JP2013192602A - Connection adaptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection adaptor capable of also connecting a lock type lure part to a receiving side liquid instrument for connecting a slip type lure part.SOLUTION: The connection adaptor has a lid member 30 for openably and closably covering the lure part insertion side of the valve body of the receiving side liquid instrument and the male screw part 60 provided to the lid member 30. This male screw part 60 is cooperated with the female screw 72c of a connection side liquid instrument to lock a lock type lure part 72a to the lid member 30.

Description

  The present invention relates to a connection adapter attached to a liquid container such as a medical container, an infusion pipe, or the like, for example, a medical bag, a medical bottle, or a medical bottle in which an infusion solution or a chemical solution is enclosed. The present invention relates to a connection adapter that enables a lock-type luer part to be connected to a liquid instrument for connecting parts.

For example, when connecting the luer part at the tip of a syringe or the like to a mixed injection tube or the like used for medical infusion routes such as infusion or artificial dialysis, a slip type (plug-in type) and a lock type are used as the connection method. There is. Similarly, there are a slip type and a lock type in the luer part at the end of the infusion extension tube or the like.
The slip type is a connection method in which the lure part is simply inserted into the valve body provided in the mixed injection port of the mixed injection pipe, etc., and there is a merit in the emergency medical field because it can be quickly connected, but a connection method that depends only on friction Therefore, there is a problem that the insertion connecting portion is easily detached by an external force. On the other hand, the lock type is a connection method in which the luer part is fixed to the mixed injection port etc. with screws or uneven engagement, and it takes a little work to connect, but it is easy because it is a mechanical connection structure in addition to friction force It will not come off.

As described above, since there are two connection methods for the luer part such as the syringe and the extension tube, there are a slip type and a lock type in the mixed injection tube or the like to which the syringe or the extension tube is connected. This also applies to straight pipes, Y-shaped pipes, cross connectors, spike pipes, stopcocks, rotators and the like connected to medical containers and infusion pipes other than mixed injection pipes. Hereinafter, the mixed injection pipes and the like will be collectively referred to as “receiver-side liquid instruments”, and the syringes and extension pipes will be collectively referred to as “connection-side liquid instruments”.
Recently, there has been a tendency to increase the number of connection-side and receiving-side liquid appliances that employ lock-type lures, but there are still a considerable number of connection-side and receiving-side liquid devices that employ slip-type lures. The actual situation is that the method is mixedly used in the medical field.

  For this reason, for example, when trying to connect a slip type luer part, the other party mixed injection pipe etc. is a lock type, or when trying to connect a lock type lure part, the other party mixed injection pipe etc. is a slip type. Often happened, and connection work was often delayed. Then, the common syringe which can respond | correspond to both slip type | molds, such as a mixed injection tube, and a lock | rock type | mold like the medical syringe of patent document 1, for example is proposed. However, it has not yet been realized that the receiving-side liquid device such as a mixed injection tube is compatible with both the slip-type and the lock-type of the connection-side liquid device.

JP 2009-297544 A

  This invention is made | formed in view of the said situation, and it aims at providing the adapter for a connection which makes it possible to connect the lock | rock type connection side liquid instrument to the slip type receiver side liquid instrument.

  The invention according to claim 1 is a connection adapter for connecting a luer part provided with a connection part for locking a connection-side liquid instrument to a valve body of a reception-side liquid instrument, the adapter comprising the valve A connection adapter comprising: a lid member that covers the lure part insertion side of the body so as to be openable and closable; and a lock connection receiving part that is provided on the lid member and cooperates with the lock connection part of the luer part. is there.

  Therefore, when the lid member of the connection adapter attached to the infusion tube is closed, the lock-type luer part of the connection-side liquid instrument can be connected to the valve body of the receiver-side liquid instrument via the lid member. If the lid member is opened, the slip-type luer part of the connection-side liquid device can be directly connected to the valve body of the reception-side liquid device.

  According to a second aspect of the present invention, in the first aspect of the present invention, a guide tube portion capable of inserting and connecting the luer portion is provided outside the lid member, and the locking connection receiving portion is provided on the outer periphery of the guide tube portion. The male screw portion is provided.

  The lock type luer part is usually provided with a cylinder part with a female thread part that becomes a locking connection part around the luer part, and the luer part is connected to the male thread part by connecting the female thread part to the male thread part. Locked to the part. In addition, since there exists a connection part for a lock | rock other than the above screw connection structures, the connection reception part for a lock | rock is not limited to an external thread part in this invention.

  According to a third aspect of the present invention, in the invention of the second aspect, the sleeve body movably provided in the guide tube portion is pressed by a tip of a luer portion inserted and connected to the guide tube portion, whereby the valve The body is pushed open by the sleeve body.

  According to a fourth aspect of the present invention, in the third aspect of the invention, an elastic flange portion is formed on the outer periphery of the sleeve body, and the flange portion is sandwiched and fixed between the lid member and the receiving liquid instrument. It is characterized by doing so. Accordingly, after the valve body is pushed open by the sleeve body, the sleeve body can be reliably moved back by the flange portion and the valve body can be reliably closed.

  According to a fifth aspect of the present invention, in the invention of the third aspect, an elastic flange portion is formed on the outer periphery of the sleeve body, and a notch formed in the flange portion is formed on the lower surface of the lid member. The sleeve body is locked to the lower surface of the lid member by inserting a protrusion.

  Thereby, even if the lid member is opened, the sleeve body is not easily detached from the lid member.

  According to a sixth aspect of the present invention, in the second aspect of the present invention, a luer projection is provided on the inner side of the lid member in the extending direction of the guide tube portion, and when the lid member is closed, the luer projection is The valve body is inserted and connected.

  When the lock-type luer part is connected via the connection adapter, the connection-side liquid instrument communicates with the receiving-side liquid instrument through the luer projection.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the lid member is attached to the receiving-side liquid instrument via a hinge portion.

  The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein the convex portion formed on the outer peripheral edge of the lid member is detachably engaged with the concave portion formed in the receiving liquid instrument. It is characterized by that.

  The invention according to claim 9 is characterized in that, in the invention according to any one of claims 1 to 6, the lid member and the receiving-side liquid instrument are connected by a strip.

  The invention according to claim 10 is the invention according to any one of claims 1 to 6, wherein the lid member is attached to the port via a hinge part that can be separated by breakage.

  In the connection adapter of the present invention, the luer part insertion side of the valve body of the receiving-side liquid instrument is covered with a lid member having a lock connection receiving part so that the luer part insertion side can be opened and closed. By doing so, the slip type luer part can be connected, and the lock type luer part can be connected by covering the lure part insertion side of the valve body with a lid member. In this way, since both the slip and lock type luer portions can be connected, the connection work between the two can be smoothly performed without worrying about the nonconformity of the liquid instrument on the connection side and the receiving side. .

BRIEF DESCRIPTION OF THE DRAWINGS It is a mixed injection pipe concerning 1st Embodiment of this invention, Comprising: (a) is the open state of a cover member, (b) is a perspective view which shows the closed state of a cover member. (A) and (b) are side views corresponding to Drawing 1 (a) and (b). (A) and (b) are sectional drawings corresponding to Drawing 1 (a) and (b). (A) (b) is a top view corresponding to Drawing 1 (a) (b). It is sectional drawing which expands and shows the hinge part of the mixed injection pipe | tube of FIG.2 (b). The fitting part of a cover member is shown, (a) is a bottom view of a cover member, (b) is an expanded sectional view of a fitting part. (A) (b) is sectional drawing which added the syringe to FIG. 2A (a) (b). It is a mixed injection pipe concerning a 2nd embodiment of the present invention which changed a hinge part, and (a) is a perspective view of a mixed injection port and a lid member of a separation state, and (b) is an expansion perspective view of the principal part. It is a mixed injection pipe concerning a 3rd embodiment of the present invention which changed a hinge part, (a) is a perspective view of a mixed injection port and a lid member of a separation state, and (b) is an expansion perspective view of the principal part. It is a mixed injection pipe concerning a 4th embodiment of the present invention which changed a hinge part, (a) is a perspective view of a mixed injection port in the state where a lid member was combined, and (b) is a mixed injection port in the state where a lid member was separated. FIG. It is a mixed injection pipe concerning a 5th embodiment of the present invention which changed a hinge part, (a) is a perspective view of a mixed injection port in a closed state, (b) is a side view of a mixed injection port in an open state, (c) ) Is an enlarged cross-sectional view of the hinge part (c part of (b)). It is a mixed injection pipe concerning a 6th embodiment of the present invention which changed a hinge part, (a) is a top view of a mixed injection port of an open state, (b) is the same side view, (c) is (b). It is an expanded sectional view of c section. The modification of the fitting part of a cover member is shown, (a) is a perspective view of a mixed injection port, (b) is an expanded sectional view of a fitting part. The modification of the attachment structure of a cover member is shown, (a) is a perspective view of the assembly state of an adapter and a cover member, (b) is the same top view, (c) is the same side view, (d) is (c) FIG. The modification of a handle is shown, (a) is a perspective view of a lid member and an adapter in an open state, and (b) is a perspective view of a lid member and an adapter in a closed state. The modification of a handle is shown, (a) is a perspective view of a lid member and an adapter in an open state, (b) is a perspective view of a lid member and an adapter in a closed state, (c) is a lid in a closed state It is a side view of a member and an adapter. The modification of a handle is shown, (a) is a perspective view of a lid member and an adapter in an open state, (b) is a perspective view of a lid member and an adapter in a closed state. The modification of a cover member is shown, (a) is a perspective view of a mixed injection tube, (b) is the same sectional view, (c) is a perspective view of a pushing sleeve, (d) is a mixed injection with a pushing sleeve attached. Sectional drawing of a pipe | tube, (e) is sectional drawing of the mixed injection pipe | tube of the state which connected the syringe. The modification of a pushing sleeve is shown, (a) is sectional drawing of a mixed injection pipe, (b) is a perspective view of a pushing sleeve, (c) is the C section expanded sectional view of (a). It is a top view of the adapter and cover member which show the modification of a hinge part. It is a top view of the adapter and cover member which show the modification of a hinge part. It is a top view of the adapter and cover member which show the modification of a hinge part. (A)-(c) is the perspective view, sectional drawing, and top view which show the modification which attached the adapter to other components. (A)-(c) is the perspective view, sectional drawing, and top view which show the modification which attached the adapter to other components. (A)-(c) is the perspective view, sectional drawing, and top view which show the modification which attached the adapter to other components. (A)-(c) is the perspective view, sectional drawing, and top view which show the modification which attached the adapter to other components. (A)-(c) is the perspective view, sectional drawing, and top view which show the modification which attached the adapter to other components. (A)-(c) is the perspective view, sectional drawing, and top view which show the modification which attached the adapter to other components.

  Hereinafter, first to sixth embodiments and modifications of the present invention will be described with reference to the drawings. In each of the embodiments and the modifications, components such as members and components having the same function are denoted by the same reference numerals as much as possible, and once described, the description is omitted.

  FIG. 1 shows a mixed injection tube 10 according to a first embodiment of the present invention. The mixed injection tube 10 is used when performing infusion, artificial dialysis, etc., when attaching a device such as a syringe and extracting / injecting fluid (blood, drug solution, etc.) or performing various measurements. Is not limited to medical use.

  The mixed injection tube 10 is mainly composed of a straight tube 10a, and receiving ports 10b for receiving connection tubes (not shown) are formed at both ends of the straight tube 10a. A mixed injection port 12 composed of a short cylindrical base 10c as shown in FIG. 2B is provided integrally with the straight pipe 10a on the upper surface of the straight pipe 10a in the longitudinal direction. On the outer peripheral surface of the pedestal 10c of the mixed injection port 12, an annular rib 10d that is smoothly raised in the circumferential direction is formed.

  As shown in FIG. 2B, a horizontal step portion 14 is formed inside the pedestal 10 c, and a disc-like valve body 16 is seated on the step portion 14. The valve body 16 is made of an elastic material such as synthetic rubber. The upper surface of the valve body 16 is a flat surface 16a, but the center of the lower surface is a concave surface 16b that is convex upward. One slit 18 extending in the radial direction is formed in the central portion of the concave surface 16b. A circular opening 10e communicating with the straight pipe 10a is formed at the center of the stepped portion 14, and the inside and outside of the straight pipe 10a are partitioned by a valve body 16.

A short cylindrical adapter 20 is detachably attached to the base 10c as shown in FIGS. 1 and 2A to 2C. The adapter 20 is formed as a tapered opening 20a whose lower opening is inclined outward so that the annular rib 10d of the base 10c can be smoothly received, and an annular groove 20b into which the annular rib 10d is fitted is formed on the inner peripheral surface thereof. Has been. An annular protrusion 20c that rises short is formed at the upper end of the adapter 20, and a rib 30e of an annular protrusion 30d of the lid member 30 described later is engaged with the outer periphery of the annular protrusion 20c.
An annular flange 20d extending radially inward is formed on the inner periphery of the upper end of the adapter 20, and a through hole 22 is formed at the center of the flange 20d. Further, the lower surface of the flange portion 20d is a horizontal surface that presses the upper surface of the valve body.

  As shown in an enlarged view in FIG. 3, the lid member 30 is connected to a part of the outer periphery of the adapter 20 via a thin hinge portion 40. The lid member 30 has a circular lid body 30a, a guide cylinder portion 30b projecting from the center upper surface of the lid body 30a, and a flat plate-like shape projecting radially outward at a position opposite to the hinge portion 40. A handle 50 is provided. The adapter 20 and the lid member 30 are integrally formed of a resin material including the hinge portion 40.

  The guide cylinder part 30b is for inserting a luer part of a lock type syringe, and a luer taper corresponding to the lure part of the syringe is formed on the inner peripheral surface of the guide cylinder part 30b. As shown in FIG. 5B, a male screw portion 60 that cooperates with a female screw portion 72c as a locking connection portion of the locking syringe 72 is formed on the outer periphery of the guide cylinder portion 30b.

  The lower end part of the guide cylinder part 30b continues to the lure protrusion 30c that protrudes from the lower surface of the lid body 30a in the extending direction of the guide cylinder part 30b. The luer protrusion 30c has a maximum outer diameter of the outer peripheral surface substantially equal to the outer diameter of the guide tube portion 30b, but the tip is made thinner than that to form a truncated cone shape as a whole. When the lid member 30 is rotated around the hinge portion 40 and closed, the tip of the luer projection 30c pushes open the slit 18 at the center of the valve body 16 as shown in FIG. It is designed to be liquid-tightly fitted in the central opening.

  An annular protrusion 30d that rises short as shown in FIG. 4 is formed on the lower surface on the outer peripheral side of the lid member 30, and a rib 30e formed on the inner periphery of the annular protrusion 30d is formed on the annular protrusion 20c of the adapter 20. It engages with an annular rib 20e formed on the outer periphery. The ribs 30e may be provided on the entire circumference of the lid member 30, but in that case, a slightly large force is required to engage with or remove from the annular rib 20e. Therefore, as shown in FIG. 4, the ribs 30 e may be formed with a predetermined length on the hinge portion 40 side and the opposite side of the hinge portion 40. Thus, when the lid member 30 is engaged with the adapter 20 via the rib 30e at two locations in the diameter direction of the lid member 30, the lid member 30 can be opened and closed smoothly and the lid member 30 is fixed in the closed state. The necessary and sufficient fixing force is obtained.

  When a syringe is connected to the mixed injection tube 10 configured as described above, as shown in FIG. 5 (a), the slip syringe 70 may be inserted into the valve body as in the conventional case.

  As shown in FIG. 5B, the locking syringe 72 has a cylindrical portion 72b formed around the luer portion 72a, and a female screw portion 72c serving as a locking connecting portion is formed on the inner peripheral surface of the cylindrical portion 72b. It is a structure. When connecting the lock syringe 72 to the mixed injection tube 10, first, the lid member 30 of the mixed injection tube 10 is opened, and in this state, the luer portion 72 a of the syringe 72 is inserted into the hole of the guide tube portion 30 b of the lid member 30. 32. Then, by rotating the syringe 72, the female screw portion 72 c is screwed into the male screw portion 60 of the lid member 30, and then the syringe 72 and the lid member 30 are rotated integrally around the hinge portion 40 and vertically raised. The lid member 30 is closed as shown in FIG. Thereby, the luer protrusion 30c of the lid member 30 pushes and opens the valve body 16, and the luer part 72a communicates with the mixed injection tube 10.

  Since the length of the luer part is often the same for both the slip type and the lock type in the case of a syringe having the same diameter, when the lock type syringe 72 is connected using the lid member 30, the luer part 72 a serves as the valve body 16. Not reach. Therefore, in this embodiment, the lid member 30 is provided with a luer protrusion 30c.

When the tip position of the luer projection 30c in FIG. 5B is compared with the tip position of the luer part 70a in FIG. 5A, the tip of FIG. Yes. This is because the luer protrusion 30c is made the minimum necessary length so as not to interfere with the through hole 22 on the adapter 20 side. If the luer protrusion 30c penetrates the valve body 16, the mixed injection tube 10 and the syringe 72 are sufficiently communicated with each other, so that it is not necessary to make the luer protrusion 30c longer.
In addition, the plunger of each syringe 70 and 72 is abbreviate | omitted in FIG.

  As mentioned above, although 1st Embodiment of this invention was described, the mixed injection pipe 10 of this invention can change the form of the hinge part 40 variously. FIG. 6 relates to the second embodiment, in which a pair of left and right bosses 30l provided on the lid member 30 are fitted and attached to the boss holes 20h of the bracket 20g on the adapter 20 side.

  FIG. 7 relates to the third embodiment, in which an engagement portion 30f having a U-shaped cross section provided on the lid member 30 is attached by snap fitting to a shaft portion 20i provided on the adapter 20 side. It is.

  FIG. 8 relates to the fourth embodiment, in which the lid member 30 and the mixed injection port 12 are connected by a flexible strip 42. One annular portion 42 a of the strip 42 is sandwiched between the base 10 c of the mixed injection tube 10 and the adapter 20, and the other annular portion 42 b is fitted on the outer periphery of the lid member 30 to connect them.

  FIG. 9 relates to the fifth embodiment, in which the boss 30h of the protruding piece 30g with the hinge portion 40a provided on the lid member 30 is fitted into the boss hole 20k of the horizontal flange portion 20j on the adapter 20 side. It is. In the fifth embodiment, since the lid member 30 can be swung not only in the vertical direction but also in the horizontal direction, the direction of the lid member 30 in the open state can be freely changed in the vertical and horizontal directions. Therefore, the lid member 30 can be easily moved to an unobstructed position when the slip syringe 70 is inserted into the mixed injection port 12. Further, when the lock syringe 72 is used, the lid member 30 can be easily directed in the direction in which the luer part 72a of the syringe 72 can be easily inserted, so that the connection work is easy.

  FIG. 10 relates to the sixth embodiment, and the lid member 30 is attached by fitting the boss 30j provided on the protruding piece 30i of the lid member 30 into the boss hole 20k provided in the horizontal flange portion 20j on the adapter 20 side. It is what I did. In this embodiment, as shown in FIG. 10A, the lid member 30 is swung in the horizontal direction and moved to above the adapter 20. In this embodiment, the lure part of the syringe is adapted to a type longer than the standard, and the longer luer part of the syringe is directly inserted and connected to the valve body 16 without providing the luer protrusion 30c on the lid member 30. To do.

  However, if the projection 30i of the lid member 30 is flexible by molding the lid member 30 with a soft resin or the like, the lid member 30 is slightly lifted even if the lure projection 30c is provided on the lid member 30. Since it can turn in a state, the lid member 30 can be moved above the adapter 20 without interfering with the adapter 20.

  FIG. 11 shows a modified example of the fitting portion between the adapter 20 and the lid member 30. A flap 44 with a swingable hinge 44 a is provided on the opposite side of the hinge portion 40 of the lid member 30. The upward projecting portion 44b formed in the above is engaged with the downward recessed portion 20l on the adapter 20 side to lock the lid member 30 in the closed state. In this modification, since the flap 44 with the hinge 44a is used, the lid member 30 can be fixed easily, and the lid member can be secured by engaging the upward protrusion 44b of the flap 44 with the downward recess 20l on the adapter 20 side. The fixing force of 30 increases.

  In FIG. 12, the lid member 30 and the adapter 20 are attached by a plurality (three in the illustrated example) of concave / convex engagement (convex portions 46a and concave portions 47a) formed on the outer peripheral portions of both. 30 can be completely removed from the co-injection port 12, so that when using a slip-type syringe exclusively, the lid member 30 does not get in the way and is convenient. The convex portions 46 a are formed on the projecting piece portions 46 that are formed at three locations on the outer peripheral portion of the lid member 30 so as to protrude at equal intervals in the circumferential direction. Specifically, a convex portion 46a is formed on the upper surface on one end side in the circumferential direction of the protruding piece portion 46, and a stopper portion 46b is formed on the upper surface on the opposite side. On the adapter 20 side, arcuate engagement portions 47 are provided at three locations in the circumferential direction. The engaging portion 47 has an L-shaped cross section, has an opening 47b at one end, and an end wall 47c at the other end. A recess 47 a is formed in the ceiling surface at the back of the engaging portion 47.

  In the embodiment of FIG. 12, the lid member 30 is attached to the luer part 72a of the lockable syringe 72 of FIG. This mounting is performed by screwing the male screw part 60 of the lid member 30 into the female screw part 72c of the luer part 72a. Next, the three projecting pieces 46 of the lid member 30 are placed on the annular flat surface 20p of the adapter 20 as shown in FIG. At this time, the luer protrusion 30c of the lid member 30 pushes and opens the valve body 16 as in FIG. 5B, so that the inside of the mixed injection tube 10 and the syringe 72 are communicated. Then, when the lid member 30 is rotated in the arrow direction in this state, the convex portion 46a enters the inside from the opening portion 47b of the engaging portion 47, and the stopper portion 46b of the lid member 30 contacts the edge of the opening portion 47b. At the stage, the convex portion 46 a fits into the concave portion 47 a of the engaging portion 47. Therefore, in this state, the lid member 30 does not rotate freely in the direction opposite to the arrow direction and does not come off the adapter 20. When removing the lid member 30 from the adapter 20, the lid member 30 may be rotated in the direction opposite to the arrow direction.

  FIG. 13 shows a modification of the handle of the lid member 30, and a pair of handle portions 52 are provided on the left and right sides of the lid member 30. Since the handle portion 52 can be operated from both sides of the lid member 30, there is an advantage that the operation is easy.

  In FIG. 14, a flange-shaped handle portion 54 is formed on the entire circumference of the lid member 30. The lid member 30 can be opened and closed by placing the hand on the handle 54 at an arbitrary position on the entire circumference of the lid member 30, and the projections are reduced around the lid member 30, so that the tubes and cords are caught. There is an advantage that there is less fear.

  In FIG. 15, the handle 20 is not projected from the lid member 30, but a recess 20 n is formed on the adapter 20 side so that the lid 30 can be opened by placing a hand on the end 30 k of the lid member 30. . Since there are few protrusions around the lid member 30, there is an advantage that there is little possibility that the tubes and cords will be caught.

  In FIG. 16, the luer protrusion 30 c is removed from the lid member 30, and a pushing sleeve 34 as a sleeve body is arranged separately instead. As shown in FIGS. 16 (a) to 16 (b), when the lid member 30 is accidentally closed while the locking syringe 74 is not connected to the male threaded portion 60 of the lid member 30, the luer protrusion 30c becomes the valve body. It is possible to prevent the blood or the like from leaking to the outside by pushing the slit 18 at the center of the 16 open.

  As shown in FIG. 16C, the pushing sleeve 34 is formed by integrally forming a thin circular flange 34b on the outer periphery of a short rubber sleeve body 34a. 16D, the upper half of the pushing sleeve 34 is inserted into the hole 32 of the guide cylinder portion 30b of the lid member 30, and the outer peripheral portion of the flange portion 34b is connected to the lower surface of the lid member 30 and the adapter 20. It fixes by pinching between annular projections 20c. In this state, the chamfered lower end portion of the sleeve main body 34a is merely in light contact with the upper surface of the valve body 16, and the slit 18 of the valve body 16 remains closed.

  From the state of FIG. 16D, as shown in FIG. 16E, the luer part 74a of the locking syringe 74 is inserted into the upper end of the hole 32 of the guide cylinder part 30b of the lid member 30, and the syringe 74 is rotated. The female screw portion 74c is screwed into the male screw portion 60 of the guide tube portion 30b. As a result, the tip of the luer portion 74a comes into contact with the upper end portion of the sleeve body 34a, and the hole of the luer portion 74a and the hole 34c of the sleeve body 34a communicate with each other.

  At the same time, the sleeve body 34a moves downward while elastically extending the flange portion 34b in the radial direction by the pressing force of the luer portion 74a, thereby the slit 18 of the valve body 16 is pushed open, and the lure portion is interposed via the sleeve body 34a. 74 a communicates with the mixed injection tube 10. When the locking syringe 74 is removed from the lid member 30, the sleeve main body 34a returns to the original position by the tension of the flange portion 34b and the self-restoring force of the valve body 16 itself as shown in FIG. close up.

  If a stepped portion or the like is formed in the guide tube portion 30b so that the sleeve body 34a does not protrude outward and does not fall into the mixed injection tube 10 beyond the slit 18 of the valve body 16, the flange portion 34b It is not always necessary. When the flange portion 34b is omitted, the sleeve body 34a is returned to the original position only by the self-restoring force of the valve body 16 itself.

  FIG. 17 shows a modification of the pushing sleeve 34. In this modified example, as shown in FIGS. 17A to 17C, the flange 34b is slightly thickened to form a pair of left and right arc-shaped notches 34d, and the arcuate shape is formed on the lower surface of the lid member 30. Corresponding to the notch 34d, a pair of left and right engaging projections 30m are integrally formed in the same arc shape. Others are the same as the pushing sleeve 34 of FIG. The reason why the flange portion 34b is slightly thick is that the locking projection 30m is difficult to come off and the notch portion 34d is not easily broken.

  In FIG. 16, the outer peripheral portion of the flange portion 34 b of the pushing sleeve 34 is sandwiched and fixed between the lower surface of the lid member 30 and the annular protrusion 20 c of the adapter 20, but now the pushing sleeve is opened as soon as the lid member 30 is opened. 34 may fall off the lid member 30. Therefore, as shown in FIGS. 17A and 17C, the pushing sleeve 34 is inserted into the arc-shaped cutout portion 34d of the flange portion 34b of the pushing sleeve 34 by inserting the L-shaped locking projection 30m of the lid member 30 into the pushing sleeve. 34 is locked to the lower surface of the lid member 30.

  In FIG. 17, since the flange portion 34b is slightly thicker, the outer diameter of the flange portion 34b is slightly smaller than that of FIG. 16 so that the outer periphery of the flange portion 34b is not sandwiched between the lower surface of the lid member 30 and the annular protrusion 20c of the adapter 20. I have to. Accordingly, in FIG. 17, the flange portion 34b of the pushing sleeve 34 is supported by the locking projection 30m even when the pushing sleeve body 34a is pushed down by the luer portion 74a of the syringe 74 as shown in FIG. 16 (e).

  Thereby, even if the lid member 30 is opened, the pushing sleeve 34 is not easily detached from the lid member 30. Since the flange portion 34b is elastic, if the lid member 30 is opened and the tip of the push-in sleeve 34 is lightly pulled outward, the arc-shaped cutout portion 34d expands and the locking projection 30m is easily removed. Even when the sleeve 34 is cleaned, it can be easily removed. In the case of a usage method in which the pushing sleeve 34 does not need to be removed, the pushing sleeve 34 may be fixed to the lower surface of the lid member 30 with an adhesive or the like.

  In FIG. 18, the lid member 30 is connected to the adapter 20 by a plate-shaped plastic hinge 36 with a perforation 36a that can be broken and separated. Since the perforation 36a is contained, when the lid member 30 is contaminated with blood or the like, the lid member 30 can be easily separated from the adapter 20 and discarded.

  In FIG. 19, the lid member 30 is connected to the adapter 20 by a plate-shaped plastic hinge 38 with a V-shaped cut 38a. Since the cuts 38a are formed at both ends in the width direction of the hinge 38, the cuts 38a can be easily broken and separated. When the cover member 30 is contaminated with blood or the like, the cover member 30 is easily separated from the adapter 20. Can be discarded.

  In FIG. 20, the hinge portion 40 between the adapter 20 and the lid member 30 is configured not by a strap but by a thin portion 40a. When the lid member 30 is contaminated with blood or the like, the lid member 30 is strongly pulled. The thin portion 40a can be broken and separated from the adapter 20.

  FIGS. 21A to 21C are examples in which the adapter 20 can be attached to components other than the mixed injection tube 10, and can be connected to the end of the tube body 24. An annular rib 24d is formed at the end of the tube body 24, and the adapter 20 is attached to the annular rib 24d. Further, a step portion 25 is formed on the inner surface of the end portion of the tube body 24, and the valve body 16 is fitted therein.

  FIGS. 22 to 26 are also examples in which the adapter 20 can be attached to parts other than the mixed injection tube 10. FIG. 22 can be attached to the end of the Y-shaped tube 26, and FIG. 24 is attached to the end of the spike tube 28, FIG. 25 is attached to the end of the stopcock 29, and FIG. 26 is attached to the end of the rotator 31. It can be attached.

  Although the embodiments and modifications of the present invention have been described above, the present invention is not limited to the above-described embodiments and modifications, and various modifications are possible within the scope of the technical idea described in the claims. It is.

DESCRIPTION OF SYMBOLS 10 Mixed injection pipe 12 Mixed injection port 16 Valve body 18 Slit 20 Adapter 22 Through-hole 30 Lid member 30a Lid main body 30b Guide cylinder part 30c Luer protrusion 50 Handle part 60 Male thread part 70 Slip type syringe 70a Luer part 72 Lock type syringe 72a Luer Part 72b cylinder part 72c female screw part

Claims (10)

  A connection adapter for connecting a luer part having a connection part for locking a connection side liquid instrument to a valve body of a reception side liquid instrument, the adapter opening and closing a luer part insertion side of the valve body A connection adapter comprising: a cover member that freely covers; and a lock connection receiving portion that is provided on the cover member and cooperates with the lock connection portion of the luer portion.   2. A guide tube portion into which the luer portion can be inserted and connected is provided outside the lid member, and a male screw portion serving as the lock connection receiving portion is provided on the outer periphery of the guide tube portion. Adapter for connection.   The valve body is pushed open by the sleeve body by pressing a sleeve body movably provided in the guide cylinder portion with a tip of a luer portion inserted and connected to the guide cylinder portion. The connection adapter according to claim 2.   The connection adapter according to claim 3, wherein a flange portion having elasticity is formed on an outer periphery of the sleeve body, and the flange portion is sandwiched and fixed between the lid member and a receiving-side liquid instrument. .   A flange portion having elasticity is formed on the outer periphery of the sleeve body, and a locking protrusion formed on the lower surface of the lid member is inserted into a notch portion formed in the flange portion, whereby the sleeve is placed on the lower surface of the lid member. The connection adapter according to claim 3, wherein the connection adapter is locked to the connection adapter.   A luer protrusion located in the extending direction of the guide tube portion is provided inside the lid member, and the luer protrusion is inserted and connected to the valve body when the lid member is closed. The connection adapter according to claim 2.   The connection adapter according to claim 1, wherein the lid member is attached to the receiving-side liquid instrument via a hinge portion.   The connection adapter according to any one of claims 1 to 6, wherein a convex portion formed on an outer peripheral edge of the lid member is detachably engaged with a concave portion formed in the receiving-side liquid instrument.   The connection adapter according to any one of claims 1 to 6, wherein the lid member and the receiving-side liquid instrument are connected by a strip.   The connection adapter according to claim 1, wherein the lid member is attached to the port via a hinge part that can be separated by breaking.

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