JP2019042054A - Connector system - Google Patents

Abstract

To provide a connector system which can improve drug solution sealing performance even after a female connector is removed from a male connector.SOLUTION: A male connector 10 comprises: a cylindrical male side body part of which a top portion is closed by a lid part; a needle tube 3 provided at a center of the lid part and communicatable with a medical container via a through-hole in the lid part, the needle tube extending along an axis of a male side body part and being movable upward/downward along the axis; and a needle tube cylinder part 28 extending along the axis, the needle tube cylinder part, when the needle tube 3 is at an upward position, surrounding an outer periphery of the tip of the needle tube 3 with a distance therebetween and being movable upward/downward along the axis. A female connector 50 comprises: a cylindrical female side body part to which a medical container is attachable at a bottom portion thereof; a first valve part 56 provided at the top portion of the female side body part, the first valve part including a slit which is openable/closable when the needle tube cylinder part 28 is inserted into a surface crossing the axis at right angles; and a second valve part 58 provided inside the female side body part downwardly apart from the first valve 56, the second valve part being penetratable with the needle tube 3.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a connector system comprising a male connector and a female connector connected to the male connector.

  In recent years, anti-cancer drug treatment has been increasing along with the increase in the number of cancer patients, and exposure measures for anti-cancer drug are taken so that medical workers are not exposed unintentionally when handling this anti-cancer drug Is an issue.

  Such anti-cancer drug treatment requires a dispensing step of adding the anti-cancer drug to the infusion bag. For example, the solution in the syringe is injected into a vial and the anti-cancer drug in the bottle is Is dissolved, the solution is returned to the syringe, the vial and the infusion bag are exchanged from the syringe, and the solution is transferred to the infusion bag.

  Conventionally, a connector system is known in which a male connector is connected to a syringe and a female connector is connected to a vial and an infusion bag, respectively, in order to prevent the anticancer drug (drug) from being exposed in the above dispensing process. (See, for example, Patent Document 1).

Japanese Patent Application Publication No. 2016-535636

  This conventional connector system comprises a cylindrical male connector and a female connector inserted into the lower end of the male connector. The male connector includes a lid portion provided at the upper end of the male connector, a needle tube provided downward at the lid portion, a male side valve portion slidably provided in the male connector, and the male side. A compression spring is provided between the valve portion and the lid portion to bias the male side valve portion downward. The female connector is formed in a tubular shape, and a female side valve portion is provided at the upper end thereof.

  Before connecting the female connector to the male connector, the male side valve portion is located below the needle tube tip so that the needle tube tip is not exposed outside the male connector. When connecting the male connector to the female connector, insert the female connector into the male connector, press the male valve with the tip of the female connector, and further pass the needle tube tip through the male valve and female valve The female connector is connected to the male connector by pushing the female connector into the male connector.

  After transferring the drug solution, remove the female connector from the male connector. At this time, the needle tube is pulled out of the female side valve portion.

  However, since the scalpel-side valve portion is penetrated by the needle tube and a through hole is formed, when the needle tube is pulled out from the scalpel-side valve portion, the liquid medicine remaining in the needle tube may come out from the upper surface of the scalpel-side valve portion. Alternatively, there is a risk of vaporization and leakage to the outside.

  An object of this invention is to provide the connector system which can improve the sealing property of a chemical | medical solution even after removing a female connector from a male connector in view of the above point.

[1] In order to achieve the above object, the connector system of the present invention is
A male connector attached to a medical container capable of containing a drug solution, and a female connector connected to the male connector from below and attached to another medical container capable of containing a drug solution, and shielded from the outside air In a connector system for delivering the medical fluid between the medical containers,
The male connector is
A cylindrical male side main body part whose upper part is closed by a lid;
It communicates with the medical container through a through hole provided in the lid, and extends along the axis of the male main body and is relative to the female connector connected from below to the male main body. Needle tube which can be raised and lowered
The male-side main body portion is provided to extend along the axis, and is provided with a needle tube cylinder portion which is separated and surrounded by the outer periphery of the needle tube and which can be moved up and down relative to the female connector.
The female connector is
A tubular female side main body portion to which the other medical container can be attached at the lower portion;
A first valve portion provided on an upper portion of the female side main body portion and having a slit that can be opened and closed by pressing the cylinder portion for needle tube into a plane having elasticity and orthogonal to the axis;
And a second valve portion provided on the inside of the female side main body portion and disposed below the first valve portion and capable of being penetrated by the needle tube;
When the needle tube cylinder and the needle tube are in the raised position, the needle tube cylinder holds at least the tip of the needle tube and pushes the first valve in a state in which the needle tube tip is accommodated. It can be lowered to the open position,
The needle tube may be lowered to a position passing through the second valve portion.

According to the present invention, when connecting the female connector to the male connector, the tip end of the needle tube is in a state of being separated and surrounded by the outer periphery of the needle tube by keeping the needle tube cylindrical portion and the needle tube in the raised position. Can be stored, so that the needle tube tip can be prevented from being exposed to the outside.
Next, when the needle tube cylinder housing the tip of the needle tube is lowered to a position to push the first valve of the female connector, the slit of the first valve provided at the upper part of the female side main body It is opened by pushing in the cylinder part.
Next, when the needle tube stored in the needle tube cylinder is lowered to a position passing through the second valve unit, the second valve unit disposed below the first valve unit is penetrated by the needle tube.
Thereby, according to the connector system of the present invention, delivery of the medical fluid between the medical containers can be performed in a state of being shielded from the outside air.
On the other hand, according to the present invention, when removing the female connector from the male connector, it can be pulled out from the second valve portion by raising the needle tube and stored in the needle tube cylinder portion.
Then, the needle tube cylinder containing the tip of the needle tube can be pulled out of the first valve by raising it from the position pressed into the slit of the first valve, whereby the slit of the first valve is cut. The pressure on the needle tube cylinder is released and closed by its own elastic force.
Therefore, since the needle tube passes through the first valve portion in a state of being accommodated in the needle tube cylinder, the needle tube does not contact the first valve portion. Therefore, even if the chemical solution adheres to the needle tube, the chemical solution does not transfer to and adhere to the upper surface of the first valve portion.
In addition, even when the chemical solution adheres to the upper surface of the second valve portion when the needle tube is pulled out from the second valve portion, the slit of the first valve portion is closed above it, so the chemical solution is vaporized and the outside of the female connector Can be prevented from being exposed.
As described above, according to the connector system of the present invention, the sealing property of the chemical solution can be improved.

  [2] Further, in the present invention, in the female connector, the second valve portion is disposed apart from the first valve portion, and the female connector is surrounded by the female side main body portion, the first valve portion, and the second valve portion. Preferably, a closed space is formed.

  According to this configuration, the female connector is disposed with the second valve portion being separated from the first valve portion, thereby forming a space surrounded by the female side main body portion, the first valve portion, and the second valve portion. Thus, when the slit of the first valve portion is opened by the needle tube cylinder, the slit is accommodated in the space, and the slit does not contact the second valve portion. For this reason, even when the chemical solution adheres to the upper surface of the second valve when the needle tube is pulled out from the second valve, the chemical solution is prevented from adhering to the slit, and the sealing property of the chemical solution is further improved. be able to.

  [3] Further, in the present invention, the first valve portion is formed on the female side main body portion when the needle tube tubular portion is pushed into the first valve portion on the back surface of each of the first valve portions. It is preferable that a projection that abuts on the inner wall is provided.

  According to this configuration, when the needle tube cylinder portion is pushed into the first valve portion, the first valve portion is bent downward so as to be separated from the slit, and the protrusion of the back surface of the first valve portion is the female side body portion Contact the inner wall. The projection is held between the inner wall of the female side main body and the needle tube cylinder, and the gap between the inner wall of the female side main body and the needle tube cylindrical portion is eliminated. And since the tube part for needle tubes is urged to the axis line side of a main part by the 1st valve part by elasticity of a projection, it can be controlled so that a tube part for needle tubes may not move. As a result, the needle tube can be stably inserted and removed.

  [4] Further, in the present invention, the female connector is provided below the first valve portion inside the female side main body portion, and a guide receiving portion for guiding the tip end of the needle tube cylinder portion to the axial line side It is preferable to provide the convex part provided in the upper surface of a said 2nd valve part, and fitting in the lower end part of the said cylinder part for needle tubes.

  According to this configuration, the tip of the needle tube cylinder is guided to the axis by the guide receiving portion, and the lower end of the needle tube cylinder is fitted to the convex portion of the second valve. It can be positioned by the receiving part and the convex part, and the needle tube cylinder part can be prevented from moving more. As a result, the lower end of the needle tube cylinder can be positioned.

[5] In the present invention,
The male side main body portion is provided with an upper cylinder portion slidably fitted on the upper side of the middle cylinder portion and a lower cylinder portion slidably fitted on the lower side of the middle cylinder portion. Is configured to be stretchable,
The lid portion is provided on the upper portion of the upper cylinder portion,
The needle tube cylinder portion is formed in the middle cylinder portion so as to separate and surround the outer periphery of the tip end of the needle tube when the upper cylinder portion and the middle cylinder portion are extended.
It is preferable that the lower cylinder part has an attaching part for attaching the female connector, while separating and surrounding the tip of the needle tube cylinder part when the upper cylinder part or the lower cylinder part is extended.

  According to this configuration, it is possible to make the male-side main body portion expandable and contractible in two stages with a simple configuration by the upper cylindrical portion, the middle cylindrical portion and the lower cylindrical portion. Furthermore, since the needle tube cylinder portion is formed in the middle cylinder portion so as to separate and surround the outer periphery of the needle tube tip when the upper cylinder portion and the middle cylinder portion are extended, the upper cylinder portion and the middle cylinder are formed. The tip end of the needle tube can be stored in the needle tube cylinder only by extending the part. Furthermore, since the lower cylindrical portion has the attachment portion, the female connector can be easily attached from below.

[6] Also, in the present invention,
The female connector has a cylindrical insertion portion that protrudes upward to the upper portion of the female side main body portion and is formed to have a diameter smaller than the outer diameter of the female side main body portion, and sideways from the upper portion of the insertion portion It is preferable to have a pair of pins which protrude in and fit in the said attaching part.

  According to this configuration, the insertion portion having a diameter smaller than the outer diameter of the female side main body portion is formed to project upward, and a pair of pins project laterally from the upper portion of the insertion portion. The female connector can be attached to the male connector simply by inserting the insertion portion and locking the pair of pins to the attaching portion.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the connector system of this embodiment. The II-II sectional view taken on the line which shows the male connector of FIG. The disassembled perspective view which shows the closing mechanism of this embodiment. The perspective view showing the closing mechanism of this embodiment. The VV sectional view taken on the line which shows the female connector of FIG. FIG. 6A is an operation view showing a state before hooking the pin in the longitudinal groove and the inner cylinder longitudinal groove. FIG. 6B is an operation view showing a state before the pin is engaged with the longitudinal groove and the inner cylinder longitudinal groove and the female connector is rotated. FIG. 6C is an operation view showing a state in which the female connector is rotated and the pin is locked in the lateral groove. FIG. 7A is an operation view showing a state in which the door portion is closed. FIG. 7B is an operation view showing a state where the inner cylinder part is slightly rotated and the door part is in the process of being opened. FIG. 7C is an operation view showing a state in which the door portion is open. FIG. 8A is an operation view showing a state before connecting a female connector to a male connector. FIG. 8B is an operation view showing a state in which the insertion portion of the female connector is inserted into the inner cylindrical portion of the male connector. FIG. 8C is an operation view showing a state in which the door portion is open. FIG. 9A is an operation view showing a state where the needle tube cylinder is inserted into the opening of the female connector. FIG. 9B is an operation view showing a state in which the needle tube is penetrated through the second valve of the female connector. FIG. 9C is an operation view showing a state in which the needle tube and the tube portion for needle tube have been returned into the male connector. It is principal part sectional drawing of the state which connected the female connector to the male connector of this embodiment.

  A connector system 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the connector system 1 is for delivering a medical fluid between medical containers in a state of being shielded from the open air. The connector system 1 includes a male connector 10 attached to a medical container capable of containing a drug solution, and a female connector 50 connected to the male connector 10 and attached to another medical container capable of containing a drug solution. The male connector 10 and the female connector 50 are made of resin.

  As shown in FIGS. 1 and 2, the male connector 10 includes a cylindrical male side main body 11, a lid 12 closing the upper end of the male side main body 11, and a lower end of the male side main body 11. And a terminal portion 2 rotatably provided on the lid 12. The terminal portion 2 is formed with a terminal portion through hole 2a penetrating in the axial direction of the male side main body portion 11, and a tube (not shown) for leading physiological saline and the like from the infusion bag is connected.

  The male-side main body 11 includes a cylindrical upper cylinder 14 whose upper end is closed by a lid 12, a middle cylinder 15 axially slidably provided on the upper cylinder 14, and a middle cylinder A lower cylindrical portion 16 slidably provided in the cylindrical portion 15 in the axial direction, and a closing mechanism 30 closing the lower portion of the lower cylindrical portion 16 so as to open and close. The male connector 10 includes an upper cylindrical portion 14 slidably fitted on the upper side of the middle cylindrical portion 15 and a lower cylindrical portion 16 slidably fitted on the lower side of the middle cylindrical portion 15. It is configured to be stretchable in stages.

  The closing mechanism 30 includes a cylindrical outer cylindrical portion 31 and an inner cylindrical portion 32 which can rotate along the inner periphery of the outer cylindrical portion 31. At the lower end portion of the outer cylindrical portion 31, a retainer 33 for preventing the female connector 50 from coming off the male connector 10 is provided. A groove for fixing the female connector 50 to the inner cylindrical portion 32 so as to restrict the circumferential movement of the female connector 50 in order to turn the inner cylindrical portion 32 together with the female connector 50 at the lower end portion of the inner cylindrical portion 32 The fixed part 34 of the shape of a letter is provided. In this manner, the female connector 50 can be attached to the closing mechanism 30 by the retainer 33 and the fixing portion 34. The closing mechanism 30 is also a mounting portion for mounting the female connector 50.

  The female connector 50 includes a cylindrical female side main body portion 51, and a cylindrical insertion portion 52 formed to a diameter smaller than the outer diameter of the female side main body portion 51 and inserted into the inner cylindrical portion 32 of the male connector 10. A pair of pins 53 projecting laterally from the insertion portion 52 and fitted to the retaining portion 33 of the outer cylinder portion 31 and the fixing portion 34 of the inner cylinder portion 32 and provided to close the upper end of the insertion portion 52 An end portion 54, an opening 55 formed at the center of the end portion, and a first valve portion 56 for opening and closing the opening 55 are provided.

Hereinafter, the specific configuration of the male connector 10 will be described.
The upper cylinder portion 14 is integrally formed with a lid portion 12. The lid 12 has a connecting portion 17 formed on the upper surface 12a along the axis of the male main body 11, and a needle tube fixing portion 18a formed on the center of the lower surface 12b. In the needle tube fixing portion 18a, a through hole (hereinafter referred to as a lid portion through hole) 18 in which the needle tube 3 is inserted and fixed is formed. The needle tube 3 is in communication with the medical container through the lid through hole 18 and extends along the axis of the upper cylindrical portion 14.

  The connection portion 17 is provided with an O-ring 19 into which a part of the terminal portion 2 is inserted, and a pressing member 21 for pressing the O-ring 19.

  The upper cylindrical portion 14 protrudes outward to the lower portion, an upper cylindrical engaging portion 22 formed to protrude inward at the lower portion, an upper cylindrical slit 14 a formed to be cut upward from the lower end portion, and And a claw portion 14b which is formed swingably.

  The middle cylinder portion 15 is formed with a middle cylinder flange portion 23 formed so as to project outward at the upper portion, a middle cylinder engagement portion 24 formed so as to project inwardly at the lower portion, and upward from the lower end portion. And a middle cylinder slit 15a formed to be cut.

  Further, the middle cylinder portion 15 is formed at the upper portion and is provided with a top plate portion 27 which is continuous with the middle cylinder flange portion 23, a top plate through hole 27a formed at the center of the top plate portion 27, and the top plate through hole 27a. A tube portion 28 for needle tube which is formed to extend downward from the edge of the needle tube and surrounds the outer peripheral direction of the needle tube 3; and a needle tube opening 28a formed at the tip of the tube portion 28 for needle tube and through which the needle tube 3 can pass. There is. A rubber member 29 is provided at the tip of the needle tube cylinder 28 so as to pierce the tip of the needle tube 3. The needle tube cylinder 28 extends along the axis of the male main body 11, and when the upper tube 14 and the middle tube 15 are extended, the outer periphery of the tip of the needle tube 3 is separated and surrounded.

  The lower cylindrical portion 16 is a lower cylindrical flange portion 25 formed so as to protrude outward in the upper portion of the lower cylindrical portion 16 and a lower portion formed so as to protrude outward in the lower portion of the lower cylindrical portion 16. The lower cylinder portion 16 is provided with a lower cylinder slit 16a which is formed to be cut upward from the lower end portion. Then, when the upper cylinder portion 14 to the lower cylinder portion 16 are extended, the tip end of the needle tube cylinder portion 28 is separated and enclosed in the lower cylinder portion 16 and a closing mechanism (attachment portion) 30 for attaching the female connector 50 Is provided.

  As shown in FIGS. 2 to 4, the closing mechanism 30 has a cylindrical outer cylinder portion 31, an inner cylinder portion 32 relatively movable along the inner circumference of the outer cylinder portion 31, and the outer cylinder portion 31. A pair of door portions 41 which are displaced according to the relative movement of the inner cylindrical portion 32 to open and close the outer cylindrical portion 31 or the lower portion of the inner cylindrical portion 32 is provided. In the present embodiment, the relative movement of the inner cylindrical portion 32 with respect to the outer cylindrical portion 31 is rotation of the inner cylindrical portion 32 with respect to the outer cylindrical portion 31.

  The outer cylindrical portion 31 is formed so as to pass through the outer cylindrical flange portion 31 a which is formed on the upper end portion of the outer cylindrical portion 31 so as to project outward and inward and the upper side wall of the outer cylindrical portion 31 It has a rectangular fixing hole 31b, and a stopper 33 formed so as to cut out the lower side wall of the outer cylindrical portion 31 in an L shape in side view.

  The disc suspending portion 37 includes an upper disc portion 35 formed in an annular shape, a pair of suspending portions 36 formed to be suspended downward from the upper disc portion 35, and the suspending portion 36. A hole 36a formed on the lower surface of the disc, a disc through hole 35a formed to penetrate vertically through the center of the upper disc portion 35, and an edge of the disc through hole 35a to have elasticity An annular rubber 35 b formed in an annular shape and a claw 35 c formed on the outer periphery of the upper disc portion 35.

  The base portion 38 extends upward from the annular plate portion 39 outside the guide rail 42, and an annular plate portion 39 formed in an annular shape, a pair of guide rails 42 projecting upward from the annular plate portion 39, and A pair of pillars 43 is provided. A through hole 39a is formed in the center of the annular plate 39, and a pair of pillars 43 extend in parallel so as to sandwich the through hole 39a.

  The inner cylindrical portion 32 includes a pair of arms 44 formed on the inner periphery of the inner cylindrical portion 32, a support hole 44a formed to penetrate up and down at the tip end of the arms 44, and an inner cylindrical portion A pair of notches 48 formed in a rectangular shape on the side wall of 32 is provided. The arm 44 extends from one circumferential end of the notch 48 along the notch 48 and then bends in the inner circumferential direction and further extends to form a generally L-shape as a whole. The notch 48 is formed to receive a part of the arm 44 when the arm 44 is expanded as described later.

  The door portion 41 has a crescent shape in plan view, and includes a raising pin 45 formed to rise upward at an end portion of the upper surface, and a crescent-shaped door elastic portion 46 provided on the lower surface and having elasticity. The lower surface is provided with a pair of groove portions 47 which are formed to be fitted to the pair of guide rails 42 respectively.

The assembly of each component in the male connector 10 described above and the operation between each component will be described.
In the male-side main body portion 11, an inner cylindrical portion 15 is attached to the inside of the upper cylindrical portion 14 so as to be slidable in the vertical direction. The sliding of the middle cylinder portion 15 is restricted by the middle cylinder flange portion 23 coming into contact with the upper cylinder locking portion 22. And the lower cylinder part 16 is slidably attached to the inner side of the middle cylinder part 15 in the up-down direction. The sliding of the lower cylindrical portion 16 is restricted by the lower cylindrical flange portion 25 abutting on the middle cylindrical engaging portion 24.
Furthermore, the closing mechanism 30 is attached to the lower cylindrical portion 16 by holding the lower cylindrical engaging portion 26 between the inner side of the outer cylindrical flange portion 31 a and the upper disc portion 35.

  With such a configuration, the male side main body portion 11 can expand and contract in the vertical direction, and the tip end of the needle tube 3 attached to the upper cylindrical portion 14 is provided in the middle cylindrical portion 15 in the longest lengthened state. It will be in the state where it was pierced and stored in the rubber member 29 which was made. Further, in the state where the male side main body portion 11 is shortest, the male side main body portion 11 is maintained in the shortened state by locking the claw portion 14b of the upper cylindrical portion 14 to the outside of the outer cylinder flange portion 31a. be able to.

In the closing mechanism 30, the disc suspension portion 37 is inserted into the outer cylinder portion 31 from below, and the disc suspension portion 37 is attached to the outer cylinder portion 31 by engaging the claws 35 c with the fixing holes 31 b.
Next, the inner cylindrical portion 32 and the base portion 38 are sequentially inserted from below into the outer cylindrical portion 31, and the pillar portion 43 of the base portion 38 is inserted into the hole 36 a of the hanging portion 36 attached to the outer cylindrical portion 31. Press fit.

  At this time, the door portion 41 is attached in advance in a state in which the raising pins 45 are respectively inserted into the support holes 44 a of the arms 44 provided in the inner cylinder portion 32, and the groove portions 47 are fitted in the guide rails 42. It is sealed by the base portion 38 in the closed state. Since the raising pin 45 is rotatable with respect to the support hole 44 a of the arm 44, the door portion 41 can slide along the guide rail 42.

  The door portion 41 is urged in the closing direction by the elastic force of the arm 44 provided in the inner cylindrical portion 32, and the through hole 39a of the base portion 38 is closed by the door elastic portion 46 of the door portion 41. .

Next, the retainer 33 of the male connector 10 and the fixing portion 34 of the female connector 50 will be described in detail.
As shown in FIG. 2 to FIG. 4 and FIG. 6A, the retaining member 33 of the outer cylinder part 31 is formed from a vertical groove 33a formed along the axial direction from the lower end of the outer cylinder part 31 and the upper end of the vertical groove 33a. It comprises an outer cylinder L-shaped groove in a side view L-shape which is constituted by a lateral groove 33b formed in the circumferential direction. That is, the retainer 33 is an outer cylinder L-shaped groove. The fixed portion 34 of the inner cylindrical portion 32 is formed along the axial direction from the lower end portion of the inner cylindrical portion 32 and is formed of an inner cylindrical longitudinal groove 34 a overlapping the longitudinal groove 33 a of the outer cylindrical L-shaped groove 33.

Next, the specific configuration of the female connector 50 will be described.
As shown in FIGS. 1 and 5, the female connector 50 is provided at the lower part of the tubular female side main body 51 to which another medical container can be attached, and provided on the upper side of the female side main body 51 and perpendicular to the axis. The first valve portion having a slit 56c that can be opened and closed by pushing the needle tube cylinder portion 28 (see FIG. 2) onto the surface to be held, and a cylindrical shape supporting the first valve portion 56 inside the female side main body portion 51. A second valve portion 58 which is provided at a lower portion inside the valve support cylindrical portion 57 so as to be separated downward from the first valve portion 56 and close the lower portion of the valve support cylindrical portion 57; A tubular female side sub-cylindrical portion 61 is provided which is inserted from the lower side of the valve portion 58 to the inside of the female side body portion 51 and closes the lower portion of the female side body portion 51.

  The female side main body portion 51 has a cylindrical insertion portion 52 formed to project upward at the upper portion, a pair of pins 53 projecting laterally from the upper portion of the insertion portion, and the upper end of the insertion portion 52 It has an end 54 formed to be closed and an opening 55 formed at the center of the end 54.

  The first valve portion 56 has elasticity, is formed on the back surface of each of the first valve portion 56 divided from the center by the slit 56 c and protrudes downward, and is formed on the outer peripheral portion thereof. And a hanging portion 56b extending downward along the inner wall of the housing.

  The valve support cylinder 57 includes an upper end support 57a formed at an upper portion and supporting the first valve 56, an extension 66 formed to be protruded toward the axis from an intermediate portion in the vertical direction, and an extension 66 It has an extension portion through hole 66a formed in the central portion, and a guide receiving portion 67 formed to project upward from the edge of the extension portion through hole 66a.

  The second valve portion 58 is elastic, and includes a convex portion 68 formed on the upper surface so as to project upward, and an annular groove 69 formed to be annularly recessed on the lower surface.

  The female sub-tubular portion 61 is formed at an upper portion and supports an annular sub top plate portion 61a that supports the valve support cylindrical portion 57, and a communicating inner tubular portion 64 extending downward from the central opening of the sub top plate portion 61a. The annular groove of the second valve portion 58 is formed by projecting upward from the upper surface of the rib 62 formed to extend in the vertical direction on the outer periphery, the screw portion 63 formed on the inner periphery, and the sub top plate 61a. And a valve lower side support portion 65 fitted to the end portion 69.

The assembly of each part in the female connector 50 described above and the operation between each part will be described.
In the female connector 50, the first valve portion 56 and the valve support cylindrical portion 57 are sequentially inserted into the female side main body portion 51 from below. Thus, the first valve portion 56 is held between the valve support cylindrical portion 57 and the end portion 54 of the female side main body portion 51.

  Further, the second valve portion 58 and the female side sub-cylindrical portion 61 are sequentially inserted into the female side main body portion 51 from below. As a result, the second valve portion 58 is held between the valve lower side support portion 65 of the female side sub-cylindrical portion 61 and the protruding portion 66 of the valve support cylindrical portion 57. Further, the female sub-sub-tube portion 61 is press-fitted into the female-side main body portion 51, and the lower end of the valve support tubular portion 57 is supported by the sub top plate portion 61 a of the female sub-sub-tube portion 61.

  In addition, a second valve portion 58 is disposed separately from the first valve portion 56 downward, and a closed space is formed by the first valve portion 56, the valve support cylindrical portion 57, and the second valve portion 58.

The operation of fixing and removing the female connector 50 to the male connector 10 described above will be described below.
As shown in FIG. 6A, the female connector 50 is moved as shown by arrow (1), and the pin 53 is fitted in the longitudinal groove 33a and the inner cylinder longitudinal groove 34a.

  Although the male connector 10 is fixed and the female connector 50 is moved for convenience, the present invention is not limited thereto, and the male connector 10 may be moved with respect to the fixed female connector 50, that is, male It does not matter as long as the female connector 50 is moved relative to the connector 10.

  As shown in FIG. 6B, the female connector 50 is rotated as shown by the arrow (2), and the pin 53 is moved to the lateral groove 33b as shown by the arrow (3). At this time, in the male connector 10, the inner cylindrical portion 32 rotates in a state where the outer cylindrical portion 31 is fixed.

  As shown in FIG. 6C, the pin 53 abuts on the end of the lateral groove 33b, and the rotation of the female connector 50 is restricted. When the pin 53 abuts on the lower side of the lateral groove 33 b and the downward movement of the pin 53 is restricted, the female connector 50 is fixed to the male connector 10 and prevented from coming off.

  As described above, when the female connector 50 is attached to the fixed portion 34 provided in the inner cylindrical portion 32, the movement of the female connector 50 in the circumferential direction with respect to the inner cylindrical portion 32 is restricted. By rotating relative to the portion 31, the inner cylindrical portion 32 can be easily rotated.

Next, the operation of the door 41 will be described.
Immediately after connecting the female connector 50 (FIG. 6B) to the male connector 10, as shown in FIG. 7A, in the male connector 10, the door portion 41 is in a closed state. By rotating the female connector 50 shown in FIG. 6B from here, the inner cylindrical portion 32 is moved as shown by the arrow (4).

  As a result, as shown in FIG. 7B, the arm 44 also rotates with the rotation of the inner cylindrical portion 32, the raising pin 45 of the door portion 41 is pulled by the arm 44, and the door portion 41 starts to open. At this time, since the moving direction of the door portion 41 is regulated by the guide rail 42, the door portion 41 moves along the guide rail 42 as indicated by the arrow (5), and the curved arm 44 is indicated by the arrow (6). So that the curvature is reduced.

  As shown in FIG. 7C, at the position at which the rotation of the inner cylindrical portion 32 is restricted, the door portion 41 is fully opened, and the needle tube cylindrical portion 28 (see FIG. 2) and the needle tube 3 are inserted into the through hole 39a. It becomes possible. When the door 41 is open, the arm 44 is spread outward. Since the inner cylindrical portion 32 is formed with a notch 48 for escaping the arm 44, it is possible to prevent the deformation spreading to the outside of the arm 44 from being hindered.

  As described above, since the door 41 is supported by the arm 44 urging the door 41 in the closing direction, the through hole 39 a provided in the base 38 can be sealed. Then, when the inner cylindrical portion 32 is rotated with respect to the outer cylindrical portion 31, the door portion 41 is pulled by the arm 44 provided in the inner cylindrical portion 32 and tends to rotate together with the inner cylindrical portion 32. However, since the door portion 41 is guided by the guide rails 42 of the base portion 38 provided in the outer cylinder portion 31, the rotational motion of the door portion 41 is changed by the elasticity of the arm 44 itself while the guide rail is deformed. As a result, the door portion 41 moves outward of the through hole 39a from the state of closing the through hole 39a above the through hole 39a, and the closing mechanism 30 is opened. Be Therefore, according to this configuration, the female connector 50 can be connected to the male connector 10 and the closing mechanism 30 can be opened only by inserting the female connector 50 into the male connector 10 and rotating it.

Next, the process of inserting the needle tube 3 into the female connector 50 will be described. For convenience, in FIG. 8, the female connector 50 is fixed, and the male connector 10 is moved.
As shown in FIG. 8A, the male connector 10 is moved to the female connector 50 as shown by the arrow (7).
Then, as shown in FIG. 8B, the female connector 50 is inserted into the opening 13 of the male connector 10.

  As shown in FIG. 8C, since the pin 53 of the female connector 50 is fitted to the fixing portion 34, the rotation of the inner cylindrical portion 32 of the male connector 10 is restricted. The door portion 41 is opened by rotating the outer cylindrical portion 31 of the male connector 10 until the pin 53 abuts on the end of 33b (see FIG. 6C) as shown by the arrow (8).

  When connecting the male connector 10 to the female connector 50, the entire male connector 10 is first extended so that the tip of the needle tube 3 is surrounded by the needle tube cylinder 28 and the tip of the needle tube cylinder 28 is surrounded by the lower tube 16 In this state, the female connector 50 can be attached to the closing mechanism (attachment portion) 30 of the male connector 10, so that the needle tube 3 of the male connector 10 communicating with the medical container containing the drug solution is prevented from being exposed to the outside can do.

  As shown in FIGS. 9A and 10, when the upper cylindrical portion 14 and the middle cylindrical portion 15 are lowered along the axis with respect to the lower cylindrical portion 16, the entire length of the male connector 10 is contracted by the first step. The needle tube cylinder 28 passes through the through hole 39a. Further, the needle tube cylindrical portion 28 projects from the lower side of the lower cylindrical portion 16 and is pushed into the slit 56 c of the first valve portion 56 to open the slit 56 c, and the tip thereof abuts on the guide receiving portion 67.

  As shown in FIGS. 9B and 10, when the upper cylinder portion 14 is lowered along the axis with respect to the middle cylinder portion 15, and the entire length of the male connector 10 is contracted in the second stage, the lid portion 12 of the upper cylinder portion 14 is The attached needle tube 3 penetrates the rubber member 29 (see FIG. 10) of the needle tube cylindrical portion 28, and the needle tube 3 protrudes from the tip of the needle tube cylindrical portion 28 and penetrates the second valve portion 58. The distal end of the female connector 50 is inserted into the female connector 50. In this way, the vial and the infusion bag can exchange the solution in which the anticancer agent is dissolved, etc., through the connector system 1 and deliver the medical solution between the medical containers in a state of being shielded from the outside air. be able to.

Next, the process of pulling out the needle tube 3 from the female connector 50 will be described.
As shown in FIG. 9C, after exchanging the solution, first, the upper cylinder portion 14 is raised relative to the middle cylinder portion 15, and the needle tube 3 attached to the upper cylinder portion 14 is moved from the second valve portion 58. It pulls out and accommodates in the cylinder part 28 for needle tubes. As a result, the needle tube 3 is housed above the lower end of the needle tube cylinder 28. In this state, when the upper cylinder portion 14 and the middle cylinder portion 15 are raised with respect to the lower cylinder portion 16, the needle tube cylinder portion 28 is pulled out of the first valve portion 56, and the first valve portion 56 is elastic by its own elasticity. It is closed. Thereafter, the male connector 10 is pivoted to close the door portion 41.

  Thereby, since the door part 41 is closed, the needle tube 3 can be confined in the closed space. The closed space is a space surrounded by the male side main body 11 (including the lid 12), the needle tube cylinder 28 and the door 41.

  The needle tube 3 has a tubular male side body 11 and a lid 12 for closing the upper end of the male side body 11 above the female connector 50 connected to the opening 13 of the male side body 11. It is disposed in a closed space formed by a closing mechanism 30 which openably closes the lower portion of the male side body 11. Then, the closing mechanism 30 is displaced in response to the relative movement of the inner cylindrical portion 32 with respect to the outer cylindrical portion 31 constituting itself, and the lower door portion 41 opens and closes. Therefore, after the door portion 41 is opened, the needle tube 3 is moved downward to the female connector 50, and a drug solution is injected from an infusion bag or the like connected to the connection portion 17 (see FIG. 2) provided on the lid 12 The dissolved and diluted drug solution can be returned to an infusion bag or the like.

  Then, after the needle tube 3 is returned to the original position, the inner tube portion 32 is moved in the direction opposite to the relative movement to close the door portion 41, whereby the needle tube 3 can be stored in the closed space. .

  In other words, when disconnecting the male connector 10 from the female connector 50, the needle tube 3 is first pulled out of the second valve portion 58 by performing the operation reverse to the operation of retracting the male connector 10 in two steps. The needle tube cylinder 28 is enclosed by the portion 28, and the needle tube cylinder 28 is removed from the first valve 56 and housed in the lower cylinder 16.

  Accordingly, since the needle tube 3 does not contact the first valve portion 56 on the upper surface of the female connector 50, the medical fluid remaining in the needle tube 3 does not adhere to the first valve portion 56. Further, since the slit 56c of the first valve portion 56 is closed when the pressing of the needle tube cylinder portion 28 is released, even if the chemical solution adheres to the upper surface of the second valve portion 58, the chemical solution is the knife side main body Since it is sealed in the space enclosed by the portion 51 and the first valve portion 56 and the second valve portion 58, it is not exposed to the outside of the female connector even if it is vaporized. In the female connector, a space surrounded by the female side main body, the first valve and the second valve is formed by the second valve being separated from the first valve, and thus the needle connector When the slit of the first valve portion is pushed open by the cylindrical portion, the slit 56c is accommodated in the space, and the slit 56c does not contact the second valve portion. Therefore, even when the chemical solution adheres to the upper surface of the second valve portion when the needle tube is pulled out from the second valve portion, the chemical solution can be prevented from adhering to the slit 56c. As described above, according to the connector system 1 of the present invention, the sealing property of the chemical solution can be improved.

  Further, when connecting the male connector 10 to the female connector 50, the needle tube cylinder 28 is moved to the female side main body 51 to push and open the first valve unit 56, and then stored in the needle tube cylinder 28 The needle tube 3 penetrates the second valve portion 58 so that the needle tube 3 contacts only the second valve portion 58. Conversely, when removing the male connector 10 from the female connector 50, the needle tube 3 is pulled out from the second valve portion 58, and the needle tube 3 is housed so as to be surrounded by the needle tube cylindrical portion 28. As the needle tube 3 is pulled out of the first valve portion 56, the needle tube 3 does not contact the first valve portion 56.

  For this reason, the medical fluid remaining in the needle tube 3 does not adhere to the first valve portion 56. Furthermore, since the first valve portion 56 is divided from the center by the slit 56c (see FIG. 5) and has elasticity, it is returned and closed when the needle tube cylinder portion 28 is pulled out. As a result, the drug solution is not exposed to the outside of the female connector 50, and the sealing property of the drug can be improved even after use.

  When connecting the male connector 10 to the female connector 50, the needle tube cylinder 28 of the middle cylinder 15 is lowered by lowering the upper cylinder 14 and the middle cylinder 15 along the axis with respect to the lower cylinder 16. When it passes through the through hole 39a, pushes the first valve portion 56 open and descends further, as shown in FIG. 10, the needle tube tubular portion 28 comes in contact with the guide receiving portion 67. At this time, in the first valve portion 56, the first valve portion 56 divided from the central slit is bent downward, and the projection 56a is in contact with the hanging portion 56b, and so-called play is eliminated. Therefore, the needle tube cylinder 28 can be firmly supported by the bent first valve 56.

  Further, since the outer peripheral portion of the first valve portion 56 is sandwiched between the upper end portion 54 and the lower valve support cylindrical portion 57, the first valve portion 56 is bent downward and pulled downward. Also, the outer peripheral portion of the first valve portion 56 does not come off between the end portion 54 and the valve support cylindrical portion 57.

  Further, the tip end of the needle tube cylindrical portion 28 is guided by the guide receiving portion 67 toward the axial line, and the needle tube opening 28 a of the needle tube cylindrical portion 28 is fitted in the convex portion 68. The tip end of the needle tube cylindrical portion 28 is sandwiched between the guide receiving portion 67 and the convex portion 68, so that the needle tube cylindrical portion 28 can be supported more firmly. Since the needle tube cylinder 28 can be restrained from moving, the needle tube 3 can be stably inserted and removed, and the drug remaining at the tip of the needle tube 3 can be made difficult to scatter.

  In this embodiment, the door 41 is moved on the base 38 in the direction perpendicular to the axis of the male main body 11, and the door 41 is opened and closed like a sliding door, but the present invention is not limited thereto. The door portion 41 is swingably provided on the male side body portion 11 via a hinge, and a member movable in the axial direction of the male side body portion 11 is provided, and the door portion is pushed by this member 41 may be configured to open and close like a door.

  Further, the door portion 41 is provided swingably to the outer cylinder portion 31 via a hinge, the inner cylinder portion 32 is provided slidably with respect to the outer cylinder portion 31, and the inner cylinder portion 32 is pressed against the door portion 41. Thus, the door 41 may be configured to be opened and closed like a door. As described above, as long as the door portion 41 for opening and closing the lower portion of the male-side main body portion 11, the outer cylinder portion 31, or the inner cylinder portion 32 is provided, the opening / closing direction of the door portion 41 does not matter.

  In the embodiment, although the rubber member 29, the door elastic portion 46, the first valve portion 56, and the second valve portion 58 are made of synthetic resin having elasticity, the present invention is not limited to this. It does not matter.

  In the embodiment, the groove portion 47 of the door portion 41 is fitted to the guide rail 42, so that the door portion 41 linearly moves along the guide rail 42. However, the present invention is not limited to this. By fitting the whole between the guide rails 42, the door portion 41 may be moved linearly. Moreover, although the door part 41 was made into two, it is not limited to this, it does not interfere with making the door part 41 one or three.

  In the embodiment, the female connector 50 is connected to the male connector 10, and the needle tube 3 is lowered together with the needle tube cylinder 28 when the needle tube cylinder 28 pushes the slit 56c of the first valve unit 56 open. However, the present invention is not limited thereto, and only the needle tube cylinder 28 may be lowered first to push and open the slit 56 c of the first valve 56 and then the needle tube 3 may be lowered.

  In the embodiment, when removing the female connector 50 from the male connector 10, the needle tube 3 which has been penetrated through the second valve portion 58 is pulled out from the second valve portion 58, and then the needle tube 3 is lifted together with the needle tube cylinder 28 Although it was set as composition, it is not limited to this, needle tube 3 which had been made to penetrate to the 2nd valve part 58 is pulled out from the 2nd valve part 58, it is raised as it is, cylinder part 28 for needle tubes is raised afterwards, The first valve portion 56 may not be in contact.

DESCRIPTION OF SYMBOLS 1 connector system 3 needle tube 10 male connector 11 male side main body 12 lid 12a upper surface 12b lower surface 14 upper cylinder 15 middle cylinder 16 middle cylinder 16 lower cylinder 18 through hole (lid through hole)
28 Needle tube cylinder 30 Closing mechanism (mounting part)
Reference Signs List 50 female connector 51 female side main body portion 56 first valve portion 56a protrusion 56c slit 58 second valve portion 67 guide receiving portion 68 convex portion

Claims (6)

A male connector attached to a medical container capable of containing a drug solution, and a female connector connected to the male connector from below and attached to another medical container capable of containing a drug solution, and shielded from the outside air In a connector system for delivering the medical fluid between the medical containers,
The male connector is
A cylindrical male side main body part whose upper part is closed by a lid;
It communicates with the medical container through a through hole provided in the lid, and extends along the axis of the male main body and is relative to the female connector connected from below to the male main body. Needle tube which can be raised and lowered
The male-side main body portion is provided to extend along the axis, and is provided with a needle tube cylinder portion which is separated and surrounded by the outer periphery of the needle tube and which can be moved up and down relative to the female connector.
The female connector is
A tubular female side main body portion to which the other medical container can be attached at the lower portion;
A first valve portion provided on an upper portion of the female side main body portion and having a slit that can be opened and closed by pressing the cylinder portion for needle tube into a plane having elasticity and orthogonal to the axis;
And a second valve portion provided on the inside of the female side main body portion and disposed below the first valve portion and capable of being penetrated by the needle tube;
When the needle tube cylinder and the needle tube are in the raised position, the needle tube cylinder holds at least the tip of the needle tube and pushes the first valve in a state in which the needle tube tip is accommodated. It can be lowered to the open position,
The connector system, wherein the needle tube can be lowered to a position passing through the second valve portion. The connector system according to claim 1, wherein
In the female connector, the second valve portion is disposed apart from the first valve portion,
A connector system characterized in that a space surrounded by the female side main body portion, the first valve portion and the second valve portion is formed. The connector system according to claim 1 or 2, wherein
The first valve portion is provided on the back surface of each of the first valve portions with a protrusion that abuts against the inner wall of the female-side main body when the needle tube cylinder is pushed into the first valve portion. A connector system characterized by The connector system according to any one of claims 1 to 3, wherein
The female connector is provided on the lower side of the first valve portion inside the female side main body portion, and is provided on a top surface of the second valve portion and a guide receiving portion for guiding the tip of the needle tube cylindrical portion toward the axis. And a convex portion fitted to the lower end portion of the needle tube cylinder portion. The connector system according to any one of claims 1 to 4, wherein
The male side main body portion is provided with an upper cylinder portion slidably fitted on the upper side of the middle cylinder portion and a lower cylinder portion slidably fitted on the lower side of the middle cylinder portion. Is configured to be stretchable,
The lid portion is provided on the upper portion of the upper cylinder portion,
The needle tube cylinder portion is formed in the middle cylinder portion so as to separate and surround the outer periphery of the tip end of the needle tube when the upper cylinder portion and the middle cylinder portion are extended.
A connector system characterized in that the lower cylinder part separates and encloses the tip of the needle tube cylinder part when the upper cylinder part or the lower cylinder part is extended, and has a mounting part to which the female connector is attached. . The connector system according to claim 5, wherein
The female connector has a cylindrical insertion portion that protrudes upward to the upper portion of the female side main body portion and is formed to have a diameter smaller than the outer diameter of the female side main body portion, and sideways from the upper portion of the insertion portion A connector system comprising: a pair of pins projecting into and fitted in the mounting portion.