JP2012024565A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector by which liquid flowing in from two flow-in parts can be simultaneously supplied to one flow-out part or liquid flowing in from one flow-in part can be supplied to one flow-out part.SOLUTION: A groove 52 communicating a transfusion implement 51 with a communication part 45 is formed on a head part 41. The groove 52 is formed such that it is closed in a state that the head part 41 is inserted into the opening part 31 of a body 4, and is opened by elasticity of the head part 41 in a state that the head part 41 is pressed by the transfusion implement 51 to be moved from the opening part 31 of the body 4 to a large diameter part 32.

Description

  The present invention relates to a connector including two inflow portions into which liquid flows in, one outflow portion through which liquid flows out, and a valve body that selectively closes one inflow portion to prevent inflow of liquid.

  2. Description of the Related Art Conventionally, connectors that allow liquid to flow in from two inflow parts and flow in liquid from one outflow part have been used in the medical field. This connector is formed so that liquid flowing in from two inflow portions can be supplied to one outflow portion alternately or simultaneously.

  In this type of connector, there is known a connector including two inflow portions and one outflow portion through which a liquid is circulated, and a liquid circulation space communicating with the two inflow portions and the outflow portion (for example, Patent Documents). 1). The connector described in Patent Document 1 prevents liquid flowing into the liquid circulation space from one inflow part by contacting one inflow part, but prevents the liquid from flowing out from the other inflow part to the outflow part. It has a valve body that enables it.

  The valve body includes a head formed in a cylindrical shape and elastically deformed, and a deformed portion formed integrally with the head and elastically deformed in the axial direction of the head. A communication opening is provided at the top of the head, and a slit that can be opened and closed is formed on the cylindrical peripheral wall of the head. When this slit is opened, the inside of the head communicates with the liquid circulation space, and when this slit is closed, the head is opened. Communication between the inside of the unit and the liquid circulation space is prevented.

  The slit is closed when no external force is applied to the head, but is configured to open when the external force is applied and the head is deformed. Therefore, when the male luer connector is inserted into one inflow portion, it is pressed and the head is deformed to open the slit, so that the liquid flowing in from the male luer connector flows out from the inside of the valve body to the outflow portion through the liquid circulation space. To do. Therefore, when the male luer connector is inserted into one inflow portion, the liquid flowing in from one inflow portion and the other inflow portion flows out from the outflow portion through the liquid circulation space.

  On the other hand, when the male luer connector is removed from one inflow portion, the deformed head becomes the original shape by the restoring force of the elastic material, and the slit is closed. At this time, the head pressed by the male luer connector is released, and the deformed portion extends and restores in the axial direction of the head, so that the position of the head is before inserting the male luer connector toward the valve body. Return to position. When the male luer connector is removed from one inflow portion, the liquid flowing in from the other inflow portion flows out from the outflow portion through the liquid circulation space.

  From the above, when the male luer connector is removed from one inflow portion, the liquid flows in from the other inflow portion and flows out to the outflow portion, and when the male luer connector is inserted into one inflow portion, the one inflow portion and Liquid flows in from the other inflow part and flows out to the outflow part.

Japanese Patent No. 4378187

  However, the connector described in Patent Document 1 has a complicated device configuration because it has a communication port at the top of the head and a slit that can be opened and closed on the cylindrical peripheral wall of the head.

  Moreover, in the connector of patent document 1, when a male luer connector is removed from one inflow part, since the slit of a head closes, there exists a problem that a liquid retains in the internal cavity part of a head.

  In order to solve the above-described disadvantages, the present invention simultaneously supplies liquid flowing in from two inflow portions to one outflow portion with a simple configuration, or supplies liquid flowing in from one inflow portion to one outflow portion. It aims at providing the connector which can be supplied to.

  The present invention is a connector that is connected to an infusion line and can be laterally injected from the other infusion device to the infusion line, wherein an opening is formed on the top surface to which the other infusion device can be connected, and the bottom surface is closed. A cylindrical main body, a first connection pipe and a second connection pipe that communicate with the inside of the main body and are connected to the infusion line, and a valve that is housed in the main body and closes the opening so as to be freely opened and closed. The main body is formed with a large-diameter portion larger in diameter than the opening on the bottom side of the opening, and the valve body is inserted into the opening of the main body, A communicating portion that is disposed on the bottom side of the main body relative to the head and communicates the first connecting pipe and the second connecting pipe within the main body; and an elastic portion that biases the head toward the opening of the main body. And a groove is formed in the head to communicate the top surface and the outer surface of the head. The part is closed in a state where it is inserted into the opening of the main body, and the head is pressed by the other infusion device and moved from the opening of the main body to the large diameter part due to the elasticity of the head. It is formed to be opened.

  In the connector of the present invention, the head of the valve element inserted into the opening of the main body is pressed by another infusion device, so the head moves from the opening of the main body to the large diameter portion. Since the groove of the head that has moved to the large diameter part is opened by the elasticity of the head itself, the infusion fluid that flows in from other infusion devices flows into the infusion line via the groove.

  On the other hand, since the first connecting pipe and the second connecting pipe connected to the infusion line are communicated with each other by a communication portion disposed on the bottom surface side of the main body, the infusion in the infusion line is connected to the first connecting pipe and the main body. And the second connection pipe.

  As described above, in the connector of the present invention, when another infusion device is inserted into the opening of the main body, the infusion fluid flowing in from the two inflow portions (first connection pipe, other infusion device) is one outflow portion (first 2 connecting pipes). In addition, when no other infusion device is inserted into the opening of the main body, the infusion fluid that flows in from one inflow portion (first connection tube) is supplied to one outflow portion (second connection tube).

  Therefore, according to the connector of the present invention, the liquid flowing in from the two inflow portions can be simultaneously supplied to one outflow portion with a simple configuration, or the liquid flowing in from the one inflow portion can be supplied to one outflow portion. It becomes possible to do.

  Moreover, according to the connector of this invention, a valve body receives the urging | biasing force of an elastic part, and moves to a top | upper surface side by removing the other infusion device connected to the opening part. Since the groove communicates the top surface and the outer surface of the head and does not communicate with the inside of the valve body, the infusion solution does not stay in the valve body when other infusion devices are removed. Therefore, the liquid between the main body and the communication portion flows out to one of the connection pipes by the flow between the first connection pipe and the second connection pipe.

  Further, the opening of the main body has a main body taper portion whose inner peripheral surface is reduced in diameter from the bottom surface toward the top surface, and the outer surface of the head of the valve body faces the taper portion. It is preferable to have a head taper part which reduces in diameter toward the top surface.

  According to this, by removing the other infusion device connected to the opening, the head of the valve body moves from the large diameter portion to the opening, and the head of the valve body is inserted into the opening. At this time, since the head of the valve body and the opening of the main body are formed in a tapered shape that decreases toward the top surface, the frictional resistance during insertion can be reduced.

  Furthermore, it is preferable that a convex portion that presses the groove in a closing direction when the head tapered portion is pressed by the main body tapered portion is formed on the head tapered portion of the valve body. According to this, when the head of the valve body is inserted into the opening, the groove is pressed in the closing direction by the convex portion, so that the groove can be easily closed. Therefore, it is possible to prevent liquid leakage from the opening when removing another infusion device connected to the opening.

  In addition, the main body and the valve body have a positioning mechanism that prevents the valve body from rotating relative to the main body, and an outer surface of the valve body at which the groove opens is the first body. It is preferable that the first connecting pipe or the second connecting pipe is arranged in the axial direction of the connecting pipe on the downstream side. According to this, since the relative rotation of the valve body is prevented by the positioning mechanism, the outer surface on which the groove opens is always the downstream side of the first connection pipe or the second connection pipe. Arranged in the axial direction. Therefore, the infusion fluid that flows in from another infusion device efficiently flows into the infusion line via the first connection pipe or the second connection pipe.

  Furthermore, the said communication part may be formed so that the outer periphery of the trunk | drum of the said valve body is smaller diameter than the inner periphery of the said main body. According to this, it becomes possible to infuse the infusion flowing between the first connecting pipe and the second connecting pipe through the outer peripheral surface of the body of the valve body, and infuse the infusion of the infusion line with a simple configuration. A communication part can be constituted.

  Moreover, the said communication part may be formed of the through-hole which penetrates the said valve body. According to this, it becomes possible to allow the infusion flowing between the first connecting pipe and the second connecting pipe to flow in through the through hole, and the communication portion can be easily configured.

  Moreover, it is preferable that the elastic part of the said valve body has a seal part which the outer periphery of the boundary part with the said communication part contacts liquid-tightly with the internal peripheral surface of the said main body. According to this, when the head part of the valve body moves from the large diameter part to the opening part due to the elasticity of the elastic part, the seal part pushes up the infusion flowing into the main body, so that the infusion inside the main body is negative pressure. Can be prevented. Therefore, when removing another infusion device from the opening, backflow from the infusion line can be prevented.

  Further, the elastic part may have a hollow part formed in a hollow inside, and the elastic part may be formed in a bellows shape. According to this, the elastic part which expands and contracts easily with a simple configuration can be formed.

The top view which shows the connector of 1st Embodiment. The perspective view which shows the valve body of 1st Embodiment. Sectional drawing of the connector shown in FIG. Sectional drawing of the connector which inserted the insertion pipe of 1st Embodiment. Sectional drawing of the connector of 2nd Embodiment. Sectional drawing of the connector which inserted the insertion pipe of 2nd Embodiment. Explanatory sectional drawing of the connector of 3rd Embodiment. Explanatory sectional drawing of the connector which inserted the insertion tube of 3rd Embodiment. Sectional drawing of the connector of 4th Embodiment. Sectional drawing of the connector which inserted the insertion pipe of 4th Embodiment. The perspective view which shows the valve body of 5th Embodiment. Sectional drawing of the main body and 1st, 2nd connecting pipe of 5th Embodiment. Sectional drawing of the connector of 5th Embodiment. Sectional drawing of the connector which inserted the insertion pipe of 5th Embodiment.

“First Embodiment”
A first embodiment of the present invention will be described with reference to the drawings. First, the configuration of the present embodiment will be described with reference to FIGS.

  The connector 1 of this embodiment is housed in the main body 4, a cylindrical main body 4 with the top surface 2 opened and the bottom surface 3 closed, a first connection pipe 5 and a second connection pipe 6 extending from the main body 4. The columnar valve body 7 is provided. The first connecting pipe 5 and the second connecting pipe 6 extend in a straight line in a direction perpendicular to the axis 8 of the main body 4 and spaced apart from each other by 180 °.

  The main body 4 includes a cylindrical body 11 formed in a cylindrical shape and a lid portion 12 attached to the cylindrical body 11. A space surrounded by the cylindrical body 11 and the lid portion 12 is defined as a space portion 13. A step portion 15 is formed integrally with the tubular body 11 on the side wall 14 on the bottom surface 3 side of the tubular body 11.

  The lid portion 12 includes a lid portion bottom surface 21 formed on the bottom surface 3 of the main body 4, and a side wall 22 that is erected with respect to the periphery of the lid portion bottom surface 21 and is integrally formed. A convex portion 23 protruding toward the top surface 2 is formed integrally with the lid bottom surface 21 at the center of the lid bottom surface 21. Further, a claw portion 24 extending inward is integrally formed on the side wall 22. By engaging the claw portion 24 with the step portion 15, the lid portion 12 is attached to the cylindrical body 11, and the bottom surface of the cylindrical body 11 is closed by the lid portion 12.

  The space portion 13 is adjacent to the opening portion 31 that is a space provided on the top surface 2 side, the large-diameter portion 32 that is a space adjacent to the bottom surface 3 side of the opening portion 31, and the bottom surface 3 side of the large-diameter portion 32. It has a gap 33 that is a space. The opening 31 includes an opening cylindrical portion 31a provided on the bottom surface 3 side and formed in a cylindrical shape, and an opening tapered portion 31b provided on the top surface 2 side and formed in a taper shape. The opening taper portion 31b is formed in a taper shape whose diameter is reduced on the bottom surface 3 side.

  The large diameter portion 32 is formed to have a larger diameter than the open cylindrical portion 31a. The opening 31 side of the large-diameter portion 32 is formed in a tapered shape that is reduced in diameter on the top surface 2 side, and the bottom surface 3 side of the large-diameter portion 32 is formed in a cylindrical shape.

  The valve body 7 is extendable in a direction along the axis 8 of the main body 4 and a substantially cylindrical head portion 41 inserted into the opening 31, a substantially cylindrical body portion 42 having a larger diameter than the head portion 41. And an elastic portion 43. The head portion 41, the body portion 42, and the elastic portion 43 are integrally formed by an elastic member such as silicone rubber.

  The top surface 41a of the head 41 is formed in a hemispherical shape. A V-shaped groove 52 is formed on the top surface 41 a of the head 41. The groove | channel 52 is formed in the radial direction of the head 41 currently formed in the substantially column shape. An outer surface 41b is provided on the bottom surface 3 side of the head 41, and the groove 52 is formed so as to communicate the top surface 2 and the outer surface 41b. Although the groove 52 is normally open, the groove 52 can be forcibly closed by applying an external force to the head 41, which is an elastic member, to cause deformation.

  The body portion 42 is formed in a cylindrical shape having a smaller diameter than the gap portion 33. The elastic portion 43 has a flange portion 44 at the boundary portion with the body portion 42. The flange portion 44 is formed in an annular shape, and the side wall of the flange portion 44 is in close contact with the sidewall 14 of the cylindrical body 11. Therefore, the collar part 44 has a function of sealing liquid-tightly so that the infusion fluid flowing into the gap part 33 does not flow to the bottom surface side.

  In addition, since the body portion 42 is formed in a cylindrical shape having a smaller diameter than the gap portion 33 and the flange portion 44 has a sealing function, the first connection is made to the body portion outer peripheral portion 45 which is the outer peripheral side of the body portion 42. A space for communicating the pipe 5 and the second connecting pipe 6 is formed. The flange portion 44 corresponds to a seal portion of the present invention, and the body outer peripheral portion 45 corresponds to a communication portion of the present invention. Further, a hollow portion 46 formed of a hollow is formed inside the body portion 42.

  The elastic part 43 is formed in a hollow bellows shape. The convex portion 43 a of the elastic portion 43 formed in a bellows shape is in contact with the side wall 14 of the cylindrical body 11. A hollow portion 48 made of a hollow is formed inside the elastic portion 43, and a valve body opening 47 communicating with the hollow portion 48 is formed on the bottom surface 3 side thereof.

  The valve body opening 47 is formed so as to be fitted to the convex portion 23, and the valve body 7 is supported by the lid portion 12 by fitting the convex portion 23 to the valve body opening 47. Has been. Further, the hollow portion 46 of the trunk portion 42 and the hollow portion 48 of the elastic portion 43 communicate with each other.

  Next, operation | movement of the connector 1 of this embodiment is demonstrated using FIG. 3, FIG. FIG. 3 shows the connector 1 in a state where no other infusion device such as the insertion tube 51 is connected to the opening 31. When the insertion tube 51 is not connected to the opening 31, since the head 41 is in close contact with the opening 31, the opening 31 is blocked by the head 41. The groove 52 of the head 41 is closed by pressing from the opening 31. At this time, the first connecting pipe 5 and the second connecting pipe 6 communicate with each other via the body outer peripheral portion 45.

  Therefore, the downstream end of the upstream infusion line (not shown) is connected to the first connection pipe 5, the upstream end of the downstream infusion line (not shown) is connected to the second connection pipe 6, and the infusion is supplied to the first connection pipe 5. When the liquid flows into the infusion, the infusion flows out to the downstream side of the infusion line through the body outer peripheral portion 45 and the second connection pipe 6.

  Next, as shown in FIG. 4, when the insertion tube 51 is connected to the opening 31, the insertion tube 51 comes into contact with the head 41 of the valve body 7 and presses the head 41. Therefore, the elastic part 43 contracts greatly against the urging force of the elastic part 43, the head part 41 comes off from the opening part 31, and the head part 41 and the trunk part 42 of the valve body 7 move to the bottom surface 3 side. Further, the head 41 is released from the opening 31 and passes through the large-diameter portion 32 and moves to the gap 33, so that the groove 52 of the head 41 is opened.

  When the groove 52 is opened, the insertion tube 51 and the gap portion 33 communicate with each other, so that the infusion fluid flowing from the insertion tube 51 flows out to the second connection tube 6 through the groove 52 and the gap portion 33. Further, since the first connection pipe 5 communicates with the second connection pipe 6 via the trunk outer peripheral part 45, the infusion fluid flowing from the first connection pipe 5 is second via the trunk outer peripheral part 45. It flows out to the connecting pipe 6.

  Accordingly, when the upstream side of the infusion line (not shown) is attached to the first connection pipe 5, the downstream side of the infusion tube (not shown) is attached to the second connection pipe 6, and the infusion is introduced from the upstream side of the infusion line, the first The liquid flowing in from the connection pipe 5 and the insertion pipe 51 is mixed in the gap portion 33 and flows out to the downstream side of the infusion line through the second connection pipe 6.

  When the insertion tube 51 is removed from the opening 31, the elastic portion 43 is expanded and restored by the urging force as shown in FIG. 3, and the head 41 is inserted into the opening 31 to close the opening 31. At this time, since the first connecting pipe 5 communicates with the second connecting pipe 6 via the trunk outer peripheral part 45, the infusion fluid flowing from the first connecting pipe 5 passes through the trunk outer peripheral part 45. 2 is discharged to the connecting pipe 6. Moreover, since the collar part 44 is closely_contact | adhered with the side wall 14, the infusion inflow into the trunk | drum outer peripheral part 45 is pushed up to the opening part 31 side.

  As described above, according to the connector 1 of the present embodiment, when the insertion tube 51 is connected to the opening 31, the groove 52 is opened so that the insertion tube 51 passes through the outer surface 41 b and the body outer peripheral portion 45. When the insertion pipe 51 is removed from the opening 31 in communication with the second connection pipe 6, the groove 52 is closed and the communication between the top surface 2 and the outer surface 41 b is blocked.

  Therefore, only by the operation of whether or not the insertion tube 51 is connected, the infusion fluid flowing in from the two inflow portions is simultaneously supplied to one outflow portion, or the infusion fluid flowing in from the one inflow portion is supplied to the one outflow portion. It is possible to provide a connector that can be supplied to the connector.

  Further, by removing the insertion tube 51 connected to the opening 31, the head 41 and the trunk 42 receive the urging force of the elastic portion 43 and move to the top surface 2 side. Therefore, when the insertion tube 51 is removed, the volume of the infusion portion in the main body 4 is reduced, and the infusion can be prevented from staying in the main body 4.

  Moreover, since the groove | channel 52 is closed by inserting the head part 41 of the valve body 7 in the opening part 31, and the top surface of the head part 41 becomes a hemispherical surface, the head 41 of the valve body 7 is made of sake cotton or the like. Can be easily disinfected.

  Further, when the head 41 is inserted into the opening 31, the head 41 comes into close contact with the opening cylindrical portion 31 a constituting the opening 31, and therefore flows into the insertion tube 51 when the insertion tube 51 is removed from the opening 31. It is possible to prevent the infused liquid remaining in the opening 31.

  When the insertion tube 51 is removed from the opening 31, the collar portion 44 moves to the top surface 2 side by the urging force of the elastic portion 43. At that time, since the collar portion 44 is in close contact with the side wall 14 of the cylindrical body 11, the infusion fluid flowing into the body outer peripheral portion 45 is pushed up. Therefore, the infusion of the main body 4 can be prevented from becoming negative pressure, and when the insertion tube 51 is removed from the opening 31, backflow from the infusion line can be prevented.

  Moreover, since the inside of the elastic part 43 is formed in a cavity and is formed in a bellows shape, the elastic part 43 easily expands and contracts. Therefore, the elastic part 43 which expands / contracts easily with a simple configuration can be formed.

  Further, the main body 4 includes a cylindrical body 11 that is formed in a cylindrical shape and forms a space portion 13 and a lid portion 12, and an elastic portion 43 is supported by the lid portion 12. Therefore, the valve body 7 can be mounted by inserting the valve body 7 into the main body 4 and closing it with the lid 12, and the connector 1 can be easily assembled.

“Second Embodiment”
Next, a second embodiment will be described with reference to FIGS. This embodiment is different from the first embodiment only in the configuration of a part of the body portion 42. For this reason, in the description of the present embodiment, the differences will be mainly described, and the description of the same matters as in the first embodiment will be omitted.

  In the present embodiment, a through hole 61 that communicates the first connecting pipe 5 and the second connecting pipe 6 is provided in the body portion 42 of the valve body 7. The through hole 61 corresponds to a communication part. Moreover, the large diameter part 32 is formed in the taper shape diameter-reduced by the opening part 31 side. Further, the cavity 46 is not formed in the body 42.

  The body portion 42 is formed in a cylindrical shape having the same diameter as the gap portion 33, and the body portion 42 is in close contact with the side wall 14 of the tubular body 11. Therefore, a space for communicating the first connecting pipe 5 and the second connecting pipe 6 is not formed on the outer peripheral portion of the trunk portion 42. Further, the flange portion 44 is not provided at the end portion of the body portion 42 on the elastic portion 43 side.

  In this embodiment, since it has the above configuration, the infusion fluid that flows in from the first connection pipe 5 flows out to the downstream side of the infusion line through the through hole 61 and the second connection pipe 6. . Further, when the insertion tube 51 is removed from the opening 31, the elastic part 43 is extended and restored, and the body part 42 moves toward the opening 31, thereby flowing into the through hole 61, the large diameter part 32, and the gap part 33. The infusion solution being pushed is pushed up to the opening 31 side.

  Although the first embodiment and the present embodiment differ in the above points, the other points have the same configuration as the first embodiment and perform the same operation. Therefore, also in this embodiment, the same effect as that of the first embodiment can be obtained. Moreover, in this embodiment, the communication part which connects the 1st connection pipe 5 and the 2nd connection pipe 6 is comprised by providing the through-hole 61 in the trunk | drum 42, and it can comprise a communication part easily. it can.

“Third Embodiment”
Next, a third embodiment will be described with reference to FIGS. This embodiment is different from the second embodiment only in the configuration of a part of the body portion 42. For this reason, in the description of the present embodiment, the differences will be mainly described, and description of the same matters as those of the second embodiment will be omitted.

  In the present embodiment, an outer peripheral groove 63 is formed on the outer peripheral surface 62 of the body portion 42. The first connecting pipe 5 and the second connecting pipe 6 are communicated with each other via the outer circumferential groove 63, and the outer circumferential groove 63 corresponds to a communicating portion. In the present embodiment, the infusion fluid that flows in from the first connection pipe 5 flows out to the downstream side of the infusion line through the outer peripheral groove 63 and the second connection pipe 6.

  Although the second embodiment and this embodiment differ in the above points, the other points have the same configuration as the second embodiment and perform the same operation. Therefore, the present embodiment can provide the same effects as those of the second embodiment. Moreover, in this embodiment, the communication part which connects the 1st connecting pipe 5 and the 2nd connecting pipe 6 is comprised by providing the outer periphery groove | channel 63 in the trunk | drum 42, The infusion of an infusion line is comprised by simple structure. A communication part to be introduced can be configured.

“Fourth Embodiment”
Next, a fourth embodiment will be described with reference to FIGS. This embodiment is different from the first embodiment only in the configuration of a part of the body portion 42 and the elastic portion 43. For this reason, in the description of the present embodiment, the differences will be mainly described, and the description of the same matters as in the first embodiment will be omitted.

  In the present embodiment, the body portion 42 is included in the elastic portion 43, and a small-diameter portion 71 through which the infusion can flow is formed in the vicinity of the valley fold portion of the bellows-like elastic portion 43, and the first connecting pipe 5 The second connection pipe 6 communicates with the small diameter part 71. In the present embodiment, the small diameter portion 71 corresponds to the communication portion. Moreover, the large diameter part 32 is formed in the taper shape diameter-reduced by the top | upper surface 2 side.

  In addition, since the body portion 42 is formed in a cylindrical shape having the same diameter as the gap portion 33 and the body portion 42 is in close contact with the side wall 14, the first connection pipe 5 and the second connection portion are formed on the outer periphery of the body portion 42. A space communicating with the connecting pipe 6 is not formed. Further, the flange portion 44 is not provided at the end portion of the trunk portion 42 on the bottom surface 3 side.

  Therefore, in the present embodiment, the infusion fluid that flows in from the first connection pipe 5 flows out to the downstream side of the infusion line through the small diameter portion 71 and the second connection pipe 6. Further, when the insertion tube 51 is removed from the opening 31, the elastic part 43 is extended and restored, and the body part 42 moves toward the opening 31, thereby flowing into the large diameter part 32, the gap part 33 and the small diameter part 71. The infusion solution being pushed is pushed up to the opening 31 side.

  Although the first embodiment and the present embodiment differ in the above points, the other points have the same configuration as the first embodiment and perform the same operation. Therefore, also in this embodiment, the same effect as that of the first embodiment can be obtained. Moreover, in this embodiment, since the 1st connecting pipe 5 and the 2nd connecting pipe 6 can be connected via the small diameter part 71 of the elastic part 43 formed in the bellows shape, the 1st connecting pipe 5 and the 2nd It is not necessary to process the valve body 7 for communicating the connecting pipe 6, and the first connecting pipe 5 and the second connecting pipe 6 can be easily communicated.

“Fifth Embodiment”
Next, a fifth embodiment will be described with reference to FIGS. This embodiment is different from the first embodiment in the configuration of the head 41, the body 42, and a part of the main body 4. For this reason, in the description of the present embodiment, the differences will be mainly described, and the description of the same matters as in the first embodiment will be omitted.

  In the present embodiment, the opening 81 includes an opening cylindrical portion 81a provided on the top surface 2 side and formed in a cylindrical shape, and a main body taper portion 81b provided on the bottom surface 3 side and formed in a tapered shape. The large-diameter portion 82 is formed in a tapered shape that decreases in diameter on the opening 81 side. Therefore, the inner wall 83 of the main body 4 forming the large diameter portion 82 is formed in a tapered shape that is reduced in diameter on the opening 31 side. Further, an inner wall flat surface 84 obtained by flattening a part of the inner wall 83 of the main body 4 is formed along the axial direction of the first connecting pipe 5 and the second connecting pipe 6.

  The head portion 41 is formed with a tapered head taper portion 91 that is reduced in diameter on the top surface 2 side, and has a top surface 91a that is formed flat on the tip side. A groove 52 is cut into a part of the outer side surface 91b of the head taper portion 91, and a convex portion 92 is formed on the outer side surface 91b adjacent to the cut.

  The head taper portion 91 and the convex portion 92 are in close contact with the main body taper portion 81b in a state where the insertion tube 51 is not inserted. At this time, the top surface 41 a of the head 41 is formed flush with the top surface 81 c of the opening 81. The head taper portion 91 is pressed by the main body taper portion 81 b, and the convex portion 92 is pressed in the direction to close the groove 52. The trunk portion 42 has a larger diameter on the head 41 side, is formed in a substantially cylindrical shape having a smaller diameter than the gap portion 33, and is formed with a flat trunk portion flat surface 94 parallel to the groove 52. .

  The valve body 7 is supported by the lid portion 12 so that the body flat surface 94 faces the inner wall flat surface 84 in a state where the head taper portion 91 and the main body taper portion 81b are in close contact with each other. Since this trunk | drum flat surface 94 and the inner-wall flat surface 84 are contact | abutting, rotation of the valve body 7 is blocked | prevented. The trunk flat surface 94 and the inner wall flat surface 84 correspond to the positioning mechanism of the present invention.

  When the insertion tube 51 is not connected to the opening 31, the head taper portion 91 and the main body taper portion 93 are in close contact with each other, and the opening 81 is plugged. From this state, the downstream end of the upstream infusion line (not shown) is connected to the first connection pipe 5, the upstream end of the downstream infusion line (not shown) is connected to the second connection pipe 6, and the infusion is first connected. When flowing into the tube 5, the infusion solution flows out to the downstream side of the infusion line via the body outer peripheral portion 45 and the second connection tube 6.

  Next, when the insertion tube 51 is connected to the opening 31, the head 41 and the body 42 move to the bottom surface 3 side, and the head 41 is released from the opening 81 and moves to the large diameter portion 82. 52 opens. At this time, since the valve body 7 is supported by the lid portion 12 so that the other end 52b of the groove 52 faces the second connection pipe 6 side, the infusion fluid flowing in from the insertion pipe 51 passes through the groove 52. It flows into the second connection pipe 6. Therefore, the infusion fluid flowing from the insertion tube 51 efficiently flows into the infusion line (not shown) via the second connection tube 6.

  In addition, although the elastic part 43 is formed in a bellows shape and the cavity part 48 which consists of a cavity is formed in the inside, you may use a coil spring instead. In this case, one end of the coil spring is attached to the trunk portion 42, and the other end of the coil spring is attached to the lid bottom surface 21.

  As described above, as described in the first to fifth embodiments, according to the connector 1 according to the present invention, the valve body 7 including the elastic portion 43 is accommodated in the main body 4, and the surface of the head 41. The valve body 7 having the groove 52 provided in the first and second openings can be inserted into the openings 31 and 81 with a simple configuration so that the liquid flowing in from the first connecting pipe 5 and the inserting pipe 51 can be simultaneously supplied to the second connecting pipe 6. Alternatively, the liquid flowing in from the first connection pipe 5 can be supplied to the second connection pipe 6.

  DESCRIPTION OF SYMBOLS 1 ... Connector, 2 ... Top surface, 3 ... Bottom surface, 4 ... Main body, 5 ... 1st connection pipe, 6 ... 2nd connection pipe, 31 ... Opening part, 32 ... Large diameter part, 41 ... Head part, 43 ... Elasticity Part 45, communication part (body part outer peripheral part), 51 ... other infusion device (insertion pipe), 52 ... groove.

Claims (8)

A connector that is connected to an infusion line and can be laterally injected from another infusion device into the infusion line,
An opening to which the other infusion device can be connected to the top surface is formed, and a cylindrical main body whose bottom surface is closed;
A first connection pipe and a second connection pipe communicating with the inside of the main body and connected to the infusion line;
A valve body housed in the main body and closing the opening so as to be freely opened and closed,
The main body has a large-diameter portion larger in diameter than the opening on the bottom side of the opening.
The valve body includes a head inserted into the opening of the main body, and a communication portion that is disposed closer to the bottom surface of the main body than the head and communicates the first connection pipe and the second connection pipe within the main body. And an elastic part that urges the head toward the opening of the main body,
The head is formed with a groove communicating the top surface and the outer surface of the head,
The groove is closed in a state where the head is inserted into the opening of the main body, and the head is pressed by the other infusion device and moved from the opening of the main body to the large diameter portion. A connector formed to be opened by elasticity of the head. The connector according to claim 1,
The opening of the main body has a main body taper portion whose inner peripheral surface is reduced in diameter from the bottom surface toward the top surface,
The head of the valve body has a head taper portion whose outer surface faces the taper portion and has a diameter reduced toward the top surface. The connector according to claim 2,
The connector is characterized in that a convex portion is formed on the head taper portion of the valve body to press the groove taper in a closing direction when the head taper portion is pressed against the main body taper portion. The connector according to any one of claims 1 to 3,
The main body and the valve body have a positioning mechanism that prevents the valve body from rotating relative to the main body, and an outer surface of the valve body at which the groove opens is the first connection. A connector, characterized in that the connector is arranged in the axial direction of a connecting pipe on the downstream side of the pipe or the second connecting pipe. The connector according to any one of claims 1 to 4,
The connector is characterized in that the outer periphery of the body of the valve body is formed with a smaller diameter than the inner periphery of the main body. The connector according to any one of claims 1 to 5,
The connector is characterized in that the communication part is formed by a through-hole penetrating the valve body. The connector according to any one of claims 1 to 6,
The connector is characterized in that the elastic part of the valve body has a seal part in which the outer periphery of the boundary part with the communication part comes into liquid tight contact with the inner peripheral surface of the main body. The connector according to any one of claims 1 to 7,
The connector is characterized in that the elastic part has a hollow part formed in a hollow inside, and the elastic part is formed in a bellows shape.