JP4292145B2 - Lock connector device for channel communication - Google Patents

Description

  The present invention relates to a connector device used for connecting a liquid channel, in particular, a liquid channel by connecting a connection port used for a medical container such as an infusion bag used for infusion therapy and a lock connector. The present invention relates to a flow path communication lock connector device for connecting and maintaining the state.

  The connection port of a medical container such as an infusion bag used in infusion therapy is provided with a stopper, and in order to take out the liquid in the container, the infusion tube must be connected to the medical container through the stopper. I must. Conventionally, a connector structure that connects a medical container and an infusion tube by providing a bottle needle at the tip of the infusion tube and puncturing the bottle needle into the stopper is used for such connection. In actual use, there may be a force that separates them from each other, so that the bottle needle is temporarily fixed to the container so that the connection is not disconnected during the infusion, and the connection state is maintained. (Lock mechanism) is used.

Patent Document 1 describes a connector device including first and second connector members configured to be detachable from each other. The first connector member is connected to the tip of the infusion tube, and the second connector member is used as a connection port of the medical container. The first connector member has a tubular tip end portion and a base end portion, and the base end portion can be connected to an infusion tube. The second connector member (connection port) has a cylindrical portion into which the distal end portion of the first connector member can be inserted, and the rear end portion of the cylindrical portion is coupled to the medical container. The first connector member has an engaging portion that is attached to the side portion thereof, extends along the axial direction, and has a locking claw that protrudes inward at the tip. The second connector member has a locking groove that engages with a locking claw of the first connector member on the peripheral surface of the cylindrical portion. By inserting the distal end portion of the first connector member into the cylindrical portion of the second connector member, the liquid flow path communicates, and at the same time, the engaging claw and the engaging groove engage with each other, whereby the first connector member And the connection of the second connector member is locked.
JP-A-8-243171

  In the connector device described in Patent Document 1, in the state where the connection between the first connector member and the second connector member (connection port) is released, the second connector member, which is the connection port, is open. The inside of the container is exposed to the outside of the container. Therefore, when releasing the connection by the connector device, it is necessary to first operate a clamp (clamp) for closing the conduit between the connection port and the medical container, and then take a procedure for releasing the connection. . Moreover, in order to prevent contamination of the tip of the second connector member, a protective cap is attached to the tip. Therefore, when connecting the connector device, after removing the protective cap from the second connector member, an operation to connect to the first connector member is performed, and then the stopper must be removed. As described above, the conventional connector device takes time to attach and detach.

  On the other hand, the present inventors provide a septum having a slit in the connection port, and the lock connector connected to the connection port is provided with a tubular member that penetrates the septum and connects the flow path when connected. The structure which provided the latching mechanism for hold | maintaining a connection state was conceived. Thereby, in the state where the connection of the connector device is cut off, the slit is closed and the flow path is sealed by the septum. When connecting, the function of easily connecting the flow path through the slit can be obtained. Therefore, when attaching / detaching the connector device, it is possible to easily perform the connecting operation without requiring the attaching / detaching operation of the protective cap and the attaching / detaching operation of the stopper.

  On the other hand, for example, when using an infusion bag as a medical container, there is an application in which a lock connector with an infusion tube is connected in advance to the connection port. That is, in order to prevent an error in the connection location, the connector device is used in a connected state, and is used in a usage form in which the connection is released after performing a predetermined operation. In that case, in the connector device using the connection port with the septum, the tubular portion of the lock connector is stored in a state of being inserted through the septum. As a result, permanent deformation of the septum occurs, and when the connection is released, the slit may not be restored and a hermetic failure may occur.

  Therefore, the present invention includes a lock mechanism that maintains the connection state between the connection port with the septum and the lock connector, and even when stored in the connection state, it is possible to avoid the occurrence of airtight defects due to permanent deformation of the septum. An object of the present invention is to provide a lock connector device for communicating with a flow passage.

  The lock connector according to the present invention has a tubular portion whose distal end portion is tubular and whose proximal end portion is connectable to an infusion tube, and is coupled to both side portions of the tubular body portion and extends along the axial direction of the tubular body portion. A lock connector having a pair of lock levers formed with locking claws projecting inwardly at the tip thereof, a tubular port body into which the tip of the lock connector can be inserted, and a peripheral surface of the port body The lock lever has a stepped portion that can be engaged with the locking claw, and a base port side of the port body includes a connection port that can be coupled to a communication target, and the distal end of the lock connector is connected to the port of the connection port By inserting into the inner cavity of the main body and engaging the locking claw and the stepped portion, the connection port and the lock connector are connected by connecting the liquid flow path.

In order to solve the above-described problem, the connection port includes a flexible partition member provided at a distal end portion of the port main body and sealing a lumen of the port main body, and the stepped portion is formed on the port main body. A first step portion located on the distal end side and a second step portion located on the proximal end side, with the distal end of the tube body portion of the lock connector facing the distal end of the port body, and locking the lock lever It is possible to take a first connection state in which a claw is engaged with the first stepped portion and a second connection state in which a locking claw of the lock lever is engaged with the second stepped portion. . In the second connection state, the lock connector is connected to the connection port at a position where the distal end portion of the tube portion of the lock connector enters the partition member to form an opening having a sufficient size as an infusion channel. In the first connection state, the distal end portion of the tube portion of the lock connector does not enter the partition member, or the position where the tip of the lock connector enters shallower than that in the second connection state. The connection of the lock connector is maintained , the connection port has a position restricting stepped portion on a proximal end side with respect to the second stepped portion, and the locking claw of the lock lever is engaged with the first stepped portion. in the state, the by interposing the position regulating piece between the outer tip of the lock connector with the position restricting stepped portions, to become the second connection state Ru is prevented.

  According to this configuration, since the connection port has the partition member, the connection operation can be easily performed without attaching / detaching the protective cap and attaching / detaching the clamp when the connector device is attached / detached. In addition, if the connection form is configured in two stages and the first connection state is at the engagement position between the first stepped portion and the locking claw, the permanent deformation of the partition wall member during storage is avoided. It is possible.

  In the lock connector device for channel communication according to the present invention having the above-described configuration, the distal end portion of the tube portion of the lock connector may be in contact with the partition member in the first connection state.

  Preferably, the lock connector has a pair of support pieces coupled to the side portion of the tube body portion, and the lock lever is supported by the support piece at a center portion along the axial direction of the tube body portion. Extending, a locking piece having the locking claw is formed on the tip side from the support part, and an operation piece is formed on the rear end side from the support part, approaching the tube body part with respect to the operation piece By applying a pressing force in such a direction as to cause the support piece to elastically deform, the engagement claw of the pair of lock levers is widened and the engagement with respect to the first step portion or the second step portion is increased. The engagement of the pawl is released.

  The position restricting piece can be constituted by a ring-shaped stopper in which a part of the ring is cut out.

  Further, in the lock connector device for channel communication according to the present invention, preferably, the lock connector is held by a side portion of the tube body portion and surrounds a distal end portion of the tube body portion, and a pair of cutout portions is formed on the side wall thereof. And a portion of the locking piece in the vicinity of the locking claw is disposed in the cutout portion of the hood, and the distal end portion of the locking connector is the lumen of the port body of the connection port. When inserting into the hood, the tip of the port body can be accommodated in the hood.

  Preferably, the cutout portion formed in the side wall of the hood is closed at the front end side, and the front end of the locking piece of the lock lever is surrounded by the front end portion of the hood.

Preferably, in this configuration, the outer tip of the locking connector, the is formed by the tip portion of the hood, in a state where the locking pawl of the previous SL lock lever engaged with the first stepped portion, the lock by interposing the position regulating piece between the hood front end of the connector the position restricting stepped portion, it is prevented to be the second connection state.

  Preferably, the partition member has a slit, and when the second connection state is established, the distal end portion of the tubular body portion of the lock connector enters the partition member through the slit.

  Preferably, in the first connection state, the distal end portion of the tube portion of the lock connector is in contact with the partition member, and the slit is at least partially opened by the pressing force.

  As apparent from the above description, in the second connection state, an opening having a sufficient size as an infusion channel is formed in the partition wall member by the distal end portion of the tubular body portion of the lock connector, and normal infusion is performed. It is in a usable state. On the other hand, the first connection state is a state in which the distal end portion of the tube portion of the lock connector does not enter the partition wall member or enters shallower than the second connection state, and is used for normal infusion. It is not possible. Therefore, the amount of deformation of the partition member is small. In such a state, it is possible to avoid the permanent deformation of the partition member even if it is held for a long time. Accordingly, in the first connection state, the distal end portion of the tube portion of the lock connector is in contact with the partition member, or the slit of the partition member is slightly opened by the pressing force due to the contact. Is also possible.

  The configuration of the channel connection lock connector device according to the embodiment of the present invention will be described more specifically with reference to the drawings. The lock connector device in the present embodiment is configured by a combination of the lock connector 10 shown in FIGS. 1 to 4 and the connection port shown in FIGS. 5 and 6.

  First, the structure of the lock connector 10 will be described with reference to FIGS. As shown in the side view of FIG. 1, the lock connector 10 has a tube portion 1 at the center. Although FIG. 1 shows only the base end portion 1a of the tube portion 1, the tube portion 1 further has a distal end portion 1b as can be seen from the cross-sectional view shown in FIG. An infusion tube (not shown) can be connected to the base end portion 1a in use. The distal end portion 1b passes through a septum (partition wall member) provided in a connection port such as a medical container and is inserted into the lumen of the connection port.

  A substantially cylindrical hood 2 is disposed so as to surround the distal end portion 1b of the tubular body portion 1. The hood 2 is coupled to the axially central portion of the tube portion 1 on the base end side. The connecting portion 3 between the hood 2 and the tube portion 1 is shown in the plan view of FIG. 3 or the front view of FIG. As clearly shown in FIG. 3, the hood 2 has a notch 2 a formed in a cylindrical side wall thereof. FIG. 2 shows an AA cross section in FIG.

  As shown in FIGS. 2 and 4, support pieces 4 a, 4 b, 5 a, and 5 b are formed in the central portion of the tube body portion 1 in addition to the hood 2, and the directions are orthogonal to the axis of the tube body portion 1. It extends to. In FIG. 4, the support pieces 4a, 4b, 5a, and 5b are hatched for easy viewing. Reference numeral 6 denotes a lock lever. As clearly shown in FIG. 2, a pair of lock levers 6 are arranged on the side portion of the tubular body portion 1 and extend along the axial direction of the tubular body portion 1. The central portion of the lock lever 6 is coupled to the tips of the support pieces 4 a, 4 b, 5 a, 5 b, thereby being supported at a predetermined position with respect to the tubular body portion 1. The support pieces 4a and 4b support one lock lever 6 as a set, and the support pieces 5a and 5b support the other lock lever 6 as a set. Accordingly, a pair of support pieces is substantially provided corresponding to each lock lever 6.

  As for the lock lever 6, the front end side seen from the coupling | bond part with support piece 4a, 4b, 5a, 5b comprises the locking piece 6a, and the base end side comprised the operation piece 6b. The locking piece 6a has a locking claw 7 protruding inward at the tip. The locking piece 6 a is disposed in the cutout portion 2 a of the hood 2, and the outer surface thereof is substantially flush with the outer surface of the hood 2 as shown in FIGS. 3 and 4. Moreover, since the front end side of the notch 2a is closed, the front end of the locking piece 6a of the lock lever 6 is surrounded by the hood 2 in a plan view, and the possibility of receiving contact during use is reduced.

  Applying pressure to the operation piece 6b in the lock lever 6 so as to sandwich the operation pieces 6b of the pair of lock levers 6 shown in FIG. 1 or FIG. As a result, the support pieces 4a, 4b, 5a and 5b are flexibly deformed. As a result, the lock lever 6 rotates about the vicinity of the joint with the support pieces 4a, 4b, 5a, and 5b, and the distance between the pair of locking claws 7 increases.

  As shown in FIGS. 2 and 4, a positioning portion 8 is provided in the vicinity of the coupling portion between the tubular body portion 1 and the hood 2. The positioning portion 8 is arranged in a cross shape around the tube portion 1 in the hood 2, and a member around the portion where the tube portion 1 is to be inserted in the connection port to be connected enters the hood 2. Sometimes it has a function of abutting and positioning on the tip of the connection port. Thereby, it can suppress that the insertion state of the tube part 1 wobbles, and can obtain the stable connection state.

  Further, as shown in FIGS. 1 and 3, a grip portion 2 b is formed on the base end side of the hood 2 by partially deforming the cylindrical surface to be flat. The grip portion 2b is provided to increase the ease of operation by gripping and operating this portion when performing a connector connection operation.

  Each of the above elements is preferably configured as an integrated member. The material is required to have a degree of hardness necessary for penetrating the septum through the tube portion 1 and elasticity (flexibility) necessary for connection / disconnection operation. For example, polycarbonate, polypropylene and the like are suitable.

  Next, the structure of the connection port 11 to which the lock connector 10 is connected will be described with reference to FIGS. 5 is a side view of the connection port 11, FIG. 6 is a sectional view, and FIG. 7 is a front view. The connection port 11 includes a tubular port body 12, a septum 13 that is a partition member made of a flexible material, and a port cap 14.

  The inner cavity of the distal end side of the port body 12 forms a throat portion into which the distal end portion 1b of the lock connector 10 can be inserted. A port cap 14 is attached to the distal end of the throat portion with a septum 13 interposed. Yes. The septum 13 seals the distal end portion of the port body 12 and is held by the inner surface of the edge convex portion 15 at the distal end of the port body 12 and the distal end of the port cap 14. In order to ensure the holding of the septum 13, a projection 12 a is formed at the tip of the port body 12, and a projection 15 a is also formed on the inner surface of the edge convex portion 15 of the port cap 14, and the projection 12 a and the projection 15 a form a septum. 13 is sandwiched.

  As shown in FIG. 7, the septum 13 is exposed from an insertion hole 15b formed at the center of the edge convex portion 15 at the tip of the port cap 14, and has a slit 13a at the exposed portion. The distal end portion 1b of the lock connector 10 can pass through the slit 13a of the septum 13 through the insertion hole 15a, whereby the liquid flow path communicates.

  A locking convex portion 12 b is formed on the outer peripheral surface of the front end of the port body 12, and is engaged with a locking concave portion 14 a formed in the port cap 14. Thereby, the port cap 14 is held with respect to the port body 12. The proximal end side of the port body 12 has a larger diameter than the distal end side, and a flange 16 is formed at the boundary between the distal end side and the proximal end side. The proximal end side of the port body 12 is attached to a medical container or the like.

  Two annular convex portions are provided on the outer peripheral surface of the port cap 14, thereby forming a first step portion 17 a and a second step portion 17 b, respectively. A locking claw 7 formed on the locking piece 6a of the lock connector 10 can be engaged with the first and second stepped portions 17a and 17b. In a state where the locking claw 7 is engaged with the first stepped portion 17a, the lock connector 10 and the connection port 11 are shallowly coupled, and the state where the distal end portion 1b of the lock connector 10 does not penetrate the septum 13 of the connection port is maintained. Is done. In a state in which the locking claw 7 is engaged with the second stepped portion 17b, the lock connector 10 and the connection port 11 are deeply coupled, and the state where the distal end portion 1b of the lock connector 10 penetrates the septum 13 is maintained.

  The operation of the lock connector device configured as described above will be described. When connecting the lock connector 10 and the connection port 11, the port caps 14 of the connection port 11 are inserted into the hood 2 of the lock connector 10 with their tips opposed to each other. As a result, the distal end portion 1 b of the tube portion 1 of the lock connector 10 comes into contact with the septum 13 through the insertion hole 15 a of the connection port 11. Then, as shown in FIGS. 8A and 8B, the locking claw 7 of the lock connector 10 engages with the first step portion 17 a of the connection port 11. In the first connection state, the connection of the lock connector 10 to the connection port 11 is maintained in a state where the distal end portion 1b of the lock connector 10 does not penetrate the septum 13 of the connection port. Therefore, the flow path of the lock connector 10 and the flow path of the connection port 11 are not in communication.

  From this state, as shown in FIGS. 9A and 9B, the lock connector 10 and the connection port 11 can be deeply coupled to engage the locking claw 7 of the lock lever 10 with the second stepped portion 17b. In the second connection state, the connection of the lock connector 10 to the connection port 11 is maintained with the distal end portion 1b of the lock connector 10 penetrating the septum 13. Therefore, a state in which the flow path of the lock connector 10 and the flow path of the connection port 11 communicate with each other is obtained.

  In order to release the connection of the lock connector 10 to the connection port 11, as shown in FIGS. 10A and 10B, a pressing force in a direction approaching the tube portion 1 is applied to the operation piece 6 b of the lock connector 10. Thereby, the support pieces 4a, 4b, 5a and 5b are elastically deformed, and the mutual gap between the pair of locking claws 7 is widened. As a result, the engagement of the locking claw 7 with respect to the first step portion 17a or the second step portion 17b is released.

  According to the above configuration and operation, in the first connection state shown in FIGS. 8A and 8B, the connection of the lock connector 10 to the connection port 11 is maintained, but the distal end portion 1b of the lock connector 10 is the septum of the connection port. Since it is in the state which has not penetrated 13, it is avoided that a permanent deformation of a septum occurs even if it is stored for a long time.

  In the first connection state, the distal end portion of the tube portion 1 of the lock connector 10 may be in contact with the septum 13 of the connection port 11, and the slit 13a may be partially opened by the pressing force. Thereby, the sterilization gas can be circulated in the first connection state.

  8A and 8B, the engagement is deeper from the state in which the locking claw 7 of the lock connector 10 is engaged with the first step 17a of the connection port 11 so that the first connection state shown in FIGS. FIGS. 11A and 11B show a configuration for restricting the position so as not to occur. That is, the connection port 11 has a flange 16 on the proximal end side with respect to the second stepped portion 17b, and a position regulating step facing the distal end of the outer edge of the lock connector 10, or the distal end of the hood 2 in the structure shown in the figure. It functions as a part. A ring-shaped stopper 18 is mounted as a position restricting piece between the tip of the hood 2 and the flange 16 in a state where the locking claw 7 is engaged with the first stepped portion 17a. The ring-shaped stopper 18 has a shape shown in FIG. 12, for example. The ring-shaped stopper 18 has a notch 18a in a part of the ring shape, and is attached to the connection port 11 through the notch 18a. A knob ring 19 is attached to the ring-shaped stopper 18 for convenience of operation. By restricting the position by the ring-shaped stopper 18, the state where the connection port 11 and the lock connector 10 are coupled is maintained in a state where the distal end portion 1 b of the lock connector 10 does not penetrate the septum 13 of the connection port. In addition, in this state, as shown in FIGS. 9A and 9B, since the mutual positioning for communicating the flow path of the lock connector 10 and the flow path of the connection port 11 is performed, an operation for communicating the flow path is performed. Is extremely easy.

  According to the configuration and operation of the present embodiment, it is possible to provide the lock connector 10 and the connection port 11 in a state of being connected in the first connection state, and the operation of connecting the two in use can be omitted. At the same time, it is possible to prevent contamination of the connector lumen due to contact between both connecting portions. Furthermore, when connecting, it is only necessary to press the lock connector 10 against the connection port 11, and the operation is extremely simple. When releasing the connection, it is only necessary to pinch the operation piece 6b with a finger. The lock lever 6 is independent of the hood 2 and is supported only by the support pieces 4a, 4b, 5a, and 5b. Therefore, it is easy to increase the amount of flexible deformation for displacing the locking claw 7 at the tip of the locking piece 6a. As a result, it is possible to secure a sufficient amount of deformation for engaging with the first and second stepped portions 17a and 17b and to obtain reliable engagement.

  Moreover, since the locking piece 6a is completely surrounded by the hood 2 and the outer surface is substantially flush with the outer surface of the hood 2, there is a possibility that the tip of the locking piece 6a may be deformed by accidental contact. Lower. Therefore, the occurrence of accidents that disengage is reduced. Further, since the distal end portion 1b of the tubular body portion 1 is housed in the hood 2, the distal end portion 1b can be protected from contamination due to contact, and the contact portion with the infusion solution can be kept clean.

  The flow path communicating lock connector device of the present invention can be applied not only to connection with a connection port of a medical container, but also to connection with a mixed injection port having a septum with a slit.

  In the above-described embodiment, the flow channel communication lock connector on the premise of connection with a connection port having a partition wall with slits is shown. This structure is particularly advantageous in improving the operability during puncturing when an insertion end structure that does not have a sharp tip is used to prevent erroneous puncturing. On the other hand, the structure of the lock connector device for channel communication according to the present invention is also applicable when a structure in which no slit is provided in the partition wall is employed. In that case, the partition wall may be made thin and easy to break, or the tip 1b of the tube 1 may be sharpened.

  According to the channel connector lock connector device of the present invention, the connector device can be easily attached and detached by employing a connection port with a septum, and the septum is permanently deformed during storage in the connected state. By avoiding this, the septum can be kept airtight, which is useful as a connector for connection to a medical container.

The side view which shows the lock connector which comprises the lock connector apparatus for flow-path communication in embodiment of this invention Cross section of the lock connector Top view of the lock connector Front view of the lock connector The side view of the connection port which comprises the lock connector apparatus for flow-path communication in embodiment of this invention Cross section of the connection port Front view of the connection port The side view which shows operation | movement of the lock connector apparatus for flow-path communication in embodiment of this invention Cross section Side view showing another operation of the lock connector device for communicating with the channel Cross section Side view showing the operation for releasing the connection of the lock connector device for communicating with the same channel Cross section Side view showing another usage pattern of the lock connector device for communicating with the same channel Cross section The perspective view which shows the ring-shaped stopper used for the same other usage form

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tube part 1a Base end part 1b Tip part 2 Hood 2a Notch part 3 Coupling part 4a, 4b, 5a, 5b Support piece 6 Lock lever 6a Locking piece 6b Operation piece 7 Locking claw 8 Positioning part 9 Stopper part 10 Lock connector 11 Connection port 12 Port body 12a Protrusion 12b Locking projection 13 Septum (partition wall member)
13a Slit 14 Port Cap 14a Locking Recess 15 End Edge Protrusion 15a Projection 15b Insertion Hole 16 Gutter 17a First Step 17b Second Step 18 Notch 19 Knob Ring

Claims (9)

A tube portion having a tubular tip portion and a proximal end portion connectable to an infusion tube, and coupled to both side portions of the tube portion and extending along the axial direction of the tube portion and inwardly extending to the tip thereof A lock connector having a pair of lock levers formed with protruding locking claws;
A tubular port body into which a distal end portion of the lock connector can be inserted; and a step portion provided on a peripheral surface of the port body and engageable with a locking claw of the lock lever. It has a connection port that can be connected to the communication target,
By inserting the distal end portion of the lock connector into the lumen of the port body of the connection port and engaging the locking claw and the stepped portion, the connection port and the lock connector communicate the liquid flow path. In the connected flow connector lock connector device,
The connection port has a flexible partition member provided at a distal end portion of the port main body and sealing a lumen of the port main body, and the stepped portion is a first step located on the distal end side of the port main body. And a second step portion located on the base end side,
A first connection state in which the distal end of the tube portion of the lock connector is opposed to the distal end of the port body, and the locking claw of the lock lever is engaged with the first stepped portion; It is possible to take the second connection state in which the pawl is engaged with the second stepped portion,
In the second connection state, the lock connector is connected to the connection port at a position where the distal end portion of the tube portion of the lock connector enters the partition member to form an opening having a sufficient size as an infusion channel. Is retained,
In the first connection state, the distal end portion of the tube portion of the lock connector does not enter the partition member, or the position of the lock connector with respect to the connection port at a position where the distal end portion has entered shallower than in the second connection state. Concatenation is maintained ,
The connection port has a position restricting stepped portion on a proximal end side with respect to the second stepped portion, and an outer edge of the lock connector in a state where a locking claw of the lock lever is engaged with the first stepped portion. by part tip and an intervening position regulating piece between the position restricting stepped portion, the flow path communicating Spoken lock connector device according to claim Rukoto blocked it may become the second connection state.   The flow path communication lock connector device according to claim 1, wherein a distal end portion of a tube portion of the lock connector is in contact with the partition member in the first connection state. The lock connector includes a pair of support pieces coupled to side portions of the tube body portion, and the lock lever is supported by the support pieces at a center portion and extends along the axial direction of the tube body portion. The front end side of the support part forms a locking piece having the locking claw, the rear end side of the support part forms an operation piece,
By applying a pressing force in a direction approaching the tube body portion to the operation piece and elastically deforming the support piece, the engagement claw of the pair of lock levers increases the mutual interval, The flow path communicating lock connector device according to claim 1, wherein the engagement of the locking claw with respect to the first stepped portion or the second stepped portion is released. The channel connector lock connector device according to claim 1 , wherein the position regulating piece is configured by a ring-shaped stopper in which a part of the ring is cut out. The lock connector further includes a hood that is held on a side portion of the tubular body portion and surrounds a distal end portion of the tubular body portion and has a pair of cutout portions formed on a side wall thereof. The vicinity of the locking claw is disposed in the notch of the hood,
When inserting the distal end portion of the lock connector into the lumen of the port body of the connection ports, according to the distal end portion of the port body in any one of the claims can be accommodated in the hood 1-4 Lock connector device for channel communication. 6. The flow path communication according to claim 5 , wherein a notch portion formed on a side wall of the hood is closed at a front end side, and a front end of the locking piece of the lock lever is surrounded by a front end portion of the hood. Lock connector device. Outer tip of the locking connector, the is formed by the tip portion of the hood, in a state where the engagement pawl is engaged with the first stepped portion of the front Symbol lock lever, the distal end of the hood of the lock connector and wherein by interposing the position regulating piece between the position restricting stepped portion, the flow path communicating Spoken lock connector apparatus according to claim 6, to become the second connection state is prevented. The partition member has a slit, when the second connection state, the tip end portion of the tube body portion of the lock connector is any claim 1-7 which enters the partition member through the slit 2. A lock connector device for channel communication according to claim 1. 9. The flow path communication lock connector according to claim 8 , wherein in the first connection state, a distal end portion of a tube portion of the lock connector abuts on the partition member, and at least a part of the slit is opened by the pressing force. apparatus.

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