JP3249704B2 - Syringe with cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a syringe with a cap, and more particularly to a syringe capable of securely locking a cap at an open / close position.

[0002]

2. Description of the Related Art Heretofore, as this type of syringe, there is known a syringe provided with a syringe body having a syringe needle attached to a distal end thereof and a cap for covering the syringe needle of the syringe body (for example, an actual syringe). JP-A-63-189255, JP-A-6-189255
No. 4-17248, Japanese Utility Model Laid-Open No. 1-62849, etc.).

[0003] The above-mentioned conventional cap has a cap fixing portion fixed to the distal end portion of the syringe main body, and a cap main body rotatably connected to the cap fixing portion via a hinge portion. The conventional cap body described above,
A storage section for storing the injection needle and a cutout communicating with the storage section and allowing the injection needle to enter and exit were provided.

[0004]

However, in the above-mentioned conventional syringe, the cap is opened by rotating the cap around the hinge part, and when performing the injection, the cap fluctuates from the hinge part, which hinders medical treatment. There was a first problem. In addition, after using the syringe, if the cap is turned around the hinge part and closed, it will not be different from an unused syringe, so it is impossible to know whether it is an unused injection needle or a used injection needle. There was a second problem of getting lost. (Claim 1) The invention according to claim 1 has been made in view of the above-mentioned first problem of the prior art, and the purpose thereof is to prevent the cap from hanging during use. It is an object of the present invention to provide a syringe with a cap capable of preventing the occurrence of a syringe.

[0005] In addition to the above, the invention according to claim 1 is characterized in that
In view of the second problem of the prior art described above,
And has the following objectives: That is, the claims
The invention described in (1) is such that it is possible to determine visually whether the injection needle is unused or used with a cap attached thereto. (Claim 2) The invention according to claim 2 is a second embodiment of the above-mentioned prior art.
It was made in view of the second problem, and aimed at the following points
And

That is, according to the invention of claim 2 , it is possible to more reliably determine whether the injection needle is unused or used by checking the state of the broken portion.

[0007]

SUMMARY OF THE INVENTION The present invention is to achieve the above-mentioned object, and its contents will be described below with reference to embodiments shown in the drawings. (Claim 1) The invention according to claim 1 has the following features.

That is, for example, as shown in FIGS. 1 and 10, between the cap fixing portion (50) and the cap body (70),
From the storage position (see FIG. 2) where the injection needle (20) is stored in the storage section (71) of the cap body (70), the cap body (70) is rotated around the hinge (60), and the injection is performed. At the use position where the needle (20) is exposed, a use-time locking means (for example, a locking projection 52 and a locking groove 73) for locking the cap body (70) to the cap fixing portion (50) is provided.

In addition to the above, the invention according to claim 1 provides the following:
It is characterized by the following points. That is, between the cap fixing portion (50) and the cap body (70), for example, as shown in FIGS. 11 and 12, the hinge portion (60) is moved from the use position (see FIG. 1) where the injection needle (20) is exposed. ), The used injection needle (20) is stored in the storage part (71), and the cap main body (70) is disposed at a disposal position different from the storage position (see FIG. 2). Disposal locking means (for example, locking projections 52 and locking holes 82) for locking the (70) to the cap fixing portion (50) is provided. (Claim 2) The invention according to claim 2 has the following features.

That is, the cap fixing portion (50) and the cap
Between the main body (70), for example, as shown in FIGS.
The injection needle (20) is stored in the storage section (71) of the cap body (70).
From the stored storage position (see Fig. 2), move the hinge (60)
Rotate the cap body (70) to the heart, exposing the injection needle (20).
The cap body (70) is fixed with the cap in the use position
In use, locking means (for example, locking projection 52 and
A locking groove 73) is provided.

In addition to the above, the invention according to claim 2 provides the following:
It is characterized by the following points. That is, between the cap fixing portion (50) and the cap body (70), for example, as shown in FIGS.
In the position where (20) is stored, the breakable breakable portion (90, 91) for fixing the cap body (70) to the cap fixing portion (50)
It has.

[0012]

[Action] (Claim 1) According to the invention of claim 1, the following operation is achieved. That is, for example, as shown in FIG.
The cap body (70) from the hinge part (60)
To expose the injection needle (20), for example, as shown in FIGS.

In this use position, the cap body (70)
For example, as shown in FIG. 1, the cap is fixed to the cap fixing portion (50) by the locking means (for example, the locking projection 52 and the locking groove 73) at the time of use, so that the cap body (70) does not swing. to this
In addition, according to the first aspect of the invention, the following operation is provided.
To play. That is, after use, as shown in FIGS. 11 and 12, for example, from the state of FIG.
The syringe needle (20) after use is reversed around the center (60), and is stored in the storage section (71) of the cap body (70).

At this time, as shown in FIG. 11, for example, the cap body (70) is
And the locking hole 82), the discard position different from the storage position,
It is fixed to the cap fixing part (50). For this reason, it is possible to determine whether the injection needle (20) has been used or not, by looking at the attached state of the cap body (70).

In addition, since the cap main body (70) is locked to the cap fixing portion (50) by the discarding locking means (for example, the locking projection 52 and the locking hole 82), carelessness is provided. The used needle (20) may not be exposed. (Claim 2) According to the invention set forth in claim 2, the following operation is achieved.
You.

That is, as shown in FIG. 9, for example, breaking the broken portions (90, 91), rotating the cap body (70) about the hinge portion (60), and exposing the injection needle (20). This allows the use of the injection needle (20). Because of this,
By checking the state of (90, 91), it can be determined whether the injection needle (20) has been used or not used.

In addition, in the unused state, the broken portion (9
(0,91) via the cap body (70) 70
Since it is fixed to 0), there is no danger that the injection needle (20) is inadvertently exposed, and it is safe and sanitary.

[0018]

1 to 11 show a first embodiment of the present invention. FIG. 1 is a partial cross-sectional view of the syringe showing a state where the cap body is locked at a use position. FIG. 2 shows a plan view of a fresh unused syringe.

3 to 8 show unused caps, respectively. FIG. 2 is a plan view of the cap, FIG. 3 is a plan view of FIG.
4 is a top view of FIG. 3, FIG. 5 is a bottom view showing a state where a part of the cap body of FIG. 3 is crushed, and FIG. 6 is a side view showing a state where a part of the cap body of FIG. 3 is crushed. 7 is VI of FIG.
FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 4, respectively.

FIG. 9 is a partial sectional view of the syringe showing a state in which a broken portion of the cap is broken. FIG. 10 is a partial plan view of the syringe showing a state where the cap body is locked at the use position. 11 and 12 show a state in which the cap body is locked at the discard position, respectively. FIG. 11 shows a partial plan view of the syringe, and FIG. 12 shows a longitudinal sectional view of the cap of FIG.

In FIG. 2, reference numeral 10 denotes a medical syringe. This syringe 10 is roughly divided into a syringe main body 30 having a syringe needle 20 attached to a distal end thereof, and a syringe needle 20 of the syringe main body 30. And a cap 40 for covering. The cap 40 is
When roughly classified, as shown in FIG. 2, a cap fixing portion 50 fixed to the distal end portion of the syringe main body 30, and a cap main body 70 rotatably connected to the cap fixing portion 50 via a hinge portion 60. It has. Then, the cap 40 is integrally formed of, for example, a thermoplastic synthetic resin such as PP having appropriate rigidity and elasticity, and is sterilized after being formed.

The cap fixing portion 50 has a hollow cylindrical shape as shown in FIGS.
A mounting section 51 having a C-shaped cross section with an open upper surface is formed, into which the distal end of 30 is fitted. Then, the distal end portion of the syringe main body 30 is mounted from the open upper surface of the mounting portion 51 using the elasticity of the resin, and is fixed to the distal end portion of the syringe main body 30 using the restoring force of the resin.

As shown in FIG. 8, the hinge portion 60 has a thin structure and connects the lower ends of the cap fixing portion 50 and the cap body 70 to each other. As shown in FIGS. 7 and 8, the cap body 70 includes a storage portion 71 for storing the injection needle 20;
Notch that communicates with this storage section 71 and allows the injection needle 20 to enter and exit
72. As shown in FIGS. 7 and 8, the cap main body 70 has a hollow cylindrical shape, and its entire length is set longer than the injection needle 20.

Specifically, inside the cap body 70,
As shown in FIGS. 7 and 8, a groove having a U-shaped cross section with an open upper surface is formed. The groove width is set to be equal to or larger than the diameter of the injection needle 20, and the total length of the groove is set to be longer than that of the injection needle 20. ing. The inside of the groove of the cap body 70 is a storage portion 71 for storing the injection needle 20, and the open upper surface of the groove is a cutout 72 through which the injection needle 20 can enter and exit. Further, as shown in FIG. 4, the notch 72 has an oval shape that is long in the axial direction of the injection needle 20.

On the other hand, as shown in FIGS. 3 and 8, the cap body 70 is provided with an operation handle 80 used for opening and closing, and one end of the operation handle 80 is connected to the bottom surface of the cap body 70 through a thin portion 81. Have been. As shown in FIG. 8, a breakable two-piece
Two breaks 90, 91 are formed.

First, as shown in FIGS. 4 and 8, the first breaking portion 90 connects the upper ends of the cap fixing portion 50 and the cap body 70 to each other.
It has a thin structure. The second break 91 is shown in FIG.
As shown in FIG. 8, it is formed between the cap fixing portion 50 and the operation handle 80, and has a thin structure. The cap fixing portion 50 and the cap body 70 are connected to each other via an operation handle 80 having a second break portion 91.

In the embodiment shown in the drawings, the broken portion 9
Although 0 and 91 are formed in two places, they may be formed in one place or three or more places. As shown in FIG. 8, between the cap fixing portion 50 and the cap body 70, the hinge portion 60 is moved from the storage position (see FIG. 2) where the injection needle 20 is stored in the storage portion 71 of the cap body 70. Around the cap body 70
Is rotated, and the use position where the injection needle 20 is exposed (see FIG. 1)
At the time of use, the cap body 70 is locked to the cap fixing part 50 at the time of use, and the cap body 70 is reversed around the hinge part 60 from the use position where the injection needle 20 is exposed (see FIG. 1). The injection needle 20 is stored in the storage section (71),
And a disposal position (FIG. 1) different from the storage position (see FIG. 2).
1 and 12), there is provided a disposal locking means for locking the cap body 70 to the cap fixing portion 50.

First, as shown in FIGS. 1 and 8, the in-use locking means includes a locking projection 52 protruding downward from the bottom of the cap fixing portion 50, and the locking projection 52 is fitted. And a locking groove 73 formed in the bottom of the cap body 70. As shown in FIG. 8, a hook portion 53 protruding in an L-shape toward the distal end of the injection needle 20 is provided at the distal end portion of the locking projection 52. Further, the above-mentioned second break portion 91 is formed at the lower end portion of the hook portion 53, and is connected to the operation handle 80 via the second break portion 91 at the time of molding.

As shown in FIG. 5, the locking groove 73 has a rectangular shape that is long in the axial direction of the injection needle 20, and the width of the right and left grooves is set to be less than the thickness of the locking projection 52. For this reason, the locking projection 52 is inserted into the locking groove 73 using the elasticity of the resin, and is held in the locking groove 73 by the elastic restoring force and the frictional force of the resin. In the embodiment shown in the drawings, the locking projection 52 is formed on the cap fixing portion 50, and the locking groove 73 is formed on the cap body 70, however, the locking groove is formed on the cap fixing portion 50,
Locking projections may be formed on the cap body 70, and as the locking means during use, one of the concave and convex portions engaging with each other is formed on the cap fixing portion 50, and the other is formed on the cap body 70, respectively. It is good.

As shown in FIGS. 8 and 12, the locking means at the time of discarding is provided with the locking projections 52 formed on the cap fixing portion 50.
And a locking hole 82 formed in the middle of the length of the operation handle 80 in which the locking projection 52 fits. As shown in FIG. 4, the locking hole 82 is formed in a rectangular shape that is long in the axial direction of the injection needle 20, similarly to the locking groove 73 of the cap body 70. Further, the width of the left and right grooves of the locking hole 82 may be set to be equal to or less than the thickness of the locking protrusion 52, and the hook portion 53 of the locking protrusion 52 inserted into the locking hole 82 is The hooking on the edge prevents the locking hole 82 from coming off the locking projection 52.

The locking hole 82 may have the same structure as the locking groove 73, and the elastic restoring force and the frictional force of the resin may be used.
In the embodiment shown in the drawings, the locking projection 52 is formed on the cap fixing portion 50 and the locking hole 82 is formed on the operation handle 80. However, the locking hole is formed on the cap fixing portion 50, and
Each of the projections may be formed on the cap fixing portion 50, and the other of the projections and depressions engaging with each other may be formed on the cap main body 70 or one of the operation handles 80 thereof. What is necessary is just to form in both.

Next, the cap 40 having the above-described structure is used.
The procedure for using is described. First, the cap fixing part 50
As shown in FIG. 2, when the syringe main body 30 is mounted on the mounting portion 51 and the injection needle 20 is not used, the cap main body 70 is connected to the cap fixing portion 50 via the first break portion 90. It is fixed to. The cap body 70 is an operation handle.
It is fixed to the cap fixing part 50 via the second break part 91 of 80.

For this reason, if the first and second break portions 90 and 91 are not broken, it can be easily determined from the appearance that the injection needle 20 is unused. Further, since the unused injection needle 20 is stored in the storage portion 71 of the cap body 70 as shown in FIG. 2, it is safe and sanitary. Further, since the cap body 70 is connected to the cap fixing part 50 by the first and second break portions 90 and 91, it is possible to prevent the cap body 70 from being opened carelessly.

Next, in order to use the injection needle 20, it is necessary to hold the cap body 70 and bend it downward as shown in FIG. When the cap body 70 is bent downward, for example, as shown in FIG. 9, the first and second break portions 90 and 91 are broken. Next, the operator may hold the operation handle 80 of the cap body 70 and pull the operation handle 80 in the direction of the syringe body 30.

When the operating handle 80 is pulled in this manner, as shown in FIGS.
Rotate around. At this time, the injection needle 20 passes through the cutout portion 72 of the cap body 70 and comes out of the storage portion 71. Further, when the operation handle 80 is pulled, the locking groove 73 of the cap body 70 is engaged with the locking projection 52 of the cap fixing portion 50.

Here, when the operating handle 80 is further strongly pulled, it is pushed by the locking projection 52 of the cap fixing portion 50, and the groove width of the locking groove 73 of the cap body 70 is expanded by the elastic force of the resin. As a result, the locking projection 52 fits tightly into the locking groove 73. For this reason, when the cap body 70 is locked to the cap fixing part 50 and the exposed injection needle 20 is used, the cap body 70
Can be prevented from wobbling.

After use, hold the operation handle 80 and
The operating handle 80 may be pushed in the direction of the 20 needle tips. Operation handle
When pressing 80, as shown in Figs.
70 reverses around the hinge 60. At this time, the used injection needle 20 passes through the notch 72 of the cap body 70,
It fits in the storage section 71 again.

Then, as shown in FIG. 12, the tip of the used injection needle 20 hits the bottom of the cap body 70, and the rotation of the cap body 70 stops. Further, when the operating handle 80 is pushed, as shown in FIG. 12, the operating handle 80 is bent in a substantially V-shape by the elastic force of the resin, and the locking groove 73 of the cap body 70 and the locking projection 52 of the cap fixing portion 50 are formed. And the position match.

Here, when the operation handle 80 is pushed upward, the locking projection 52 is fitted into the locking projection 52 as shown in FIG. Then, when the pressing force of the operating handle 80 is released, the operating handle 80 which has been bent in a substantially V shape slightly expands due to the restoring force of the resin. At this time, the position of the locking groove 73 is relatively slightly retracted. Therefore, when the operation handle 80 is to be disengaged downward, the hook portion 53 of the locking projection 52 is hooked on the edge of the locking projection 52, and the locking hole 82 is
It will not come off from 52.

For this reason, as shown in FIG. 12, the cap body 70 is locked to the cap fixing portion 50, and it is possible to prevent the cap body 70 from being opened carelessly. Further, since the cap body 70 is bent upward with respect to the cap fixing portion 50 as shown in FIG. 12, it can be easily determined that the cap body 70 has been used in appearance.

Further, since the operation handle 80 is provided, the hand does not touch the vicinity of the needle tip of the used injection needle 20 and the needle tip does not face the operator. For this reason, there is no danger of accidentally sticking or touching the hand of the operator with the needle tip, and the operation is safe and sanitary. 13 to 15 show a second embodiment of the present invention. FIG. 13 is a partial plan view of an unused syringe, and FIG. 14 shows a state where the cap body of FIG. 13 is locked at a use position. Partial sectional view of syringe, FIG.
13 is a partial sectional view of the syringe showing a state where the cap body of FIG. 13 is locked at the discard position.

The feature of the second embodiment is that, as shown in FIGS. 13 to 15, the locking projection 54 of the cap fixing portion 50 is formed in an anchor shape. That is, the locking hole of the operation handle 80
As shown in FIG. 15, 82 is formed one size smaller than the locking projection 54 of the cap fixing portion 50. In the description of the second embodiment, the same components as those of the first embodiment described above are denoted by the same reference numerals, and description thereof will be omitted.

Thus, after the use of the injection needle 20, the locking projection 54 of the cap fixing portion 50 is inserted into the locking hole 82 of the operation handle 80 as shown in FIG. And passes through the locking hole 82 while being narrowed by the elasticity of the resin.
Then, when passing through the locking hole 82, it expands due to the restoring force of the resin and does not fall out of the locking hole 82. Therefore, the second
According to the embodiment, the locking projection 54 of the cap fixing portion 50 can be made more difficult to come off.

In the second embodiment, the cap fixing portion
Although the 50 locking projections 54 are formed in an anchor type, the present invention is not limited to this, and may be formed in a canoe type.

[0045]

Since the present invention has the above-described structure,
The following effects can be obtained. (Claim 1) According to the invention described in claim 1, it is possible to provide a syringe with a cap capable of preventing the cap from hanging during use.

In addition to the above, according to the second aspect of the present invention,
The following effects are obtained. That is, according to the second aspect of the present invention, whether the injection needle is unused or used can be visually determined in a state in which the cap is covered. (Claim 2) According to the invention of claim 2, the following effects are obtained.
You.

That is, according to the second aspect of the present invention,
By checking the state of the broken portion, it is possible to more reliably determine whether the injection needle is unused or used.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a syringe showing a state where a cap body is locked at a use position.

FIG. 2 is a plan view of an unused syringe.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a bottom view showing a state where a part of the cap body of FIG. 3 is crushed.

6 is a side view showing a state where a part of the cap body of FIG. 3 is crushed.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 3;

FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a partial cross-sectional view of the syringe showing a state in which a broken portion of the cap is broken.

FIG. 10 is a partial plan view of the syringe showing a state where the cap main body is locked at a use position.

FIG. 11 is a partial plan view of the syringe showing a state where the cap body is locked at the discard position.

FIG. 12 is a longitudinal sectional view of the cap of FIG. 11;

FIG. 13 shows a second embodiment of the present invention, and is a partial plan view of an unused syringe.

FIG. 14 is a partial cross-sectional view of the syringe showing a state where the cap body of FIG. 13 is locked in a use position.

FIG. 15 is a partial cross-sectional view of the syringe showing a state where the cap body of FIG. 13 is locked at the discard position.

[Explanation of symbols]

 10 Syringe 20 Injection needle 30 Syringe body 40 Cap 50 Cap fixing part 51 Attachment part 52 Locking projection 53 Hook 54 Anchor-type locking projection 60 Hinge part 70 Cap body 71 Storage part 72 Notch 73 Locking groove 80 Operation handle 81 Thin part 82 Lock hole 90,91 Breakage part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61M 5/32

Claims (2)

(57) [Claims] 1. A syringe body having an injection needle attached to a tip thereof, a cap for covering the injection needle of the syringe body, wherein the cap is fixed to a tip of the syringe body; A cap body rotatably connected to the cap fixing portion via a hinge portion, wherein the cap body has a storage portion for storing the injection needle, and a cutout communicating with the storage portion and allowing the injection needle to enter and exit. A cap-equipped syringe provided with a portion, wherein between the cap fixing portion and the cap body, the cap body is rotated about the hinge portion from a storage position where the injection needle is stored in the storage portion of the cap body. It is allowed, in the use position the needle is exposed, including the use time locking means for locking the cap body to the cap fixing part, between the cap body and the cap fixing part Key about the hinge portion from the use position where the needle is exposed
Turn the cap body upside down and insert the used needle into the
At the disposal position different from the storage position,
Locking hand at the time of disposal to lock the cap body to the cap fixing part
Injection with a cap, comprising a step
vessel. 2. A syringe body having an injection needle attached to a distal end thereof.
When, A cap for covering the injection needle of the syringe body, The cap is fixed to the tip of the syringe body.
Cap fixing part and this cap fixing part via a hinge part.
With a cap body rotatably connected, The cap body has a storage part for storing the injection needle,
Notch communicating with the storage part and allowing the injection needle to enter and exit
In a syringe with a cap, The key is provided between the cap fixing portion and the cap body.
Is the storage position where the injection needle is stored in the storage section of the cap body
Then, rotate the cap body around the hinge and
At the use position where the shooting needle is exposed,
In use, it is provided with a locking means for locking to a fixing part, Between the cap fixing portion and the cap body, Unused injection needles are stored in the storage section of the cap body.
Position the cap body against the cap fixing part.
Characterized by a breakable breakable portion
Syringe with cap.