JP2000037456A - Puncturing adjustment tool for injector needle and injector assembly with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely adjust the puncturing depth of an injector needle to a target depth by comprising a puncturing adjustment tool which is a cylindrical body extended coaxially with an injector, comprising an injector needle inside, and fixed to an injector needle hub at its one end, and contacting this puncturing adjustment tool to the epidermis. SOLUTION: An injector needle assembly 1 comprises an injector needle puncturing adjustment tool 2, an injector needle 2 and a hub 4. The injector needle puncturing adjustment tool 2 is, for example, cylindrically formed, its length is determined so that a point of an injector needle 3 is projected from the adjustment tool 2 in a state that it is fixed at a connection part 5, and it is made of a material such as a transparent plastic resin. The adjustment tool is used in such manner that the injector needle 3 is vertically punctured to the skin 6 until one end of the injector needle puncturing adjustment tool 2 reaches the epidermis. On this occasion, a position where one end of the injector needle puncturing adjustment tool 2 reaches the epidermis, is a target depth of the puncturing. Accordingly a medicine or the like can be injected through the hub 4 without puncturing the injector needle 3 to the depth more than needed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a puncture adjusting device for a syringe needle which prevents puncture deeper than a target depth, and a syringe needle assembly provided with the same.

[0002]

2. Description of the Related Art Most vaccinations to administer vaccines and the like are performed by subcutaneous injection, but children move without standing.
In addition, since the skin is soft, it is difficult to stop at the target depth when puncturing a normal length injection needle used for adults, and it may puncture deeper than the target depth and cause muscle injection, causing pain. is there. In addition, when administering a drug to small animals and fish used for research and experiments, using a normal injection needle is too long, and small animals and fish are small and move around, so they may pierce deeply and damage organs etc. There is.

[0003] To solve these problems,
An injection needle assembly in which the injection needle is simply shortened and fixed to the hub is conceivable. However, a normal injection needle has a length of only about 2 mm in a portion having a blade surface at the tip, and therefore, a portion not fixed to the hub of the injection needle. When an injection needle assembly having a length of several millimeters is manufactured, the adhesive that has protruded from the bonding surface between the injection needle and the hub may reach the tip of the injection needle and may enter the injection needle from the opening. In addition, if an injection needle having a tip with a blade surface is short, the injection needle will not be sharp, resulting in a painful or non-punctureable injection needle.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the present invention is intended to ensure that the injection needle does not pierce the skin subcutaneously at the time of vaccination of a child and does not pierce it further deeply. Injection needle puncture adjuster that can be used without piercing deeper than necessary even when piercing small animals or fish to be used, and also in other punctures without piercing more than necessary, and an injection needle assembly including the same Is to provide.

[0005]

The above object is achieved by the present invention described below. (1) The present invention provides an injection needle that is provided on either an injection needle hub or an injection needle and that can be brought into contact with the epidermis to adjust the puncture depth of the injection needle to a target depth. Puncture adjustment tool. (2) The present invention is characterized in that the present invention is characterized in that the present invention is a cylindrical body, which extends coaxially with the injection needle, has the injection needle therein, and has one end fixed to the injection needle hub. It is a puncture adjusting device for an injection needle according to 1).

(3) The puncture adjusting device for a cylindrical injection needle according to the above (2), wherein the needle tip of the injection needle projects from the other end of the puncture adjusting device for the injection needle. This is a puncture adjusting device for a syringe needle to be used. (4) The injection puncture adjusting device for a cylindrical body according to the above (2), wherein the tip of the hypodermic injection needle does not project from the other end of the puncture adjusting device for an injection needle. It is a puncture adjustment tool for a needle.

(5) For an injection needle which is provided on either the injection needle hub or the injection needle, and which can be brought into contact with the epidermis to adjust the puncture depth of the injection needle to a target depth. It is an injection needle assembly provided with a puncture adjusting device. (6) The above-mentioned cylindrical body, which has a hypodermic needle adjuster extending coaxially with the hypodermic injection needle, having the hypodermic needle inside, and having one end fixed to the needle hub. An injection needle assembly comprising the injection needle puncture adjusting device according to (5).

(7) An injection needle assembly provided with the injection needle puncture adjusting device according to (6), wherein the tip of the injection needle projects from the other end of the injection needle puncture adjusting device. A syringe needle assembly provided with a syringe needle puncture adjusting device. (8) An injection needle assembly provided with the injection needle puncture adjustment device according to (6), wherein the needle tip of the skin shooting needle does not protrude from the other end of the injection needle puncture adjustment device. It is an injection needle assembly provided with a characteristic injection needle puncture adjusting device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. [1] FIG. 1 is a partial cross-sectional view showing an injection needle assembly 1 and an injection needle puncture adjusting device 2 according to an embodiment of the present invention. The injection needle assembly 1 is composed of a needle puncture adjuster 2, an injection needle 3, and a hub 4. In the present embodiment, the shape of the injection needle puncture adjuster 2 is a cylindrical shape as shown in FIG. 2 which is an external view, but is not particularly limited, and the cross-sectional shape is a triangular, quadrangular, or other polygonal cylindrical body. Alternatively, the cross-sectional shape may partially change, and a part thereof may have any shape. Further, the shape may be such that the diameter decreases toward one end. Further, it may be a stretchable structure such as a bellows-like structure or a stretchable multi-tube structure.

In the injection needle assembly 1, the length of the injection needle puncture adjustment tool 2 is such that the tip of the injection needle 3 can protrude from the injection needle puncture adjustment tool 2 while being fixed at the connection portion 5. . The injection needle puncture adjuster 2 is a bellows-like structure as described above,
In the case of a telescopic multi-tube structure, etc.
May be adjusted to a length that allows the distal end to protrude from the injection needle puncture adjusting device 2 before use. Note that the specific length of the injection needle puncture adjusting device 2 can be selected in consideration of the puncture depth depending on the purpose of use. However, when the puncture depth is set to be relatively shallow, another length will be described later. Needle assembly 1 of the embodiment
It is desirable to use the puncture adjustment tool 1 and the needle puncture adjustment tool 12. When joining with a hub, a tapered portion 2 is provided at one end.
1 is desirably provided.

The material for the needle puncture adjuster 2 is not particularly limited, but is preferably a plastic resin having transparency enough to allow the needle to be confirmed. For example, polyolefin such as polyethylene and polypropylene, polystyrene, polycarbonate, polymethylpentene , Methacrylic resin,
Vinyl chloride resins, polyester resins such as polyethylene terephthalate, and the like, and mixtures thereof can be used. Desirable is one that can withstand various types of sterilization such as high-pressure steam sterilization, EOG sterilization, and gamma-ray sterilization.

The injection needle 3 and the hub 4 may be commercially available, and are not particularly limited as long as they can be connected to an injection device such as a syringe. Needle puncture adjuster 2 and hub 4
Can be inserted and fixed at the connection part 5 before use as a separate body, and the injection needle puncture adjustment tool 2 and the hub 4 can be bonded and fused at the connection part 5 in advance. May be fixed.

Next, how to use the injection needle assembly 1 and the injection needle puncture adjusting device 2 will be described. As shown in the partial cross-sectional view of FIG. 3, the injection needle 3 is punctured substantially perpendicularly to the skin, and pierced until one end of the injection needle puncture adjuster 2 reaches the epidermis. The position where one end of the injection needle puncture adjusting device 2 reaches the epidermis is the target puncture depth. The puncturing depth is 0.1 to 5 mm, depending on the case. afterwards,
Injection device such as syringe connected to hub 4 (not shown)
To inject drugs and the like.

[2] FIG. 4 is a partial cross-sectional view showing an injection needle assembly 11 and an injection needle puncture adjusting device 12 according to an embodiment of the present invention. The injection needle assembly 11 is composed of an injection needle puncture adjuster 12, an injection needle 13, and a hub 14. In the present embodiment, the shape of the injection needle puncture adjustment device 12 is the same as the shape of the injection needle puncture adjustment device 2 of the above-described embodiment.

In the injection needle assembly 11, the length of the injection needle puncture adjustment device 12 is such that the tip of the injection needle 13 does not protrude from the injection needle puncture adjustment device 2 while being fixed at the connection portion 15. . When the needle puncture adjusting device 12 is a bellows-like structure or a multi-tube structure such as a fishing rod, the tip of the injection needle 13 is adjusted to a length that does not protrude from the needle puncture adjusting device 12 before use. And use it. The specific length of the injection needle puncture adjusting device 12 can be selected in consideration of the puncture depth depending on the purpose of use. However, when the puncture depth is set to be relatively deep, the above-described operation is performed. It is desirable to use the injection needle assembly 1 and the injection needle puncture adjuster 2 of the form (1).

The material of the puncture adjusting device 12 for the injection needle, the injection needle 1
3 and the hub 14 may be the same as the material of the injection needle puncture adjuster 2 of the above-described embodiment, the injection needle 3 and the hub 4, and the method of fixing the connection portion 15 is the same as that of the connection portion 5 of the above-described embodiment. The same may be applied.

Next, how to use the injection needle assembly 11 and the injection needle puncture adjusting device 12 will be described. As shown in the partial cross-sectional view of FIG. 5, when the injection needle puncture adjustment device 12 is strongly applied substantially perpendicularly to the skin, the injection needle puncture adjustment device 12
The part of the epidermis that is not in contact with the bulge bulges in a mountain-like manner and pierces the injection needle 13. The height position of the bulging epidermis is the target puncture depth. The puncturing depth is 0.05 to 3 mm, depending on the case. Thereafter, a drug or the like is injected by an injection device (not shown) such as a syringe connected to the hub 14.

[3] FIG. 6 shows an injection needle assembly 21 and an injection needle puncture adjustment tool 22a according to an embodiment of the present invention.
FIG. The injection needle assembly 21 includes a needle puncture adjustment tool 22 a, an injection needle 23, and a hub 24. In the present embodiment, injection needle puncture adjusting tool 22a
7 is a disk shape as shown in FIG. 7 which is an external view, but is not particularly limited, and may be a triangular, quadrangular, or other polygonal plate, or from the hub 24 to a predetermined position. It may be a cylinder having an extending length. Moreover,
It may be a clip-shaped one as shown in FIG. 8 (puncture adjuster for injection needle 22b) or a laundry pinched one.

The injection needle puncture adjusting tool 22a includes an injection needle 23.
Hole 25a is provided for the passage of the air. The diameter of the hole 25 may be the same as the diameter of the injection needle 23, or may be a small diameter when the injection needle puncture adjusting tool 22a is made of a flexible material. The position of the injection needle puncture adjuster 22a may be provided at a position where the tip of the injection needle 23 protrudes in consideration of the puncture depth depending on the purpose of use.

The injection needle puncture adjustment tool 22b includes an injection needle 23.
And a hole 25c through which the injection needle 23 is fitted. The diameter of the hole 25c may be the same as the diameter of the injection needle 23, or may be smaller if the injection needle puncture adjusting device 22b is made of a flexible material.
The groove 25b only needs to be opened in a range where the injection needle 23 can pass when the injection needle 23 is fitted into the hole 25c. The position of the injection needle puncture adjuster 22b may be provided at a position where the tip of the injection needle 23 projects, taking into consideration the puncture depth depending on the purpose of use.

The material of the injection needle puncture adjusting devices 22a and 22b does not need to be particularly limited, and a hard material or a soft material can be appropriately selected and used. Examples of the hard resin include metal and hard plastic resin, and examples of the hard plastic resin include polyolefin such as polyethylene and polypropylene, polystyrene, polycarbonate, polymethylpentene, methacrylic resin, vinyl chloride resin, and polyethylene terephthalate. And the like, and mixtures thereof. Also,
As a soft material, for example, natural rubber, butyl rubber,
Various rubber materials (especially vulcanized) such as isoprene rubber, butadiene rubber, styrene-butadiene rubber, and silicone rubber, and various elastomers such as polyurethane, polyester, polyamide, olefin, and styrene, or Those that can be used as a gasket for a syringe, such as a mixture thereof, are given. In any case, those capable of withstanding various sterilizations such as high-pressure steam sterilization, EOG sterilization, and gamma ray sterilization are desirable.

The injection needle 23 and the hub 24 may be commercially available, and are not particularly limited as long as they can be connected to an injection device such as a syringe. Needle puncture adjuster 22a
The injection needle 23 may be inserted through the hole 25a before using the injection needle puncture adjustment tool 22a as a separate body, and the injection needle puncture adjustment tool 22a and the injection needle 23 are fixed in advance by adhesion and fusion. If the injection needle puncture adjusting device 22a is made of metal, it may be formed integrally with the injection needle 23. Needle puncture adjusting device 22b and injection needle 2
3, before using the injection needle puncture adjustment tool 22b as a separate body,
The injection needle 23 may be fitted into the hole 25c via the groove 25b, and the injection needle 23 is previously fitted into the injection needle puncture adjustment tool 22b by the above-described method, and then fixed by adhesion and fusion. Is also good. When the injection needle puncture adjusting devices 22a and 22b are used separately, it is desirable that the contact surface with the injection needle 23 be made of the above-mentioned soft material in order to prevent the displacement.

Next, how to use the injection needle assembly 21 and the injection needle puncture adjusting tools 22a and 22b will be described. The injection needle 23 is punctured substantially perpendicularly to the skin, and pierced until one end of the injection needle puncture adjusters 22a and 22b reaches the epidermis. The position where one end of the injection needle puncture adjustment tool 22 reaches the epidermis is the target puncture depth. Thereafter, an injection device such as a syringe connected to the hub 24 (not shown).
To inject drugs and the like.

[0024]

As described above, the injection needle puncture adjusting device of the present invention and the injection needle assembly having the same can puncture the injection needle to a target depth. In particular, when the injection needle puncture adjusting device of the present invention and the injection needle assembly including the same are used at the time of vaccination for injecting a vaccine or the like into a child subcutaneously, the needle is surely punctured subcutaneously and does not pierce deeper. It is effective because preventive contact can be performed safely without giving any pain to muscles and the like. In addition, even if a small animal or fish used for research or experiment is punctured, it does not penetrate more deeply than necessary and does not damage organs and the like, so that accurate research results and experimental results can be obtained, which is effective.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing an injection needle assembly 1 and an injection needle puncture adjusting device 2 as an example of an embodiment of the present invention.

FIG. 2 is an external view of an injection needle puncture adjusting device 2.

FIG. 3 is a partial cross-sectional view showing a usage form of the injection needle assembly 1 and the injection needle puncture adjusting device 2.

FIG. 4 is a partial cross-sectional view showing an injection needle assembly 11 and a puncture adjusting device 12 for an injection needle according to an embodiment of the present invention.

FIG. 5 shows an injection needle assembly 11 and a puncture adjustment device 1 for an injection needle.
FIG. 4 is a partial cross-sectional view showing a usage pattern of No. 2.

FIG. 6 is an external view showing an injection needle assembly 21 and an injection needle puncture adjusting tool 22 as an example of an embodiment of the present invention.

FIG. 7 is an external view of an injection needle puncture adjusting device 22a.

FIG. 8 is an external view of an injection needle puncture adjusting device 22b.

[Explanation of symbols]

 1, 11, 21 ... injection needle assembly 2, 12, 22 ... injection needle puncture adjusting tool 21 ... taper portion 3, 13, 23 ... injection needle 4, 14, 24 ... Hub 5.15 Connection part 25a, 25c Hole 25b Groove

Claims (8)

[Claims] 1. A puncture for an injection needle which is provided on either an injection needle hub or an injection needle, and which can be brought into contact with the epidermis to adjust the puncture depth of the injection needle to a target depth. Adjustment tool. 2. The syringe according to claim 1, wherein the barrel extends coaxially with the injection needle, has the injection needle therein, and has one end fixed to the needle hub. The puncture adjusting device for an injection needle according to the above. 3. The injection puncture adjusting device for a cylindrical body according to claim 2, wherein the needle tip of the injection needle protrudes from the other end of the injection needle puncture adjusting device. Needle puncture adjuster. 4. The puncture adjusting device for a cylindrical injection needle according to claim 2, wherein the tip of the hypodermic injection needle does not protrude from the other end of the puncture adjusting device for a syringe needle. Puncture adjuster for injection needle. 5. A puncture for an injection needle which is provided on either the injection needle hub or the injection needle, and which can be adjusted to a target depth by piercing the injection needle by contacting the epidermis. Injection needle assembly with adjustment tool. 6. A needle puncture adjuster, which is a cylindrical body, extends coaxially with the hypodermic needle, has the hypodermic needle therein, and has one end fixed to the needle hub. An injection needle assembly comprising the injection needle puncture adjusting device according to claim 5. 7. An injection needle assembly comprising the injection needle puncture adjusting device according to claim 6, wherein the needle tip of the injection needle projects from the other end of the injection needle puncture adjusting device. An injection needle assembly comprising the injection needle puncture adjusting device. 8. An injection needle assembly comprising the injection needle puncture adjusting device according to claim 6, wherein the needle tip of the skin shooting needle does not project from the other end of the injection needle puncture adjusting device. An injection needle assembly provided with a puncture adjustment device for injection needles.