JP2007244706A - Adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adapter having a safe and sure connecting structure without providing a complicated mechanism such as a projecting part or a groove in particular. <P>SOLUTION: This adapter for connecting a pipe body 10 to a tube 200 is provided with a tubular insertion body 32 formed with a flange 21a and having its right end to be inserted in the tube end portion, and an external cylinder section 22 having a fitting section 22a turnably and externally fitted around the tubular insertion body 32 so as to move in the left/right direction, allowing the internal insertion of the flange 21a and fitted to the end portion of the pipe body 10, and formed with a stopper section 22b abutting on the flange 21a in its inside. The tubular insertion body 32 which is steppedly provided with an enlarged section 33 having the outside diameter W larger than that outside diameter V, is press-fitted into the end of the tube 200 from the end portion till the enlarged section 33, so that the right end inside 22d of the external cylinder section 22 is brought into elastic contact with the tube 200 around the outer circumference of the enlarged section 33 to regulate the right-side movement of the external cylinder section 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an adapter for connecting tubes or tubes and tubular bodies such as tubular pipes that are used in the construction of blood or drug solution circuits (lines) in hemodialysis therapy or infusion / transfusion therapy, for example. It is.

A “blood circuit” used as a medical instrument in hemodialysis therapy and an “infusion / transfusion set” used in infusion / transfusion therapy are composed of a tube (tubular member) such as a tube.
Depending on the various therapies, the “blood circuit” or “infusion / transfusion set” and “other device” may be connected via a tube, or the length of the “blood circuit” or “infusion / transfusion set” may be When there is not enough, an extension tube is connected, and an adapter is provided at the connection position.

  There are various types of adapters, and one of them is a so-called “free lock adapter”. “Freelock adapter” is a male and female adapter with screw connection. After both adapters are fitted, the freelock adapter that is externally attached to the male adapter is attached to the end of the female adapter. They are connected and used in a state where they are in communication with each other by screwing.

Such a “free lock adapter” is used in a blood circuit for hemodialysis as shown in FIGS. 9 to 12, and a female adapter 10 on the dialysis puncture needle side and a male adapter 20 on the blood circuit side. have.
The male adapter 20 includes an adapter part 21 with a male luer and a free lock part 22.

  The adapter part 21 with an male luer is a part that constitutes a male luer and is formed with a tubular insert, and a flange 21a is formed at substantially the center. A tubular insertion portion 21c is formed.

The tubular insertion portion 21b extending to the left side from the flange 21a is connected to the right end of the female adapter 10 of a tubular body (tubular body) in which a flexible tube 100 made of polyvinyl chloride or rubber is connected to the extension portion 10a at the left end. The formed female luer portion 10b is inserted into the left side from the end portion. Further, a screw 10c is formed at the outer peripheral end portion of the female luer portion 10b of the female adapter 10, and a gripping wing portion 10d projects between the extended portion 10a on the left end side and the female luer portion 10b on the right end side. Has been. On the other hand, the tubular insertion portion 21c extending to the right side from the flange 21a is inserted to the right side from the end of the soft tube 200 made of vinyl chloride or rubber.
The tubular insertion portion 21b is tapered at least at the surface, and the left end thereof is inserted into the left side from the end of the female luer portion 10b so that the lateral movement of the female adapter 10 is restricted by the tapered surface. It has become.
The tubular insertion portion 21c is tapered toward the right end, and the outer diameter Y of the right end on the insertion side is equal to or smaller than the inner diameter Q of the tube 200, but the outer diameter S on the flange 21a side. Is larger than the inner diameter Q of the tube 200, and the tube 200 and the tubular insertion portion 21c are connected by press-fitting the tube 200 to the outer diameter S.

Moreover, the free lock component 22 is an outer cylinder part, and is provided in the position between the tubular insertion part 21c and the flange 21a. The inner diameter T of the free lock part 22 is formed larger than the outer diameter Y of the tubular insertion portion 21c and the outer diameter Z of the tube 200, and is rotatable with respect to the outer diameter of the tube 200 into which the tubular insertion portion 21c is press-fitted. In addition, it is extrapolated movably in the left-right direction in which the tubular insertion portion 21c extends.
Furthermore, the inner diameter X of the freelock component 22 is larger than the outer diameter F of the flange 21a, and the flange 21a can be inserted. A screw 22a is formed inside the freelock component 22, and the screw 22a and the screw 10c formed on the outer peripheral end of the female luer portion 10b of the female adapter 10 are screwed together to form a freelock. The component 22 and the female adapter 10 are fitted.
In addition, a stopper portion 22b that abuts on the right end of the inserted flange 21a and restricts further rearward movement (movement to the right side) of the flange 21a is formed on the right end inner side of the free lock component 22. That is, the diameter T of the hole 22c formed inside the right end of the freelock component 22 is smaller than the inner diameter X of the freelock component 22, and the value obtained by subtracting the diameter T of the hole 22c from the inner diameter X is the protrusion amount of the stopper portion 22b. It has become.

  And when using, as shown in FIG. 10, the tubular insertion part 21c formed in the right side from the flange 21a of the adapter part 21 with the male luer of the male adapter 20 is press-fitted into the end part of the tube 200, The male adapter 20 and the tube 200 are connected, and then, as shown in FIG. 11, the tube 100 is connected to the tubular insertion portion 21 b formed on the left side of the flange 21 a of the adapter component 21 with male luer of the male adapter 20. The female adapter 10 is inserted into the end of the female luer portion 10b and connected to restrict the left and right movement of the female adapter 10 with a tapered surface formed in the tubular insertion portion 21b. The female luer portion 10b The free lock part 22 is moved to the left side to cover the female luer part 10b so that the connection of the tubular insertion part 21b is not easily disconnected. So that the extrapolated, is screwed a screw 10c formed on the screw 22a and the female luer part 10b of the free lock part 22 and the female adapter 10 and the male adapter 20 is connected to.

In addition, as a method of connecting the female adapter and the male adapter, a plurality of protrusions provided on the rear portion of the adapter corresponding to the male adapter are replaced with a plurality of grooves formed in the adapter corresponding to the female adapter. Rotate the male adapter so that the phases match each other, insert the plurality of protrusions into the corresponding grooves at the positions where the phases match, and then rotate the male adapter further from the grooves. The thing which prevented the protrusion part from falling is disclosed (for example, refer patent document 1).
Japanese Utility Model Publication No. 59-87840

  However, according to the adapter shown in the conventional example (FIGS. 9 to 12), as shown in FIG. 12, the diameter T of the hole 22c formed inside the right end of the freelock component 22 is press-fitted by the tubular insertion portion 21c. Since it is larger than the outer diameter Za of the tube 200 after being pushed, if the screwing between the free lock part 22 and the female luer part 10b of the female adapter 10 is loosened or removed, the movement of the free lock part 22 is braked. Since there is no mechanism, the free-lock component 22 may move to the right with respect to the connected tube 200 and come off. At this time, if an excessive tensile force is applied to the tube 200 by mistake, the female luer portion 10b and the tubular insertion portion 21b may be disconnected and a medical accident may occur.

Further, according to the invention described in Patent Document 1, the plurality of protrusions provided at the rear portion of the male adapter are inserted into the plurality of grooves formed in the female adapter, and the phases of both do not match. Although it does not come off as far as possible, the connection between the male adapter and the female adapter is easily disconnected when the phase of the projection and the groove coincides with the rotation of the male adapter or the female adapter.
On the other hand, it is possible to prevent the protrusion from being removed once it is inserted into the groove, for example, by making the protrusion larger than the groove. Forming a protrusion or forming a plurality of grooves corresponding to a plurality of protrusions on a female adapter requires that the phases of the protrusion and the groove be matched when assembling both. It is complicated in production and expensive.

  Accordingly, an object of the present invention is to provide an adapter capable of obtaining a safe and reliable connection structure without providing a complicated mechanism such as a protrusion or a groove.

To achieve the above object, the invention according to claim 1 is an adapter (30) for connecting a tubular body (10) located on the left side and a soft tube (200) located on the right side,
A tubular insert (31) in which a flange (21a) is formed and a right end is press-fitted into an end of the tube (200), and a tubular insert is formed at a position between the right end of the tubular insert (31) and the flange (21a). The insertion body (31) is rotatably inserted in the lateral direction in which the tubular insertion body (31) extends, and the flange (21a) can be inserted into the end of the tubular body (10). An outer cylinder portion (22) having a fitting portion (22a) that can be fitted, and having a stopper portion (22b) that contacts the flange (21a) on the inside;
The tubular insert (31) is provided with an enlarged diameter portion (33) having an outer diameter (W) larger than the outer diameter (V) of the right end of the tubular insert (31) in a stepped manner. The tubular insert (31) is press-fitted from the right end to at least the diameter-enlarged part (33) with respect to the end part, and the right-end inner side (22d) of the outer cylinder part (22) is inserted into the diameter-enlarged part (33). It is characterized in that the right side movement of the outer cylinder part (22) is restricted by elastic contact with the outer tube (200).

  The invention according to claim 2 is characterized in that the diameter-expanded portion (33) is provided at a right end position of a flange (21a) formed in the tubular insert (31).

Furthermore, the invention according to claim 3 is an adapter (30) for connecting the tubular body (10) located on the left side and the soft tube (200) located on the right side,
A tubular insert (41) in which a flange (21a) is formed and a right end is press-fitted into an end of the tube (200), and a tubular insert is formed at a position between the right end of the tubular insert (41) and the flange (21a). The insertion body (41) is rotatably inserted in the horizontal direction in which the tubular insertion body (41) extends, and the flange (21a) can be inserted, and is attached to the end of the tubular body (10). An outer cylinder portion (22) having a fitting portion (22a) that can be fitted, and having a stopper portion (22b) that contacts the flange (21a) on the inside;
From the outer diameter (V) of the right end of the tubular insert (41), the tubular insert (41) is spaced from the right end position of the flange (21a) formed in the tubular insert (41) by a distance (L). An expanded diameter portion (43) having a larger outer diameter (W) is provided in a stepped manner, and the expanded diameter portion (43) is inserted from the right end of the tubular insert (41) to the end of the tube (200). And press-fitted to the interval (L), and the inner side (22d) of the outer cylinder portion (22) is elastically brought into contact with the tube (200) on the outer periphery of the portion having the interval (L). 22) The right side movement is restricted.

  In the invention according to claim 4, the diameter (T) of the hole (22c) provided inside the right end of the outer cylinder part (22) is a value obtained by doubling the wall thickness of the tube (200) (Z It is characterized in that it is smaller than the value obtained by adding the outer diameter (W) of the enlarged diameter portion (33, 43) to -Q).

  In the invention according to claim 5, the fitting portion of the outer cylinder portion (22) is a screw (22a) formed inside thereof, and a screw formed at an end portion of the tubular body (10). It is characterized by fitting with the pipe body (10) by screwing into (10c).

  According to a sixth aspect of the present invention, the left end of the tubular insert (31, 41) tapers in a taper shape, and its tip is inserted inward from the end of the tube (10). The movement of the pipe (10) is restricted.

  The invention described in claim 7 is characterized in that an end portion of a tube (100) different from the tube (200) is connected to the tubular body (10).

  The invention according to claim 8 is characterized in that the tube (200) constitutes a blood circuit or an infusion circuit and is used as a medical instrument.

  The invention according to claim 9 is characterized in that the whole is heat-treated for sterilization.

  Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and the best mode for carrying out the invention described later.

The adapter of the present invention includes a tubular insert having a flange formed thereon and an outer cylinder, and the tubular insert is connected to the tube by being press-fitted into a soft tube. By fitting, the outer cylinder part is connected to the tube. And, the tubular insert is provided with a stepped portion having an outer diameter larger than the outer diameter, press-fitted into the tube to the expanded portion, and the inner side of the outer cylindrical portion is elastically contacted with the tube on the outer periphery of the expanded portion. As a result, a step is generated between the elastic contact portion and the non-elastic contact portion, and the frictional resistance is increased to restrict the movement of the outer cylinder portion.
In this way, the outer cylinder part is movable in the left-right direction in which it extends relative to the tubular insert, but when the inner side of the outer cylinder part is elastically contacted with the tube on the outer periphery of the enlarged diameter part, the outer cylinder part is positioned at that position. Because it is braked so that it does not move easily, the tube and the tube made of synthetic resin, etc., can be connected safely and reliably while preventing the loosening of the fitting portion such as a screw in the connection between the outer cylinder and the tube. Can do.
In addition, as shown in the conventional example, since it is not necessary to provide a complicated mechanism such as a protrusion or a groove, the structure is simple and the cost is not particularly high.
In particular, the diameter of the hole provided inside the outer cylinder portion is made smaller than the value obtained by adding the outer diameter of the enlarged diameter portion to the value obtained by doubling the thickness of the tube, thereby expanding the inner diameter of the outer cylinder portion. It can be made to elastically contact the tube on the outer periphery of the part.

Further, the position of the enlarged diameter portion may be the right end position on the tube side of the flange formed in the tubular insert, or may be a position spaced from the right end position of the flange.
In particular, an enlarged diameter portion is provided at a position spaced from the right end position of the flange, and the tubular insert is press-fitted from the right end to the interval through the enlarged diameter portion to the tube end portion. Is elastically contacted with the tube at the outer periphery of the part, the tube covered on the part with the interval is inclined from the enlarged diameter part, and the right end of the outer cylinder part is in the inclined part. Since the inner corner portions are concentrated and elastically contacted, the position braking effect of the outer cylinder portion can be further enhanced.

In addition, the position of the flange formed in the tubular insert may be a substantially central portion (not strictly meaning the center, but the portion excluding the end portion) even at the left end of the tubular insert on the tube side. However, the left end of the tubular insert is tapered and the tip is inserted inward from the end of the tubular body, and the tubular body is formed with a tapered surface. By restricting the left and right movements, the tube body is connected to the outer tube portion in addition to being fitted to the tubular insert, so that the connection is strengthened.
Also, with regard to the connection between this tubular body and the tubular insert, the outer cylindrical portion is elastically contacted with the tube on the outer periphery of the enlarged diameter portion, or the tube on the outer periphery of the portion having the space, and is braked at that position and further on the right side. Since it is prevented from moving, it is prevented from loosening and coming off.

  In addition, by connecting the end of another tube to the tube, it is possible to connect the two tubes with an adapter via the tube.

Furthermore, the adapter of the present invention can be applied to connection of a liquid flow path such as water supply or connection of a gas flow path such as air, but as a medical instrument in which a tube is configured as a blood circuit or an infusion circuit. When used, it is effective because a medical accident due to disconnection of the connecting portion can be prevented in advance.
In addition, when the entire body is heat-treated for sterilization, such as a medical instrument, the inner side of the outer cylinder part is elastically contacted with the tube on the outer periphery of the enlarged diameter part or the tube on the outer periphery of the part with the interval. In this state, a thermal load can be applied. In this case, only the portion where the inner side of the outer cylinder part is elastically contacted is further reduced in diameter, so that the effect of braking the position of the outer cylinder part is further enhanced.

(First embodiment)
With reference to FIG. 1 thru | or FIG. 5, the adapter which concerns on 1st Embodiment of this invention is demonstrated. In addition, the same code | symbol was attached | subjected to the same part as the prior art example (FIGS. 9-12).
This adapter shows an example applied to a medical instrument, and is a female adapter 10 on the dialysis puncture needle side which is a tube located on the left side and a blood circuit or an infusion circuit for hemodialysis located on the right side. This is a male adapter 30 for connecting a soft tube 200 used in the above, and includes an adapter part 31 with a male luer and a free lock part 22. The female adapter 10 and the male adapter 30 are made of a hard member such as a synthetic resin such as polypropylene or polycarbonate.

  The adapter part 31 with an male luer is a tubular insertion body in which a portion constituting the male luer is formed with a flange 21a at a substantially center, and a tubular insertion portion having a diameter smaller than the outer diameter F of the flange 21a on the left side of the flange 21a. 21b is formed, and a tubular insertion portion 32 having a diameter smaller than the outer diameter F of the flange 21a is formed on the right side of the flange 21a. The diameters of the tubular insertion portion 21 b and the tubular insertion portion 32 may be smaller than the inner diameter X of the free lock component 22. Moreover, the aspect which is not smaller than the outer diameter F of the flange 21a may be sufficient as the diameter of the tubular insertion part 21b. In addition, the position of the flange 21a with respect to the tubular insert body composed of the tubular insert portion 21b and the tubular insert portion 32 may be between the tubular insert portion 21b and the tubular insert portion 32, and the substantially center means the middle. Absent. Moreover, the adapter part 31 with a male luer which consists of the flange 21a, the tubular insertion part 21b, and the tubular insertion part 32 may be an integral product or a separate product.

  The tubular insertion portion 21b extending to the left side from the flange 21a is inserted to the left side from the end portion of the female luer portion 10b formed at the right end of the female adapter 10 of the tubular body (tubular body). An extension 10a extending to the left is provided at the left end of the female adapter 10, and a flexible tube 100 made of polyvinyl chloride or rubber is connected to the extension 10a. Further, a screw 10c is formed on the outer peripheral end of the female luer 10b of the female adapter 10, and a gripping wing 10d is provided between the left-end extending portion 10a and the right-end female luer 10b. Has been.

  On the other hand, the tubular insertion portion 32 extending to the right side from the flange 21a is inserted to the right side from the end of the soft tube 200 made of polyvinyl chloride or rubber.

  The tubular insertion portion 21b is tapered at least at the surface, and the left end thereof is inserted into the left side from the end of the female luer portion 10b so that the lateral movement of the female adapter 10 is restricted by the tapered surface. It has become. The shape of the flow path formed in the female luer portion 10b is tapered and tapered, and the tubular insertion portion 21b inserted into the left side from the end of the female luer portion 10b is received by the tapered surface, so that the female adapter 10 You may make it regulate the movement of right and left.

The tubular insertion portion 32 is provided with an enlarged diameter portion 33 having an outer diameter W larger than the outer diameter V at the right end of the tubular insertion portion 32 in a stepped manner. That is, the tubular insertion portion 32 is a tubular tube having an outer diameter V, and a diameter-enlarged portion 33 having an outer diameter W larger than the outer diameter V is coaxially arranged at the left end via a tapered outer peripheral surface 34. It is formed in a state. And it forms so that the left end of the enlarged diameter part 33 may contact the right end of the flange 21a.
The outer diameter V of the tubular insertion portion 32 is smaller than the inner diameter Q of the tube 200 so that it can be easily inserted from the end of the tube 200. The outer diameter V of the tubular insertion portion 32 may be equal to the inner diameter Q of the tube 200 as long as it can be easily inserted from the end of the tube 200.

Further, the outer diameter W of the enlarged diameter portion 33 is a value obtained by doubling the thickness P of the tube 200 by the diameter T of the hole 22c provided inside the right end of the freelock component 22 (from the outer diameter Z of the tube 200 to the inner diameter). It is set to a value smaller than a value Zb obtained by adding the outer diameter W of the enlarged diameter portion 33 to the value obtained by subtracting Q.
And the adapter part 31 with a male luer and the tube 200 are connected by press-fitting the tube 200 from the right end of the tubular insertion part 32 to the enlarged diameter part 33.

Moreover, the free lock component 22 is an outer cylinder part, and is provided in the position between the tubular insertion part 32 and the flange 21a. The inner diameter T of the free lock part 22 is formed larger than the outer diameter V of the tubular insertion portion 32 and the outer diameter Z of the tube 200, and is rotatable with respect to the outer diameter of the tube 200 into which the tubular insertion portion 32 is press-fitted. And it is inserted in the left-right direction which the tubular insertion part 32 extends so that it can move freely.
Furthermore, the inner diameter X of the freelock component 22 is larger than the outer diameter F of the flange 21a, and the flange 21a can be inserted. Then, a screw 22a is formed inside the freelock component 22, and the screw 22a and the screw 10c formed on the outer peripheral end of the female luer portion 10b of the female adapter 10 are screwed together to form a freelock. The component 22 and the female adapter 10 are fitted.
In addition, a stopper portion 22b that abuts on the right end of the inserted flange 21a and restricts further rearward movement (movement to the right side) of the flange 21a is formed on the inner side of the free lock part 22 at the right end. That is, the diameter T of the hole 22c formed inside the right end of the freelock component 22 is smaller than the inner diameter X of the freelock component 22, and the value obtained by subtracting the diameter T of the hole 22c from the inner diameter X is the protrusion amount of the stopper portion 22b. It has become. The position of the stopper portion 22b is not limited to this position, as long as the stopper portion 22b is provided on the inner side of the freelock component 22 and is in contact with the flange 21a to restrict further rearward movement (rightward movement). Good.

  And in order to manufacture this adapter, the tubular insertion part 32 formed in the right side from the flange 21a of the adapter part 31 with a male luer of the male adapter 30 is used for the tube 200 from the right end of the tubular insertion part 32 to the enlarged diameter part 33. The male adapter 30 and the tube 200 are connected by press-fitting into the end. Thereby, as shown in FIG. 5, the tube 200 is placed on and connected to the outer periphery of the enlarged diameter portion 33. Further, the tube 200 may be connected to the tubular insertion portion 32 via an adhesive. At this time, the left end of the tube 200 may be in contact with the right end of the flange 21a as shown in FIG.

  Next, the open end side located on the right side of the tube 200 is inserted from the left side of the freelock component 22. The tube 200 may be passed through the free lock component 22 in advance, and the tubular insertion portion 32 of the adapter component 31 with male luer may be press-fitted from the right end to the enlarged diameter portion 33 at the left end of the tube 200.

  And as shown in FIG. 2, until the stopper part 22b formed in the right end inner side of the free lock part 22 contact | abuts the right end of the flange 21a of the adapter part 31 with a male luer, it is a free lock part with respect to the adapter part 31 with a male luer. Move 22 to the left.

At this time, the diameter T of the hole 22c provided inside the right end of the freelock component 22 is expanded to a value obtained by doubling the thickness P of the tube 200 (a value obtained by subtracting the inner diameter Q from the outer diameter Z of the tube 200). Since the outer diameter W of the diameter portion 33 is set to be smaller than the added value Zb, as shown in FIG. 4, a hole 22c formed with a stopper portion 22b on the right end inner side, that is, on the side surface of the freelock component 22. The inner peripheral surface 22d of the tube is elastically contacted with the outer surface of the tube 200 that covers the outer periphery of the enlarged diameter portion 33. As a result, a stress load is applied to the portion of the tube 200 covered with the enlarged diameter portion 33 where the inner peripheral surface 22d inside the right end of the free lock part 22 is elastically contacted, and the outer surface is recessed inwardly. A step D is formed between the inner peripheral surface 22d on the right end of the lock part 22 and the portion of the tube 200 covered with the enlarged diameter portion 33 where the inner peripheral surface 22d does not elastically contact.
Due to the level difference D thus generated, the freelock component 22 is braked at that position so as not to move backward to the right. By the action of the step D, the free lock part 22 is prevented from easily retracting to the right side from the braking position due to the normal force acting, but when the user applies excessive force against the frictional resistance, It can be forcibly moved to the right side from the braking position, and can be rotated at the braking position.

Thereafter, the male adapter 30 connected to the tube 200 is subjected to a sterilization process in a state where the position of the free lock part 22 is braked. The sterilization process includes methods such as steam sterilization and gas sterilization. In the sterilization process, the adapter is exposed in an atmosphere of about 60 to 130 ° C. (degrees) for about 20 minutes to about 12 hours.
According to the sterilization process, since the inner peripheral surface 22d on the inner right end of the freelock component 22 is elastically contacted with the outer surface of the tube 200 covered by the enlarged diameter portion 33, a thermal load is applied. Only the portion where 22d elastically contacts is further reduced in diameter.
According to this, the position braking effect of the free lock component 22 can be obtained more strongly.

  When the male adapter 30 to which the tube 200 is thus connected is connected to the female adapter 10, as shown in FIG. 3, the male adapter 30 is formed on the left side of the flange 21 a of the adapter part 31 with male luer. The tubular insertion portion 21b is inserted into the end portion of the female luer portion 10b of the female adapter 10 to which the tube 100 is connected, and the lateral movement of the female adapter 10 is restricted by the tapered surface formed in the tubular insertion portion 21b. The female adapter is formed by screwing the screw 22a of the free lock part 22 and the screw 10c formed on the female luer part 10b so that the female luer part 10b and the tubular insertion part 21b are not easily disconnected. 10 and the male adapter 30 are connected. At this time, the free lock part 22 is extrapolated so as to cover the female luer part 10b. The screw 22a of the free lock part 22 and the screw 10c of the female luer part 10b may be rotated by rotating the free lock part 22 side or the female luer part 10b side. Further, the free lock part 22 is moved to the position removed from the braking position to the right side, and after the female luer part 10b and the tubular insertion part 21b are connected, the free lock part 22 is moved from the right side to the braking position at the same time. The free lock part 22 may be rotated so that the screw 22a of the free lock part 22 is screwed into the screw 10c of the female luer part 10b.

  According to the male adapter 30 configured as described above, a position braking effect can be obtained with respect to the free lock part 22 of the male adapter 30, so that the free lock part 22 and the female luer portion 10b of the female adapter 10 are screwed together. Therefore, the free lock part 22 does not easily move to the right side from the braking position, and a medical accident can be prevented in advance.

(Second Embodiment)
Next, with reference to FIG.6 and FIG.7, the adapter which concerns on 2nd Embodiment of this invention is demonstrated.
Similar to the male adapter 30 of the first embodiment, this adapter is a male adapter 40 that connects the female adapter 10 and the soft tube 200, and includes an adapter part 41 with a male luer and a free lock part 22. The male adapter 40 of the second embodiment is different from the male adapter 30 of the first embodiment in the shape of the tubular insertion portion 42 configured on the right side of the flange 21a of the adapter part 41 with the male luer. Since others are the same as that of 1st Embodiment, description is abbreviate | omitted.

  That is, in the first embodiment, in the tubular insertion portion 32, the enlarged diameter portion 33 is provided at the right end position of the flange 21a. In the second embodiment, in the tubular insertion portion 42, the enlarged diameter portion 43 is flanged. It is provided in steps with a distance L from the right end position of 21a. Therefore, the outer diameter W of the enlarged diameter portion 43 is larger than the outer diameter V of the right end and the left end of the tubular insertion portion 42. Tapered outer peripheral surfaces 44 and 45 are provided on the right and left sides of the enlarged diameter portion 43.

  Then, as shown in FIG. 7, the tubular insertion portion 42 is press-fitted from the right end of the tube 200 to the right end or near the right end of the flange 21a through the enlarged diameter portion 43, and then shown in FIG. As described above, the inner peripheral surface 22d of the hole 22c formed inside the right end of the freelock component 22 is positioned at a portion having a distance L, and is elastically brought into contact with the tube 200 placed on the portion of the freelock component 22. The right side movement is restricted by braking the position.

  According to this, the tube 200 covered in the part which took the space | interval L from the flange 21a inclines from the enlarged diameter part 43, and the inner peripheral surface 22d inside the right end of the freelock component 22 is inclined to the inclined part. Since the corner portions 22e are concentrated and elastically contacted so that the outer surface of the tube 200 is recessed inward, a higher position braking effect of the free lock portion 22 is obtained.

(Third embodiment)
Next, an adapter according to a third embodiment of the present invention will be described with reference to FIG.
Similar to the male adapter 30 of the first embodiment, this adapter is a male adapter 50 that connects the female adapter 10 and the soft tube 200, and includes an adapter part 51 with a male luer and a free lock part 22. The male adapter 50 according to the third embodiment is different from the first embodiment in that a tubular insertion part like the tubular insertion part 21b according to the first embodiment is not provided on the left side of the flange 21a of the adapter part 51 with the male luer. This is different from the male adapter 20. Since others are the same as those of the first embodiment, description thereof is omitted.

That is, in the third embodiment, the male luer adapter 50 and the female adapter 10 are not provided in the male luer adapter part 51 with the male luer 50 and the female adapter 10. Are connected only by screwing the screw 22a of the free lock part 22 and the screw 10c formed on the female luer part 10b.
In this case, the screw 22a of the freelock component 22 and the screw 10c of the female luer portion 10b and the elastic contact between the tube 200 and the freelock component 22 are sufficiently sealed to provide liquid. There are no leaks.

In the first to third embodiments, the example in which the adapter 30, 40, 50 is applied to a medical instrument has been shown. However, the use and size are not limited to this, and for example, water supply, etc. The present invention can be applied to connection of a liquid channel and connection of a gas channel such as air.
Moreover, although the free lock part 22 and the female luer part 10b were fitted by screwing using a screw, the method is not limited as long as the free lock part 22 and the female luer part 10b are fitted. For example, you may have a mechanism which has an uneven | corrugated | grooved part and both fits by one-touch.

It is sectional drawing which decomposes | disassembles and shows the adapter which concerns on 1st Embodiment of this invention. It is a fragmentary sectional view which shows the connection process of the adapter shown in FIG. It is a fragmentary sectional view which shows the connection state of the adapter shown in FIG. It is an expanded sectional view which shows the B section of FIG. It is sectional drawing which shows the state which press-fitted tubular insertion of the adapter which concerns on 1st Embodiment of this invention to the tube. It is sectional drawing which shows the principal part of the adapter which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the state which press-fitted tubular insertion of the adapter which concerns on 2nd Embodiment of this invention to the tube. It is sectional drawing which shows the connection state of the adapter which concerns on 3rd Embodiment of this invention. It is sectional drawing which decomposes | disassembles and shows the adapter which concerns on a prior art example. It is a fragmentary sectional view which shows the connection process of the adapter shown in FIG. It is a fragmentary sectional view which shows the connection state of the adapter shown in FIG. It is an expanded sectional view which shows the A section of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Female adapter 10a Extension part 10b Female luer part 10c Screw 10d Wing part 20 Male adapter 21 Adapter part with male luer 21a Flange 21b Tubular insertion part located in the left side 21c Tubular insertion part located in the right side 22 Free lock part 22a Screw 22b Stopper 22c Hole 22d Inner peripheral surface 22e Corner 30 Male adapter 31 Adapter part with male luer 32 Tubular insertion part 33 Diameter expansion part 34 Outer peripheral surface 40 Male adapter 41 Adapter part with male luer 42 Tubular insertion part 43 Widening part 44 Outer circumference Surface 45 Outer surface 50 Male adapter 51 Adapter part with male luer 100 Tube 200 Tube D Step

Claims (9)

An adapter that connects a tubular body located on the left side and a soft tube located on the right side,
A tubular insert in which a flange is formed and a right end is press-fitted into an end of the tube;
At the position between the right end of the tubular insert and the flange, it is extrapolated to the tubular insert so as to be rotatable and movable in the left-right direction in which the tubular insert extends, and the flange can be inserted into the end of the tubular body. An outer cylinder portion having a fitting portion that can be fitted to the portion and having a stopper portion that contacts the flange on the inside,
The tubular insert is provided with a stepped portion having an outer diameter larger than the outer diameter of the right end of the tubular insert, and the tubular insert is provided at least from the right end to the end of the tube. The adapter is characterized in that the right-side movement of the outer cylinder portion is restricted by press-fitting until the outer cylinder portion is elastically brought into contact with the tube on the outer periphery of the enlarged diameter portion.   The adapter according to claim 1, wherein the enlarged diameter portion is provided at a right end position of a flange formed in the tubular insert. An adapter that connects a tubular body located on the left side and a soft tube located on the right side,
A tubular insert in which a flange is formed and a right end is press-fitted into an end of the tube;
At the position between the right end of the tubular insert and the flange, it is extrapolated to the tubular insert so as to be rotatable and movable in the left-right direction in which the tubular insert extends, and the flange can be inserted into the end of the tubular body. An outer cylinder portion having a fitting portion that can be fitted to the portion and having a stopper portion that contacts the flange on the inside,
The tubular insert is provided with a stepped portion having an outer diameter larger than the outer diameter of the right end of the tubular insert at a distance from the right end position of the flange formed on the tubular insert. The tubular insert is press-fitted from the right end to the interval through the enlarged diameter portion with respect to the portion, and the inner side of the outer tube portion is elastically brought into contact with the tube at the outer periphery of the spaced portion. Adapter characterized by restricting the right side movement of the part.   The diameter of the hole provided in the right end inner side of the said outer cylinder part is made smaller than the value which added the outer diameter of the said enlarged diameter part to the value which doubled the thickness of the said tube. 3. The adapter according to any one of 3.   The fitting portion of the outer cylinder portion is a screw formed inside thereof, and is fitted to the tube body by being screwed into a screw formed at an end portion of the tube body. The adapter according to any one of 1 to 4.   The left end of the tubular insert is tapered and the tip is inserted inward from the end of the tube, and the left and right movement of the tube is restricted by the tapered surface. The adapter according to any one of 1 to 5.   The adapter according to any one of claims 1 to 6, wherein an end of a tube different from the tube is connected to the tubular body.   The adapter according to any one of claims 1 to 7, wherein the tube constitutes a blood circuit or an infusion circuit, and is used as a medical instrument.   The adapter according to any one of claims 1 to 8, wherein the adapter is entirely heat-treated for sterilization.

Images