TW201707734A - Liquid transmittion kit and using method thereof - Google Patents

Abstract

Provided is an infusion set comprising first drip infusion equipment and second drip infusion equipment. The first drip infusion equipment comprises a first upstream tube, a first downstream tube, and a first three-way stopcock that can switch only between a first position at which the first upstream tube communicates with the first downstream tube and a second position at which the first downstream tube communicates with a first connecting opening. The second drip infusion equipment comprises a second upstream tube, a second downstream tube, and a second three-way stopcock that can switch only between a first position at which the second upstream tube communicates with the second downstream tube and a second position at which the second downstream tube communicates with a second connecting opening. The end opposite to the second three-way stopcock on the second downstream tube is configured to be able to connect to or is connected to the first connecting opening so that the first connecting opening communicates with the second downstream tube.

Description

Infusion set and its use method

The present invention relates to an infusion set that can be applied to inject a drug solution side into a main infusion channel and a method of using the same.

In the case of a separate delivery of the drug solution, the puncture needle must be left on the patient again. Therefore, it is often the case that the chemical liquid side is injected into the main infusion path that has been set. In addition, the term "side note" refers to the injection of another chemical solution into the middle of the main infusion path.

Further, when a toxic chemical liquid such as an anticancer agent is administered, there is a possibility that the chemical liquid leaks to the outside. In Patent Document 1, an infusion set suitable for side-injecting such a toxic liquid is disclosed. The infusion set of Patent Document 1 has a first flow path that connects a needle that can pierce the infusion container, a second flow path that connects a connector for connecting to the drug solution container, and a needle that connects the patient that can pierce the patient. 3 flow paths, and connected to be able to switch these flow paths with a three-way stopcock. Further, Patent Document 2 proposes an infusion set for connecting a plurality of infusion containers. "Pre-priority technical literature" "Patent Literature"

[Patent Document 1] Japanese Laid-Open Patent Publication No. JP-A-2004-173844

"The subject to be solved by the invention"

However, it is sufficient that the number of liquid medicines that should be administered to a patient is not limited to one. Therefore, in Patent Document 1, when the chemical solution is injected from the second and subsequent chemical liquid container sides, it is necessary to remove the previous chemical liquid container connected to the connection member of the second flow path, and the next one A liquid container is attached to the connector. That is, with the operation of unloading the bottle opening liquid medicine container, in this case, the remaining chemical liquid may leak to the outside. In order to prevent this, it takes a lot of effort to connect the structure for connecting the drug solution container, and thus it is inevitable that the medical cost will increase. In addition, although the above description is directed to the case of treating a toxic chemical liquid, it is not limited thereto; and other drugs which may leak into the outside of the odorous and irritating chemical solution may be problematic. In the case of liquid, the same problem may occur.

Further, it is not limited to the treatment of a chemical liquid that may leak into the outside, and when a plurality of chemical liquid containers are used, such connection may cause trouble. For example, in the case of using the infusion set of Patent Document 1, when the liquid medicine supplied from one liquid medicine container is delivered, it is necessary to connect the next liquid medicine container; therefore, the burden on medical personnel is inevitably increased. It is.

Based on this, in the infusion set of Patent Document 2, a side injection path can be sequentially added to the main infusion path. In this infusion set, since a three-way stopcock having three connection ports for switching the infusion passage is provided, the three-way stopcock is a structure that allows all three connection ports to communicate; therefore, once an operation error occurs It is inevitable that there will be unforeseen problems. For example, in the case where all three connection ports are connected, it is possible to unintentionally confuse a plurality of chemical liquids, so that undesired interaction of the medicine may occur.

An object of the present invention is to provide an infusion set capable of easily connecting a plurality of chemical liquid containers for side injection to a main infusion path, and a method of using the same.

The infusion set according to the first aspect includes the first drip device and the second drip device. The first drip tool includes a first upstream side tube having a first end and a second end, a first downstream side tube having a first end and a second end, and a first three-way stopcock, the first three The first plug is connected to the first end of the first upstream side pipe and the first end of the first downstream side pipe, and has a first connection port, and the first upstream pipe can be connected to the first upstream pipe The first position in which the first downstream side pipe communicates and the second position in which the first downstream side pipe communicates with the first connection port portion. The second drip device includes a second upstream side tube having a first end and a second end, a second downstream side tube having a first end and a second end, and a second three-way stopcock, the first three The second plug is connected to the first end of the second upstream side pipe and the first end of the second downstream side pipe, and has a second connection port, and the second upstream pipe can be connected to the second upstream pipe The first position where the second downstream side pipe communicates and the second position where the second downstream side pipe communicates with the second connection port portion. The second end of the second downstream side pipe is configured to be connectable to or connect to the first connection port portion so that the first connection port portion communicates with the second downstream side pipe.

In this way, the first drip tool and the second drip device are configured to be connected or connected by a three-way stopcock that is a first drip tool, and the first drip device is used as a part of the main infusion path. The second drip device can be used for the side injection path of the drug solution. Moreover, since the three-way stopcock is also provided in the second drip device, the other side entrance passage can be easily secured by the second joint port portion of the three-way stopcock. Therefore, it is also possible to connect a plurality of chemical liquid containers at the same time, and when the chemical liquid is delivered from a plurality of chemical liquid containers, it is not necessary to specifically remove the used chemical liquid containers to install a new chemical liquid container. Therefore, a plurality of chemical liquid containers that can be easily used for side injection are connected to the main infusion path. Further, since it is not necessary to remove the used chemical solution container, the problem of the leakage can be effectively suppressed when a chemical liquid that may leak into the outside is used.

Further, therefore, since the three-way stopcock can only switch between the first position and the second position, it is difficult to cause an unexpected problem. For example, there is no unintentional confusing of the liquid medicine from a plurality of liquid medicine containers.

The infusion set according to the second aspect is the infusion set according to the first aspect, wherein the second drip device further has a second end of the second downstream side tube that is freely detachable a connector that is connected to the first connection port.

Thereby, the second end of the second downstream side pipe of the second drip tool is provided with a connector which is detachable from the first joint port of the three-way stopcock of the first drip tool. Therefore, it is possible to easily secure the side injection path of the chemical liquid by connecting the first drip tool to the second drip device as needed.

The infusion set according to the third aspect is the infusion set according to the second aspect, wherein the first connection port portion and the second connection port portion have the same shape.

Thereby, since the first connection port portion and the second connection port portion have the same shape, the connection member of the other second drip tool can be connected to the connection port portion of the second drip tool. Thereby, the second drip device can be connected in order, and the side injection path of the desired amount of the chemical liquid can be easily ensured.

The infusion set according to the fourth aspect is the infusion set according to the second aspect or the third aspect, wherein the first connection port portion and the connector are mutually connectable by a Luer lock type.

Thereby, since the first connection port portion and the connector are connected in a Luer lock type, it is possible to prevent the connector from coming off due to an unintentional external force.

The infusion set according to the fifth aspect is the infusion set according to the first aspect, wherein the second end of the second downstream side tube is configured such that the first connection port portion communicates with the second downstream side tube According to the aspect, it is difficult to be detached or not connected to the first connection port.

The infusion set according to the sixth aspect is the infusion set according to any one of the first aspect to the fifth aspect, wherein the first drip device has the second end of the first upstream side tube: The first needle of the infusion container that can pierce the infusion container and communicate the first upstream side tube.

Thereby, the first needle of the first upstream side tube of the first drip device is provided with a first needle capable of piercing the infusion container. Thereby, the main infusion path can be easily established.

The infusion set according to any one of the first aspect to the sixth aspect, wherein the second drip device has the second end of the second upstream side tube: The second needle of the infusion container that can pierce the infusion container and communicate the second upstream side tube.

Thereby, the second needle capable of piercing the drug solution container is provided in the second end of the first upstream side tube of the second drip tool. Therefore, the side injection path of the chemical liquid can be easily established.

The infusion set according to the eighth aspect of the present invention is the infusion set according to the seventh aspect, wherein the second drip device further includes: the second needle is contained therein, the medical liquid container can be accommodated, and the medicine container is accommodated A bag that can be sealed after the liquid medicine container.

Thereby, the second needle that can pierce the drug solution container is enclosed in a bag that can accommodate the drug solution container in a sealed state. Thereby, the liquid medicine container can be pierced by the second needle in the sealed bag. Therefore, in the case of using a chemical liquid that leaks to the outside and may become a problem, the problem of the leakage can be more effectively suppressed.

The infusion set according to the ninth aspect is the infusion set according to any one of the first aspect to the eighth aspect, wherein the second end of the first downstream side tube is an open end.

Thereby, the standard infusion set can be easily connected to the first infusion set. The standard infusion set as used herein generally refers to a puncture needle having an infusion container or the like at one end, and further has a drip tube, a lock, and a patient's puncture needle, etc., but particularly without a side portion. Infusion set. In other words, by connecting the puncture needle such as the infusion container to the open end of the first infusion set, it is possible to change the standard infusion set widely used at the medical site to the infusion set suitable for the side injection of the chemical liquid.

The infusion set according to any one of the first aspect to the ninth aspect, further comprising: the above-described first downstream side tube that can be connected or connected to the first downstream side tube The second end, and the main infusion set having the drip tube, the lock, and the puncture needle in order from the upstream to the downstream.

Thereby, the main infusion set having the drip tube, the lock, and the puncture needle is configured to be connected to or connectable to the first infusion set. Thereby, the main infusion path can be easily ensured.

The method of using the infusion set according to the eleventh aspect is a method of using the infusion set according to the tenth aspect, and includes the following steps (1) to (4). (1) Forming: the second end of the first upstream side pipe is connected to the infusion container, the first three-way stopcock is in the first position, and the lock is open, and the infusion container is from the infusion container The infusion is filled with the step of the inside of the main infusion set that has been connected to the first drip tool and the first drip device. (2) Operation: the second drip device that is connected to the first connection port portion of the second downstream side pipe, and the second end of the second upstream pipe is connected to the chemical liquid container The steps. (3) The locker is locked, the first three-way stopcock is set to the second position, and the second three-way stopcock is set to the first position, and the drip tube is pumped and operated. The step of moving the air in the second drip device inside the liquid chemical container. (4) a step of opening the above-mentioned lock and delivering the chemical from the liquid chemical container.

The method of using the infusion set according to the twelfth aspect is a method of using the infusion set according to the eleventh aspect, and further includes the following step (5). (5) A step of delivering a chemical liquid from the new chemical liquid container using the new second dropping device.

Further, the step (5) includes the following substeps (5a) to (5e). (5a) a step of attaching the tip end of the syringe filled with the cleaning liquid to the second connection port portion of the previous second drip device, and cleaning the inside of the infusion set by the washing liquid from the syringe . (5b) The step of detaching the syringe from the second connection port and additionally connecting the second end of the second downstream tube of the new second drip tool to the second connection port. (5c) a step of connecting the second end of the second upstream side tube of the new second drip tool to the new chemical liquid container. (5d) In the case where the lock is closed, the first three-way stopcock is the second position, and the second three-way stop of the previous second drip device is the second position, the new one. In the state in which the second three-way stopcock of the two-drop device is in the first position, the step of pumping the drip tube to move the air in the new second drip device to the inside of the new liquid chemical container is performed. (5e) a step of opening the above-mentioned lock and delivering the liquid medicine from the new liquid medicine container.

The method of using the infusion set according to the thirteenth aspect is a method of using the infusion set related to the twelfth aspect, and further includes the following step (6). (6) The step of the above-described steps of delivering the drug solution from the new drug solution container is repeatedly performed.

The method of using the infusion set according to the fourteenth aspect is a method of using the infusion set according to the tenth aspect, and includes the following steps (1) to (6). (1) In the aspect in which the second end of the second downstream side pipe of the other second dropping device is connected to the second connecting port portion of one of the second drip devices, at least one is prepared. The second drip device is connected to the front of the second drip device, and the second end of the second downstream side tube of the first drop device is connected to the first connecting port and the main infusion set The upstream end of the group is a step of connecting the infusion set to the second end of the first downstream side tube. (2) the end drip device to which the second drip device is connected at the distal end, and the second end of the second upstream side tube is connected to the cleaning liquid container; and the second drip device other than the end drip tool At least one intermediate drip device is configured to connect the second end of the second upstream side tube to the chemical liquid container. (3) Forming: the second end of the first upstream side pipe is connected to the infusion container, the first three-way stopcock is in the first position, and the lock is opened, and is to be infused by the infusion container The infusion is filled with the steps of the first drip device and the inside of the main infusion set. (4) The second three-way stopcock in which the first third-way stopcock is the second position and the intermediate drip device is the second position and the end of the distal drip device. When the three-way stopcock is in the first position, the step of pumping the drip cylinder to move the air in the second drip device to the inside of the washing liquid container is performed. (5) a step of opening the lock device, setting the second three-way stopcock of at least one of the intermediate drip devices to the first position, and delivering the chemical liquid from the chemical liquid container. (6) The step of setting the second three-way stopcock of the intermediate drip device connected to the medical solution container that has been delivered to the second position, and flowing the cleaning liquid into the inside of the infusion set.

The method of using the infusion set according to the fifteenth aspect is a method of using the infusion set according to the tenth aspect, and includes the following steps (1) to (6). (1) In the aspect in which the second end of the second downstream side pipe of the other second drip tool is connected to the second connection port of one of the second drip devices, at least one is prepared. The second drip device is connected to the front of the second drip device, and the second end of the second downstream side tube of the first drop device is connected to the first connecting port and the main infusion set The upstream end of the group is a step of connecting the infusion set to the second end of the first downstream side tube. (2) the end drip device to which the second drip device is connected at the end, the second end of the second upstream tube is connected to the infusion container; and at least 1 of the second drip device other than the end drip device The intermediate drip device connects the second end of the second upstream side tube to the chemical liquid container. (3) Forming: the second end of the first upstream side pipe is connected to the infusion container, the first three-way stopcock is in the first position, and the lock is opened, and the infusion is from the infusion The infusion of the container is filled with the steps of the first drip device and the inside of the main infusion set. (4) The second three-way stopcock in which the first third-way stopcock is the second position and the intermediate drip device is the second position and the end of the distal drip device. When the three-way stopcock is in the first position, the step of pumping the drip cylinder to move the air in the second drip device to the inside of the infusion container is performed. (5) a step of opening the lock device, setting the second three-way stopcock of at least one of the intermediate drip devices to the first position, and delivering the chemical liquid from the chemical liquid container. (6) The second three-way stopcock of the intermediate drip device connected to the drug solution container that has been delivered is set to the second position, and the infusion solution is flown into the inside of the infusion set.

The method of using the infusion set according to the sixteenth aspect is a method of using the infusion set according to the fourteenth aspect or the fifteenth aspect, and further includes the following step (7). (7) A step of feeding the chemical liquid from the chemical liquid container by setting the second three-way stopcock of the intermediate drip device connected to the chemical liquid container that has not been delivered. Invention effect

According to the first aspect, the first drip tool and the second drip device are configured to be connectable or connected by the three-way stopcock used as the first drip tool, so that the first drip device can be used as a part of the main infusion path. The second drip device can be used and used in the side injection path of the drug solution. Further, the second drip tool is also provided with a three-way stopcock, and the second side port portion of the three-way stopcock can be easily passed through the other side hole passage. Therefore, it is also possible to connect a plurality of chemical liquid containers at the same time. When the chemical liquid is delivered from a plurality of chemical liquid containers, it is not necessary to intentionally remove the used chemical liquid containers to replace them with new chemical liquids. container. Therefore, it is possible to easily connect a plurality of chemical liquid containers for side injection to the main infusion path. Moreover, since it is not necessary to remove the used chemical liquid container, the problem of the leakage can be effectively suppressed by using a chemical liquid which may leak to the outside and may become a problem.

Further, according to the first aspect, since the three-way stopcock can only cut the first position and the second position, it is difficult to cause an unpredictable problem. For example, there is no unintentional confusing of the liquid medicine from a plurality of liquid medicine containers.

"The way to implement the invention"

Hereinafter, an infusion set according to an embodiment of the present invention and a method of using the same will be described with reference to the drawings.

<1. Overall Configuration of Infusion Set> Fig. 1 is an overall configuration diagram of the infusion set 1 according to the present embodiment. As shown in the figure, the infusion set 1 includes a first drip device 10, a second drip device 20, and a main infusion set 30. In the present embodiment, the first drip device 10, the second drip device 20, and the main infusion set 30 are configured as individual instruments, and the second to fourth figures are the first drip device 10 and the second drip device 20, respectively. And the composition of the monomer of the main infusion set 30. Further, by connecting the first drip device 10, the second drip device 20, and the main infusion set 30 in the same manner as in Fig. 1, the side injection path for injecting the liquid from the main infusion path side is branched. Infusion line (line). In the infusion set 1 according to the present embodiment, the second drip device 20 can be sequentially connected one by one, and can be easily formed as shown in the ninth and tenth aspects. The number of additional sideways channels.

The infusion set 1 is suitable for laterally injecting all kinds of liquid medicine into the main infusion path. However, in this paper, the use case of the liquid medicine which may be a problem for external leakage may be described as a special use case. . The so-called leakage to the outside may become a problem, for example, a toxic liquid. Once exposed, the person handling it (mainly medical personnel, hereinafter referred to as the user) may suffer serious Side effects or the possibility of a health hazard. Examples of such a drug solution are, for example, anti-spasmodic agents, immunosuppressants, antiviral agents, antibiotics, radiopharmaceuticals and the like. Further, another example of the chemical solution that may leak into the outside may be, for example, a medicinal liquid having an odor or irritancy.

Hereinafter, the details of each part of the infusion set 1 will be described after explaining the infusion set 1 and the infusion container 5 and the chemical solution container 6 to be used.

<2. Composition of each department > <2-1. Infusion container> The infusion container 5 used in the present embodiment is a container for storing an infusion such as Ringer's solution or physiological saline. The container itself of the infusion container 5 can be configured in various forms, but in the present embodiment, it is configured as shown in Fig. 5. In other words, the infusion container 5 according to the present embodiment includes a container body 51 having a rectangular shape in a bag shape, and a discharge member 52 attached to one end of the container body 51. The container body 51 may be formed by, for example, stacking two sheets of plastic sheets and heat-sealing the periphery thereof, and the chemical solution is housed in the internal space 511. The discharge member 52 is formed in a tubular shape so that the internal space 511 of the container body 51 communicates with the outside. The discharge port formed by the discharge member 52 is closed by a rubber plug 521, and the rubber plug 521 is inserted into the puncture needle 11 or the like to be described later, and the infusion liquid in the container body 51 can be discharged to the outside.

<2-2. Chemical Liquid Container> The chemical liquid container 6 used in the present embodiment is a container in which a chemical liquid which may leak into the outside may be stored as described above. Although the container itself of the chemical solution container 6 can be configured in various aspects, in the present embodiment, as shown in Fig. 6, the container itself has the same configuration as the container itself of the infusion container 5. In other words, the chemical solution container 6 according to the present embodiment includes a container body 61 having a rectangular shape in a bag shape, and a discharge member 62 attached to one end of the container body 61. The container body 61 may be formed by, for example, stacking two sheets of plastic sheets to heat seal the periphery thereof, and the chemical liquid is accommodated in the internal space 611. The discharge member 62 is formed in a cylindrical shape in such a manner that the internal space 611 of the container body 61 communicates with the outside. The discharge port formed by the discharge member 62 is closed by a rubber plug 621, and the chemical solution in the container body 61 can be discharged to the outside by inserting the rubber plug 621 by a puncture needle 21 or the like as will be described later.

<2-3. First Drip Device> Next, the first drip tool 10 will be described in detail with reference to FIG. 2 . The first drip tool 10 according to the present embodiment includes the puncture needle 11, the upstream side tube 12, the three-way stopcock 13, and the downstream side tube 14 in order from the upstream to the downstream.

The puncture needle 11 is a general bottle needle used in a general infusion set, and can pierce the rubber stopper of the infusion container 5 or the drug solution container 6. In the present embodiment, the puncture needle 11 pierces the rubber plug 521 of the infusion container 5. The puncture needle 11 may be a rigid plastic such as polycarbonate, polyacetal or ABS resin. However, the puncture needle 11 is not limited to these examples, and may be, for example, metal. A flow path is formed in the inside of the puncture needle 11, and an inlet and an outlet of the flow path are formed in the end portion 11a on the needle front side and the end portion 11b on the opposite side. Therefore, by piercing the rubber plug 521 of the infusion container 5 by the puncture needle 11, the inside of the infusion container 5 and the inside of the upstream side tube 12 connected to the end portion 11b of the puncture needle 11 can be communicated.

The upstream side tube 12 and the downstream side tube 14 are general tubes used in a general infusion set, and flow paths are formed in the respective interiors. These tubes 12, 14 are typically formed of a soft material, for example, a flexible plastic such as soft vinyl chloride, polybutadiene, or polyethylene. The length may be appropriately set, but it is preferably about 5 cm to 15 cm as the necessary minimum length that does not complex each other.

In the interior of the three-way stopcock 13, a three-fork type flow path is formed. More specifically, the three-way stopcock 13 has an outer casing 110 and a dial member 120. The exterior body 110 has a cylindrical center portion 130 and a first branching portion 131, a second branching portion 132, and a third branching portion 133 that protrude outward in the radial direction from the outer wall surface of the center portion 130. Each of the first to third branching portions 131 to 133 has a cylindrical shape having a central axis extending in the radial direction of the central portion 130, and a space between the first to third branching portions 131 to 133 and the central portion 130. The space inside is connected. In the present embodiment, the first to third branching portions 131 to 133 are disposed around the center portion 130 at intervals of 180°, 90°, and 90°.

On the other hand, the turntable member 120 is provided in a space inside the center portion 130 of the exterior body 110: a cylindrical rotating shaft 121 that is rotatably inserted, and a lever 122 that is disposed outside the center portion 130. The control lever 122 protrudes outward in the radial direction from the outer wall surface of the central portion 130. By rotating the dial member 120 by the finger on the control lever 122, the three-way stopcock 13 can be switched to the first position described later. 2nd position.

An internal space is formed in the rotating shaft 121 of the turntable member 120. Further, three openings (not shown) communicating with the internal space are formed on the outer wall of the rotating shaft 121. In the present embodiment, the three openings are arranged at intervals of 180, 90, and 90 in the circumferential direction. Then, by rotating the turntable member 120 to change the position in the circumferential direction of the openings of the first branching portion 131, the second branching portion 132, and the third branching portion 133, the three-way stopcock can be switched. The flow direction of the liquid of 13. More specifically, in the present embodiment, when the control lever 122 is in the direction of the third branching portion 133, two of the three openings face the first branching portion 131 and the second branching portion 132. Further, the third branching portion 133 is in a state opposite to any one of the openings. In response to this state being the first position, that is, corresponding to the first position, the first branching portion 131 and the second branching portion 132 are in communication with each other. On the other hand, when the control lever 122 is directed in the direction of the first branching portion 131, two of the three openings face the second branching portion 132 and the third branching portion 133, and the first branching portion 131 is not in the state of facing either opening. This state corresponds to the second position, that is, the second position corresponds to the state in which the second branching portion 132 and the third branching portion 133 are in communication with each other.

In the present embodiment, the end portion 133a of the third branching portion 133 has a shape that can be detachably connected to the connector 25 of the second drip tool 20 to be described later. That is, the end portion 133a of the third branching portion 133 forms a joint portion with the joint member 25. Next, as will be described later in detail, the outer surface of the end portion 133a of the third branching portion 133 is formed with a crepe 135.

Further, in the present embodiment, the case where the three-way stopcock 13 is formed into a T-shaped flow path has been described. However, it is needless to say that it may be formed in a Y shape. In this case, the position of the three openings in the outer wall of the rotating shaft 121 or the position in the circumferential direction of the first to third branching portions 131 to 133 can be appropriately changed. In other words, the three-way stopcock 13 can be used as long as it can switch between the first position and the second position, and any three-way stopcock can be used. Of course, it is not possible to control the lever. Further, in the three-way stopcock, there is a thing having a third position for converging the flow from the three-way flow; however, in order to avoid erroneous operation, it is preferable to switch only the first position and the second position. Position three-way stopcock. In the present embodiment, the outer casing 110 has a stopper 134, and the range of rotation of the dial member 120 is restricted by the stopper 134. Thereby, the turntable member 120 can switch only the first position and the second position, but cannot switch the third position.

The three-way stopcock 13 may be made of a hard plastic such as polycarbonate or polyethylene. However, the three-way stopcock 13 is not limited to these examples, and may be, for example, a metal one.

The one end portion 12a of the upstream side tube 12 is connected to the first branching portion 131 of the three-way stopcock 13, and the other end portion 12b is connected to the end portion 11b of the puncture needle 11. Further, the end portion 14a of one side of the downstream side pipe 14 is connected to the second branching portion 132 of the three-way stopcock 13. Further, the other end portion 14b of the downstream side tube 14 is an open end and is connected to the puncture needle 31 of the main infusion set 30 to be described later. In the present embodiment, the first branching portion 131 is press-fitted into the end portion 12a of the upstream side tube 12, and the end portion 11b of the puncture needle 11 is press-fitted into the end portion 12b of the upstream side tube 12. Further, the second branching portion 132 is also press-fitted into the end portion 14a of the downstream side tube 14, and the puncture needle 31 of the main infusion set 30 is also pressed and inserted into the end portion 14b of the downstream side tube 14. As a result, such components are difficult to remove once they are attached, thereby preventing unintended shedding. Further, the open end may be previously plugged with a cap or a film before use. Further, as described above, since the connection between the main infusion set 30 and the first drip device 10 is performed by inserting only the needle 31 into the end portion 14b of the tube 14, it is not necessary to prepare a special one for the connection between the two.専 supplies. Thus, the pan-product can be used as the main infusion set 30, and the medical cost can be suppressed.

Therefore, since the three-way stopcock 13 is connected to the upstream side tube 12 and the downstream side tube 14 as described above, the first position described above is a position at which the upstream side tube 12 and the downstream side tube 14 communicate with each other. Further, the second position described above is a position at which the downstream side tube 14 and the third branching portion 133 communicate with each other.

<2-4. Second Drip Device> Next, the third drip device 20 will be described in detail with reference to FIG. 3 . The second drip tool 20 according to the present embodiment includes the puncture needle 21, the upstream side tube 22, the three-way stopcock 23, the downstream side tube 24, and the connecting member 25 in order from the upstream to the downstream. In addition, although the first and third figures are omitted, the second drip device 20 according to the present embodiment further includes an exposure preventing cover 26 that includes the puncture needle 21 (see FIGS. 7 and 8). Figure). The exposure preventing cover 26 is a type in which the chemical liquid container 6 can be housed in a sealed state to prevent leakage of the chemical liquid from the chemical liquid container 6. In the present embodiment, the puncture needle 21, the upstream side tube 22, the three-way stopcock 23, and the downstream side tube 24 have the same functions as the above-described puncture needle 11, upstream side tube 12, three-way stopcock 13, and downstream side tube 14, respectively. Composition. In other words, the second drip tool 20 according to the present embodiment is an instrument in which the connector 25 and the exposure preventing cover 26 are added to the first drip device 10. However, in the following, the configuration of the same members 21 to 24 will be simplified as appropriate, and will be further described.

The puncture needle 21 is a general bottle needle used in a general infusion set and can pierce the rubber stopper of the infusion container 5 or the drug solution container 6. In the present embodiment, the puncture needle 21 is a rubber plug 621 that can pierce the drug solution container 6. A flow path is formed in the inside of the puncture needle 21, and an inlet and an outlet of the flow path are formed in the end portion 21a on the needle front side and the end portion 21b on the opposite side. Therefore, by piercing the puncture needle 21 through the rubber stopper 621 of the drug solution container 6, the inside of the drug solution container 6 can communicate with the inside of the upstream side tube 22 connected to the end portion 21b of the puncture needle 21.

The upstream side tube 22 and the downstream side tube 24 are general types of tubes used in a general infusion set, and flow paths are formed in the respective interiors. These tubes 22, 24 are typically constructed of a soft material.

In the interior of the three-way stopcock 23, a three-fork type flow path is formed. More specifically, the three-way stopcock 23 has an outer casing 210 and a turntable member 220. The exterior body 210 has a cylindrical center portion 230 and a first branching portion 231, a second branching portion 232, and a third branching portion 233 that protrude outward in the radial direction from the outer wall surface of the center portion 230. Each of the first to third branching portions 231 to 233 is formed in a cylindrical shape having a central axis extending in the radial direction of the central portion 230, and a space portion and a central portion inside the first to third branching portions 231 to 233, respectively. The space inside the 230 is connected.

On the other hand, the turntable member 220 has a cylindrical rotating shaft 221 that is rotatably inserted into the inner space of the center portion 230 of the outer casing 210, and a control lever 222 that is disposed outside the central portion 230. The control lever 222 protrudes outward in the radial direction from the outer wall surface of the central portion 230. By rotating the dial member 220 by the finger on the lever 222, the three-way stopcock 23 can be switched to the first position described later. 2nd position.

An internal space is formed in the rotating shaft 221 of the turntable member 220. Further, three openings (not shown) communicating with the internal space are formed on the outer wall of the rotating shaft 221 . Therefore, by rotating the turntable member 220, the position in the circumferential direction of the openings of the first branching portion 231, the second branching portion 232, and the third branching portion 233 described above can be changed. The flow direction of the liquid of the three-way stopcock 23. More specifically, in the present embodiment, when the control lever 222 is oriented in the direction toward the third branching portion 233, the first branching portion 231 and the second branching portion 232 face the three openings. Two, and the third branching portion 233 is in a state of not facing any opening. This state corresponds to the first position; that is, the state corresponding to the first position is a state in which the first branching portion 231 and the second branching portion 232 are in communication with each other. On the other hand, when the control lever 222 is oriented in the direction toward the first branching portion 231, two of the three openings face the second branching portion 232 and the third branching portion 233, and the first branching portion 231 becomes a state that does not face any openings. This state corresponds to the second position; that is, the state corresponding to the second position is a state in which the second branching portion 232 and the third branching portion 233 are in communication with each other.

Further, similarly to the three-way stopcock 13, a three-way stopcock of any shape can be used for the three-way stopcock 23. However, it is also preferable to use a three-way stopcock that can switch only the first position and the second position as the three-way stopcock 23. In the present embodiment, the exterior body 210 has a stopper 234, and the stopper 234 regulates the range of rotation of the turntable member 220. Therefore, the turntable member 220 can be switched only to the first position and the second position, and cannot be switched to the third position. Further, the three-way stopcock 23 can also be configured by the same material as the three-way stopcock 13.

The connector 25 can be connected to the end portion 133a of the third branching portion 133 so that the inside of the third branching portion 133 of the first drip tool 10 communicates with the inside of the downstream side tube 24. In the present embodiment, the connecting member 25 and the end portion 133a of the third branching portion 133 are configured to be detachable from each other in a Ruhr lock type. More specifically, the connector 25 has an outer cylindrical portion 251 and an inner cylindrical portion 252 that is concentrically arranged in the outer cylindrical portion 251. One end 252a of the inner cylindrical portion 252 can be inserted into the third branching portion 133. On the other hand, the other end 252b of the inner cylindrical portion 252 protrudes outward from the outer cylindrical portion 251, and is strongly connected so as to be inserted into the end portion 24b of the downstream side tube 24. Further, in a state where the connecting member 25 and the third branching portion 133 are connected, the end portion 133a of the third branching portion 133 is inserted into the slit between the outer cylindrical portion 251 and the inner cylindrical portion 252. Further, on the inner wall surface of the outer cylindrical portion 251, a ridge pattern 253 corresponding to the ridge pattern 135 of the third branch portion 133 is formed, and the connector 25 and the third member are firmly connected by screwing them together. Branching section 133. Further, in the state in which the connector 25 and the third branching portion 133 are connected, the inside of the third branching portion 133 communicates with the inside of the inner cylindrical portion 252 and communicates with the inside of the downstream side tube 24.

In the present embodiment, the third branching portion 233 of the second drip device 20 has the same shape as the third branching portion 133 of the first infusion set. Therefore, the connector 25 of the second drip tool 20 can be similarly connected to the end portion 233a on the opposite side of the central portion 230 of the third branching portion 233. However, it is not necessary to use the end portion 233a of the same second drip tool 20 to be connected to the connector 25, and the end portion 233a of the second drip tool 20 is connected to the connector 25 of the other second drip tool 20. In other words, the end portion 233a of the third branching portion 233 forms a joint portion with the connecting member 25 of the second second drip tool 20. Therefore, the rib 235 having the same shape as the crepe 135 is also formed on the outer surface of the end portion 233a of the third branching portion 233.

One end portion 22a of the upstream side tube 22 is connected to the first branching portion 231 of the three-way stopcock 23, and the other end portion 22b is connected to the end portion 21b of the puncture needle 21. Further, the one end portion 24a of the downstream side pipe 24 is connected to the second branching portion 232 of the three-way stopcock 23, and the other end portion 24b is connected to the end portion 252b of the connecting member 25. In the present embodiment, the first branching portion 231 is press-fitted and inserted into the end portion 22a of the upstream side tube 22; the end portion 21b of the puncture needle 21 is press-fitted and inserted into the end portion 22b of the upstream side tube 22. Further, the second branching portion 232 is also press-inserted and inserted into the inside of the end portion 24a of the downstream side tube 24; the end portion 252b of the connecting member 25 is also pressed and inserted into the inside of the end portion 24b of the downstream side tube 24. As a result, when the members are once connected, it becomes difficult to remove, and thus unpredictable fall-off can be prevented.

Therefore, since the three-way stopcock 23 is connected to the upstream side pipe 22 and the downstream side pipe 24 as described above, the above-described first position is a position at which the upstream side pipe 22 and the downstream side pipe 24 communicate with each other. Further, the second position described above is a position at which the downstream side pipe 24 and the third branching portion 233 are communicated with each other.

Next, the exposure preventing cover 26 will be described with continued reference to FIG. As shown in Fig. 7, the exposure preventing cover 26 has a bag-shaped cover body 260, a connecting portion 263 which is an end portion 260a of the cap body 260 (the lower end portion of Fig. 7), and the opposite of the cap body 260. The opening and closing mechanism 264 of the side end portion (the upper end portion of Fig. 7). The above-described puncture needle 21 is fixed to the connecting portion 263. Further, the connecting portion 263 and the puncture needle 21 may be integrally formed or may be separate bodies. However, in the latter case, the connection portion between the two is configured such that the inside and the outside of the exposure preventing cover 26 do not have to communicate. The connecting portion 263 is not particularly limited as long as it can seal the end portion 260a of the cap body 260 in an airtight manner, including the material. Further, although the opening and closing mechanism 264 can be configured in various aspects, in the present embodiment, it is a sliding type zipper structure having the slider 266.

Further, the above-described connecting portion 263 can be omitted. In this case, for example, a puncture needle may be used in the opening of the end portion 260a of the cap body 260, and a heat seal may be applied to the peripheral portion of the opening to seal the opening.

The cover body 260 can be configured in various aspects. In the present embodiment, two resin film films are stacked and heat-sealed to the peripheral side portions. The material of the cap body 260 is not particularly limited, but preferably has at least one of water repellency, light transmissivity, and gas barrier properties. In the case of light transmissivity, as will be described later, the connection of the rubber plug 621 of the chemical solution container 6 in the cap body 260 to the puncture needle 21 is easy to perform even from the outside of the cap body 260. A material having light transmissivity can be used by using polypropylene (PP), polyethylene (PE) or the like. Further, as the material having gas barrier properties, an inorganic material obtained by vapor-depositing polyethylene terephthalate (PET) or polyamide may be used, or an aluminum foil. In particular, an inorganic material which uses alumina or cerium oxide as a vapor deposition is used, and it is also possible to have both light transmittance. Further, in the case of having gas barrier properties, it is possible to prevent the vaporized chemical liquid from leaking to the outside of the cap body 260.

In the cap body 260, a portion closer to the upper side in FIG. 7 than the opening and closing mechanism 264 is configured as a plug 265. The plug 265 is a heat-sealed portion of the cap body 260 in this embodiment. A hanging hole 262 is formed in the center of the plug 265; an unsealed region 267 is formed on both sides of the hanging hole 262. Therefore, compared with the case where the plug is integrally heat-sealed, plastic deformation is more difficult to occur, so that deformation of the plug can be prevented and strength can be improved.

In the eighth drawing, the chemical solution container 6 is housed inside the exposure preventing cover 26, and the opening and closing mechanism 264 is closed, and the puncture needle 21 and the chemical solution container 6 are connected. As shown in the figure, the cover body 260 is provided with an inclined portion 622 whose diameter is reduced toward the end portion 260a, and the inclined portion 622 receives the shoulder portions of the container body 61 of the liquid chemical container 6. That is, the inclined portion 622 can support the chemical liquid container 6 so as not to move inside the exposure preventing cover 26.

<2-5. Main infusion set> Next, the configuration of the main infusion set 30 will be described with reference to Fig. 4 . The main infusion set 30 according to the present embodiment includes a puncture needle 31, a drip tube 32, a lock 33, and a puncture needle 34 in order from upstream to downstream. Further, the puncture needle 31, the drip tube 32, the lock 33, and the puncture needle 34 are connected to each other through the tube 35.

The puncture needle 31 has the same configuration as the puncture needles 11 and 21; in the present embodiment, it is inserted into the end portion 14b of the downstream side tube 14 of the first drip device 10. The drip tube 32 is a general drip tube used in a general infusion set, and the flow rate in the infusion line can be visually recognized. Further, the drip tube 32 is made of a soft elastic material, and can perform a pumping operation to be described later. Further, when dripping by the infusion set 1, the drip tube 32 has a function as a drip tube. Therefore, the first drip tool 10 and the second drip device 20 according to the present embodiment do not have a drip tube, and have a simple configuration. Thereby, medical costs can be suppressed.

The lock 33 is an instrument for adjusting or closing the flow in the infusion line. The lock 33 according to the present embodiment is a rolling jig shown in Fig. 4, and may be, for example, an instrument capable of adjusting or closing a flow rate such as a clip. The puncture needle 34 at his end is a general injection needle used in a general infusion set and can be inserted into the patient. Further, when the drip is performed by the infusion set 1, the lock 33 has a function as a lock. Therefore, the first drip tool 10 and the second drip device 20 according to the present embodiment are not provided with a lock, and have a simple configuration. Thereby, medical costs can be suppressed.

<3. How to use the infusion set > The following describes the representative method of using the infusion set 1. Here, three methods of use will be described.

<3-1. First use method First, when the user starts dripping, the first drip device 10, the second drip device 20, the main infusion set 30, the infusion container 5, and the drug solution container 6 are prepared. The liquid chemical container 6 is prepared together with the number of counts required to meet the administration amount. The second drip device 20 is prepared in the same amount as the chemical solution container 6.

Next, the puncture needle 31 of the main infusion set 30 is connected to the end portion 14b of the downstream side tube 14 of the first drip tool 10 (see Fig. 9A). This connection is made by inserting the puncture needle 31 into the inside of the end portion 14b of the downstream side tube 14. At this time, since the inner diameter of the downstream side tube 14 is smaller than the outer diameter of the puncture needle 31, the downstream side tube 14 and the puncture needle 31 are pressed together and are firmly fixed. Further, in order to be fixed in a strong manner, a spring clip or the like can be used as needed.

Then, the hook of the drip hanger (not shown) is passed through the inside of the hanging hole 512 (see FIG. 5) formed on the opposite end of the discharge member 52 of the infusion container 5, and the infusion container 5 is suspended. Drip on the hanger. Continuing, the puncture needle 11 of the first drip tool 10 is pierced by the rubber plug 521 of the infusion container 5 (see FIG. 9B). Further, at this time, it is preferable that the lock 33 of the main infusion set 30 is in a closed state.

Then, the three-way stopcock 13 of the first drip tool 10 is set to the first position, and the locker 33 is opened, and the infusion liquid from the infusion container 5 is filled in the main infusion passage (see FIG. 9C). Next, the puncture needle 34 at the end of the main infusion set 30 is inserted into the patient.

Continue and move to the side-by-side step of administering the drug solution. First, the chemical liquid container 6 is housed in the exposure preventing cover 26 of the second drip tool 20. At this time, the rubber plug 621 side of the chemical solution container 6 is housed in a state of being directed toward the side of the connection portion 263 of the exposure preventing cover 26. Next, the opening and closing mechanism 264 is closed, and the chemical solution container 6 is hermetically sealed to the inside of the exposure preventing cover 26.

Then, the hook of the drip hanger for unillustrated passage is passed through the inside of the hanging hole 262 of the exposure preventing cover 26, and the chemical liquid container 6 and the exposure preventing cover 26 are hung on the drip hanger. Further, a hanging hole 612 is formed at an end portion on the opposite side of the discharge member 62 of the chemical solution container 6 (see FIG. 6), and in the case where the second drip device 20 in which the exposure preventing cover 26 is not present is used, The hanging hole 612 hangs the liquid chemical container 6. Next, the connector 25 of the second drip tool 20 is connected to the third branching portion 133 of the three-way stopcock 13 of the first drip tool 10. In this state, the puncture needle 21 of the second drip tool 20 is pierced by the rubber plug 621 of the drug solution container 6 (see FIG. 9D).

Then, the lock 33 is brought into a closed state, the three-way stopcock 13 of the first drip tool 10 is set to the second position, and the three-way stopcock 23 of the second drip tool 20 is set to the first position. Then, in this state, the drip tray 32 is pumped. The pumping operation is carried out as usual, with the finger pressing the dropper 32 several times. Thereby, the air in the flow path of the second drip tool 20 is moved into the chemical liquid container 6, and the flow path of the second drip tool 20 is filled with the chemical liquid (refer to FIG. 9E). Then, when the lock device 33 is in the open state, the chemical liquid passes through the flow path in the second drip device 20, the flow path on the downstream side of the three-way stopcock 13 in the first drip device 10, and the main infusion set 30. The flow path inside is delivered to the patient's body.

In the case where only one liquid chemical container 6 is used, when the medical liquid in the chemical liquid container 6 is delivered, the infusion set is discarded after the puncture needle 34 is pulled out from the patient and the cover is closed. 1. At this time, the position of the three-way stopcocks 13, 23 is not changed without performing any part of the infusion set 1. Thus, the infusion line including the side injection passage used is closed from the outside. Therefore, it is possible to prevent the residual chemical liquid from leaking to the outside.

On the other hand, in the case of another subsequent delivery of the chemical liquid, the next chemical liquid container 6 is connected to the infusion set 1 by using the second second dropping device 20, and an additional side injection path is established. By repeating only the required number of times, it is possible to deliver the drug solution from the desired number of drug solution containers 6 to the patient. Specifically, the following operations are performed.

First, in order to wash the chemical liquid remaining in the infusion line, a syringe (not shown) filled with the washing liquid is prepared. The so-called washing liquid generally refers to physiological saline or glucose solution. Next, after the tip end of the syringe is connected to the third branching portion 233 of the three-way stopcock 23 of the previous second drip tool 20, the three-way stopcock 23 is set to the second position. Therefore, the cleaning liquid is supplied from the syringe to the three-way stopcock 23 of the second drip tool 20 to clean the inside of the infusion line. After the washing, the three-way stopcock 23 of the previous second drip tool 20 is changed to the first position.

Then, the syringe is removed from the third branching portion 233 of the previous second drip tool 20, and the connector 25 of the second second drip tool 20 is connected to the third branching portion 233 instead. Further, the next chemical liquid container 6 is hermetically stored in the exposure preventing cover 26 of the second second drip tool 20, and the exposure preventing cover is hung on the drip hanger. In this state, the puncture needle 21 of the next second drip tool 20 is pierced by the rubber plug 621 of the next chemical solution container 6. This operation is the same as the operation of the previous second drip device 20.

Then, the lock 33 is brought into a closed state, the three-way stopcock 23 of the previous second drip tool 20 is set to the second position, and the three-way stopcock 23 of the second second drip tool 20 is set to the first position. Next, in this state, the drip tray 32 is pumped. As a result, the air in the flow path of the second drip tool 20 at the end moves into the chemical liquid container 6 at the end, and the flow path of the second drip tool 20 at the end is filled with the washing liquid (see FIG. 9F). Then, when the lock device 33 is in the open state, the chemical liquid passes through the flow path in the second drip tool 20 at the end, and the flow path on the downstream side of the three-way stopcock 23 in the second drip tool 20 other than the end, The flow path on the downstream side of the three-way stopcock 13 in the first drip device 10 and the flow path in the main infusion set 30 are delivered to the inside of the patient.

Then, the above-described operation of the chemical liquid container 6 having only the required number of additions is repeated. Next, when the delivery of the chemical solution from the last chemical solution container 6 is completed, the syringe is used to wash the infusion line as described above, and after the patient pulls out the puncture needle 34 and covers the cover, the infusion set is discarded in this manner. Group 1. At this time, the position of the three-way stopcocks 13, 23 is not changed without removing any part of the infusion set 1. Thus, the infusion line including the side injection passage used is closed from the outside. Therefore, it is possible to prevent the remaining liquid from leaking to the outside.

<3-2. Second method of use > Next, the second method of using the infusion set 1 will be described. The first method of use described above is advantageous in that the drug solution container 6 is sequentially connected while the drug solution is being dispensed. However, it is not possible to connect all of the second drip devices 20 at the beginning. In this case, since the second dropping device 20 and all the chemical liquid containers 6 can be connected to each other in the first use method described later, it is possible to suitably use the amount of the chemical liquid to be used in advance.

In the present method, first, the first drip device 10, the second drip device 20, the main infusion set 30, the infusion container 5, and the drug solution container 6 are prepared. The chemical liquid container 6 is prepared in accordance with the required number of the delivery amount, and the second drip device 20 is a number of the preparation liquid chemical container 6 plus one. In the 10A to 10G drawings, an example in which two chemical liquid containers 6 are used is shown for the sake of simplicity.

Moreover, in the second method of use, the cleaning liquid container 7 filled with the cleaning liquid is also prepared (see FIG. 10B). The container itself of the cleaning liquid container 7 may be the same as the infusion container 5 and the chemical solution container 6; the cleaning liquid container 7 according to the present embodiment has a container body 71 for enclosing the cleaning liquid, and is connected to the container body. The rubber plug 721 used in 71. Further, in the cleaning liquid container 7, a hanging hole 712 for connecting to the hook for the drip hanger is also formed.

Next, the end portion 14b of the downstream side tube 14 of the first drip tool 10 is connected to the puncture needle 31 of the main infusion set 30. Moreover, the connector 25 of the second drip tool 20 is connected to the third branching portion 133 of the three-way stopcock 13 of the first drip tool 10. Further, the connector 25 of the next second drip tool 20 is connected to the third branching portion 233 of the previous second drip tool 20. Then, the operation of the connection of the second drip tool 20 is repeated only once by the number of the chemical liquid containers 6 to be used. Further, the operation of each of such connections may be performed in the same manner as in the case of the first method of use. Furthermore, the three-way stopcock 13 of the first drip tool 10 is set to the first position, and the three-way stopcock 23 of all the second drip tool 20 is set to the second position (see the tenth AA). Figure).

Next, in the same manner as in the first method of use, the infusion container 5 and the drug solution container 6 are hung on the drip hanger. Next, in this state, the puncture needle 11 of the first drip device 10 pierces the rubber plug 521 of the infusion container 5. In addition, among the second drip devices 20, the second drip tool 20 (hereinafter referred to as the end drip device 20a) is accommodated in the second drip tool 20 (hereinafter referred to as the end drip device 20a) at the end of the last additional connection ( Hereinafter, it is referred to as the inside of the exposure preventing cover 26 of the intermediate drip device 20b), and is sealed. Next, the rubber pegs 621 of the chemical solution container 6 are respectively pierced by the puncture needles 21 of all the intermediate drip devices 20b.

Moreover, the washing liquid container 7 is also hung on the drip hanger in the same manner as the infusion container 5 and the chemical liquid container 6. Next, in this state, the puncture needle 21 of the end drip tool 20a punctures the rubber plug 721 of the cleaning liquid container 7 (see FIG. 10B). Further, the cleaning liquid container 7 does not need to be covered by the exposure preventing cover 26. As shown in Fig. 10B, the second drip tool 20 for use as the cleaning liquid container 7 can be used by omitting the object of the exposure preventing cover 26.

Continuing, the three-way stopcock 13 of the first drip tool 10 is set to the first position, and the lock 33 is opened (see FIG. 10C), and the infusion from the infusion container 5 is filled in the main infusion path. Next, the puncture needle 34 at the end of the main infusion set 30 is inserted into the patient.

Then, the lock 33 is brought into a closed state, the three-way stopcock 13 of the first drip tool 10 is set to the second position, and the three-way stopcock 23 of the end drip tool 20a is set to the first position. Next, in this state, the drip tray 32 is pumped. Thereby, the air in the flow path of all the second drip devices 20 is moved into the cleaning liquid container 7, and the flow path of all the second drip devices 20 is filled with the washing liquid. (Refer to Figure 10D). Then, the lock device 33 is opened, and the three-way stopcock 23 of any of the intermediate drip devices 20b is set to the first position. Thereby, the chemical liquid in the chemical solution container 6 connected to the intermediate drip device 20b flows out to the infusion line (see FIG. 10E). In other words, the chemical solution is delivered to the flow path in the second drip device 20, the flow path on the downstream side of the three-way stopcock 13 in the first drip device 10, and the flow path in the main infusion set 30. The body of the patient.

When the supply of the chemical liquid of the chemical liquid container 6 is completed, the three-way stopcock 23 of the intermediate drip device 20b connected to the chemical liquid container 6 is set to the second position (see FIG. 10F). Then, the washing liquid flows into the infusion line to wash the infusion line.

Then, the same operation is repeated until the liquid medicine in all the chemical liquid containers 6 is delivered. In other words, the three-way stopcock 23 of the intermediate drip device 20b connected to the unfilled chemical solution container 6 is set to the first position. Thereby, the chemical liquid in the chemical solution container 6 connected to the intermediate drip device 20b flows out to the infusion line (see FIG. 10G). In other words, the chemical solution is delivered to the flow path in the second drip device 20, the flow path on the downstream side of the three-way stopcock 13 in the first drip device 10, and the flow path in the main infusion set 30. The body of the patient. Then, in the case of the chemical solution container 6 in which the unfilled chemical solution remains, the infusion line is cleaned by the above operation.

When the delivery of the liquid medicine of the last chemical solution container 6 is completed, the above-described infusion line is cleaned, and after the patient pulls out the puncture needle 34 and closes the lid, the infusion set 1 is discarded in this manner. At this time, any part of the infusion set 1 is not removed, and the positions of the three-way stopcocks 13, 23 are not changed. Thus, the infusion line including the side injection passage used is closed from the outside. Therefore, it is possible to prevent the remaining liquid from leaking to the outside.

<3-3. Third use method > Continue, the third method of using the infusion set 1 will be described. The third method of use is similar to the second method of use, and the main difference is that the infusion solution in the infusion container 5 is used as a point of the washing liquid. Therefore, in the third method of use, it is not necessary to use the cleaning liquid container 7. Hereinafter, it will be specifically described.

In the present method, first, the first drip device 10, the second drip device 20, the main infusion set 30, the infusion container 5, and the drug solution container 6 are prepared. The chemical liquid container 6 is prepared in accordance with the number of doses required to be administered, and the second drip tool 20 is one for the number of preparation liquid chemical containers 6. Here, the case where the two chemical liquid containers 6 are used will be described as an example.

First, similarly to the second method of use, the first drip tool 10, the second drip tool 20, and the main infusion set 30 are connected to each other to form a state of FIG. 10A. In other words, after the devices 10, 20, and 30 are connected, the lock device 33 is closed, and the three-way stopcock 13 of the first drip tool 10 is set to the first position, and all the second drip devices 20 are placed. The three-way stopcock 23 is set to the second position.

In the same manner as in the second method of use, the infusion container 5 and the drug solution container 6 are hung on the drip hanger. Next, in this state, the puncture needle 11 of the first drip tool 10 pierces the rubber plug 521 of the infusion container 5. Further, among all the second drip devices 20, the chemical liquid container 6 is housed in the exposure preventing cover 26 of the intermediate drip device 20b and sealed. Next, the rubber pegs 621 of the chemical solution container 6 are respectively pierced by the puncture needles 21 of all the intermediate drip devices 20b. Further, the puncture needle 21 of the end drip device 20a pierces the rubber plug 521 of the infusion container 5 (see Fig. 11). Further, as shown in Fig. 11, an object in which the exposure preventing cover 26 is omitted may be used as the tip drip device 20a.

As shown in Fig. 11, the infusion container 5 used here is provided with at least a discharge member 52 and a rubber stopper 521 having a size in which only two puncture needles are discharged. Further, in Fig. 11, for convenience of explanation, the downstream side tube 24 of the tip drip device 20a is longer than the intermediate drip device 20b, and the three-way stopcock 23 or the puncture needle 21 of the end drip device 20a is small, however In fact, the same as the intermediate drip device 20b is used.

The processing after this is the same as the second method of use except that the role of the cleaning liquid container 7 is replaced by the infusion container 5. Therefore, the following description will be briefly made to continue the opening of the lock 33, and the infusion of the infusion container 5 is filled in the main infusion path, and the puncture needle 34 at the end of the main infusion set 30 is inserted into the patient.

Then, the lock 33 is brought into a closed state, the three-way stopcock 13 of the first drip tool 10 is set to the second position, and the three-way stopcock 23 of the end drip tool 20a is set to the first position. Next, in this state, the drip tray 32 is pumped. Thereby, the air in the flow path of all the second drip devices 20 is moved into the infusion container 5, and the flow paths of all the second drip devices 20 are filled with the infusion liquid. Then, the lock device 33 is opened, and the three-way stopcock 23 of any of the intermediate drip devices 20b is set to the first position. Thereby, the chemical liquid in the chemical liquid container 6 connected to the intermediate drip device 20b flows out to the infusion line, and the chemical liquid is delivered to the inside of the patient.

When the liquid medicine of the first chemical solution container 6 is completed, the three-way stopcock 23 of the intermediate drip device 20b connected to the chemical liquid container 6 is set to the second position, and the infusion liquid flows from the infusion container 5 into the infusion line. Inside, thus cleaning the infusion line. Then, the same operation is repeated until the liquid medicine in all the chemical liquid containers 6 is delivered. When the liquid medicine of the last chemical solution container 6 is delivered, the infusion tube is cleaned by the infusion in the infusion container 5, the puncture needle 34 is pulled out from the patient, and the lid is closed. The infusion set 1 is discarded directly. Therefore, it is possible to prevent the remaining liquid from leaking to the outside.

<4. [Modifications] The above description of the embodiments of the present invention has been made. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, the following changes can be made. Further, the gist of the following modifications can be appropriately combined.

<4-1> The first drip tool 10 and the second drip device 20 are not detachable by the connector 25, and the connector 25 can be omitted. For example, the end portion 24b of the downstream side tube 24 of the second drip tool 20 may be press-fitted and fused to the third branching portion 133 of the first drip tool 10, and the like, and it may be difficult to be installed. Removed or cannot be removed. The same applies to the connection of the second drip tool 20 after the second. In addition, the puncture needle 31 may be omitted from the main infusion set 30, and the downstream side tube 14 of the first drip tool 10 and the tube 35 on the upstream side of the drip tube 32 may be integrally formed.

<4-2> In the above embodiment, the female connector 25 is connected to the end portion 24b of the downstream side tube 24 of the second drip tool 20, and the third-way stopcock 13 and 23 connected to the space The three-part 133, 233 is a male connector (connection port). However, the male connector may be disposed on the end portion 24b side of the downstream side tube 24, and the female connector (connection port portion) may be disposed on the third branching portion 133, 233 side of the three-way stopcocks 13, 23. .

<4-3> In the above embodiment, the three-way stopcock 13 is capable of switching only the first position and the second position. However, in addition to the first position and the second position, the first branching portion 131 and the third branching portion 133 may be switched, and the first branching portion 131 and the second branching portion may be configured. At least one of the state in which the portion 132 and the third branching portion 133 are all in communication. Even in the case of the infusion set having the three-way stopcock 13 and the like, the above-described excellent effects can be achieved by adopting the first to third methods of use.

In addition to the first position and the second position, the three-way stopcock 23 may be configured to be in a state in which the first branching portion 231 and the third branching portion 233 are in communication, and to make the first At least one of the state in which the branching unit 231, the second branching unit 232, and the third branching unit 233 are all in communication. Even in the case of the infusion set having the three-way stopcock 23 of the above, the above-described excellent effects can be achieved by adopting the first to third methods of use.

1‧‧‧Infusion set
10‧‧‧1st drip
11, 21, 31, 34‧‧‧ needles
12‧‧‧Upstream side tube
Ends 12a, 12b, 14a, 14b, 22a, 22b, 24a, 24b, 133a, 233a, 260a‧‧
13‧‧‧Three-way stopcock
14‧‧‧ downstream side tube
20‧‧‧2nd drip
22‧‧‧Upstream side tube
23‧‧‧Three-way stopcock
24‧‧‧ downstream side tube
25‧‧‧Connecting parts
26‧‧‧Exposure prevention cover
30‧‧‧Main infusion set
32‧‧‧ drip tube
33‧‧‧Locks
35‧‧‧ tube
51, 61‧‧‧ container body
110, 210‧‧‧ Exterior body
120, 220‧‧‧ Turntable components
130‧‧‧Central Department
131, 231‧‧1 Division 1
132, 232‧‧‧2nd Division
133, 233‧‧ Third Division
134, 234‧‧ ‧ stop
135, 235, 253‧‧‧ 缧
233‧‧ Third Division
252a‧‧‧End
252b‧‧‧The other end
260‧‧‧ cover body
263‧‧‧Connecting Department
264‧‧‧Opening and closing agency
266‧‧‧Sliding parts
267‧‧‧ Area
511, 611‧‧‧ internal space
512, 612, 262‧‧‧ hanging holes
521, 621‧‧‧ rubber bolts
622‧‧‧ inclined section

Fig. 1 is a view showing the overall configuration of an infusion set according to an embodiment of the present invention. Fig. 2 is a view showing the configuration of the first drip tool. Fig. 3 is a view showing the configuration of the second drip tool. Figure 4 is a diagram showing the composition of the main infusion set. Figure 5 is a side view of the infusion container. Figure 6 is a side view of the drug solution container. Figure 7 is a side view of the exposure prevention cover. Fig. 8 is a side view showing a state in which the chemical liquid container is set in the exposure preventing cover of Fig. 7. Fig. 9A is a view showing an example of a method of using the infusion set. Fig. 9B is another diagram illustrating the same method of use as Fig. 9A. Fig. 9C is another view showing the other method of use similar to Fig. 9A. Fig. 9D is another view showing the other method of use similar to Fig. 9A. Fig. 9E is another view showing the other method of use similar to Fig. 9A. Fig. 9F is another view showing the other method of use similar to Fig. 9A. Fig. 10A is a view showing another example of the method of using the infusion set. Fig. 10B is another diagram illustrating the same method of use as that of Fig. 10A. Fig. 10C is another view showing the other method of use similar to Fig. 10A. Fig. 10D is another view showing the other method of use similar to Fig. 10A. Fig. 10E is another view showing the other method of use similar to Fig. 10A. Fig. 10F is another view showing the other method of use similar to Fig. 10A. Fig. 10G is another view showing the other method of use similar to Fig. 10A. Fig. 11 is a view showing another example of the method of using the infusion set.

1‧‧‧Infusion set

10‧‧‧1st drip

11‧‧‧Puncture needle

12‧‧‧Upstream side tube

Ends 12a, 12b, 14a, 14b, 22a, 22b, 24a, 24b‧‧‧

13‧‧‧Three-way stopcock

133‧‧ Third Division

14‧‧‧ downstream side tube

20‧‧‧2nd drip

21‧‧‧Puncture needle

22‧‧‧Upstream side tube

23‧‧‧Three-way stopcock

233‧‧ Third Division

24‧‧‧ downstream side tube

25‧‧‧Connecting parts

30‧‧‧Main infusion set

31‧‧‧Puncture needle

32‧‧‧ drip tube

33‧‧‧Locks

34‧‧‧Puncture needle

35‧‧‧ tube

Claims (16)

An infusion set comprising an infusion set comprising a first drip device and a second drip device; wherein the first drip device has: a first upstream side tube having a first end and a second end; and a first downstream The side pipe has a first end and a second end; and the first three-way stopcock is connected to the first end of the first upstream side pipe and the first end of the first downstream side pipe, and has a first connection The mouth portion is only capable of being performed between a first position in which the first upstream side pipe communicates with the first downstream side pipe and a second position in which the first downstream side pipe communicates with the first connection port portion. The second drip device has: a second upstream side tube having a first end and a second end; a second downstream side tube having a first end and a second end; and a second three-way stopcock connected to the first The first end of the upstream side pipe and the first end of the second downstream side pipe have a second connection port portion, and only the second upstream side pipe can communicate with the second downstream side pipe. Switching between the first position and the second position in which the second downstream side tube communicates with the second connection port portion; The second end of the second downstream side pipe is configured to be connectable to or connect to the first connection port portion so that the first connection port portion communicates with the second downstream side pipe. The infusion set according to claim 1, wherein the second drip device further has a connecting member that is detachably connected to the first connecting port portion in the second end of the second downstream side tube . The infusion set according to claim 2, wherein the first connection port portion and the second connection port portion have the same shape. The infusion set according to claim 2 or 3, wherein the first connection port portion and the connector are connected to each other by a Luer lock type. The infusion set according to claim 1, wherein the second end of the second downstream side tube is configured such that the first connection port portion communicates with the second downstream side tube 1 The connection port is difficult to remove or cannot be connected to the first connection port. The infusion set according to any one of claims 1 to 5, wherein the first drip device is a first needle further provided in the second end of the first upstream side tube, and the first needle can be stabbed The infusion container is passed through to the infusion container to communicate with the first upstream side tube. The infusion set according to any one of claims 1 to 6, wherein the second drip device further has a second needle in the second end of the second upstream tube, and the second needle can pierce The chemical solution container allows the chemical solution container to communicate with the second upstream side tube. The infusion set according to claim 7, wherein the second drip device further includes a bag in which the second needle is housed, and the chemical liquid container can be accommodated, and the medical liquid container can be sealed. The infusion set according to any one of claims 1 to 8, wherein the second end of the first downstream side tube is an open end. The infusion set according to any one of claims 1 to 9, further comprising a main infusion set configured to be connected to or connectable to the second end of the first downstream side tube, Moreover, there are a drip tube, a lock and a puncture needle in order from upstream to downstream. A method of using an infusion set, which is the method of using the infusion set described in claim 10, wherein the method of using the second upstream side tube is connected to the infusion container, the first a three-way stopcock is provided in the first position to open the lock; and the infusion from the infusion container is filled in the main infusion set that is connected to the first drip tool and the first drip tool The second end of the second downstream side pipe is the second drip device connected to the first connecting port portion, and the second end of the second upstream side pipe is connected to the chemical liquid container. In a state in which the lock is closed, the first three-way stopcock is in the second position, and the second three-way stop is in the first position, the drip tube is pumped. And the step of moving the air in the second drip device into the chemical liquid container; and opening the lock device to deliver the chemical liquid from the chemical liquid container. The method of using the infusion set according to claim 11, further comprising the step of delivering the liquid medicine from the new liquid medicine container using the new second dropping device; the step comprising: filling the a front end of the syringe for the cleaning liquid is connected to the second connection port of the second drip device; a step of washing the inside of the infusion set by the cleaning liquid from the syringe; and the second connection The mouth portion is detached from the syringe, and the second end of the second downstream side tube of the new second drip tool is additionally connected to the second joint port portion; and the new second drip tool is a step of connecting the second end of the second upstream side tube to the new chemical liquid container; the lock is closed, and the first three-way stop is the second position and the previous second drip device When the second three-way stopcock is in the second position and the second three-way stopcock of the new second drip device is in the first position, the drip tube is pumped and the new one is The second drop inside the appliance The air moving to a new step of chemical inside of the vessel; to be open with the locking projection from the preceding stage of the new chemical of the chemical liquid from the container. The method of claim 12, further comprising the step of: repeating the steps of performing the step of delivering the drug solution from the new drug solution container. A method of using an infusion set according to claim 10, wherein the method of using the infusion set according to claim 10, wherein the second connection port of the one of the second drip devices is connected to the other one In the second end of the second downstream side tube of the two-drip tool, the second drop device in the front is connected to at least one of the second drip devices, and the first connecting port is connected. In the second end of the second downstream side tube of the first drop device, the second end of the first downstream side tube is the infusion connected to the upstream end of the main infusion set a step of arranging the second drop end of the second upstream side tube to the cleaning liquid container; and the second end other than the end drip tool; At least one intermediate drip device of the drip device, wherein the second end of the second upstream side tube is connected to the chemical liquid container; and the second end of the first upstream side tube is connected to the infusion container The first three-way stopcock is in the first position, the lock is in an open state, and the infusion solution from the infusion container is filled with the first drip device and the inside of the main infusion set; In the second position, the second three-way stopcock of the intermediate drip device is the second position, and the second three-way stopcock of the distal drip device is the aforementioned In the state of the first position, the step of pumping the drip tube to move the air in the second drip device to the inside of the washing liquid container; and opening the lock device to at least one of the intermediate drip devices The second three-way stopcock is a first position to deliver a chemical solution from the chemical solution container; and the intermediate portion of the intermediate drip device that has been connected to the drug solution container that has been delivered 2 The three-way stopcock is set to the second position, and the washing liquid is poured into the inside of the infusion set. A method of using an infusion set, which is the method of using the infusion set according to claim 10, comprising: connecting the second connection port of the one of the second drip devices to the other second spot In the second end of the second downstream side tube of the tool, the second drop device is connected to at least one of the second drip devices, and the first connecting port portion is connected to the front end The second end of the second downstream side pipe of the second drip tool and the second end of the first downstream side pipe are the infusion set that is connected to the upstream end of the main infusion set a step of connecting the second end of the second upstream tube to the infusion container, and at least 1 of the second drip device other than the end drip device, to the end drip device of the second drip device connected to the end The intermediate drip device is configured to connect the second end of the second upstream side tube to the chemical liquid container; and the second end of the first upstream side tube is connected to the infusion container and the first three-way The plugging system is in the first position, the locker is in an open state, and the infusion from the infusion container is filled in the first drip device and the inside of the main infusion set; the lock is closed, and the first one is The third-way stopcock is the second position, and the second three-way stopcock of the intermediate drip device is the second position, and the second three-way stopcock of the distal drip device is in the first position. And pumping the drip tube to move the air in the second drip device to the inside of the infusion container; and opening the lock to set the second three-way stopcock of at least one of the intermediate drip devices a step of delivering the chemical solution from the chemical solution container at the first position; and the second three-way stopcock of the intermediate drip device connected to the drug solution container that has been delivered is the second The step of flowing the infusion into the interior of the infusion set. The method of using the infusion set according to claim 14 or 15, further comprising: setting the second three-way stopcock of the intermediate drip device connected to the drug solution container that has not been delivered The first position is a step of delivering a chemical solution from the chemical solution container.