JP2001286563A - Cartridge holder for disposable syringe needle and detacher of the syringe needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a syringe needle detacher allowing a user to detach a syringe needle easily with a simple implement without directly touching the needle in order to solve problems in a current method of detaching a disposable needle that there is a risk of contagion caused by accidental needle puncture, that the handling is complicated because the needle is previously covered with a needle storage case before use, then removed from a holder to be discarded with a cap of the case covering the needle, and that a mechanism of holding a needle with an electric motor for the automatic detachment and an implement for releasing the needle from the mechanism and storing the needle in a disposable bottle are both complicated and expensive. SOLUTION: The barrel top of the cartridge holder for syringe needle has a male screw nearly along one round of the barrel top to be engaged with a female screw on the inner wall of the needle base of a ready-made syringe needle at the upper part of the cartridge holder. The cartridge holder has a lid-shaped detacher and a discarded needle storage case under the detacher. The cartridge holder also has an insertion hole for easily inserting the barrel top engaged with the center on the surface of the detacher and the syringe needle. Grooves for detaching the needle base and for half-turning the, needle base of the syringe needle manufactured by plural companies irrespective of the sources are disposed from the insertion hole as the center toward the periphery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the removal of disposable injection needles mounted on a cartridge holder, and in particular, the removal of the needle base of used injection needles of different companies of different sizes without directly touching. The present invention relates to a syringe needle remover that can be easily implemented without using complicated instruments.

[0002]

2. Description of the Related Art In general, when removing a syringe needle mounted on a cartridge holder for a syringe, cover the syringe needle container housed before use, remove it from the cartridge holder for injection, and cover with a container cap. However, there is a risk of infection due to a so-called “needle stick accident” in which an injection needle is accidentally stuck in a finger, and handling is complicated. Furthermore, the external dimensions of the needle base of the injection needle vary from company to company, and there is no device that can easily remove the needle base of the company-wide product with one device. In addition, for the purpose of automatically removing the injection needle, a mechanism for gripping the injection needle using an electric motor is provided, and the gripping mechanism is driven via gears or the like to remove the injection needle and store it in a waste bottle. Tools, for example, (Japanese Patent Laid-Open No. 9-2
24985), but the mechanism is complicated and expensive.

[0003]

SUMMARY OF THE INVENTION In view of the circumstances described above, the present invention makes it possible to easily remove the needle base of a used disposable injection needle of each company without directly touching it and without using complicated instruments. Provided is a needle unit remover that can be implemented.

[0004]

Means for Solving the Problems The present inventor has solved this problem by the following means as a result of intensive studies in view of the above. (1) The tip of the cartridge holder for the disposable injection needle cartridge is provided with a male screw for 0.7 to 1.8 turns screwed into the female screw on the inner wall of the needle base of the ready-made injection needle at the upper part. Disposable syringe cartridge holder for easy removal of the needle. (2) The tip of the cartridge holder for the disposable injection needle is provided with an external thread for 0.8 to 1.2 turns screwed into the internal thread on the inner wall of the needle base of the ready-made injection needle at the top. Disposable syringe cartridge holder for easy removal of the needle. (3) A disposable injection needle remover screwed to the cartridge holder according to (1) or (2), wherein the disposal injection is detachably attached to a lid-like removal plate and a lower portion thereof. A needle storage container, wherein the detachment plate has, at its center, an insertion port through which the tip of the screwed cartridge holder and the injection needle can be easily inserted, and from the insertion port toward the outside. A disposable syringe needle dismounter, characterized in that a long groove for removing a needle base having a groove width that is reduced to at least the outer diameter of the cylinder tip of the cartridge holder is extended, and plate portions on both sides of the long groove are formed in a wedge-shaped cross section. vessel.

(4) A disposable injection needle remover screwed to the cartridge holder according to item (1) or (2), which is detachably attached to a lid-like detaching plate and a lower portion thereof. The detachable plate has, at the center thereof, a cylinder tip of the screwed cartridge holder and an insertion port through which the injection needle can be easily inserted. A long groove for removing the needle base having a groove width which is reduced to at least the outer diameter of the cylinder tip of the cartridge holder, and plate portions on both sides of the long groove are formed in a wedge-shaped cross section, and opposite to the long groove for removal. A disposable injection needle remover comprising a needle base half-turn long groove having a width equal to or slightly smaller than the outer diameter of the needle base abdomen arranged laterally. (5) The long groove for removing the needle base of the disposable injection needle of another system and the long groove for half rotation of the needle base of the disposable injection needle of the other system in the opposite direction are arranged outward from the insertion port. (4)
Item 6. The disposable injection needle remover according to Item 1. (6) The needle base half-rotation groove of the same system has a groove width into which an octagonal portion at the lower part of the outer peripheral surface of the needle base is inserted. , 4 in the upper center of the outer peripheral surface of the needle base
The disposable injection needle remover according to any one of items (1) to (5), wherein the disposable injection needle remover has a groove width into which the rectangular portion is inserted.

(7) The taper angle of the plate formed in a wedge-shaped cross section on both sides of the needle base removing long groove applicable to the needle bases of all systems is loose on the side close to the insertion opening of the groove, and the tip is The disposable injection needle remover according to any one of (1) to (6), wherein the disposable injection needle remover is formed at an acute angle as it goes.

(8) When the remover has a remover common to each system and a groove for half rotation of the needle base, a needle from one of a plurality of used companies screwed into the cylinder tip of the cartridge holder. Insert the base into the insertion port of the remover from above, and slide it toward the tip of the needle base half-turn groove,
The octagonal portion of the lower part of the outer peripheral surface of the same system needle base is fitted into the corresponding groove width in the middle of the needle base half rotation groove, and in the case of another system needle base, the slide is extended to the tip of the half rotation groove. Advance, fit the square part at the center upper part of the needle base outer peripheral surface into the corresponding groove width, and in the above-mentioned state, turn the cylinder tip half a turn in the opposite direction to loosen the screwing once, and leave a gap between the cylinder tip and the needle base. After that, the injection needle is once returned to the insertion opening, and then the common side of the plurality of companies on the opposite side so that the tapered portion of the wedge-shaped cross section of the removal groove comes into contact with the gap between the cylinder tip and the needle base. When the needle base removal groove is set in the groove for removing the needle base and slid to the tip thereof, the needle base removal groove has a tapered shape and has a taper that forms a steep angle toward the tip, so that a gap is formed. The taper between the inclined portion of the barrel and the upper surface of the needle base A force acts in the opening direction, and when the force reaches the distal end, the force is maximized, the loosely threaded tip of the barrel and the needle base are disengaged, and the injection needle drops by its own weight (1). )-(7)
Item 6. The disposable injection needle remover according to any one of the items above.

(9) When the detacher has a detachment groove for the same system and another system and a groove for half rotation of the needle base, the used same system and the other system screwed to the cylinder tip of the cartridge holder. Insert the needle base from any one of the above companies into the insertion opening of the remover from above, slide it toward the tip of each needle base half-rotation groove, and insert it into the needle base half-rotation groove for the same system. The octagonal portion at the lower part of the outer peripheral surface of the system needle base is fitted into the corresponding groove width of the needle base half-rotation groove, and the needle base outer peripheral surface of another system needle base is inserted into the needle base half-rotation groove of another system. After fitting the quadrangular part in the upper center into the corresponding groove width, loosening the screw once by rotating the cylinder tip in the opposite direction by half in the above state, and creating a gap between the cylinder tip and the needle base, Once the injection needle is returned to the insertion port, the tapered portion of each of the removal grooves has a gap between the cylinder tip and the needle base. Was set to abut on, it is slid up to its distal end,
The needle base removing groove is tapered and has a taper that forms a steep angle as it goes to the tip, so that the tapered portion gradually opens the gap between the inclined portion of the cylinder tip forming the gap and the upper surface of the needle base flange. (1), when the tip reaches the distal end portion, the force is maximized, the loose cylinder tip is unscrewed from the needle base, and the injection needle falls by its own weight. The disposable injection needle remover according to any one of the items (7) to (7). (10) When the remover has a common removal groove regardless of the system, and a needle base half-rotation groove for the same system and another system, the used system and other used by being screwed to the tip of the cartridge holder. Insert the needle base from one of the systems into the insertion port of the remover from above, slide it toward the tip of each needle base half-rotation groove, and into the needle base half-rotation groove for the same system, The octagonal portion at the lower part of the outer peripheral surface of the same system needle base is fitted into the corresponding groove width of the needle base half rotation groove, and the needle base of another system needle base is inserted into the needle base half rotation groove for another system. The square portion at the center upper part of the outer peripheral surface was fitted into the corresponding groove width, and in the above-mentioned state, the cylinder tip was half-turned in the opposite direction to loosen the screw once, and a gap was formed between the cylinder tip and the needle base. Thereafter, the injection needle is once returned to the insertion port, and the tapered portion of each of the above-mentioned removal grooves has a cylinder tip and a needle base. Was set to contact the clearance is slid up to its distal end,
Since the needle base removing groove has a tapered shape and a taper that forms a steep angle as it goes to the tip, a direction in which the tapered portion gradually opens between the inclined portion of the barrel that forms the gap and the upper surface of the collar of the needle base. (1), when the tip reaches the tip, the force is maximized and the gently disengaged tip of the barrel and the needle base are disengaged, and the injection needle falls by its own weight. The disposable injection needle remover according to any one of the items (7) to (7).

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The removal tool according to the present invention comprises a cartridge holder provided with a used injection needle,
After inserting into the half-rotation groove of the injection needle base of the remover and making a half turn, it is configured so that injection needles of different companies with different external dimensions can be easily removed simply by sliding into the removal groove. .

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a syringe needle detacher according to the present invention. FIG. 16 is an external view of an existing injection needle unit and a storage container. FIG. 16A shows a cap of the container, and FIG. 16B shows a storage container of the injection needle unit.
In the figure, 2 is a needle tube, 2a is a needle base, 2c is a flange, 2d is an upper portion of a flange, 2e is a lower portion of a flange, 13 is an injection needle unit storage container, 14 is a storage container needle cap, 20 is an injection needle,
Reference numeral 1 denotes an injection needle unit.

FIG. 15 is an external view of the injection needle unit before it is inserted into the cartridge holder. In the drawing, 1 is a cartridge holder, 1a is a cylinder tip, 1b is a male screw, 1c is an inclined portion of the cylinder tip, 1f is a holder upper convex part, 10 is a holder lower part, 11 is a cylinder tip through hole, 13a is a drawing direction of the container,
Reference numeral 15 denotes an insertion direction, and reference numeral 20a denotes a holder notch. Also,
Except for the male screw 1b (described later) of the tube tip 1a, the others are existing products.

FIG. 14 is a view in which the needle base is inserted into the cylinder end of the cartridge holder. Tube tip 1 of cartridge holder 1
In order to insert the needle base 2a into a, first, the above-mentioned FIG.
The needle cap 14 shown in the figure and the injection needle storage container 13 shown in the figure (b)
And disconnect. Next, as shown in FIG. 15, the injection needle 20 is advanced in the insertion direction 15 with respect to the cylinder tip 11a of the cartridge holder 1, and the male screw 1b of the cylinder tip is screwed into the female screw 1e of the needle base 2a (FIG. 1). Insert (described later). Thereafter, when the storage container 13 is pulled out in the drawing direction 13a (FIG. 15), the storage container 13 is inserted as shown in FIG.

[0013] In the above, the outer shape of the needle base is not uniform, and those having their own determined outer shape and coloring are commercially available. FIG. 13 shows an external view of the injection needle base of each company.
In the example, the target companies are N company, T company,
Company D, Company G, Company F, and four of them, N, T, D, and G, which share the same outer dimensions of the octagonal portion at the lower part of the outer circumference of the needle base. The company F, in which the central upper part of the outer peripheral surface of the needle base is square, was classified and described as another system.
In the figures, (a), (b), and (c) are manufactured by Company F,
(D), (e), (f) Figures are made by Company N, (g), (h),
(I) shows the products made by T company, (N), (L), (ヲ) shows the products made by D company, and (W), (F) and (Y) show the products made by G company. (A) is a plan view of the company F, (B) is a front view, (C)
The figure shows a bottom view, and the same applies to N, T, D and G companies. In the figure, 31a is a quadrangle, 31b, 31
c, 31d, 31e are octagons, 32 is an adhesive part, 33a,
33e indicates a cylindrical tip, and 33b, 33c and 33d indicate throttle groove-like tips.

However, although the outer shape of each needle differs from company to company, the shape of the female screw (1e) engraved on the inner wall of the needle base 2a (FIG. 1: described later) is common to each company depending on the standard. It is adapted to be screwed with the male screw 1b of the cylinder tip. In the above, the external dimensions relating to the present invention are as follows: the width of the rectangle 31a is 4 mm, and the octagon 31e
Is 6.5 mm, and the width of 31b, 31c, 31d is 7 mm, which can be commonly used. The outer diameter of the flange 2c is 7 mm for company F, 7.5 mm for company G, and 8.5 mm for others.
However, there is no problem in removing (described later), and they can be commonly used. Since the outer shape of the needle base 2a is different as described above, the size of the portion where the needle base 2a is set in the storage container 13 (FIG. 16) is also exclusive for each company, and the compatibility of the storage container 13 is set. There is no.

[0015] Therefore, the existing injection needles of different companies can be adapted to any of the external shapes, and the injection needle and the cartridge can be easily separated by a simple operation. The means that can be dropped and stored in the waste syringe storage container will be described below. FIG. 1 is a longitudinal sectional view of a male screw part of a cartridge holder cylinder tip and a female thread part of an injection needle base of the present invention. FIG. 1A is a longitudinal sectional view of a male thread part of a cartridge holder cylinder tip. The figure is a longitudinal sectional view of the female thread portion of the needle base. In the figure, 1e indicates a female screw, 7 indicates a cartridge, and 7a indicates a sealing body. As described above, the injection needle 20 is advanced in the insertion direction 15 with respect to the cylinder tip 1a of the cartridge holder 1 (FIG. 15), and the male screw 1b of the cylinder tip is screwed into the female screw 1e of the needle base 2a (FIG. 2). 14) The male screw 1b, which is screwed as shown in FIG. 14, is provided on the barrel 1a of the cartridge holder 1 of the present invention.

In the case of the ready-made one, the male screw is the needle base 2 shown in the figure (b).
A plurality of male screw threads are provided (not shown) so as to be screwed into the female screw 1e of FIG. 1A. It required a special removal tool that was rotated several times in reverse. In the present invention, as shown in FIG. 1 (a), the upper portion of the cylinder tip 1a is turned 0.7 to 1.8 turns (preferably 0.8 to 1.2 turns) of the male screw 1b. Only molded and arranged. Therefore, in order to insert and thread the cylinder tip 1a into the needle base 2a,
It only needs to be rotated 0.7-1.8. It is also easy to remove (described later). FIG. 2 is a vertical cross-sectional view in which a needle base is screwed into a cylinder tip. In the figure, 7b indicates an injection solution. As shown in the figure, at the time of insertion, the needle tube 2 penetrates the sealing body 7a through the through hole 11 and reaches the injection solution 7b. However, since the inner diameter of the needle tube 2 is very small, the needle tube 2 presses the injection solution 7b in the cartridge 7. The pressure of the sucker (not shown) is also slight, and there is no danger that the male screw 1b of the screwed needle base 2a will be detached even with the substantially single crest.

Next, a description will be given of the injection needle detacher that is inserted and screwed. FIG. 3 is an external view of a remover provided with a common removal groove and a needle base removal groove for each company.
(B) is a front view, (B) is a sectional view taken along line X-X ', (C)
The figure is a sectional view taken along the line ZZ '. In the drawing, 4 is a detacher, 4a is a screw of the detacher, 5 is an insertion opening of a detachment groove, 5a is a needle base detachment groove made by N company, T company, D company, F company, and G company, 5b is Groove for half rotation of needle base made by N, T and D companies, 5
c is a groove for half rotation of the needle base made by G company, 6b is a groove for half rotation of the needle base made by F company, 8 is a tapered portion of a groove for removing the needle base made by N company, T company, D company and F company, and G company. 8a is a taper of a gentle angle, 8b is a taper of a steep angle, and 18 is the thickness of the upper surface of the remover.

As shown in FIG. 3 (a), the remover 4 has a disk-like lid shape, and the upper part of the remover 4 is centered on the insertion opening 5 of the removal groove, and is provided by N company, T company and D company. Company F Company G
The needle base removal groove 5a made by the company, the needle base half-rotation groove 5b made by the N company, T company, and D company on the opposite side, and the needle base half rotation groove 5c made by the G company and the F company The needle base half rotation groove 6b is provided in a tapered groove shape. The needle base half-rotation groove 5b manufactured by Company N, Company T, and Company D is an octagon 3 of the needle base (FIG. 13).
The portions 1b, 31c, and 31d have the groove widths to be inserted as shown in FIG. 3C, and the needle half-rotation groove 5c manufactured by Company G on the extension is the same as that shown in FIG. 3) The octagon 31e portion of the needle base has a groove width to be inserted as shown in FIG. 3 (c), and the needle half-rotation groove 6b made by Company F at the distal end on the extension. (FIG. 13) As shown in FIG. 3C, the square 31a portion of the needle base has a groove width to be inserted. In the case, the needle base half-rotation grooves 5b, 5c and 6b are linearly connected and are tapered toward the distal end. 6b may be arranged stepwise.

Then, as shown in FIG.
The needle base removing groove 5a made by N company, T company, D company, N company, F company, and G company is tapered, and has a tapered portion 8 at the tip. Further, as shown in FIG. 3 (b), the angle of the taper is such that the side close to the insertion port 5 has a taper 8a having a gentle angle, and the taper 8b has a steep angle toward the tip. ing. Also, FIGS. 3 (a) and (b)
The threaded portion 4a of the detacher shown in FIG.
2, 3a). The material of the remover 4 is not particularly limited as long as it has durability, but a hard synthetic resin, a metal plate, or the like is preferable.

FIG. 5 is an external view of the detacher provided with a detachment groove for N company, T company, D company, G company and F company, and a needle base half-turn groove. 5, (a) is a front view, (b) is a sectional view taken along line XX ', and (c) is a view taken along line Z-.
6 is a cross-sectional view of FIG. 5, FIG. 6 is a cross-sectional view of FIG. 5A, and FIG. 6B is a cross-sectional view of FIG. In the figure, 5a 'indicates N company, T company, D company, G
6a is the needle base removal groove made by F company, 9a
Denotes a tapered portion of a groove for removing a needle base manufactured by Company F, 9a denotes a taper having a gentle angle, and 9b denotes a taper having a steep angle.

As shown in FIG. 5 (a), the remover 4 has a disk-like lid shape. The needle base removing groove 5a 'made by D / G company, and N / T / D
A needle base half-rotation groove 5b manufactured by Company G is provided, and a needle base removal groove 6a manufactured by Company F and a needle half-rotation groove 6b manufactured by Company F are provided on the opposite side to the groove 6a. It is arranged. N above
The tip of the needle-base half-rotation groove 5b manufactured by Sharp Corporation / T / D / G company is the octagon 31b / 31c / 3 of the needle base (FIG. 13).
As shown in FIG. 5 (c), the portions of 1d and 31e have the width of the groove to be inserted, and the tip of the needle half-rotation groove 6b manufactured by Company F is the same as that shown in FIG. 13) The square 31a portion of the needle base has a groove width to be inserted as shown in FIG.

Then, as shown in FIG.
The needle base removing groove 5a made by N company, T company, D company and G company is tapered, and has a tapered portion 8 at the tip. Further, as shown in FIG. 5 (b), the angle of the taper is such that the side close to the insertion port 5 has a taper 8a with a gentle angle, and the taper 8b with a sharp angle toward the tip end.
It has become. Similarly, the needle base removing groove 6a of Company F is also tapered, and the tip portion also has a taper portion 9 as shown in FIG. As for the angle of this taper, the side close to the insertion port 5 has a taper 9a with a gentle angle, and becomes a taper 9b with a steep angle toward the tip.

Next, the operation of separating the syringe needle 20 from the barrel 1a of the cartridge holder 1 by the detacher 4 having the structure shown in FIGS. 3, 4, 8 and 5 to 8 will be described. .

First, FIG. 4 shows N company, T company, D company, F company,
It is explanatory drawing of the remover provided with the common removal groove for G company, and the groove | channel for needle base half rotation, (a) figure is a front view, (b) figure is X.
FIG. 3C is a cross-sectional view of FIG. FIG.
A description will be given of an example of an operation of removing an injection needle manufactured by Company N based on the above. In the figure, 40 indicates a needle base of N company, and 50 and 51 indicate the sliding direction. As shown in FIG.
First, the used needle base 40 of the N company inserted into the cylinder tip 1a of the cartridge holder 1 is inserted from above into the insertion slot 5 of the removal groove of the remover 4, and the needle base half-rotation groove 5 is inserted.
b (FIG. 3A) in the sliding direction 50, and as shown in FIG. 4C, the octagon 31b of the N company needle base 40 (FIG. E) The part shown in FIG. 5) is fitted into the width of the needle base half-rotation groove 5b (FIG. 3A), and in this state, the cylinder tip 1a is turned half a turn in the reverse direction to loosen the screwing once. A gap is created between the tube tip 1a and the needle base 2a (needle base 40 of N company). The following figure shows this state. FIG. 9 is a view in which the cylinder tip is half-turned in the opposite direction to the needle base set in the half-turn groove. As shown,
When the barrel 1a is rotated half a turn in the opposite direction with respect to the needle base 2a (the needle base 40 of N company), the one-turn male screw 1b provided on the upper part of the outer periphery of the barrel 1a is attached to the inner wall of the needle base 2a. Because the screw thread advances in the provided female screw 1e in the retreating direction, the screwing is loosened, and a gap is generated between the cylinder tip 1a and the needle base 2a (the needle base 40 of N company). The half rotation is an operation that can be performed with a single touch, and a required gap is obtained between the barrel tip 1a and the needle base 2a. By making this state, the next removal operation becomes easy.

Next, the removal operation will be described. In FIG. 4A, the cartridge holder 1 and the injection needle 20 in a state where the screwing is loosened are moved to the needle base 2a (N
While returning in the sliding direction 50 toward the distal end of the removal groove 5a of the needle base 40), the distal end having the taper 8 is further slid in the sliding direction 51 (FIG. 3A). ) Is set as shown in FIG. The above operation is shown in the following figure. FIG. 10 shows a tube tip and a needle base set in a taper on the insertion port side. As shown, the taper 8a having a gentle angle close to the insertion port 5 at first.
Enters the gap between the cylinder tip 1a and the needle base 2a (the needle base 40 of N company). Then, slide toward the tip.

FIG. 11 is a view immediately before the screw is disengaged from the tube tip and the needle base, set near the distal end. As shown in the figure, the sliding groove 5
Since a is tapered toward the tip and the tapered portion 8 is a steeply tapered portion 8b, the inclined portion 1c of the cylinder tip 1a and the needle base 2a (the needle base 40 of N company)
The tapered portion 8 located between the upper surfaces 2d of the flanges 2c of the slab 2c, a force acts in a direction to gradually open between the cylinder tip 1a and the needle base 2a,
The force is at its maximum when it reaches the tip.

As described above, in the initial half-rotation state setting, the screwing is already loose, and the cylinder tip 1a and the needle base 2a
Since the above-mentioned slide operation is performed in a state where a gap is formed between the needle tip 40 and the (needle base 40 of the N company), the tip is provided around the upper end of the cylinder tip 1a by the pressing force of the taper when reaching the tip. Male screw 1b for one rotation and needle base 2a
The screw engagement with the uppermost female screw 1e provided on the inner wall of (the needle base 40 of N company) is easily released by elasticity. Therefore, the cylinder tip 1a and the needle base 2a can be easily separated only by the sliding operation. While the above description has been made with respect to the injection needle manufactured by Company N, the removal operation is the same for products manufactured by Company G or Company F having different outer dimensions.

In the case of the company G, as shown in FIG. 4A, the octagon 31 of the needle base 41 of the company G (figure 13 of FIG. 13).
Since the groove width of e is 5c (FIG. 3A), the N
Move it to the tip from the company's product, insert it into the groove and rotate. Further, in the case of the needle base manufactured by the company F, as shown in FIG. 4A, the used needle base 42 of the company F inserted into the cylinder tip 1a of the cartridge holder 1 is first removed from the remover 4. It is inserted from above into the position of the insertion slot 5 of the removal groove, passes through the needle base half-rotation grooves 5b and 5c, and slides toward the needle base half-rotation groove 6b (FIG. 3A) at the tip thereof. Slide in the direction 50. FIG. 8 is a cross-sectional view common when the needle base for company F is inserted in FIGS. 4 and 7 (described later). In the case of FIG. 4, FIG. 8 (E) is the same as FIG. In the figure, Z when the needle base 42 of Company F is inserted is shown.
FIG. 4 is a sectional view taken along the line XX ′ of FIG. Then, as shown in FIG.
The part of the square 31a of the needle base 42 of the company F is fitted into the width of the needle base half-rotation groove 6b (FIG. 3A), and in this state, the cylinder tip 1a is rotated half a reverse direction to rotate the screw Once loosened,
A gap is created between the tube tip 1a and the needle base 2a.

In the case of FIG. 7, FIG. 8D shows a sectional view taken along the line YY 'of FIG. 7, and FIG. 8E shows a sectional view of FIG. FIG. 4 shows a cross-sectional view along A ′. Then, as described above, in the initial half-rotation state setting, in a state where the screwing is already loose and a gap is formed between the cylinder tip 1a and the needle base 2a (the needle base 42 of F company), As shown in FIG. 8 (d), the needle base 4 of the N company is used.
When the same sliding operation as that described above is performed to reach the distal end of the tapered portion 8, the male screw 1b for one rotation provided around the upper portion of the cylinder tip 1a and the needle base 2a are pressed by the pressing force of the taper.
The screw engagement with the uppermost female screw 1e provided on the inner wall of (the needle base 41 of Company F) is easily released by the elasticity. Therefore, the cylinder tip 1a and the needle base 2a are easily separated only by the next sliding operation.

Next, the removers are N company, T company, D company,
A detaching operation using a detacher provided with a detachment groove for Company G and Company F and a groove for half rotation of the needle base will be described. As shown in FIG. 5, this system has two systems of removal grooves for N company, T company, D company, G company, and F company, and needle base half-turn grooves intersecting each other. In the example, the vertical direction is used for N company, T company and DG company, and the horizontal direction is used for F company. Compared with the preceding paragraph, the target remover has two grooves having different groove widths of the needle-base half-rotation groove, and has two removal grooves. In FIG. 5, the groove width 5c of FIG.
And 5b are commonly used. FIG. 7 shows N company, T company, D company,
It is explanatory drawing of the remover provided with the removal groove | channel for company G and the company F, and the groove | channel for needle base half rotation, (a) is a front view when an injection needle is set, (b) is N X when the company's injection needle is slid into the tapered base of the needle base removal groove
The -X 'cross-sectional view and (C) are ZZ' cross-sectional views when the injection needle manufactured by Company N is inserted into the needle base half-turn groove. In the drawing, 52 and 53 indicate the sliding directions of the needle base of the F company. As described above, in the case of FIG. 7, FIG. 8 (e) shows a sectional view taken along the line AA 'of FIG. 7, and FIG. 8 (d) shows a sectional view taken along the line YY' of FIG.

As shown, the needle base 4O (T
First, the needle bases 42 of Company F and Company D) and Company F are set in the grooves 5b and 6b (FIG. 5 (a)) for half rotation, respectively, and rotated half a turn to loosen the screwing. And then the removal groove 5
a ′ and 6a, and slide the tip of the cylinder 1a.
The operation for separating the needle base 2a is the same as that in the previous section. In this instrument, since the two systems are separated, the operation section is clear and easy to operate.

Further, only the half-rotation groove may be formed into two systems, and the removal groove may be a Y-shaped or T-shaped removal device common to the entire company (not shown).

As described above, according to the present detacher,
Insert the disposable injection needle screwed into the cartridge holder into the half-rotation groove, rotate it half a turn, and then slide it into the tapered portion, and the outside dimensions of F, N, T, D
In response to disposable injection needles of companies G and G,
Can be easily removed.

FIG. 12 is an external view and a partial sectional view when the injection needle is dropped into the waste needle storage container. In the figure, reference numeral 3 denotes a disposal needle storage container, 3a denotes a threaded portion of the storage container, 3b denotes a flange of the storage container, 25 denotes a falling direction, and 26 denotes a pulling direction. As shown, the separated needle base 2a
Is dropped to the bottom of the storage container 3 in the falling direction 25 by its own weight, and is stored at the bottom of the discarded needle storage container 3. In addition, the screwing portion 4a of the detacher and the screwing portion 3a of the storage container are aligned and rotated, so that both can be easily attached and detached. The flange 3b of the storage container serves both as a reinforcement and a stopper. The material for the disposal needle storage container is not particularly limited as long as it is suitable for the detacher. Then, after the needle base 2a falls, the cartridge holder 1 may be pulled up in the lifting direction 26.

[0035]

According to the present invention, the following excellent effects are exhibited. According to the first and second aspects of the present invention, the tip of the cartridge holder for the disposable injection needle cartridge is
At the upper part, 0.7 to 1.8 turns, preferably (0.8 to 1.2 turns), which are screwed into the internal thread of the needle base inner wall of the ready-made injection needle.
Since it is provided with a male screw, it is extremely easy to screw it in and out, and it can be applied to injection needles of a plurality of companies having different outer dimensions. According to a second aspect of the present invention, there is provided a disposable needle remover screwed to the cartridge holder according to the first aspect of the present invention, comprising a lid-like removal plate and a disposal needle detachably attached to a lower portion thereof. A storage container, wherein the detachment plate has, at a central portion thereof, a cylinder tip of the screwed cartridge holder and an insertion port through which an injection needle can be easily inserted, and at least a cartridge extending outward from the insertion port. A long groove for needle base removal with a groove width that is reduced to the outer diameter of the cylinder tip of the holder is extended, and the plate portions on both sides of the long groove are formed in a wedge-shaped cross section, so the outer dimensions differ with a very simple operation The disposable injection needle can be removed from any of a plurality of companies, and the separated waste needle is dropped and stored in a storage container, so that it is easy to handle. According to the third and fourth aspects of the present invention, the needle base removing long groove according to the preceding claim extends, and a needle having a width which is the same as or slightly smaller than the outer diameter of the needle base abdominal portion in a direction opposite to the removing long groove. Since the base half-rotation long groove is provided, the screw is loosened once by the needle base half-turn groove, and then any disposable injection needle can be removed by a simple operation of sliding into the removal groove. According to the invention of claim 5, the long groove for removing the needle base of the disposable injection needle of another system and the needle base half of the disposable injection needle of the other system in the opposite direction from the insertion port outward. Since the long grooves for rotation are arranged close to each other and the two systems are separated, the operation section is clear and easy to operate.

According to the fifth and sixth aspects of the present invention, the needle-base half-turn groove of the same system has a groove width in which an octagonal portion at the lower part of the outer peripheral surface of the needle base is inserted. The tip of the needle base half-rotation groove has a groove width into which a square portion at the upper center of the outer peripheral surface of the needle base is inserted. Can be loosened once,
The next removal operation can be easily performed. According to the sixth and seventh aspects of the present invention, the needle base removing groove common to a plurality of companies irrespective of the type of system is tapered and its tip has a tapered portion with respect to the surface of the remover. In addition, the taper angle has a taper of a gentle angle on the side close to the insertion port of the groove, and a taper of a sharp angle is formed as it goes to the tip end portion. After setting a tapered portion close to the insertion port in the gap between the needle and the needle base, the gap can be enlarged by sliding toward the distal end, and the screwing can be easily removed.

According to the seventh and eighth aspects of the present invention, in the case where the remover has a common remover and a groove for half rotation of the needle base common to each company, the needle base made by any one company regardless of the system is removed. Insert the needle base from above into the insertion opening of the container and slide it toward the tip of the needle base half-rotation groove. Fit into the groove width, or, in case of a needle base made by another company, advance the slide to the tip of the groove for half rotation,
The square part at the center upper part of the outer peripheral surface of the needle base was fitted into the corresponding groove width, and then the cylinder tip was half-turned in the opposite direction to loosen the screw once, and a gap was formed between the cylinder tip and the needle base. Thereafter, the injection needle is temporarily returned to the insertion port, and then the tapered portion of the removal groove is set in the opposite needle-manufacturing groove for common needle making so that the tapered portion of the groove comes into contact with the gap between the cylinder tip and the needle base. , When it is slid to its tip, the force gradually works in the opening direction due to the tapered portion of the needle base removal groove, and when it reaches the tip, the force becomes maximum and the loose threading of the cylinder tip and the needle base becomes Since the syringe needle comes off and falls under its own weight, a series of removal operations can be easily performed.

According to the eighth and ninth aspects of the present invention, in the case where the detacher has a detachment groove and a needle base half-turn groove for a plurality of companies in the same system and for other companies, Insert a needle base from one of the companies into the insertion port of the remover from above, slide it toward the tip of each needle base half-turn groove, and rotate the needle base half-turn for multiple companies of the same system. The octagonal part at the lower part of the outer peripheral surface of the needle base of the same system is fitted into the corresponding groove width of the needle base half-rotation groove, and the needle base half-rotation groove for another system company Then, the square part at the center upper part of the needle base outer surface of the needle base manufactured by another system company is fitted into the corresponding groove width, and in this state, the cylinder tip is half-turned in the reverse direction to loosen the screwing once, and the cylinder tip and the needle After a gap has been created between the base and the base, the injection needle is once returned to the insertion port, and the tapered portions of the respective removal grooves are When it is set so that it contacts the gap between the needle base and it slides to its tip, the force gradually works in the opening direction by the tapered part of the needle base removal groove, and when it reaches the tip, the force is It becomes maximum, and the loose cylinder tip and the needle base are disengaged from each other, and the injection needle falls by its own weight. Therefore, the operation section is separated into two systems, and it is clear and easy to operate.

According to the ninth and tenth aspects of the present invention, the remover has a common removal groove for a plurality of companies regardless of system and a needle base half-rotation groove for a plurality of companies of the same system and other companies. In this case, insert a needle base from one of a plurality of companies of the same system or another company into the insertion port of the remover from above and slide it toward the tip of each needle base half-turn groove. Fit the octagonal part of the lower part of the outer circumference of the needle base made by the company into the corresponding groove width of the needle base half-turn groove, and the needle base half-turn for other systems. Fit the square part of the needle base made by the company in the center upper part of the outer circumference of the needle base into the corresponding groove width, and in the above state, turn the cylinder half a half turn in the reverse direction to loosen the screwing once, After a gap is created between the needle and the needle base, the injection needle is once returned to the insertion port, and the When the part is set so as to abut the gap between the cylinder tip and the needle base and is slid to its tip, a force is gradually exerted in the opening direction by the tapered part of the needle base removal groove, and the tip is reached. When the force becomes maximum, the loose cylinder tip and the needle base are disengaged from each other,
Since the injection needle falls by its own weight, it can be easily operated by forming a simple Y-shaped or T-shaped groove.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a male thread portion of a cartridge holder cylinder tip and a female thread portion of a syringe needle base of the present invention.

FIG. 2 is a longitudinal sectional view in which a needle base is screwed into a cylinder tip.

FIG. 3 is an external view of a remover provided with a removal groove and a needle base removal groove common to various companies.

FIG. 4 is an explanatory view of a remover provided with a common removal groove for the N company, T company, D company, G company, and F company, and a groove for half rotation of the needle base.

FIG. 5 is an external view of a detachment device provided with removal grooves for N company, T company, D company, G company, and F company, and a needle base half-turn groove.

FIG. 6 is a sectional view of FIG. 5;

FIG. 7 is an explanatory view of a remover provided with a removal groove for N company, T company, D company, G company, and F company, and a groove for half rotation of the needle base.

FIG. 8 is a sectional view when the needle base for company F is inserted into FIGS. 4 and 7;

FIG. 9 is a view in which the tip of the cylinder is half-turned in the opposite direction to the needle base set in the groove for half-turn.

FIG. 10 is a diagram showing a cylinder tip and a needle set in a taper on the insertion port side.

FIG. 11 is a view set immediately before the tip end and just before the threaded connection between the tube tip and the needle base is released.

FIG. 12 is an external view and a partial cross-sectional view when the injection needle is dropped into a waste injection needle storage container.

FIG. 13 is an external view of an injection needle base of each company.

FIG. 14 is a view in which a needle base is inserted into a cylinder tip of a cartridge holder.

FIG. 15 is an external view showing a state before an injection needle unit is inserted into a cartridge holder.

FIG. 16 is an external view of an existing injection needle unit and a storage container.

[Explanation of symbols]

1: cartridge holder 1a: cylinder tip 1b: male thread 1c: inclined part of cylinder tip, 1e: female thread
1f: Holder upper convex part 2: Needle tube 2a: Needle base 2c: Flange 2d: Upper part of flange 2e: Lower part of flange 3: Discarded needle storage container 3a: Threaded part of storage container 3b: Flange of storage container 4: Removal Vessel 4a: Screw for removing device 5: Insertion slot for removing groove 5a: Groove for removing needle base made by N company, T company, D company, G company, F company 5a ': N company, T company, D company, Groove for removing the needle base made by G company 5b: Groove for half rotation of the needle base made by N company, T company, and D company 5c: Groove for removing the needle base made by G company 6a: The needle base removing groove made by F company 6b: The needle base made by F company Groove for half rotation 7: Cartridge 7a: Sealing body 7b: Injection solution 8: Tapered portion of needle base removal groove made by N, T, D, G company 8a: Tapered at a gentle angle 8b: Tapered at a sharp angle 9: Tapered portion of needle base removal groove made by F company 9a: Tapered at a gentle angle 9b: Tapered at a steep angle 10: Lower part of holder 11: Cylinder tip through hole 13: Injection needle unit storage container 13a: Container withdrawal direction 14: Storage container needle cap 15: Insertion direction 18: Remover top plate thickness 20: Injection needle 20a: Holder notch 21: Injection needle unit 25: Falling direction 26: Lifting direction 31a: 4
Squares 31b, 31c, 31d: Octagonal 32: Adhesive part 33a: Cylindrical tip 33b, 33c, 33d: Squeezing groove-like tip 40: Needle base of N company 41: Needle base of G company 42: Needle base of F company 50 , 51, 52: sliding direction 52, 5
3: Sliding direction

[Procedure amendment]

[Submission date] June 1, 2000 (2006.1)

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of Invention] Di scan Pozaburu injection needle cartridge holder and the needle detacher

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

Means for Solving the Problems The present inventor has solved this problem by the following means as a result of intensive studies in view of the above. (1) Di scan Pozaburu cylindrical tip of the injection needle cartridge holder, be provided with 0.7 to 1.8 round of the male thread to be screwed into the female thread of the needle hub inner wall of the ready-made needle thereon easy de-scan Pozaburu injection needle cartridge holder needle removal, wherein. (2) Di scan Pozaburu cylindrical tip of the injection needle cartridge holder, be provided with 0.8 to 1.2 round of the male thread to be screwed into the female thread of the needle hub inner wall of the ready-made needle thereon easy de-scan Pozaburu injection needle cartridge holder needle removal, wherein. (3) (1) or (2) a detacher di scan Pozaburu needle screwed to the cartridge holder according to claim, and a lid-shaped removable plate, which is removably attached to its lower portion The detachable plate has a cylindrical tip of the screwed cartridge holder and an insertion port through which the injection needle can be easily inserted, and is provided outward from the insertion port. A disposable injection, characterized in that a long groove for removing a needle base having a groove width tapering at least to the outer diameter of the cylinder tip of the cartridge holder is extended toward the cartridge holder, and plate portions on both sides of the long groove are formed in a wedge-shaped cross section. Needle remover.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005] (4) (1) A or (2) of di scan Pozaburu detacher needle screwed to the cartridge holder described, the lid-shaped removable plate, preparative detachably thereunder It consists of a storage container for the worn injection needle,
The detaching plate has, at the center thereof, a cylinder tip of the cartridge holder screwed and an insertion port through which an injection needle can be easily inserted, and from the insertion port outward to at least a cylinder tip outer diameter of the cartridge holder. A long groove for needle base removal with a groove width to be reduced is extended, and plate portions on both sides of the long groove are formed in a wedge-shaped cross section, and in the opposite direction to the long groove for removal, the outer diameter of the needle base abdomen and A disposable injection needle remover, wherein a long groove for half rotation of the needle base having the same or slightly narrower width is provided. (5) The long groove for removing the needle base of the disposable injection needle of another system and the long groove for half rotation of the needle base of the disposable injection needle of the other system in the opposite direction are arranged outward from the insertion port. (4)
Item 6. The disposable injection needle remover according to Item 1. (6) The needle base half-rotation groove of the same system has a groove width into which an octagonal portion at the lower part of the outer peripheral surface of the needle base is inserted. , 4 in the upper center of the outer peripheral surface of the needle base
The disposable injection needle remover according to any one of items (1) to (5), wherein the disposable injection needle remover has a groove width into which the rectangular portion is inserted.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

[0035]

According to the present invention, the following excellent effects are exhibited. 1, according to the invention of claim 1, 2 of the present invention, the cylindrical tip of di scan Pozaburu injection needle cartridge holder is screwed into the female screw of the needle base inner wall of the ready-made needle thereon 0.7 1.8 rounds (preferably 0.8 to 1.2 rounds) of external threads are provided, making it extremely easy to screw in and out, and applicable to any number of injection needles with different external dimensions. it can. 2, a detacher di scan Po <br/> Zaburu needle screwed into the cartridge holder in the preceding paragraph, wherein, according to the invention of claim 3, and a lid-shaped removable plate, removably thereunder The detachable plate has an insertion port at the center of which the cylinder tip of the screwed cartridge holder and an insertion port through which an injection needle can be easily inserted. A needle-base removal long groove with a groove width that contracts at least to the outside diameter of the cartridge holder at least to the outside extends, and the plate portions on both sides of the long groove are formed in a wedge-shaped cross section, making it very simple. also can be removed for several companies either di scan Pozabu <br/> Le needles having different outer dimensions at Do operation, since the separated waste needle is dropped stored in the container, it is easy to handle . According to the third and fourth aspects of the present invention, the needle base removing long groove according to the preceding claim extends, and a needle having a width which is the same as or slightly smaller than the outer diameter of the needle base abdominal portion in a direction opposite to the removing long groove. Since the base half-rotation long groove is provided, the screw is loosened once by the needle base half-turn groove, and then any disposable injection needle can be removed by a simple operation of sliding into the removal groove. According to the invention of claim 5, the long groove for removing the needle base of the disposable injection needle of another system and the needle base half of the disposable injection needle of the other system in the opposite direction from the insertion port outward. Since the long grooves for rotation are arranged close to each other and the two systems are separated, the operation section is clear and easy to operate.

Claims (10)

[Claims] 1. A cylindrical tip of a cartridge holder for a disposable injection needle is provided with a male screw for 0.7 to 1.8 turns screwed into a female screw on a needle base inner wall of a ready-made injection needle at an upper portion thereof. A cartridge holder for a disposable injection needle, wherein the injection needle is easily removed. 2. A cylinder tip of a cartridge holder for a disposable injection needle is provided with a male screw for 0.8 to 1.2 turns screwed into a female screw on a needle base inner wall of a ready-made injection needle at an upper portion thereof. A cartridge holder for a disposable injection needle, wherein the injection needle is easily removed. 3. A disposable injection needle remover screwed to the cartridge holder according to claim 1 or 2, comprising a lid-like detaching plate and a discarding injection needle detachably attached to a lower portion thereof. A storage container, wherein the detachment plate has, at a central portion thereof, a cylinder tip of the screwed cartridge holder and an insertion port through which an injection needle can be easily inserted, and at least a cartridge extending outward from the insertion port. A disposable injection needle remover, characterized in that a long groove for removing a needle base having a groove width that is reduced to the outer diameter of the cylinder tip of the holder extends, and plate portions on both sides of the long groove are formed in a wedge-shaped cross section. 4. A disposable injection needle remover screwed to the cartridge holder according to claim 1 or 2, comprising a lid-like detaching plate and a waste injection needle detachably attached to a lower portion thereof. A storage container, wherein the detachment plate has, at a central portion thereof, a cylinder tip of the screwed cartridge holder and an insertion port through which an injection needle can be easily inserted, and at least a cartridge extending outward from the insertion port. A long groove for needle base removal having a groove width that is reduced to the outer diameter of the cylinder tip of the holder is extended, and plate portions on both sides of the long groove are formed in a wedge-shaped cross section, and in a direction opposite to the long groove for removal, A disposable needle removing device comprising a needle base half-turn long groove having the same or slightly smaller width as the outer diameter of the needle base abdomen. 5. A long groove for removing the base of a disposable injection needle of another system and a long groove for half rotation of a needle base of the disposable injection needle of the other system in the opposite direction from the insertion port outward. 5. The disposable injection needle remover according to claim 4, wherein the disposable injection needle remover is disposed. 6. A needle base half-rotation groove of the same system has a groove width into which an octagonal portion at a lower portion of an outer peripheral surface of the needle base is inserted, and
The tip end of the needle base half-rotation groove of another system has a groove width into which a quadrangular portion at the center upper part of the outer peripheral surface of the needle base is inserted. 2. The disposable injection needle remover according to claim 1. 7. A taper angle of a plate portion formed in a wedge-shaped cross-section on both sides of a needle base removing long groove applicable to the needle bases of all the systems is loose on a side close to an insertion opening of the groove, and is provided at a tip end. The disposable needle removing device according to any one of claims 1 to 6, wherein the disposable needle removing device is formed at a steep angle as it goes. 8. When the remover has a common remover for each system and a groove for half rotation of the needle base, the needle base of one of a plurality of used companies screwed into the cylinder tip of the cartridge holder. Is inserted into the insertion opening of the remover from above, and is slid toward the tip of the needle base half-rotation groove. In the case of a needle base of another system, advance the slide to the tip of the groove for half-turn, and fit the square part at the center upper part of the outer peripheral surface of the needle base into the corresponding groove width. After the tip of the barrel is turned half a turn in the opposite direction to loosen the screw once, a gap is created between the tip of the barrel and the needle base, and then the injection needle is returned to the insertion port, and then the wedge of the removal groove is formed. So that the tapered portion of the cross section abuts the gap between the cylinder tip and the needle base. When set in the groove for removing the needle base common to a plurality of companies on the opposite side and slid to the tip thereof, the groove for removing the needle base has a tapered shape and a taper that forms a steep angle toward the tip. Because of this, a force acts in the direction of gradually opening the tapered portion between the inclined portion of the cylinder tip forming the gap and the upper surface of the collar of the needle base, and when reaching the tip end, the force is maximized and the gentle cylinder tip and the needle The disposable injection needle remover according to any one of claims 1 to 7, wherein a screw engagement with the base is released, and the injection needle falls by its own weight. 9. When the remover has a removal groove and a needle base half-rotation groove for the same system, another system, and a used same system and another system screwed to the tip of the cartridge holder. Insert the needle base from one of the manufacturers from above into the insertion opening of the remover, slide it toward the tip of each needle base half-rotation groove, and insert it into the needle base half-rotation groove for the same system. The octagonal portion at the lower part of the outer peripheral surface of the needle base is fitted in the corresponding groove width of the needle base half-rotation groove. Insert the upper quadrangular part into the corresponding groove width, rotate the cylinder tip halfway in the reverse direction in the above state, loosen the screw once, and create a gap between the cylinder tip and the needle base. Return the injection needle to the insertion port, the tapered portion of each of the removal grooves, the gap between the cylinder tip and the needle base When the needle base removal groove is set so as to come into contact with the tip end and is slid to the tip end thereof, the needle base removing groove has a tapered shape and has a taper that forms a steep angle as it goes to the tip end. A force acts in a direction gradually opening due to the tapered portion between the portion and the upper surface of the collar of the needle base. When the force reaches the distal end portion, the force is maximized, and the loose cylinder tip and the needle base are disengaged from each other, and the injection needle is disengaged. The disposable injection needle remover according to any one of claims 1 to 7, wherein the needle falls by its own weight. 10. When the remover has a common removal groove regardless of the system, and a needle base half-rotation groove for the same system and another system, the used same system screwed to the tip of the cartridge holder. And a needle base from one of the other systems is inserted into the insertion opening of the remover from above and slid toward the tip of each needle base half-rotation groove, and the needle base half-rotation groove for the same system Then, the octagonal portion at the lower part of the outer peripheral surface of the same system needle base is fitted into the corresponding groove width of the needle base half-rotation groove.
The square part at the center upper part of the outer peripheral surface of the needle base is fitted into the corresponding groove width, and in the above state, the cylinder tip is half-turned in the reverse direction to loosen the screwing once, and a gap is generated between the cylinder tip and the needle base. After that, once the injection needle is returned to the insertion port, the tapered portion of each of the removal grooves is set so as to be in contact with the gap between the cylinder tip and the needle base, and slid until reaching the tip portion, The needle base removing groove is tapered and has a taper that forms a steep angle as it goes to the tip, so that the tapered portion gradually opens the gap between the inclined portion of the cylinder tip forming the gap and the upper surface of the needle base flange. The force acts on the tip, and when the tip reaches the tip, the force is maximized, the loose engagement between the barrel tip and the needle base is released, and the injection needle falls by its own weight, wherein the injection needle falls by its own weight. 8. The disposable injection according to any one of 7 above. Removal device.