JP2020146231A - Flow channel switching member and liquid feeding device - Google Patents

Abstract

To provide a flow channel switching member and a liquid feeding device, allowing for suppression of switching error of a liquid feeding state.SOLUTION: The flow channel switching member includes: a housing comprising a first communication port, a second communication port and a third communication port; a connector arrangement portion in which a connector is detachably arranged; and a movable member which is held by the housing in a movable manner, is moved to a first position by arranging the connector on the connector arrangement portion, and is moved to the second position by detaching the connector from the connector arrangement portion. The movable member comprises: a first communication path causing the first communication port and the third communication port to communicate with each other on the first position; a second closing unit closing the second communication port on the first position; a second communication path causing the second communication port and the third communication port to communicate with each other, on the second position; and a first closing unit closing the first communication port on the second position.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a flow path switching member and a liquid feeding device.

A liquid feeding device that forms a liquid feeding line that sends a liquid such as a chemical solution into the body is known. The liquid feeding line may have a main line that sends the first liquid into the body and a sub line that sends the second liquid to the main line. In that case, the liquid feeding device includes a first container having a first storage space for storing the first liquid, a second container having a second storage space for storing the second liquid, and a first communication port and a second communication port. A flow path switching member having a port and a third communication port, a first flow path member having a first flow path for communicating the first accommodation space and the first communication port, and a second accommodation space and a second communication port. A second flow path member having a second flow path for communicating with each other and a third flow path member having a third flow path communicating with the third communication port, and the second flow path member is detachably connected to each other. Has a pair of connectors. The main line is formed by the first container, the first flow path member, the flow path switching member, and the third flow path member. A subline is formed by the second container, the second flow path member, and the flow path switching member. By exchanging the first container, two or more kinds of first liquids can be sequentially sent. By exchanging the second container, two or more kinds of second liquids can be sequentially sent.

When, for example, an anticancer drug is fed using such a liquid feeding device, a first liquid (for example, physiological saline solution, an antiemetic agent, etc.) and a second liquid (for example, one or more kinds of anticancer drugs, etc.) are fed. ), It is necessary to selectively perform the liquid transfer in an appropriate order. That is, it is necessary to definitely switch the liquid feeding state between the state in which only the first liquid is fed and the state in which only the second liquid is fed. For example, Patent Document 1 describes a liquid feeding device in which a flow path switching member is composed of a three-way stopcock. By operating the three-way stopcock, the liquid feeding state is switched between the state in which only the first liquid is fed and the state in which only the second liquid is fed.

Japanese Unexamined Patent Publication No. 2014-30489

However, when a liquid feeding device as described in Patent Document 1 is used, there is a possibility that the liquid feeding state may not be appropriately switched by forgetting to operate the three-way stopcock. It is desired to suppress the mistake of switching the liquid feeding state.

In view of these points, an object of the present disclosure is to provide a flow path switching member and a liquid feeding device capable of suppressing an error in switching a liquid feeding state.

The flow path switching member as the first aspect of the present invention includes a housing provided with a first communication port, a second communication port, and a third communication port, a connector arrangement portion in which a connector is removably arranged, and the housing. It has a movable member that is held movably and moves to a first position by arranging the connector on the connector arrangement portion, and moves to a second position by removing the connector from the connector arrangement portion. The movable member has a first communication passage that communicates the first communication port and the third communication port with each other at the first position, and a second closing portion that closes the second communication port at the first position. The second position has a second passage that allows the second communication port and the third communication port to communicate with each other, and a first closing portion that closes the first communication port at the second position.

In one embodiment of the present invention, the flow path switching member includes a fitting portion in which the housing is detachably fitted to the connector arrangement portion and the connector by arranging the connector in the connector arrangement portion. The movable member is pressed so that the movable member at the second position is moved to the first position by the connector due to the arrangement of the connector on the connector arrangement portion. An urging member is provided between the housing and the movable member to urge the movable member so that the movable member at the first position moves to the second position.

As one embodiment of the present invention, the flow path switching member has a snap fitting portion in which the fitting portion snap-fits with the connector by disposing the connector in the connector arrangement portion.

In one embodiment of the present invention, the flow path switching member is a guide portion in which the housing guides the movable member so that the movable member slides between the first position and the second position. Has.

The liquid feeding device as the second aspect of the present invention includes a flow path switching member having a first communication port, a second communication port, and a third communication port, and a bottle needle connected to a first container for accommodating the first liquid. A first flow path member including a first flow path for communicating the bottle needle and the first communication port, and a connector for connecting to a second container for accommodating a second liquid, and the connector and the first communication port. A housing having a second flow path member having a second flow path for communicating with the two communication ports, and the flow path switching member including the first communication port, the second communication port, and the third communication port. And, the connector arrangement portion in which the connector is removably arranged and the housing are movably held, and the connector is moved to the first position by the arrangement of the connector in the connector arrangement portion, and the connector arrangement portion is used. The movable member has a movable member that moves to a second position by removing the connector, and the movable member has a first communication passage that communicates the first communication port and the third communication port with each other at the first position. A second closing portion that closes the second communication port at the first position, a second communication passage that connects the second communication port and the third communication port to each other at the second position, and the second communication port. It has a first closing portion that closes the first communication port at the position.

The liquid feeding device as the third aspect of the present invention includes a first container having a first storage space for storing the first liquid, a second container having a second storage space for storing the second liquid, and a first container. A flow path switching member having a communication port, a second communication port, and a third communication port, a first flow path member including a first flow path for communicating the first accommodation space and the first communication port, and the first flow path member. It has a second flow path member provided with a second flow path for communicating the two accommodation spaces and the second communication port, and has a pair of connectors for which the second flow path member is detachably connected to each other. The flow path switching member includes a first connector that is one of a housing having the first communication port, the second communication port, and the third communication port, and the pair of connectors located on the side of the second communication port. The detachably arranged connector arrangement portion and the housing are movably held and moved to the first position by the arrangement of the first connector in the connector arrangement portion, and the first position from the connector arrangement portion. A first communication passage having a movable member that moves to a second position by removing one connector, and the movable member communicating the first communication port and the third communication port with each other at the first position. A second closing portion that closes the second communication port at the first position, a second communication passage that communicates the second communication port and the third communication port with each other at the second position, and the second position. It has a first closing portion that closes the first communication port.

According to the present disclosure, it is possible to provide a flow path switching member and a liquid feeding device capable of suppressing an error in switching a liquid feeding state.

It is an external view which shows the liquid feeding apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the 1st state of the flow path switching member of the liquid feeding apparatus shown in FIG. It is a perspective view which shows the 2nd state of the flow path switching member of the liquid feeding apparatus shown in FIG. FIG. 2 is a sectional view taken along the line AA of FIG. FIG. 3 is a sectional view taken along the line AA of FIG.

Hereinafter, the flow path switching member and the liquid feeding device according to the embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the liquid feeding device 1 according to the present embodiment has a first container 2, a second container 3, a flow path switching member 4, a first flow path member 5, and a second flow path according to the present embodiment. It has a member 6 and a third flow path member 7. The first container 2 has a first storage space 2b that stores the first liquid 2a. The second container 3 has a second storage space 3b for storing the second liquid 3a. The flow path switching member 4 has a first communication port 4a, a second communication port 4b, and a third communication port 4c. The first flow path member 5 has a first flow path 5a that communicates the first accommodation space 2b and the first communication port 4a. The second flow path member 6 has a second flow path 6a that communicates the second accommodation space 3b and the second communication port 4b. The third flow path member 7 has a third flow path 7a that communicates with the third communication port 4c. The main line is formed by the first container 2, the first flow path member 5, the flow path switching member 4, and the third flow path member 7. A subline is formed by the second container 3, the second flow path member 6, and the flow path switching member 4.

The first liquid 2a may be, for example, a physiological saline solution or an antiemetic agent. The first container 2 may be, for example, an infusion bag. The first container 2 may be replaceable with another first container 2. In this case, by exchanging the first container 2, two or more kinds of first liquids 2a can be sequentially sent. For example, after the first container 2 containing the physiological saline solution as the first liquid 2a is connected to the first flow path member 5 and the liquid is sent, it is placed in another first container 2 containing the antiemetic agent as the first liquid 2a. You may replace it.

The second liquid 3a may be, for example, an anticancer agent. The second container 3 may be, for example, an infusion bag. The second container 3 may be replaceable with another second container 3. In this case, by exchanging the second container 3, two or more kinds of second liquids 3a can be sequentially sent. For example, after the second container 3 containing the anticancer agent as the second liquid 3a is connected to the second flow path member 6 and fed, the other second container 3 containing another type of anticancer agent as the second liquid 3a. May be replaced with.

The first flow path member 5 is composed of a bottle needle 8 and a tube 9. The bottle needle 8 is connected to the first container 2. The upstream end of the tube 9 is connected to the bottle needle 8. The downstream end of the tube 9 is connected to the first connecting portion 10a of the flow path switching member 4. The first connecting portion 10a has a first communication port 4a.

The second flow path member 6 has a first connector 11a and a second connector 11b (hereinafter, also referred to as a pair of connectors 11a and 11b) that are detachably connected to each other. More specifically, the second flow path member 6 is composed of a second connector 11b integrally formed with the second container 3, a first connector 11a, and a tube 12. The upstream end of the tube 12 is connected to the first connector 11a. The downstream end of the tube 12 is connected to the second connecting portion 10b of the flow path switching member 4. The second connecting portion 10b has a second connecting port 4b.

The third flow path member 7 is composed of a tube 13, a drip tube 14, a tube 15, and a connector 16. A clamp 17 for adjusting the flow rate is attached to the tube 15. The upstream end of the tube 13 is connected to the third connecting portion 10c of the flow path switching member 4. The third connecting portion 10c has a third connecting port 4c. The downstream end of the tube 13 is connected to the upstream end of the drip tube 14. The upstream end of the tube 15 is connected to the downstream end of the drip tube 14. The downstream end of the tube 15 is connected to the connector 16. The connector 16 is connected to a connector (not shown) provided at the upstream end of a fourth flow path member (not shown) having a flow path communicating with the body of a patient or the like. The fourth flow path member is composed of, for example, a catheter.

When, for example, an anticancer drug is fed using the liquid feeding device 1, the liquid feeding of the first liquid 2a (for example, physiological saline, antiemetic agent, etc.) and the second liquid 3a (for example, one or more kinds of anticancer agents, etc.) ), It is necessary to selectively perform the liquid transfer in an appropriate order. That is, it is necessary to definitely switch the liquid feeding state between the state in which only the first liquid 2a is fed and the state in which only the second liquid 3a is fed. In the present embodiment, by using the flow path switching member 4, it is possible to suppress an error in switching the liquid feeding state.

As shown in FIGS. 2 to 5, the flow path switching member 4 of the present embodiment includes a housing 18, a connector arranging portion 19, and a movable member 20. The housing 18 has a first connecting portion 10a including a first connecting port 4a, a second connecting portion 10b having a second connecting port 4b, and a third connecting portion 10c including a third connecting port 4c. The first connector 11a is removably arranged in the connector arrangement portion 19. The movable member 20 is movably held in the housing 18, moved to the first position by arranging the first connector 11a on the connector arranging portion 19, and is moved to the first position by removing the first connector 11a from the connector arranging portion 19. Move to 2 positions. The movable member 20 has a first communication passage 21a that communicates the first communication port 4a and the third communication port 4c with each other at the first position, and a second closing portion 22b that closes the second communication port 4b at the first position. Have. Further, the movable member 20 has a second passage 21b that connects the second communication port 4b and the third communication port 4c to each other at the second position, and a first closing portion that closes the first communication port 4a at the second position. It has 22a and.

Therefore, the state of the flow path switching member 4 is the first state in which the first connector 11a is arranged in the connector arrangement portion 19, the movable member 20 is in the first position, and only the first communication port 4a communicates with the third communication port 4c. And the second state in which the first connector 11a is removed from the connector arrangement portion 19 and the movable member 20 is in the second position and only the second flow path 4b communicates with the third flow path 4c.

The housing 18 has a connector arranging portion 19 and a fitting portion 23 that is releasably fitted to the first connector 11a by arranging the first connector 11a on the connector arranging portion 19. The fitting portion 23 has a snap fitting portion that snap-fits with the first connector 11a by arranging the first connector 11a on the connector arranging portion 19. The fitting portion 23 is a pressing fitting portion that is releasably pressed and fitted with the first connector 11a by arranging the first connector 11a on the connector arranging portion 19 instead of the snap fitting portion or in addition to the snap fitting portion. May have. The first connector 11a has a cylindrical outermost peripheral wall 11a1. The snap fitting portion is composed of a pair of convex portions 23a facing each other. The pair of convex portions 23a snap-fit to the outermost outer peripheral wall 11a1 of the first connector 11a by arranging the first connector 11a on the connector arranging portion 19.

The movable member 20 has a pressed portion 24 that is pressed by the first connector 11a so that the movable member 20 at the second position moves to the first position by arranging the first connector 11a on the connector arranging portion 19. .. Between the housing 18 and the movable member 20, an urging member 25 that urges the movable member 20 so that the movable member 20 at the first position moves to the second position is provided. The urging member 25 is composed of a coiled spring, but is not limited to this, and may be composed of a spring other than the coiled spring or a member other than the spring such as a magnet. The housing 18 has a guide portion 26 that guides the movable member 20 so that the movable member 20 slides between the first position and the second position.

The housing 18 has a front wall 27, a rear wall 28, an upper wall 29, a lower wall 30, a left wall 31 and a right wall 32. The front is the moving direction (that is, the left direction in FIG. 4) when the movable member 20 slides from the first position to the second position, and is the opposite direction to the rear. The upper direction is the direction from the third communication port 4c to the first communication port 4a, and the lower direction is the opposite direction. The left-right direction is a direction perpendicular to both the front-back direction and the up-down direction. The front wall 27 and the rear wall 28 each have a flat plate shape extending perpendicularly to the front-rear direction and face each other in the front-rear direction. The upper wall 29 and the lower wall 30 each have a flat plate shape extending perpendicularly to the vertical direction and face each other in the vertical direction. The left wall 31 and the right wall 32 each have a flat plate shape extending perpendicularly to the left-right direction and face each other in the left-right direction.

The front wall 27 and the rear wall 28 have an upper end edge extending in the left-right direction, a lower end edge extending in the left-right direction, a left side edge extending in the vertical direction, and a right edge extending in the vertical direction, respectively. Has. The upper wall 29 connects the upper end edge of the front wall 27 and the upper end edge of the rear wall 28. The lower wall 30 connects the lower end edge of the front wall 27 and the lower end edge of the rear wall 28. The left wall 31 connects the left edge of the upper wall 29 and the left edge of the lower wall 30. The right wall 32 connects the right edge of the upper wall 29 and the right edge of the lower wall 30.

The upper wall 29 has a semi-elliptical notch 29a that opens to the left. The lower wall 30 has a semi-circular mounting portion 30a located directly below the notch portion 29a. The left wall 31 has an intermittent portion 31a located between the notch portion 29a and the mounting portion 30a. The left wall 31 is composed of an intermittent portion 31a, a first wall portion 31b located in front of the intermittent portion 31a, and a second wall portion 31c located behind the intermittent portion 31a.

The housing 18 has a curved plate-shaped front connecting wall 33 that connects the front end portion of the notch portion 29a and the front end portion of the mounting portion 30a, and a curved plate-shaped rear hanging portion that hangs down from the rear end portion of the notch portion 29a. It has a wall 34 and. A gap 35 is formed between the lower end surface of the rear hanging wall 34 and the upper surface of the lower wall 30. One of the pair of convex portions 23a constituting the snap fitting portion is located on the front connecting wall 33, and the other of the pair of convex portions 23a is located on the rear hanging wall 34. The connector arranging portion 19 is composed of a notch portion 29a, a front connecting wall 33, a rear hanging wall 34, and a mounting portion 30a. The guide portion 26 is composed of an upper wall 29, a lower wall 30, a left wall 31 and a right wall 32.

The movable member 20 has a rectangular parallelepiped base portion 20a and an extension portion 20b extending rearward from the lower right portion on the rear surface of the base portion 20a. The base portion 20a has a first continuous passage 21a, a second continuous passage 21b, a first closed portion 22a, and a second closed portion 22b. The upper end of the first passage 21a, the upper end of the second passage 21b, the first closing portion 22a and the second closing portion 22b are located on the upper surface of the base portion 20a. The lower end of the first passage 21a and the lower end of the second passage 21b are located on the lower surface of the base 20a. The upper surface of the base 20a is guided to the upper wall 29, the lower surface of the base 20a is guided to the lower wall 30, the left surface of the base 20a is guided to the first wall 31b of the left wall 31, and the right surface of the base 20a is the right wall 32. The movable member 20 slides in the front-rear direction with respect to the housing 18 by being guided by.

In the second state, the extension portion 20b has a gap 36 between the right edge of the front connecting wall 33 and the right wall 32 and a gap 35 between the lower end surface of the rear hanging wall 34 and the upper surface of the lower wall 30 from the base portion 20a. It extends backwards through. The extension portion 20b has a pressed portion 24. The pressed portion 24 is composed of a tapered surface that is inclined to the left from the front to the rear. In the second state, the pressed portion 24 protrudes into the connector arranging portion 19. The extension portion 20b has a cylindrical recess located on the rear surface of the extension portion 20b and extending in the front-rear direction. One end of the urging member 25 is located on the end surface of the recess. The other end of the urging member 25 is located on the front surface of the rear wall 28.

The housing 18 is composed of a plurality of integrally molded members. The movable member 20 is composed of one integrally molded member, but may be composed of a plurality of integrally molded members. The housing 18 and the movable member 20 may each be made of synthetic resin, but the present invention is not limited to this.

When the user removes the first connector 11a from the connector arranging portion 19 in the first state shown in FIGS. 2 and 4, the movable member 20 is advanced by the urging member 25, and the flow path switching member 4 is moved to FIG. And the second state shown in FIG. Further, when the user arranges the first connector 11a in the connector arrangement portion 19 in the second state shown in FIGS. 3 and 5, the outermost peripheral wall 11a1 of the first connector 11a that moves to the right with this arrangement. Presses the pressed portion 24 backward, whereby the movable member 20 retracts, and the flow path switching member 4 is in the first state shown in FIGS. 2 and 4.

According to the liquid feeding device 1, in order to feed the first liquid 2a, it is necessary to arrange the first connector 11a in the connector arranging portion 19 of the flow path switching member 4. This operation ensures that the second container 3 containing the second liquid 3a is not connected to the main line. Further, according to the liquid feeding device 1, in order to feed the second liquid 3a, an operation of removing the first connector 11a from the connector arranging portion 19 of the flow path switching member 4 and connecting the second liquid 3a to the second connector 11b is performed. is necessary. This operation ensures that the flow path switching member 4 is in the second state and the first liquid 2a is not fed. Therefore, according to the liquid feeding device 1, it is possible to suppress an error in switching the liquid feeding state.

Further, according to the liquid feeding device 1, when the second liquid 3a is not fed, the first connector 11a can be arranged in the connector arranging portion 19 of the flow path switching member 4. At this time, since the tip of the first connector 11a is covered with the mounting portion 30a constituting the connector arranging portion 19, the hygienic state of the tip of the first connector 11a can be maintained satisfactorily.

It goes without saying that the above-described embodiment is merely an example of the embodiment of the present invention and can be variously modified without departing from the gist of the invention.

1 Liquid feeding device 2 1st container 2a 1st liquid 2b 1st storage space 3 2nd container 3a 2nd liquid 3b 2nd storage space 4 Flow path switching member 4a 1st communication port 4b 2nd communication port 4c 3rd communication port 5 1st flow path member 5a 1st flow path 6 2nd flow path member 6a 2nd flow path 7 3rd flow path member 7a 3rd flow path 8 Bottle needle 9 Tube 10a 1st connection part 10b 2nd connection part 10c 3 Connecting part 11a First connector 11a1 Outermost outer wall 11b Second connector 12 Tube 13 Tube 14 Drip tube 15 Tube 16 Connector 17 Clemme 18 Housing 19 Connector arrangement part 20 Movable member 20a Base 20b Extension 21a First communication passage 21b Second Communication passage 22a First closed portion 22b Second closed portion 23 Fitting portion 23a Convex portion (snap fitting portion)
24 Pressed part 25 Biasing member 26 Guide part 27 Front wall 28 Rear wall 29 Upper wall 29a Notch part 30 Lower wall 30a Mounting part 31 Left wall 31a Intermittent part 31b First wall part 31c Second wall part 32 Right wall 33 Front connecting wall 34 Houbi wall 35, 36 Gap

Claims (6)

A housing having a first communication port, a second communication port, and a third communication port,
The connector arrangement part where the connector is arranged so that it can be removed,
A movable member that is movably held in the housing, moves to the first position by arranging the connector on the connector arrangement portion, and moves to the second position by removing the connector from the connector arrangement portion. The movable member has a first communication passage that allows the first communication port and the third communication port to communicate with each other at the first position, and a second passage that closes the second communication port at the first position. A closing portion, a second connecting passage that communicates the second communication port and the third communication port with each other at the second position, and a first closing portion that closes the first communication port at the second position. A flow path switching member to have. The housing has a connector arrangement portion and a fitting portion that is releasably fitted to the connector by arrangement of the connector on the connector arrangement portion.
The movable member has a pressed portion that is pressed by the connector so that the movable member at the second position moves to the first position due to the arrangement of the connector on the connector arrangement portion.
The first aspect of the present invention, wherein an urging member for urging the movable member is provided between the housing and the movable member so that the movable member at the first position moves to the second position. Flow path switching member. The flow path switching member according to claim 2, wherein the fitting portion has a snap fitting portion that snap-fits with the connector by arranging the connector on the connector arrangement portion. The housing according to any one of claims 1 to 3, wherein the housing has a guide portion for guiding the movable member so that the movable member slides between the first position and the second position. Flow path switching member. A flow path switching member having a first communication port, a second communication port, and a third communication port,
A first flow path member including a bottle needle connected to a first container for containing a first liquid and a first flow path for communicating the bottle needle and the first communication port.
It has a second flow path member including a connector for connecting to a second container for accommodating the second liquid and a second flow path for communicating the connector and the second communication port.
The flow path switching member
A housing provided with the first communication port, the second communication port, and the third communication port, and
The connector arrangement part where the connector is arranged so that it can be removed, and
A movable member that is movably held in the housing, moves to the first position by arranging the connector on the connector arrangement portion, and moves to the second position by removing the connector from the connector arrangement portion. The movable member has a first communication passage that allows the first communication port and the third communication port to communicate with each other at the first position, and a second passage that closes the second communication port at the first position. A closing portion, a second connecting passage that communicates the second communication port and the third communication port with each other at the second position, and a first closing portion that closes the first communication port at the second position. Liquid delivery device to have. A first container having a first storage space for storing the first liquid,
A second container having a second storage space for storing the second liquid,
A flow path switching member having a first communication port, a second communication port, and a third communication port,
A first flow path member including a first flow path for communicating the first accommodation space and the first communication port, and
It has a second flow path member provided with a second flow path for communicating the second accommodation space and the second communication port, and has a pair of connectors for which the second flow path member is detachably connected to each other. ,
The flow path switching member
A housing provided with the first communication port, the second communication port, and the third communication port, and
A connector arrangement portion in which the first connector, which is one of the pair of connectors located on the side of the second communication port, is removably arranged.
It is movably held in the housing and moves to the first position by arranging the first connector in the connector arrangement portion, and moves to the second position by removing the first connector from the connector arrangement portion. It has a movable member, and the movable member has a first communication passage that communicates the first communication port and the third communication port with each other at the first position, and the second communication port at the first position. The second closing portion to be closed, the second passage for communicating the second communication port and the third communication port with each other at the second position, and the first closing the first communication port at the second position. A liquid feeding device having a closed portion.

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