JP2001161815A - Pressure member for syringe and syringe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure member for a syringe capable of alleviating the pain at a time of injection. SOLUTION: A pressure member for a syringe equipped with an attaching part 22 attached to the syringe 11, a cylindrical part 34 receiving the needle 13 of the syringe 11 in the state attached to the syringe 11 in the attaching part 22 and support parts 22, 24, 32, 33, which support the cylindrical part 34 so that the cylindrical part 34 is made movable between the state positioned before the tip part of the needle 13 and the state positioned on the root side of the needle 13 and energize the same to the region in front of the tip part of the needle 13, in the state attached to the syringe 11 in the attaching part 22 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device for a syringe and a syringe which can relieve pain when performing an injection.

[0002]

2. Description of the Related Art As is well known, injection is performed by inserting a needle of a syringe into a predetermined position of a patient's body and injecting a drug in the syringe into the body through the needle. At present, patients suffer pain when piercing the needle.

[0003]

However, it is better that the pain at the time of such injection is naturally smaller, and improvement of the syringe has been desired in this regard. Therefore, an object of the present invention is to provide a pressing device for a syringe and a syringe that can reduce pain when performing an injection.

[0004]

In order to achieve the above object, a pressing device for a syringe according to the present invention comprises a mounting portion to be attached to a syringe, and a needle of the syringe attached to the syringe at the mounting portion. A cylindrical portion positioned inside, and a state in which the cylindrical portion is mounted on the syringe at the mounting portion, and a state in which the cylindrical portion is positioned more forward than the distal end portion of the needle. And a support portion for movably supporting the cylindrical portion in a state of being located on the root side and for urging the tubular portion toward the forward side.

Accordingly, when the cylindrical portion is attached to the syringe at the mounting portion, the cylindrical portion is located outside the needle of the syringe and is located forward of the distal end of the needle. Pressed against the body. Then, due to the pressing of the tubular portion, the patient loses the sense inside the tubular portion. Then, in this state, when the syringe is further brought closer to the patient's body, the cylindrical part allowed to move by the support part moves to the root side from the tip of the needle, and the tip of the needle moves to the cylinder in the patient's body. Stab into the inside of the shape.

Further, the syringe of the present invention has a cylindrical portion for positioning the needle inside, a state in which the cylindrical portion is positioned forward of the distal end of the needle, and a state in which the root is located closer to the distal end of the needle. And a support portion for movably supporting the cylindrical portion and biasing the tubular portion toward the front side. Accordingly, the tubular portion is pressed against the patient's body in a state where the tubular portion is outside the needle and is located on the front side of the tip of the needle. Then, due to the pressing of the tubular portion, the patient loses the sense inside the tubular portion. Then, in this state, when the needle is further brought closer to the patient's body, the cylindrical part allowed to move by the support part moves to the base side from the tip of the needle, and the tip of the needle moves to the cylinder in the patient's body. Stab into the inside of the shape.

[0007]

FIG. 1 shows a first embodiment of the present invention.
This will be described below with reference to FIG. In FIG. 1, reference numeral 11 denotes a syringe, which is composed of a syringe body 12 and a needle 13, and the syringe 11 has a pressing tool 14
Is attached.

The syringe body 12 includes a cylindrical portion 15, a flange portion 16 formed at one end of the cylindrical portion 15, and a cylindrical portion 15.
Part 17 formed on the other end side of the
1 having a needle mounting portion 18 formed at the tip of the cylinder 1
9 and a piston 20 slidably fitted in the cylinder 19.

The pressing member 14 includes an attachment member (attachment portion, support portion) 22 attached to the cylinder 19 of the syringe body 12.
An operating member 23 slidably fitted to the mounting member 22 in a direction along the central axis of the syringe main body 12 within a predetermined range.
And a spring (supporting portion) 24 for urging the operating member 23 and the mounting member 22.

The mounting member 22 is provided on the cylindrical portion 1 of the cylinder 19.
5 by fitting the taper portion 17 side of the cylinder 1
9 and the inner cylindrical portion 2
A connecting portion 27 formed on one end side of the connecting portion 27 so as to project outward in the radial direction; an outer cylindrical portion 28 formed coaxially with the inner cylindrical portion 26 on the outer side in the radial direction of the connecting portion 27; It has a contact portion 29 formed on the other end side of the inner cylindrical portion 26 so as to protrude inward in the radial direction. Here, a groove 30 is formed on the inner peripheral side of the outer cylindrical portion 28 along the axial direction except for the end opposite to the connecting portion 27. The mounting member 22 is provided with an inner cylindrical portion 26.
The cylinder 19 is attached to the cylinder 19 by fitting the tapered portion 17 of the cylindrical portion 15 of the cylinder 19 to the connecting portion 27 of the cylinder 19 until the tapered portion 17 contacts the contact portion 29.

The operating member 23 includes a fitting cylindrical portion (supporting portion) 32 coaxially fitted between the outer cylindrical portion 28 and the inner cylindrical portion 26 of the mounting member 22, and the fitting cylindrical portion 32. When the fitting cylindrical portion 32 is fitted with the fitting cylindrical portion 32, the inner extending portion 33 directs radially inward from a portion of the fitting cylindrical portion 32 extending in the opposite direction to the fitting member 22 in a state where the fitting cylindrical portion 32 is fitted. A tubular portion 34 provided coaxially with the fitting cylindrical portion 32 is provided at the distal end side of the inner extension portion 33 in a state fitted to the member 22. Here, on the outer peripheral side of the fitting cylindrical portion 32, when fitted between the outer cylindrical portion 28 and the inner cylindrical portion 26 of the mounting member 22, the fitting cylindrical portion 32 fits into the groove 30. A projection 35 for preventing the attachment member 32 from coming off from the attachment member 22 is formed. Here, the tip of the cylindrical portion 34 has an uneven shape in which peaks 34a having a pointed height of 1 mm are arranged at intervals of 1 mm. The inner peripheral surface of the inner extension 33 has a circular shape with a diameter of 5 mm.

A fitting cylindrical portion 32 of the operating member 23 is provided between the outer cylindrical portion 28 and the inner cylindrical portion 26 of the mounting member 22.
Are fitted between the connecting portion 27 of the mounting member 22 and the fitting cylindrical portion 32 of the operating member 23 so as to urge them in opposite directions. I have.

As a result, when the pressing member 14 is attached to the cylinder 19 of the syringe 11 by the attachment member 22, the cylindrical portion 34 of the pressing member 14 is substantially coaxial with the needle 13 inside (the axis of the needle 13). (Inside when viewed along the direction). Similarly, when the operating member 23 is most protruded from the mounting member 22 by the elastic urging force of the spring 24 when the mounting member 22 is mounted on the cylinder 19 of the syringe 11, the cylindrical portion 34 is moved to the needle 13. The state where the operating member 23 enters the mounting member 22 against the urging force of the spring 24 while the operating member 23 is positioned on the forward side of the distal end portion (the state of the cylindrical portion 34 indicated by a solid line in FIG. 1). In this state, the tubular portion 34 is positioned closer to the root than the tip of the needle 13 (the tubular portion 34 indicated by a dashed line in FIG. 1).

According to the first embodiment having the above configuration,
When the pressing member 14 is attached to the syringe 11 by the attachment member 22, the cylindrical portion 34 is located outside the needle 13 of the syringe 11 and is located forward of the tip of the needle 13, and in this state, the cylinder The ridge 34 is pressed against the patient's body B at the peak 34a. Then, the spring 24 is slightly contracted (the state of the cylindrical portion 34 shown by a two-dot chain line in FIG. 1), and the urging force satisfactorily presses the cylindrical portion 34 so that the patient can feel the inner part of the cylindrical portion 34. Disappears. Then, in this state, when the syringe 11 is further approached to the patient's body B, the operating member 23 moves against the urging force of the spring 24, and as a result, the cylindrical portion 34 is more advanced than the distal end of the needle 13. The needle 13 moves to the root side, and the tip of the needle 13 stabs into a portion inside the tubular portion 34 of the patient's body B (the state of the tubular portion 34 indicated by a chain line in FIG. 1). Therefore, the needle 13 is stabbed into a part inside the tubular part 34 where the sense is lost, so that pain can be relieved.

A second embodiment of the present invention will be described below with reference to FIG. In the second embodiment, only the pressing tool is different, so that the following description will focus on this different part. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The pressing tool 40 according to the second embodiment is an integral member made of a flexible material. That is, the pressing tool 40
A cylindrical portion (attaching portion) 41 attached to the cylinder 19 by fitting the tapered portion 17 side of the cylindrical portion 15 of the cylinder 19 to one end of the cylindrical portion 41 so as to protrude inward in the radial direction. And a contact portion 42 formed. Further, the pressing tool 40 includes a plurality of extending portions (supporting portions) 43 extending along the axial direction of the cylindrical portion 41 from the contact portion 42 side of the cylindrical portion 41 and the cylindrical portion 41 of the extending portion 43. A cylindrical portion (supporting portion) 44 provided on the opposite side, and an inner extending portion 45 directing radially inward from the cylindrical portion 44.
And a cylindrical portion 46 provided coaxially with the cylindrical portion 44 on the distal end side of the inner extending portion 45. Here, the cylindrical portion 4
6 has a sharp peak 46a having a height of 1 mm.
Are irregularities arranged at intervals of 1 mm. Further, the inner peripheral surface of the inner extension 45 has a circular shape with a diameter of 5 mm. The pressing tool 40 is provided on the cylindrical portion 4 of the cylindrical portion 41.
The cylinder 19 is attached to the cylinder 19 by fitting the tapered portion 17 side of the cylindrical portion 15 of the cylinder 19 to the side opposite to 6 until the tapered portion 17 contacts the contact portion 42.

As a result, when the pressing member 40 is attached to the cylinder 19 of the syringe 11 at the cylindrical portion 41, the cylindrical portion 46 is substantially coaxial with the needle 13 and the inner side (the axis of the needle 13). (Inside when viewed along the direction). Similarly, in the state where the cylindrical portion 41 is attached to the cylinder 19 of the syringe 11, when the extending portion 43 is linearly extended, the cylindrical portion 46 is positioned forward of the distal end of the needle 13. 1 (the state of the tubular portion 46 shown by the solid line in FIG. 1), while the tubular portion 46 is positioned closer to the root than the tip of the needle 13 when the extension portion 43 is bent. This is the state (the state of the cylindrical portion 46 shown by the dashed line in FIG. 1).

According to the second embodiment having the above configuration,
When the pressing tool 40 is attached to the syringe 11, the cylindrical portion 4
6 is located outside the needle 13 of the syringe 11 and is located further forward than the distal end of the needle 13, and in this state, the cylindrical portion 46 is pressed against the patient's body B at its peak 46a. Then, the extending portion 43 is slightly bent (the state of the cylindrical portion 46 shown by a two-dot chain line in FIG. 1), and the elastic biasing force causes the cylindrical portion 46 to be bent.
Is pressed satisfactorily, and the patient loses sensation at the part inside the cylindrical part 46. And in this state,
When the syringe 11 is further brought closer to the patient's body B, the extension 4
3 further flexes, and as a result, the cylindrical portion 46 moves to the base side from the distal end of the needle 13, and the distal end of the needle 13
At the inside of the cylindrical portion 46 in (a state of the cylindrical portion 46 shown by a dashed line in FIG. 1). Therefore, the cylindrical portion 4
Since the needle 13 is stuck in a part inside which the sensation disappears, the pain can be relieved.

In the above description, the case where the pressing tools 14 and 40 detachably attached to the syringe 11 are attached to the syringe 11 has been described as an example. A supporting portion that movably supports a state in which the cylindrical portion is located closer to the distal side than the tip of the needle and a state in which the cylindrical portion is located closer to the base than the tip of the needle, The same effect as described above can be obtained even if the syringe is provided integrally with the syringe.

[0020]

As described above in detail, according to the pressing device for a syringe of the present invention, when the cylindrical portion is mounted on the syringe at the mounting portion, the cylindrical portion is located outside the needle of the syringe and the distal end of the needle. In this state, the tubular portion is pressed against the patient's body. Then, due to the pressing of the tubular portion, the patient loses the sense inside the tubular portion. Then, in this state, when the syringe is further brought closer to the patient's body, the cylindrical portion allowed to move by the support portion is
The needle moves to the base side from the tip of the needle, and the tip of the needle sticks into a portion of the patient's body inside the tubular portion. Therefore, the needle is stuck in a part inside the cylindrical part where the sense is lost, so that pain can be relieved.

Further, according to the syringe of the present invention, the tubular portion is pressed against the patient's body in a state where the tubular portion is located outside the needle and is located forward of the tip of the needle. Then, due to the pressing of the tubular portion, the patient loses the sense inside the tubular portion. Then, in this state, when the needle is further brought closer to the patient's body, the cylindrical part allowed to move by the support part moves to the base side from the tip of the needle, and the tip of the needle moves to the cylinder in the patient's body. Stab into the inside of the shape. Therefore, the needle is stuck in a part inside the cylindrical part where the sense is lost, so that pain can be relieved.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention;
(A) is a front view, (b) is a side sectional view.

FIG. 2 shows a second embodiment of the present invention.
(A) is a front view, (b) is a side sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Syringe 13 Needle 14, 40 Pressing tool 22 Mounting member (mounting part, support part) 24 Spring (support part) 32 Fitting cylindrical part (support part) 33, 43 Extension part (support part) 44 Cylindrical part (support part) ) 34,46 cylindrical part

Claims (2)

[Claims] 1. A mounting portion attached to a syringe, a cylindrical portion for positioning a needle of the syringe inside when the mounting portion is attached to the syringe, and a mounting portion attached to the syringe at the mounting portion. In addition, the tubular portion is movably supported in a state in which the tubular portion is located more forward than the distal end of the needle and a state in which the tubular portion is located closer to the base than the distal end of the needle, and the tubular portion is provided in the form A pressing tool for a syringe, comprising: a support portion biased to a forward side. 2. A cylindrical portion for positioning the needle inside, a state in which the cylindrical portion is positioned forward of the distal end of the needle, and a state in which the cylindrical portion is positioned closer to the root than the distal end of the needle. And a support portion for movably supporting the cylindrical portion and biasing the cylindrical portion toward the front side.