JPWO2019188213A1 - Medical connector - Google Patents

Abstract

The medical connector according to the present disclosure includes a male connector portion and a locking mechanism for locking the female connector portion while the male connector portion is inserted into the female connector portion of another medical device. The locking mechanism is located on the outer side in the radial direction of the male connector portion, and is available from an engaging position capable of engaging with the female connector portion in a state where the male connector portion is inserted and the engaging position. Also intervenes between the plurality of engaging portions that can be moved or deformed between the retracted positions retracted to the outside in the radial direction, and the plurality of engaging portions, and between the plurality of engaging portions. The gap holding portion includes a gap holding portion that holds the gap, and the gap holding portion engages with the female connector portion when the male connector portion is inserted into the female connector portion, and is in the direction of the central axis of the male connector portion. By moving along the above, the gap is varied to move the plurality of engaging portions from the retracted position to the engaged position.

Description

The present disclosure relates to medical connectors.

Conventionally, a medical connector has been used to connect a flow path in an infusion set for injecting a liquid such as a drug solution into a living body of a patient or the like, or in other medical devices. Such a connection of a medical connector is usually made by inserting a male connector portion provided in one medical connector into a female connector portion provided in the other medical connector. Further, in order to suppress the occurrence of unintended detachment of the medical connector, a configuration is known in which a locking mechanism is provided between the medical connectors. For example, in a luer lock type connector, a male threaded portion and a female threaded portion are used in the locking mechanism, but when connecting the male connector portion, the male connector portion is inserted into the female connector portion and screwed, which is a two-step connection operation. Was required, and the connection operation was complicated.

As a configuration for solving such a problem, for example, Patent Document 1 and Patent Document 2 disclose a configuration in which a plurality of claws are used as a locking mechanism. The medical connector described in Patent Document 1 and Patent Document 2 includes a male connector portion and a plurality of claws, and when the male connector portion is inserted into the female connector portion of another medical connector, a plurality of claws are formed. By overcoming and restoring the step portion formed on the other medical connector while elastically deforming it, it is possible to prevent the step portion from being pulled out from the step portion. According to such a configuration, the medical connectors can be connected to each other simply by inserting the male connector portion into the female connector portion, so that the connection operation can be facilitated.

Japanese Unexamined Patent Publication No. 2004-483 International Publication No. 2012/128321 (A1) Pamphlet

However, in the medical connector having the configuration described in Patent Document 1 and Patent Document 2, when the claw is elastically deformed at the time of connection with another medical connector and gets over the step portion, as described below. , There was room for unintended displacement of other medical connectors.

A medical connector having a configuration as described in Patent Document 1 and Patent Document 2 is referred to as a "first medical connector", and another medical connector connected to the first medical connector is referred to as a "second medical connector". When the first medical connector is held by the right hand, the second medical connector is held by the left hand, and the first medical connector is connected to the second medical connector, the second medical connector is used. In order to connect so as not to move, the second medical connector must be pushed back with the same force as the force pushed from the first medical connector.

However, when the nail gets over the step portion of the second medical connector, the force received by the second medical connector from the first medical connector is sharply reduced. At this time, the force of pushing the second medical connector toward the first medical connector side with the left hand may cause the second medical connector to shift toward the first medical connector side, that is, cause an unintended displacement. When the second medical connector is displaced, for example, when connecting the female connector portion of the catheter hub of the indwelling needle as the second medical connector to the male connector portion of the first medical connector arranged at the tip of the infusion set. In addition, the tip position of the catheter may shift and the catheter may come out of the blood vessel.

It is an object of the present disclosure to provide a medical connector capable of suppressing an unintended displacement of another medical device to be connected while ensuring ease of connection operation to the other medical device.

The medical connector as the first aspect of the present invention is a locking that locks the female connector portion in a state where the male connector portion and the male connector portion are inserted into the female connector portion of another medical device. A mechanism is provided, and the locking mechanism is located on the outer side in the radial direction of the male connector portion, and has an engaging position capable of engaging with the female connector portion in a state where the male connector portion is inserted. A plurality of engaging portions that can be moved or deformed between the retracted position retracted to the outside in the radial direction from the engaging position, and the plurality of engaging portions that are interposed between the plurality of engaging portions. A gap holding portion for holding a gap between the joint portions is provided, and the gap holding portion engages with the female connector portion when the male connector portion is inserted into the female connector portion, and the male connector portion engages with the female connector portion. By moving along the central axis direction of the portion, the gap is varied so that the plurality of engaging portions are moved from the retracted position to the engaged position.

As one embodiment of the present invention, the engaging portion includes a locking portion capable of locking the gap holding portion in the retracted position.

As one embodiment of the present invention, the engaging portion includes a locking portion capable of locking the gap holding portion while in the engaging position.

In one embodiment of the present invention, the gap holding portion partitions a through hole, and the gap holding portion is provided along the central axis direction with the male connector portion located in the through hole. It is movable.

As one embodiment of the present invention, the gap holding portion can move along the central axis direction by sliding with the sliding surfaces of the plurality of engaging portions, and the sliding surface can be moved along the central axis direction. With the engaging portion in the engaging position, the inclined surface portion inclined with respect to the central axis direction is provided.

In one embodiment of the present invention, the engaging portion moves between the retracted position and the engaging position by rotating the tip side in the central axis direction in the radial direction with respect to the proximal end side. It is movable or deformable.

According to the present disclosure, it is possible to provide a medical connector capable of suppressing an unintended displacement of another medical device to be connected while ensuring ease of connection operation to the other medical device.

It is a perspective view which shows the medical connector as one Embodiment. It is an exploded perspective view of the medical connector shown in FIG. It is a perspective view which shows the state different from FIG. 1 of the medical connector shown in FIG. It is a figure which looked at the medical connector shown in FIG. 1 from the tip side of the male connector part. It is a side view of the medical connector shown in FIG. It is a top view of the medical connector shown in FIG. 4 is a cross-sectional view taken along the line I-I of FIGS. 4 and 6. 4 is a cross-sectional view taken along the line II-II of FIGS. 4 and 5. 5 is a cross-sectional view taken along the line III-III of FIGS. 5 and 6. It is a figure which shows the separated state before the medical connector shown in FIG. 1 and other medical instruments are connected. It is a figure which shows the state in the process of connecting the medical connector shown in FIG. 1 and other medical instruments. It is a figure which shows the state which the connection between the medical connector shown in FIG. 1 and other medical instruments is completed. It is a figure which shows the infusion solution set which includes the medical connector shown in FIG.

Hereinafter, embodiments of the medical connector according to the present disclosure will be described with reference to FIGS. 1 to 13. The same reference numerals are given to common members and parts in each figure.

FIG. 1 is a perspective view showing a medical connector 1 (hereinafter, simply referred to as “connector 1”) as the present embodiment. FIG. 2 is an exploded perspective view of the connector 1 shown in FIG. FIG. 3 is a perspective view showing a state different from that of FIG. 1 of the connector 1. Details will be described later, but FIG. 1 shows a state in which the engaging portion 5 is in the retracted position, and FIG. 3 shows a state in which the engaging portion 5 is in the engaging position. As shown in FIGS. 1 and 3, the connector 1 of the present embodiment can be attached to the distal end of the medical tube 60 (indicated by the alternate long and short dash line in FIGS. 1 and 3) in the infusion set as a medical instrument. However, it may be configured to be attached to another medical device, or it may be in the state of a single connector 1. The distal end of the medical tube 60 described above means the downstream end of the flow path 60a of the medical tube 60.

The connector 1 can be connected to another medical device 100 including the female connector portion 101. Details of the other medical device 100 to which the connector 1 can be connected will be described later (see FIGS. 10 to 12).

As shown in FIGS. 1 and 3, the connector 1 includes a male connector portion 2, a locking mechanism 3, and a connecting portion 4. The male connector portion 2 can be inserted into the female connector portion 101 (see FIG. 10 or the like) of another medical device 100 (see FIG. 10 or the like). The locking mechanism 3 locks the female connector portion 101 while the male connector portion 2 is inserted into the female connector portion 101 (see FIG. 10 or the like) of another medical device 100 (see FIG. 10 or the like). Can be done. Although details will be described later, the locking mechanism 3 includes a plurality of engaging portions 5 and a gap holding portion 6. The connecting portion 4 can be connected to the medical tube 60 as a medical device.

As shown in FIGS. 1 and 3, the male connector portion 2 partitions a flow path 2a through which a liquid such as a chemical solution flows. The flow path 2a can communicate with the flow path 60a inside the medical tube 60. The flow path 2a of the present embodiment extends in a direction parallel to the central axis O of the tubular male connector portion 2 (hereinafter, referred to as the central axis direction A). Hereinafter, for convenience of explanation, the direction from the proximal end side to the distal end side of the male connector portion 2 in the central axis direction A is simply referred to as “insertion direction A1”. Further, the direction from the tip end side to the base end side of the male connector portion 2 in the central axis direction A is simply described as "pull-out direction A2".

The locking mechanism 3 includes a plurality of engaging portions 5 and a gap holding portion 6.

As shown in FIGS. 1 and 3, the plurality of engaging portions 5 are located outside the male connector portion 2 in the radial direction B, and the female connector portion 101 (FIG. 10) in which the male connector portion 2 is inserted. Etc.) and a retracted position (see FIG. 1) retracted to the outside in the radial direction B from this engaging position (see FIG. 3). FIG. 1 shows a state in which the plurality of engaging portions 5 are in the maximum retracted position most retracted to the outside in the radial direction B as one of the retracted positions.

As shown in FIG. 1, the gap holding portion 6 is interposed between the plurality of engaging portions 5 and holds the gap G between the plurality of engaging portions 5. Specifically, the gap holding portion 6 of the present embodiment can hold the gap G between the plurality of engaging portions 5 by being sandwiched between the plurality of engaging portions 5. The gap holding portion 6 engages with the female connector portion 101 when the male connector portion 2 is inserted into the female connector portion 101 (see FIG. 10 or the like). The gap holding portion 6 moves along the central axis direction A of the male connector portion 2 by engaging with the female connector portion 101 and being pressed. The gap G between the plurality of engaging portions 5 varies as the gap holding portion 6 moves along the central axis direction A. The movement of the engaging portion 5 between the retracted position (see FIG. 1) and the engaging position (see FIG. 3) is such that the gap G between the plurality of engaging portions 5 is moved by the gap holding portion 6 as described above. It is realized by changing by. Specifically, the engaging portion 5 moves from the retracted position (see FIG. 1) to the engaging position (see FIG. 3) when the male connector portion 2 is inserted into the female connector portion 101 (see FIG. 10 and the like). To do.

With such a configuration, the female connector portion 101 can be locked by the locking mechanism 3 in accordance with the connection operation of inserting the male connector portion 2 into the female connector portion 101 (see FIG. 10 or the like). .. That is, it is possible to ensure the ease of connection operation to the other medical device 100 provided with the female connector portion 101.

Further, the engaging portion 5 is engaged in the middle of the connection operation between the connector 1 and the other medical device 100 (see FIG. 10 etc.) in which the male connector portion 2 is inserted into the female connector portion 101 (see FIG. 10 etc.). It can be moved from the retracted position (see FIG. 1) to the engaged position (see FIG. 3). Therefore, while the tip of the male connector portion 2 is inserted to a predetermined depth in the female connector portion 101, the engaging portion 5 is not moved to the engaging position (see FIG. 3) and is not moved to the retracted position (see FIG. 3). 1) can be realized. That is, the engaging portion 5 is the female of the male connector portion 2 until the tip of the male connector portion 2 reaches a predetermined depth in the female connector portion 101 and the connection between the connector 1 and the other medical device 100 is completed. It can be configured so as not to hinder the insertion operation into the connector portion 101. In this way, it is possible to suppress an unintended displacement of the other medical device 100 to be connected at the time of connection.

Furthermore, since the gap holding portion 6 is interposed between the plurality of engaging portions 5, a mechanism for moving the plurality of engaging portions 5 in the radial direction B is provided between the plurality of engaging portions 5 by the gap holding portion. It can be miniaturized as compared with a configuration that does not intervene in.

FIG. 4 is a view of the connector 1 shown in FIG. 1 as viewed from the tip end side of the male connector portion 2. FIG. 5 is a side view of the connector 1 shown in FIG. FIG. 6 is a top view of the connector 1 shown in FIG. FIG. 7 is a cross-sectional view taken along the line I-I of FIGS. 4 and 6. FIG. 8 is a cross-sectional view taken along the line II-II of FIGS. 4 and 5. FIG. 9 is a cross-sectional view taken along the line III-III of FIGS. 5 and 6. Hereinafter, further details of the connector 1 of the present embodiment will be described with reference to FIGS. 1 to 9.

As shown in FIGS. 1 and 3, the locking mechanism 3 of the present embodiment includes a support portion 7 in addition to the plurality of engaging portions 5 and the gap holding portion 6 described above. The support portion 7 rotatably supports the plurality of engaging portions 5. Specifically, the support portion 7 supports each engaging portion 5 so that the tip end side in the central axis direction A rotates in the radial direction B with respect to the proximal end side. As a result, each engaging portion 5 can move between the above-mentioned retracted position (see FIG. 1) and the engaging position (see FIG. 3). The tip end side of the engaging portion 5 in the central axis direction A is the insertion direction A1, and the proximal end side of the engaging portion 5 in the central axis direction A is the extraction direction A2 side.

More specifically, as shown in FIGS. 1 to 3, the connector 1 of the present embodiment has a tubular member 61 constituting the male connector portion 2 and the connecting portion 4, and an engaging member constituting the engaging portion 5. It is composed of 62, a spacer member 63 that constitutes the gap holding portion 6, and a support member 64 that constitutes the support portion 7. Hereinafter, the configurations of each member and each part of the connector 1 of the present embodiment will be described in detail.

<Cylindrical member 61>
As shown in FIG. 2 and the like, the tubular member 61 of the present embodiment includes a regulation wall portion 11 and a tubular support portion 12 in addition to the male connector portion 2 and the connection portion 4 described above.

[Male connector part 2]
The male connector portion 2 of the present embodiment is formed in a region including one end of the tubular member 61 on the insertion direction A1 side. As shown in FIG. 2 and the like, the male connector portion 2 of the present embodiment includes a tapered portion whose outer diameter gradually decreases toward the insertion direction A1. More specifically, the male connector portion 2 of the present embodiment is configured by a tapered portion whose outer diameter gradually decreases toward the insertion direction A1. The outer peripheral surface of the tapered portion of the present embodiment is a 6% luer tapered surface conforming to ISO80369-7. The inner peripheral surface of the tapered portion of the present embodiment has a structure in which the inner diameter gradually decreases toward the insertion direction A1, but the inner diameter may be uniform regardless of the position in the central axis direction A.

[Connection part 4]
The connection portion 4 of the present embodiment is formed in a region including one end of the tubular member 61 in the removal direction A2. As shown in FIG. 2 and the like, the connection portion 4 of the present embodiment is located at the end of the connector 1 in the withdrawal direction A2 and is composed of a tubular portion extending in the central axis direction A. The tubular portion as the connecting portion 4 of the present embodiment has a configuration in which the outer diameter and the inner diameter are substantially uniform regardless of the position in the central axis direction A, but the configuration is not limited to this configuration, and for example, it faces the extraction direction A2. At least one of the outer diameter and the inner diameter may be gradually reduced or gradually increased. As shown in FIG. 1 and the like, the tubular portion as the connecting portion 4 of the present embodiment is inserted into the inside from the distal end of the medical tube 60 as a medical instrument, and the outer circumference of the tubular portion as the connecting portion 4 is inserted. The surface is brought into close contact with the inner peripheral surface of the medical tube 60 over the entire circumferential direction, so that the medical tube 60 is connected to the medical tube 60. In this connected state, the flow path 2a inside the tubular portion as the connection portion 4 communicates liquid-tightly with the flow path 60a of the medical tube 60.

[Regulatory wall 11]
Further, as shown in FIG. 2, the connector 1 of the present embodiment comes into contact with the gap holding portion 6 described later at the position of the removal direction A2 with respect to the male connector portion 2, so that the gap holding portion 6 is removed. It is provided with a regulation wall portion 11 that regulates movement to A2. Further, the tubular member 61 of the present embodiment includes a large diameter portion 13 having a diameter larger than that of the male connector portion 2 and located in the removal direction A2 with respect to the male connector portion 2 and the regulation wall portion 11. The outer peripheral surface of the male connector portion 2 and the outer peripheral surface of the large diameter portion 13 are continuous via an annular stepped surface extending in the radial direction B. The regulation wall portion 11 of the present embodiment is configured by this stepped surface. The regulation wall portion 11 may abut on the gap holding portion 6 in the central axis direction A and may be configured to restrict further movement of the gap holding portion 6 in the removal direction A2, and is limited to the stepped surface of the present embodiment. Absent. The regulation wall portion 11 may be formed of, for example, a surface on the insertion direction A1 side of a flange portion protruding outward in the radial direction B at the base end of the outer peripheral surface of the male connector portion 2.

[Cylindrical support 12]
Further, as shown in FIG. 2, the connector 1 of the present embodiment includes a tubular support portion 12 that supports the support portion 7 described later on the outer peripheral surface at a position in the removal direction A2 with respect to the large diameter portion 13. ing. Specifically, the tubular member 61 of the present embodiment includes the tubular support portion 12 located in the removal direction A2 with respect to the large diameter portion 13 in addition to the male connector portion 2 and the large diameter portion 13 described above. There is.

More specifically, as shown in FIG. 7, the tubular support portion 12 of the present embodiment is provided at a position outside the radial direction B with respect to the tubular portion as the connecting portion 4. In the present embodiment, a part of the central axis direction A of the tubular support portion 12 and a part of the central axis direction A of the tubular portion as the connecting portion 4 are formed at overlapping positions in the radial direction B. .. Further, the tubular portion as the connecting portion 4 protrudes from the tubular support portion 12 in the removal direction A2. Since the tubular support portion 12 of the present embodiment and the tubular portion as the connecting portion 4 have the above-mentioned positional relationship, the inner peripheral surface of the tubular support portion 12 and the tubular portion as the connecting portion 4 An annular hollow portion 14 is partitioned between the outer peripheral surface and the outer peripheral surface. The distal end of the medical tube 60 (indicated by the alternate long and short dash line in FIG. 7) into which the tubular portion as the connecting portion 4 is inserted is inserted into the annular hollow portion 14. As a result, the distal end portion of the medical tube 60 is sandwiched between the inner peripheral surface of the tubular support portion 12 and the outer peripheral surface of the tubular portion as the connecting portion 4. As a result, the medical tube 60 as a medical device can be more firmly fixed to the connector 1.

The width of the annular hollow portion 14 in the radial direction B may have a substantially uniform configuration regardless of the position of the central axis direction A, but may differ depending on the position of the central axis direction A. As shown in FIG. 7, the width of the annular hollow portion 14 of the present embodiment in the radial direction B has a region that gradually decreases toward the insertion direction A1. The width of the annular hollow portion 14 in the radial direction B is from the width equal to or larger than the wall thickness of the medical tube 60 in the natural state from the removal direction A2 side to the insertion direction A1 side in the above-mentioned gradually decreasing region. The width of the medical tube 60 has changed to less than the wall thickness. By providing such a region, the medical tube 60 can be more firmly fixed to the connection portion 4 while maintaining the ease of connection of the medical tube 60 to the connection portion 4. ..

The tubular member 61 of the present embodiment includes the male connector portion 2, the connection portion 4, the regulation wall portion 11, the large diameter portion 13, and the tubular support portion 12 described above, but the present invention is not limited to this configuration. It may be configured to include other parts having other functions. Further, in the present embodiment, the male connector portion 2, the connection portion 4, the regulation wall portion 11, the large diameter portion 13, and the tubular support portion 12 described above are composed of the tubular member 61. The above-mentioned portion may be composed of separate members.

<Engagement member 62>
As shown in FIG. 2 and the like, the engaging member 62 of the present embodiment includes the above-mentioned engaging portion 5. More specifically, the engaging member 62 of the present embodiment constitutes the above-mentioned engaging portion 5.

[Engagement part 5]
As shown in FIGS. 1 to 3, the connector 1 of the present embodiment includes two engaging portions 5. The two engaging portions 5 are composed of two engaging members 62 arranged so as to face each other with the male connector portion 2 interposed therebetween. The two engaging portions 5 of the present embodiment have the same configuration and are arranged point-symmetrically with respect to the central axis O. Hereinafter, for convenience of explanation, one engaging portion 5 of the present embodiment will be referred to as a “first engaging portion 5a”, and the other engaging portion 5 will be referred to as a “second engaging portion 5b”. Further, when the first engaging portion 5a and the second engaging portion 5b are not particularly distinguished, they are simply described as "engaging portion 5".

As shown in FIG. 4 and the like, the first engaging portion 5a of the present embodiment is a cover that covers a part of the circumferential direction C of the male connector portion 2 at a position outside the radial direction B of the male connector portion 2. A portion 15a and a protruding portion 16a projecting from the cover portion 15a toward the outer surface of the male connector portion 2 are provided.

As shown in FIG. 4 and the like, the cover portion 15a of the present embodiment has a plate-shaped main body portion 15a1 facing the male connector portion 2 and a second engagement of the main body portion 15a1 facing from one end side in the circumferential direction C. A plate-shaped first side wall portion 15a2 projecting toward the portion 5b and a plate-shaped second side wall portion 15a3 protruding toward the facing second engaging portion 5b from the other end side of the main body portion 15a1 in the circumferential direction C. And have.

As shown in FIG. 2, the cover portion 15a of the present embodiment includes a contact portion 17a that comes into contact with the gap holding portion 6 described later. The cover portion 15a of the present embodiment moves in the radial direction B by sliding the contact portion 17a with the gap holding portion 6. More specifically, in the present embodiment, a part of the end surface of the first side wall portion 15a2 on the second engaging portion 5b side and a part of the end surface of the second side wall portion 15a3 on the second engaging portion 5b side. Consists of the contact portion 17a. Further details of the contact portion 17a will be described later.

As shown in FIGS. 2 and 4, the second engaging portion 5b of the present embodiment is located outside the radial direction B of the male connector portion 2 and is a part of the circumferential direction C of the male connector portion 2. It is provided with a cover portion 15b for covering the cover portion 15b, and a protruding portion 16b protruding from the cover portion 15b toward the outer surface of the male connector portion 2.

As shown in FIGS. 2 and 4, the cover portion 15b of the present embodiment has a plate-shaped main body portion 15b1 facing the male connector portion 2 and a second main body portion 15b1 facing from one end side in the circumferential direction C. 1 A plate-shaped first side wall portion 15b2 projecting toward the engaging portion 5a and a plate-shaped second side wall portion 15b1 protruding toward the facing first engaging portion 5a from the other end side in the circumferential direction C of the main body portion 15b1. It is provided with a side wall portion 15b3.

As shown in FIG. 2, the cover portion 15b of the present embodiment includes a contact portion 17b that comes into contact with the gap holding portion 6 described later. The cover portion 15b of the present embodiment moves in the radial direction B by sliding the contact portion 17b with the gap holding portion 6. More specifically, in the present embodiment, a part of the end surface of the first side wall portion 15b2 on the first engaging portion 5a side and a part of the end surface of the second side wall portion 15b3 on the first engaging portion 5a side. Consists of the contact portion 17b. Further details of the contact portion 17b will be described later.

The first engaging portion 5a and the second engaging portion 5b of the present embodiment are the contact portion 17a of the end surface of the first side wall portion 15a2 of the first engaging portion 5a and the second side wall of the second engaging portion 5b. The retracted position (see FIG. 1) is realized by sandwiching the gap holding portion 6 between the contact portion 17b on the end surface of the portion 15b3 and the contact portion 17b. Further, the first engaging portion 5a and the second engaging portion 5b of the present embodiment are the contact portion 17a of the end surface of the second side wall portion 15a3 of the first engaging portion 5a and the second engaging portion 5b. The retracted position (see FIG. 1) is realized by sandwiching the gap holding portion 6 between the contact portion 17b on the end surface of the side wall portion 15b2. That is, the first engaging portion 5a and the second engaging portion 5b sandwich the gap holding portion 6 between the above-mentioned abutting portion 17a and the abutting portion 17b so that the gap G is not further close to each other. Is retained (see FIG. 1).

Further, as shown in FIG. 5, the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b of the present embodiment each have an end portion in the removal direction A2 on a support portion 7 described later. On the other hand, it is rotatably supported. Therefore, the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b are the rotation center shaft portions 15a4 (see FIG. 2) and 15b4 (see FIG. 2) of the end portions on the removal direction A2 side. ) As the central axis, the male connector portion 2 can be rotated in the radial direction B in the direction of approaching and separating from each other with the male connector portion 2 in between.

By moving the gap holding portion 6 sandwiched between the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b in the insertion direction A1, the cover portion 15a of the first engaging portion 5a and the cover portion 15a The cover portion 15b of the second engaging portion 5b can be rotated in a direction in which the cover portion 15b is separated in the radial direction B. By rotating the first engaging portion 5a and the second engaging portion 5b so as to be separated from each other in the radial direction B in this way, the first engaging portion 5a and the second engaging portion 5b are shown in FIG. It can be retracted to the maximum retract position.

Further, by moving the gap holding portion 6 sandwiched between the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b in the removal direction A2, the cover portion of the first engaging portion 5a The cover portion 15b of the 15a and the second engaging portion 5b can be rotated in the direction of approaching in the radial direction B.

In the present embodiment, by moving the gap holding portion 6 in the removal direction A2, the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b are brought closer to each other in the radial direction B. It can be rotated so that the cover portion 15a and the cover portion 15b are in contact with each other at a position closer to the insertion direction A1 than the gap holding portion 6 (see FIG. 3). In other words, in the present embodiment, by moving the gap holding portion 6 in the extraction direction A2, the first engaging portion 5a and the second engaging portion 5b are not held by the gap holding portion 6 (the gap G is not held). (See FIG. 3).

In the present embodiment, the portion of the end surface of the first side wall portion 15a2 of the cover portion 15a of the first engaging portion 5a on the insertion direction A1 side with respect to the gap holding portion 6 and which is closer to the insertion direction A1 than the contact portion 17a. , And, of the end faces of the second side wall portion 15b3 of the cover portion 15b of the second engaging portion 5b, the portion on the insertion direction A1 side of the contact portion 17b comes into contact with the cover portion 15a and the cover portion 15b. , A state in which the gap cannot be approached any more in the radial direction B, that is, a state in which the gap holding portion 6 does not hold the gap G. In the present embodiment, the state in which the gap holding portion 6 does not hold the gap G is a state in which the first engaging portion 5a and the second engaging portion 5b are in the engaging positions (see FIG. 3).

As described above, in the present embodiment, by moving the gap holding portion 6 along the central axis direction A, the gap G is held by the gap holding portion 6, and the retracted position of the engaging portion 5 ( (See FIG. 1) and the engaging position of the engaging portion 5 (see FIG. 3) in which the gap G is not held by the gap holding portion 6, the first engaging portion 5a and the second engaging portion 5a. The engaging portion 5b can be moved in the radial direction B.

As described above, the first engaging portion 5a includes a protruding portion 16a that protrudes in the radial direction B from the cover portion 15a toward the male connector portion 2 side. Further, the second engaging portion 5b includes a protruding portion 16b that protrudes in the radial direction B from the cover portion 15b toward the male connector portion 2 side. By moving the first engaging portion 5a and the second engaging portion 5b in the radial direction B as described above, the protruding portions 16a and 16b arranged to face each other also move in the radial direction B.

That is, the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b change the width of the gap G by changing the position where the gap holding portion 6 is sandwiched in the central axis direction A. , The distance between the protruding portion 16a and the protruding portion 16b and the male connector portion 2 in the radial direction B can be changed.

Specifically, in the present embodiment, the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b are closest to each other, that is, the gap G is not held by the gap holding portion 6. When the joint portion 5 is in the engaging position (see FIG. 3), the protruding portion 16a and the protruding portion 16b are in the closest state in the radial direction B. In other words, the protruding portion 16a and the protruding portion 16b are in the state of being closest to the outer wall of the male connector portion 2.

By separating the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b from the closest state (see FIG. 3), the protruding portion 16a and the protruding portion 16b are separated from each other in the radial direction B. Can be separated by. That is, the cover portion 15a of the first engaging portion 5a and the cover portion 15b of the second engaging portion 5b are in a state where the gap G is not held by the gap holding portion 6 and the engaging portion 5 is in the engaging position (FIG. 3). By changing the state from (see) to a state in which the gap G is held by the gap holding portion 6 and the engaging portion 5 is in the retracted position (see FIG. 1), the protruding portion 16a and the protruding portion 16b are moved in the radial direction B. Can be separated. As described above, in the present embodiment, the state in which the protruding portion 16a and the protruding portion 16b are most separated in the radial direction B is the maximum retracted position of the first engaging portion 5a and the second engaging portion 5b shown in FIG. It is in the state of.

The connector 1 of the present embodiment includes two engaging portions 5 that sandwich the male connector portion 2 and face each other in the radial direction B. However, the present invention is not limited to this configuration, and is not limited to this configuration, and is around the male connector portion 2 along the circumferential direction C. It may be a connector having three or more engaging portions 5 arranged in the same direction. Even if the connector includes three or more engaging portions 5, for example, the gap between the two engaging portions 5 adjacent to each other in the circumferential direction C may be held by the gap holding portion.

Next, the details of the contact portions 17a and 17b of the present embodiment will be described.

As shown in FIGS. 1 to 3, the contact portion 17a of the first engaging portion 5a and the contact portion 17b of the second engaging portion 5b of the present embodiment are sliding surfaces that slide with the gap holding portion 6. Consists of. The sliding surfaces constituting the abutting portion 17a and the abutting portion 17b are in the central axial direction A in a state where the first engaging portion 5a and the second engaging portion 5b are in the engaging positions (see FIG. 3). An inclined surface portion 18a and an inclined surface portion 18b that are inclined with respect to the inclined surface portion 18a are provided. The inclined surface portion 18a of the first engaging portion 5a and the inclined surface portion 18b of the second engaging portion 5b are at the same position in the central axis direction A. Further, in each of the inclined surface portion 18a of the first engaging portion 5a and the inclined surface portion 18b of the second engaging portion 5b, the first engaging portion 5a and the second engaging portion 5b are in the engaging positions (see FIG. 3). ), It is inclined so as to approach the central axis O toward the insertion direction A1. The gap holding portion 6 is sandwiched between the inclined surface portion 18a of the first engaging portion 5a and the inclined surface portion 18b of the second engaging portion 5b, and the inclined surface portion 18a and the second engaging portion of the first engaging portion 5a are engaged. By sliding with the inclined surface portion 18b of the portion 5b, the portion 5b moves along the central axis direction A.

Between the inclined surface portion 18a of the first engaging portion 5a and the inclined surface portion 18b of the second engaging portion 5b in a state where the first engaging portion 5a and the second engaging portion 5b are in the engaging position (see FIG. 3). The facing distance D1 (see FIG. 3) in the radial direction B of the above gradually decreases toward the insertion direction A1. Of the gap holding portion 6, the facing distance D1 of the later-described flange portion 25 (see FIG. 9 and the like) sandwiched between the inclined surface portion 18a of the first engaging portion 5a and the inclined surface portion 18b of the second engaging portion 5b. The maximum length D2 in the same direction (see FIG. 9) is larger than the minimum value of the facing distance D1 (in the present embodiment, the facing distance at the end of the insertion direction A1). Therefore, in the present embodiment, by moving the gap holding portion 6 between the inclined surface portion 18a and the inclined surface portion 18b in the insertion direction A1, the flange portion 25 (see FIG. 9 and the like) of the gap holding portion 6 becomes the inclined surface portion 18a. And slides on the inclined surface portion 18b, and pushes the first engaging portion 5a and the second engaging portion 5b in the radial direction B. As a result, the first engaging portion 5a and the second engaging portion 5b move so as to be separated from each other in the radial direction B.

Further, as shown in FIGS. 2, 3 and 6, the engaging portion 5 of the present embodiment is a locking portion 19 capable of locking the gap holding portion 6 in a retracted position (see FIG. 1). It has. Specifically, the locking portion 19 of the present embodiment is a maximum retracted position (see FIG. 1) in which the engaging portion 5 is most distant from the male connector portion 2 as one of the retracting positions of the engaging portion 5. The gap holding portion 6 is locked to regulate the movement of the gap holding portion 6 in the central axis direction A.

As shown in FIGS. 1, 2, 5, 6, and 8, the engaging portion 5 of the present embodiment regulates the movement of the gap holding portion 6 in the central axis direction A in the insertion direction A1. The abutting wall portion 20 and a second abutting wall portion 21 for restricting the movement of the gap holding portion 6 in the removal direction A2 in the central axis direction A are provided. The gap holding portion 6 can move in the range between the first abutting wall portion 20 and the second abutting wall portion 21 in the central axis direction A. The locking portion 19 of the present embodiment is provided so that the gap holding portion 6 does not move in the extraction direction A2 when the gap holding portion 6 is in contact with the first abutting wall portion 20 (see FIG. 8). Alternatively, the movement is restricted so as to move within a predetermined range in the removal direction A2. For example, when the gap holding portion 6 is pressed in the removal direction A2 with a predetermined pressing force or more, the locking portion 19 is pressed and deformed by the gap holding portion 6 so that the gap holding portion 6 can ride on. It can be configured by protrusions (see FIGS. 2, 3, etc.). By providing such a locking portion 19, it is possible to prevent the engaging portion 5 from being unintentionally displaced from the retracted position (see FIG. 1) to the engaging position (see FIG. 3). As shown in FIG. 3 and the like, the locking projection as the locking portion 19 of the present embodiment is formed on a convex rib as the separation regulating portion 23 described later. Details of the convex rib as the separation regulating portion 23 will be described later.

Further, as shown in FIGS. 1, 2, 5, and 6, the engaging portion 5 of the present embodiment can lock the gap holding portion 6 in the engaged position (see FIG. 3). A locking portion 22 is provided. Hereinafter, for convenience of explanation, in order to distinguish from the above-mentioned locking portion 19, the above-mentioned locking portion 19 is described as “first locking portion 19”, and the engaging portion 5 is located at the engaging position (see FIG. 3). The locking portion 22 capable of locking the gap holding portion 6 in a certain state is referred to as "second locking portion 22".

The second locking portion 22 of the present embodiment locks the gap holding portion 6 in a state where the engaging portion 5 is in the engaging position (see FIG. 3), and moves the gap holding portion 6 in the central axis direction A. To regulate. More specifically, the second locking portion 22 of the present embodiment prevents the gap holding portion 6 from moving in the insertion direction A1 when the gap holding portion 6 is in contact with the second abutting wall portion 21. The movement is restricted so as to move within a predetermined range in the insertion direction A1. The second locking portion 22 is deformed by, for example, pressing the gap holding portion 6 in the insertion direction A1 with a predetermined pressing force or more, so that the gap holding portion 6 can ride on the locking claw (see FIG. 1 and the like). Can be configured by. By providing such a second locking portion 22, it is possible to prevent the engaging portion 5 from being unintentionally displaced from the engaging position (see FIG. 3) to the retracted position (see FIG. 1).

Further, as shown in FIGS. 1, 2, and the like, the engaging portion 5 of the present embodiment includes a separation regulating portion 23 that engages with the gap holding portion 6 described later. Specifically, as shown in FIG. 2, a convex rib is provided on the outer surface of the first side wall portion 15a2 of the first engaging portion 5a, and the separation regulating portion 23 is formed by the rib. There is. Further, on the outer surface of the second side wall portion 15a3 of the first engaging portion 5a, the outer surface of the first side wall portion 15b2 of the second engaging portion 5b, and the outer surface of the second side wall portion 15b3 of the second engaging portion 5b. Is also provided with similar convex ribs. In the present embodiment, the separation restricting portion 23 is configured by these convex ribs. Although the details will be described later, when the gap holding portion 6 and the separation regulating portion 23 are engaged with each other, the first engaging portion 5a and the second engaging portion 5b do not sandwich the gap holding portion 6 in the radial direction. It is possible to regulate the separation to B.

The engaging member 62 of the present embodiment is configured to include the above-mentioned engaging portion 5, but may be configured to include other portions having other functions in addition to the engaging portion 5. Further, in the present embodiment, the above-mentioned engaging portion 5 is composed of the engaging member 62, but the present invention is not limited to this configuration, and for example, an engaging portion is integrally formed with the above-mentioned tubular member 61. You may. The engaging portion integrally formed with the tubular member 61 is, for example, projecting from the tubular member 61 and extending along the central axis direction A at a position outside the radial direction B of the male connector portion 2. However, it can be configured to include a main body portion that can swing in the radial direction B by elastic deformation, and a protruding portion that protrudes from the male connector portion 2 side of the main body portion. With such an engaging portion, by using the gap holding portion 6 of the present embodiment, the main body portion can be deformed in the radial direction B and the protruding portion can be moved in the radial direction B. That is, it is possible to realize an engaging portion that can be deformed between the engaging position (see FIG. 3) and the retracting position (see FIG. 1).

<Spacer member 63>
The spacer member 63 of the present embodiment includes the above-mentioned gap holding portion 6. More specifically, the spacer member 63 of the present embodiment constitutes the above-mentioned gap holding portion 6.

[Gap holding portion 6]
As shown in FIG. 2, the gap holding portion 6 of the present embodiment includes a tubular portion 24, a flange portion 25, and a claw portion 26.

The gap holding portion 6 of the present embodiment defines the through hole 24a. Further, the gap holding portion 6 can move along the central axis direction A in a state where the male connector portion 2 is located in the through hole 24a. More specifically, the tubular portion 24 of the gap holding portion 6 partitions the above-mentioned through hole 24a.

The gap holding portion 6 of the present embodiment has a tubular portion in addition to the flange portion 25 described later being in contact with the above-mentioned second abutting wall portion 21 (see FIG. 1 and the like) provided in the engaging portion 5. When the end of the removal direction A2 of 24 comes into contact with the above-mentioned regulation wall portion 11 (see FIG. 2 and the like), further movement in the removal direction A2 is restricted.

Although details will be described later, the end surface 24b of the tubular portion 24 in the insertion direction A1 is connected to another medical device 100 (see FIG. 10 or the like) provided with the female connector portion 101, and the tip surface 101b of the female connector portion 101 is connected. At the same time, the tip surface 101b presses the tip surface 101b toward the removal direction A2.

As shown in FIG. 2, the flange portion 25 is in the radial direction from the outer peripheral surface of the tubular portion 24 (since the radial direction of the tubular portion 24 is the same as the radial direction B of the male connector portion 2 in the present embodiment, the following , Simply referred to as "diameter B"). More specifically, the flange portion 25 of the present embodiment includes a plate-shaped first flange 27 projecting from the outer peripheral surface of the tubular portion 24 in one direction outside the radial direction B, and the first flange 27 and the cylinder. A plate-shaped second flange 28, which is formed at a position facing the radial direction B of the shaped portion 24 and protrudes in the opposite direction to the outer side of the radial direction B from the first flange 27, is provided.

As shown in FIG. 4, the plate-shaped first flange 27 extends from the tubular portion 24 toward the outer side in the radial direction B. More specifically, the plate-shaped first flange 27 is located outside the engaging portion 5 in the radial direction B, not between the plurality of engaging portions 5, from the position between the plurality of engaging portions 5. Until then. Further, as shown in FIG. 4, the plate-shaped second flange 28 also extends from the tubular portion 24 toward the outer side in the radial direction B. More specifically, the plate-shaped second flange 28 is located outside the engaging portion 5 in the radial direction B, not between the plurality of engaging portions 5, from the position between the plurality of engaging portions 5. Until then.

The gap G (see FIG. 1 and the like) is held by the plurality of engaging portions 5 described above by sandwiching the flange portion 25 of the gap holding portion 6. In the flange portion 25 of the present embodiment, the central axis direction A is the thickness direction, and the end faces located on both sides of the circumferential direction C are sandwiched between the first engaging portion 5a and the second engaging portion 5b.

More specifically, as shown in FIG. 4, the first flange 27 of the present embodiment includes the first side wall portion 15a2 of the first engaging portion 5a and the second side wall portion 15b3 of the second engaging portion 5b. It is sandwiched between. Further, as shown in FIG. 4, the second flange 28 of the present embodiment is placed between the second side wall portion 15a3 of the first engaging portion 5a and the first side wall portion 15b2 of the second engaging portion 5b. Be sandwiched. As a result, the gap G (see FIG. 1) between the first engaging portion 5a and the second engaging portion 5b can be maintained.

As shown in FIG. 2, the claw portion 26 of the present embodiment projects from the outer end portion of the flange portion 25 in the radial direction B toward the circumferential direction C.

Specifically, as shown in FIGS. 2 and 4, the claw portion 26 of the present embodiment protrudes from the outer end portion of the first flange 27 in the radial direction B toward one of the circumferential directions C, and is the first. From the first claw 29a that engages with the convex rib as the separation restricting portion 23 of the first side wall portion 15a2 of the engaging portion 5a and the outer end portion of the first flange 27 in the radial direction B, in the circumferential direction C. It is provided with a second claw 29b that projects toward the other side and engages with a convex rib as a separation restricting portion 23 of the second side wall portion 15b3 of the second engaging portion 5b.

As shown in FIG. 9, the convex rib as the separation restricting portion 23 of the first side wall portion 15a2 of the first engaging portion 5a and the separation regulating portion 23 of the second side wall portion 15b3 of the second engaging portion 5b. The convex rib is located between the first claw 29a and the second claw 29b. Therefore, even if the first engaging portion 5a and the second engaging portion 5b try to separate in the radial direction B, the first claw 29a and the second claw 29b come into contact with each other, and the first side wall portion 15a2 of the first engaging portion 5a And the second side wall portion 15b3 of the second engaging portion 5b are not further separated in the radial direction B.

Further, as shown in FIGS. 2 and 4, the claw portion 26 of the present embodiment protrudes from the outer end portion of the second flange 28 in the radial direction B toward one of the circumferential directions C, and is engaged in the second engagement. From the outer end of the second flange 28 in the radial direction B to the other of the circumferential direction C, the first claw 30a that engages with the convex rib as the separation restricting portion 23 of the first side wall portion 15b2 of the portion 5b. A second claw 30b that protrudes toward the surface and engages with a convex rib as a separation restricting portion 23 of the second side wall portion 15a3 of the first engaging portion 5a is further provided.

As shown in FIG. 9, the convex rib as the separation restricting portion 23 of the second side wall portion 15a3 of the first engaging portion 5a and the separation regulating portion 23 of the first side wall portion 15b2 of the second engaging portion 5b. The convex rib is located between the first claw 30a and the second claw 30b. Therefore, even if the first engaging portion 5a and the second engaging portion 5b try to separate in the radial direction B, the first claw 30a and the second claw 30b come into contact with each other, and the second side wall portion 15a3 of the first engaging portion 5a And the first side wall portion 15b2 of the second engaging portion 5b are not further separated in the radial direction B.

By providing the claw portion 26 in the gap holding portion 6 in this way, it is possible to regulate the distance at which the first engaging portion 5a and the second engaging portion 5b can be separated. As a result, it is possible to restrict the engaging portion 5 from moving outward in the radial direction B without sandwiching the gap holding portion 6. Therefore, it is possible to suppress an unintended excessive rotation of the engaging portion 5, reduce the load acting on the vicinity of the rotation center shaft portion, and improve the durability of the connector 1. Further, when the connector 1 is connected to another medical device 100 (see FIG. 10 or the like), it is difficult to connect because the first engaging portion 5a and the second engaging portion 5b are excessively separated. It is possible to suppress the situation. Thereby, the operability of the connector 1 can be improved.

Further, in the gap holding portion 6 of the present embodiment, the gap G between the first engaging portion 5a and the second engaging portion 5b can be held by interposing the flange portion 25, and the claw portion 26 is caught. As a result, it is possible to prevent the gap G between the first engaging portion 5a and the second engaging portion 5b from becoming excessively large. That is, according to the gap holding portion 6 of the present embodiment, the followability of the first engaging portion 5a and the second engaging portion 5b with respect to the movement of the gap holding portion 6 can be improved, and the movement of the gap holding portion 6 causes the gap holding portion 6 to follow. , The movement of the engaging portion 5 between the retracted position (see FIG. 1) and the engaging position (see FIG. 3) can be realized more reliably.

However, when the plurality of engaging portions 5 are constantly urged to approach each other, the claw portions 26 of the present embodiment may not be provided. On the contrary, when the plurality of engaging portions 5 are constantly urged so as to be separated from each other, the flange portion 25 of the present embodiment is interposed between the plurality of engaging portions 5, but a plurality of engaging portions 5 are engaged. It does not have to be sandwiched between the joints 5. In this case, for example, a part of the engaging portion 5 such as the claw portion 26 (see FIG. 9 and the like) of the gap holding portion 6 of the present embodiment (in this embodiment, the separation regulating portion 23 (see FIG. 9 and the like)). By engaging with the above, a movement restricting portion for restricting the distance between the plurality of engaging portions 5 by a predetermined distance or more may be provided.

The spacer member 63 of the present embodiment is configured to include the gap holding portion 6 described above, but may be configured to include other portions having other functions in addition to the gap holding portion 6.

<Support member 64>
As shown in FIG. 2 and the like, the support member 64 of the present embodiment includes the above-mentioned support portion 7. More specifically, the support member 64 of the present embodiment constitutes the above-mentioned support portion 7.

[Support 7]
The support member 64 constituting the support portion 7 of the present embodiment defines a through hole 31 penetrating in the central axis direction A, and the tubular support portion 12 of the tubular member 61 is fitted in the through hole 31. By doing so, it is supported on the outer surface of the tubular support portion 12. The natural outer diameter of the tubular support portion 12 of the tubular member 61 is smaller than the inner diameter of the through hole 31 of the support member 64. Therefore, the inner peripheral surface of the through hole 31 is in close contact with the outer peripheral surface of the tubular support portion 12 in the entire circumferential direction C, and the tubular support portion 12 is compressed toward the inside in the radial direction B. As a result, the medical tube 60 (see FIG. 1 and the like) interposed between the inner peripheral surface of the tubular support portion 12 and the outer peripheral surface of the tubular portion as the connection portion 4 described above is more firmly sandwiched. be able to.

Further, the support portion 7 rotatably supports the engaging portion 5. Specifically, the support portion 7 of the present embodiment is rotatably attached to the rotation center shaft portion 15a4 of the first engagement portion 5a and the rotation center shaft portion 15b4 of the second engagement portion 5b, respectively. The shaft support portion 32 is provided. As a result, the first engaging portion 5a and the second engaging portion 5b are rotatable with respect to the support portion 7, and as a result, the retracted position (see FIG. 1) and the engaging position (see FIG. 3) are set. You can move between.

Further, the support portion 7 of the present embodiment has a quadrangular outer shape in a cross section orthogonal to the central axis direction A, and is provided with four flat portions on the outer outer wall surface in the radial direction B. By making the support portion 7 have such an outer shape, a medical worker such as a doctor can easily grip the connector 1 by gripping the outer wall surface of the support portion 7. Therefore, the operability of a medical worker such as a doctor can be improved during the connection operation of connecting the connector 1 to another medical device 100 (see FIG. 10 or the like).

The support member 64 of the present embodiment is configured to include the above-mentioned support portion 7, but may be configured to include other portions having other functions in addition to the support portion 7. Further, in the present embodiment, the above-mentioned support portion 7 is composed of the support member 64, but the present invention is not limited to this configuration, and for example, the support portion may be integrally formed with the above-mentioned tubular member 61. .. That is, the engaging member 62 constituting the engaging portion 5 may be rotatably attached to the tubular member 61.

Next, with reference to FIGS. 10 to 12, details of the connection operation between the connector 1 of the present embodiment and another connector as another medical device 100 will be described. FIG. 10 is a diagram showing a separated state before the connector 1 and the other medical device 100 are connected. FIG. 11 is a diagram showing a state in which the connector 1 and the other medical device 100 are in the process of being connected. FIG. 12 is a diagram showing a state in which the connection between the connector 1 and the other medical device 100 is completed. Hereinafter, for convenience of explanation, the connector 1 of the present embodiment will be referred to as a “male connector 1”, and the connector as another medical device 100 will be referred to as a “female connector 100”.

First, an outline of the configuration of the female connector 100 shown in FIGS. 10 to 12 will be described. The female connector 100 includes a female connector portion 101 into which the male connector portion 2 of the male connector 1 of the present embodiment can be inserted. More specifically, the female connector portion 101 has a housing 102 for partitioning an insertion port 101a into which the male connector portion 2 can be inserted, and an elastic valve body 104 having a slit 103 and arranged in the insertion port 101a. I have. When the male connector portion 2 of the male connector 1 is inserted into the insertion port 101a, the slit 103 of the elastic valve body 104 of the female connector 100 is opened, and the flow path 2a of the male connector 1 and the flow of the female connector 100 connected to the insertion port 101a are opened. The road 105 and the road 105 communicate with each other in a liquid-tight manner.

Next, the details of the connection operation between the male connector 1 and the female connector 100 of the present embodiment will be described.

As shown in FIG. 10, the central axis O of the male connector portion 2 of the male connector 1 is arranged so as to substantially coincide with the central axis of the female connector portion 101 of the female connector 100. In this state, the male connector 1 and the female connector 100 move in the direction of approaching each other. More specifically, a medical worker such as a doctor holds the male connector 1 with one hand and the female connector 100 with the other hand, and brings both hands closer to each other toward the central axis direction A. Or, bring one of both hands closer to the other. At this time, by gripping the male connector 1 at the position of the support portion 7, it is easy to hold the male connector 1. Further, with respect to the female connector 100, the outer wall of the housing 102 can be gripped.

In the state before connection shown in FIG. 10, the engaging portion 5 of the male connector 1 is in the retracted position (see FIG. 1 and the like).

From the state of FIG. 10, the male connector 1 and the female connector 100 are brought closer to each other in the central axis direction A, and the male connector portion 2 of the male connector 1 is inserted into the insertion port 101a of the female connector portion 101 of the female connector 100. Then, when the tip of the male connector portion 2 of the male connector 1 is inserted to a predetermined position inside the female connector 100, the end surface 24b of the tubular portion 24 of the gap holding portion 6 of the male connector 1 on the insertion direction A1 side becomes. , It comes into contact with the tip surface 101b of the female connector portion 101 of the female connector 100. The end face 24b is located at a position deviated by about 90 degrees in the circumferential direction C from the cross section shown in FIGS. 10 to 12 (see FIG. 2). Therefore, in FIGS. 10 to 12, for convenience of explanation, the outer shape of the cross section of the tubular portion 24 including the end face 24b at a position deviated by 90 degrees in the circumferential direction C is shown by a two-dot chain line.

The engaging portion 5 of the male connector 1 is in the maximum retracted position shown in FIG. 1 even in the state shown in FIG. Therefore, from the state shown in FIG. 10 to the state shown in FIG. 11, the protruding portion 16a of the first engaging portion 5a and the protruding portion 16b of the second engaging portion 5b do not interfere with the female connector 100, and the male connector portion. 2 can be inserted into the female connector portion 101.

From the state of FIG. 11, when the male connector portion 2 of the male connector 1 is further inserted in the insertion direction A1 relative to the female connector 100, the end surface 24b of the tubular portion 24 of the gap holding portion 6 is formed. , Pressed by the tip surface 101b of the female connector portion 101 of the female connector 100. As a result, the gap holding portion 6 moves in the removal direction A2 with respect to the male connector portion 2 and the engaging portion 5.

When the gap holding portion 6 moves from the state shown in FIG. 11 in the removal direction A2, the first engaging portion 5a and the second engaging portion 5b are the rotation central shaft portions 15a4 and 15b4 attached to the support portion 7. Rotates with respect to. Specifically, when the gap holding portion 6 moves from the state shown in FIG. 11 in the removal direction A2, the engaging portion 5 of the present embodiment rotates and moves so as to approach the male connector portion 2 in the radial direction B. To do.

Then, the protruding portion 16a of the first engaging portion 5a and the protruding portion 16b of the second engaging portion 5b are the female connectors of the female connector 100 when the male connector portion 2 is inserted to a predetermined depth in the female connector portion 101. It comes into contact with the outer wall of the portion 101 and locks the female connector portion 101. More specifically, the protruding portion 16a of the first engaging portion 5a and the protruding portion 16b of the second engaging portion 5b are engaged to be formed on the outer wall of the female connector portion 101 and project outward in the radial direction B. It comes into contact with the outer wall of the female connector portion 101 on the insertion direction A1 side of the protrusion 106, and the connection is completed (see FIG. 12). As shown in FIG. 12, when the connection between the male connector 1 and the female connector 100 is completed, the protruding portion 16a of the first engaging portion 5a and the protruding portion 16b of the second engaging portion 5b are connected to the engaging protrusion 106. It is located on the insertion direction A1 side and prevents the engaging protrusion 106 from moving toward the insertion direction A1. That is, the protrusion 16a of the first engaging portion 5a, the protruding portion 16b of the second engaging portion 5b, and the engaging protrusion 106 move the male connector portion 2 in the removal direction A2 from the female connector portion 101. Is hindered, and the male connector 1 and the female connector 100 are firmly connected.

According to the male connector 1 of the present embodiment, when the male connector 1 is connected to the female connector 100, the protruding portion 16a is reached until the tip of the male connector portion 2 is inserted to a predetermined depth in the female connector portion 101. And the protruding portion 16b can be prevented from interfering with the female connector portion 101 in the central axis direction A. On the other hand, in the above-mentioned predetermined state, the protruding portion 16a and the protruding portion 16b can be moved to a position where they interfere with the female connector portion 101 in the central axis direction A. The above-mentioned "predetermined state" in the present embodiment means that the position of the engaging protrusion 106 of the female connector 100 is relatively closer to the removal direction A2 with respect to the positions of the protruding portion 16a and the protruding portion 16b of the male connector 1. It is in a state of becoming.

Next, the infusion set 200 including the male connector 1 of the present embodiment will be described with reference to FIG. FIG. 13 is a diagram showing an infusion set 200. Since the details of the male connector 1 have been described above, the description thereof will be omitted here.

The infusion set 200 can form an infusion line that connects an infusion holder such as an infusion bag (not shown in FIG. 13) to an indwelling needle (not shown in FIG. 13). Specifically, the infusion set 200 includes a medical tube 201, a bottle needle 202 that can be pierced by the infusion holder, a drip tube 203 that can visually check the flow rate of a liquid such as a chemical solution supplied from the infusion holder, and medical treatment. An adjustment clamp 204 that can change the flow rate of the liquid in the medical tube 201 to a plurality of states, an occlusion clamp 205 that occludes the medical tube 201, and a distal end of the medical tube 201 (downstream end of the infusion line). ) Is provided with a male connector 1 connected to).

The distal end of the medical tube 201 is fixed to the male connector 1 by being connected to the connection portion 4 of the male connector 1. The medical tube 201 and the male connector 1 are liquid-tightly connected. That is, the male connector 1 constitutes the distal end of the infusion line composed of the infusion set 200.

The infusion set 200 is composed of the above-mentioned constituent members, but is limited to the above-mentioned configuration as long as it includes at least a medical tube and a male connector 1 connected to one end of the medical tube. I can't. Therefore, for example, a configuration including a plurality of medical tubes and a medical connector different from the male connector 1 for connecting the plurality of medical tubes, or a configuration other than the constituent members included in the infusion set 200 described above. It may be an infusion set including members.

As described above, the medical connector according to the present invention can be realized by various specific configurations, and is not limited to the configuration shown in the above-described embodiment, and the gist of the invention described in the claims is described. Various modifications are possible within a range that does not deviate. For example, an urging member such as a coil spring may be further provided to urge the gap holding portion 6 of the above-described embodiment on the insertion direction A1 side. In this way, in the male connector 1 that is not connected to the female connector 100 (see FIG. 10 and the like), the engaging portion 5 can be easily maintained in the retracted state (see FIG. 1), and the connection with the female connector 100 can be easily maintained. It can be configured to be easy to connect at times.

The present disclosure relates to medical connectors.

1: Medical connector (male connector)
2: Male connector part 2a: Flow path 3: Locking mechanism 4: Connecting part 5: Engaging part 5a: First engaging part 5b: Second engaging part 6: Gap holding part 7: Support part 11: Regulatory wall Part 12: Cylindrical support part 13: Large diameter part 14: Hollow part 15a, 15b: Cover part 15a1, 15b1: Main body part 15a2, 15b2: First side wall part 15a3, 15b3: Second side wall part 15a4, 15b4: Rotation Central shaft portions 16a, 16b: protruding portions 17a, 17b: contact portions (sliding surface)
18a, 18b: Inclined surface portion 19: First locking portion 20: First abutting wall portion 21: Second abutting wall portion 22: Second locking portion 23: Separation regulating portion 24: Cylindrical portion 24a: Through hole 24b: End face 25: Flange part 26: Claw part 27: First flange 28: Second flange 29a: First claw 29b of the first flange: Second claw 30a of the first flange: First claw 30b of the second flange: 2nd claw 31 of the second flange: Through hole 32: Shaft support portion 60: Medical tube 60a: Flow path 61: Cylindrical member 62: Engagement member 63: Spacer member 64: Support member 100: Female connector (other Medical equipment)
101: Female connector 101a: Insertion 101b: Tip surface 102: Housing 103: Slit 104: Elastic valve body 105: Flow path 106: Engagement protrusion 200: Infusion set 201: Medical tube 202: Bottle needle 203: Drip tube 204: Adjustment clamp 205: Closing clamp A: Central axis direction of male connector A1: Insertion direction A2: Removal direction B: Male connector radial direction C: Male connector circumferential direction D1: Between engaging parts Opposing distance D2: Maximum length of the gap holding portion sandwiched between the first engaging portion and the second engaging portion in the same direction as the facing distance between the engaging portions G: Gap between a plurality of engaging portions O: Central axis of male connector

Claims (6)

Male connector part and
A locking mechanism for locking the female connector portion while the male connector portion is inserted into the female connector portion of another medical device is provided.
The locking mechanism is
An engaging position located outside the male connector portion in the radial direction and capable of engaging with the female connector portion in a state where the male connector portion is inserted, and outside the engaging position in the radial direction. A plurality of engaging portions that can be moved or deformed between the retracted retracted positions, and
A gap holding portion that is interposed between the plurality of engaging portions and holds a gap between the plurality of engaging portions is provided.
The gap holding portion changes the gap by engaging with the female connector portion when the male connector portion is inserted into the female connector portion and moving along the central axis direction of the male connector portion. A medical connector for moving the plurality of engaging portions from the retracted position to the engaging position. The medical connector according to claim 1, wherein the engaging portion includes a locking portion capable of locking the gap holding portion while in the retracted position. The medical connector according to claim 1, wherein the engaging portion includes a locking portion capable of locking the gap holding portion while in the engaging position. The gap holding portion partitions the through hole and
The medical connector according to any one of claims 1 to 3, wherein the gap holding portion can move along the central axis direction in a state where the male connector portion is located in the through hole. The gap holding portion can move along the central axis direction by sliding with the sliding surfaces of the plurality of engaging portions.
The medical treatment according to any one of claims 1 to 4, wherein the sliding surface includes an inclined surface portion that is inclined with respect to the central axis direction in a state where the engaging portion is in the engaging position. Connector for. A claim that the engaging portion is movable or deformable between the retracted position and the engaging position by rotating the tip side in the central axis direction in the radial direction with respect to the base end side. Item 4. The medical connector according to any one of Items 1 to 5.

Images