WO2014050429A1 - Valve body, medical-use connector and method for manufacturing valve body - Google Patents

Abstract

A valve body (3) connected to a male connector (R1), wherein a main unit portion (31) which has an end face (312U) that is exposed to the exterior and through which a slit (314), which is open to the end face (312U) and into which the male connector (R1) is inserted, extends in the interior thereof, and a cylindrical portion (32) which follows the direction in which the slit (314) extends through the main unit portion (31), and covers at least a portion of the main unit portion (31) along the circumferential direction with respect to the central axis of the main unit portion (31), are integrally formed.

Description

Valve body, medical connector, and method of manufacturing valve body

The present invention relates to a valve body, a medical connector, and a method of manufacturing the valve body, and more specifically, a valve body into which a male luer connector (male connector) provided in a medical instrument such as a syringe is inserted, and a medical device including the valve body. The present invention relates to a connector and a method for manufacturing the valve body.

Conventionally, a connector (valve element) capable of connecting a male connector provided in a medical instrument such as a syringe is known (see, for example, Patent Document 1).
The connector described in Patent Document 1 includes a housing constituted by an upper part and a lower part, and a septum attached to the housing. Among these, the housing is formed in a substantially cylindrical shape by a synthetic resin such as polycarbonate. The septum is formed of a material such as silicon or polyisoprene in a substantially H shape in the horizontal direction, and has an enlarged base end portion, an intermediate portion, and an enlarged end portion. In the septum, there are formed slits penetrating in the vertical direction through the enlarged base end portion, the intermediate portion, and the enlarged end portion. Such a septum is disposed in the housing so that the enlarged base end portion is placed on the upper surface of the upper portion of the housing, and the enlarged end portion is sandwiched between the upper portion and the lower portion of the housing. .

In such a connector, when the male connector is inserted into the slit of the septum, the slit is enlarged in diameter, the enlarged proximal end portion and the intermediate portion are bent in the distal side and the lateral direction, and the male connector penetrates the septum. To do. Thereby, a fluid can be flowed through a connector.
On the other hand, when the male connector is pulled out from the slit, it is restored by the restoring force of the septum and the slit is closed. This prevents fluid flow through the connector.
With such a connector, a fluid can flow through the connector without using a needle with a sharp tip or the like, so that accidents such as needle sticks can be prevented and leakage of fluid from the connector can be prevented.

JP 2005-511213 Gazette

Here, in the connector described in Patent Document 1, the septum and the housing are separate from each other, and as described above, the enlarged base end portion of the septum is disposed on the upper surface of the upper portion of the housing. When connecting the male connector to the connector, it is necessary to disinfect each surface of the septum and the housing with sake cotton (cotton soaked with alcohol for disinfection). During such disinfection work, the septum and housing There may be a case where unwiping remains occur in the gaps or joints. There is a possibility that bacteria in the air will adhere to and grow on these remaining portions. And if the male connector which contacted the said wiping remaining location is inserted in a septum, the possibility that the said microbe will mix will become high. For this reason, it is necessary to perform wiping work carefully so that no wiping residue occurs, and there is a problem that the work of connecting the male connector to the connector becomes complicated.

The objective of this invention is providing the manufacturing method of the valve body which can simplify the connection operation | work of a male connector, a medical connector, and a valve body.
Note that this application claims priority based on Japanese Patent Application No. 2012-215124 filed on Sep. 27, 2012, and incorporates all the content described in the Japanese application.

The valve body according to the first aspect of the present invention is a valve body connected to a male connector, and has an end face exposed to the outside, and a slit into which the male connector is inserted opens into the end face. A main body part that penetrates and a cylindrical part that covers at least a part of the main body part along a circumferential direction with respect to the central axis of the main body part along the direction in which the slit penetrates the main body part are integrally formed. It is formed.

According to the first aspect, the main body portion and the cylindrical portion are integrally formed, and therefore there are no gaps or joints that occur when they are configured separately. According to this, generation | occurrence | production of unwiping can be suppressed in the disinfection operation | work at the time of connecting a male connector to the slit formed in the main-body part. Therefore, the disinfection and wiping work can be simplified, and the male connector connection work can be simplified.

In the first aspect, the valve body is formed of a flexible material, and the cylindrical portion stands up from the body portion in a direction opposite to the insertion direction of the male connector into the slit. Preferably, it is formed and at least a part of the main body is covered by reversing the inner surface and the outer surface.
According to the first aspect, when the valve body is used, the cylindrical portion that stands up from the main body portion is reversed so that at least a part of the main body portion is covered, and the end face that opens the slit is formed. Expose. According to this, the main body portion and the cylindrical portion are integrally formed, and the cylindrical portion is inverted so as to cover the main body portion when in use, so that the cylindrical portion covers at least a part of the main body portion. The valve body can be easily formed.

In the first aspect, it is preferable that the cylindrical portion applies a stress to the main body portion in a direction to close the slit when the cylindrical portion is inverted.
According to the said 1st aspect, the stress to the direction which closes a slit is acted on a main-body part by a cylindrical part. Therefore, it can suppress reliably that a slit will be open | released in the state which the male connector is not connected.
In addition, if a slit is formed in the main body during the molding process of the valve body, the slit will be easily opened, but the slit will be blocked by the above stress, preventing the function of the valve body from being impaired. it can. Therefore, since the slit can be formed when the valve body is molded, the manufacturing process of the valve body can be simplified.

In the first aspect, the main body portion includes a support portion having a bottom surface, a tip portion having a flat surface facing the support portion, and a connection portion connecting the support portion and the tip portion, The slit penetrates the tip portion, the connection portion, and the support portion, and the support portion, the connection portion, and the tip portion are integrally formed, and the cylindrical portion is inverted from the cylindrical portion. In this case, it is preferable that a covering portion that covers the tip portion and at least a part of the connecting portion is provided, and the stress is applied to the connecting portion by the covering portion.

Here, the cylindrical part is formed integrally with the tip part. From this, when the outer edge of the tip and the inner edge of the cylindrical part are formed in a circular shape in plan view having the center at the same position, the direction in which the slit is closed when the cylindrical part is reversed ( In addition to stress in the direction perpendicular to the long axis direction of the slit and toward the center in the slit), the direction to open the slit (direction along the long axis direction of the slit and toward the center in the slit) Each stress is applied to the tip. In such a case, it is difficult to close the slit.
On the other hand, when the cylindrical portion is formed to have a dimension that covers almost all side surfaces of the main body portion so that the stress is applied to the support portion, the work of inverting the cylindrical portion becomes complicated. In addition, the outer diameter of the support portion changes depending on whether the slit is open or closed, making it difficult to fix the valve body.
On the other hand, according to the said 1st aspect, since the said stress acts on the connection part located between the support part which comprises a main-body part, and a front-end | tip part, it is easy to apply the stress to the direction which obstruct | occludes a slit. The slit can be reliably closed. In addition to the above, the reversing operation of the cylindrical portion can be easily performed, and the valve body can be stably fixed.

In the first aspect, it is preferable that the cylindrical portion has a fixing portion for fixing the instrument provided with the male connector on the outer surface when the cylindrical portion is inverted.
In addition, as a fixing | fixed part, the helical thread (male thread) along the center axis | shaft of a valve body can be illustrated, When the said instrument has a latching claw, the protrusion part engaged with the said latching claw, Or the recessed part by which the said latching claw is inserted can be illustrated.
According to the said 1st aspect, the instrument provided with the male connector inserted in a slit can be fixed to a valve body with a fixing | fixed part. Further, when the fixing portion is a screw thread and the tubular portion is fitted into the instrument, the valve body including the tubular portion is tightened by the instrument. According to this, the valve body and the instrument can be securely fixed, and the degree of adhesion between the edge of the slit and the male connector can be increased.

The valve body can be formed of flexible silicone rubber.
Here, when the valve body is formed of a resin such as PC (Polycarbonate) or PMMA (Polymethylmethacrylate), chemical cracks (solvent cracks) may occur due to a disinfectant or a specific agent.
On the other hand, if the valve body is made of flexible silicone rubber, the occurrence of the chemical cracks can be suppressed. Therefore, the valve body can be used stably. In addition, compared with the case where the valve body is formed with the said material, the adhesiveness of a slit and a male connector can be improved.

The medical connector according to the second aspect of the present invention includes the above-described valve body, a housing in which a space through which fluid flows is formed through the valve body, and an attachment member for attaching the valve body to the housing The housing includes a mounting surface on which the bottom surface of the valve body is mounted, a hole portion that opens to the mounting surface and communicates with the space, and a hole portion in the mounting surface. It has the rib located in the periphery and which contacts the said bottom face.

According to the said 2nd aspect, there can exist an effect similar to the above-mentioned valve body.
In addition, on the mounting surface on which the bottom surface of the valve body is mounted, a rib that contacts the bottom surface is formed around a hole that communicates with the space in the housing. According to this, when a valve body is attached to a housing, it can suppress that the clearance gap by tolerance etc. arises between the said bottom face and mounting surface. Therefore, it is possible to prevent fluid from leaking from between the valve body and the housing.

In the said 2nd aspect, the said cylindrical part has a flange part extended to radial direction outer side, and the said attachment member is a press part which presses the said flange part toward the mounting surface mentioned above, and the said attachment member It is preferable to provide an engaging portion for engaging the housing with the housing.
According to the said 2nd aspect, a valve body can be reliably fixed to a housing with an attachment member. At this time, the pressing portion of the mounting member presses the flange portion of the cylindrical portion, so that the swinging of the valve body on the tip side is suppressed compared to the case where the valve body is fixed by pressing only the support portion. The valve body can be stably fixed to the housing.

In the second aspect, on the outer peripheral side of the flange portion, a step portion into which the pressing portion is fitted is formed along the circumferential direction of the flange portion, and the pressing portion is in contact with the step portion. It is preferable that the valve body is pressed toward the mounting surface.
According to the said 2nd aspect, since the press part of an attachment member presses the level | step-difference part formed in the outer peripheral side of a flange part toward a mounting surface, a valve body can be fixed to a housing much more stably.

A medical connector according to a third aspect of the present invention includes the above-described valve body and a housing in which a space through which a fluid flows is formed through the valve body, and the housing includes the valve body. The valve body has a first recess to be fitted, and the valve body is attached to the housing such that a bottom surface of the valve body is brought into contact with a bottom portion of the first recess.

According to the said 3rd aspect, there can exist an effect similar to the above-mentioned valve body.
Further, the valve body is fixed to the housing by fitting into the first recess. According to this, compared with the case where the above-mentioned attachment member is used, the fixation of the valve body to a housing can be implemented easily. Therefore, the assembly process of the medical connector can be simplified.

In the third aspect, the side surface of the first recess is immersed in a direction perpendicular to the insertion direction of the valve body into the first recess, and at least a part of the outer peripheral portion of the valve body is fitted into the first recess. Two recesses are preferably formed.
In addition, the side surface of a 1st recessed part refers to the surface which cross | intersects the bottom part of the said 1st recessed part, and follows the depth direction of the said 1st recessed part.
According to the said 3rd aspect, the at least one part of the outer peripheral part of a valve body fits in a 2nd recessed part, and the omission of the said valve body from a 1st recessed part can be suppressed. Therefore, the valve body can be stably attached to the housing.

In the third aspect, the tubular portion has a flange portion extending radially outward, and a side surface of the first recess has a direction orthogonal to the insertion direction of the valve body into the first recess. It is preferable to form a third recess into which the flange portion is fitted.
According to the third aspect, by fitting the flange portion into the third recess, it is possible to prevent the valve body from coming off from the first recess as in the case where the second recess is formed. Therefore, the valve body can be stably attached to the housing. In addition, by fitting the flange portion into the third recess, the swing of the tubular portion in the valve body, that is, the swing on the tip end side can be suppressed.

In the method for manufacturing a valve body according to the fourth aspect of the present invention, the valve body has an end face exposed to the outside, and opens in the end face, and a slit into which the male connector is inserted penetrates the inside. A main body part, and a cylindrical part covering at least a part of the main body part along a circumferential direction with respect to a central axis of the main body part along a direction in which the slit penetrates the main body part, and the manufacturing The method encloses the cylindrical portion and the main body portion so as to surround the slit at the end surface and so that the cylindrical portion rises from the end surface in a direction opposite to the insertion direction of the male connector with respect to the slit. The inner surface of the cylindrical portion molded integrally is exposed to the outside, the outer surface of the cylindrical portion faces inward, and at least a part of the outer surface of the main body portion is covered. It is characterized by reversing the cylindrical part That.
According to the said 4th aspect, the above-mentioned valve body can be manufactured suitably. Further, if the valve body is formed of flexible silicone rubber, the reversing operation of the cylindrical portion can be easily and reliably performed.

The perspective view which shows the connector which concerns on 1st Embodiment of this invention. The disassembled perspective view which shows the connector in the said 1st Embodiment. Sectional drawing which shows the connector in the said 1st Embodiment. Sectional drawing which shows the connector in the said 1st Embodiment. Sectional drawing which shows the valve body in the said 1st Embodiment. Sectional drawing which shows the valve body in the said 1st Embodiment. The perspective view which shows the valve body before the process in the said 1st Embodiment. Sectional drawing which shows the valve body before the process in the said 1st Embodiment. Sectional drawing which shows the valve body before the process in the said 1st Embodiment. The perspective view which shows the valve body which is a modification of the valve body in the said 1st Embodiment. Sectional drawing which shows the valve body which is a modification of the valve body in the said 1st Embodiment. The perspective view which shows the valve body which the connector which concerns on 2nd Embodiment of this invention has. Sectional drawing which shows the valve body in the said 2nd Embodiment. The perspective view which shows the valve body which is the 1st modification of the valve body in the said 2nd Embodiment. Sectional drawing which shows the valve body which is the 1st modification of the valve body in the said 2nd Embodiment. The perspective view which shows the valve body which is the 2nd modification of the valve body in the said 2nd Embodiment. Sectional drawing which shows the valve body which is the 2nd modification of the valve body in the said 2nd Embodiment. The perspective view which shows the valve body which is the 3rd modification of the valve body in the said 2nd Embodiment. Sectional drawing which shows the valve body which is the 3rd modification of the valve body in the said 2nd Embodiment. The perspective view which shows the connector which concerns on 3rd Embodiment of this invention. Sectional drawing which shows the connector in the said 3rd Embodiment.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described based on the drawings.
1 and 2 are a perspective view and an exploded perspective view, respectively, showing a medical connector 1 according to the present embodiment.
A medical connector (hereinafter sometimes abbreviated as “connector”) 1 according to the present embodiment is provided between a tube such as a catheter inserted into a human body and a tube connected to an infusion bag or the like, such as a syringe. The male connector R1 (see FIG. 3) of the medical instrument can be connected. As shown in FIGS. 1 and 2, the connector 1 includes a housing 2, a valve body 3, and an attachment member 4 that attaches the valve body 3 to the housing 2.
In the following description, the Z direction is the mounting direction of the valve body 3 with respect to the housing 2 (in other words, the connection direction of the male connector with respect to the valve body 3). Further, the X direction is a major axis direction of a slit 314 described later, and the Y direction is a direction orthogonal to the Z direction and the X direction.

[Structure of housing]
FIG. 3 is a cross-sectional view of the connector 1 in the XZ plane.
The housing 2 is a casing made of synthetic resin having a rectangular parallelepiped shape. As shown in FIGS. 1 to 3, a male connection portion 21 protrudes from the end face of the housing 2 in the X direction, and a female connection portion 22 protrudes from the end face of the base end in the X direction. It is installed. Further, in the housing 2A, a space S (see FIG. 3) in which a fluid flows from one of the male connection portion 21 and the female connection portion 22 toward the other is formed. Note that the end surfaces on which the male connection portion 21 and the female connection portion 22 are provided are not limited to both end surfaces in the X direction. In other words, the protruding direction of each connecting portion 21 may not be the X direction.

FIG. 4 is a cross-sectional view of the connector 1 in the YZ plane.
The upper surface of the housing 2 is a mounting surface 23 on which the valve body 3 is mounted. As shown in FIGS. 2 to 4, the mounting surface 23 is formed with a hole 231 having a substantially circular shape in plan view connected to the space S. Further, a substantially annular rib 232 is provided around the hole portion 231 on the placement surface 23 as viewed from the Z direction. Further, a pair of substantially arc-shaped holes 233 that penetrate the housing 2 in the Z direction are formed on the mounting surface 23 at positions outside the ribs 232 and avoiding the space S. The engaging portions 42 of the attachment member 4 are inserted into the pair of holes 233, respectively. Note that the arc-shaped center of each hole 233 coincides with the center of the hole 231.

[Configuration of mounting members]
As shown in FIGS. 1, 2, and 4, the attachment member 4 presses and fixes the valve body 3 to the housing 2. The mounting member 4 includes a pressing portion 41 that presses the valve body 3 against the housing 2, and a pair of locking portions 42 that lock the mounting member 4 onto the housing 2.
The pressing portion 41 is formed in an annular shape, and a hole portion 411 through which a part of the valve body 3 is inserted is formed inside the pressing portion 41. When the attachment member 4 is attached to the housing 2, the pressing portion 41 abuts on a later-described stepped portion 324 of the valve body 3 placed on the placement surface 23, and the stepped portion 324 and thus the valve The body 3 is pressed toward the placement surface 23.

The pair of locking portions 42 hang down from positions near both ends of the pressing portion 41 in the radial direction. These locking portions 42 are each formed in a substantially arc shape when viewed from the direction opposite to the mounting direction (Z direction) to the housing 2, and the center of the arc shape coincides with the center of the annular pressing portion 41. To do. A locking claw 421 that locks the mounting member 4 to the bottom surface 24 of the housing 2 is formed at the tip of each locking portion 42.

When attaching such an attachment member 4 to the housing 2, as shown in FIG. 3, after placing the valve body 3 on the placement surface 23, each locking portion 42 is set to the corresponding hole 233. Insert each inside. When the locking portion 42 is further inserted, the locking claw 421 is engaged with the bottom surface 24. Accordingly, the attachment member 4 is locked to the housing 2 while pressing the valve body 3 against the mounting surface 23, and the valve body 3 is fixed to the housing 2.

[Structure of the disc]
FIG. 5 is a cross-sectional view of the valve body 3 in the XZ plane. FIG. 6 is a cross-sectional view of the valve body 3 in the XY plane, and is a cross-sectional view of the valve body 3 viewed from the Z direction (Z-direction base end side).
As shown in FIG. 3, the valve body 3 is in an open state when the male connector R <b> 1 is connected, allows fluid flow, and is in a closed state when the male connector R <b> 1 is not connected. It blocks the flow of fluid. In this embodiment, the valve body 3 is formed of flexible silicone rubber. As shown in FIGS. 4 to 6, the valve body 3 and a cylindrical portion located outside the main body portion 31 are provided. And 32 are integrally formed.

The main body 31 connects the support part 311 constituting the bottom part of the valve body 3, the distal end part 312 disposed opposite to the support part 311, and the center of the XY plane in each of the support part 311 and the distal end part 312. And a connection portion 313. Further, the main body 31 is formed with a slit 314 that penetrates the distal end portion 312, the connection portion 313, and the support portion 311 along the Z direction.
The slit 314 opens to the end surface 312U on the proximal end side in the Z direction in the distal end portion 312, and also opens to the bottom surface 311B that is the end surface on the distal end side in the Z direction in the support portion 311. Male connector R1 is inserted. When the male connector R1 is inserted, the slit 314 is expanded in diameter. When the male connector R1 is further inserted, the male connector R1 penetrates the valve body 3, and the tip portion of the male connector R1 is located in the space S in the housing 2, as shown in FIG.

The support portion 311 and the distal end portion 312 are formed in a substantially circular shape when viewed from the Z direction distal end side and the proximal end side, and the outer diameter size of the support portion 311 is larger than the outer diameter size of the distal end portion 312.
The connection part 313 is formed in a rectangular parallelepiped shape, and the outer diameter dimension of the connection part 313 (the dimension in the direction orthogonal to the central axis A of the valve body 3) is smaller than the outer diameter dimension of the distal end part 312. Moreover, as shown in FIG. 6, the cross section along the XY plane of the connection part 313 is a square, and the slit 314 is formed along the diagonal line which follows the X direction among the pair of diagonal lines of the said square. As shown in FIGS. 4 and 5, such a connection portion 313 contacts the inner surface of the cylindrical portion 32 located outside the connection portion 313 when the male connector R <b> 1 is not inserted into the slit 314. Not.

As shown in FIGS. 4 and 5, the cylindrical portion 32 is a cylindrical portion formed integrally with the distal end portion 312. The cylindrical portion 32 has the distal end portion 312 along the circumferential direction centering on the central axis A of the valve body 3 (the central axis A along the Z direction and passing through the center of the XY plane of the valve body 3). And a covering portion 321 that covers the side surface of the connecting portion 313 (a direction orthogonal to the Z direction) and an end portion on the distal end side in the Z direction of the cylindrical portion 32 that extends radially outward along the XY plane. And a flange portion 323 formed on the surface.

On the outer surface of the covering portion 321, a fixing portion 322 for fixing the medical instrument having the male connector R1 described above is provided. In the present embodiment, the fixing portion 322 is formed as a spiral thread along the central axis A of the valve body 3. As shown in FIG. 3, a lock nut R <b> 2 for maintaining the male connector R <b> 1 inserted in the slit 314 is attached to such a fixing portion 322.
As shown in FIGS. 4 to 6, a stepped portion 324 is formed on the outer peripheral side of the flange portion 323 along the outer periphery of the flange portion 323, as shown in FIGS. For this reason, the outer diameter dimension of the flange part 323 in the Z direction proximal end side is smaller than the outer diameter dimension in the Z direction distal end side. As shown in FIG. 4, the pressing portion 41 of the mounting member 4 is brought into contact with the stepped portion 324 when the valve body 3 is fixed to the housing 2.

[Valve structure during molding]
FIG. 7 is a perspective view showing the valve body 3 before processing. 8 and 9 are longitudinal sectional views along the XZ plane and the YZ plane showing the valve body 3 before processing.
The valve body 3 having the above configuration is formed in a substantially cylindrical shape as a whole as shown in FIGS. Specifically, in the valve body 3 at the time of molding, the cylindrical portion 32 rises in a cylindrical shape in the direction opposite to the Z direction from the outer peripheral edge of the tip portion 312, and the front and back sides are different during molding and use. It is formed to be the opposite.
In addition, in the valve body 3 before processing, as shown in FIGS. 8 and 9, on the inner surface of the rising portion from the tip portion 312 in the cylindrical portion 32 (the portion on the tip side in the Z direction in the cylindrical portion 32). A notch 325 (in other words, a notch 325 along the inner surface) along the circumferential direction of the cylindrical portion 32 is formed. By forming such a notch 325, the cylindrical portion 32 can be easily reversed in the reversing step of the valve body 3 described later.

[Valve reversing process]
When processing the valve body 3 when using the valve body 3 having the above-described configuration, the tubular portion 32 is turned upside down so as to cover the side of the distal end portion 312 and the connection portion 313. Accordingly, as shown in FIG. 5, in the cylindrical portion 32 of the valve body 3 at the time of molding, the thread 322 located on the inner surface of the covering portion 321 is changed to the covering portion 321 in the processed valve body 3. Exposed on the outer surface of the. In this state, the inner surface of the covering portion 321 (the surface opposite to the surface on which the screw thread 322 is formed) and the side surface of the tip portion 312 come into contact with each other, and the portions are crushed.
In the processed valve body 3 in which the tubular portion 32 is inverted in this way, a gap G is formed between the tubular portion 32 and the connection portion 313 of the main body portion 31. This is because, when the male connector R1 is inserted, when the slit 314, and thus the connecting portion 313, is expanded in diameter, the connecting portion 313 has a room to expand outward. When the diameter of the connection portion 313 is increased, the air in the gap G is discharged to the outside from between the flange portion 323 and the support portion 311 of the cylindrical portion 32. Thereby, it is suppressed that the diameter expansion of the connection part 313 is prevented with respect to the case where the gap G is sealed.

[Effect of the first embodiment]
The connector 1 according to the present embodiment described above has the following effects.
Since the main body portion 31 and the cylindrical portion 32 constituting the valve body 3 are integrally formed, the valve body 3 does not have gaps or joints generated when they are formed separately. According to this, generation | occurrence | production of the wiping residue can be suppressed in disinfection and the wiping work at the time of connecting male connector R1 to the slit 314. Therefore, the said operation | work can be simplified and by extension the connection operation | work to the valve body 3 of male connector R1 can be simplified.

When the valve body 3 is used, the cylindrical portion 32 rising from the distal end portion 312 in the direction opposite to the Z direction is reversed so that the side of the distal end portion 312 and the connecting portion 313 is covered. As a result, the main body 31 and the cylindrical portion 32 are integrally formed, and the cylindrical portion 32 is inverted so as to cover the main body 31 during use. The valve body 3 to cover can be formed easily.

A fixed portion 322 configured as a screw thread is provided on the outer surface of the inverted covering portion 321. According to this, the lock nut R2 of the medical instrument provided with the male connector R1 can be reliably fixed to the valve body 3 by the fixing portion 322. Therefore, the state in which the male connector R1 is inserted into the slit 314 can be maintained.
Further, since the fixing portion 322 is a thread, when the lock nut R2 is fixed to the valve body 3 by the fixing portion 322, the valve body 3 is tightened by the lock nut R2. According to this, the valve body 3 and the lock nut R2 can be reliably fixed, and the degree of adhesion between the edge of the slit 314 and the male connector R1 can be increased.

Since the said valve body 3 is formed with the silicone rubber which has flexibility, the inversion operation | work of the cylindrical part 32 can be implemented easily.
Here, when the valve body 3 is formed of a resin such as PC or PMMA, chemical cracks (solvent cracks) may occur due to a disinfectant or a specific agent.
On the other hand, in this embodiment, since the valve body 3 is formed of silicone rubber, the occurrence of the chemical cracks can be suppressed. Accordingly, the valve body 3 can be used stably, and the degree of adhesion between the edge of the slit 314 and the male connector R1 can be increased as compared with the valve body made of the resin.

On the mounting surface 23 on which the valve body 3 is mounted, ribs 232 that contact the bottom surface 311 </ b> B protrude from the periphery of the hole portion 231 that communicates with the space S in the housing 2. According to this, when the valve body 3 is attached to the housing 2, it can suppress that a clearance gap produces between the said bottom face 311B and the mounting surface 23. FIG. Accordingly, it is possible to suppress leakage of fluid from between the valve body 3 and the housing 2.

The mounting member 4 includes a pressing portion 41 that presses the flange portion 323 toward the placement surface 23, and a locking portion 42 that locks the mounting member 4 to the housing 2. According to this, the valve body 3 can be reliably fixed to the housing 2. At this time, since the pressing portion 41 presses the flange portion 323, it is possible to suppress the swinging of the valve body 3 on the distal end portion 312 side as compared with the case where the supporting body 311 is pressed and the valve body 3 is fixed. The valve body 3 can be stably fixed to the housing 2.

A stepped portion 324 that is pressed by the pressing portion 41 is formed along the circumferential direction of the flange portion 323 at the outer peripheral end of the flange portion 323. According to this, the flange part 323 and by extension, the outer edge of the valve body 3 can be pressed toward the mounting surface 23. Accordingly, the valve body 3 can be fixed to the housing 2 more stably.

[Modification of First Embodiment]
10 and 11 are a perspective view and a cross-sectional view showing a valve body 3A before processing as a modified example of the valve body 3. FIG. Among these, FIG. 11 is a cross-sectional view of the cross section along the XY plane in the connection portion 313A of the valve body 3A as viewed from the direction opposite to the Z direction (Z direction front end side).
In the connector 1 described above, the connection portion 313 in the XY plane has a square cross section, but may have other shapes such as a circle (including a perfect circle and an ellipse), another polygon, and a cross. . For example, the valve body 3A shown in FIGS. 10 and 11 may be used in place of the valve body 3.
The valve body 3A has the same configuration and function as the valve body 3 except that the connection part 313 is replaced with a connection part 313A having a substantially rectangular cross-sectional shape on the XY plane.

More specifically, the cross section of the connecting portion 313A along the XY plane is a substantially rectangular shape in which the longitudinal direction is along the X direction and the short side direction is along the Y direction. The both end edges in the X direction of the connecting portion 313A are arc-shaped, and the outer surface of the distal end portion 312 and the covering portion 321 in the molded valve body 3A (opposite to the surface on which the fixing portion 322 is formed). Side surface). That is, in the connecting portion 313A, the dimension passing through the center of the XY plane and connecting both ends in the X direction is the same as the outer diameter dimension of the distal end portion 312 and the cylindrical portion 32 during molding. For this reason, although illustration is omitted, in a state where the male connector R1 is not inserted into the slit 314, the connection portion 313A and the cylindrical portion 32 (covering portion 321) located outside the connection portion 313A are in contact with each other. do not do.
Even if it is a connector provided with such valve body 3A, there can exist an effect similar to the connector 1 provided with the above-mentioned valve body 3. FIG.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
The connector according to this embodiment has the same configuration as that of the connector 1 described above, but is different from the connector 1 in that stress in the direction of closing the slit is applied by the cylindrical portion. In the following description, parts that are the same as or substantially the same as those already described are assigned the same reference numerals and description thereof is omitted.

FIG.12 and FIG.13 is the perspective view and sectional drawing which show the valve body 5 before the process which the connector which concerns on this embodiment has. Specifically, FIG. 13 is a cross-sectional view of a cross section taken along the XY plane in the first elliptical portion 5131 constituting the connecting portion 513, as viewed from the direction opposite to the Z direction (Z direction front end side).
The connector according to the present embodiment has the same configuration and function as the connector 1 except that the valve body 5 is provided instead of the valve body 3. Further, as shown in FIGS. 12 and 13, the valve body 5 has the same configuration and function as the valve body 3 except that the connection body 313 is replaced with a connection part 513.

Each of the connection parts 513 has a configuration in which three first elliptical parts 5131 and second elliptical parts 5132 are alternately stacked along the Z direction, and the X direction is long like the connection part 313 described above. An axial slit 314 (see FIG. 13) is formed inside along the Z direction.
Among these, the first elliptical portion 5131 is formed in an elliptical shape with the long axis direction along the X direction and the short axis direction along the Y direction as viewed from the Z direction. Similarly, when viewed from the Z direction, the second elliptical portion 5132 is formed in an elliptical shape in which the major axis direction is along the Y direction and the minor axis direction is along the X direction.

As shown in FIG. 13, the minor axis of the second elliptical part 5132 and the major axis of the first elliptical part 5131 substantially coincide. On the other hand, the major axis of the second elliptical part 5132 is shorter than the outer diameter of the tip part 312 and the cylindrical part 32 during molding. However, when the cylindrical portion 32 is inverted so that the covering portion 321 covers the connection portion 513, the end portion 5133 on the Y-direction proximal end side and the distal end side of the second elliptical portion 5132 The inner surface of 321 (the surface opposite to the surface on which the fixing portion 322 is formed) is brought into contact.

Here, the valve body 5 including the cylindrical portion 32 is formed of a flexible silicone rubber in the same manner as the valve body 3 described above. From this, each end portion 5133 with which the inner surface of the covering portion 321 abuts is stressed in the direction toward the center of the second elliptical portion 5132, that is, a slit formed in the second elliptical portion 5132. Stress in the direction in which 314 closes is applied. Thereby, the closed state of the slit 314 in the state where the male connector R1 is not inserted is maintained.
When the diameter of the slit 314 is increased by the insertion of the male connector R1, the air in the gap G between the connection portion 513 and the covering portion 321 at a position where the connection portion 513 is not in contact with the flange portion 323 And the support portion 311.

[Effects of Second Embodiment]
According to the connector which concerns on this embodiment demonstrated above, in addition to the effect similar to the connector 1 mentioned above, there can exist the following effects.
After the reversing process, the covering portion 321 applies inward stress (stress in the direction toward the center of the valve body 5 in the XY plane) to both end portions 5133 in the Y direction of the second elliptical portion 5132 of the connection portion 513. . According to this, the closed state of the slit 314 when the male connector R1 is not inserted can be maintained.
In addition, since the covering portion 321 is formed to have a size that covers the side of the connecting portion 513, the covering portion 321 has a tubular shape as compared with the case where the covering portion 321 is formed to have a size that covers the side of the support portion 311. The reversing operation of the part 32 can be easily performed. In addition, the valve body 5 can be stably fixed by the attachment member 4 having the pressing portion 41 that presses the stepped portion 324 toward the placement surface as compared with the case where only the supporting portion 311 is pressed.

Here, if the slit 314 is formed at the time of molding of the valve body (for example, at the time of press molding), the slit 314 is easily opened. For this reason, although it is possible to form the said slit 314 after shaping | molding of a valve body, in this case, the manufacturing process of a valve body becomes complicated. On the other hand, since the closed state of the slit 314 can be maintained by the stress, the slit 314 can be formed when the valve body 5 is molded. Therefore, the manufacturing process of the valve body 5 can be simplified.

[First Modification of Second Embodiment]
In the valve body 5, the connection part 513 has a configuration including the three first elliptical parts 5131 and the second elliptical part 5132. However, the present invention is not limited to this, and the number of the first elliptical part 5131 and the second elliptical part 5132 can be changed as appropriate. For example, you may employ | adopt as a connector the valve body provided with the connection part which has the 1st elliptical part 5131 and the 2nd elliptical part 5132, respectively.

14 and 15 are a perspective view and a cross-sectional view showing a valve body 5A as a modified example of the valve body 5. FIG. Specifically, FIG. 15 is a cross-sectional view of the cross section along the XY plane in the second elliptical portion 5132 of the connection portion 513A as viewed from the direction opposite to the Z direction (Z direction tip side).
A valve body 5A that is a modification of the valve body 5 has the same configuration as the valve body 5 except that the connection part 513 is provided instead of the connection part 513. As shown in FIGS. 14 and 15, the connection portion 513A includes a first elliptical portion 5131 located on the proximal side in the Z direction and a second elliptical portion 5132 located on the distal side in the Z direction. And have. The first elliptical part 5131 and the second elliptical part 5132 are connected to each other, the first elliptical part 5131 is connected to the tip part 312, and the second elliptical part 5132 is connected to the support part 311. It is connected.

In the valve body 5A having such a configuration, when the cylindrical portion 32 is reversed, the covering portion 321 is similar to the above-described valve body 5 in that both end portions 5133 of the second elliptical portion 5132 located on the support portion 311 side. It abuts on both ends 5133 in the Y direction and applies the aforementioned stress. As a result, a stress on the inner side in the radial direction of the connecting portion 513A acts on each end portion 5133, thereby closing the slit 314 in a state where the male connector R1 is not inserted.
Even with the connector having the valve body 5A as described above, the same effects as those of the connector having the valve body 5 can be obtained.

[Second Modification of Second Embodiment]
The shape of the connecting portion to which the stress in the direction of closing the slit 314 is applied by the contact of the covering portion 321 is not limited to the configuration and shape of the connecting portions 513 and 513A. The configuration and shape may be acceptable. For example, you may employ | adopt the valve body in which the protrusion part which protrudes toward the coating | coated part 321 was provided in the connection part.

16 and 17 are a perspective view and a cross-sectional view showing a valve body 5B before processing as a second modification of the valve body 5. Specifically, FIG. 17 is a cross-sectional view of the cross section along the XY plane in the connection portion 513B as viewed from the direction opposite to the Z direction (Z direction front end side).
As shown in FIGS. 16 and 17, the valve body 5 </ b> B has the same configuration and function as the valve body 5 except that it has a connection portion 513 </ b> B instead of the connection portion 513.
The cross section along the XY plane of the connecting portion 513B is substantially cross-shaped as shown in FIG. In other words, the connecting portion 513B extends along the X direction, which is the major axis direction of the slit 314, and includes a base portion 513B1 in which the slit 314 is formed, a Y portion in the X direction center portion of the base portion 513B1, and a direction opposite to the Y direction. And a pair of protruding portions 513B2.

Among these, both end edges in the X direction of the base portion 513B1 are formed in an arc shape along the end edge of the distal end portion 312 in the same manner as the connection portion 313A described above. And the maximum dimension of the X direction in the said base part 513B1 is the same as the outer-diameter dimension of the front-end | tip part 312 and the cylindrical part 32 at the time of shaping | molding. That is, in the valve body 5B at the time of molding, as shown in FIG. 16, the outer surface of the both ends in the X direction of the base portion 513B1 is flush with the outer surfaces of the tip portion 312 and the cylindrical portion 32.

As shown in FIG. 17, each protrusion 513B2 protrudes from the base 513B1 in a tapered shape, and the tip of each protrusion 513B2 is formed when the valve body 5B at the time of molding is viewed from the side opposite to the Z direction. Projecting outward from the edges of the tip 312 and the cylindrical portion 32. That is, the dimension between the tips of each protrusion 513B2 is larger than the outer diameter of the tip 312 and the cylindrical part 32.
Further, as shown in FIG. 16, an inclined portion 513B3 that approaches the distal end portion 312 is formed in an arc shape at the end portion on the Z direction base end side in the projecting portion 513B2. The inclined portion 513B3 is a portion for making the covering portion 321 easily come into contact with the protruding portion 513B2 following the inclined portion 513B3 when the cylindrical portion 32 is reversed.

In such a valve body 5B, when the cylindrical portion 32 is inverted as described above, the surface of the covering portion 321 opposite to the surface on which the fixing portion 322 is formed comes into contact with the protruding portion 513B2. And since the valve body 5B is formed with the flexible silicone rubber, the stress to the radial inside in the valve body 5B acts on protrusion part 513B2 by the said coating | coated part 321. FIG. For this reason, the protruding portion 513B2 located on the Y direction distal end side is pressed in the direction opposite to the Y direction, and the protruding portion 513B2 located on the Y direction proximal end side is pressed in the Y direction, so that the base portion 513B1 has a slit. Stress in the direction of closing 314 is applied. Thereby, the closed state of the slit 314 in the state where the male connector R1 is not inserted can be maintained.
Therefore, even with a connector employing such a valve body 5B, the same effects as those of the connector having the valve body 5 can be obtained.

[Third Modification of Second Embodiment]
In the valve bodies 5, 5 </ b> A, 5 </ b> B, the inverted cylindrical portion 32 exerts the stress on the connection portions 513, 513 </ b> A, 513 </ b> B, thereby maintaining the closed state of the slit 314. However, the application position of the stress is not limited to the connection portion. For example, the stress application position may be the support portion 311 or a tip portion having an end surface 312U where the slit 314 opens.

18 and 19 are a perspective view and a cross-sectional view showing a valve body 5C before being processed as a third modification of the valve body 5, respectively. Specifically, FIG. 19 is a cross-sectional view of the connection portion 313A along the XY plane as viewed from the direction opposite to the Z direction (the front end side in the Z direction).
As shown in FIGS. 18 and 19, the valve body 5 </ b> C has the same configuration and function as the valve body 3 </ b> A except that it has a front end portion 512 instead of the front end portion 312.
The distal end portion 512 has the same short diameter as the outer diameter of the tubular portion 32 and is formed in an elliptical shape having a major axis larger than the outer diameter of the tubular portion 32, and the major axis direction of the distal end portion 512 is Along the Y direction, the minor axis direction is along the X direction. That is, each of the end portions 5121 on the distal end side and the proximal end side in the Y direction of the distal end portion 512 is more than the outer edge of the cylindrical portion 32 when the valve body 5C at the time of molding is viewed from the Z direction or the direction opposite to the Z direction. Is also located on the outside.

In such a valve body 5 </ b> C, when the cylindrical portion 32 is inverted as described above, the surface of the covering portion 321 opposite to the surface on which the fixing portion 322 is formed contacts the end portions 5121. Since the valve body 5C is formed of flexible silicone rubber, a stress toward the inside in the radial direction of the valve body 5C is applied to each end portion 5121 by the covering portion 321. Therefore, the end portion 5121 on the Y direction distal end side is pressed in the direction opposite to the Y direction, the end portion 5121 on the Y direction proximal end side is pressed in the Y direction, and the distal end portion 512 includes the distal end portion 512. A stress is applied in a direction to close the slit 314 formed at the center. Thereby, the closed state of the slit 314 in the state where the male connector R1 is not inserted can be maintained.
Therefore, the connector having the valve body 5C can achieve the same effects as the connector having the valve body 5 described above.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.
The connector according to the present embodiment has a configuration in which the above-described connector is configured to attach the valve body to the housing 2 by the attachment member 4, but the connector is attached to the housing without using the attachment member 4. 1 and different. In the following description, parts that are the same as or substantially the same as those already described are assigned the same reference numerals and description thereof is omitted.

FIG. 20 is a perspective view showing the connector 1A according to the present embodiment. FIG. 21 is a cross-sectional view of the connector 1 taken along the XZ plane when viewed from the Y direction.
The connector 1 </ b> A has a housing 2 </ b> A instead of the housing 2, and has the same configuration and function as the connector 1 except that the attachment member 4 is not provided. In addition, the level | step-difference part 324 is not formed in the flange part 323 of the valve body 3 employ | adopted for this embodiment. The same applies to the case where any of the other valve bodies described above is employed instead of the valve body 3.
As shown in FIGS. 20 and 21, the housing 2 </ b> A is formed in a substantially rectangular parallelepiped shape, and the above-described male connection portion 21 and female connection portion 22 protrude from the opposite side surfaces, respectively. . Further, the surface of the housing 2A on the base end side in the Z direction is a placement surface 23A on which the valve body 3 is placed.

As shown in FIG. 21, the mounting surface 23 </ b> A is formed with a first recess 23 </ b> A <b> 1 into which the flange portion 323 and the support portion 311 of the valve body 3 are fitted so as to be immersed in the Z direction. The first recess 23A1 is formed in a substantially circular shape when viewed from the Z direction. A hole 231 connected to the space S is formed at a substantially center of the bottom surface of the first recess 23A1.
A second recess 23A2 into which the outer peripheral portion of the support portion 311 is fitted and a third portion in which the outer peripheral portion of the flange portion 323 is fitted into the side surface (the surface intersecting the X direction and the Y direction) forming the first recess 23A1. A recess 23A3 is formed. That is, a second recess 23A2 and a third recess 23A3 are formed on the side surface in the first recess 23A1 so as to spread outward in the radial direction of the first recess 23A1, and the second recess 23A2 is formed in the third recess 23A3. On the other hand, it is located on the tip side in the Z direction. Note that the above-described rib 232 may be formed around the hole 231 on the bottom surface of the first recess 23A1.

[Effect of the third embodiment]
According to the connector 1A according to the present embodiment described above, the same effects as the connector 1 described above can be obtained, and the following effects can be obtained.
The valve body 3 is fixed to the housing 2A by being fitted into the first recess 23A1. According to this, compared with the case where the above-mentioned attachment member 4 is used, the valve body 3 can be easily fixed to the housing 2A. Therefore, the assembly process of the connector 1A can be simplified.

A second concave portion 23A2 into which a part of the outer peripheral portion of the support portion 311 of the valve body 3 is fitted is formed on the side surface of the first concave portion 23A1, and further, a flange portion is formed on the proximal side in the Z direction of the second concave portion 23A2. A third recess 23A3 into which a part of the outer peripheral portion of 323 is fitted is formed. According to this, it is possible to reliably prevent the valve body 3 from coming off from the first recess 23A1. Therefore, the valve body 3 can be stably attached to the housing 2A. In addition, by fitting the flange portion 323 into the third recess 23A3, the swing of the cylindrical portion 32 in the valve body 3, that is, the swing of the tip 312 side of the valve body 3 can be suppressed.

[Modification of Embodiment]
The best configuration for implementing the present invention has been disclosed in the above description, but the present invention is not limited to this. That is, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

In each of the above embodiments, the cylindrical portion 32 is integrally formed with the main body portion 31 so as to stand up from the end surface 312U in the direction opposite to the Z direction, and the cylindrical portion is covered so that at least a part of the main body portion 31 is covered. By reversing 32, valve bodies 3, 3A, 5, 5A to 5C attached to the housings 2 and 2A were formed. However, the present invention is not limited to this. That is, the valve body may be formed in advance in the shape after the above reversal processing (the valve body in a state of being attached to the housing).

In each of the embodiments described above, the processed cylindrical portion 32 is formed to have a size that covers almost the entire connection portion, but the present invention is not limited to this. That is, it is only necessary that at least a part of the main body is covered with the inverted cylindrical portion 32.

In each said embodiment, although the fixing | fixed part 322 which is a helical screw thread was formed in the coating | coated part 321 after inversion, this invention is not limited to this. For example, instead of the fixing portion 322, a protruding portion that engages with a locking claw that locks a medical device having a male connector with respect to the valve body, or a concave portion into which the locking claw is fitted is fixed. You may provide as. That is, as long as the medical instrument having the male connector R1 can be fixed, the shape and configuration of the fixing portion are not limited, and the fixing portion may not be provided.
In each said embodiment, although the valve body was formed with the silicone rubber, this invention is not restricted to this, You may be formed with the other material.

In the first and second embodiments, the valve bodies 3, 3A, 5, 5A to 5C are attached to the housing 2 by the attachment member 4, and in the third embodiment, the valve body 3 is attached to the housing 2A. Although it is assumed that the first recess 23A1 is formed, the present invention is not limited to this. That is, any of the aforementioned valve bodies 3A, 5, 5A to 5C may be attached to the housing 2A. Moreover, when attaching a valve body to the housing 2 using the attachment member 4, the said valve body does not need to have the level | step-difference part 324, and the press part 41 of the said attachment member 4 is good also as a structure which presses the flange part 323. . At this time, a recess is formed in the surface on the base end side in the Z direction of the flange portion 323, and a claw portion to be inserted into the recess is formed in the pressing portion 41, so that the valve body is attached to the housing while suppressing swinging. It is good also as a structure.
Further, the valve body may be fixed to the housing by a rivet or the like, and the bottom surface 311B and the mounting surface 23 may be fixed by heat fusion.

In the said 3rd Embodiment, although 2nd recessed part 23A2 and 3rd recessed part 23A3 were formed in the side surface which forms 1st recessed part 23A1, this invention is not restricted to this. That is, only one of the second recess 23A2 and the third recess 23A3 may be formed, or the second recess 23A2 and the third recess 23A3 may be omitted.
In each of the embodiments described above, the housings 2 and 2A have an overall substantially rectangular parallelepiped shape, but the present invention is not limited to this. Moreover, although the housings 2 and 2 </ b> A each have one male connection portion 21 and one female connection portion 22, the present invention is not limited to this. That is, the shape of the housing to which the valve body is attached does not matter.

In each of the above embodiments, the cylindrical portion 32 is formed in a cylindrical shape, but the present invention is not limited to this. For example, the cylindrical portion may be formed in a prismatic shape. In this case, it is good also as a structure which the corner | angular part in the inverted cylindrical part presses a main-body part, and obstruct | occludes a slit.

The present invention can be suitably applied to a valve body and a medical connector including the valve body.

DESCRIPTION OF SYMBOLS 1,1A ... Medical connector 2, 2A ... Housing 23, 23A ... Mounting surface 231 ... Hole part 232 ... Rib 23A1 ... 1st recessed part 23A2 ... 2nd recessed part 23A3 ... 3rd recessed part 3, 3A, 5, 5A, 5B 5C ... Valve 31 ... Main body 32 ... Tubular part 311 ... Support part 312,512 ... Tip 312U ... End face 313,313A, 513,513A, 513B ... Connection part 314 ... Slit 321 ... Coating part 322 ... Fixing part 323 ... Flange part 324 ... Step part 4 ... Mounting member 41 ... Pressing part 42 ... Locking part R1 ... Male connector

Claims (12)

1. A valve body connected to a male connector,
   A main body having an end face exposed to the outside, and a slit through which the male connector is inserted through the end face;
   A cylindrical part covering at least a part of the main body part is integrally formed along a direction in which the slit penetrates the main body part and along a circumferential direction with respect to the central axis of the main body part. Characteristic valve body.
2. The valve body according to claim 1,
   The valve body is formed of a flexible material,
   The cylindrical part is formed to stand up from the main body part in a direction opposite to the insertion direction of the male connector into the slit, and at least a part of the main body part is formed by inverting the inner surface and the outer surface. A valve body characterized by covering.
3. The valve body according to claim 2,
   The said cylindrical part makes the said main body part apply the stress to the direction which closes the said slit, when the said cylindrical part is reversed. The valve body characterized by the above-mentioned.
4. The valve body according to claim 3,
   The main body is
   A support having a bottom surface;
   A tip portion having a flat surface facing the support portion;
   A connecting portion that connects the support portion and the tip portion;
   The slit penetrates the tip, the connection and the support,
   The support part, the connection part and the tip part are integrally formed,
   The tubular part has a covering part that covers the tip part and at least a part of the connection part when the tubular part is inverted,
   The valve body is characterized in that the stress is applied to the connecting portion by the covering portion.
5. The valve body according to claim 1,
   The said cylindrical part has a fixing | fixed part for fixing the instrument in which the said male connector was provided in the outer surface when the said cylindrical part is reversed. The valve body characterized by the above-mentioned.
6. The valve body according to claim 1,
   A housing in which a space through which a fluid flows through the valve body is formed;
   An attachment member for attaching the valve body to the housing;
   The housing is
   A mounting surface on which the bottom surface of the valve body is mounted;
   A hole that opens in the mounting surface and communicates with the space;
   A medical connector, comprising: a rib positioned around the hole portion on the placement surface and in contact with the bottom surface.
7. The medical connector according to claim 6, wherein
   The cylindrical portion has a flange portion extending radially outward,
   The mounting member is
   A pressing portion that presses the flange portion toward the placement surface;
   A medical connector comprising: a locking portion that locks the mounting member to the housing.
8. The medical connector according to claim 7, wherein
   On the outer peripheral side of the flange portion, a step portion into which the pressing portion is fitted is formed along the circumferential direction of the flange portion,
   The said press part contact | abuts to the said level | step-difference part, and presses the said valve body toward the said mounting surface. The medical connector characterized by the above-mentioned.
9. The valve body according to claim 1,
   A housing in which a space through which fluid flows through the valve body is formed,
   The housing has a first recess into which the valve body is fitted,
   The said valve body is attached to the said housing so that the bottom face of the said valve body may contact | abut to the bottom part of the said 1st recessed part. The medical connector characterized by the above-mentioned.
10. The medical connector according to claim 9,
    A second recess is formed in a side surface of the first recess so as to be immersed in a direction orthogonal to the insertion direction of the valve body into the first recess and into which at least a part of the outer peripheral portion of the valve body is fitted. A medical connector characterized by having
11. The medical connector according to claim 9,
    The cylindrical portion has a flange portion extending radially outward,
    A medical device is characterized in that a side surface of the first concave portion is formed with a third concave portion that is immersed in a direction orthogonal to the insertion direction of the valve body into the first concave portion and into which the flange portion is fitted. Connector.
12. A manufacturing method of a valve body,
    The valve body is
    A main body having an end face exposed to the outside, opening in the end face, and a slit through which the male connector is inserted;
    A cylindrical portion that covers at least a part of the main body along the circumferential direction with respect to the central axis of the main body along the direction in which the slit penetrates the main body.
    The manufacturing method is
    The cylindrical portion and the main body portion are integrally formed so as to surround the slit at the end surface and so that the cylindrical portion rises from the end surface in a direction opposite to the insertion direction of the male connector with respect to the slit. Molded,
    The cylindrical portion is inverted so that the inner surface of the molded cylindrical portion is exposed to the outside, the outer surface of the cylindrical portion faces inward, and at least a part of the outer surface of the main body portion is covered. A method of manufacturing a valve body characterized by the above.

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