JP2006014855A - Syringe needle disposal case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a syringe needle disposal case allowing a user to take out an insertion type syringe needle from a syringe body by simple operation without supporting a case body so as not to move it. <P>SOLUTION: A needle detachment hole 7 is bored on a lid 2 of the case body 1 for inserting the syringe needle into the case body 1 leaving the syringe body A1. When the syringe body A is rotated downward so that the lower end edge of the syringe body A inserted into the case body 1 from the needle detachment hole 7 is engaged with the front surface of the lid 2, a hub a3 is taken out from a hub insertion barrel a2 at the lower end of the syringe body A1 with the vectors of the moment to make the engagement part act on a fulcrum B and to make a hub guard part a3' engaged with the rear surface of the lid 2 act on a working point C. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a syringe waste container for extracting a syringe needle that is inserted into a used syringe body.

Conventionally, in hospitals and the like, it is desirable to dispose of used syringes in order to prevent infectious diseases, so that the syringe body and the needle can not be reused. It is extracted and accommodated in a container.
Various types of waste containers for injection needles of this type are known.
As an example, a U-shaped hole or U-shaped hole is opened in communication with a cylindrical hole opened in the lid of the container body, and the lower edge of the U-shaped hole is directed toward the tip of the hole. The hub insertion tube portion exposed between the hub at the proximal end of the syringe once inserted into the cylindrical hole and the syringe body is slid into the U-shaped hole, and the inclined surface is gradually increased. The hub at the proximal end of the syringe is inserted into the structure in which the hub is forcibly pushed down and the injection needle is pulled out of the hub insertion tube and dropped into the container body (see, for example, Patent Document 1), or the notch formed in the lid of the container body. The hub insertion cylinder part exposed between the syringe and the lower end of the syringe body is inserted, and the syringe body is pulled upward by pulling the syringe body upward, and the needle is pulled out and dropped into the container body (for example, Configured in Patent Document 2), the sliding force of the syringe is applied to the meat of the lid It is the mainstream that the needle is pulled out from the syringe body by converting it to a downward force by gradually increasing, or a fixed wall is provided on the lid when the syringe is pulled out, and the needle is pulled out by the fixed wall It has become.

However, in the slide method, the syringe is slid, and the gap between the syringe body and the needle is gradually wedged into the inclined surface, and the needle is pushed down by using the biting force. Since it is a thing, it is necessary to support a container main body with a hand so that a bite force may arise so that it may not move.
Also in the pulling method, it is necessary to hold the container main body by hand and prevent the container main body from being lifted by the pulling force.
For this reason, the operation of the syringe is performed with the container body fixed with one hand, and the work of removing the injection needle is troublesome.
Japanese Utility Model Publication No. 7-9335 JP 2003-285856 A

  The present invention has been made in view of the above-described conventional circumstances, and the purpose of the present invention is to dispose of the injection needle with a simple operation of removing the insertion type injection needle from the syringe body without supporting the container body so as not to move. To provide a container.

The technical means taken in order to solve the above-mentioned problem is to open a needle removing hole to be inserted into the container main body, leaving the syringe main body on the lid of the container main body, and the injection needle from the needle removing hole into the container main body. When the syringe main body is rotated downward so that the lower end edge of the syringe main body into which the syringe is inserted is engaged with the lid surface, the engaging portion serves as a fulcrum and the hub collar portion engaged with the back surface of the lid serves as an action point. A waste container for a needle, wherein the needle is pulled out from the hub insertion tube at the lower end of the syringe body by a moment vector (claim 1).
The needle removal hole is larger than the hub collar, but it is preferable that the needle removal hole be slightly larger.
Also, a syringe insertion hole having a size that allows at least a hub at the proximal end of the injection needle to be inserted into the container body on the lid of the container body, and a needle removal lateral hole that is opened to communicate with the syringe insertion hole The side hole for removing the needle is formed to have a small width so that the hub insertion cylinder portion exposed between the lower end of the syringe body and the hub can be slidably guided, and the hub insertion is inserted from the side hole for removing the needle. When the syringe body is rotated downward in the direction intersecting the lateral hole above the needle so that the lower end edge of the syringe body into which the cylinder portion is slid and inserted is engaged with the lid surface, the engaging portion is a fulcrum, It is also effective when the injection needle is configured to be extracted from the hub insertion cylinder with a vector of moment with the hub collar engaged with the back surface of the lid as an action point (Claim 2).
The syringe insertion hole is formed in an arbitrary size that minimizes the diameter into which the hub collar of the injection needle can be inserted.

According to the above means, according to the first aspect, the syringe body is left at the point of action only by rotating the syringe body downward while leaving the syringe body, with the hub at the proximal end of the syringe needle removed and inserted from the hole. Pull out the injection needle from the hub tube with the moment vector (downward vector).
Further, in claim 2, the hub at the proximal end of the syringe is inserted into the syringe insertion hole, and the hub insertion tube portion between the lower end of the syringe body and the hub collar is slid into the small needle removing lateral hole, By removing the syringe body and rotating it downward in the direction crossing the upper side of the lateral hole, the injection needle is pulled out of the hub insertion tube with a moment vector (downward vector) generated at the point of action.

  Moreover, instead of the syringe insertion hole, a needle removal hole that is inserted into the container main body leaving the syringe main body is opened in the lid of the container main body, and a syringe is inserted into the container main body from the needle removal hole. When the syringe body is rotated downward so that the lower edge is engaged with the lid surface, the injection needle is a moment vector with the engaging portion as a fulcrum and the hub collar engaging with the back surface of the lid as a working point. Is more effective if it is configured to be removed from the hub insertion tube at the lower end of the syringe body (claim 3).

  According to the above means, the injection needle is removed from the hub insertion tube at the lower end of the syringe body using both the first and second methods.

  If the needle removal hole is a hole made of a perfect circle, the injection needle can be pulled out by rotating the syringe body downward from 360 ° in any direction (Claim 4), and the lid of the container body is composed of an inclined surface. This is suitable for inserting the syringe into the needle removal hole or syringe insertion hole in a natural working posture (claim 5).

Since the present invention is configured as described above, it has the following advantages.
(Claim 1) With the method of rotating the syringe needle body downward with the syringe body remaining in the needle removal hole and being inserted into the container body, the syringe body with the moment vector (downward vector) generated at the action point Because the needle is removed from the hub insertion tube of this product and uses the principle of the lever, the force can be light and the needle can be removed without supporting the container body with one hand. The extraction of the injection needle is very simple, and is particularly effective for the extraction of the injection needle from a syringe having a syringe body larger in diameter than the hub collar.

(Claim 2) Once inserted into the syringe insertion hole, slide the hub insertion cylinder part exposed between the lower end of the syringe and the hub into the needle removal lateral hole communicating with it, and remove the needle body horizontally. By rotating downward so as to cross over the hole, the needle can be easily pulled out with little force without supporting the container body. Especially, the hub collar and syringe body are the same size or slightly smaller. The injection needle can be removed from the syringe.

(Claim 3) When the needle removal hole according to claim 1 and the needle removal lateral hole according to claim 2 are formed to communicate with each other, a syringe having a large diameter syringe body with respect to the hub collar is obtained. In the case of a syringe having a needle removal hole, and a hub collar and a syringe body of the same size or slightly small, the needle can be removed by using a needle removal lateral hole, which is very convenient.

(Claim 4) Since the needle removal hole is a perfect circle, the convenience of extracting and dropping the injection needle can be achieved even if it is rotated 360 degrees downward from any direction.

(Claim 5) Further, when the lid of the container body is an inclined surface, for example, the needle can be inserted into the needle removal hole or the syringe insertion hole by extending the hand holding the syringe in a natural working posture sitting on a chair. Further, the operation of extracting the injection needle can be further simplified.

  Next, several embodiments of the present invention waste container for injection needles will be described with reference to the drawings. FIGS. 1 to 4 show the first embodiment, FIG. 5 shows the second embodiment, and FIG. 6 shows a third embodiment, FIG. 7 shows a fourth embodiment, and FIG. 8 shows a fifth embodiment.

As shown in FIG. 2, the container body 1 is provided with an undercut 11 on the outer surface slightly below the open portion, and the underhang 11 protrudes inwardly from the lower end of the side wall portion 12 of the inner lid 2. And a double lid structure in which the outer lid 3 is rotatably provided with respect to the inner lid 2.
Further, as shown in FIG. 2, the outer lid 3 is rotatably assembled around a latching portion 4 that is latched on the central portion of the inner lid 2 so as not to be pulled out. Correspondingly, the window portion 5 is opened, and a screwing portion 6 is formed between the side wall portion 13 and the side wall portion 12 of the inner lid 2, and tightening is performed on the inner surface of the lower end of the side wall portion 13 by screwing. In some cases, a hooking claw 23 is formed that is overwhelmed by a hooking protrusion 32 protruding from the outer surface of the side wall portion 12 of the inner lid 2 and is hooked so that it cannot be released (reverse rotation is impossible).

  In the inner lid 2, a needle removing hole 7 for removing the injection needle a 1 of the syringe A facing the window 5 of the outer lid 3 and a needle removing lateral hole 8 are opened in communication.

  As shown in FIGS. 1 and 2, the syringe A has a hub insertion cylinder a2 that projects from the lower end of the syringe main body A1 with a tapered shape, and is formed in a hub a3 at the base end of the injection needle a1. Is a well-known plug-in type that is assembled to the syringe body A1 by assembling the injection needle a1 into the syringe body A1 and surrounding the hub collar a3 'at the end of the hub a3 on the syringe body A1 side. .

  The needle removal hole 7 is used for removing the injection needle a1 from the syringe A whose syringe body A1 is larger in diameter than the hub collar a3 ′, and the needle removal lateral hole 8 is provided so that the syringe body A1 is connected to the hub collar a3 ′. It can be used for extracting the injection needle a1 from the syringe A of the same size or slightly small.

  The needle removal hole 7 is opened with a circular shape slightly larger than the hub collar part a3 ′, and when the injection needle a1 is inserted, the injection needle a1 and the injection needle a1 are left together with the injection needle a1. A hub a3 provided integrally at the end is inserted into the container body 1.

On the lid of the container body 1, that is, the inner lid 2, a rib 17 having a required height is erected downward from the lower edge of the needle removal hole 7.
As shown in FIG. 2 and the like, the rib 17 of the needle removal hole 7 is inserted into the container main body 1 together with the hub a3 while leaving the syringe main body A1, and then the lower end edge of the syringe main body A1 is the inner lid 2. When rotating to engage with the surface, a vector (downward vector) generated at the action point C by a moment having the engagement part as the fulcrum B and the hub flange part a3 ′ engaging with the end of the rib 17 as the action point C ) Is provided with a required height so as to act with a required force for extracting the hub a3 from the hub insertion cylinder a2 at the lower end of the syringe A.

  The needle removal lateral hole 8 communicates with the needle removal hole 7 with such a small width that it can slide-guide the hub insertion tube portion a2 'exposed between the lower end of the syringe body A1 and the hub collar a3'. It is opened in the shape of a long hole.

  As shown in FIG. 3, a rib 18 having a required height is erected downward from the lower edge of the lateral side hole 8 as shown in FIG. The distance between the 18 end and the inner lid 2 surface is set to be slightly smaller than the distance between the lower end of the syringe main body A1 and the upper surface of the hub collar a3 ′, and the lower end of the syringe main body A1 and the hub collar a3 ′ After sliding the hub insertion cylinder a2 ′ exposed between the two, the syringe body A1 is removed from the needle and crosses over the lateral hole 8 so that the lower end edge of the syringe body A1 engages the surface of the inner lid 2 The moment vector (downward vector) with the engaging portion serving as the fulcrum B and the hub collar a3 ′ engaged with the end of the rib 18 as the point of application C when the pivoting portion is turned downward in the direction (the downward vector) It is comprised so that it may act with the required force extracted from the insertion cylinder a2.

When the inner lid 2 is thin, the ribs 17 and 18 described above rotate greatly when the syringe body A1 is turned downward, and the moment vector (downward vector) causes the hub a3 to move to the syringe body A1. It does not act with the required force in the direction of pushing down from the hub insertion tube a2 at the lower end. It is provided to correct it.
Therefore, the thickness of the inner lid 2 is formed with a necessary thickness that causes the moment vector (downward vector) acting on the action point C to act with a required extraction force in the direction of extracting the hub a3 from the hub insertion cylinder a2. If it is, the ribs 17 and 18 are not necessary.

  As shown in the schematic view shown in FIG. 4, the inner lid 2 and the outer lid 3 are structured to be tightened by rotating the outer lid 3 in the clockwise direction, and on the outer surface of the side wall portion 12 of the inner lid 2, While engaging projections (refer to the left engagement projection in FIG. 4 as a first engagement projection and a right engagement projection as a second engagement projection in FIGS. On the inner surface of the side wall 13 of the outer lid 3, the triangular hooking claw 23 that gets over the second hooking protrusion 32 on one side with a slightly narrower angle than 180 degrees across the center, and the protrusion 33 for preventing rotation on the other side. Are protruding from each other.

  As shown in FIG. 4, the hooking claw 23 includes an upright surface 23 a provided so as to be orthogonal to the curved surface of the inner lid 2, and an inner surface of the side wall portion 13 in the clockwise direction from the protruding end of the upright surface 23 a. It has a triangular cross-sectional shape composed of an inclined surface 23b provided continuously over the entire area.

FIG. 4A shows a state in which the outer lid 3 is not fastened to the inner lid 2, and the needle removing hole 7 and the needle removing lateral hole 8 are formed in the inner lid 2 portion facing the window portion 5 of the outer lid 3. A hole is formed in communication, the upright surface 23a of the latching claw 23 is slightly separated from the side surface 32a of the first latching projection 32 of the inner lid 2 on the clockwise direction side, and the projection 33 for preventing rotation is the second latching projection 32. The outer lid 3 is in contact with the side surface 32a on the clockwise direction side to permit the clockwise rotation of the outer lid 3.
When the outer lid 3 is rotated in the clockwise direction from this state, the tightening state shown in FIG. 4C is changed through FIG. In FIG. 4 (c), the outer lid 3 is rotated clockwise by about 180 degrees, the triangular hooking claw 23 gets over the second hooking protrusion 32, and the upright surface 23a is rotated clockwise. The rotation-preventing projection 33 approaches or abuts the counterclockwise side surface 32b of the first engagement projection 32, and moves toward or from the direction side surface 32a. The prevention protrusion 33 cannot move between the hooking protrusions 32, 32, and the outer lid 3 cannot be relaxed with respect to the inner lid 2, that is, cannot be reversely rotated.

When the injection needle a1 is removed from the syringe main body A1 with the injection needle waste container of this embodiment configured as described above, the syringe main body A1 is in the syringe A having a larger diameter than the hub collar a3 ′. The injection needle a1 is inserted so that the lower end of the syringe main body A1 abuts against the surface of the inner lid 2, and the syringe main body A1 is turned downward to the operating point C as shown in FIGS. 2 (a), (b), and (c). The injection needle a1 is pulled out from the hub insertion tube a2 of the syringe main body A1 by the vector of the moment generated (downward vector) and dropped.
If the syringe body A1 is a syringe A having a size equivalent to the hub collar a3 ′ or a slightly small size, the needle a1 will be extracted with the moment vector (downward vector) using the needle removal hole 7. Then, there is a possibility that the syringe main body A1 rotates greatly, and the moment vector (downward vector) does not act on the action point C with a required extraction force in the extraction direction of the injection needle a1.
Therefore, in such a syringe A, after inserting the hub a3 into the needle removal hole 7 in the same manner, the hub insertion between the lower end of the syringe body A1 and the hub a3 as shown in FIG. The cylinder part a2 'is removed from the needle and slid into the lateral hole 8, and then the syringe body A is rotated downward so as to intersect with the upper part of the lateral hole 8 from which the needle is removed. The needle A1 can be pulled out from the hub insertion tube a2 of the syringe main body A1 and dropped by acting at the point C with a required pulling force.
When the inside of the container body 1 is filled with the injection needle a1, the outer lid 3 is fastened to the inner lid 2 so that the needle removing hole 7 and the needle removing lateral hole 8 are covered with the outer lid 3, Make it impossible to open the lid.

  Next, a second embodiment shown in FIG. 5 will be described. In this embodiment, a tapered portion 27 is formed at the upper edge of the needle removal hole 7 and the tapered portion 27 is guided by a downward gradient. This is designed to facilitate the insertion of the injection needle a1 into the needle removal hole 7 by the action.

Further, a third embodiment shown in FIG. 6 will be described. In this embodiment, the needle removal hole 7 and the needle removal lateral hole 8 are separately formed.
A needle insertion hole 28 of an arbitrary size into which the hub a3 is inserted into the container body 1 is inserted into the side hole 8 for removing the needle, and is opened by communicating with the side hole 8 through the needle. After inserting up to a3, the syringe A is configured to be slidable in the lateral hole 8 from which the needle is removed.

Further, the fourth embodiment shown in FIG. 7 shows a modified example of the container body 1, and a flap 9 that covers the needle removal hole 7 via a hinge portion 10 is turned up and down on a screw-fit lid 21. When the inside of the container body 1 is filled with the injection needle a1, the flap 9 can be moved by the flap 9 so that the tab 19 at the tip of the flap 9 can be hooked in the hooking hole 21a opened in the lid 21. The needle removal hole 7 is covered.
Needless to say, even if the lid 21 has the needle removal lateral hole 8 in communication with or separately from the needle removal hole 7, the needle 9 can be covered with the flap 9.

  Further, the fifth embodiment shown in FIG. 8 is a modified example of the container body 1, and the lid that opens the needle removal hole 7 and the needle removal side hole 8 is inclined and is naturally seated on a chair. The needle a1 can be inserted into the needle removal hole 7 or the syringe insertion hole 28 by extending the hand that holds the syringe A while maintaining a proper working posture.

Regardless of the syringe manufacturer, the hub a3 at the proximal end of the injection needle has a hub collar a3 ′ formed in a circular shape, a substantially elliptical shape, a horizontally long rectangular shape, or the like. When the hub collar a3 ′ is circular, the diameter is generally 6 mm to 8 mm, and when the hub collar a3 ′ is other than that, the short dimension is within 6 mm and the longitudinal dimension is within 8 mm.
The maximum tube diameter of the hub insertion tube portion a2 ′ exposed between the lower end of the syringe main body A1 and the hub a3 is about 4.4 mm regardless of the syringe.
The length of the hub insertion tube portion a2 ′ exposed between the lower end of the syringe main body A1 and the hub a3 is 1.9 mm to 2 when the syringe main body A1 is a larger diameter syringe than the hub collar portion a3 ′. When the hub collar part a3 ′ and the syringe main body A1 are about the same size or slightly small, the size is about 1.1 mm.
Therefore, the needle removal hole 7 is opened with a diameter of about 0.1 to 0.2 mm larger than its maximum dimension of 8 mm, and the lower end edge of the syringe body A1 which is rotated downward is engaged. The distance between the surface portion of the inner lid 2 to be engaged and the back surface portion of the inner lid 2 with which the hub collar a3 ′ engages, that is, the height difference between the fulcrum action points was set to 1.8 mm.
The needle removal lateral hole 8 was opened with a width of about 4.5 mm, the fulcrum action point height difference was set to 1 mm, respectively, and an experiment was conducted on the removal effect of the injection needle.
As described above, since the height difference between the fulcrum action points is different from 1.8 mm and 1 mm, the detachment side hole 8 portion is provided with a step with respect to the needle removal hole 7 portion so that the fulcrum action point height is low. The difference was set as small as 1 mm.
According to this, as a result of rotating the syringe main body A1 downward in both the needle removal hole 7 and the needle removal horizontal hole 8, the injection needle a1 can be easily removed from the hub insertion tube a2 ′ without supporting the container body 1 with one hand. It was something that could be removed. This is because the lower end of the syringe main body A1 is engaged with the surface of the inner lid 2 and the hub collar part a3 ′ is engaged with the back surface of the inner lid 2 and becomes a point of action within a rotation angle of 45 degrees. It is presumed that the downward vector is concentrated at the action point.
This experimental example is merely an example, and it is needless to say that a smaller rotation angle is preferable because a larger downward vector of moment acts on the hub collar as an action point.

It is a perspective view of the waste container for injection needles of 1st Embodiment, and shows the state which inserts the injection needle of the syringe whose syringe main body is larger diameter than a hub collar part in a needle removal hole. (2)-(2) line enlarged sectional view of FIG. 1 shows the lid portion, (a) shows a state where the injection needle is inserted into the needle removal hole and the syringe body is rotated downward, (b ) Shows a state where the injection needle is withdrawn from the syringe body with a vector of moment acting on the action point C, and (c) shows a state where the needle has been completely removed. FIG. 7 is a diagram showing the relationship between the injection needle of the syringe having the same diameter or slightly smaller diameter with respect to the hub collar, and the side hole removed from the needle, and (a) shows the state where the needle is removed and inserted into the side hole. (B) shows a state in which the injection needle is pulled out from the syringe body with a vector of moment acting on the action point. It is a top view which shows the relationship between an outer lid and an inner lid roughly, (a) shows the relationship with the inner lid of the outer lid at the time of relaxation, (b) rotates the outer lid clockwise. (C) shows the relationship between the outer lid and the inner lid during tightening. Sectional drawing of the principal part of the waste container for injection needles of 2nd Embodiment. The top view of the waste container for injection needles of 3rd Embodiment. The longitudinal cross-sectional view of the waste container for injection needles of 4th Embodiment. It is partially cut away and shown in a front view of a syringe waste container according to a fifth embodiment.

Explanation of symbols

1: Container body 2: Lid (inner lid)
7: Needle removal hole 8: Needle removal side hole A: Syringe A1: Syringe body a2: Hub insertion tube a3: Hub a3 ': Hub collar B: Support point a1: Injection needle a2 ": Insertion hole C: Action point 28: Syringe insertion hole a2 ': Hub insertion tube portion exposed between the lower end of the syringe body and the hub

Claims (5)

  Open the needle removal hole that is inserted into the container body while leaving the syringe body on the lid of the container body, and the lower end edge of the syringe body that inserts the injection needle into the container body from the needle removal hole engages the lid surface When the syringe body is rotated downward, the syringe needle is inserted into the hub at the lower end of the syringe body with a moment vector with the engaging portion as a fulcrum and the hub collar engaging with the back of the lid. A waste container for a syringe needle configured to be extracted from a cylinder.   A syringe insertion hole having a size that allows at least a hub at the proximal end of the injection needle to be inserted into the container main body, and a needle removal lateral hole that is opened to communicate with the syringe insertion hole. The needle removal side hole is formed to have a small width so that the hub insertion cylinder part exposed between the lower end of the syringe main body and the hub can be slidably guided, and the hub insertion cylinder part is formed from the needle removal side hole. When the syringe body is rotated downward in a direction intersecting the upper side of the lateral hole, the lower end edge of the syringe body into which the slide is inserted is engaged with the lid surface. A waste container for a needle, wherein the needle is pulled out from the hub insertion tube with a vector of moment with the hub collar engaging with the hub.   Instead of the syringe insertion hole, a needle removing hole that is inserted into the container main body leaving the syringe main body is opened in the lid of the container main body, and the lower end of the syringe main body is inserted into the container main body from the needle removing hole When the syringe body is rotated downward so that the edge engages with the lid surface, the syringe needle is moved with a vector of moment with the engaging portion as a fulcrum and the hub collar engaging with the back surface of the lid as a working point. 3. The syringe needle waste container according to claim 2, wherein the syringe needle waste container is configured to be removed from the hub insertion tube at the lower end of the syringe body.   4. The waste container for an injection needle according to claim 1, wherein the needle removal hole is a hole made of a perfect circle.   The waste container for a syringe needle according to any one of claims 1 to 4, wherein the lid of the container body is constituted by an inclined surface.

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