JP2002204817A - Syringe needle remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a syringe noodle from jumping out to the outside of a container in a syringe needle remover. SOLUTION: The syringe needle remover in which a syringe needle drawing out means (15) is arranged in the container for housing the syringe needle (11) is provides with at least a pair of elastic pawls (21) preventing a syringe needle from jumping out on the side of the passage (10) of the syringe within the container. Each pawl has an operation part (27) above a position of the upper edge of the flange (11b) of the insertion head (11a) of the syringe needle on starting of drawing out the syringe needle and the operation parts of the pawls always project to the inside of the passage of the syringe needle. The upper surfaces of the operation parts of the pawls form slopes (29) gradually lowered in the direction towards the center of the passage of the syringe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle removal device for removing a needle from a used syringe. The “syringe” in the present specification including the claims shall include not only devices used for injection purposes but also devices used for blood collection.

[0002]

2. Description of the Related Art In recent years, in order to prevent hospital-acquired infections such as AIDS and hepatitis C, not only the syringe needle but also the syringe body is discarded once reused without re-use. "Has been performed.
Therefore, the number of syringes to be discarded is extremely large. Therefore, in order to prevent out-of-hospital infections of processing companies and the like, when disposing of used syringes, a method of removing the injection needle from the syringe body, enclosing the injection needle in a dedicated container, and discarding it is known. Has been adopted.

[0003] However, it is not only troublesome to remove the injection needle from the syringe body by hand and enclosing the injection needle in a dedicated container, but also there is a risk that the injection needle may be accidentally pierced into a finger or the like during the operation. Not at all. If a used injection needle is pierced into a finger or the like, it may cause hospital-acquired infections such as AIDS and hepatitis C.

[0004] In view of such a point, the present inventor provides a needle removal device in Japanese Patent Application Laid-Open No. Hei 8-89535. The injection needle detacher described in Japanese Patent Application Laid-Open No. 8-89535 (hereinafter simply referred to as "conventional injection needle detacher") includes a container for accommodating an injection needle provided with an injection needle withdrawing means. The extracting means is configured to extract the injection needle from the syringe body and drop the extracted injection needle into the container.

[0005] That is, the conventional needle removal device is shown in Figs.
As shown in the figure, a cap 5 is attached to an opening 3 of a container 1 for accommodating a syringe needle, and a syringe receiver 7 having a needle insertion hole 6 is slidably provided in the cap 5 in a vertical direction. The cap 5 is pivotally mounted on the cap 5 near the side of the syringe needle passage 10 below the syringe receiver 7 so as to be rotatable up and down. The rotary body 9 is provided with a needle removing means 15 for withdrawing the rotary body 9 from the syringe body 13. The rotary body 9 is always in contact with the lower end 17 of the syringe receiving portion 7. 7 is provided with a return means 19 having elasticity for returning the member 7 to its original position.

In the above-described conventional needle detacher, when removing the injection needle 11 from the used syringe, the syringe body 13 is moved downward while the end face 13a of the syringe body 13 is in contact with the syringe receiving portion 7. Pressing is performed. At this time, the syringe receiving portion 7 slides downward, and the lower end 17 thereof rotates the rotating body 9 downward against the force of the return means 19 having elasticity. Then, the injection needle removing means 15 of the rotating body 9 abuts on the flange 11b of the insertion head 11a of the injection needle 11 and rotates downward, whereby the injection needle 1 is rotated.
1 is removed from the syringe body 13 together with the insertion head 11a. The injection needle 11 detached from the syringe body 13 enters the container 1 together with the insertion head 11a. Also, after the syringe needle 11 is detached from the syringe body 13, if the syringe body 13 is separated from the syringe receiving part 7, the elastic return means 19 provided on the rotating body 9 returns the rotating body 9 to the original position. At the same time, the syringe receiver 7 is slid back to the original position. Subsequently, the injection needle is removed from the next used syringe in the same manner as described above.

[0007]

However, in the above-mentioned conventional injection needle detacher, the insertion head 11a of the injection needle 11 is caught by the injection needle extracting means 15 when the injection needle is separated due to an erroneous operation. It is possible, but very rarely, to not fall into. In such a case, the user of the needle removal device tries to drop the injection needle 11 hooked on the needle withdrawing means 15 into the container 1 and shakes the container 1 in his hand or violates the container 1. May be held in hand and collided with the edge of a desk. At this time, the rebound may cause the injection needle 11 to jump out of the container 1 through the injection needle insertion hole 6 of the syringe receiver 7. When the used injection needle jumps out of the container 1, the injection needle may pierce a person, which is extremely dangerous.

The present invention eliminates the possibility that a used injection needle in the above-mentioned conventional injection needle detacher jumps out of the container as described above, thereby ensuring the safety of the injection needle detacher. It is.

[0009]

To solve the above problems, the present invention provides the following needle remover.

(1) A container for accommodating an injection needle is provided with an injection needle extracting means, and the injection needle extracting means is adapted to extract the injection needle from the syringe body and drop the extracted injection needle into the container. In the above-mentioned syringe needle detacher, at least a pair of resilient needle pop-out preventing claws having elasticity are provided on the side of the passage of the needle in the container, and each of the needle pop-out preventing claws is used for injection at the time of starting withdrawal of the needle. It has an action portion above the upper edge of the flange of the needle insertion head, the action portion of each injection needle pop-out preventing claw always projects into the passage of the injection needle, and the action portion of each injection needle pop-out prevention claw is on the upper surface Is formed so as to be gradually lowered toward the center of the passage of the injection needle, and when the injection needle advances downward from above the working portion, the injection head is located below the flange of the insertion head. Presses the inclined surface of the action portion to push out each of the injection needle pop-out preventing claws against the elasticity thereof in a direction away from the center of the passage of the injection needle, so that the injection needle is actuated by the injection needle pop-out prevention claw. The injection needles which can pass between the injection needles and which are located below the operation portions are provided with the upper edges of the flanges of the insertion heads abutting against the lower surfaces of the operation portions of the injection needle protrusion prevention claws, so that each of the injection needle protrusion prevention claws is provided. An injection needle detacher (claim 1), wherein the injection needle is prevented from jumping upward.

(2) A cap for accommodating a syringe for accommodating an injection needle is provided in the opening of the container for accommodating the syringe needle. , A rotating body is pivotally mounted below the syringe receiving portion so as to be rotatable in the vertical direction, and the rotating body is provided with a needle removing means for removing the injection needle from the syringe body. In the injection needle detacher, the moving body is provided with elastic return means for bringing the rotating body into constant contact with the lower end of the syringe receiving section and returning the rotating body and the syringe receiving section to the original position. At least a pair of resilient needle pop-out preventing claws are provided on the side of the passage of the injection needle in the container, and each of the needle pop-out preventing claws is provided with a hook of the needle insertion head at the time of starting the removal of the needle. The operating portion of each injection needle pop-out preventing claw always projects into the passage of the injection needle, and the upper surface of the operating portion of each injection needle pop-out preventing claw has the upper surface of the injection needle passage. An inclined surface is formed so as to gradually decrease toward the center, and when the injection needle advances downward from above the working portion, the lower edge of the flange of the insertion head of the injection needle presses the inclined surface of the working portion. By doing so, each of the injection needle pop-out preventing claws is pushed and spread in a direction away from the center of the injection needle passage against its elasticity so that the injection needle can pass between the working portions of the injection needle pop-out prevention claws. The injection needle located below the working portion is prevented from projecting above each injection needle pop-out preventing claw by the upper edge of the flange of the insertion head abutting against the lower surface of the working portion of each injection needle pop-out preventing claw. What I did Needle withdrawal device according to symptoms (claim 2).

[0012]

The injection needle disengagement device according to the present invention is characterized in that the injection needle extraction means extracts the injection needle from the syringe body and drops the extracted injection needle into the container. It has the same function as that of the vessel.

The operation of the injection needle pop-out preventing claw in the injection needle detachment device according to the present invention will be described. When the user of the injection needle detacher causes the injection needle extraction means to extract the injection needle from the syringe main body, the lower edge of the flange of the insertion head of the injection needle firstly slopes the upper surface at the action portion of each injection needle pop-out preventing claw. Touch the surface. This is because the lid and the working portion always project into the passage of the injection needle. In this state, if the user of the needle release device presses the syringe body downward, the lower edge of the flange of the insertion head of the injection needle causes each of the injection needle protrusion preventing claws to be in the center of the passage of the injection needle against its elasticity. The injection needle is spread apart in the direction away from the needle so that the injection needle can pass between the working portions of the injection-needle projection preventing claw. That is,
The insertion head in the injection needle can move downward between the respective injection needle protrusion prevention claws. When the flange of the insertion head in the injection needle passes between the injection needle protrusion prevention claws,
Each injection needle pop-out preventing claw returns to its original position due to its elasticity, and the action portion of each injection needle pop-out preventing claw is again in a state of protruding into the passage of the injection needle. When the flange of the insertion head of the injection needle has passed between the respective injection needle protrusion prevention claws, in other words, when the insertion needle of the injection needle has reached a position below the action portion of each injection needle protrusion prevention claw, the injection is performed. Even if the needle is going to rise due to an impact or the like, the upper edge of the flange of the insertion head abuts against the lower surface of the working portion of each injection needle pop-out preventing claw, thereby preventing the injection needle from popping out above the injection pop-out preventing claw. Even if the lid is closed and the injection needle rises due to impact or the like, and the flange of the insertion head abuts against the lower surface of the operation portion, the lower surface of the operation portion does not have the inclined surface as described above. The reason is that each of the injection needle protrusion prevention claws cannot be pushed out. Therefore, when the insertion head of the injection needle is caught by the needle withdrawing means at the time of withdrawal of the needle and does not fall into the container, the user of the needle withdrawal device inserts the needle caught by the needle withdrawal means into the container. Even if the container is shaken violently with the hand in hand or the container is hit with the edge of the desk with the hand, there is no danger that the injection needle will jump out of the container.

After the flange of the insertion head of the injection needle has passed between the respective injection-needle protrusion preventing claws, in other words, after the injection needle insertion head has reached a position below the action portion of each injection-needle protrusion prevention claw. The syringe needle is withdrawn from the syringe body by the needle withdrawal means and falls into the container.

[0015]

Next, embodiments of the present invention will be described with reference to the accompanying drawings. First, the point that the injection needle detacher of the present invention is common to the conventional injection needle detacher will be described with reference to FIGS. In the following description, the same reference numerals as those described above are used for parts, members, parts, and the like that are common to the conventional injection needle detachment device.

Reference numeral 1 denotes a container 1 for accommodating an injection needle. The container 1 has a cap 5 at its opening 3.
Attach. As an example, the cap 5 is detachably screwed into the opening 3 of the container 1, but the cap 5 may be fixed to the opening 3 of the container 1 so as not to be detachable. A syringe receiver 7 having a needle insertion hole 6 is attached to the cap 5 so as to be slidable in the vertical direction. The upper surface of the syringe receiving portion 7 is provided with a shape adapted to the end surface 13a of the syringe body 13. The rotating body 9 is pivotally attached to the cap 5 near the side of the injection needle passage 10 below the syringe receiving portion 7 so as to be rotatable in the vertical direction. That is, the rotating body 9 includes a rotating shaft 12 supported by the cap 5. The rotating shaft 12 may be formed integrally with the rotating body 9. In the illustrated case, the passage 10 of the injection needle is formed by a pair of opposing cross-sectionally substantially arc-shaped bodies 10a extending below the syringe receiver 7, and the rotating body 9 is formed by cross-sections of the substantially circular-arc-shaped bodies 10a. Substantially arc-shaped body 10a
Are provided in two gaps 10 'between the two. Rotating body 9
Is provided with a needle removing means 15 for removing the injection needle 11 from the syringe body 13. In the illustrated case, the needle withdrawing means 15 has a claw-shaped tip with the needle 1.
The needle 11 is detached from the syringe body 13 together with the insertion head 11a by rotating downward while being in contact with the upper edge of the flange 11b of the insertion head 11a in FIG. The rotating body 9 is provided with elastic return means 19 for bringing the rotating body 9 into constant contact with the lower end 17 of the syringe receiving portion 7 and returning the rotating body 9 and the syringe receiving portion 7 to their original positions. . As the return means 19, a spring is used as an example.

Next, the injection needle protrusion preventing claw according to the present invention will be described. At least one pair of elastic injection needle protrusion preventing claws 21 having elasticity is provided on the side of the passage 10 of the injection needle 11 in the container 1. Three or more injection needle protrusion preventing claws 21 may be provided on the side of the passage 10 of the injection needle 11.

In the example shown in FIGS. 3 to 8, a pair of injection needle protrusion preventing claws 21 is provided. It is formed integrally with each of the arc-shaped members 10a.

On the other hand, in the case shown in FIGS. 9 to 11, an elastic plate-like body 23 is fixed to the lower surface of the syringe receiving portion 7, and a part of the pair of injection needle pop-out preventing claws 21 is fixed to a part of the elastic plate-like body 23. 'Has been formed. These injection needle pop-out preventing claws 21 'face the gap 10' between the substantially arc-shaped body 10a and the substantially arc-shaped body 10a. FIG.
Reference numeral 25 denotes a bent portion of the elastic plate 23.

Each of the injection needle protrusion preventing claws 21 (21 ') has an action portion 27 above the upper edge of the flange 11b of the insertion head 11a of the injection needle 11 at the time of starting the removal of the injection needle. The action portion 27 of each injection needle protrusion prevention claw 21 (21 ′) is always projected into the passage 10 of the injection needle 11. The action portion 27 of each of the injection needle pop-out prevention claws 21 (21 ') has an inclined surface 29 whose upper surface is gradually lowered toward the center of the passage 10 of the injection needle 11. When the injection needle 11 advances downward from above the operation portion 27, the lower edge of the flange 11b of the insertion head 11a of the injection needle 11 presses the inclined surface 29 of the operation portion 27, so that each of the injection needle protrusion preventing claws 21 is pressed. (21 ′) is injected into the injection needle 1 against its elasticity.
The injection needle 11 is pushed and spread in a direction away from the center of the first passage 10 so that the injection needle 11 can pass between the operation parts 27 of the injection needle pop-out preventing claws 21 (21 ') and is located below the operation part 27. The upper edge of the flange 11b of the insertion head 11a is brought into contact with the lower surface 31 of the action portion 27 of each of the injection needle pop-out preventing claws 21 (21 '). It is to be prevented from jumping upward. That is, for example, when a pair of injection needle protrusion prevention claws 21 (21 ′) are provided,
The distance between the action portions 27 of the nail 21 (21 ′) for preventing the injection needle protrusion 21 (21 ′) (see reference symbol “a” in FIG.
Is smaller than the diameter of the flange 11b of the insertion head 11a (see the symbol b in FIG. 7).

[0021]

As described above, according to the present invention,
At least one pair of resilient injection needle protrusion prevention claws are provided near the side of the passage of the injection needle in the container. Therefore, in the case of an extremely rare situation in which the insertion head of the injection needle is caught by the injection needle extracting means when the injection needle is detached due to an erroneous operation and does not fall into the container,
The user of the needle withdrawal device attempts to drop the needle that is caught by the needle withdrawal means into the container, holding the container in his hand and shaking it violently, or holding the container in his hand and hitting the edge of a desk, etc. Even when this is done, there is no danger that the injection needle will jump out of the container due to the momentum. That is, accidental danger to the human body due to the used injection needle which has once been detached from the syringe body and dropped into the container escapes from the container is eliminated, and high safety of the injection needle detacher is secured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a needle removal device.

FIG. 2 is a cross-sectional view showing the movement of each part when the syringe body is pressed downward in a state where the end face of the syringe body is in contact with the syringe receiving part in the injection needle detachment device.

FIG. 3 is a front view showing a syringe receiving portion and an injection needle pop-out preventing claw.

FIG. 4 is a sectional view of the same.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is an explanatory view showing a syringe and an injection needle pop-out preventing claw.

FIG. 7 is an explanatory view showing an insertion needle insertion head and an injection needle pop-out prevention claw.

FIG. 8 is an enlarged front view of the injection needle pop-out prevention claw.

FIG. 9 is a cross-sectional view showing a syringe receiver and another injection needle pop-out preventing claw.

FIG. 10 is an enlarged front view showing the injection needle pop-out preventing claw according to the first embodiment.

FIG. 11 is a bottom view showing the syringe receiver and the injection needle pop-out preventing claw according to the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 3 Opening 5 Cap 6 Injection needle insertion hole 7 Syringe receiver 9 Rotating body 10 Injection needle passage 10 'Interval 10a Substantially arc-shaped body 11 Injection needle 11a Insertion head 11b Flange 12 Rotation axis 13 Syringe body 13a End face 15 Injection needle withdrawal means 17 Lower end 19 Return means 21 Injection needle pop-out prevention claw 21 ′ Injection needle pop-out prevention claw 23 Elastic plate 25 Bending part 27 Working part 29 Inclined surface 31 Lower surface

Claims (2)

[Claims] A container for accommodating an injection needle is provided with an injection needle extracting means, and the injection needle extracting means is adapted to extract the injection needle from the syringe body and drop the extracted injection needle into the container. The at least one pair of injection needle protruding prevention claws having elasticity is provided on the side of the passage of the injection needle in the container, and each of the injection needle protruding prevention claws is an injection needle at the start of removal of the injection needle. The insertion head has an action portion above the upper edge of the flange, and the action portion of each injection needle protrusion prevention claw always projects into the passage of the injection needle, and the action portion of each injection needle protrusion prevention claw has an upper surface. An inclined surface is formed so as to be gradually lowered toward the center of the passage of the injection needle, and when the injection needle advances downward from above the working portion, the lower edge of the flange of the insertion head of the injection head in the injection needle is formed. By pressing the inclined surface of the action portion, each injection needle pop-out preventing claw is pushed out in a direction away from the center of the injection needle passage against its elasticity so that the injection needle moves between the action portions of the injection needle pop-out prevention claw. Injection needles that can pass through and are located below the working portion are positioned higher than the respective injection needle protrusion preventing claws by the upper edge of the flange of the insertion head abutting against the lower surface of the working portion of each injection needle protrusion preventing claw. An injection needle detacher characterized in that it is prevented from jumping upward. 2. A container for accommodating a syringe needle is provided with a cap at an opening thereof, and a syringe receiver having a needle insertion hole is slidably attached to the cap so as to be vertically slidable. Is pivotally mounted below the syringe receiving portion so as to be rotatable up and down, the rotating body is provided with a needle removing means for removing the injection needle from the syringe main body, and further comprises the rotating body. In the injection needle detachment device, the rotating body is always provided in contact with the lower end of the syringe receiving portion and elastic return means for returning the rotating body and the syringe receiving portion to the original position is provided. At least one pair of resilient needle pop-out preventing claws having elasticity are provided on the side of the passage of the injection needle inside, and each of the needle pop-out preventing claws is provided with a flange of the needle insertion head at the time of starting the removal of the needle. It has an action portion above the upper edge, and the action portion of each injection needle pop-out preventing claw always projects into the passage of the injection needle. The lower end of the flange of the insertion head of the injection needle presses the inclined surface of the working portion when the injection needle advances downward from above the working portion. Thereby, each of the injection needle pop-out preventing claws is pushed out and spreads in a direction away from the center of the passage of the injection needle against its elasticity so that the injection needle can pass between the working portions of the injection needle pop-out prevention claw, and The injection needle located below the action portion is prevented from projecting above each injection needle protrusion prevention claw by the upper edge of the flange of the insertion head abutting against the lower surface of the action portion of each injection needle protrusion prevention claw. The feature is that Injection needle withdrawal device that.