JPH06218057A - Cover for needle of injector - Google Patents

Abstract

PURPOSE:To achieve prevention of infection with AIDS or the like by preventing an injection needle from sticking an human body by mistake without fail, and also, to prevent the missing of a cap (needle tip cover part). CONSTITUTION:This cover is provided with a mounting part 2 by which the cover is mountable on an injection needle N or a syringe C, and a needle tip cover part 3 which can be displaced to a second position P2 covering a needle tip Ns from a first position P1 separated to the side of the syringe C at least from the needle tip Ns in the mounting of the mounting part 2 on the injection needle N or the syringe C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle cover for a syringe which prevents the needle from accidentally sticking to a human body.

[0002]

2. Description of the Related Art Conventionally, hemophiliacs, diabetics, and the like often make injections to themselves or their parents often give injections to their children for the purpose of treatment. The needle tip of the needle is covered with a cap to protect the needle tip. FIG. 17 shows a syringe 50 in which an injection needle 52 is attached to the tip of a syringe 51. After using the syringe 50, a separately prepared cap 53 was held by hand H and covered on the needle tip 52s of the canula portion 54.

By the way, recently, AIDS infection has become a social problem, and since the syringe can become an infection route, handling of the syringe has become an extremely important problem.

However, the conventional cap 53 is not compatible with the injection needle 5.
Since it was worn from the front of the needle tip 52s (in the direction of the arrow X) when covering it with 2, there is a risk of accidentally sticking the injection needle 52 into the finger of the hand H, and in reality, for children of hemophilia patients. There is an urgent need to take measures, such as the case where a mother stabbed the used injection needle into her hand and a child reported that her mother was infected with AIDS.

The present invention has solved the problems existing in the prior art as described above, and it is possible to reliably prevent the injection needle from accidentally sticking to the human body, and to inject a syringe that can prevent infection such as AIDS. The purpose is to provide a needle cover.

[0006]

A cover 1 for an injection needle of a syringe according to the present invention has a mounting portion 2 which can be mounted on an injection needle N or a syringe C, and the mounting portion 2 is mounted on the injection needle N or a syringe C. At this time, the second position P2 that covers the needle tip Ns from the first position P1 that is at least separated from the needle tip Ns toward the syringe C side.
It is characterized in that it comprises a needle tip cover part 3 which can be displaced.

In this case, as an embodiment of the needle tip cover part 3, the cannula part Nc of the injection needle N is inserted, and the accommodating cylinder part 10 capable of accommodating the needle tip Ns is provided inside, and this accommodating cylinder part. The tip end of 10 has an insertion hole 10h through which the canula portion Nc is inserted, and a stopper surface 10f that prevents the needle tip Ns of the canula portion Nc housed inside the housing tubular portion 10 from being exposed to the outside is provided. Can be configured. Moreover, as another embodiment, the needle tip cover part 3 and the mounting part 2 are attached to the expansion / contraction part 11.
It is desirable that they are joined together by means of, preferably by integral molding. Furthermore, as another embodiment, when the needle tip cover portion 3 is attached to the attachment portion 2, the needle tip cover portion 3 can be attached slidably or can be coupled via the hinge portion 12. On the other hand, the needle tip cover part 3 may be integrally provided with the mounting part 2, and the mounting part 2 may be slidably mounted on the injection needle N or the syringe C.

[0008]

According to the needle cover 1 of the syringe according to the present invention, first, the mounting portion 2 is mounted on the injection needle N or the syringe C. In addition, the needle tip cover part 3 covers the needle tip Ns from the first position P1 which is at least separated from the needle tip Ns toward the syringe C when the attachment part 2 is attached to the injection needle N or the syringe C. Can be displaced.

Therefore, the needle tip cover portion 3 has the first position P.
Once in position 1, the needle N can be used normally. On the other hand, after using the syringe (injection needle), if the needle tip cover part 3 is displaced to the second position P2, the needle tip Ns is covered by the needle tip cover part 3. In this way, since the needle tip cover part 3 is moved from the position closer to the syringe C than the needle tip Ns, unlike the conventional cap mounted from the front of the needle tip Ns, the injection needle N is accidentally stabbed into the human body. Eliminates the risk of being killed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, a syringe having an injection needle cover according to the present invention will be described with reference to FIG.

The injector comprises a syringe C and an injection needle N.
The syringe C includes an outer cylinder portion Co and an inner cylinder portion Ci, and the inner cylinder portion C
i is slidably inserted into the outer cylinder portion Co. Further, a cylinder tip portion Cs is integrally formed on the front end surface of the outer cylinder portion Co, and an injection needle N is attached to the cylinder tip portion Cs. The injection needle N is composed of a hub portion Nh that can be attached to and detached from the barrel tip portion Cs and a canula portion Nc provided at the tip of the hub portion Nh, and the tip of the canula portion Nc is a diagonally sliced needle tip Ns.

Next, a cover 1 for an injection needle according to a first embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 2, the needle cover 1 according to the first embodiment has a mounting portion 2 mounted on the hub portion Nh of the injection needle, and a spiral formed continuously from the front end of the mounting portion 2 to the front. The elastic portion 11 and the needle tip cover portion 3 continuously formed from the front end of the elastic portion 11 to the front are provided, and the whole is integrally formed in a tubular shape with an elastic synthetic resin or the like.

In this case, the mounting portion 2 is formed in a tubular shape that fits into the hub portion Nh, and the inner peripheral surface of the mounting portion 2 is integrally formed with, for example, a ring-shaped ridge engaging portion 13n and, on the other hand, the hub. On the outer peripheral surface of the portion Nh, there is provided a ring-shaped recessed groove engaging portion 13s that fits into the protrusion engaging portion 13n, thereby preventing the both from coming off. Further, the needle tip cover portion 3 is provided with the accommodating cylinder portion 10 into which the canula portion Nc of the injection needle is inserted and capable of accommodating the needle tip Ns, and the stopper surface 10f integrally formed on the front surface of the accommodating cylinder portion 10. . The stopper surface 10f is the storage cylinder 1
It has a function of preventing the needle tip Ns of the canula portion Nc housed inside 0 from being exposed to the outside, and has a through hole 10h of approximately the same diameter through which the canula portion Nc is inserted at the center thereof. In addition, as shown in FIG. 3, the stopper surface 10f is preferably formed in a conical shape that bulges rearward inside the accommodating tubular portion 10.

Therefore, in the cover 1 for an injection needle according to the first embodiment, when the canula portion Nc is inserted into the insertion hole 10h and the attachment portion 2 is attached to the hub portion Nh, as shown in FIG. The elastic portion 11 is shortened, and the needle tip cover portion 3 is located at the first position P1 which is separated from the needle tip Ns toward the syringe C side. Therefore, the injection needle can be used as usual.
On the other hand, when the use is finished, hold the syringe C with one hand and move the needle tip cover part 3 forward with the other hand,
The spiral stretchable portion 11 extends as shown in FIG.
s can be housed inside the housing cylinder 10. Then, when the hand is released, the needle tip cover portion 3 is urged in the shortening direction by the elasticity of the expansion / contraction portion 11, so that the needle tip Ns comes into contact with the inner surface of the stopper surface 10f, and the needle tip Ns of the accommodating tubular portion 10. Securely housed inside. As a result, the needle tip cover portion 3 is fixed to the second position P2 that covers the needle tip Ns. Since the blood and the like attached to the canula portion Nc adheres to the outer surface of the stopper surface 10f that is recessed in a conical shape, contact with the hand or the like from the outside is prevented.

Next, an injection needle cover 1 according to a modification of the first embodiment will be described with reference to FIG. In FIG. 4, the same parts as those in FIG. 2 or 3 are designated by the same reference numerals.

A cover 1 for an injection needle according to a modified example has a telescopic portion 1.
1 is formed into a stretchable bellows shape. In addition, the storage cylinder portion 10
The stopper surface 10f is bulged forward, and an insertion hole 10h through which the cannula portion Nc is inserted is provided at an eccentric position of the stopper surface 10f, and is formed in a cylindrical shape from the inner surface of the stopper surface 10f. The above points are different from the basic embodiment shown in FIGS. As described above, at least the configuration of the expansion / contraction part 11 and the configuration and shape of the stopper surface 10f can be arbitrarily changed. Therefore, in the modified example as well, similar to the basic embodiment shown in FIGS. 2 and 3, the needle tip cover portion 3 is displaced to the first position P1 shown by the solid line and the second position P2 shown by the phantom line in FIG. You can

Next, the injection needle cover 1 according to the second embodiment of the present invention will be described with reference to FIG.

In the cover 1 for an injection needle according to the second embodiment, the needle tip cover portion 3 is integrally formed with the mounting portion 2, and the mounting portion 2 is slidably mounted on the hub portion Nh of the injection needle. To do. In this case, the hub portion Nh is formed in a tubular shape,
A ring-shaped projection locking portion 15 protruding outward is integrally formed at the front end of the outer peripheral surface thereof, while the projection locking portion 15 protruding inward at the rear end of the inner peripheral surface of the mounting portion 2 is formed. A ridge locking portion 16 that can be locked is provided at 15. On the other hand, the needle tip cover portion 3 is formed in a pipe shape having a relatively small diameter that protrudes forward from the front end surface 2f of the mounting portion 2, and the canula portion Nc is inserted therein. In addition, a spring 17 is arranged inside the needle tip cover portion 3 to bias the entire needle cover 1 forward. Furthermore, the pin 18p is provided on the outer peripheral surface of the hub portion Nh.
On the other hand, the mounting portion 2 is provided with an L-shaped slit 18s.

Therefore, as shown by the solid line in FIG. 5, when the mounting portion 2 is slidably mounted on the hub portion Nh and the pin 18p is housed in the slit 18s and locked, the needle tip cover portion. 3 is located at the first position P1 which is separated from the needle tip Ns toward the syringe C side. Therefore, the injection needle can be used as usual. On the other hand, when the use is completed, the mounting portion 2 is rotated on the hub portion Nh, and the slit 18s and the pin 18
When the locking of p is released, the injection needle cover 1 moves forward due to the elasticity of the spring 17, and the needle tip cover portion 3 is shown in FIG.
Is located at a second position P2 indicated by a virtual line. This allows
The needle tip Ns of the canula portion Nc is housed inside the needle tip cover portion 3.

Although the spring 17 is used in the second embodiment, the spring 17 may be omitted. In this case, by using a click mechanism portion (concave and convex engaging portion) or a magnet, It can be fixed at the position P1 or the second position P2. Further, in the second embodiment, the hub portion Nh
Although the mounting portion 2 is directly mounted on the mounting portion 2, the mounting portion 2 is composed of a slidable tubular inner mounting portion and an outer mounting portion, and the needle tip cover portion 3 is integrally formed on the outer mounting portion. The inner mounting portion may be mounted on the hub portion Nh. The mounting structure in this case can be configured as shown in FIG.

Next, an injection needle cover 1 according to a modification of the second embodiment will be described with reference to FIGS. 6 and 7. 6 and 7, the same parts as those in FIG. 5 are designated by the same reference numerals.

A cover 1 for an injection needle according to a modified example has a cylindrical needle tip cover portion 3 slidably mounted on a canula portion Nc.
The mounting part 2 and the mounting part 2 are connected by expandable link mechanism parts 21 and 22 arranged on both left and right sides, and each link mechanism part 21, 22 is a pair of front and rear link parts 21 respectively.
x, 21y, 22x, 22y. In this case, the link mechanism parts 21 and 22 may use the hinge part 12 formed of a flexible synthetic resin or the like as shown in FIG. 11 described later. The mounting portion 2 is mounted on the hub portion Nh not shown in the figure, and the mounting structure in this case can be configured in the same manner as in FIG. 3 (or FIG. 11).

Therefore, as shown by the solid line in FIG. 6, if the needle tip cover portion 3 is brought close to the mounting portion 2, the needle tip cover portion 3 is separated from the needle tip Ns toward the syringe C and is located at the first position P1. Located in. Therefore, the injection needle can be used as usual.
On the other hand, if the needle tip cover portion 3 is positioned at the intermediate position Pm of the canula portion Nc as shown by the phantom line in FIG. 6, the link mechanism portion spreads laterally like 21 m and 22 m shown by the phantom line. Therefore, for example, the link mechanism portions 21m and 22m can be fixed to the patient's arm or the like with the tapes 23 and 24, and can be used as an injection needle for infusion. On the other hand, when the use is completed, the needle tip cover part 3 is moved forward to be positioned at the second position P2 shown in FIG. 7, and the needle tip Ns of the canula portion Nc is housed inside the needle tip cover part 3. To be done.

Next, an injection needle cover 1 according to a third embodiment of the present invention will be described with reference to FIGS.

The injection needle cover 1 according to the third embodiment comprises a needle tip cover portion 3 and a mounting portion 2 which are rotatably coupled via a hinge portion 12. In this case, the mounting structure of the mounting portion 2 and the hub portion Nh can be configured similarly to FIG. 3 (or FIG. 11). Further, the needle tip cover portion 3 is formed in an elongated channel shape along the canula portion Nc, and the link portion 2 is formed from one end thereof.
6 is extended, and the tip of the link part 26 is rotated by the rotating part 2.
It attaches to the mounting part 2 through 7. The needle tip cover 3
The cross-section may be formed in a U-shape in cross section as shown in FIG. 9, or may be formed in a circle having slits 28 as shown in FIG. In this case, when it is formed in a U shape, a magnetized metal is used. Also, the slit 28
In the case of forming a circular shape having a groove, the guide pieces 29i and 29j that guide the insertion of the canula portion Nc at the inner edge portion of the slit 28 and prevent the canula portion Nc from coming off are formed inward. Is desirable. At this time, FIG.
If the diameter of the needle tip cover portion 3 is increased as indicated by a phantom line at 0, the canula portion Nc can be easily inserted and is hard to come off.

Therefore, the injection needle cover 1 according to the third embodiment is located at the first position P1 when the needle tip cover portion 3 is superposed on the syringe C as shown by the solid line in FIG. Therefore, the injection needle can be used as usual. On the other hand, when the use is finished, the needle tip cover portion 3 can be pivotally displaced forward about 180 ° about the pivot portion 27 as a fulcrum, and the needle tip cover portion 3 can be moved to the second position P2 indicated by a virtual line in FIG. The canula portion Nc containing Ns is covered by the needle tip cover portion 3.

Next, a cover 1 for an injection needle according to a modification of the third embodiment will be described with reference to FIGS. 11 to 13. 11 to 13, the same parts as those in FIGS. 8 to 10 are designated by the same reference numerals.

A cover 1 for an injection needle according to a modified example has a hub portion N.
The hinge part 12 and the mounting part 2 and the needle tip cover part 3 mounted on the h
8 is the same as the basic embodiment shown in FIG. 8, but the basic embodiment is that the needle tip cover portion 3 is composed of a pair of elongated cover halves 3a and 3b along the canula portion Nc. Different from Each of the cover halves 3a and 3b has a semicircular cross-section and is foldable by a second hinge portion 3h. As a result, when they are overlapped with each other, they have a pipe shape capable of accommodating the canula portion Nc therein. In this case, the fixing structure of the cover halves 3a and 3b is, as shown in FIG. 11 (FIG. 12), one cover half 3a on each side of the other cover half 3a.
The engaging piece portions 31p and 31q that engage with b may be integrally provided, or as shown in FIG. 13, one cover half portion 3b is provided with protrusions 32x and 32x and the other cover half portion 3b is provided. By providing the holes 32y and 32y in the portion 3a, the both may be coupled. Also, the mounting portion 2 and the needle tip cover portion 3
The hinge portion 12 is integrally formed of synthetic resin, and at this time, the hinge portion 12 that is flexibly bent is formed by forming a thin portion between the mounting portion 2 and the needle tip cover portion 3. In addition,
The mounting portion 2 can be mounted so as to cover the outer surface of the hub portion Nh as shown in FIG. 11, or can be mounted via the engagement portion of the ridge and the groove as shown in FIG. In this case, it is desirable that the mounting portion 2 be formed in a tubular shape as shown in FIG. 11 and also be formed in a C-shaped cross section by the axial dividing groove 30, so that the mounting portion 2 can be flexibly applied to the hub portions Nh having different diameters. Can be installed.

Therefore, as shown by the solid line in FIG. 11, if the needle tip cover portion 3 is folded in two and placed along the syringe C, it is located at the first position P1 and the injection needle can be used as usual. On the other hand, when the use is finished, the cover halves 3a and 3b of the needle tip cover part 3 are opened and displaced forward, and further,
If the canula portion Nc is sandwiched between the cover halves 3a and 3b, it is positioned at the second position P2 indicated by the phantom line, whereby the needle tip N
The canula portion Nc containing s is covered by the needle tip cover portion 3.

Next, the injection needle cover 1 according to the fourth embodiment of the present invention will be described with reference to FIG.

In the injection needle cover 1 according to the fourth embodiment, the needle tip cover portion 3 and the mounting portion 2 are integrally formed, and the mounting portion 2 is slidably mounted on the syringe C. In this case, a ring-shaped projection locking portion 35 protruding outward is provided on the outer peripheral surface of the hub portion Nh, and the projection locking portion 35 is locked at the rear end of the inner peripheral surface of the mounting portion 2. A possible ring-shaped groove engaging portion 36 is provided. Further, the needle tip cover portion 3 is formed in a pipe shape protruding forward from the front end surface of the mounting portion 2. In this case, the whole is made of transparent synthetic resin,
Make the inside of syringe C visible.

Therefore, if the mounting portion 2 is located rearward,
The needle tip cover part 3 is located at a first position P1 which is separated from the needle tip Ns toward the syringe C side. Therefore, the injection needle can be used as usual. On the other hand, when the use is finished, the mounting portion 2
Is slid forward, and the concave groove engaging portion 36 is locked and fixed to the ridge locking portion 35, the needle tip cover portion 3 is positioned at the second position P2 shown in phantom in FIG. As a result, the needle tip Ns is housed inside the needle tip cover part 3.

Next, a cover 1 for an injection needle according to a modification of the fourth embodiment will be described with reference to FIGS. 15 and 16. 15 and 16, the same parts as those in FIG. 14 are designated by the same reference numerals.

A modified example is a needle cover 1 including a mounting portion 2.
Even if the container is molded with a non-transparent synthetic resin, the mounting portion 2 has three elastic pieces 2 so that the inside of the syringe C can be seen.
It is formed by a, 2b and 2c. In addition, in order to strengthen the retaining force, the protrusion locking portion 35 and the groove engaging portion 36.
It is desirable to form the cross-section of the prism in a square shape.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment.
For example, the mounting portion may be integrally formed in advance with the hub portion, the syringe, or the like. Further, the injection needle and the syringe may be an integrated type (disposable type). Furthermore, you may implement by combining each Example. In addition, the detailed configuration, shape, material, quantity, etc. can be arbitrarily changed without departing from the scope of the present invention.

[0038]

As described above, the cover for the injection needle of the syringe according to the present invention has a mounting portion which can be mounted on the injection needle or the syringe, and at least the needle tip when the mounting portion is mounted on the injection needle or the syringe. Also has a needle tip cover portion that is displaceable from a first position that is separated toward the syringe side to a second position that covers the needle tip, so that the following remarkable effects are achieved.

The injection needle can be surely prevented from accidentally sticking to the human body, infections such as AIDS can be prevented, and safety can be dramatically improved.

Since the needle tip cover (cap) is always provided in the syringe, there is no risk of forgetting to prepare the cap or losing the cap, for example.

[Brief description of drawings]

FIG. 1 is a side view of a syringe provided with a cover for a needle according to a first embodiment of the present invention,

FIG. 2 is a side view of the injection needle cover in which the needle tip cover portion according to the first embodiment is the first position;

FIG. 3 is a partial cross-sectional side view of a cover for an injection needle in which a needle tip cover portion according to a first embodiment is at a second position,

FIG. 4 is a partial sectional side view of a cover for an injection needle according to a modification of the first embodiment,

FIG. 5 is a partial cross-sectional side view of a cover for an injection needle according to a second embodiment of the present invention,

FIG. 6 is a plan view of an injection needle cover according to a modification of the second embodiment in which the needle tip cover part is at the first position;

FIG. 7 is a plan view of an injection needle cover according to a modification of the second embodiment, in which the needle tip cover part is at the second position;

FIG. 8 is a side view of a cover for an injection needle according to a third embodiment of the present invention,

9 is a sectional view taken along line AA in FIG.

10 is a cross-sectional view taken along the line AA in FIG. 8 according to another example,

FIG. 11 is a partial cross-sectional side view of an injection needle cover according to a modification of the third embodiment,

12 is a sectional view taken along line BB in FIG.

13 is a sectional view taken along line BB in FIG. 11 according to another example,

FIG. 14 is a sectional side view of an injection needle cover according to a fourth embodiment of the present invention,

FIG. 15 is a side view of an injection needle cover according to a modification of the fourth embodiment,

16 is a front view of the needle cover shown in FIG.

FIG. 17 is a cover (cap) for an injection needle according to the related art.
Illustration of how to use

[Explanation of symbols]

 1 Injection Needle Cover 2 Attachment Part 3 Needle Tip Cover Part 10 Storage Cylinder 10h Insertion Hole 10f Stopper Surface 11 Stretchable Part 12 Hinge Part N Injection Needle Ns Needle Tip Nc Cannula Part C Syringe P1 First Position P2 Second Position

Claims (9)

[Claims] 1. A mounting part that can be mounted on an injection needle or syringe, and a second cover that covers the needle tip from a first position at least separated from the needle tip toward the syringe when the mounting part is mounted on the injection needle or syringe. A cover for an injection needle of a syringe, comprising a needle tip cover part that can be displaced in a position. 2. The cover for an injection needle of a syringe according to claim 1, wherein the needle tip cover portion has an accommodating cylinder portion through which the canula portion of the injection needle is inserted and which can accommodate the needle tip. 3. A stopper surface having an insertion hole through which the canula portion is inserted, and a stopper surface for preventing the needle tip of the canula portion accommodated inside the accommodation tubular portion from being exposed to the outside. It has, The cover for injection needles of the syringe of Claim 2 characterized by the above-mentioned. 4. The cover for an injection needle of a syringe according to claim 1, wherein the needle tip cover part is coupled to the mounting part via an expansion / contraction part. 5. The cover for an injection needle of a syringe according to claim 4, wherein the needle tip cover portion, the expansion / contraction portion and the mounting portion are integrally formed. 6. The cover for an injection needle of a syringe according to claim 1, wherein the needle tip cover part is provided slidably on the mounting part. 7. The cover for an injection needle of a syringe according to claim 1, wherein the needle tip cover part is coupled to the mounting part via a hinge part. 8. The injection needle for a syringe according to claim 1, wherein the needle tip cover part is provided integrally with the mounting part, and the mounting part is slidably mounted on the injection needle or syringe. cover. 9. The mounting portion is formed in a tubular shape, and is formed in a C-shaped cross section by an axial dividing groove.
A cover for a needle of the described syringe.