JP2017086630A - Needle detaching aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a needle detaching aid that has a simple configuration and is superior in portability, and prevents erroneous puncture, and thereby is capable of performing detachment and disposition of a needle safely and reliably.SOLUTION: A needle detaching aid is characterized as follows: a cylindrical pinching part 10 formed of a first hole part 12 for holding a needle case and a cylindrical base unit 11 with an outer size formed larger than the pinching part 10 and formed of a second hole part 16 in communication with the first hole part 12 and enabling a case to pass are integrally formed by an elastic resin material; also, the first hole part 12 of the pinching part 10 is formed in an elliptical shape having a long axis Lof a diameter larger than an outer diameter of the case and a short axis Lof the diameter smaller than the outer diameter of the case; and thereby the case is holdably formed in the short axis direction by the elasticity and the holding of the case is releasably formed by increasing the diameter in the short axis direction to the compressive force exerting longitudinally.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an injection needle attaching / detaching aid used for attaching / detaching an injection needle to / from various injectors such as a pen-type insulin injector.

  In insulin self-injection therapy for diabetic patients, for example, it is necessary to attach a new injection needle for each injection to a pen-type insulin injector and discard the injection needle after the injection.

FIG. 10 shows a general-purpose assembly in which an injection needle that is attached to and detached from an insulin injector during such injection is housed.
The assembly 1 is roughly constituted by an injection needle 2, a needle cap 3 and a case 4. Here, the injection needle 2 is fixed to a bottomed cylindrical resin mounting portion 5 so as to protrude from the center of the bottom portion, and a pen-type insulin injector, which will be described later, is screwed onto the inner wall of the mounting portion 5. A female screw 5a to be joined is formed. In addition, a rear needle 2a of the injection needle 2 to be inserted into the pen-type insulin injector is disposed in the attachment portion 5.

  Further, the case 4 includes a cylindrical main body portion 4a to which the attachment portion 5 is fitted, a small-diameter tip portion 4b in which the injection needle 2 and the needle cap 3 are accommodated, and the main body portion 4a and the tip portion 4b. It is formed in a shape having a conical cylindrical intermediate portion 4c formed therebetween.

  The assembly 1 is inserted into the distal end portion 4b of the case 4 in a state where the needle cap 3 is sheathed on the injection needle 2 before use, and the attachment portion 5 is fitted to the main body portion 4a of the case 4. In addition, the opening of the case 4 is closed by a protective seal (not shown).

  In order to attach the injection needle 2 to the pen-type insulin injector using the assembly 1 at the time of injecting insulin, the protective seal that closes the opening of the case 4 is first peeled off, as shown in FIGS. The distal end of the pen-type insulin injector 6 is inserted into the attachment portion 5 of the injection needle 2 and rotated in the clockwise direction so that the male screw 6a on the outer periphery of the distal end of the pen-type insulin injector 6 becomes the female screw 5a of the attachment portion 5. At the same time, the rear needle 2a is inserted into the pen-type insulin injector 6.

  Next, as shown in FIG. 13, the pen-type insulin injector 6 is pulled out of the case 4 together with the attachment portion 5 of the injection needle 2 and the needle cap 3 that are screwed together, and then, as shown in FIG. The cap 3 is removed and insulin is injected into the patient via the injection needle 2 by the pen-type insulin injector 6.

  After the injection is completed, it is prohibited in principle to attach the needle cap 3 to the used injection needle 2 again in accordance with a notification from the Ministry of Health, Labor and Welfare. Therefore, as shown in FIG. Is inserted into the tip 4b of the case 4 as it is.

  Next, as shown in FIGS. 16 and 17, the pen-type insulin injector 6 is rotated counterclockwise in a state where the attachment portion 5 is fitted in the main body portion 4a of the case 4, and the male screw 6a and the female screw 5a. By unscrewing, the pen-type insulin injector 6 is removed from the attachment portion 5, and the case 4 in which the injection needle 2 and the attachment portion 5 are accommodated is disposed of in a dedicated disposal container.

  By the way, when the injection needle 2 is attached to and detached from the pen-type insulin injector 6 and self-injected in this way, the assembly 1 containing the injection needle 2 is small, or after removing the protective seal, Due to the fact that the rear needle 2a of the injection needle 2 is exposed in the mounting portion 5, the needle cap 3 is not attached to the injection needle 2 in principle at the time of disposal, and the eyesight of diabetic patients is reduced. At times, there was a problem that erroneous puncture was likely to occur.

  In particular, when the needle 2 is attached / detached by a nurse who teaches the handling of the pen-type insulin injector 6 or a third party such as a family member who assists in the attachment / detachment, the needle 2 is erroneously attached. The puncture causes a risk of infection and a coring problem when the injection needle 2 is attached.

  For this reason, in order to prevent the erroneous puncture at the time of attachment / detachment of the injection needle 2, various auxiliary tools have been proposed so far as seen in Patent Documents 1 to 3 below.

  However, these auxiliary tools have a problem in that the holding stability of the case 4 and the injection needle 2 is lacking in those having a simple structure (Patent Document 1), and those using a rotating mechanism or a motor. (Patent Documents 2 and 3) have a problem that they are not suitable for carrying because of the large number of parts and the complexity of the structure, and are difficult to manufacture at a low cost.

JP 2007-14615 A JP 2009-225825 A Japanese Patent Laying-Open No. 2015-177887

  The present invention has been made in view of the above circumstances, has a simple structure and is excellent in portability, and can be used for attaching and detaching an injection needle that can be safely and reliably attached and detached while preventing erroneous puncture. It is an object to provide an auxiliary tool.

  In order to solve the above-described problem, the auxiliary tool for attaching / detaching an injection needle according to the present invention described in claim 1 (hereinafter abbreviated as an auxiliary tool) is formed with a first hole for holding the case of the injection needle. A cylindrical pinching portion and a second hole portion having an outer dimension larger than the holding portion and having an inner dimension that allows the case to pass through the first hole portion. The cylindrical base portion formed integrally with a resin material having elasticity, and the first hole portion of the clamping portion has a long axis larger than the outer diameter of the case and the case Is formed into an oval or an ellipse having a minor axis smaller than the outer diameter of the lens, so that the case can be clamped in the minor axis direction by the elasticity, and the compressive force acting in the major axis direction is applied. On the other hand, the pinch of the case is released by expanding the diameter in the short axis direction. And it is characterized in that it is formed on the ability.

  According to a second aspect of the present invention, in the first aspect of the present invention, the base portion is formed by an inclined surface that gradually protrudes outward as the outer peripheral surface moves away from the clamping portion side. It is characterized by this.

  Furthermore, the invention according to claim 3 is the invention according to claim 1 or 2, wherein the holding portion has recesses formed on the outer peripheral surfaces on both ends in the major axis direction, and the minor axis direction. A small protrusion is formed on the outer peripheral surface on both ends of the first and the opening edge in the minor axis direction of the first hole is formed with an enlarged portion.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the resin material is silicon rubber.

  In the auxiliary tool according to any one of claims 1 to 4, for example, when the injection needle is attached to the injector using the injection needle assembly as shown in FIG. If it inserts in the 1 hole part, a clamping part will be expanded and the said case can be hold | maintained in a short-axis direction with elasticity. For this reason, with the auxiliary tool supported by a person's finger, the syringe is inserted into the case of the injection needle fitted in the case and rotated, whereby the injection needle mounting portion is attached to the injector. Easy to install.

  Then, after the needle cap is removed and the injection of the medicine by the injector is completed, the injector is attached to the case held in the auxiliary tool and rotated in the reverse direction. And the attachment portion are unscrewed and only the injector is removed, and only the case in which the attachment portion of the injection needle is fitted is held in the auxiliary tool.

  Therefore, when the holding part of the auxiliary tool is compressed by a human finger from both sides in the long axis direction, it is contracted in the long axis direction due to elasticity and expanded in the short axis direction to release the holding of the case. The syringe needle can be dropped into a waste container or the like below the dedicated auxiliary tool by dropping downward through a second hole having an internal dimension through which the case can pass.

Moreover, since the outer dimension of the base part is larger than that of the sandwiching part, it is stable when the base part is placed on the table and the case is attached to the sandwiching part or the injector is rotated. You can do these tasks.
As a result, erroneous puncture can be prevented and the injection needle can be attached and detached and discarded safely and reliably, and the structure is simple, the portability is excellent, and the manufacturing cost can be reduced.

  According to the second aspect of the present invention, since the outer peripheral surface of the base portion is formed by the inclined surface that gradually protrudes outward as the distance from the clamping portion side increases, It is possible to secure a wide area of the bottom surface (mounting surface), and thus it is possible to further improve the stability of the support of the clamping portion by the base portion described above.

  Furthermore, according to the third aspect of the present invention, for example, even when a diabetic patient whose vision is reduced uses this auxiliary tool to attach and detach the injection needle of the insulin injector, The case can be easily inserted into the first hole while supporting the short axis direction of the first hole by touching the protrusion.

  In addition, since the enlarged diameter portion is formed at the opening edge in the short axis direction of the first hole portion, the case can be guided to the enlarged diameter portion and introduced into the first hole portion. The diameter-enlarging action in the minor axis direction of the sandwiching part can be promoted by the diameter-enlarging part.

  Furthermore, since the concave portions are formed on the outer peripheral surfaces on both ends in the long axis direction, even when the injection needle is discarded, the first holding portion can be easily compressed by matching the fingers with the concave portions. It becomes possible to expand the diameter of the hole in the minor axis direction.

  In addition, it is preferable to use various elastomers as the resin material constituting this auxiliary tool. In particular, if silicon rubber is used as in the invention of claim 4, sterilization is easy and versatility is excellent. Is particularly suitable.

It is a figure which shows one Embodiment of the auxiliary tool of this invention, (a) is a top view, (b) is a front view, (c) is a bottom view, (d) is a side view. It is AA sectional view taken on the line of FIG.1 (b). It is a BB line sectional view of Drawing 1 (d). It is a perspective view which shows the state which inserts the case of an injection needle in the auxiliary tool of FIG. It is a perspective view which shows the state which inserts a pen-type insulin injector in the case hold | maintained at the auxiliary tool of FIG. FIG. 6 is a perspective view showing a state in which the distal end portion of the pen-type insulin injector is screwed into the attachment portion in the case of FIG. 5. It is a perspective view which shows the state which takes out the attaching part of the injection needle screwed together in FIG. 6 with a pen type insulin injector. It is a perspective view which shows the state which inserts the injection needle of a pen type insulin injector into the case in an auxiliary tool after injection | pouring. It is a perspective view which shows the state which drops the case which accommodated the injection needle from the auxiliary tool. It is a figure which shows the assembly of the conventional common injection needle, (a) is an exploded perspective view, (b) is an assembly drawing. It is a perspective view which shows the state which inserts a pen-type insulin injector into the assembly of FIG. FIG. 12 is a perspective view showing a state in which the tip portion of the pen-type insulin injector is screwed into the attachment portion of FIG. 11. It is a perspective view which shows the state which removes the pen type insulin injector which attached the injection needle from the case. It is a perspective view which shows the state which removes a needle cap from the injection needle of FIG. It is a perspective view which shows the state which inserts an injection needle in a case after injection | pouring. It is a perspective view which shows the state which rotates a pen type insulin injection device and unscrews with an attaching part. It is a perspective view which shows the state which removes the pen type insulin injector from the injection needle accommodated in the case.

  1 to 3 show an embodiment in which the assisting device according to the present invention is applied to an assisting device for attaching and detaching an injection needle of a pen-type insulin injector, and FIGS. 4 to 9 show how to use the assisting device. It is a figure for demonstrating. Note that the needle assembly and pen-type insulin injector used in the following are the same as those shown in FIGS. 10 to 17, and therefore the same reference numerals are used to simplify the description.

As shown in FIG. 1 to FIG. 3, this auxiliary tool has a holding part 10 for holding the case 4 of the assembly 1 and a base part 11 for supporting the holding part 10 on a table or the like, which are made of silicon rubber. It is molded.
Here, the sandwiching portion 10 is formed in an elliptic cylinder shape having a first hole portion 12 formed in the center portion, and the first hole portion 12 has a larger diameter than the outer diameter of the case 4. The long axis L ₁ and the short axis L ₂ having a smaller diameter than the outer diameter of the case 4 are formed in an elliptical shape.

Then, on the outer peripheral surface of the major axis L ₁ direction of both ends of the clamping portion 10, with each recess 13 is formed on the outer peripheral surface of the minor axis L ₂ direction of both end sides, each small projection 14 is Is formed. Further, the first to the opening edge of the short axis L ₂ direction in the bore portion 12, a stepped increased diameter portion 15 are formed.

  On the other hand, the base part 11 is formed in an elliptical cylindrical shape that is continuous with the outer peripheral surface of the clamping part 10 on one end side, and communicates with the first hole 12 of the clamping part 10 at the center. A second hole 16 is formed.

The second hole 16 is formed in a circular shape having a larger diameter than the outer diameter of the case 4 of the injection needle 2, and is larger than the short axis L _{2 of} the first hole 12 in this embodiment. a diameter, and is formed slightly smaller in diameter than the major axis L _1.

  Further, the outer peripheral surface of the base portion 11 is formed by an inclined surface that gradually protrudes outwardly as it is separated from the clamping portion 10. Thereby, the base part 11 is formed to have a larger outer dimension than the sandwiching part 10, and a mounting surface 11 a having an area larger than the cross-sectional area of the sandwiching part 10 is formed on the bottom surface thereof. .

Next, based on FIGS. 4-9, the effect at the time of attaching / detaching the injection needle 2 with respect to the pen type insulin injector 6 with the auxiliary tool which consists of the above structure is demonstrated.
First, as shown in FIG. 4, the mounting surface 11 a of the base 11 of the assisting tool is placed on the table, and the case 4 of the assembly 1 of the injection needle 2 is replaced with the first holding part 10 of the assisting tool. Insert into the hole 12.

Then, tapered tubular shaped intermediate portion 4c of the case 4, while being guided by the minor axis L ₂ direction of the enlarged diameter portion 15 formed on the opening edge portion of the first hole portion 12, the enlarged diameter portion by the elastic 15 Is introduced into the first hole 12 by being expanded in the short axis direction. Thus, the case 4 is held in the minor axis L ₂ direction in the first hole portion 12 by elasticity.

At this time, by supporting a pair of small projections 14 formed on the outer peripheral surface sides of the minor axis direction of the clamping portion 10 of the clamping portion 10 by sandwiching with a finger in the minor axis L ₂ direction of the first hole portion 12 The case 4 can be smoothly inserted into the first hole 12.

  After housing the case 4 in the first hole 12 of the assisting tool in this way, the auxiliary seal (not shown) is peeled off, and the tip of the pen-type insulin injector 6 is inserted into the injection needle as shown in FIG. As shown in FIG. 6, the male screw 6 a on the outer periphery of the tip end is screwed into the female screw 5 a of the mounting part 5. As a result, the rear needle 2a of the injection needle 2 is inserted into the pen-type insulin injector 6, and the attachment portion 5 of the injection needle 2 is fixed to the tip of the pen-type insulin injector.

  Next, as shown in FIG. 7, the pen-type insulin injector 6 is pulled out from the case 4 together with the attachment portion 5 of the injection needle 2 and the needle cap 3 fixed to the tip, and the needle cap 3 at the tip is removed, and the pen-type Insulin is injected into the patient via the injection needle 2 by the insulin injector 6.

  And after injection | pouring is complete | finished, as shown in FIG. 8, in order to prevent a false puncture, the injection needle 2 is hold | maintained in the 1st hole 12 of an auxiliary tool as it is, without supporting an auxiliary tool with a finger. After inserting into the front end portion 4b of the case 4 and fitting the attachment portion 5 into the main body portion 4a of the case 4, the pen-type insulin injector 6 is rotated counterclockwise to pen from the attachment portion 5 The type insulin injector 6 is removed.

  Next, as shown in FIG. 9, the case 4 in which the injection needle 2 and the attachment portion 5 are accommodated is moved above the dedicated waste container, so that the holding portion 10 of the auxiliary tool is indicated by an arrow in the drawing. Compressed from both sides in the long axis direction with fingers arranged in the recess 13 formed on the outer peripheral surface. Then, as shown by a two-dot chain line in the figure, the clamping portion 10 is contracted in the major axis direction by elasticity and expanded in the minor axis direction so that the clamping of the case 4 by the first hole portion 12 is released, and the base By passing through the second hole 16 of the part 11 and falling downward, it is disposed of inside.

  At this time, the outer peripheral surface of the base portion 11 is formed by an inclined surface that gradually increases in diameter as the distance from the holding portion 10 side increases, thereby making the outer dimension of the base portion 11 larger than that of the holding portion 10. Since the area of the mounting surface 11a is widened, when the base part 11 is placed on the table and the case 4 is attached to the holding part 10 and the injector is rotated, as in the case of FIG. Even if the auxiliary tool is not supported by a finger, these operations can be performed stably, and thus the occurrence of erroneous puncture can be more reliably prevented.

  As described above, according to the assisting device having the above-described configuration, it has a simple structure and is excellent in portability, and can prevent attachment and detachment and disposal of the injection needle safely and reliably while preventing erroneous puncture.

  In addition, the depression 13 and the protrusion 14 are provided so that the operation position and the support position can be recognized by the sense of touch of the finger, and the enlarged diameter portion 15 and the like for guiding the insertion of the case 4 are provided. Even a diabetic patient can easily detach and discard the injection needle 2 from the insulin injector 6 while preventing erroneous puncture.

  In the above-described embodiment, the assisting device according to the present invention has been described only when applied to an assisting device for attaching and detaching the injection needle of a pen-type insulin injector used for the treatment of diabetic patients. It is not limited to this, and by appropriately setting the dimensions of the first hole 12 and the like corresponding to the dimensions of the case 4 and the injection needle 2 and the like, the attachment and detachment and disposal of the injection needle with respect to various types of injectors It can be widely used as an auxiliary tool for performing.

  Moreover, in the auxiliary | assistant tool of the said embodiment, although shown about the case where it shape | molds integrally with silicon rubber, you may integrally mold with other soft resin which has desired elasticity, such as an elastomer.

2 Injection needle 4 Case 6 Pen-type insulin injector (injector)
DESCRIPTION OF SYMBOLS 10 Clamping part 11 Base part 12 1st hole part 13 Concave part 14 Small protrusion part 15 Wide diameter part 16 2nd hole part

Claims (4)

A cylindrical holding part formed with a first hole for holding the case of the injection needle, and an outer dimension larger than that of the holding part, and the case communicated with the first hole. A cylindrical base portion in which a second hole portion having an internal dimension that can pass is formed integrally with a resin material having elasticity,
In addition, the first hole portion of the sandwiching portion is formed in an oval or elliptical shape having a major axis larger than the outer diameter of the case and a minor axis smaller than the outer diameter of the case. The case is formed so that the case can be held in the short axis direction by the elasticity, and the case is formed so that the holding of the case can be released by expanding the diameter in the short axis direction against a compressive force acting in the long axis direction. An auxiliary tool for attaching and detaching an injection needle characterized by comprising:   2. The injection needle attaching / detaching aid according to claim 1, wherein the base portion is formed by an inclined surface that gradually protrudes outward as the outer peripheral surface is separated from the clamping portion side.   The sandwiching portion has recesses formed on outer peripheral surfaces on both ends in the major axis direction, small protrusions formed on outer peripheral surfaces on both ends in the minor axis direction, and the first hole portion. 3. The injection needle attaching / detaching auxiliary device according to claim 1, wherein the enlarged diameter portion is formed at an opening edge portion in the short axis direction.   4. The injection needle attaching / detaching aid according to claim 1, wherein the resin material is silicon rubber.

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