JP3249703B2 - 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.).

The above-mentioned conventional cap has a cap fixing portion fixed to the distal end of the syringe main body, and a cap main body rotatably connected to the cap fixing portion via a hinge portion. The above-described conventional 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.

[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, if the cap is turned around the hinge part and closed after use, it will not be different from an unused syringe, so it will be difficult to know whether it is an unused injection needle or a used injection needle. There was a second problem. (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, the invention according to claim 1 has been made in view of the above-mentioned second problem of the prior art, and has the following object. That is, claim 1
The described invention is such that it is possible to determine visually whether the injection needle is unused or used with the cap placed thereon. In addition to this, the invention according to claim 1 can prevent a used injection needle from being unnecessarily exposed from the cap. (Claim 2) On the other hand, the invention according to claim 2 is made in view of the above-mentioned second problem of the conventional technique, and covers whether the injection needle is unused or used. It is an object of the present invention to provide a syringe with a cap which can be visually identified in a state where the syringe is in a closed state.

[0006] In addition to the above, the invention according to claim 2 prevents the used injection needle from being unnecessarily exposed from the cap. (Claim 3) The invention according to claim 3 is an embodiment of the invention according to claim 2 described above.
The present invention has been made in view of the above-described first problem of the related art in addition to the object, and has the following object.

[0007] That is, an object of the present invention is to provide a syringe with a cap capable of preventing the cap from hanging during use. (Claim 4) The invention described in claim 4 aims at the following points. Sand
According to a fourth aspect of the present invention, the operation projection is
That can be opened and closed.
You.

[0008]

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, between the cap fixing portion (50) and the cap body (70), for example, as shown in FIG. (2
0) is exposed in the use position (see, for example, FIG. 2), the cap body (70) is urged in a direction for fixing the cap body to the cap fixing portion (50), and the cap body (70) is
When the (70) is reversed, a spring means (for example, a spring hinge 80) for urging the cap body (70) toward the direction in which the injection needle (20) is located in the storage portion (71) is formed. ing.

[0010] In addition, the first aspect of the present invention has the following features. That is, the storage section (7
Inside 1), for example, as shown in FIG. 8, an unused storage space facing the notch (72) for storing the unused injection needle (20).
(73) and the storage space (74) that communicates with the unused storage space (73) and stores the used injection needle (20) when discarded.
1) bisect the inside and projecting part (75) protruding into the storage part (71)
Is formed. (Claim 2) The invention according to claim 2 has the following features.

That is, the storage portion (71) of the cap body (70)
Inside, for example, as shown in FIG. 8, facing the notch (72),
Unused storage space (73) for storing unused injection needles (20)
The storage space (71) is divided into a storage space (74) that communicates with the unused storage space (73) and stores the used injection needle (20). A projection (75) projecting into (71) is formed. (Claim 3) The invention according to claim 3 is an embodiment of the invention according to claim 2 described above.
The following points are featured in addition to the feature points .

That is, between the cap fixing portion (50) and the cap body (70), for example, as shown in FIG. (2
0) is exposed in the use position (see, for example, FIG. 2), the cap body (70) is urged in a direction for fixing the cap body to the cap fixing portion (50), and the cap body (70) is
When the (70) is reversed, the cap main body faces in the direction where the used needle (20) is located in the storage space (74) at the time of disposal.
Spring means for biasing (70) (eg spring hinge 80)
Is formed. (Claim 4) The invention according to claim 4 is characterized by the following points.

First, a cap fixing portion (50) and a cap book
For example, as shown in FIG.
Rotate the cap body (70) about the part (60), and
(0) is exposed, use the cap body (70)
While urging in the direction of fixing to the cap fixing part (50),
When the cap body (70) is reversed around the hinge (60)
In the direction in which the injection needle (20) is located in the storage section (71).
Spring means (for example, a
A ring hinge 80) is formed.

Second, a spring means (for example, a spring hinge)
For example, as shown in FIG.
The formed operation projection (83) is formed.

[0015]

[Action] (Claim 1) According to the invention of claim 1, the following operation is achieved. That is, as shown in FIG. 2, for example, the cap main body (70) is opened from the unused state around the hinge (60) against the urging force of the spring means (for example, the spring hinge 80). When rotated, for example, as shown in FIG.
(20) passes through the notch (72) of the cap body (70)
Exposed outside from 1).

In the use position where the injection needle (20) is exposed, the biasing direction of the spring means (for example, the spring hinge 80) is reversed as shown in FIG.
(70) is urged toward the cap fixing portion (50) by the urging force of the spring means (for example, the spring hinge 80).
For this reason, it is possible to prevent the cap body (70) from accidentally hanging during use.

After use, when the cap body (70) is rotated in the closing direction about the hinge portion (60) against the urging force of the spring means (for example, the spring hinge 80), as shown in FIG. 10, for example. The used injection needle (20) is stored in the storage section (71) of the cap body (70). At this time, the biasing direction of the spring means (for example, the spring hinge 80) is reversed, and the cap body (70) is moved after use by the biasing force of the spring means (for example, the spring hinge 80) as shown in FIG. Of the injection needle (20) is urged toward the direction located in the storage portion (71).

Therefore, it is possible to prevent the cap body (70) from being opened carelessly and exposing the used injection needle (20). This
In addition, according to the first aspect of the invention, the following operation is provided. That is, the unused injection needle (20) is stored in the unused storage space (73) of the cap body (70), for example, as shown in FIG.

For this reason, since the unused storage space (73) faces the notch (72) as shown in FIG. 8, for example, the cap body (70) can be quickly opened. On the other hand, the used syringe is, for example, as shown in FIG.
It passes through the notch (72) of (70) and enters the unused storage space (73). Next, the used syringe goes further back while avoiding the protrusion (75) projecting into the storage portion (71), and is stored in the storage space at the time of disposal (74) as shown in FIG. 9, for example. Is done.

For this reason, the used syringe is, for example, as shown in FIG.
As shown in the figure, since the cap body (70) is located at the back of the storage part (71), even when the cap body (70) rotates in the It can be prevented from being easily exposed to the outside. Further, since the used syringe and the unused injection needle (20) are housed in different positions as shown in FIGS. 2 and 10, the injection state can be seen from the state of attachment of the cap body (70). Whether the needle (20) has been used or not used can be easily discriminated visually from the appearance. (Claim 2) According to the invention described in claim 2, the invention described in claim 1 is substantially the same as the invention described in claim 1.
It has a similar effect. (Claim 3) According to the invention of claim 3, according to the above-mentioned claim 2,
In addition to the operation of the invention, the operation is substantially the same as that of the invention described in claim 1.
Play (Claim 4) According to the invention described in claim 4, the following operation is achieved.
You.

That is, according to the fourth aspect of the present invention,
For example, as shown in FIG.
The cap body (70) can be opened and closed.

[0022]

1 to 10 show a first embodiment of the present invention. FIG. 1 is a partial plan view of a syringe showing an opened state of a cap body. FIG. 2 is a plan view of the syringe showing an opened state of the cap body. 3 to 7 show the cap in a molded state, FIG. 3 is a plan view, FIG. 4 is a bottom view of FIG. 3, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. FIG. 7 is a right side view of FIG.

8 and 9 show the storage positions of the injection needles, FIG. 8 is a partial sectional view of the cap body showing the storage positions of the unused injection needles, and FIG. 9 shows the storage positions of the injection needles after use. FIG. FIG. 10 corresponds to FIG. 1 and shows a partial plan view of the syringe showing a discarded state. In FIG. 2, 10 is
This shows a medical syringe, and this syringe 10 is roughly divided into
The syringe body 30 includes a syringe body 30 having a syringe needle 20 attached to a distal end thereof, and a cap 40 for covering the syringe needle 20 of the syringe body 30.

The cap 40 can be roughly classified as shown in FIG.
As shown in FIG. 5, the device includes a cap fixing portion 50 fixed to the distal end portion of the syringe main body 30, and a cap body 70 rotatably connected to the cap fixing portion 50 via a hinge portion 60. 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 FIGS. 2 and 3, 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. The cap body 70
As shown in FIG. 8, a storage portion 71 for storing the injection needle 20 is provided.
And a notch 72 that communicates with the storage section 71 and through which the injection needle 20 can enter and exit. As shown in FIG. 2, the cap 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. 2 and 4, 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. The notch 72 has a rectangular shape that is long in the axial direction of the injection needle 20.

As shown in FIG. 8, in the storage section 71,
An unused storage space 73 that faces the notch 72 and stores the unused injection needle 20, and a storage storage device that communicates with the unused storage space 73 and stores the used needle 20 after use. Empty section 74 and storage section
The inside of the housing 71 is divided into two parts, and a projection 75 projecting into the storage part 71 is formed. The two storage cavities 73 and 74 communicate with each other via a communication portion 76 through which the injection needle 20 can pass.

As shown in FIG. 8, the protruding portion 75 protrudes laterally in a triangular shape, and its upper surface is a tapered surface obliquely inclined downward toward the free end. For this reason, the used injection needle 20 descends while being guided by the tapered surface of the upper surface of the protruding portion 75, and falls toward the bottom of the storage portion 71, that is, the storage space 74 at the time of disposal, as shown in FIG. I do. On the other hand, as shown in FIG. 9, the lower surface of the protruding portion 75 is a reverse tapered surface that is obliquely inclined downward toward the free end. For this reason, the used injection needle 20 that has reached the end of the storage space 74 at the time of disposal has an outlet of the storage space 74 at the time of disposal narrowed by the reverse tapered surface of the lower surface of the projection 75, The used injection needle 20 that has entered the terminal portion is difficult to come out of the storage space 74 at the time of disposal.

In the embodiment shown in the drawings, the protrusion 75
Is projected in a triangular shape, but is not limited to this, and may be projected in a rectangular or semicircular shape. As shown in FIGS. 3 and 5, between the cap fixing portion 50 and the cap main body 70, the cap main body 70 is rotated around the hinge portion 60, and the use position where the injection needle 20 is exposed (FIG. 1). ), The cap body
When the cap 70 is urged in the direction of fixing the cap to the cap fixing portion 50 and the cap main body 70 is reversed around the hinge 60, the cap main body is moved in the direction in which the injection needle 20 is located in the storage portion 71. Spring means for biasing 70 are formed.

As shown in FIG. 5, the spring means comprises a spring hinge 80 bent in a U-shape with the hinge portion 60 interposed therebetween. As shown in FIG. 5, the spring hinge 80 has one end of the U-shape connected to the cap fixing portion 50 via the thin portion 81, and the other end connected to the cap body 70 via the thin portion 82. ing. In the embodiment shown in the drawings, a spring hinge 80 bent in a U-shape is formed as the spring means. However, the spring means is not limited to the spring hinge 80, and the spring hinge 80 is not limited to the U-shape. In short, any structure having a structure in which the biasing direction is reversed during opening and closing of the cap body 70 may be used.

The cap fixing portion 50 and the cap body 70
As shown in FIG. 2, a stopper means for restricting the rotation angle of the cap main body 70 with respect to the cap fixing portion 50 is formed at the position where the cap main body 70 is closed. In the present embodiment, the stopper means is a cap body.
3 and 5, specifically, a pair of left and right stopper pieces 77, 77 extending rearward from the left and right side surfaces of the cap body 70 toward the cap fixing portion 50, as shown in FIGS. .

As shown in FIG. 4, the left and right stopper pieces 77 restrict the rotation angle of the cap body 70 by the step portions on the inner surfaces facing each other contacting the end face of the cap fixing portion 50. The position where the rotation angle is regulated by the left and right stopper pieces 77 is an unused state in which the unused injection needle 20 is stored in the unused storage space 73 as shown in FIG. Then, when the cap main body 70 is opened and the injection needle 20 is used, and the cap main body 70 is closed again, the cap main body 70 is positioned at a position where the step portions of the left and right stopper pieces 77 abut against the end faces of the cap fixing portion 50. To stop once. Then the cap body
When the 70 is further rotated upward, the left and right stopper pieces 77
It is pushed by the cap fixing portion 50 and opens right and left outward against the elastic force of the resin. Therefore, the cap body 70 is bent upward in a V-shape as shown in FIG.

In the embodiment shown in the drawings, the left and right stopper pieces 77 are formed on the cap body 70 as the stopper means, but they may be formed on the cap fixing portion 50 side, or the stopper pieces 77 may be formed. The step portion formed on the side surface may be formed on the cap fixing portion 50 side. Next, a procedure for using the cap 40 having the above-described configuration will be described.

First, the unused injection needle 20 is stored in the unused storage space 73 of the cap body 70 as shown in FIG. Therefore, it is safe and sanitary. Next, in order to use the injection needle 20, it is sufficient to hold the left and right sides of the cap main body 70 and pull it toward the side where the hinge portion 60 is located, for example, downward. When the cap body 70 is pulled downward, as shown in FIG. 1, the cap body 70 rotates downward around the hinge 60.

At this time, the interval between both ends of the spring hinge 80 is widened. For this reason, the urging force for closing the cap body 70 is exerted by the restoring force of the spring hinge 80 in response to the force for opening the cap body 70. Therefore, when opening the cap body 70, use the spring hinge 80
It is necessary to pull the cap body 70 against the urging force of the cap.

When the cap body 70 is opened halfway, the gap between the two ends of the spring hinge 80 is reduced. Therefore, even if the force for pulling the cap body 70 is released, the cap body 70 retains the accumulated spring hinge.
It opens vigorously by the elastic force of 80. Thus, when the cap body 70 opens, the spring hinge 80 returns to a stable state,
The cap body 70 is held in the open state.

Accordingly, the cap body 70 is held in the open state, and it is possible to prevent the cap body 70 from wobbling when the exposed injection needle 20 is used. After use, the side of the cap body 70 where the hinge portion 60 is located, for example, the lower surface may be pushed upward. When the cap body 70 is pushed up, as shown in FIG. 10, the cap body 70 returns upward around the hinge part 60 and rotates.

At this time, since the interval between both ends of the spring hinge 80 is once opened, it is necessary to push up the cap body 70 against the urging force of the spring hinge 80. However, when the cap body 70 is pushed up halfway, the gap between both ends of the spring hinge 80 is reduced this time. For this reason,
Even when the force for pushing up the cap body 70 is released, the cap body 70 closes vigorously due to the accumulated elastic force of the spring hinge 80.

At this time, the used injection needle 20 fits into the unused storage space 73 through the cutout 72 of the cap body 70 as shown in FIG. Further, when the cap body 70 is pushed up, the used injection needle 20 is guided by the tapered surface of the upper surface of the projection 75 and descends through the communication part 76, and FIG.
As shown in the figure, the bottom of the storage section 71,
Fall towards 74.

Therefore, in the state where the syringe 10 is discarded, when the cap body 70 tries to open, the used injection needle 20
It is guided by the reverse taper surface on the lower surface of the projection 75 and proceeds toward the inside of the storage space 74 at the time of disposal, so that it is difficult to come out of the storage space 74 at the time of disposal. Further, since the cap body 70 is bent upward with respect to the cap fixing portion 50 as shown in FIG. 10, it can be easily determined that the cap body 70 has been used in appearance.

Further, since the cap body 70 can be opened and closed by holding it, 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. FIG.
FIG. 1 shows a second embodiment of the present invention.
FIG. 4 is a partial plan view of the syringe showing an open state of the cap body.

The feature of the second embodiment is that an operation projection 83 is formed on a spring hinge 80 as shown in FIG. As shown in FIG. 11, the operation protrusion 83 protrudes outward in a Y-shape from the center of the outer periphery of the U-shaped bent portion of the spring hinge 80. According to the second embodiment, the cap main body 70 can be opened and closed by holding the operation projection 83.

The shape and location of the operation projection 83 are not limited to those of the second embodiment shown in FIG. 11, and the operation projection 83 may be formed on the cap body 70 side.

[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, the invention according to claim 1 has the following features.
It has the following effects. That is, according to the first aspect of the present invention,
According to this, it is possible to visually determine whether the injection needle is unused or used with the cap on. In addition , according to the first aspect of the invention, it is possible to prevent the used injection needle from being unnecessarily exposed from the cap. (Claim 2) According to the invention as set forth in claim 2, it is possible to provide a syringe with a cap so that whether the injection needle is unused or used can be visually determined in a state where the cap is covered. it can.

In addition to the above, according to the second aspect of the present invention,
Thus, it is possible to prevent the used injection needle from being unnecessarily exposed from the cap. (Claim 3) The invention according to claim 3 is an embodiment of the invention according to claim 2 described above.
In addition to the function, the following effects are obtained.

That is, according to the third aspect of the present invention,
A syringe with a cap capable of preventing the cap from wobbling during use can be provided. (Claim 4) According to the invention described in claim 4, the following effects are obtained.
You. That is, according to the fourth aspect of the present invention, the operation protrusion is provided.
To open and close the cap body.

[Brief description of the drawings]

FIG. 1 is a partial plan view of a syringe showing an opened state of a cap body.

FIG. 2 is a plan view of the syringe showing an opened state of the cap body.

FIG. 3 shows a cap in a molded state, which is a plan view.

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

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is a left side view of FIG. 3;

FIG. 7 is a right side view of FIG. 3;

FIG. 8 is a partial cross-sectional view of the cap body showing a storage position of an injection needle, showing a storage position of an unused injection needle.

9 is a partial cross-sectional view corresponding to FIG. 8 and illustrating a storage position of the used injection needle.

FIG. 10 is a partial plan view of the syringe corresponding to FIG. 1 and showing a discarded state;

FIG. 11 shows a second embodiment of the present invention, and is a partial plan view of a syringe showing an opened state of a cap body.

[Explanation of symbols]

 10 Syringe 20 Injection needle 30 Syringe body 40 Cap 50 Cap fixing part 51 Attachment part 60 Hinge part 70 Cap body 71 Storage part 72 Notch part 73 Storage empty part when not used 74 Storage empty part when discarded 75 Projection part 76 Communication part 77 Stopper Piece 80 Spring hinge 81,82 Thin part 82 Operation protrusion 90,91 Breakage part

Continuation of the front page (56) References JP-A-6-114104 (JP, A) JP-A-6-343697 (JP, A) JP-A-1-62849 (JP, U) JP-A 64-17248 (JP) , U) Japanese Utility Model Showa 63-189255 (JP, U) Japanese Utility Model Application Hei 3-73155 (JP, U) Table 6-6-503978 (JP, A) (58) Fields surveyed (Int. Cl. ⁷ , DB) Name) A61M 5/32

Claims (4)

(57) [Claims] 1. A syringe body having an injection needle attached to a tip thereof, and 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 part via a hinge part, wherein the cap body includes a storage part for storing the injection needle,
A syringe with a cap having a cutout communicating with the storage section and through which an injection needle can enter and exit, wherein the cap body is rotated around the hinge section between the cap fixing section and the cap body to perform injection. In the use position where the needle is exposed, the cap body is urged in the direction of fixing the cap body to the cap fixing portion, and when the cap body is reversed around the hinge portion, the injection needle faces the direction of being located in the storage portion. forming a spring means for biasing the cap body Te, the storage portion of the cap body, facing the notch, unused
The unused storage space for storing the injection needle when
Disposal that communicates with the storage space for use and stores the used needle after use
The inside of the storage part is divided into two parts with the empty storage part, and it projects into the storage part
Note with a cap characterized by forming a protruding part
Projectile. 2. A syringe body having a syringe needle attached to a tip thereof, and a cap for covering the syringe 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 part via a hinge part, wherein the cap body includes a storage part for storing the injection needle,
In a syringe with a cap, which is provided with a cutout portion which communicates with the storage portion and through which an injection needle can enter and exit, the storage portion of the cap body faces the cutout portion,
The inside of the storage part is divided into two parts: an unused storage space for storing the unused injection needle, and a disposal storage space for communicating with the unused storage space for storing the used injection needle. A syringe with a cap, wherein a projection protruding into the storage part is formed. 3. A cap body is rotated between a cap fixing portion and a cap body around a hinge portion, and is urged in a direction of fixing the cap body to the cap fixing portion at a use position where an injection needle is exposed. And, when the cap body is reversed around the hinge part, a spring means is formed to urge the cap body toward the direction in which the used injection needle is located in the storage space when discarded. To be
The syringe with a cap according to claim 2 . 4. 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 a tip of the syringe body.
A cap fixing part and a hinge part
And a cap body rotatably connected to the The cap body, a storage unit for storing the injection needle,
A notch that communicates with this storage part and allows the injection needle to enter and exit
In a syringe with a cap equipped with Between the cap fixing portion and the cap body,
Rotate the cap body around the syringe to expose the injection needle
The cap body to the cap fixing part
To the direction in which the hinge is fixed.
When the cap body is reversed, the injection needle
A spring hand that urges the cap body toward the direction in which it is located
Form a step, The spring means has an outwardly projecting operation projection.
A syringe with a cap.