JP5225858B2 - Temporary fixing member, connector assembly and infusion tube set - Google Patents

Description

  The present invention relates to a temporary fixing member, a connector assembly, and an infusion tube set.

  In a medical device that requires connection of a liquid flow path used for infusion, blood transfusion, nutrient administration, etc., when a liquid such as a liquid medicine, blood, or liquid food is flowed continuously or temporarily, the liquid flow path (circuit) It is necessary to connect and disconnect as necessary. At this time, it is known to attach a connector for connecting liquid flow paths in the middle of the circuit. A typical example of such a connection tool is disclosed in Patent Document 1.

  This connection tool (connector) has a male connector part, a female connector part, a male lock part, and a female lock part. When connecting the connectors having such a configuration, according to the engagement position between the male lock portion of one connector and the female lock portion of the other connector, the connector portions are not yet in a half-locked state ( A state before locking (lock preparation state)) and a locked state in which the connector portions communicate with each other can be taken.

  However, the appearance of the connected connectors is almost the same between the half-locked state and the locked state, so it is difficult to tell whether these connected devices are currently in the half-locked state or the locked state (difficult to distinguish). There was a case. In addition, when the male lock part of one connector and the female lock part of the other connector are repeatedly attached / detached, particularly when the lock state and the half lock state are repeated, the lock state and the half lock state are erroneously recognized. Is also possible.

International Publication 2006/0668211 Pamphlet

  An object of the present invention is to provide a temporary fixing member, a connector assembly, and an infusion tube set that can surely confirm that the first connector and the second connector are in a lock ready state.

In order to achieve the above object, the present invention provides:
A first connector having a male connector part having a male side lumen part, and a first lock part provided so that the connection direction is parallel to the male connector part;
A female connector having a female-side lumen, the male connector being connectable to the female-side lumen, and being provided so that the connection direction of the female connector is parallel to the first connector; A second lock portion that can be connected to each other, and a seal member that is made of an elastic material and maintains the liquid-tightness of these connector portions when the male connector portion and the female connector portion are connected to each other. A temporary fixing member for temporarily fixing the second connector;
A first bent portion bent in an L shape, a second bent portion bent in an L shape in the opposite direction to the first bent portion, and an L shape bent in the same direction as the second bent portion A plate-shaped base having a third bent portion and a fourth bent portion bent in an L shape in the opposite direction to the third bent portion,
In the lock preparation state before the male connector part and the female connector part are close to each other, and the first lock part and the second lock part are close to each other, and the lock parts are in a locked state. , and a holding means for holding the temporarily fixed state where the positional relationship has been temporarily fixed with the second connector and the first connector,
The holding means includes a first holding portion that supports the first connector at two different locations in the temporarily fixed state, and a second holding portion that supports the second connector at two different locations. Have
The temporary fixing member is separated from the first connector and the second connector in the locked state .

  Thereby, it can be visually recognized reliably that the first connector and the second connector are in the lock ready state.

In the temporary fixing member according to the present invention, the base may include a first opening that opens from the vicinity of the first bent portion to the vicinity of the third bent portion, and the fourth bent portion side. A second opening opening at the end is formed,
It is preferable that the first opening portion constitutes the first holding portion, and the second opening portion constitutes the second holding portion.

  Thereby, the first connector and the second connector can be temporarily fixed securely.

In the temporary fixing member of the present invention, in the temporarily fixed state, the locked state cannot be achieved,
The first connector and the second connector in the lock ready state can be brought into the locked state by releasing the temporary fixing of the holding means to at least one of these connectors. Preferably it is.

  Thereby, if the temporary fixing member is installed in the 1st connector and the 2nd connector, it will judge that these connectors are in a lock ready state (temporary fixing state), ie, confirm visually. Can do.

In the temporary fixing member of the present invention, the first connector and the second connector may be configured such that one of the first connector and the second connector is used as the other connector in the lock ready state. By pushing, it will be in the locked state,
By releasing the temporary fixing of the holding means to at least one of the first connector and the second connector, the one connector moves toward the other connector. It is preferable to have a guide portion for guiding the movement of the connector.

  Thereby, the movement of one connector is performed smoothly.

Further, in the temporary fixing member of the present invention, the second connector communicates with the female connector portion, a tube body connecting portion to which the tube body can be connected, and a cap that is detachably attached to the tube body connecting portion. And
It is preferable to have a detachment preventing means for preventing the cap from detaching from the tube connecting portion in the temporarily fixed state.

  Thereby, it is possible to reliably prevent the cap from being detached from the second connector in the temporarily fixed state. Therefore, until the cap is removed, for example, the second connector via the tube connection portion of the second connector. The inside of the connector is prevented from being contaminated.

  In the temporary fixing member of the present invention, it is preferable that the separation preventing means has a small piece located in the vicinity of the top side of the cap.

  Thereby, it is possible to reliably prevent the cap from being detached from the second connector in the temporarily fixed state. Therefore, until the cap is removed, for example, the second connector via the tube connection portion of the second connector. The inside of the connector is prevented from being contaminated.

In order to achieve the above object, the present invention provides:
A first connector having a male connector part having a male side lumen part, and a first lock part provided so that the connection direction is parallel to the male connector part;
A female connector having a female-side lumen, the male connector being connectable to the female-side lumen, and being provided so that the connection direction of the female connector is parallel to the first connector; A second connector having a second locking part connectable to the part;
The first to the connector and the second connector each temporarily fixed, a connector assembly and having a temporary fixing member of the present invention.

  Thereby, it can be visually recognized reliably that the first connector and the second connector are in the lock ready state.

In order to achieve the above object, the present invention provides:
A connector assembly of the present invention;
An infusion tube set comprising a tube connected to the first connector or the second connector.

  Thereby, it can be visually recognized reliably that the first connector and the second connector are in the lock ready state.

FIG. 1 is a perspective view (a diagram showing a temporarily fixed state) showing a first embodiment of a connector assembly (temporary fixing member) of the present invention. FIG. 2 is a perspective view showing a first embodiment of the connector assembly (temporary fixing member) of the present invention (a diagram showing a temporarily fixed state). FIG. 3 is a perspective view showing the connector assembly (temporary fixing member) according to the first embodiment of the present invention (a diagram showing a state where the temporarily fixed state is released). FIG. 4 is an enlarged detailed view of a region [A] surrounded by a one-dot chain line in FIG. FIG. 5 is a perspective view showing the temporary fixing member in FIG. 1 (the same applies to FIGS. 2 and 3). FIG. 6 is a perspective view of the first connector in FIG. FIG. 7 is a perspective view showing the second connector in FIG. 1. FIG. 8 is a diagram (partial longitudinal sectional view) for sequentially illustrating a process in which the first connector and the second connector in FIG. 1 are locked. FIG. 9 is a diagram (partial longitudinal sectional view) for sequentially illustrating the process of releasing the locked state. FIG. 10 is a perspective view showing a valve body (seal member) included in the second connector in FIG. 1. 11 is a cross-sectional view taken along line BB in FIG. 12 is a cross-sectional view taken along the line CC in FIG. FIG. 13 is a plan view showing the infusion tube set of the present invention (a view showing a state before assembly). FIG. 14 is a plan view (showing an assembled state) showing the infusion tube set of the present invention. FIG. 15 is a perspective view showing a second embodiment of the connector assembly (temporary fixing member) of the present invention (a diagram showing a temporarily fixed state). FIG. 16 is a perspective view showing a second embodiment of the connector assembly (temporary fixing member) of the present invention (a diagram showing a state where the temporarily fixed state is released).

  Hereinafter, the temporary fixing member, connector assembly, and infusion tube set of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

<First Embodiment>
1 to 3 are perspective views showing a first embodiment of the connector assembly (temporary fixing member) of the present invention (FIG. 1 (also in FIG. 2) is in a temporarily fixed state, and FIG. 4 shows a state in which the temporarily fixed state is released), FIG. 4 is an enlarged detailed view of a region [A] surrounded by a one-dot chain line in FIG. 1, and FIG. 5 is the same as FIG. 6 is a perspective view of the first connector in FIG. 1, FIG. 7 is a perspective view of the second connector in FIG. 1, and FIG. 8 is in FIG. The figure which shows the process (partial longitudinal cross-sectional view) which shows in order the process in which the 1st connector and 2nd connector of this are in a locked state (partial longitudinal cross-sectional view), FIG. 10 is a perspective view showing a valve body (seal member) included in the second connector in FIG. 1, FIG. 11 is a cross-sectional view taken along line BB in FIG. 1, and FIG. 12 is C in FIG. C line cross-sectional view, FIGS. 13 and 14, respectively, a plan view showing an infusion tube set of the present invention (FIG. 13 shows an assembled pre-state, and FIG. 14 shows the assembled state) is.

  For convenience of explanation, in FIGS. 1 to 7 (the same applies to FIGS. 15 and 16), the longitudinal direction of the temporary fixing member is “x-axis direction”, and the direction perpendicular to the x-direction is “y-axis direction” This is referred to as “z-axis direction”. 10 to 14, the lower side is referred to as “tip” and the upper side is referred to as “base end”.

  An infusion tube set (infusion set) 1 shown in FIGS. 13 and 14 is a device (set) for injecting (administering) an infusion into a living body (patient).

  Examples of the infusion include all liquids that can be administered to a living body, such as drug solutions, correction electrolyte solutions, and physiological saline.

  The type of drug in the drug solution is not particularly limited. For example, sedative, intravenous anesthetic, anesthetic analgesic, local anesthetic, non-depolarizing muscle relaxant, pressor, antihypertensive, coronary vasodilator Any of drugs, diuretics, antiarrhythmic drugs, bronchodilators, hemostatic agents, vitamins, antibiotics, fat emulsions and the like may be used.

  As shown in FIG. 13 (also in FIG. 14), the infusion tube set 1 includes a first infusion tube (first tube assembly) 4b, a second infusion tube (second tube assembly) 4a, And an infusion administration unit 2 for administering the infusion to the patient. Hereinafter, each of these components will be sequentially described.

  Although the 1st infusion tube 4b and the 2nd infusion tube 4a are demonstrated, since the structure of these 1st infusion tubes 4b and the 2nd infusion tube 4a is the same, it is typically the 2nd infusion tube. 4a will be described.

  As shown in FIGS. 13 and 14, the second infusion tube 4 a includes a tube 41, a connector assembly 20 to which one end (lower end in FIG. 13) of the tube 41 can be connected, A sharp needle as a connecting portion provided on the other end (upper end portion in FIG. 13) (base end portion) of the tube 41 and connected to the infusion bag (infusion container) 31 (container) containing the infusion solution And a bottle needle 451 (connecting portion) having a tip.

  As shown in FIGS. 1 to 3, the connector assembly 20 temporarily fixes a connector (second connector) 5A, a connector (first connector) 5A ′, and the first connector and the second connector, respectively. Temporary fixing member 10 to be used.

  As shown in FIG. 1 to FIG. 3 and FIG. 7, the connector 5 </ b> A includes a male connector part (tubular connection part) 6, female connector parts 7 </ b> A and 7 </ b> B, a male lock part 8 </ b> A as a first lock part, Female lock portions 9A and 9B as a lock portion and a valve body (seal member) 51 are provided.

  As shown in FIGS. 1 to 3 and 6, the connector 5 </ b> A ′ includes a male connector portion 6 and a male lock portion 8 </ b> A that are substantially the same as the connector 5 </ b> A, and a tube connection portion 63 to which the tube 41 is connected.

  In the connector assembly 20, the female connector portion 7B of the connector 5A and the male connector portion 6 of the connector 5A ′ can be connected, and the female lock portion 9B of the connector 5A and the male lock portion 8A of the connector 5A ′ can be connected (connectable). (See FIG. 3). FIG. 1 (also in FIG. 2) shows a lock ready state between the connector 5A and the connector 5A ', and FIG. 3 shows a lock state between the connector 5A and the connector 5A'.

First, the connector 5A will be described.
As shown in FIG. 7 (the same applies to FIGS. 1 and 3), the male connector portion 6 includes a hollow male connector portion main body 61 and a tubular portion 62.

  The male connector part main body 61 has the upper board 614 which makes a disk shape. The upper plate 614 is formed with a T-shaped groove in plan view, that is, a straight groove 612 and a groove 613 branched from the middle of the groove 613. The groove 612 is formed along the y axis (in parallel with the y axis). The groove 613 is formed along the positive x-axis direction.

  As shown in FIG. 2, the male connector portion body 61 has a lower plate 615 in the negative z-axis direction of the upper plate 614. The lower plate 615 has a semicircular shape and is disposed concentrically with the upper plate 614.

  The tubular portion 62 is formed so as to protrude from the male connector portion main body 61 in the negative y-axis direction. The tubular part 62 has a liquid flow path (male side lumen part) 621 through which liquid passes and a luer taper part 622.

  The portion of the luer taper portion 622 on the male connector portion main body 61 side may be tapered or straight, or the outer diameter thereof may be set smaller than the inner diameter of the connection port 732 of the lid portion 73. Good. Thus, it is preferable to set the fitting strength between the portion on the male connector portion main body 61 side of the luer taper portion 622 and the lid portion 73 in the locked state smaller than the urging force of the valve body 51. Thus, when the locked state is released, the male connector portion 6 of the connector 5A 'and the female connector portion 7B of the connector 5A can be automatically disconnected.

The liquid channel 621 communicates with the male connector portion main body 61.
The luer taper portion 622 is formed on the outer peripheral portion of the male connector portion 6 on the opening portion 623 side so that the outer diameter gradually decreases in the direction of the opening portion 623.

  Further, the cap 30 is detachably attached to the tubular portion 62. The cap 30 is removed when the connector 5A is connected to the infusion administration unit side connector 26.

  The female connector parts 7A and 7B are parts to which the male connector part 6 of the connector 5A 'can be connected (in this embodiment, the male connector part 6 of the connector 5A' is connected to the female connector part 7B). Since the shape (configuration) of the female connector portion 7A and the female connector portion 7B are substantially the same, the female connector portion 7B will be described below representatively.

  As shown in FIG. 11, the female connector portion 7B includes a female connector portion main body 72 and a tubular lid portion (cap) 73.

  The female connector part main body 72 shown in FIG. 11 has a bottomed cylindrical valve body installation part 721 formed at the tip thereof. The valve body setting portion 721 has a second lumen portion (female side lumen portion) 723 on the inner proximal side and a third lumen portion (communication with the second lumen portion 723 on the distal end side). Female side lumen part) 724 is formed. The inner diameter of the second lumen 723 is larger than that of the first lumen (female side lumen) 731 formed in the lid 73 described later, and the third lumen 724 ( The inner peripheral surface 728) has a smaller inner diameter than the second lumen 723. The inner diameter of the third lumen portion 724 is preferably slightly larger than the maximum outer diameter of a body portion 55 (outer peripheral surface 551) of the valve body 51 described later.

  Further, an inner protrusion 725 made of a tubular body is provided at the center of the bottom surface 722 of the female connector main body 72. When the male connector portion 6 of the connector 5A ′ is connected to the first lumen portion 731 (connection port 732) and the valve body 51 starts to be pressed, the internal protrusion 725 supports the inside of the valve body 51. Thus, it is possible to prevent the valve body 51 from buckling (the valve body 51 is bent into a dogleg shape) (see FIG. 12). Further, it is possible to prevent the liquid from staying when the liquid passes through the connector 5A.

  The inner protrusion 725 has a lumen formed inside the male connector main body 61 and communicates with a flow path 611 through which liquid can pass. Thus, the second lumen portion 723 and the third lumen portion 724 are in communication with the liquid channel 621 via the internal protrusion 725 and the channel 611.

  Further, a stepped portion 727 having a diameter larger than that of the proximal end side is provided on the distal end side of the outer peripheral surface 726 of the valve body installing portion 721.

  The lid portion 73 shown in FIG. 11 has a space (female side lumen portion) in which the valve body 51 is accommodated, and is connected to the proximal end side (valve body installation portion 721) of the female connector portion main body 72. It is.

  Inside the lid portion 73, a first lumen portion 731 into which a head 50 of the valve body 51 to be described later can be inserted, and the first lumen portion 731 are communicated with and expanded from the first lumen portion 731. A diameter fitting portion 733 is formed.

  The first lumen portion 731 is formed so that its shape corresponds to the outer shape of the head portion 50 of the valve body 51. In addition, a connection port (connection portion) 732 for connecting the male connector portion 6 of the connector 5A ′ is formed on the proximal end side of the first lumen portion 731 and the diameter thereof is the first inner portion 731. The diameter of the cavity portion 731 is smaller than that of the distal end side.

  A plurality of ribs 735 projecting in the radial direction of the first lumen portion 731 along the axial direction are provided on the inner peripheral surface 734 of the first lumen portion 731. When the male connector portion 6 of the connector 5A ′ is connected to the connector 5A (connection port 732), the valve body 51 is supported by the rib 735, and the valve body 51 is buckled (the valve body 51 falls). Can be prevented. Moreover, the number of ribs 735 is not specifically limited, For example, it is preferable that it is 2-10 pieces, and it is more preferable that it is 4-8 pieces.

  A stepped portion 736 is formed on the distal end side of the fitting portion 733 so as to be fitted with the stepped portion 727 of the valve body installing portion 721, and its diameter is larger than the diameter of the proximal end side of the fitting portion 733. ing. In addition, the inner diameter of the stepped portion 736 is preferably substantially the same as or slightly smaller than the outer diameter of the stepped portion 727 of the valve body installing portion 721. As a result, the lid 73 (stepped portion 736) and the female connector main body 72 (stepped portion 727) can be firmly fitted (connected) (contacted fluid-tightly), and thus the liquid inside the connector 5A can be connected. Can be prevented from leaking. Further, when the lid portion 73 and the female connector portion main body 72 are connected, the first lumen portion 731 and the second lumen portion 723 communicate with each other, and the first lumen portion 731 and the second lumen portion are communicated. The valve body 51 can be installed (stored) in the space formed by the portion 723 and the third lumen portion 724.

  In addition, as a fixing method of the female connector part main body 72 and the cover part 73, it is not limited to fitting. Also good.

  As shown in FIG. 1 (the same applies to FIGS. 2 and 3), the female connector portion 7A is provided in the positive y-axis direction with respect to the male connector portion main body 61 (male connector portion 6). That is, the female connector portion 7A has a center line parallel to the center line of the male connector portion 6, and the opening 71 (connection port 732) of the female connector portion 7A and the opening 623 of the male connector portion 6 are mutually connected. It is arranged to face in the opposite direction.

  Thus, for example, as shown in FIG. 13, when two connectors 5A are connected to each other, the connectors 5A are connected almost linearly by connecting one male connector 6 and the other female connector 7A. can do.

  The female connector portion 7B is provided in the positive x-axis direction with respect to the male connector portion main body 61 (male connector portion 6). That is, the female connector portion 7 </ b> B is provided so that the center line thereof is substantially orthogonal to the center line of the male connector portion 6.

  By providing such female connector parts 7A and 7B, the liquid can be sent to the male connector part 6 from two different directions, or the liquid from the male connector part 6 can be branched in two different directions. be able to.

  As shown in FIGS. 11 and 12, valve bodies 51 are housed (fixed) in the female connector portion 7A and the female connector portion 7B, respectively.

  Each valve body 51 is made of an elastic material. Examples of the elastic material include natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane rubber, silicone rubber, and fluorine rubber. Various thermoplastic materials such as styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, transpolyisoprene, fluororubber, chlorinated polyethylene, etc. Of these, one or more of these may be used in combination. By using such an elastic material, moderate elasticity can be obtained on the top surface 511 of the valve body 51. Therefore, when the connectors 5A and 5A ′ are connected to each other, the top surface 511 opens the male connector portion 6. It can be in close contact with the portion (end portion) 623 (see FIG. 12).

  As shown in FIG. 10, the valve body 51 includes a head portion 50 and a body portion 55 provided (formed) on the distal end side of the head portion 50.

  The head 50 has a bottomed cylindrical shape, and includes a lumen portion 515 through which a liquid can pass and a slit 512 that reaches the lumen portion 515 from a flat top surface 511 (bottom portion 513). Is formed. The slit 512 has a substantially single character shape. Since the shape of the slit 512 is such a simple shape, the slit 512 can be opened (opened) more easily (reliably). Further, since the top surface 511 is flat, the top surface 511 (slit 512) can be easily sterilized.

  As shown in FIG. 7, the top surface 511 is exposed from the opening 71 of the female connector portion 7B (the same applies to the female connector portion 7A). In addition, the top surface 511 is located on substantially the same plane as the end surface of the female connector portion 7B.

  The head portion 50 includes a tapered portion 56 having a tapered shape in which the outer diameter near the top surface 511 gradually increases toward the trunk portion 55 (in the axial direction), and an outer diameter constant portion 57 provided at the tip thereof. have.

  Further, the taper portion 56 is formed with a notch portion 561 from which a part of the taper portion 56 is removed. That is, the head 50 is formed with a notch 561 that is removed so as to straddle the tapered portion 56 and the constant outer diameter portion 57.

  Thereby, when the male connector portion 6 of the connector 5A ′ connected (inserted) to the connector 5A is removed, that is, when the locked state is released, the valve body 51 (head 50) is the first of the lid portion 73. It is possible to easily enter the inner cavity portion 731, and thus the slit 512 can be more reliably closed.

  Further, the head 50 includes two protruding contact portions 52 that are pushed when the slit 512 is closed. Each of these two contact portions 52 is formed in the vicinity of the top surface 511 of the head 50 and protrudes in a direction opposite to the direction in which the slit 512 closes (the arrow direction in FIG. 10).

  By such a contact portion 52, when the head 50 is inserted into the first lumen portion 731 of the lid portion 73, the inner peripheral surface 734 of the first lumen portion 731 presses the contact portion 52. Therefore, the slit 512 can be closed more reliably (see FIG. 11). Thereby, the pressure resistance against the pressure (internal pressure) of the liquid in the connector 5A can be improved.

  The head 50 configured as described above is inserted into the first lumen portion 731 of the lid portion 73 with the slit 512 closed when the male connector portion 6 of the connector 5A ′ is not connected. (See FIG. 11).

  As shown in FIG. 10, the trunk | drum 55 is comprised by the cylindrical body which made the bellows shape. That is, the body 55 has a bellows shape in which the large-diameter ring portion 552 and the small-diameter ring portion 553 are alternately arranged in the axial direction in the outer shape. Such a body portion 55 is a deforming portion that biases the valve body 51 from the distal end side toward the proximal end side (in a direction in which the head portion 50 is inserted into the first lumen portion 731 of the lid portion 73). It functions as (biasing means).

  Since the body portion 55 functions as a deforming portion in this way, it is not necessary to separately provide the connector 5A with a component for constituting the biasing means, contributing to a reduction in the number of components and a simplification of the structure. Can do.

  Moreover, although this trunk | drum 55 bears most of the restoring force which the valve body 51 restores toward the base end side from the front end side, the head 50 may bear a part of the restoring force.

  Moreover, in the trunk | drum 55 (tubular body), the number of the convex parts (large diameter ring part 552) in the bellows-like location is three or four. That is, the number of concave portions (small diameter ring portions 553) in the bellows-like portion is four or five.

  As shown in FIGS. 1, 2, 7, and 8, the male lock 8 </ b> A includes a base (male lock main body) 81, a protrusion 82 that protrudes from the base 81, and a pair of claws provided on the protrusion 82. 83A and 83A, and the urging | biasing part 84 which urges | biases each nail | claw part 83A, respectively. Note that the male lock portion 8A shown in FIG. 8 belongs to the connector 5A ', but has the same configuration as the male lock portion 8A belonging to the connector 5A shown in FIG. For this reason, it demonstrates here also with reference to FIG.

The base 81 has a long shape.
In the positive z-axis direction of the base portion 81 (male lock portion 8A), the male connector portion main body 61 of the male connector portion 6 is fixed (fixed) adjacent to the base portion 81. In addition, in the negative direction of the y-axis of the base portion 81, a protruding portion 82 that protrudes in that direction is formed.

  Claw portions 83A and 83A are provided in the y-axis positive and negative directions of the protruding portion 82, respectively. Both the claw portions 83A and 83A have their end portions (the male side engaging portion 832) approach and separate from each other in the x-axis direction (vertical direction in FIG. 8).

  A male side engaging portion 832 is provided at the end of each claw portion 83A, such that a part of the end is cut out (deleted).

  The urging portion 84 is provided between the protruding portion 82 and the claw portion 83A. The urging portion 84 urges the claw portions 83A so that the end portions (male side engaging portions 832) of the claw portions 83A and 83A are separated from each other.

  The male lock portion 8A having such a configuration is in a position corresponding to (adjacent to) the male connector portion 6 (see FIG. 7). Further, the male lock portion 8A and the male connector portion 6 are respectively formed toward the y-axis negative direction, that is, the connection direction (projection direction) is parallel to each other.

  As shown in FIG. 1, the female lock portions 9A and 9B are portions to which the male lock portion 8A of the connector 5A ′ can be connected (in this embodiment, the male lock portion 8A of the connector 5A ′ is connected to the female lock portion 9B. )

  As shown in FIG. 7, the female lock portion 9A is provided in the positive y-axis direction with respect to the base portion 81 (male lock portion 8A). In addition, the female lock portion 9B is provided in the positive x-axis direction with respect to the base portion 81 (male lock portion 8A). Since the shape (configuration) of the female lock portion 9A and the female lock portion 9B are substantially the same, the female lock portion 9B will be described below representatively.

The female lock portion 9B has a substantially tubular shape as a whole.
As shown in FIG. 8 (also in FIG. 9), the female lock portion 9B is connected to a female side engagement portion 91 that can be engaged with each male side engagement portion 832 of the male lock portion 8A of the connector 5A ′. An operation portion 93 that can operate each claw portion 83A of the male lock portion 8A of the connector 5A ′ is provided.

  As shown in FIG. 8, the female side engaging portion 91 is formed so that the inner peripheral portion on the opening 94 side of the female lock portion 9B gradually decreases in the x-axis negative direction (left direction in FIG. 8). Yes. As shown in FIG. 8C, the end portion 911 of the female side engaging portion 91 engages with the male side engaging portion 832 of the male locking portion 8A of the connector 5A ′, so that the connector 5A (female locking portion 9B) is obtained. And the connector 5A ′ (male lock portion 8A) are locked.

  As illustrated in FIG. 7, the operation unit 93 is configured by a small piece provided in the negative x-axis direction with respect to the female side engagement unit 91. This operation part 93 operates (presses) each claw part 83A so that the ends of both claw parts 83A of the connector 5A '(male lock part 8A) in the locked state are brought close to each other.

  Further, the operation portion 93 is formed so that its outer surface is substantially flush with the outer surface of the female side engagement portion 91. Thereby, it can prevent touching (pressing) the operation part 93 unintentionally. That is, it is possible to prevent the lock state from being unintentionally released.

  The female lock portion 9B having such a configuration is in a position corresponding to (adjacent to) the female connector portion 7B (see FIG. 7). Further, the female lock portion 9B and the female connector portion 7B are respectively formed in the positive z-axis direction, that is, the connection direction (formation direction) is parallel to each other.

  Thus, in connector 5A, males (male lock part 8A and male connector part 6) correspond to females (female lock part 9B and female connector part 7B). Thereby, by confirming female connector part 7B and male connector part 6, connector 5A and connector 5A 'can be connected correctly (reliably), or female lock part 9B and male lock part 8A are confirmed. By doing so, the connector 5A and the connector 5A ′ can be accurately (reliably) connected.

Next, the connector 5A ′ will be described.
As described above, the connector 5A ′ includes the male connector portion 6 and the male lock portion 8A that are substantially the same as the connector 5A, and the tube connection portion 63 to which the tube 41 is connected (for example, see FIG. 6).

  The male connector portion 6 is disposed such that the opening 623 is directed in the x-axis negative direction. A groove 616 along the x axis is formed in the upper plate 614 of the male connector portion 6.

  The male connector portion 6 has a pair of grooves 617 formed between the upper plate 614 and the lower plate 615. Each groove 617 is formed along the x-axis.

  The tube connecting portion 63 is configured by a tubular body that communicates with the male connector portion 6. The liquid flows from the tube 41 to the male connector portion 6 through the tube connection portion 63.

  The tube connection portion 63 is formed so as to protrude in the positive x-axis direction with respect to the male connector portion 6.

  The male lock portion 8A is provided adjacent to the male connector portion 6 so that the connection direction with the male connector portion 6 is parallel to each other. That is, the male lock portion 8A is disposed on the negative z-axis side with respect to the male connector portion 6 so that the protruding portion 82 faces the negative x-axis direction.

  Next, a connection process between the connector 5A and the connector 5A 'will be described. In other words, the description will be made from the lock preparation state of the connectors 5A and 5A 'to the lock state and from the lock state to the unlocked state (lock release state).

  As shown in FIGS. 1, 2, 4 and 8A, in the lock preparation state, the connector 5A and the connector 5A 'are separated from each other. Here, in the lock ready state, the female connector portion 7B of the connector 5A and the male connector portion 6 of the connector 5A ′ are close to each other, and the female lock portion 9B of the connector 5A and the male lock portion 8A of the connector 5A ′ are mutually connected. It is a state before the lock parts come close to each other and become locked.

  From this lock ready state, the male lock portion 8A of the connector 5A 'is brought close to (push in) the female lock portion 9B of the connector 5A.

  As shown in FIG. 8B, as the male lock portion 8A of the connector 5A ′ is inserted into the female lock portion 9B of the connector 5A, the female side engaging portion 91 of the connector 5A urges the connector 5A ′. The claw portion 83A of the connector 5A ′ is pressed against the urging force of the portion 84.

  When the male lock portion 8A of the connector 5A ′ is further pushed into the female lock portion 9B of the connector 5A, the male side engaging portion 832 of the connector 5A ′ is engaged with the female side engaging portion 91 of the connector 5A, that is, the connector 5A ′. And the connector 5A are locked (see FIG. 8C).

  As shown in FIG. 12, when locked, the opening 623 of the male connector 6 of the connector 5A 'presses the top surface 511 of the head 50 of the connector 5A in the axial direction. As a result, the body portion 55 is deformed (compressed) in the axial direction, and the head portion 50 moves from the first lumen portion 731 and enters the second lumen portion 723. The head 50 has been regulated by the inner peripheral surface 734 of the first lumen 731 in the first lumen 731 until then, but the head 50 has moved to the second lumen 723, The restriction on the outer peripheral surface 50 is released or relaxed, and as a result, the diameter can be sufficiently expanded in the direction of the arrow in FIG. 12 by axial compression, that is, it can be sufficiently deformed. Therefore, the slit 512 can be surely and sufficiently opened (opened). This also allows the liquid flow path 621 of the male connector portion 6 of the connector 5A ′ and the inner cavity portion (hollow portion) of the internal projection 725 of the female connector portion 7B of the connector 5A via the valve body 51 (slit 512). Are communicated with each other, that is, are connected so as to be able to flow, so that, for example, liquid can pass smoothly during transfusion, blood transfusion, nutrient administration, and the like.

  Moreover, since the opening part 623 of the male connector part 6 of connector 5A 'presses the head 50 of the valve body 51 against the urging | biasing force of the trunk | drum 55 of the valve body 51 in the locked state, the said male connector The opening 623 of the part 6 and the top surface 511 of the head 50 (valve body 51) are in close contact with each other. Thereby, the liquid-tightness of the connection between the male connector portion 6 and the female connector portion 7B can be maintained, that is, they can be securely connected in a liquid-tight manner.

  Further, the lock state between the connector 5A 'and the connector 5A is released by operating the operation portion 93 of the connector 5A.

  In other words, from the locked state shown in FIG. 9A, as shown in FIG. 9B, the claw portion 83A of the connector 5A ′ is pressed by the operation portion 93 of the connector 5A. Thereby, the engagement between the female side engaging portion 91 of the connector 5A and the male side engaging portion 832 of the connector 5A 'is released (released).

  Thereafter, as shown in FIG. 9C, when the connector 5A 'is pulled, the connector 5A' and the connector 5A are separated from each other.

  As described above, if the fitting strength between the portion of the luer taper portion 622 on the male connector portion main body 61 side in the locked state and the connection port 732 of the lid portion 73 is set smaller than the urging force of the valve body 51, When the connection is lost, the connector 5A and the connector 5A ′ are automatically separated.

  As described above, the connector 5A and the connector 5A ′ can be completely connected to the connector 5A and the connector 5A ′ by a simple operation of pushing the male lock portion 8A of the connector 5A ′ into the female lock portion 9B of the connector 5A. That is, it can be in a locked state.

  Further, almost simultaneously with the locked state, the female connector portion 7B of the connector 5A and the male connector portion 6 of the connector 5A 'are connected in a liquid-tight manner.

  The constituent materials of the connectors 5A and 5A ′ (excluding the valve body 51) are not particularly limited. For example, polyvinyl chloride, polyethylene, polypropylene, cyclic polyolefin, polystyrene, poly- (4-methylpentene-1) , Polycarbonate, acrylic resin, acrylonitrile-butadiene-styrene copolymer, polyester such as polyethylene terephthalate, polyethylene naphthalate, butadiene-styrene copolymer, polyamide (for example, nylon 6, nylon 6,6, nylon 6,10, Various resins such as nylon 12) can be mentioned.

Next, the temporary fixing member 10 will be described.
As shown in FIGS. 1 to 4, the temporary fixing member 10 temporarily fixes the connector 5 </ b> A and the connector 5 </ b> A ′. The temporary fixing member 10 includes a plate-like base (main body) 101 and a side-by-side plate 102 connected side by side (adjacent) to the base 101 (for example, see FIG. 5).

  The base 101 is formed by bending a plate-like body as desired (at four locations). In other words, the base 101 has the first bent portion 101a to the fourth bent portion 101d. The first bent portion 101a is a portion bent in an L shape. The second bent portion 101b is a portion that is located on the x-axis negative side of the first bent portion 101a and bent in an L shape in the opposite direction to the first bent portion 101a. The third bent portion 101c is a portion that is located on the x-axis negative side of the second bent portion 101 and is bent in an L shape in the same direction as the second bent portion 101b. The fourth bent portion 101d is located on the negative x-axis side of the third bent portion 101c, and is bent in an L shape in the opposite direction to the third bent portion 101c (in the same direction as the first bent portion 101a). It is the part which did. The angles of the bent portions 101a to 101d are equally obtuse.

  In the bent base 101, the first opening (first holding part) 103a for holding the connector 5A ′ and the second opening (second holding part) for holding the connector 5A are provided. 103b. As described above, the openings 103a and 103b each have a function as a holding unit that holds a temporarily fixed state in which the positional relationship between the connectors 5A and 5A 'is temporarily fixed in the lock ready state. Hereinafter, each of the openings 103a and 103b will be described.

  The first opening 103a is a portion opened from the vicinity of the first bent portion 101a to the vicinity of the third bent portion 101c. The first opening 103 a has a long shape along the longitudinal direction of the base 101.

  As shown in FIG. 5, a pair of first claw portions 105 a and a pair of second claw portions 105 b are formed to protrude from the back side of the base portion 101 in the first opening portion 103 a.

  Each first claw portion 105a has an L shape in plan view. As shown in FIG. 2, the vicinity of the root of the tube connecting portion 63 of the connector 5A ′ (male connector portion 6) abuts (supports) from the x-axis negative side to each first claw portion 105a. As a result, the unintentional movement of the connector 5A ′ in the positive x-axis direction is restricted.

  Each of the second claw portions 105b protrudes toward the inside of the first opening 103a. As shown in FIG. 2, the edge portion of the lower plate 615 of the connector 5A ′ (male connector portion 6) abuts (supports) from the x-axis positive side on each second claw portion 105b. As a result, the unintentional movement of the connector 5A 'in the negative x-axis direction is restricted.

  By such first claw portion 105a and second claw portion 105b, the connector 5A 'is securely temporarily fixed, that is, the temporarily fixed state is reliably maintained.

  As shown in FIG. 5, a pair of third claw portions 105 c are formed in the first opening 103 a so as to protrude from the front side of the base 101. Further, a minimum width portion 104 having a minimum width is formed in the middle of the first opening 103a. In the temporary fixing member 10, the third claw portions 105c and the minimum width portion 104 respectively enter the grooves 617 of the connector 5A '(see, for example, FIG. 2). The connector 5A 'can move toward the connector 5A by releasing the restriction (temporary fixing) of each second claw portion 105b. Each of the third claw portions 105c and the minimum width portion 104 functions as a guide portion that guides the movement of the connector 5A 'when the connector 5A' moves. Thereby, connector 5A 'can move smoothly.

  Further, as described above, each of the third claw portions 105c and the minimum width portion 104 enters the respective grooves 617 of the connector 5A ′. For this reason, the temporarily fixed connector 5 </ b> A ′ cannot be detached from the temporary fixing member 10.

  As shown in FIG. 5, the second opening 103 b is a part opened at the end of the base 101 on the fourth bent portion 101 d side.

  The second opening 103 has a shape corresponding to the outer shape of the upper plate 614 of the connector 5A (male connector portion main body 61) on the x-axis negative side, that is, a circular portion 106 that forms a circle. . Inside the circular portion 106, a T-shaped portion 107a having a T-shape in plan view is installed. As shown in FIG. 1, the T-shaped portion 107a is fitted in each of the grooves 612 and 613 of the connector 5A (male connector portion main body 61).

  Further, a claw portion 107b protruding in the negative z-axis direction is formed at the edge of the circular portion 106. As shown in FIG. 2, the claw portion 107b engages with the lower plate 615 of the connector 5A (male connector portion main body 61).

  By the T-shaped portion 107a and the claw portion 107b, the connector 5A is supported at two places where the male connector portion main body 61 is different. Thereby, the unintentional movement of the connector 5A is restricted, and thus the connector 5A is surely temporarily fixed.

  The juxtaposed plates 102 are connected in the vicinity of the second bent portion 101b and the third bent portion 101c of the base 101. This juxtaposed plate 102 has a long shape.

  Moreover, the juxtaposed plate 102 has a small piece 108 (detachment preventing means) at its end. The small piece 108 is located in the vicinity of the top portion 301 side (y-axis negative side) of the cap 30 of the connector 5A temporarily fixed to the base portion 101 (temporary fixing member 10). Thereby, the detachment | leave from the male connector part 6 of the cap 30 can be prevented reliably in a temporarily fixed state. Therefore, until the cap 30 is removed, for example, the inside of the connector 5A is prevented from being contaminated via the male connector portion 6.

  In the connector assembly 20 (temporary fixing member 10) having such a configuration, the connectors 5A and 5A 'can take the following three states.

  The first is the temporarily fixed state (first state) as described above. In this temporarily fixed state, since the positional relationship between the connectors 5A and 5A 'is temporarily fixed, the connectors 5A and 5A' cannot be locked.

  Further, as shown in FIG. 4, in the temporarily fixed state, a gap 201 is formed between the opening 71 of the female connector portion 7B of the connector 5A and the opening 623 of the male connector portion 6 of the connector 5A ′. Thereby, in the connector assembly 20 in the lock ready state, deformation of the valve body 51 is prevented. For example, when the infusion tube set 1 in which the connector 5A and the connector 5A 'are temporarily fixed is shipped, the valve body 51 until the infusion tube set 1 is used is prevented from being deformed for a long time. Thereby, it can prevent that the valve body 51 will be plastically deformed and the slit 512 will be in the state always opened.

  The second state is a state (second state) in which the connector 5A is temporarily fixed, but the connector 5A 'is temporarily fixed. When the temporarily fixed connector 5A 'is pressed in the negative x-axis direction, the restriction (support) of each second claw portion 105b with respect to the lower plate 615 of the connector 5A' (male connector portion 6) is released. Thereby, the connector 5A 'can be moved to the connector 5A side.

  The third is a locked state (third state) in which the connectors 5A and 5A 'are locked. As described above, the connector 5A 'that has become movable in the second state is pushed into the connector 5A to enter the locked state.

  Also, as shown in FIG. 3, in the locked state, the support for the connector 5A 'is released. For this reason, when the end on the first bent portion 101a side of the temporary fixing member 10 is pulled up in the direction of the arrow pointing upward in FIG. 3 (z-axis positive direction), the connector 5A ′ is removed from the first opening 103a. break away. Further, when the temporary fixing member 10 is further lifted in the same manner, the T-shaped portion 107a is detached from each of the grooves 612 and 613 of the connector 5A, and then the claw portion 107b is detached from the lower plate 615 of the connector 5A. Thereby, like the connector 5A ', the connector 5A is also detached from the second opening 103b.

  In the locked state, the male connector portion 6 of the connector 5A ′ and the female connector portion 7B of the connector 5A are connected in a liquid-tight manner. For this reason, the liquid can be reliably circulated from the infusion bag 31 to the infusion administration section 2 via the connectors 5A and 5A '.

  As described above, in the connector assembly 20, the connectors 5A and 5A ′ are temporarily fixed by the temporary fixing member 10 (becomes temporarily fixed), and the temporary fixing member 10 is removed when the connectors 5A and 5A ′ are in the locked state. Can do.

  Thereby, if the temporary fixing member 10 is installed in the connector assembly 20, it can be determined that the connectors 5A and 5A 'are in the lock ready state (temporary fixed state), that is, can be visually confirmed with certainty. . Further, if the temporary fixing member 10 is removed from the connector assembly 20, it can be determined that the connectors 5A and 5A 'are in a locked state.

  Further, whether or not the infusion tube set 1 can be infused can be reliably determined based on the presence or absence of the temporary fixing member 10. Further, since the cap 30 cannot be removed by the small piece 108 in the temporarily fixed state, it is possible to prevent the connector assembly 20 from being used in the temporarily fixed state. Therefore, unintentional infusion can be surely prevented.

  In addition, although it does not specifically limit as the temporary fixing member 10, For example, polyacetal other than various resin which was mentioned by description about the connector 5A can be used preferably.

  The tube 41 has flexibility (softness) and constitutes a flow path for infusion. Examples of the constituent material of the tube 41 include soft polyvinyl chloride, ethylene-vinyl acetate copolymer, polyethylene, polypropylene, polybutadiene, and the like, or materials mainly composed of these.

  In the middle of the tube 41, a slide type clamp (slide clamp) 46 and an infusion tube 44 are provided as flow rate adjusting means for adjusting the flow rate of the infusion. The slide clamp 46 is not particularly limited, and a conventionally known slide clamp 46 can be used, and examples thereof include Japanese Patent Application Laid-Open No. 2004-49319.

  Further, the slide clamp 46 may be any other as long as the flow rate can be adjusted, such as a roller type clamp.

  A predetermined infusion is stored in the infusion bag 31. When the bottle needle 451 penetrates (punctures) a stopper (rubber stopper) of the infusion bag 31, the infusion bag 31 and the second infusion bag 31 are connected via the bottle needle 451. The infusion tube 4a is connected, and the infusion solution can be supplied from the infusion bag 31 to the second infusion tube 4a side.

  The drip tube 44 is installed in the vicinity of the bottle needle 451. With this drip tube 44, the flow rate of the infusion can be visually confirmed.

  A backflow prevention valve 49 is installed between the connector 5 </ b> A ′ and the drip tube 44. The backflow prevention valve 49 is a one-way valve from the infusion bag 31 toward the connector 5A. The backflow prevention valve 49 may be installed anywhere as long as it is between the connector 5A 'and the drip tube 44, but is preferably installed closer to the connector 5A'.

  The backflow prevention valve 49 has a valve body in which a pair of plate-like opening and closing members (not shown) are formed. The opening and closing members are in close contact with each other by elastic force (restoring force), thereby preventing backflow. The flow path in the valve 49 is closed. In the case where the infusion flow is directed from the distal end side to the proximal end side, pressure is applied to the outer surface of each opening / closing member by the infusion solution so that the opening / closing members are brought into close contact with each other. For this reason, the infusion does not flow from the distal end side to the proximal end side.

  On the other hand, when the infusion flow is directed from the proximal end side to the distal end side, a predetermined pressure is applied to the proximal end side (tapered surface) of each opening / closing member by the infusion solution, and the opening / closing member is separated by the pressure. The flow path in the backflow prevention valve 49 is opened. Thereby, the infusion flows from the proximal end side to the distal end side.

  The backflow prevention valve 49 may not be necessary when infusion is ensured by an infusion pump or the like, but is preferably installed. According to the second infusion tube 4a, even if a certain amount of pressure is applied from the first infusion tube 4b connected to the connector 5A of the second infusion tube 4a to administer the infusion, the backflow prevention valve 49 The infusion can be prevented from flowing to the upstream side (base end side) of the second infusion tube 4a, and the infusion can be reliably administered to the patient.

  As shown in FIG. 13, the infusion administration unit 2 includes an indwelling needle or catheter (in the present embodiment, indwelling needle 21) placed in the blood vessel 110 of the patient, and this indwelling needle or catheter (in the present embodiment, indwelling needle). 21) and the infusion administration portion side connector 26 connected to the proximal end portion.

  The constituent material of the indwelling needle 21 (or catheter) may be a metal needle such as a winged intravenous injection needle depending on the indwelling site, but is preferably a flexible polymer material such as polyethylene or polypropylene. And other thermoplastic resins such as polyolefin, polyester, and polyurethane.

  The infusion administration portion side connector 26 includes a female lock portion 9A and a female connector portion 7A that can be respectively connected to the male lock portion 8A and the male connector portion 6 of the connector 5A to which the second infusion tube 4a is connected, and a female lock similar to these. It has the part 9B and the female connector part 7B, and the male connector part 263.

  Further, the axis of the male connector portion 263 and the axis of the female connector portion 7A substantially coincide with each other, and the axis of the female connector portion 7B is substantially orthogonal to these axes. That is, the male connector portion 263 and the female connector portion 7A face in opposite directions, and the female connector portion 7B faces in a substantially vertical direction with respect to the male connector portion 263 and the female connector portion 7A. .

  In the infusion administration part side connector 26, a tube 24 through a stop clamp 25 that can be stopped with one touch is connected to the male connector part 263 in a fluid-tight manner. A male connector portion 23 is connected to the distal end side of the tube 24. The male connector portion 23 is not particularly limited as long as it can be liquid-tightly connected to the indwelling needle or the catheter outlet port 211, such as a luer connector or a luer lock connector, but a luer lock connector is preferable.

  The indwelling needle 21 has an outlet port 211 at its proximal end, and a male connector portion 23 attached to the infusion administration side connector 26 is liquid-tightly connected to the outlet port 211.

Next, an operation (usage method) of the infusion tube set 1 will be described.
Here, the second infusion tube 4a is a first infusion line (first infusion route) for administering an infusion to a patient, that is, an infusion tube through which mainly a basic solution or the like flows, and the first infusion tube 4b is used as a second infusion line (second infusion route) for administering an infusion to a patient, that is, mainly as an auxiliary route, for example, as an infusion tube through which a fat emulsion, a therapeutic agent, an antibiotic or the like is allowed to flow. A case will be described as an example.

  In connecting the second infusion tube 4a, first, for example, a maintenance infusion is prepared in the infusion bag 31.

  Next, the connectors 5A and 5A 'in the lock preparation state are brought into the lock state. That is, the male connector portion 6 of the connector 5A 'is pushed into the female connector portion 7B of the connector 5A and is fitted in a liquid-tight manner. Thereafter, the temporary fixing member 10 is removed. Thereby, it can be recognized that the connectors 5A and 5A 'are not in the lock ready state but in the locked state.

  Next, as shown in FIG. 13, the bottle needle 451 of the second infusion tube 4a is pierced (punctured) into the stopper (rubber stopper) of the infusion bag 31 in which the infusion is stored. Thereby, the infusion bag 31 and the second infusion tube 4a are connected via the bottle needle 451, and the infusion solution can be supplied from the infusion bag 31 to the second infusion tube 4a side.

Next, the flow path of the second infusion tube 4a is primed.
Next, the connector of the second infusion tube 4a is connected to the female connector portion 7A of the infusion administration portion side connector 26 connected to the outlet port 211 of the indwelling needle 21 placed in the blood vessel (for example, peripheral vein) 110 of the patient. 5A male connector portion 6 is inserted and fitted. Thereby, the female connector part 7A of the infusion solution administration part side connector 26 and the male connector part 6 of the connector 5A of the second infusion tube 4a are liquid-tightly connected. At this time, the female lock portion 9A of the infusion administration portion side connector 26 and the male lock portion 8A of the connector 5A are in a locked state, and the connection is prevented from being easily released.

  Next, the slide clamp 46 of the second infusion tube 4a is operated to adjust the infusion flow rate (administration rate) of the second infusion tube 4a to the instructed flow rate (indication administration rate) of the maintenance infusion agent. Administer.

  The infusion administration unit side connector 26 may be omitted, and the male connector part 6 of the connector 5A of the second infusion tube 4a may be connected to the outlet port 211 of the indwelling needle 21.

  Next, when connecting the first infusion tube 4b used to administer the antibiotic, for example, at regular intervals according to the condition of the patient, first, physiological saline in which the antibiotic is dissolved in the infusion bag 32 To dispense.

  Next, the connectors 5A and 5A 'of the first infusion tube 4b in the lock ready state are brought into the lock state. That is, the male connector portion 6 of the connector 5A 'of the first infusion tube 4b is pushed into the female connector portion 7B of the connector 5A and is fitted in a fluid-tight manner. Thereafter, the temporary fixing member 10 is removed. Thereby, also in the 1st infusion tube 4b, like the 2nd infusion tube 4a, it can recognize that the connectors 5A and 5A 'are not in the lock preparation state but in the lock state.

  Next, the bottle needle 451 of the first infusion tube 4b is pierced (punctured) into the stopper (rubber stopper) of the infusion bag 32 in which the infusion is stored. Thereby, the infusion bag 32 and the first infusion tube 4b are connected via the bottle needle 451, and the infusion solution can be supplied from the infusion bag 32 to the first infusion tube 4b side.

Next, the flow path of the first infusion tube 4b is primed.
Next, as shown in FIG. 14, the male connector portion 6 of the connector 5A of the first infusion tube 4b is inserted and fitted into the female connector portion 7A of the connector 5A of the second infusion tube 4a. Thereby, the female connector part 7A of the connector 5A of the second infusion tube 4a and the male connector part 6 of the connector 5A of the first infusion tube 4b are liquid-tightly connected. At this time, the female lock portion 9A of the second infusion tube 4a and the male lock portion 8A of the first infusion tube 4b are locked, and the connection is prevented from being easily released.

  Next, the slide clamp 46 of the first infusion tube 4b is operated to adjust the infusion flow rate (administration rate) of the first infusion tube 4b to the indicated flow rate (indication administration rate) of the antibiotic and administer the infusion solution. To do.

  In this way, the maintenance infusion from the second infusion tube 4a and the physiological saline in which the antibiotic is dissolved from the first infusion tube 4b can each be administered to the patient (can be co-injected). .

  When an infusion line (infusion route) is added, the male connector portion of the connector 5A of another infusion tube (not shown) is connected to the female connector portion 7A of the connector 5A of the first infusion tube 4b in the same manner as described above. 6 is inserted and fitted. Thereby, the female connector part 7A of the connector 5A of the first infusion tube 4b and the male connector part 6 of the connector 5A of another infusion tube are connected in a liquid-tight manner.

In the same manner, any number of infusion lines can be added.
In addition, the usage method of the said infusion tube set 1 is an example, and is not limited to this.

  For example, when the infusion is being administered to the patient from the second infusion tube 4a, the supplement may be performed by the first infusion tube 4b.

  Further, the number of infusion tubes in the infusion tube set may be one, or three or more.

  Moreover, when the infusion tube set has a plurality of infusion tubes, the infusion tubes may all be the same, may all be different, or may be the same only partially.

Second Embodiment
15 and 16 are perspective views showing a second embodiment of the connector assembly (temporary fixing member) of the present invention (FIG. 15 shows a temporarily fixed state, and FIG. 16 shows that the temporarily fixed state is released. Is shown).

  Hereinafter, the second embodiment of the temporary fixing member, the connector assembly, and the infusion tube set according to the present invention will be described with reference to these drawings. Will not be described.

  This embodiment is the same as the first embodiment except that the male lock portion, the female lock portion, and the temporary fixing member have different shapes (configurations).

  In the connectors 5A and 5A 'of the connector assembly 20A shown in FIGS. 15 and 16, the lock portion is a luer lock.

  In other words, the female lock portion 9C on the female connector portion 7B side of the connector 5A (the same applies to the sconnector portion 7A side) is constituted by a female screw formed on the outer peripheral surface of the lid portion 73 of the female connector portion 7B. Further, the male lock portion 8B of the connector 5A 'is configured by a cylindrical member 85 installed on the outer peripheral side of the tubular portion 62 of the male connector portion 6. The cylindrical member 85 is disposed concentrically with the tubular portion 62. On the inner peripheral surface of the cylindrical member 85, a female screw (not shown) that is screwed with the female lock portion 9C (male screw) in the locked state is formed.

  Next, the temporary fixing member 10A will be described. The temporary fixing member 10A is substantially the same as the temporary fixing member 10 of the first embodiment except that the configuration of the first holding portion that holds the connector 5A 'is different.

  The temporary fixing member 10A is constituted by a plate piece whose overall shape is substantially crank-shaped. A C-shaped portion 109 having a C-shape is provided at the right end of the temporary fixing member 10A in FIG. 15 (also in FIG. 16). As shown in FIG. 15, the cylindrical member 85 (male lock portion 8 </ b> B) of the connector 5 </ b> A ′ is fitted to the C-shaped portion 109. As a result, the connector 5 </ b> A ′ is temporarily fixed to the temporary fixing member 10. Therefore, it can be said that the C-shaped portion 109 functions as the first holding portion.

  When the connectors 5A and 5A 'are locked, the cylindrical member 85 is screwed into the female connector portion 7B of the connector 5A and moves in the negative x-axis direction. By this movement, the cylindrical member 85 is detached from the C-shaped portion 109, that is, the temporary fixing of the connector 5A 'is released (see FIG. 16).

  Further, in the locked state, the finger hooking portion (tab) 111 provided so as to protrude from the C-shaped portion 109 of the temporary fixing member 10A can be pulled upward in FIG. Thereby, the temporary fixing member 10A can be removed from each of the connectors 5A and 5A '.

  As described above, the temporary fixing member, the connector assembly, and the infusion tube set of the present invention have been described with respect to the illustrated embodiment. However, the present invention is not limited thereto, and the temporary fixing member, the connector assembly, and the infusion tube set are not limited thereto. Each component constituting the can be replaced with any component that can exhibit the same function. Moreover, arbitrary components may be added.

  Moreover, in each said embodiment, although the 1st lock part is a male lock part and the 2nd lock part is a female lock part, it is not limited to this, The state where the male lock part and the female lock part were reversed, That is, the 1st lock part may be a female lock part, and the 2nd lock part may be a male lock part.

  Moreover, although the tube is connected to the tube connection part of the 1st connector, it is not limited to this, For example, the tube may be abbreviate | omitted and an air filter may be connected.

  In the infusion tube set, the tube is connected to the tube connection portion of the first connector. However, the present invention is not limited to this, and the tube is connected to the male connector portion of the second connector. There may be.

  The temporary fixing member of the present invention includes a first connector having a male connector portion having a male side lumen portion, and a first lock portion provided so that the connection direction is parallel to the male connector portion, A female connector having a female-side lumen, the male connector being connectable to the female-side lumen, and being provided so that the connection direction of the female connector is parallel to the first connector; A second lock portion that can be connected to each other, and a seal member that is made of an elastic material and maintains the liquid-tightness of these connector portions when the male connector portion and the female connector portion are connected to each other. A member for temporarily fixing the second connector, wherein the male connector portion and the female connector portion are close to each other, and the first lock portion and the second lock portion are close to each other, Lock parts are locked In locked ready state before the state comprises holding means for holding the temporarily fixed state where the positional relationship has been temporarily fixed with the second connector and the first connector. Therefore, when there is a temporary fixing member, that is, when there is a temporary fixing member, the first connector and the second connector in the lock ready state are temporarily fixed (the temporarily fixed state is maintained). On the other hand, when there is no temporary fixing member, the first connector and the second connector are not in a lock ready state. In this way, it is possible to determine whether or not the first connector and the second connector are in a lock ready state based on the presence or absence of the temporary fixing member. In other words, the presence of the temporary fixing member makes it possible to reliably recognize that the first connector and the second connector are in the lock ready state. Therefore, the temporary fixing member of the present invention has industrial applicability.

Claims (8)

A first connector having a male connector part having a male side lumen part, and a first lock part provided so that the connection direction is parallel to the male connector part;
A female connector having a female-side lumen, the male connector being connectable to the female-side lumen, and being provided so that the connection direction of the female connector is parallel to the first connector; A second lock portion that can be connected to each other, and a seal member that is made of an elastic material and maintains the liquid-tightness of these connector portions when the male connector portion and the female connector portion are connected to each other. A temporary fixing member for temporarily fixing the second connector;
A first bent portion bent in an L shape, a second bent portion bent in an L shape in the opposite direction to the first bent portion, and an L shape bent in the same direction as the second bent portion A plate-shaped base having a third bent portion and a fourth bent portion bent in an L shape in the opposite direction to the third bent portion,
In the lock preparation state before the male connector part and the female connector part are close to each other, and the first lock part and the second lock part are close to each other, and the lock parts are in a locked state. , and a holding means for holding the temporarily fixed state where the positional relationship has been temporarily fixed with the second connector and the first connector,
The holding means includes a first holding portion that supports the first connector at two different locations in the temporarily fixed state, and a second holding portion that supports the second connector at two different locations. Have
A temporary fixing member, wherein the temporary fixing member is detached from the first connector and the second connector in the locked state . The base includes a first opening that opens from the vicinity of the first bent portion to the vicinity of the third bent portion, and a second opening that opens at an end on the fourth bent portion side. And formed,
The temporary fixing member according to claim 1 , wherein the first opening portion constitutes the first holding portion, and the second opening portion constitutes the second holding portion. In the temporarily fixed state, it can not be in the locked state,
The first connector and the second connector in the lock ready state can be brought into the locked state by releasing the temporary fixing of the holding means to at least one of these connectors. The temporary fixing member according to claim 1 or 2 . The first connector and the second connector are brought into the locked state by pushing one of the first connector and the second connector into the other connector in the lock ready state. And
By releasing the temporary fixing of the holding means to at least one of the first connector and the second connector, the one connector moves toward the other connector. The temporarily fixing member of Claim 3 which has a guide part which guides the movement of a connector. The second connector includes a tube connection portion that communicates with the female connector portion and is connectable to a tube body, and a cap that is detachably attached to the tube connection portion.
The temporary fixing member according to any one of claims 1 to 4, further comprising a disengagement preventing unit that prevents the cap from disengaging from the tube connecting portion in the temporarily fixed state. The temporary fixing member according to claim 5 , wherein the separation preventing means includes a small piece located in the vicinity of the top portion side of the cap. A first connector having a male connector part having a male side lumen part, and a first lock part provided so that the connection direction is parallel to the male connector part;
A female connector having a female-side lumen, the male connector being connectable to the female-side lumen, and being provided so that the connection direction of the female connector is parallel to the first connector; A second connector having a second locking part connectable to the part;
It said first connector and said second connector each is temporarily fixed, the connector assembly characterized by having a temporary fixing member according to any one of claims 1 to 6. A connector assembly according to claim 7 ;
An infusion tube set comprising: a tube connected to the first connector or the second connector.

Images