JP2008110260A - Tool for adjusting syringe needle punctures and syringe needle assembly with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for adjusting a syringe needle punctures capable of adjusting puncturing the depth of the syringe needle to the target depth, and a syringe needle assembly with the same, particularly, designed to perform a puncture safely by causing no pain when injecting vaccine hypodermically to infants in the preventive inoculation and other occasions. <P>SOLUTION: The syringe needle assembly 1 has a syringe needle hub 4 and comprises a puncturing adjustment tool 2 for the syringe needle. The puncturing adjustment tool 2 for the syringe needle is a cylindrical body arranged to the syringe needle hub 4, extending coaxially with the syringe needle 3, having the syringe needle 3 in its inside, with one end fixed to the syringe needle hub 4, and the needle tip of the syringe needle 3 projected from the other end. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a puncture adjusting tool for an injection needle that prevents puncturing deeper than a target depth, and an injection needle assembly including the same.

  Most vaccinations to administer vaccines, etc., are performed by subcutaneous injection, but children move without sting and the skin is soft, so it is the target when puncturing a normal length needle used for adults It is difficult to stop at the depth, and there is a risk of puncturing deeper than the target depth, resulting in intramuscular injection and causing pain. In addition, if a normal injection needle is used to administer drugs to small animals or fish used in research or experiments, it is too long, and small animals and fish are small and move around, so they may pierce deeply and damage organs. There is.

  Therefore, in order 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 a portion having a blade surface at the tip of about 2 mm. Therefore, when making a syringe needle assembly with a length of several millimeters that is not fixed to the hub of the syringe needle, the adhesive protruding from the adhesive surface of the syringe needle and the hub reaches the tip of the syringe needle and is injected from the opening. There is a risk of entering the needle. In addition, if an injection needle having a short tip portion is prepared, the injection needle has a sharp tip, and the injection needle is painful or cannot be punctured.

  In view of the above-mentioned problems of the prior art, the present invention ensures that the injection needle punctures a small animal or fish used for research or experiments without failing to puncture under the skin and prevent further penetration. However, it is an object of the present invention to provide a puncture adjusting tool for an injection needle that can be used without being deeply pierced more than necessary and without piercing deeper than necessary during other punctures, and an injection needle assembly including the same.

The above problems are solved by the present invention described below.
(1) The present invention is an injection needle that is provided on either the injection needle hub or the injection needle, and can adjust the depth of puncture of the injection needle to a target depth by contacting the epidermis. It is a puncture adjustment tool for use.
(2) The present invention is a cylindrical body, extends in the same direction as the injection needle, has the injection needle therein, and has one end fixed to the injection needle hub. A puncture adjusting device for an injection needle according to 1).
(3) The injection needle puncture adjustment tool for a cylindrical body according to (2), wherein the needle tip of the injection needle projects from the other end of the injection needle puncture adjustment tool. It is a puncture adjustment tool for use.
(4) The injection needle puncture adjustment tool for a cylindrical body according to (2), wherein the needle tip of the hypodermic needle does not protrude from the other end of the needle puncture adjustment tool. This is a needle puncture adjustment tool.
(5) A puncture adjustment tool for an injection needle, which is provided on either the injection needle hub or the injection needle, and can adjust the depth of puncture of the injection needle to a target depth by contacting the epidermis Is a syringe needle assembly.
(6) A cylindrical body that includes a hypodermic needle puncture adjustment tool that extends coaxially with the hypodermic needle, has the hypodermic needle therein, and has one end fixed to the hypodermic hub. An injection needle assembly comprising the injection needle puncture adjusting tool according to (5).
(7) An injection needle assembly comprising the injection needle puncture adjustment device according to (6), wherein the needle tip of the injection needle protrudes from the other end of the injection needle puncture adjustment device. An injection needle assembly provided with a needle puncture adjusting tool.
(8) An injection needle assembly comprising the injection needle puncture adjustment tool according to (6), wherein the needle tip of the skin needle does not protrude from the other end of the injection needle puncture adjustment tool. It is an injection needle assembly provided with the puncture adjustment tool for injection needles characterized.

  With the injection needle puncture adjusting tool of the present invention and the injection needle assembly including the same, the injection needle can be punctured to a target depth. In particular, when the puncture adjusting device for an injection needle of the present invention and the injection needle assembly equipped with the same are used for vaccination subcutaneously injecting a vaccine or the like to a child, it is surely punctured subcutaneously and does not pierce deeper further. It is effective because it does not reach muscles and can be safely prevented without giving pain. In addition, it is effective because accurate research results and experimental results can be obtained because it does not pierce a small animal or fish used for research or experiment deeply than necessary and does not damage organs.

  Hereinafter, the present invention will be described 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 as an example of an embodiment of the present invention. The injection needle assembly 1 includes an injection needle puncture adjusting tool 2, an injection needle 3, and a hub 4. In the present embodiment, the shape of the puncture adjusting device 2 for an injection needle is a cylindrical shape as shown in FIG. 2 which is an external view, but is not particularly limited, and is a cylinder having a triangular, quadrilateral or other polygonal cross-sectional shape. The cross-sectional shape may partially change, and a part thereof may have any shape. Moreover, the shape etc. which a diameter becomes small toward one end may be sufficient. Further, it may be stretchable such as a bellows-like structure or a stretchable multi-tubular 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 by the connecting portion 5. When the injection needle puncture adjusting tool 2 is the above-described bellows-like structure, expandable / contractible multi-tubular structure, etc., the length of the injection needle 3 can be protruded from the injection needle puncture adjusting tool 2 before use. Adjust and use. The specific length of the puncture adjusting device 2 for the injection needle 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, it will be described later. It is desirable to use the injection needle assembly 11 and the injection needle puncture adjusting tool 12 of the embodiment. Moreover, when joining with a hub, it is desirable to provide the taper part 21 at one end.

  The material of the puncture adjusting device 2 for the injection needle is not particularly limited, but is preferably a plastic resin having transparency enough to confirm the injection needle. 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. Those that can withstand various types of sterilization such as high-pressure steam sterilization, EOG sterilization, and gamma ray sterilization are desirable.

  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. The injection needle puncture adjusting tool 2 and the hub 4 may be a puncture adjustment tool 2 for the injection needle 2 and the hub 4 in advance, even if the puncture adjustment tool 2 for the injection needle is separately fitted and fixed at the connection portion 5 before use. May be fixed by bonding and fusion at the connection portion 5.

  Next, a method of using the injection needle assembly 1 and the injection needle puncture adjusting tool 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 is inserted until one end of the puncture adjusting device 2 for the injection needle reaches the epidermis. The position at which one end of the injection needle puncture adjusting tool 2 reaches the epidermis is the target puncture depth. The depth of puncture varies depending on the case, but is 0.1 to 5 mm. Thereafter, a medicine or the like is injected by an injection device (not shown) such as a syringe connected to the hub 4.

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

  In the injection needle assembly 11, the length of the injection needle puncture adjustment tool 12 is such that the tip of the injection needle 13 does not protrude from the injection needle puncture adjustment tool 2 while being fixed by the connection portion 15. When the puncture adjustment tool 12 for the injection needle is a bellows-like structure, a multi-tube structure such as a fishing rod, etc., the length of the injection needle 13 is adjusted so that it does not protrude from the puncture adjustment tool 12 for the injection needle before use. And use it. The specific length of the injection needle puncture adjusting tool 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 implementation is required. It is desirable to use the injection needle assembly 1 and the injection needle puncture adjusting tool 2 of the form.

  The material of the injection needle puncture adjustment tool 12, the injection needle 13 and the hub 14 may be the same as the material of the injection needle puncture adjustment tool 2, the injection needle 3 and the hub 4 of the embodiment described above. The method may be the same as that of the connection unit 5 of the embodiment described above.

  Next, a method of using the injection needle assembly 11 and the injection needle puncture adjusting tool 12 will be described. As shown in the partial cross-sectional view of FIG. 5, when the injection needle puncture adjustment tool 12 is strongly applied substantially perpendicular to the skin, the portion of the epidermis that is not in contact with the injection needle puncture adjustment tool 12 expands in a mountain shape. Stings 13 The position of the height of the epidermis swelled in a mountain shape is the target puncture depth. The depth of puncture varies depending on the case, but is 0.05 to 3 mm. Thereafter, a medicine or the like is injected by an injection device (not shown) such as a syringe connected to the hub 14.

  [3] FIG. 6 is an external view showing an injection needle assembly 21 and an injection needle puncture adjusting tool 22a as an example of an embodiment of the present invention. The injection needle assembly 21 includes an injection needle puncture adjusting tool 22a, an injection needle 23, and a hub 24. In the present embodiment, the shape of the injection needle puncture adjusting device 22a is a disc shape as shown in FIG. 7 which is an external view, but is not particularly limited, and is a triangular, quadrangular or other polygonal plate. Alternatively, it may be a cylindrical body having a length extending from the hub 24 to a predetermined position. Furthermore, it may be a clip-like one (injection needle puncture adjusting tool 22b) as shown in FIG.

  The injection needle puncture adjusting tool 22a is provided with a hole 25a for allowing the injection needle 23 to pass therethrough. The diameter of the hole 25 may be the same as the diameter of the injection needle 23 or may be smaller when the injection needle puncture adjusting tool 22a is made of a flexible material. The position of the puncture adjusting tool 22a for the injection needle 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 adjusting tool 22b is provided with a groove 25b for passing the injection needle 23 and a hole 25c into 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 when the injection needle puncture adjusting tool 22b is made of a flexible material. The groove 25b may be any groove that can be opened as long as the injection needle 23 can pass when the injection needle 23 is fitted into the hole 25c. The position of the puncture adjusting tool 22b for the injection needle 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 material of the puncture adjusting tools 22a and 22b for the injection needle need not be particularly limited, and a hard or soft material can be appropriately used. Examples of hard materials include metals and hard plastic resins. Examples of hard plastic resins include polyolefins such as polyethylene and polypropylene, polystyrene, polycarbonate, polymethylpentene, methacrylic resin, vinyl chloride resin, and polyethylene terephthalate. Polyester resins, etc., and mixtures thereof can be used. Examples of soft materials include natural rubber, butyl rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, silicone rubber, various vulcanized materials (especially those vulcanized), polyurethane, and polyester. In addition, various elastomers such as polyamide, olefin, and styrene, or a mixture thereof can be used as a gasket for a syringe. 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. The injection needle puncture adjusting tool 22a and the injection needle 23 may be inserted into the hole 25a before use, separately from the injection needle puncture adjustment tool 22a, and the injection needle puncture adjustment tool 22a and the injection needle 23 may be preliminarily attached. It may be fixed by adhesion or fusion, and may be integrally formed with the injection needle 23 when the injection needle puncture adjusting tool 22a is a metal. The needle puncture adjustment tool 22b and the injection needle 23 may be inserted into the hole 25c via the groove 25b before use with the needle puncture adjustment tool 22b as a separate body, and the needle puncture adjustment for the needle is previously adjusted. The injection needle 23 may be fitted into the tool 22b by the method described above and then fixed by adhesion or fusion. In addition, when using the puncture adjusting tools 22a and 22b for injection needles as separate bodies, it is desirable for the contact surface with the injection needle 23 to be made of the soft material described above to prevent displacement.

  Next, a method of using 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 is inserted until one end of the puncture adjusting tools 22a and 22b for the injection needle reaches the epidermis. The position at which one end of the injection needle puncture adjusting tool 22 reaches the epidermis is the target puncture depth. Thereafter, a medicine or the like is injected by an injection device (not shown) such as a syringe connected to the hub 24.

It is a fragmentary sectional view which shows the injection needle assembly 1 which is an example of embodiment of this invention, and the puncture adjustment tool 2 for injection needles. It is an external view of the puncture adjustment tool 2 for injection needles. It is a fragmentary sectional view which shows the usage form of the injection needle assembly 1 and the puncture adjustment tool 2 for injection needles. It is a fragmentary sectional view which shows the injection needle assembly 11 which is an example of embodiment of this invention, and the puncture adjustment tool 12 for injection needles. It is a fragmentary sectional view which shows the usage condition of the injection needle assembly 11 and the puncture adjustment tool 12 for injection needles. It is an external view which shows the injection needle assembly 21 which is an example of embodiment of this invention, and the puncture adjustment tool 22 for injection needles. It is an external view of the puncture adjustment tool 22a for injection needles. It is an external view of the puncture adjustment tool 22b for injection needles.

Explanation of symbols

1, 11, 21... Injection needle assembly 2, 12, 22... Injection needle puncture adjusting tool 21... Taper portion 3, 13, 23. Hub 5.15 ... Connections 25a, 25c ... Hole 25b ... Groove

Claims (2)

In a needle assembly having a needle and a needle hub,
A cylindrical body provided in the injection needle hub, extending in the same direction as the injection needle, having the injection needle therein, one end fixed to the injection needle hub, and the injection needle from the other end A needle assembly comprising a needle puncture adjusting tool with a needle tip protruding therefrom. The injection needle assembly according to claim 1, wherein the injection needle is punctured perpendicularly to the skin, and the puncture depth when one end of the puncture adjusting tool for the injection needle reaches the epidermis is 0.1 to 5 mm.

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