dialysate is introduced into each of the plurality of medical circuits in advance. Preparation work can be performed.

(Specific Description) A medical circuit cleaning apparatus and a medical circuit cleaning method according to the present invention will be described below in detail with reference to the drawings.

(Chemical Liquid Injection Circuit Cleaning Apparatus) As shown in FIG. 1, a medical liquid injection circuit cleaning apparatus 1 according to an embodiment of the medical circuit cleaning apparatus of the present invention comprises a chemical liquid injection circuit 2, a roller pump 3, It comprises a chemical solution introducing means 4, a chemical solution discharging means 5, a discharge circulation preventing means 6, a filter 7, a cooling means 8, and a bubble removing device 9.

The chemical liquid injection circuit 2 has a tube 10 made of soft vinyl chloride for circulating a chemical liquid. The tube 10 comprises the chemical liquid introduction means 4 and the roller pump 3 in the chemical liquid injection circuit 2. And the bubble removing device 9, the chemical solution discharging means 5, the discharge circulation preventing means 6, and the filter 7 are connected to form a closed loop circuit.

The roller pump 3 has an elastic pipe (not shown) having a suction-side inlet 3a and a discharge-side outlet 3b, and a liquid sucked from the suction-side inlet 3a by squeezing the elastic pipe. And a roller (not shown) for discharging from the outlet 3b. The suction side tube 10a and the suction side inlet 3a of the tube 10 are connected to each other, and the discharge side tube 10b and the discharge side outlet 3b of the tube 10 are connected. And are connected.

The chemical solution introducing means 4 includes an introduction tube 12 connected to a three-way cock 11 provided on the suction side tube 10 a, a needle connector 13 provided at an end of the introduction tube 12, A drug solution bag 14 that is detachably connectable to the connector 13 and stores a drug solution to be supplied to the drug solution injection circuit 2, and a pinch cock 15 that can sandwich the introduction tube 12 and close the introduction tube 12. Be prepared.

The chemical solution discharging means 5 includes a discharge tube 17 connected to a three-way cock 16 provided on the discharge side tube 10 b, a discharge port 18 provided at an end of the discharge tube 17, and a discharge port 18. And a drain receiver (not shown) for receiving the chemical discharged from the apparatus.

The discharge tube 17 is provided with a solenoid valve 19 which is a discharge preventing means for preventing the discharge of the chemical solution by the chemical liquid discharging means 5.

In the discharge side tube 10 b, at a position farther from the discharge side outlet 3 b than the three-way cock 16, when discharging the chemical in the chemical injection circuit 2, the chemical in the chemical injection circuit 2 is discharged. An electromagnetic valve 20, which is a circulation preventing means capable of preventing the circulation of the electromagnetic wave, is provided.

The solenoid valve 19 and the solenoid valve 20 are controlled by a computer 21 and the
When circulating the chemical solution in the inside, the electromagnetic valve 19 closes the discharge tube 17, and when discharging the chemical solution in the solution injection circuit 2, the electromagnetic valve 20 is connected to the discharge side tube. 10b can be closed. The solenoid valve 1 is controlled by the computer 21.
9 and the electromagnetic valve 20 can discharge the chemical solution while circulating the chemical solution in the chemical solution injection circuit 2 when the introduction of the chemical solution by the chemical solution introduction unit 4 is prevented. When a chemical is introduced by the introduction means 4, the chemical can be discharged while introducing the chemical into the chemical injection circuit 2.

In the present invention, the discharge circulation preventing means 6 is formed by the solenoid valve 19, the solenoid valve 20, and the computer 21 for controlling the solenoid valve 19 and the solenoid valve 20.

The filter 7 has a pore size of 0.22
The filter 7 has an inflow port 7a and an outflow port 7b of the chemical solution corresponding to a coupler so that the filter 7 can be easily attached to and detached from the chemical solution injection circuit 2. The inflow port 7a and the inflow tube 10c of the tube are connected by a coupler, and the outflow port 7b and the outflow tube 10d of the tube are connected by a coupler.

The inflow side tube 10c is connected to the connector 22.
The outlet side tube 10d is detachably connected to the suction side tube 10a via a connector 23.

The inside diameter of the inflow tube 10c on the connector 22 side is 4.7 mm, and the inside diameter of the inflow tube 10c on the inflow port 7a side is 3.
4 mm, the inflow side tube 10c
Is formed such that the inner diameter thereof decreases toward the inflow port 7a of the filter 7.

The inner diameter of the outlet tube 10d is 4.7 mm.

The cooling means 8 is connected to the inflow tube 1.
A cooling device capable of cooling the chemical solution is provided in a part in Oc, in the filter 7, and in a part of the outflow tube 10d.

(Chemical liquid injection circuit cleaning method) Next, a chemical liquid injection circuit cleaning method in the case of injecting a chemical liquid into a living body using the chemical liquid injection circuit cleaning apparatus 1 will be described.

In the method for cleaning a chemical liquid injection circuit, the chemical liquid is supplied to the chemical liquid injection circuit 2 by the chemical liquid introduction means 4 in the chemical liquid injection circuit cleaning apparatus 1 and the roller pump 3 is driven to drive the chemical liquid injection circuit 2. Preparing the chemical solution to flow through the tube 10 along the flow path, and discharging the chemical solution in the chemical solution injection circuit 2 while preventing the circulation of the chemical solution in the chemical solution injection circuit 2 by the discharge circulation prevention means 6; Further, the supply of the chemical liquid to the chemical liquid injection circuit 2 by the chemical liquid introduction means 4 is stopped, and the discharge of the chemical liquid in the chemical liquid injection circuit 2 is prevented by the discharge / circulation prevention means 6 so that the inside of the liquid chemical injection circuit 2 is stopped. And a circulation step of circulating the chemical solution in the chemical solution injection circuit 2 by the roller pump 3.

-Preparation Step- In the preparation step, the chemical liquid injection circuit cleaning device 1 is used.
In this case, the chemical solution is caused to flow through the chemical solution injection circuit 2 to remove bubbles in the chemical solution injection circuit 2 and to clean the inside of the chemical solution injection circuit 2 with the chemical solution even when unused.

First, as a first preparation step, it is confirmed that the pinch cock 15 in the chemical liquid introducing means 4 is in an open state, and the electromagnetic valve 19 in the chemical liquid discharging means 5 is opened according to an instruction from the computer 21. State and the electromagnetic valve 2 in the discharge circulation preventing means 6
0 is closed.

When the roller pump 3 is driven, the drug solution in the drug solution bag 14 flows through the introduction tube 12, and the suction side tube 10 in the three-way cock 11.
a, and the chemical solution is introduced into the elastic tube from the suction side inlet 3a of the roller pump 3, and the roller of the roller pump 3 squeezes the elastic tube to form the discharge side outlet 3b. From the discharge side tube 10b.

The bubble removal device 9 is interposed in the discharge side tube 10b, and the chemical solution from which bubbles have been removed by the bubble removal device 9 flows through the discharge tube 17 from the three-way cock 16 to the discharge tube 17. It is discharged from the discharge port 18.

Thus, the cleaning from the three-way cock 11 to the three-way cock 16 in the chemical liquid injection circuit 2 can be performed.

Next, as a second preparation step, the pinch cock 15 in the chemical liquid introducing means 4 is maintained in an open state, and the electromagnetic valve 19 in the chemical liquid discharging means 5 is closed in accordance with an instruction from the computer 21. And, the electromagnetic valve 20 in the discharge circulation preventing means 6 is set to the open state.

The chemical solution from which bubbles have been removed by the bubble removing device 9 is introduced from the discharge side tube 10b into the inflow side tube 10c.
a flows into the filter 7 and flows out from the outlet port 7b into the outlet tube 10d.

The outflow side tube 10d is connected to the connector 2
3 is connected to the suction side tube 10a, so that the chemical solution flowing into the outflow side tube 10d reaches the bubble removing device 9 again, thereby removing bubbles in the chemical solution injection circuit 2. can do.

Further, as a third preparation step, the pinch cock 15 in the chemical liquid introducing means 4 is kept open, the electromagnetic valve 19 in the chemical liquid discharging means 5 is opened according to an instruction from the computer 21, and The electromagnetic valve 20 in the discharge circulation prevention means 6 is closed.

The chemical liquid that has reached the bubble removing device 9 again is discharged from the discharge port 18 through the discharge tube 17 from the three-way cock 16 along with contamination etc. in the chemical liquid injection circuit 2. You.

By alternately repeating the second preparation step and the third preparation step, the chemical injection circuit 2 can be cleaned.

-Circulation Step- In the circulation step, the supply of the chemical solution to the chemical solution injection circuit 2 by the chemical solution introduction means 4 is stopped, and the discharge of the chemical solution in the chemical solution injection circuit 2 by the discharge / circulation prevention means 6. The chemical solution is circulated in the chemical solution injection circuit 2 while preventing discharge, and the filter solution is filtered by the filter 7.

First, the pinch cock 15 in the chemical solution introducing means 4 is closed, and the computer 21 is closed.
The electromagnetic valve 19 of the chemical liquid discharging means 5 is closed and the electromagnetic valve 20 of the discharge circulation preventing means 6 is opened according to the instruction of (1).

When the roller pump 3 is driven, the drug solution circulates in the drug solution injection circuit 2, and bacteria and endotoxin in the drug solution injection circuit 2 are filtered by the filter 7.

The inflow side tube 10c connected to the inflow port 7a of the filter 7 is moved toward the inflow port 7a of the filter 7.
Since the inner diameter is formed to be reduced, it is possible to prevent bacteria, endotoxin, and the like filtered by the filter 7 from flowing back into the inflow tube 10c and diffusing into the drug solution injection circuit 2. Can be.

Further, by activating the cooling means while circulating the drug solution in the drug solution injection circuit 2, it is possible to prevent the growth of bacteria and endotoxin in the drug solution injection circuit 2, etc. The drug solution can be stored in the drug solution injection circuit 2 for a long time.

Therefore, a plurality of the chemical liquid injection circuit cleaning devices 1
In the case of adopting the above, the preparatory work for filling the predetermined liquid in the chemical liquid injection circuit 2 in each of the chemical liquid injection circuit cleaning devices 1 can be efficiently performed.

As shown in FIG. 2, the chemical liquid injection circuit cleaning apparatus 1 includes the filter 7 and the inflow side tube 10.
c, and the outflow side tube 10 d is connected to the connector 22.
And detached from the connector 23,
Is closed by a blind plug (not shown), and an infusion tube 24 is connected to the connector 22, so that the infusion tube 24 is connected to the predetermined injection site 25 from the solution bag 14 through the infusion circuit 2 and the infusion tube 24. Medication can be injected.

In this case, it is confirmed that the pinch cock 15 in the chemical liquid introducing means 4 is in an open state, and the chemical liquid discharging means 5 is instructed by the computer 21.
The electromagnetic valve 19 in the closed state, and the electromagnetic valve 20 in the discharge circulation preventing means 6 in the open state,
By driving the roller pump 3, the liquid medicine in the liquid medicine bag 14 can be injected into the injection site 25 through the liquid injection circuit 2 and the injection tube 24.

(Blood Circuit Cleaning Apparatus) As shown in FIG.
A blood circuit cleaning device 26, which is an embodiment of the medical circuit cleaning device of the present invention, includes a blood circuit 27 and a roller pump 28.
A disinfecting solution introducing means 29, a cleaning liquid introducing means 30, a physiological saline introducing means 31, and a liquid for discharging a liquid such as blood, disinfecting liquid, cleaning liquid, and physiological saline introduced into the blood circuit 27. Discharge means 32 and introduction / discharge circulation preventing means 33
, A filter 34, a cooling means 35, a dialyzer 36, and an air bubble removing device 37.

The blood circuit 27 has a tube 38 made of soft vinyl chloride for circulating blood. The tube 38 is provided in the blood circuit 27 with the physiological saline introducing means 31 and the washing liquid introducing means. 30, the disinfecting solution introducing means 29, the roller pump 28, the dialyzer 36, the air bubble removing device 37, the liquid discharging means 32, the introducing / discharging circulation preventing means 33, and the filter 34. They are connected to form a closed loop circuit.

The roller pump 28 is connected to the suction side inlet 28.
a and an outlet tube 28b (not shown)
And a roller (not shown) for discharging the liquid sucked from the suction-side inlet 28a through the elastic tube and discharged from the discharge-side outlet 28b, and the suction-side tube 38a in the tube 38 and the suction And the discharge side tube 38 in the tube 38.
b and the discharge-side outlet 28b are connected to each other.

The disinfecting solution introduction means 29 includes an introduction tube 29b connected to a three-way cock 29a provided on the suction side tube 38a, a needle connector 29c provided at an end of the introduction tube 29b, and the needle A disinfecting solution bag 29d that is detachably connectable to the mold connector 29c and contains a disinfecting solution supplied to the blood circuit 27, and an introduction preventing unit that can prevent the disinfecting solution introduction unit 29 from introducing the disinfecting solution. And an electromagnetic valve 29e.

The washing liquid introducing means 30 includes an introducing tube 30b connected to a three-way cock 30a provided on the suction side tube 38a, a needle connector 30c provided at an end of the introducing tube 30b, A cleaning liquid bag 30d detachably connectable to the connector 30c and containing a cleaning liquid to be supplied to the blood circuit 27, and an electromagnetic valve serving as an introduction preventing means capable of preventing introduction of the cleaning liquid by the disinfecting liquid introducing means 30; 30e.

The physiological saline introducing means 31 includes an introduction tube 31b connected to a three-way cock 31a provided on the suction side tube 38a, and an introduction tube 31b.
A needle connector 31c provided at an end of the blood circuit 27 and the needle circuit 31c is detachably connectable to the needle connector 31c.
Saline bag 3 containing saline supplied to
1d, and an electromagnetic valve 31e, which is an introduction preventing means capable of preventing the introduction of the physiological saline by the physiological saline introducing means 31.

The liquid discharge means 32 includes a discharge tube 32b connected to a three-way cock 32a provided on the discharge side tube 38b, a discharge port 32c provided at an end of the discharge tube 32b, and a discharge port 32c. And a drain receiver (not shown) for receiving the chemical discharged from the apparatus.

The discharge tube 32b is provided with an electromagnetic valve 32d which is a discharge preventing means for preventing the liquid discharging means 32 from discharging the liquid.

In the discharge tube 38b, at a position farther from the discharge side outlet 28b than the three-way cock 32a, the circulation of the liquid in the blood circuit 27 when the liquid in the blood circuit 27 is discharged. Is provided with a solenoid valve 33a, which is a circulation preventing means capable of preventing the occurrence of the pressure.

The solenoid valve 29e, the solenoid valve 30e, the solenoid valve 31e, the solenoid valve 32d, and the solenoid valve 33
a is controlled by the computer 39, and when the liquid in the blood circuit 27 is circulated, the electromagnetic valve 3
When 2d closes the discharge tube 32b and discharges the liquid in the blood circuit 27, the solenoid valve 3
3a can close the discharge side tube 38b.

Under the control of the computer 39, the solenoid valve 32d and the solenoid valve 33a are turned into the solenoid valve 29e, the solenoid valve 30e, and the solenoid valve 31e.
When the introduction of the liquid is prevented by any of the above,
The liquid can be discharged while circulating the liquid in the blood circuit 27, and the electromagnetic valve 29e, the electromagnetic valve 3
In the case where the liquid is introduced by any one of 0e and the electromagnetic valve 31e, the liquid can be discharged while introducing the liquid into the blood circuit 27.

In the present invention, the solenoid valve 29e,
The solenoid valve 30e, the solenoid valve 31e, the solenoid valve 32d, the solenoid valve 33a, the solenoid valve 29e, the solenoid valve 30e, the solenoid valve 31e, the solenoid valve 32d
The computer 39 for controlling the electromagnetic valve 33a forms the introduction / discharge circulation preventing means 33.

As the filter 34, the same filter as that used in the chemical liquid injection circuit cleaning device 1 can be adopted. The liquid inlet port 34a and the liquid outlet port 34b of the filter 34 correspond to a coupler. The inflow port 34a and the inflow tube 38c of the tube are connected by a coupler, and the outflow port 34b and the outflow tube 38d of the tube are connected by a coupler.

As the cooling means 35, the same cooling means as used in the chemical liquid injection circuit cleaning device 1 can be employed.

(Blood Circuit Cleaning Method) Next, a blood circuit cleaning method when blood is circulated extracorporeally using the blood circuit 27 in the blood circuit cleaning device 26 will be described.

In the blood circuit cleaning method, a predetermined liquid is supplied to the blood circuit 27 by the disinfecting liquid introducing means 29, the cleaning liquid introducing means 30, and the physiological saline introducing means 31 in the blood circuit cleaning apparatus 26. The roller pump 28 is driven to flow the predetermined liquid through the tube 38 along the blood circuit 27, and the introduction / discharge circulation preventing means 33 prevents the predetermined liquid from circulating in the blood circuit 27. A preparatory step for draining a predetermined liquid from the blood circuit 27, and the disinfectant introducing means 2
9. Washing liquid introduction means 30, and physiological saline introduction means 31
The supply of the predetermined liquid to the blood circuit 27 is stopped, and the discharge of the predetermined liquid in the blood circuit 27 is prevented by the introduction / discharge circulation preventing means 33 while the predetermined liquid in the blood circuit 27 is stopped. Make the liquid circulation possible,
A circulation step of circulating the predetermined liquid in the blood circuit 27 by the roller pump 28;

-Preparation Step- In the preparation step and the circulation step, a predetermined liquid is circulated through the blood circuit 27 in the blood circuit cleaning device 26 to remove bubbles in the blood circuit 27, Even if unused, the inside of the blood circuit 27 is washed with the predetermined liquid.

Here, a case where the used blood circuit 27 is washed and reused will be described.

First, as a first step of preparing a disinfecting solution, after the blood remaining in the blood circuit 27 is discharged by an appropriate method, the electromagnetic valve 29e and the electromagnetic valve 32d are opened according to an instruction from the computer 39. The solenoid valve 30e, the solenoid valve 31e, and the solenoid valve 33a are closed.

When the roller pump 28 is driven, the disinfecting solution in the disinfecting solution bag 29d flows through the introduction tube 29b and is introduced into the suction side tube 38a in the three-way cock 29a. Is the suction side inlet 28 of the roller pump 28
a into the elastic tube, the roller pump 28
Is discharged from the discharge-side outlet 28b into the discharge-side tube 38b by squeezing the elastic tube.

The discharge side tube 38b is provided with the dialyzer 36 and the air bubble removing device 37, which disinfects the dialyzer 36 and removes the bubbles by the air bubble removing device 37. The three-way cock 32a flows through the discharge tube 32b and is discharged from the discharge port 32c.

Next, as a second step of preparing the disinfecting solution, the electromagnetic valve 29e and the electromagnetic valve 33a are opened according to an instruction from the computer 39, and the electromagnetic valves 30e, 31e and 32d are opened. Make it closed.

The disinfecting solution from which bubbles have been removed by the bubble removing device 37 is introduced from the discharge tube 38b to the inflow tube 38c via the connector 40.
Further, the filter 34 is connected to the inflow port 34a.
And flows out from the outlet port 34b into the outlet tube 38d.

The outflow side tube 38d is connected to the connector 4
1, the antiseptic solution flowing into the outflow side tube 38d reaches the air bubble removing device 37 again, thereby filling the inside of the blood circuit 27 with sterilization. can do.

Further, as a third step of preparing the disinfecting solution, the electromagnetic valve 29e and the electromagnetic valve 32d are opened according to an instruction from the computer 39, and the electromagnetic valve 30e,
The electromagnetic valve 31e and the electromagnetic valve 33a are closed.

The disinfecting solution that has reached the bubble removing device 37 again flows through the discharge tube 32b from the three-way cock 32a through the discharge tube 32b with the residual blood, contaminants, and the like in the blood circuit 27, and from the discharge port 32c. Is discharged.

By alternately repeating the disinfectant preparation second step and the disinfectant preparation third step, the blood circuit 2 is prepared.
7 disinfections can be performed.

Following the first to third steps of the preparation of the disinfecting solution, the disinfecting solution remaining in the blood circuit 27 is discharged by an appropriate method, and then the cleaning solution is prepared in the same manner as the first to third steps of the preparation of the disinfecting solution. The first to third steps of preparation and the first to third steps of preparation of physiological saline are performed.

-Circulation Step- After the physiological saline preparation first to third steps are sufficiently performed,
When the second step of preparing the physiological saline is completed, the blood circuit 27 is filled with the physiological saline.

In the circulation step, the solenoid valve 33a is opened according to instructions from the computer 39, and the solenoid valve 29e, the solenoid valve 30e, the solenoid valve 31e, and the solenoid valve 32d are closed.

The supply of the physiological saline to the blood circuit 27 is stopped, and the discharge of the physiological saline in the blood circuit 27 is prevented by the introduction / discharge circulation preventing means 33. The saline solution is circulated, and the saline solution is filtered by the filter 34.

When the roller pump 28 is driven, the physiological saline circulates in the blood circuit 27, and bacteria and endotoxin in the blood circuit 27 are filtered by the filter 34.

The inside diameter of the inflow side tube 38c is formed so that the inside diameter decreases toward the inflow port 34a of the filter 34.
The linear velocity of the liquid flow flowing into the inflow port 34a of the filter 34 can be increased, and the bacteria, endotoxin, and the like filtered by the filter 34 flow back into the inflow side tube 38c and flow through the blood circuit 27. Can be prevented.

Further, by operating the cooling means while circulating the physiological saline in the blood circuit 27, it is possible to prevent the growth of bacteria and the increase of endotoxin in the blood circuit 27, etc. The physiological saline can be stored in the blood circuit 27 for a long time.

Therefore, when a plurality of the blood circuit cleaning devices 26 are employed, a preparation operation for previously filling the blood circuit 27 with the physiological saline in each of the blood circuit cleaning devices 26 can be efficiently performed.

As shown in FIG. 4, the blood circuit cleaning device 26 includes the filter 34 and the inflow side tube 38.
c, and the outflow side tube 38 d is connected to the connector 40.
And detached from the connector 41,
By connecting the infusion catheter 42 and the infusion catheter 43 to the connector 41, the physiological saline can be infused into a predetermined infusion site 44 and hemodialysis treatment can be started.

In this case, a dialysate circulation circuit (not shown) of another system for circulating the dialysate is connected to the dialyzer 36, and the dialyser 36 is discharged from the discharge catheter 43 to the blood circuit 27, The blood circulating in the blood circuit 27 and the dialysate circulating in the separate dialysate circulation circuit can come into contact via a dialysis membrane (not shown) in the dialyzer 36.

(Hemodialysis Circuit Cleaning Apparatus) As shown in FIG. 5, a hemodialysis circuit cleaning apparatus 45, which is an embodiment of the medical circuit cleaning apparatus of the present invention, comprises a blood circuit cleaning apparatus 26 and a dialysate circuit cleaning apparatus. 46.

The blood circuit cleaning device 26 includes a blood circuit 27, a roller pump 28, a disinfecting liquid introducing means 29, and a cleaning liquid introducing means 30 as described above with reference to FIG.
A physiological saline introducing means 31, a liquid discharging means 32 for discharging a liquid such as a blood, a disinfectant, a washing liquid, and a physiological saline introduced into the blood circuit 27, and an introduction / discharge circulation preventing means 33; It comprises a filter 34, a cooling means 35, a dialyzer 36, and a bubble removing device 37.

The blood circuit 27 has a tube 38 made of soft vinyl chloride for circulating blood. The tube 38 is provided in the blood circuit 27 with the physiological saline introducing means 31 and the washing liquid introducing means. 30, the disinfecting solution introducing means 29, the roller pump 28, the dialyzer 36, the air bubble removing device 37, the liquid discharging means 32, the introducing / discharging circulation preventing means 33, and the filter 34. They are connected to form a closed loop circuit.

The roller pump 28 is connected to the suction side inlet 28.
a and an outlet tube 28b (not shown)
And a roller (not shown) for discharging the liquid sucked from the suction-side inlet 28a through the elastic tube and discharged from the discharge-side outlet 28b, and the suction-side tube 38a in the tube 38 and the suction And the discharge side tube 38 in the tube 38.
b and the discharge-side outlet 28b are connected to each other.

The dialyzer 36 has a blood inlet 36.
a, a blood outlet 36b, a dialysate inlet 36c, a dialysate outlet 36d, and a hollow fiber membrane (not shown) as a hemodialysis membrane. The blood circuit 27 is connected to the blood inlet 36a and the blood outlet 36b between the roller pump 28 and the bubble removing device 37 in the discharge side tube 38b.

The dialysate circuit cleaning device 46 comprises a dialysate circuit 47, a roller pump 48, and a dialysate introduction means 49.
Dialysate discharge means 50 and introduction / discharge circulation prevention means 51
, A filter 52, a cooling means 53, and an air bubble removing device 54.

The dialysate circuit 47 has a tube 55 made of soft vinyl chloride for circulating the dialysate. The tube 55 is connected to the dialysate introduction means 49 and the roller in the dialysate circuit 47. The pump 48, the bubble removing device 54, the dialysate discharge means 50, the introduction / discharge circulation preventing means 51, and the filter 52 are connected to form a closed loop circuit.

The roller pump 48 has a suction side inlet 48.
a and an elastic tube having a discharge side outlet 48b (not shown)
And a roller (not shown) for discharging the liquid sucked from the suction-side inlet 48a through the elastic tube through the discharge-side outlet 48b, and the suction-side tube 55a in the tube 55 and the suction-side tube 55a. Side inlet 48a and the discharge side tube 55 of the tube 55.
b and the discharge-side outlet 48b are connected to each other.

The dialyzer 36 is connected to the blood circuit 4.
7, the blood circuit 47 is connected to the dialysate inlet 36c and the dialysate outlet 36d between the roller pump 48 and the bubble removing device 54 in the discharge side tube 55b. It becomes.

The dialysate introduction means 49 is provided with a three-way cock 4
9a, an introduction tube 49b, and a needle connector 49c.
, A dialysate bag 49d, and a solenoid valve 49e.

The dialysate discharging means 50 is a three-way cock 5
0a, a discharge tube 50b, a discharge port 50c, a solenoid valve 50d serving as a discharge prevention means, and a liquid discharge receiver (not shown).
And

When the dialysate in the dialysate circuit 47 is discharged to a position farther from the discharge side outlet 48b than the three-way cock 50a in the discharge side tube 55b, An electromagnetic valve 51a, which is a circulation inhibiting means capable of inhibiting the circulation of the dialysate, is provided.

The solenoid valve 49e, the solenoid valve 50d, and the solenoid valve 51a are controlled by a computer 56.

In the present invention, the solenoid valve 49e,
The electromagnetic valve 50d, the electromagnetic valve 51a, the electromagnetic valve 49e, the electromagnetic valve 50d, and the computer 56 for controlling the electromagnetic valve 51a form the introduction / discharge circulation preventing means 51.

As the filter 52, the same filter as that used in the chemical liquid injection circuit cleaning device 1 can be used.

As the cooling means 53, the same cooling means as used in the chemical liquid injection circuit cleaning device 1 can be employed.

(Method for Cleaning Hemodialysis Circuit) Next, a method for cleaning the hemodialysis circuit when performing hemodialysis treatment using the blood circuit 27 and the dialysate circuit 47 in the hemodialysis circuit cleaning device 45 will be described. .

As described above with reference to FIG. 3, the blood circuit cleaning device 26 in the hemodialysis circuit cleaning device 45 is inserted into the blood circuit 27 at the time when the physiological saline preparation second step is completed. It is filled with saline.

In the blood circuit 27, as shown in FIG.
c and the outflow side tube 38d are connected to the connector 4
0 and the connector 41, and by injecting the saline into a predetermined injection site 44 by connecting the infusion catheter 42 and the infusion catheter 43 to the connector 40 and the connector 41, Hemodialysis treatment in which blood discharged from 43 is circulated in the blood circuit 27 outside the body can be started.

In this case, the blood flowing from the blood inlet 36a in the dialyzer 36 passes through the hollow fiber membrane and flows out from the blood outlet 36b.

On the other hand, in the dialysate circuit 47, as shown in FIG. 6, the filter 52, the inflow tube 55c, and the outflow tube 55d are detached from the connectors 57 and 58, and the connectors 57 and 58 are removed. The connector 58 is connected by a connecting tube 55e, and the dialysate flowing from the dialysate inlet 36c in the dialyzer 36 comes into contact with the blood through the hollow fiber membrane and flows out from the dialysate outlet 36d. I do.

[0155]

The medical circuit cleaning apparatus and the medical circuit cleaning method of the present invention remove solutes to be removed from blood for the purpose of treating, for example, chronic renal failure, hepatic coma, drug poisoning, and autoimmune diseases. Extracorporeal circulation circuit in the blood purification method, such as a hemodialysis circuit, a hemodiafiltration circuit, a hemofiltration circuit, a plasma separation circuit, a plasma component separation circuit and a peritoneal dialysis circuit, or a living body when injecting a drug solution into a living body When a predetermined liquid is filled in a medical circuit such as an injection line and an injection circuit that connects a medical fluid supply source to a medical fluid supply source, a fine particle filtration filter capable of removing biological harmful substances such as bacteria and endotoxin in the medical circuit. And by circulating a predetermined liquid filled in the medical circuit in the medical circuit, (1) the inside of the medical circuit is easily made. It can be washed dynamically, (2) it can remove harmful substances such as bacteria and endotoxin in the medical circuit, and (3) after filling the medical circuit with a predetermined liquid, Even if left untouched, the biological harmful substance in the medical circuit can be removed. (4) After filling the medical circuit with a predetermined liquid, the predetermined liquid can be stored in the medical circuit. Moreover, the biological harmful substance in the medical circuit can be automatically removed. (5) After filling the medical circuit with the predetermined liquid, the predetermined liquid can be stored in the medical circuit. (6) Preparatory work for filling each of a plurality of medical circuits with a predetermined liquid in advance can be performed, and (7) A used medical circuit can be easily prepared. Can be automatically washed,
(8) Depending on the medical circuit to be cleaned, a plurality of types of liquids such as a desired disinfecting liquid and a cleaning liquid can be used.

Further, the inside diameter of the inflow-side pipe connected to the inlet port of the particulate filter interposed in the medical circuit is formed so as to decrease in diameter toward the inlet port of the particulate filter. Thereby, it is possible to prevent bacteria, endotoxin, and the like filtered by the fine particle filtration filter from flowing back into the inflow-side pipe and diffusing into the medical circuit.

Further, the whole medical circuit, or
By cooling the particulate filter interposed in the medical circuit by cooling means, it is possible to prevent the growth of bacteria and endotoxin in the medical circuit, etc. Can be stored for a long time.

Therefore, when a plurality of the medical circuit cleaning devices are employed, the preparatory work for previously filling a predetermined liquid into the medical circuit in each of the medical circuit cleaning devices can be efficiently performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of a medical circuit cleaning apparatus and a medical circuit cleaning method of the present invention.

FIG. 2 is a schematic view of a treatment method employing an embodiment of the medical circuit cleaning apparatus of the present invention.

FIG. 3 is a schematic view showing another embodiment of the medical circuit cleaning apparatus and the medical circuit cleaning method of the present invention.

FIG. 4 is a schematic view of a treatment method employing another embodiment of the medical circuit cleaning apparatus of the present invention.

FIG. 5 is a schematic view showing another embodiment of the medical circuit cleaning apparatus and the medical circuit cleaning method of the present invention.

FIG. 6 is a schematic diagram of a treatment method employing another embodiment of the medical circuit cleaning apparatus of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Chemical liquid injection circuit cleaning device, 2 ... Chemical liquid injection circuit, 3 ... Roller pump, 3a ... Suction side inlet, 3
b: outlet on the discharge side, 4 ... means for introducing a chemical solution, 5 ...
Chemical liquid discharging means, 6 ... discharge circulation preventing means, 7 ... filter, 8 ... cooling means, 9 ... bubble removing device,
10: tube, 10a: suction side tube, 1
0b: discharge side tube, 11: three-way cock, 1
2 ... Introduction tube, 13 ... Needle connector, 14
... Chemical liquid bag, 15 ... Pinch cock, 16 ...
・ Three-way cock, 17 ・ ・ ・ Discharge tube, 18 ・ ・ ・ Discharge port, 19 ・ ・ ・ Solenoid valve, 20 ・ ・ ・ Solenoid valve, 21 ・ ・
・ Computer, 22 ・ ・ ・ Connector, 23 ・ ・ ・ Connector, 24 ・ ・ ・ Injection Tube, 25 ・ ・ ・ Injection Site, 26 ・ ・ ・ Blood Circuit Cleaning Device, 27 ・ ・ ・ Blood Circuit, 28 ・ ・ ・Roller pump, 28a: suction side inlet, 28b: discharge side outlet, 29: disinfectant introduction means, 29a: three-way cock, 29b: introduction tube, 29c: needle connector, 29d: disinfectant bag, 29e: solenoid valve, 30: cleaning liquid introduction means, 30a: three-way cock, 30b: introduction tube, 30c: needle connector, 30d: cleaning liquid Bag, 30e: solenoid valve, 31: saline introduction means, 31a: three-way cock, 31b: introduction tube, 31c: needle connector, 31d: saline bag, 31e ... Solenoid valves, 32 ... liquid discharge means, 32a ... three-way stopcock, 32 b ... exhaust tube, 32c ... outlet, 32d ... solenoid valve, 33 -
..Intake / discharge circulation preventing means, 33a... Solenoid valve, 34
... Filter, 34a ... Inlet port, 34b
... Outlet port, 35 ... Cooling means, 36 ...
Dialyzer, 36a ... blood inlet, 36b ...
Blood outlet, 36c ... dialysate inlet, 36d ...
Dialysate outlet, 37 ... bubble removing device, 38 ... tube, 38a ... suction side tube, 38b ... discharge side tube, 38c ... inflow side tube, 38d
..Outflow side tubes, 39, computers, 40
··· Connector, 41 ··· Connector, ··································· Injection catheter, 44 ········· Injected site, 45 ············· Hemodialysis circuit cleaning device, ···
Dialysate circuit washing device, 47 ... dialysate circuit, 48 ...
・ Roller pump, 48a: suction side inlet, 48b
· Outlet on the discharge side, 49 ··· dialysate introduction means, 49a ···
・ Three-way cock, 49b ・ ・ ・ Introduction tube, 49c ・ ・
・ Needle connector, 49d ・ ・ ・ Dialysis fluid bag, 49e ・
..Electromagnetic valves, 50... Dialysate discharge means, 50a.
Three-way cock, 50b ... discharge tube, 50c ...
Discharge port, 50d: electromagnetic valve, 51: introduction / discharge circulation preventing means, 51a: electromagnetic valve, 52: filter, 53: cooling means, 54: bubble removing device, 5
5 ... tube, 55a ... suction side tube, 55
b ... discharge side tube, 55c ... inflow side tube, 55d ... outflow side tube, 55e ... connection tube, 56 ... computer, 57 ... connector, 58 ... connector.

Claims (7)

[Claims] A medical circuit having a pipe for circulating a liquid, a medical device interposed in the medical circuit, aspirating the liquid in the medical circuit, and discharging the liquid to forcibly perform the medical treatment. A pump for circulating the liquid along a circuit for medical use, and a liquid introduction unit coupled to a suction-side pipe of the pump in the medical circuit, and capable of introducing the liquid into the medical circuit, In the medical circuit, a liquid discharge unit coupled to a pipe on the discharge side of the pump and capable of discharging the liquid in the medical circuit, and when circulating the liquid in the medical circuit, Means for preventing discharge of the liquid by the liquid discharge means, and, when discharging the liquid in the medical circuit, discharge circulation preventing means capable of preventing circulation of the liquid in the medical circuit; The medical circuit A particulate filtration filter that is detachably interposed and that can filter a biological harmful substance in the medical circuit by circulating the liquid along the medical circuit. Medical circuit cleaning device. 2. The liquid introducing means according to claim 1, comprising: an introducing pipe coupled to the medical circuit according to claim 1;
2. The medical device according to claim 1, further comprising a connecting means provided at an end of the introduction tube, and a liquid container which is detachably connectable to the connecting means and stores a liquid supplied to the medical circuit.
3. The medical circuit cleaning device according to claim 1. 3. The liquid introduction means according to claim 1 is provided at a plurality of liquid introduction pipes respectively connected to the medical circuit according to claim 1, and at the ends of each of these liquid introduction pipes. 2. The medical circuit cleaning device according to claim 1, further comprising: a connecting means, and a liquid container which is detachably connectable to each of these connecting means and stores a liquid supplied to the medical circuit. . 4. The medical circuit cleaning device according to claim 1, wherein the particulate filter according to claim 1 has a reduced-diameter pipe on a liquid inflow side thereof. 5. The medical circuit cleaning apparatus according to claim 1, wherein the liquid according to claim 1 is a disinfecting liquid or a cleaning liquid. 6. The medical circuit cleaning apparatus according to claim 1, wherein the liquid is supplied to the medical circuit by a liquid introducing means, and the pump is driven to drive the medical circuit along the medical circuit. Flowing the liquid in the pipe according to the step of discharging the liquid in the medical circuit while preventing the circulation of the liquid in the medical circuit by the discharge circulation prevention means,
And (2) stopping the supply of the liquid to the medical circuit by the liquid introduction unit, and preventing the discharge of the liquid in the medical circuit by the discharge circulation prevention unit by the discharge circulation prevention unit. A method for cleaning a medical circuit, comprising the steps of: circulating a liquid, and circulating the liquid in the medical circuit by the pump. 7. The method for cleaning a medical circuit according to claim 6, wherein the liquid according to claim 6 is a disinfectant or a cleaning liquid.