JP5934367B2 - Syringe flange member - Google Patents

Description

  The present invention relates to a syringe flange member, and more particularly, to a syringe flange member that is attached to an outer cylinder and assists syringe operation.

Conventionally, vaccines and the like are often administered by subcutaneous injection. When subcutaneous injection is performed, the patient's drug administration site is picked up, and the foot of the picked-up drug administration site is at an angle of about 30 degrees. The needle is punctured and the pusher of the syringe is pushed to inject the drug into the body. The reason why the puncture angle of the injection needle is about 30 degrees is to prevent the tip of the injection needle from reaching the muscle tissue.
However, puncturing with a tilted injection needle tends to make the posture of the syringe unstable, and the softness of the skin varies depending on the individual patient, so that the tip of the injection needle reliably reaches the subcutaneous tissue. It took experience.

  Therefore, Patent Literature 1 discloses a puncture adjusting tool that can adjust the puncture depth of an injection needle. This puncture adjusting tool is formed of a cylindrical body, and is used by fitting the base end portion into the hub of the injection needle while the injection needle is passed through the inside. For example, the tip of the injection needle protrudes by a predetermined length from the tip of the cylindrical body, and the injection needle is punctured substantially perpendicularly to the skin until the tip of the cylindrical body contacts the skin. A target puncture depth can be realized by inserting a needle. This makes it possible to perform subcutaneous injection with the tip of the injection needle reliably reaching the subcutaneous tissue.

JP 2000-37456 A

In general, administration of drugs by injection is performed in principle by doctors and nurses, but for chronic diseases such as rheumatism and diabetes, self-injection that patients themselves inject at home may be performed. Even during self-injection, the puncture adjustment tool described in Patent Document 1 is effective.
However, for patients who are handicapped due to illness, elderly age, etc., even if the puncture adjustment tool is used, the posture of the syringe becomes unstable and the needle is punctured almost perpendicularly to the skin. May be difficult to do.
Also, usually, the base end portion of the outer cylinder is formed with a flange for placing a finger when pushing the pusher. Particularly, in the case of a glass syringe, the base end portion of the outer cylinder is heated and softened. Since the flange is formed, the flange is often small.
For this reason, the operation of pushing the pusher may be difficult for a handicapped patient.

  This invention is made in order to eliminate such a conventional problem, and it aims at providing the flange member for syringes which can improve the operativity of a syringe.

A flange member for a syringe according to the present invention is a flange member for a syringe that is detachably attached to an outer cylinder of a syringe to which an injection needle is attached to a distal end portion, and is a first member for fitting to the distal end portion of the outer cylinder. A fitting portion, a second fitting portion for fitting to the proximal end portion of the outer cylinder, a flange portion connected to the first fitting portion and the second fitting portion, When attached to the distal end portion of the outer cylinder using the first fitting portion, the flange portion is an auxiliary tool for puncturing the injection needle, and is attached to the proximal end portion of the outer cylinder using the second fitting portion. when it is, the Ri Do the aid when the flange grips the outer tube, the tip of the needle from the flange portion by fitting the first fitting portion at the distal end of the outer cylinder protrudes, the second fitting portion is fitted to the proximal end of the barrel by engaging the outer cylinder flange formed on the proximal end of the outer tube match It is intended.

Preferably, the first fitting portion is formed at the distal end portion of the outer cylinder and is engaged with the distal end portion of the outer cylinder by engaging with the cylindrical tip portion to which the injection needle is attached, and the flange portion is When the fitting portion is fitted to the distal end portion of the outer cylinder, there is a slit that allows the distal end of the injection needle to protrude by a predetermined length through the injection needle.
Moreover , it is preferable that the 1st fitting part and the said 2nd fitting part have an opening part fitted from the direction substantially perpendicular | vertical to the axial direction of an outer cylinder with respect to an outer cylinder, respectively. In this case, the opening part of the first fitting part and the opening part of the second fitting part can be configured to face in the same direction, in opposite directions, or in directions orthogonal to each other.

Moreover, it can divide | segment into the 1st division member which has a 1st fitting part, and the 2nd division member which has a 2nd fitting part, A flange part is the 1st division member formed in the 1st division member. You may comprise so that it may divide | segment into the 1st division | segmentation flange part and the 2nd division | segmentation flange part formed in the 2nd division member.
The first fitting portion has a cap detachment portion for separating and removing the injection needle protection cap attached to the distal end portion of the outer cylinder when the first fitting portion is fitted to the distal end portion of the outer cylinder. It can also be configured.

  According to this invention, when the first fitting portion is used to attach to the distal end portion of the outer cylinder of the syringe, the flange portion becomes an auxiliary tool for puncturing the injection needle, and the second fitting portion is used. When attached to the proximal end portion of the outer cylinder of the syringe, the flange portion becomes an auxiliary tool for gripping the outer cylinder, so that the operability of the syringe can be improved.

It is a perspective view which shows the flange member for syringes which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the syringe with which the flange member for syringes of Embodiment 1 is mounted | worn. It is a perspective view which shows the syringe with which the flange member for syringes of Embodiment 1 was mounted | worn with the front-end | tip part of the outer cylinder. It is a front view which shows the syringe with which the flange member for syringes of Embodiment 1 was mounted | worn with the front-end | tip part of the outer cylinder. It is a perspective view which shows the syringe with which the flange member for syringes of Embodiment 1 was mounted | worn with the base end part of the outer cylinder. It is a front view which shows the syringe with which the flange member for syringes of Embodiment 1 was mounted | worn with the base end part of the outer cylinder. It is the perspective view which looked at the flange member for syringes which concerns on Embodiment 2 from diagonally forward. It is the perspective view which looked at the flange member for syringes concerning Embodiment 2 from diagonally back. FIG. 10 is a perspective view showing a syringe flange member according to a modification of the second embodiment. It is a perspective view which shows the flange member for syringes which concerns on the other modification of Embodiment 2. FIG. 6 is a perspective view showing a syringe flange member according to Embodiment 3. FIG. 10 is a perspective view showing a first divided member included in a syringe flange member according to Embodiment 3. FIG. It is a perspective view which shows the 2nd division member contained in the flange member for syringes which concerns on Embodiment 3. FIG. It is a perspective view which shows the state which connected the 1st division member and 2nd division member which comprise the flange member for syringes which concerns on Embodiment 3 toward the mutually opposite direction. It is a perspective view which shows the flange member for syringes which concerns on Embodiment 4. FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows a syringe flange member 1 according to the first embodiment. The syringe flange member 1 is detachably attached to the outer cylinder of the syringe, and includes a first fitting portion 11 and a second fitting portion 12 formed integrally with the first fitting portion 11. And a substantially rectangular flat plate-shaped flange portion 13 formed integrally with the first fitting portion 11 and the second fitting portion 12.

  The 1st fitting part 11 has the fitting member 14 of the predetermined | prescribed height for accommodating the front-end | tip part of the outer cylinder of a syringe. The fitting member 14 has a saddle shape with a U-shaped cross section extending along a central axis Z substantially perpendicular to the flange portion 13, and a direction A perpendicular to the central axis Z is formed by an open portion of the flange. An opening 11a of the first fitting portion 11 facing is formed. A plurality of engagement frames 15 each having a U-shaped planar shape are formed inside the fitting member 14, and one end of the fitting member 14 in the central axis Z direction is opened to receive the outer cylinder of the syringe. At the other end in the central axis Z direction, a slit 16 through which the syringe needle is passed is formed.

  The second fitting portion 12 has a pair of fitting walls 17 arranged in parallel to each other and disposed adjacent to the opening portion 11a of the first fitting portion 11 for accommodating the outer cylinder of the syringe. ing. Each fitting wall 17 extends from the opening 11 a of the first fitting portion 11 along the direction A, and the opening 11 a of the first fitting portion 11 is interposed between the pair of fitting walls 17. Similarly to the above, an opening 12a facing in the direction A is formed.

The flange portion 13 includes a first flat plate 18 and a second flat plate 19 that are arranged in parallel with each other with a predetermined gap therebetween, and the first flat plate 18 and the fitting member 14 of the first fitting portion 11. And the pair of fitting walls 17 of the second fitting portion 12 are formed integrally with each other.
Between the first flat plate 18 and the second flat plate 19, when the syringe flange member 1 is attached to the proximal end portion of the outer cylinder of the syringe, an outer cylinder flange formed at the proximal end portion of the outer cylinder is provided. A gap 20 to be fitted is formed.
Further, the second flat plate 19 is formed with a slit 21 through which the syringe needle is passed when the syringe flange member 1 is attached to the distal end of the outer cylinder of the syringe, and the syringe flange member 1 is attached to the syringe. A notch 22 is formed through which a pusher of a syringe is passed when being attached to the proximal end of the outer cylinder.

  In addition, the fitting member 14 and the engagement frame 15 of the first fitting portion 11 have a size suitable for fitting to the distal end portion of the outer cylinder of the syringe. It is assumed that the distance between the pair of fitting walls 17 and the gap 20 of the flange portion 13 have a size suitable for fitting to the proximal end portion of the outer cylinder of the syringe.

FIG. 2 shows the configuration of a syringe 3 to which such a syringe flange member 1 is attached.
The syringe 3 includes an outer cylinder 31, a pusher 32, and an injection needle 33. The distal end portion 31 a of the outer tube 31 is formed with a tube tip portion 34 having a diameter smaller than that of the other portions, and an injection needle 33 is attached to the tube tip portion 34. On the other hand, an outer cylinder flange 35 is formed at the base end portion 31 b of the outer cylinder 31 for placing a finger when the pusher 32 is pushed in. The pusher 32 has a distal end portion slidably accommodated inside the outer cylinder 31, and a pusher flange 36 is formed at the base end portion.

Next, the operation of the syringe flange member 1 according to Embodiment 1 will be described.
First, when the syringe flange member 1 is attached to the distal end portion 31 a of the outer cylinder 31 of the syringe 3, the direction in which the fitting member 14 of the first fitting portion 11 extends from the flange portion 13 is changed to the injection of the syringe 3. A syringe is placed in the vicinity of the syringe 3 so as to coincide with the direction from the needle 33 toward the proximal end portion 31 b of the outer cylinder 31 and so that the opening portion 11 a of the first fitting portion 11 faces the distal end portion 31 a of the outer cylinder 31. The flange member 1 is positioned, and in this state, the first fitting portion 11 is pressed against the distal end portion 31 a of the outer cylinder 31 from a direction substantially perpendicular to the axial direction of the outer cylinder 31. As a result, as shown in FIG. 3, the distal end portion 31 a of the outer cylinder 31 is accommodated in the fitting member 14, and the cylinder tip portion 34 of the outer cylinder 31 is engaged with the engagement frame 15 in the fitting member 14. Accordingly, the first fitting portion 11 is fitted to the distal end portion 31 a of the outer cylinder 31.

At this time, the injection needle 33 attached to the tube tip portion 34 passes through the slit 16 formed in the fitting member 14 and the slit 21 formed in the second flat plate 19 of the flange portion 13 and is shown in FIG. Thus, it protrudes from the flange portion 13 by a length L. The syringe flange member 1 is formed in advance so that the length L is, for example, 4 to 6 mm from the skin surface of the patient to the subcutaneous tissue.
That is, by attaching the syringe flange member 1 to the distal end portion 31 a of the outer cylinder 31 of the syringe 3, the distal end of the injection needle 33 can be protruded from the flange portion 13 by a length L = 4 to 6 mm.

  In this manner, with the syringe flange member 1 attached to the distal end portion 31 a of the outer cylinder 31 of the syringe 3, the injection needle 33 is punctured substantially perpendicularly to the patient's skin, and the second flat plate of the flange portion 13. By inserting the injection needle 33 until 19 contacts the skin, the tip of the injection needle 33 can surely reach the subcutaneous tissue of the drug administration site. At this time, the puncture operation of the injection needle 33 is facilitated by puncturing the injection needle 33 vertically rather than obliquely with respect to the skin. Furthermore, the posture of the syringe 3 at the time of puncturing is stabilized by bringing the second flat plate 19 of the flange portion 13 into contact with the skin. For this reason, even a patient who is handicapped due to illness, age, etc., can easily and surely perform self-injection without adjusting the puncture depth and puncture angle himself.

Next, when the syringe flange member 1 is attached to the proximal end portion 31 b of the outer cylinder 31 of the syringe 3, the direction in which the fitting member 14 of the first fitting portion 11 extends from the flange portion 13 is changed to the syringe 3. Of the syringe 3 such that the opening 12a of the second fitting portion 12 faces the proximal end portion 31b of the outer cylinder 31 while matching the direction from the proximal end portion 31b of the outer cylinder 31 toward the injection needle 33. The syringe flange member 1 is positioned in the vicinity, and in this state, the second fitting portion 12 is pressed against the proximal end portion 31 b of the outer cylinder 31 from a direction substantially perpendicular to the axial direction of the outer cylinder 31. As a result, as shown in FIGS. 5 and 6, the base end portion 31 b of the outer cylinder 31 is accommodated between the pair of fitting walls 17 of the second fitting portion 12 and the gap 20 of the flange portion 13 is accommodated. The outer cylinder flange 35 of the syringe 3 is fitted, and the second fitting portion 12 is fitted to the proximal end portion 31 b of the outer cylinder 31.
At this time, the pusher 32 protruding from the base end portion 31 b of the outer cylinder 31 is passed through the notch 22 formed in the flange portion 13.

  When the syringe flange member 1 is thus attached to the proximal end portion 31 b of the outer cylinder 31 of the syringe 3, the substantially flat flange portion 13 is replaced by the outer flat flange portion 13 instead of the small outer cylinder flange 35 formed in advance on the syringe 3. Since it is arranged at the base end portion 31 b of the cylinder 31, the user can hold the outer cylinder 31 by placing a finger on the flange portion 13 having a larger area than the outer cylinder flange 35. For example, the pusher 32 can be pushed in while holding the outer cylinder 31 in a state where the index finger and the middle finger are put on the first flat plate 18 of the flange portion 13 and the thumb is put on the pusher flange 36. For this reason, it becomes possible to operate the syringe 3 easily even for a patient who is handicapped due to illness, old age, and the like.

  As described above, when the syringe flange member 1 according to Embodiment 1 is attached to the distal end portion 31a of the outer cylinder 31 of the syringe 3 using the first fitting portion 11, the flange portion 13 is injected. When the needle 33 is punctured, it functions as an auxiliary tool that automatically adjusts the puncture depth and stabilizes the posture of the syringe 3, and uses the second fitting portion 12 to base the proximal end of the outer cylinder 31 of the syringe 3. When attached to the portion 31b, the flange portion 13 serves as an auxiliary tool for gripping the outer cylinder 31 and operating the pusher 32. For this reason, as needed, either the 1st fitting part 11 and the 2nd fitting part 12 are selectively fitted to the front-end | tip part 31a or the base end part 31b of the outer cylinder 31, and it is a syringe. 3 can be improved.

Embodiment 2
In the syringe flange member 1 according to the first embodiment, the first fitting portion 11 and the second fitting portion 12 are formed integrally with each other, and the opening portion 11a faces the same direction A. However, the present invention is not limited to this, and it is only necessary to include a first fitting portion and a second fitting portion connected to the flange portion.
For example, in the syringe flange member 4 of the second embodiment shown in FIGS. 7 and 8, the first fitting portion 41 for fitting to the distal end portion of the outer cylinder of the syringe and the proximal end of the outer cylinder of the syringe The second fitting portion 42 for fitting to the portion is disposed on the flange portion 43 independently of each other and in opposite directions. That is, the formation direction A of the opening 41a of the first fitting portion 41 and the formation direction B of the opening 42a of the second fitting portion 42 are opposite to each other.
In addition, the 1st fitting part 41 and the 2nd fitting part 42 are the structures similar to the 1st fitting part 11 and the 2nd fitting part 12 in the flange member 1 for syringes of Embodiment 1, respectively. have.

In such a syringe flange member 4 as well as the syringe flange member 1 of the first embodiment, when the first fitting portion 41 is used to attach the syringe flange member 1, the flange portion 43 is an auxiliary device that automatically adjusts the puncture depth when the needle is punctured and stabilizes the posture of the syringe, and uses the second fitting portion 42 to attach to the proximal end portion of the outer cylinder of the syringe. When mounted, the flange 43 serves as an auxiliary tool for gripping the outer cylinder and operating the pusher.
Furthermore, when the opening 41a of the first fitting part 41 and the opening 42a of the second fitting part 42 are directed in opposite directions, the first fitting part 41 and the second fitting part are provided. 42 can be formed independently without interfering with each other, the structure of the first fitting portion 41 and the second fitting portion 42 is simplified, and the distal end portion or the proximal end portion of the outer cylinder of the syringe It becomes easy to fit in the part.

In the syringe flange member 1 according to the first embodiment, the flange portion 13 is formed in a rectangular shape having a long side and a short side, and the opening portion 11a of the first fitting portion 11 and the second fitting portion. 12 opening 12a was formed on the long side of the flange 13, but like the syringe flange member 5 shown in FIG. 9, the opening 51a and the second fitting of the first fitting 51 The opening 52 a of the joint portion 52 may be formed on the short side of the rectangular flange portion 53. In the syringe flange member 5, as in the syringe flange member 1 of the first embodiment, the first fitting portion 51 and the second fitting portion 52 are formed integrally with each other, and the first fitting portion The opening 51a of the 51 and the opening 52a of the second fitting portion 52 face each other in the same direction A. The formation direction A of the openings 51a and 52a is orthogonal to the short side of the flange portion 53. It is configured.
Even with the syringe flange member 5 having such a configuration, the same effect as the syringe flange member 1 of the first embodiment can be obtained, and the length of the flange portion 53 in the short side direction is small. Thus, the syringe flange member can be reduced in size.

Further, as in the syringe flange member 6 shown in FIG. 10, the first fitting portion 61 and the second fitting portion 62 are formed on the flange portion 63 independently of each other, and the first fitting is performed. The opening 61a of the part 61 and the opening 62a of the second fitting part 62 can also be arranged in directions orthogonal to each other. The formation direction A of the opening 61a of the first fitting portion 61 is set to be orthogonal to the long side of the rectangular flange portion 63, and the formation direction B of the opening 62a of the second fitting portion 62 is It is set to be orthogonal to the short side of the rectangular flange portion 63.
Even with the syringe flange member 6 having such a configuration, it is possible to achieve the same effects as the syringe flange member 1 of the first embodiment.
Furthermore, by arranging the opening 61a of the first fitting portion 61 and the opening 62a of the second fitting portion 62 in directions orthogonal to each other, the first fitting portion 61 and the second fitting portion are arranged. The joint portion 62 can be formed independently without interfering with each other, the structure of the first fitting portion 61 and the second fitting portion 62 is simplified, and the distal end portion of the outer cylinder of the syringe or It becomes easy to fit in the base end. Further, the length of the flange portion 63 in the short side direction can be reduced, and the syringe flange member can be downsized.
Similarly, the syringe flange member is configured so that the opening of the first fitting portion and the opening of the second fitting portion face each other at a predetermined angle other than a right angle. You can also.

Embodiment 3
FIG. 11 shows the syringe flange member 7 according to the third embodiment. As with the syringe flange member 1 of the first embodiment, the syringe flange member 7 includes a flange portion 73, and a first fitting portion 71 and a second fitting portion disposed on the flange portion 73. 72, but is configured to be divided into a first divided member 7a and a second divided member 7b.
As shown in FIG. 12, the first split member 7a has a rectangular first split flange portion 73a and a first fitting portion 71 disposed on the first split flange portion 73a. And the 1st fitting part 71 has the opening part 71a opened on the same surface as the side S1 of the long side of the 1st division | segmentation flange part 73a.

On the other hand, as shown in FIG. 13, the second divided member 7b includes a rectangular second divided flange portion 73b and a second fitting portion 72 disposed on the second divided flange portion 73b. The second fitting portion 72 has an opening 72a that opens on the same plane as the side surface S2 on the long side of the second split flange portion 73b.
When the syringe flange member 7 is divided into the first divided member 7a and the second divided member 7b, the flange portion 73 is divided into the first divided flange portion 73a and the second divided flange portion 73b. .

  The first divided member 7a and the second divided member 7b are provided with a coupling member (not shown). By this coupling member, as shown in FIG. 11, the side surface on the long side of the first divided flange portion 73a. The first divided member 7a and the second divided member 7b are configured to be detachably coupled in a state where S1 and the side surface S2 on the long side of the second divided flange portion 73b are joined to each other. ing. The coupling member includes, for example, a claw-shaped portion formed on one of the side surfaces S1 and S2 and an engaging portion formed on the other side. By engaging the claw-shaped portion with the engaging portion, the first member The dividing member 7a and the second dividing member 7b can be coupled to each other. It is preferable to arrange a plurality of combinations of such claw-like portions and engaging portions along the side surfaces S1 and S2.

  In the third embodiment, as shown in FIGS. 12 and 13, the first divided member 7a and the second divided member 7b are formed on the first divided member 7a with the first divided member 7a and the second divided member 7b being divided from each other. After fitting one fitting portion 71 to the distal end portion of the outer cylinder of the syringe, as shown in FIG. 11, the second divided member 7b is joined to the first divided member 7a by the coupling member, and the syringe Is inserted, the first divided flange portion 73a and the second divided flange portion 73b are integrated to form one flange portion, and the puncture depth is automatically set when the flange portion punctures the injection needle. It functions as an auxiliary tool that stabilizes the posture of the syringe as well as adjusting. Or after fitting the 2nd fitting part 72 currently formed in the 2nd division member 7b with the base end part of the outer cylinder of a syringe, as FIG. When the first divided member 7a is coupled to the divided member 7b, the integrated first divided flange portion 73a and second divided flange portion 73b grip the outer cylinder of the syringe and operate the pusher It becomes an auxiliary tool.

Even when the first fitting portion 71 is fitted to the distal end portion of the outer cylinder of the syringe, and when the second fitting portion 72 is fitted to the proximal end portion of the outer cylinder of the syringe, Since the outer peripheral portion of the outer cylinder of the syringe is surrounded by both the divided members 7a and 7b by connecting the one divided member 7a and the second divided member 7b to each other, the syringe flange member 7 attached to the syringe Even if it receives unexpected external force, it becomes difficult to drop off from the syringe, and a more stable syringe operation can be performed.
In addition, the first divided member 7a and the second divided member 7b can be used by being separately fitted to the outer cylinder of the syringe without being coupled to each other. For example, if the 1st fitting part 71 of the 1st division member 7a is made to fit in the front-end | tip part of the outer cylinder of a syringe, the 1st division | segmentation flange part 73a will become an auxiliary tool of syringe operation, and 2nd division If the 2nd fitting part 72 of the member 7b is fitted to the base end part of the outer cylinder of a syringe, the 2nd division | segmentation flange part 73b will become an auxiliary tool of syringe operation. Further, the first split member 7a and the second split member 7b are separated from each other, and the first fitting portion 71 of the first split member 7a is fitted to the distal end portion of the outer cylinder of the syringe and the second If the second fitting portion 72 of the split member 7b is fitted to the proximal end portion of the outer cylinder of the syringe, the first split member 7a can be used to adjust the puncture depth and stabilize the posture of the syringe. Further, the operability of the pusher can be improved by the second dividing member 7b.

  In addition, the above-described coupling member includes the side surface S1 on the long side of the first split flange portion 73a and the opening portion of the second fitting portion 72 that form the same surface as the opening portion 71a of the first fitting portion 71. The side surface S2 on the long side of the second divided flange portion 73b that forms the same surface as 71b is joined to each other, but as shown in FIG. 14, what is the opening 71a of the first fitting portion 71? The side surface S3 on the long side of the first split flange portion 73a facing in the opposite direction and the opening portion 71b of the second fitting portion 72 on the long side of the second split flange portion 73b facing in the opposite direction. The first split member 7a and the second split member 7b may be configured to be detachably coupled with the side surface S4 being joined to each other. Even if it does in this way, the 1st division | segmentation flange part 73a and the 2nd division | segmentation flange part 73b which were united mutually by the coupling member will become an auxiliary tool at the time of operating a syringe.

Embodiment 4
FIG. 15 shows the syringe flange member 8 according to the fourth embodiment. The syringe flange member 8 is disposed on the flange portion 83 and the flange portion 83 so as to face each other in the opposite direction, similarly to the syringe flange member 4 of the second embodiment shown in FIGS. A first fitting portion 81 and a second fitting portion 82 are provided. The first fitting portion 81 has a fitting member 84 having a predetermined height for accommodating the distal end portion of the outer cylinder of the syringe, and a cap detaching portion 85 is formed on the fitting member 84. ing.
The cap detachment portion 85 is for separating and removing the injection needle protection cap attached to the distal end portion of the outer cylinder when the distal end portion of the outer cylinder of the syringe is fitted to the fitting member 84. It is comprised by a pair of inclined surface formed in the fitting member 84.

In order to protect the injection needle, the injection needle protection cap is fitted to the distal end portion of the outer cylinder while covering the injection needle, and the opening 81a of the first fitting portion 81 is attached to the distal end portion of the outer cylinder of the syringe. When the first fitting portion 81 is pressed against the distal end portion of the outer cylinder from a direction substantially perpendicular to the axial direction of the outer cylinder so as to be fitted to the distal end portion of the outer cylinder of the syringe, the injection needle protection cap These end portions come into contact with a pair of inclined surfaces forming the cap detachment portion 85. And as the 1st fitting part 81 is made to approach with respect to the front-end | tip part of an outer cylinder, a syringe needle protection cap is guided to a pair of inclined surface which forms the cap removal | release part 85, and gradually goes to the front-end | tip direction of an outer cylinder. If it moves and the front-end | tip part of an outer cylinder is accommodated in the fitting member 84, an injection needle protective cap will separate and separate from the front-end | tip part of the outer cylinder of a syringe.
In this manner, the first fitting portion 81 is fitted to the distal end portion of the outer cylinder of the syringe, and at the same time, the injection needle protection cap is automatically detached from the distal end portion of the outer cylinder. Is unnecessary, and the operability of the syringe is further improved.

In the fourth embodiment, as in the syringe flange member 4 shown in FIGS. 7 and 8, the cap is removed from the syringe flange member 8 in which the first fitting portion and the second fitting portion face in opposite directions. Although the portion 85 is formed, the present invention is not limited to this, and as shown in FIG. 1 or FIG. 9, the syringe flange member in which the first fitting portion and the second fitting portion face each other in the same direction, As shown in FIG. 10, the first fitting portion and the second fitting portion have a syringe flange member in which the first fitting portion and the second fitting portion are orthogonal to each other, and the first division having the first fitting portion as shown in FIG. The cap detachment portion can be formed in the same manner for each first fitting portion of the syringe flange member that can be divided into the member and the second divided member having the second fitting portion.
However, in the syringe flange member in which the first fitting portion and the second fitting portion are oriented in the same direction, it is necessary to configure the cap detachment portion and the second fitting portion so as not to interfere with each other.

  In addition, the syringe to which the flange member for a syringe according to the present invention is attached is not particularly limited, and can correspond to various syringes such as 0.5 mL, 2.25 mL, and 3 mL in addition to the 1 mL syringe. it can. Since the syringe dimensions are standardized by ISO (International Organization for Standardization) for each volume, the syringe flange member of the present invention may be configured according to the standard value of the syringe to be mounted.

  1, 4, 5, 6, 7, 8 Syringe flange member, 11, 41, 51, 61, 71, 81 First fitting portion, 11a, 11b, 41a, 41b, 51a, 51b, 61a, 61b, 71a, 71b, 81a Opening part, 12, 42, 52, 62, 72, 82 Second fitting part, 13, 43, 53, 63, 73, 83 Flange part, 14, 84 Fitting member, 15 Engagement Frame, 16, 21 Slit, 17 Fitting wall, 18 First flat plate, 19 Second flat plate, 20 Air gap, 22 Notch, 3 Syringe, 31 Outer tube, 31a tip, 31b Base end, 32 Pusher , 33 Injection needle, 34 Tube tip, 35 Outer tube flange, 36 Pusher flange, 7a First split member, 7b Second split member, 73a First split flange portion, 73b Second split flange portion, S1 , S2 S3, S4 side, 85 the cap withdrawal unit, the central axis, A, formation direction of the B opening, the protruding length of the L needles of the Z fitting member.

Claims (8)

A syringe flange member that is detachably attached to an outer cylinder of a syringe to which a syringe needle is attached to the tip,
A first fitting portion for fitting to the distal end portion of the outer cylinder;
A second fitting portion for fitting to the base end portion of the outer cylinder;
A flange portion connected to the first fitting portion and the second fitting portion, and when the first fitting portion is used to attach to the distal end portion of the outer cylinder, the flange portion Becomes an auxiliary tool for puncturing the injection needle, and when the second fitting portion is used to attach to the proximal end portion of the outer cylinder, the flange section grips the outer cylinder. Doo Ri Na,
The tip of the injection needle protrudes from the flange portion by fitting the first fitting portion to the tip of the outer cylinder,
It said second fitting portion, the syringe flange, characterized in Rukoto to adjust fitting the base end portion of the outer cylinder by engaging the outer cylinder flange formed on the proximal end of the outer cylinder Element. The first fitting portion is formed at the distal end portion of the outer cylinder and is engaged with the distal end portion of the outer cylinder by engaging with a cylinder tip portion to which the injection needle is attached,
The said flange part has a slit which makes the front-end | tip of the said injection needle protrude a predetermined length through the said injection needle when the said 1st fitting part fits the front-end | tip part of the said outer cylinder. The flange member for syringes. It said first fitting part and the second fitting portion, according to claim 1 or 2 having an opening for fitting from a direction substantially perpendicular to the axial direction of the outer cylinder relative to each of the outer cylinder The flange member for syringes. The syringe flange member according to claim 3 , wherein the opening of the first fitting portion and the opening of the second fitting portion are oriented in the same direction. The syringe flange member according to claim 3 , wherein the opening portion of the first fitting portion and the opening portion of the second fitting portion face in opposite directions. The syringe flange member according to claim 3 , wherein the opening of the first fitting portion and the opening of the second fitting portion are oriented in directions orthogonal to each other. It can be divided into a first divided member having the first fitting portion and a second divided member having the second fitting portion,
The flange portion can be of any claim 1 to 3 which is divided into a second split flange portion formed in the first and the second divided member and the split flange portion formed in the first divided member The syringe flange member according to claim 1. The first fitting portion is a cap detachment portion for separating and removing the injection needle protection cap attached to the distal end portion of the outer cylinder when the first fitting portion is fitted to the distal end portion of the outer cylinder. The flange member for a syringe according to any one of claims 1 to 7 , comprising:

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