JPH1024089A - Plastic double-ended needle - Google Patents

Abstract

(57) [Problem] To stabilize the regulation of the order of removing needles in a double-ended needle applied to the connection between a container containing a solution and a container containing a drug. SOLUTION: One policy part which can be inserted into the closed mouth of the container containing the solution, another policy part which is connected to the one policy part and can be inserted into the sealed mouth of the container containing the medicine, and another policy part. And a cylindrical insertion port which is formed concentrically and can insert the sealing port of the medicine-containing container, wherein the insertion port has a sealing port of the medicine-containing container in the insertion port. A locking projection that is inserted into the other opening and inserted through the sealing opening to penetrate the concave step at the rear end of the sealing opening against the retained elasticity; And a rib piece forcibly falling down against the retained elasticity toward the inner peripheral surface of the insertion port by the peripheral side portion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dissolving a drug in a latter container and transferring a drug solution into the former container by connecting a container containing a solution and a container containing a drug in an internal communication state. About the double-ended needle.

[0002]

2. Description of the Related Art FIG. 14 shows a state of use of a conventional double-ended needle A '. A double-ended needle A' connects a container a containing a dissolving solution and a container b containing a drug such as a vitamin or an antibiotic to the inside. Are combined. Under this combined state, a predetermined drug dissolving operation in the drug-containing container b and a moving operation of the drug dissolving solution toward the dissolving solution-containing container a are performed, and after the movement of the drug dissolving solution is completed, The connection between the two containers is released.

[0003] The double-ended needle A 'conventionally provided has no means for regulating the order in which the needles are pulled out. There are cases where it remains on the container a side and cases where it remains on the medicine-containing container b side, and when it remains on the former container a side as shown in FIG. The inside could be contaminated.

[0004]

SUMMARY OF THE INVENTION The present applicant has previously provided a locking projection on a double-ended needle, and locked the locking projection on a concave step at the rear end of the mouth of the medicine-containing container. Proposal of a regulation of the needle removal sequence in which the needle withdrawal resistance of the drug-containing container side is made higher than that of the solution-containing container side so that the double-headed needle always pulls out of the solution-containing container side (for example, Japanese Utility Model No. 7-12141), and a tentative result has been achieved.

However, the double-ended needle is integrally formed of plastic, and the locking portion at the lower end of the locking projection must be provided with an angle due to the necessity of die cutting. In this case, the locking force is insufficient, and the regulation of the order of removing the needles becomes unstable, and further improvement has been desired.

The present invention has been made in view of such a demand.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a policy part which can be inserted into a sealed mouth of a container containing a solution, and a needle connected to the policy part and which can be inserted into a sealed mouth of a container containing a medicine. The other policy portion, and a substantially cylindrical insertion hole which is formed integrally and concentrically with the other policy portion and into which the sealed mouth portion of the medicine-containing container can be inserted. In a state in which the sealing port of the medicine-containing container is inserted into the insertion port and the other policy portion is inserted into the sealing port and penetrated therethrough, the sealing step is engaged with the concave step at the rear end of the sealing port against the elasticity. A locking projection for stopping, and a rib piece forcibly falling down against the retained elasticity toward the inner peripheral surface of the insertion port by the peripheral side portion of the sealing port portion are provided. Plastic double-ended needle.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.

One embodiment of the double-ended needle of the present invention is shown in FIGS.
The whole is simultaneously and integrally molded from polypropylene or the like by using, for example, injection molding means.

The double-ended needle A is a sealed port a of a container a containing a solution.
_{1 comprises} a policy portion 1 which can be inserted into the container ₁ and another policy portion 2 which is connected to the policy portion 1 and which can be inserted into the sealing opening b ₁ of the container b containing medicine. Reference numeral 2 denotes a disc-shaped or similar shape, for example, a polygonal needle holder 3 which is held in a penetrating state at the center thereof.

Of the constituent elements of the double-ended needle A, the needle portion 1
All parts except 2 are made of plastic.
May be made of plastic or metal. In the latter case, an insert molding means can be applied to simultaneously mold integrally with other plastic components.

The needle holder 3 is integrally provided with a substantially cylindrical insertion port 4 concentric with the needle portion 2 on the surface on the other policy portion 2 side.

[0013] tubular outlet 4 is for guiding the insertion of the sealing opening b ₁ of the medicated vessel b, an outer diameter and approximately equal to or slightly larger inner diameter than that of the mouth portion b ₁ has its upper 4a is divided by a plurality for example, four slits 5 of equally spaced four arcuate portions 4a _1, lower part 4b is continuous over the entire range of 360 °.

[0014] The arc-shaped portion 4a ₁ of the tubular spigot 4, the locking projection 6 of the inwardly projecting the portion of the upper end toward each are formed.

The locking projection 6, as shown in FIG. 1, the planar shape as in the central region, connecting two points on the arc with chord 6a (see FIG. 2) except for both end portions of the arc-shaped portion 4a ₁ The projecting height is the largest at the middle point of the string 6a, and the projecting height is gradually reduced toward both ends.

Since the locking projection 6 becomes an undercut portion when the inner die is pulled out, the die becomes easier to pull out as the plane area is smaller. The above-mentioned planar shape takes this point into consideration. Further, the slits 5 as mentioned upper 4a of the tubular outlet 4 above if divided into arcuate portion 4a _1, the circular arc portion 4a ₁ has to be capable of resiliently deformed outward Because
This is also one of the measures against die removal.

As shown in FIG. 1, the lower end locking portion 6b of the locking projection 6 is inclined so as to make it easier to remove the mold.

[0018] The upper 6c, for guiding the insertion of the sealing gate portion b ₁ of the medicated vessel b, can be given a slope.

[0019] On the inner peripheral surface of the cylindrical spigot 4, when fitted insertion of sealing gate portion b ₁ of the medicated vessel b to the difference plug mouth 4, the circumferential sides of the mouth portion b ₁ As a result, the rib piece 7 is pressed and deformed in the tangential direction against the possessed elasticity to be in a prone state as shown in FIG.
Is formed. As shown in FIG. 3, the rib pieces 7 are preliminarily inclined in the tangential direction (circumferential direction) in order to smoothly press and deform the rib pieces 7 in a tangential direction. FIG. 3 shows a case where the inclination is substantially 60 ° with respect to the diameter line L, but the inclination angle may be appropriately selected and determined from a range of 10 to 80 °, preferably about 45 to 70 °.

The rib piece 7 is held between the outer peripheral surface of the inner peripheral surface and the sealing opening b ₁ of the outlet 4 at the pressed and deformed thus Fuku倒state as shown in FIG. 4, between them Gap 8
Therefore, the effective projection height of the locking projection 6 is reduced accordingly. Therefore, the thickness of the rib piece 7 is
It is necessary to be smaller than the maximum protruding height of the locking protruding portion 6, and is usually not more than 1/2 of the maximum protruding height, preferably 1 /
It is set within a range of about 5１ ／.

In the present embodiment, the rib pieces 7 are formed at four locations at a lower portion 4b of the insertion port 4, that is, at a portion continuous with 360 °, for example, at 90 ° intervals. In this case, it is preferable that the position of the slit 5 is coincident with the position of the slit 5 as shown in the figure, because the inner die can be easily removed.

On the periphery of the needle holder 3 of the double-ended needle A, a steadying portion 9 is formed in order to stabilize the fitting in a support ring described below. Although the figure shows a cylindrical part as the steady rest part 9, it may have a shape that is divided into a plane arc shape.

FIGS. 5 and 6 show another embodiment of the present invention. According to this embodiment, the point where the locking projection 61 is formed at substantially the same height over the entire extension angle range and the rib piece 71 is formed so as to be located below the locking projection 61. There is no substantial difference from the embodiment of FIGS. Note that the upper end of the rib piece 71 extends to near the locking projection 71.

FIGS. 7 to 9 show one use state of the double-ended needle A according to the embodiment of the present invention shown in FIGS. As shown in FIG. 7, in order to facilitate
It is provided on the side.

[0025] For the built-in double-ended needle A, the solution containing container closure opening a ₁ of a, plastic support ring 10 is for example a closed mouth portion projecting concentrically upwardly from the mouth portion a ₁ It is fixedly attached to be removable appropriately position the screw connection 11 provided at the lower outer peripheral portion of a _1.

The double-ended needle A is installed in the support ring 10 in a fitted state. In this installed state, the double-ended needle A slides between an upper movement limit position shown in FIG. 7 and a lower movement limit position shown in FIG. It can be moved. A protective cap 12 is attached to the upper end of the support ring 10 such that the double-ended needle A is housed therein so that the protective cap 12 can be appropriately removed. In FIG. 7, reference numeral 13 denotes a concave / convex fitting portion for temporarily fixing the double-ended needle A at a predetermined position.

FIG. 8 shows a container a containing a solution through a double-ended needle A.
And a container b containing a medicine are connected to each other in an internal communication state. In this combined state, the protective cap 12 is removed from the state shown in FIG. 7, and then the sealing port b ₁ of the medicine-containing container b facing downward and the insertion port 4 of the double-ended needle A are aligned. pushing strongly sealed opening b ₁ of the container b to outlet 4, obtained by moving once the double-ended needle a to downward limit position brought to the pushing.

In the coupled state shown in FIG.
One policy part 1 penetrates and penetrates the sealed port a ₁ of the container a containing the solution, and the other policy part 2 forms the sealed port b _{1 of the} container b containing the drug.
The inside of both containers a and b is communicated via the double-ended needle A. Further, the circumferential side of said seal closed portion b ₁ In addition to the locking projection 6 provided on the outlet 4 to the recessed step b ₂ of the rear end of the sealing opening b ₁ of the medicated vessel b is engaged As shown in FIG. 3, the forcibly folded rib pieces 7 that are forced down against the holding elastic force are strongly pressed against the portion, and a frictional engagement force is generated in this portion. Needle removal resistance on the part 2 side is increased.

In the state shown in FIG. 8, a predetermined drug dissolving operation and a moving operation of the drug dissolving solution toward the dissolving solution-containing container are performed according to a conventional method, and thereafter, the connection between the two containers a and b is released.

At this time, on the medicine-containing container b side, the needle pull-out resistance is increased by the locking force of the locking projection 6 and the pressure contact of the rib pieces 7 and the frictional engagement force. As shown in (2), needle dropout occurs on the side of the container containing the lysis solution, and the needle dropout order is regulated.

In the present invention, if the rib piece 7 is formed at the lower part 4b of the cylindrical insertion port 4, that is, at a part continuous by 360 ° as shown in FIGS. Since it does not bend and deform even under pressure, the frictional engagement force of the rib piece 7 can be utilized to the maximum.

In the present invention, the steadying portion 9 of the double-ended needle
The support ring 10 and the support ring 10 may be configured to directly contact each other as shown in FIG.
As shown in FIG. 2, a longitudinally extending rib 14 formed on the outer peripheral surface of the steady rest 9 or a longitudinally extending rib 15 formed on the inner peripheral surface of the support ring 10 as shown in FIG. 13. It may be configured to touch.

[0033]

According to the present invention, the needle pull-out sequence is regulated by the function of the locking force by the locking projection and the frictional engagement force by the rib piece pressure contact. The instability that can be seen can be eliminated and the regulation of the order of needle removal can be strengthened.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a partially enlarged view showing a state of forming rib pieces.

FIG. 4 is a partially enlarged view showing the state of the rib pieces lying down.

FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention.

6 is a plan view of FIG.

FIG. 7 is a longitudinal sectional view showing a state where the double-ended needle of the present invention shown in FIGS.

FIG. 8 is a longitudinal sectional view showing a state in which two containers are connected to each other via a double-ended needle in an internal communication state.

FIG. 9 is a longitudinal sectional view showing a state where two containers are disconnected.

FIG. 10 is a longitudinal sectional view showing a modified example of a double-ended needle.

FIG. 11 is a plan view of FIG.

12 is a longitudinal sectional view showing a state where the double-ended needle shown in FIG. 10 is combined with a support ring.

FIG. 13 is a longitudinal sectional view showing a modification of the support ring.

FIG. 14 is a longitudinal sectional view showing a state where two containers are connected by applying a conventional double-ended needle.

FIG. 15 is a longitudinal sectional view showing a state where the two containers are uncoupled.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 One needle part 2 Other policy part 3 Needle holder 4 Cylindrical insertion port 5 Slit 6 Locking projection part 7 Rib piece 8 Gap 9 Steady stop part 10 Support ring 11 Screw connection part 12 Protective cap 13 Uneven fitting part 14 Vertical Extension ribs 15 Extension ribs

Claims (14)

[Claims] 1. A policy part which can be inserted into a sealed mouth of a container containing a solution, another policy part which is connected to the policy part and can be inserted into a sealed mouth of a container containing a medicine, and another policy. A substantially cylindrical insertion port which is formed concentrically with the portion and into which the sealed opening of the medicine-containing container can be inserted, and the insertion opening is provided with a medicine-containing container inside the insertion opening. In a state where the sealing opening is inserted and the other policy portion is inserted into the sealing opening and penetrated therethrough, a locking projection that locks against the retained elasticity in the concave step at the rear end of the sealing opening, A double-ended plastic needle, comprising: a rib piece forcibly falling down against the retained elasticity toward the inner peripheral surface of the insertion port by a peripheral side portion of the sealing port portion. 2. An upper portion of the insertion port is divided into a plurality of planar arc-shaped portions by slits, and a lower portion is continuous over an entire range of 360 °. 2. The double-ended needle according to claim 1, wherein a rib piece is formed in a lower 360 ° continuous portion. 3. The double-ended needle according to claim 2, wherein the locking projection is formed so as to extend over a predetermined angle range along the arc of the planar arc-shaped portion. 4. The double-ended needle according to claim 3, wherein the projection height of the locking projection is largest at an intermediate point of the extension angle range, and gradually decreases toward both ends. 5. The projection height of the locking projection is substantially the same over the entire extension angle range.
Double-ended needle as described. 6. The double-ended needle according to claim 1, wherein a lower end locking portion of the locking projection is provided with an inclination for die cutting. 7. The double-ended needle according to claim 2, wherein the rib piece is formed in a portion continuous 360 ° below the insertion port so as to coincide with the position of the slit. 8. The rib piece is formed at a position that does not coincide with the slit, and the rib piece extends beyond the 360 ° continuous portion below the insertion port and near the locking projection. The double-ended needle according to claim 2. 9. The device according to claim 1, wherein the rib pieces are provided in a planar shape and inclined in a tangential direction.
9. The double-ended needle according to 2, 7, or 8. 10. The method according to claim 1, wherein the thickness of the rib piece is smaller than the maximum projection height of the locking projection.
The double-ended needle according to 8 or 9. 11. A closed port at an upper end of a container containing a solution,
A support ring is detachably connected and fixed so as to protrude concentrically upward from the mouth, and the double-ended needle according to any one of claims 1 to 10 is inserted into the closed mouth through the support ring. A double-ended needle-containing dissolving solution container which is slidably fitted between an upper limit position before entry and a lower limit position which can penetrate and penetrate the closed mouth. 12. The dissolving solution-containing container according to claim 11, wherein the double-ended needle has a steadying portion for preventing a swing in the support ring. 13. The structure according to claim 1, wherein the steadying portion of the double-ended needle and the support ring are in contact with each other via a vertically extending rib formed on the outer peripheral surface of the steadying portion.
3. The container containing the lysis solution according to 2. 14. The support ring according to claim 12, wherein the steady rest of the double-ended needle and the support ring are in contact with each other via a vertically extending rib formed on the inner peripheral surface of the support ring. Container with lysis solution.