JPH0639035A - Injection needle - Google Patents
Injection needleInfo
- Publication number
- JPH0639035A JPH0639035A JP4195410A JP19541092A JPH0639035A JP H0639035 A JPH0639035 A JP H0639035A JP 4195410 A JP4195410 A JP 4195410A JP 19541092 A JP19541092 A JP 19541092A JP H0639035 A JPH0639035 A JP H0639035A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- needle tube
- adhesive
- tube
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 15
- 239000007924 injection Substances 0.000 title claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 25
- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 238000003780 insertion Methods 0.000 claims abstract description 18
- 230000037431 insertion Effects 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 16
- 238000003848 UV Light-Curing Methods 0.000 abstract 1
- 239000003822 epoxy resin Substances 0.000 description 10
- 229920000647 polyepoxide Polymers 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000001723 curing Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910001868 water Inorganic materials 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 238000007922 dissolution test Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000013035 low temperature curing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は注射針に関する。FIELD OF THE INVENTION The present invention relates to an injection needle.
【０００２】[0002]
【従来の技術】一般的な注射針の構造は図２に示すよう
なものであり、構成上針管１（カヌラ）と針もと２（ハ
ブ）とに分けることが出来る。2. Description of the Related Art A general injection needle has a structure as shown in FIG. 2, and can be divided into a needle tube 1 (canula) and a needle base 2 (hub) because of its structure.
【０００３】針管１はステンレス製のチューブで出来て
おり、先端の刃先１ａは斜めに研磨されている。The needle tube 1 is made of a stainless steel tube, and the cutting edge 1a at the tip is polished obliquely.
【０００４】針もと２は以前はポリ塩化ビニルも用いら
れたが、ポリ塩化ビニルには塩素を含んでいるため、最
近ではポリプロピレン、ポリアセタール等の成形品が主
に使用されている。Polyvinyl chloride was previously used for the needle base 2, but since polyvinyl chloride contains chlorine, molded articles such as polypropylene and polyacetal have been mainly used recently.
【０００５】この針もと２に針管１を挿入し、接着剤３
で接合して製造しているが、針もと２の接着性が悪い場
合は接着加工前に針もと２を表面加工してから使用して
いた。この表面加工には一般にオゾンによる表面処理が
行われている。The needle tube 1 is inserted into the needle base 2 and the adhesive 3
However, when the needle base 2 has poor adhesiveness, it was used after the needle base 2 was surface-treated before the bonding process. For this surface treatment, surface treatment with ozone is generally performed.
【０００６】上述の接合に使用する接着剤３としてエポ
キシ樹脂が使用されていた。このエボキシ樹脂接着剤は
一般に高粘度であるため、注射針の製造の場合には接着
剤３の回り込みを良くするために針管挿入部分の隙間を
大きくとった成形品の針もと２に接着剤３を塗布した針
管１を回転させながら差し込んでいた。An epoxy resin has been used as the adhesive 3 used for the above-mentioned joining. Since this epoxy resin adhesive generally has a high viscosity, in the case of manufacturing an injection needle, the adhesive is applied to the needle base 2 of a molded product having a large clearance between the needle tube insertion portions in order to improve the wraparound of the adhesive 3. The needle tube 1 coated with 3 was inserted while rotating.
【０００７】しかも、エポキシ樹脂接着剤はプラスチッ
クとの接着力が低いので、引抜き方向の強度を増すた
め、針管挿入部４の断面は図３に示すように中間に液溜
４ａを設けて容易に引き抜けないようにしてある。Moreover, since the epoxy resin adhesive has a low adhesive strength with the plastic, the cross section of the needle tube insertion part 4 is easily provided by providing a liquid reservoir 4a in the middle as shown in FIG. 3 in order to increase the strength in the pulling direction. I try not to pull it out.
【０００８】[0008]
【発明が解決しようとする課題】上述のエポキシ樹脂接
着剤は１液型エポキシ樹脂接着剤と２液型エポキシ樹脂
接着剤の何れかが使用されていた。As the above-mentioned epoxy resin adhesive, either one-pack type epoxy resin adhesive or two-pack type epoxy resin adhesive has been used.
【０００９】１液型エポキシ樹脂接着剤を使用する場合
は、硬化プロセスに加熱が必要であり、例えば８０℃で
３０分程度の時間が必要である。このため、針もと２に
使用されているポリプロピレン等の熱可塑性樹脂の場合
では、硬化時間の短縮を図るために高温での加熱は困難
である。When a one-pack type epoxy resin adhesive is used, heating is required for the curing process, and for example, a time of about 30 minutes at 80 ° C. is required. Therefore, in the case of a thermoplastic resin such as polypropylene used for the needle base 2, it is difficult to heat at a high temperature in order to shorten the curing time.
【００１０】又、針もと２の変形を防止するための低温
硬化では保持時間が長く、製造ラインでの乾燥炉が長大
となってしまうという問題がある。Further, low temperature curing for preventing the deformation of the needle base 2 causes a problem that the holding time is long and the drying furnace in the manufacturing line becomes long.
【００１１】２液型エポキシ樹脂接着剤を使用する場合
は、室温で硬化するが、硬化時間が数時間乃至数日間と
長く、又本剤と硬化剤との混合比によって強度のばらつ
きが大きい。When a two-pack type epoxy resin adhesive is used, it cures at room temperature, but the curing time is long, from several hours to several days, and the strength varies greatly depending on the mixing ratio of this agent and the curing agent.
【００１２】更に、２液型エポキシ樹脂接着剤の場合は
混合直後から硬化が開始されるので、大量に本剤と硬化
剤を混合しておくことが出来ず、塗布装置は機械的に煩
雑なメンテナンスが必要であり、清掃、保守が大変であ
る。Furthermore, in the case of a two-pack type epoxy resin adhesive, since curing starts immediately after mixing, it is impossible to mix a large amount of this agent and the curing agent, and the coating device is mechanically complicated. Maintenance is required, and cleaning and maintenance are difficult.
【００１３】これらの問題を解決するために、接着剤と
して紫外線硬化性樹脂を使用すると、粘度が低く狭い隙
間でも浸入し、紫外線の照射により硬化して接合され、
かつプラスチックとの接着力が大きいが、紫外線で照射
されなければ硬化しないので、液溜等の樹脂の集合して
いる部分は硬化し難く、液状のまま残ってしまう。この
ままでは硬化していない樹脂が注射液等に溶け出して来
るという問題がある。In order to solve these problems, when an ultraviolet curable resin is used as an adhesive, it has a low viscosity and penetrates even in narrow gaps, and is cured by irradiation of ultraviolet rays to be bonded.
Moreover, although it has a strong adhesive force with the plastic, it does not cure unless it is irradiated with ultraviolet rays, so that the portion where the resin is gathered such as a liquid reservoir is hard to cure and remains in a liquid state. If it is left as it is, there is a problem that the uncured resin will be dissolved out in the injection solution or the like.
【００１４】本発明は上述の問題を解決して、接合作業
を簡単化出来る注射針を提供することを課題とする。An object of the present invention is to solve the above problems and provide an injection needle which can simplify the joining work.
【００１５】[0015]
【課題を解決するための手段】上述の課題を解決するた
めに、注射針の針管１を挿入して固定する針もと２の針
管挿入孔５は外部の開口部は３ｍｍ程度以下の深さの液
受部５ｂで、前記針管１が挿入される挿入部５ａの直径
と前記針管１の外径との差は０．５ｍｍ以下、望ましく
は０．３ｍｍ以下で、前記挿入部５ａと針管１の間の隙
間に注入される接着剤３は紫外線硬化性樹脂を使用する
ものである。In order to solve the above problems, the needle tube insertion hole 5 of the needle base 2 into which the needle tube 1 of the injection needle is inserted and fixed has an external opening of a depth of about 3 mm or less. In the liquid receiving portion 5b, the difference between the diameter of the insertion portion 5a into which the needle tube 1 is inserted and the outer diameter of the needle tube 1 is 0.5 mm or less, preferably 0.3 mm or less, and the insertion portion 5a and the needle tube 1 are The adhesive 3 injected into the gap between the two uses an ultraviolet curable resin.
【００１６】[0016]
【作用】上述のように、粘度の低い紫外線硬化性樹脂接
着剤を使用しているので、接着剤の回り込みが良く、僅
かな隙間でも浸入して行く上、プラスチックとの接着性
も良いので、液溜等の機械的な係合部分の必要がない。As described above, since the UV curable resin adhesive having a low viscosity is used, the adhesive can easily wrap around, penetrate into even a small gap, and have good adhesiveness with the plastic. There is no need for a mechanical engaging part such as a liquid reservoir.
【００１７】[0017]
【実施例】図１は本発明の注射針の針管１を接着する部
分の針もと２の部分断面図である。同図の（イ）は液受
部５ｂがテーパー状のもので、挿入部５ａの直径は挿入
される針管１が挿嵌できる程度で隙間は０．５ｍｍ以下
で、０．３ｍｍ以下が望ましい。1 is a partial sectional view of a needle base 2 of a portion of an injection needle of the present invention to which a needle tube 1 is attached. In (a) of the figure, the liquid receiving portion 5b has a tapered shape, and the diameter of the insertion portion 5a is such that the needle tube 1 to be inserted can be inserted and the gap is 0.5 mm or less, preferably 0.3 mm or less.
【００１８】針管挿入孔５の開口部は液受部５ｂとなっ
ており、この液受部５ｂの深さはここに溜まった紫外線
硬化性樹脂が紫外線の照射により硬化可能な３ｍｍ以下
が望ましい。The opening of the needle tube insertion hole 5 serves as a liquid receiving portion 5b, and the depth of the liquid receiving portion 5b is preferably 3 mm or less at which the ultraviolet curable resin accumulated therein can be cured by irradiation with ultraviolet rays.
【００１９】上述の構造の針もと２を使用して針管１を
接着固定する場合、従来方法と異なり、先ず針管１を針
もと２の針管挿入孔５の奥まで挿入し、その後液受部５
ｂから紫外線硬化性樹脂接着剤を必要最少限度の量だけ
滴下して針管挿入部５ａと針管１との隙間に浸入させ、
充分に浸入した後に紫外線を照射する。When the needle tube 1 having the above-mentioned structure is used to bond and fix the needle tube 1, unlike the conventional method, first, the needle tube 1 is inserted into the needle tube insertion hole 5 of the needle base 2, and then the liquid receiver is received. Part 5
The ultraviolet curable resin adhesive is dripped from b in the required minimum amount and penetrated into the gap between the needle tube insertion portion 5a and the needle tube 1,
Irradiate with ultraviolet rays after fully infiltrating.
【００２０】なお、この場合針もと２の針管挿入部５ａ
部分は紫外線に対して透明であることが好ましいが、実
際にはプチスチックは製造時に紫外線吸収剤が添加され
ることが多く、可視光線では透明であっても、紫外線に
対しては透明度が低い場合があるが、液受部５ｂの深さ
が紫外線による硬化限度以内であるので、完全に硬化固
定される。In this case, the needle tube insertion portion 5a of the needle base 2
It is preferable that the part is transparent to ultraviolet rays, but in practice, a plasticizer is often added with an ultraviolet absorber at the time of production, and even if it is transparent to visible light, it has low transparency to ultraviolet light. However, since the depth of the liquid receiving portion 5b is within the curing limit by ultraviolet rays, it is completely cured and fixed.
【００２１】次に、紫外線硬化性樹脂接着剤による針も
と２と針管１の接着状態についての試験結果について説
明する。本発明による改善点は低粘度の樹脂の垂れ込み
を防止し、紫外線硬化性樹脂の未硬化部分を無くし、な
おかつ強度は従来品以上であることを目的としているた
め、形状による強度の比較は従来使用されているエポキ
シ樹脂と比較した。Next, the test results of the bonding state of the needle base 2 and the needle tube 1 with the ultraviolet curable resin adhesive will be described. The improvement according to the present invention is intended to prevent sagging of low-viscosity resin, to eliminate the uncured portion of the UV curable resin, and to be stronger than conventional products. Compared with the epoxy resin used.
【００２２】外観は未硬化状態で室温で２４時間放置
後、針受部分から樹脂が垂れ込んでいないかどうか目視
により確認した。The appearance of the resin was left for 24 hours at room temperature in an uncured state, and then visually confirmed whether the resin dripped from the needle receiving portion.
【００２３】強度は紫外線照射装置により６０００ｍＪ
／ｃｍ2 の積算光量を与えた後に引張試験機により１０
ｍｍの速度で針もと２と針管１のそれぞれを固定して試
験を行った。The intensity is 6000 mJ by an ultraviolet irradiation device.
After giving an integrated light quantity of / cm 2 , 10
The test was conducted by fixing each of the needle base 2 and the needle tube 1 at a speed of mm.
【００２４】試験に使用したテストピースはポリプロピ
レン製の針もと２と針管１の２１Ｇの外径とほぼ同じ
０．８５ｍｍのステンレス管とした。The test piece used in the test was a 0.85 mm stainless steel tube having a needle base 2 made of polypropylene and a 21 G outer diameter of the needle tube 1.
【００２５】表中の３０４２Ｂ及び３０５１Ｃは何れも
スリーボンド社製造の紫外線硬化性樹脂であり、又材料
破壊とは引張力が１０ｋｇｆ以上で接着強度が充分で針
もと２側が破壊されたことを示す。In the table, both 3042B and 3051C are UV-curable resins manufactured by ThreeBond Co., Ltd., and the material destruction means that the tensile strength is 10 kgf or more and the adhesive strength is sufficient and the needle side 2 side is destroyed. .
【００２６】図３の従来形状の接合部を持つ試験片での
比較Comparison with the test piece having the conventional joint of FIG.
【表１】 [Table 1]
【００２７】図１（イ）の本発明の形状の接合部を持つ
試験片での比較Comparison with a test piece having a joint portion having the shape of the present invention shown in FIG.
【表２】 [Table 2]
【００２８】垂れ込み確認は、図１（イ）及び図３の形
状の試験片を用い、硬化させた後、４０℃ ２４時間後
に下部の孔よりの垂れ込みの有無を目視により確認。The sagging was confirmed by visually observing the presence or absence of sagging from the lower hole 24 hours after curing at 40 ° C. using a test piece having the shape shown in FIGS. 1 (a) and 3.
【表３】 [Table 3]
【００２９】溶出試験は、試験片ごと硬化物を７０℃の
水中に３０分浸漬、溶出した水のｐＨ、重金属、過マン
ガン酸カリウム還元物質、蒸発残留分についてディスポ
ーザブル注射針基準II−６に基づき検査を行った。ただ
し、エポキシは２液エポキシのみ。In the dissolution test, the cured product was immersed in water at 70 ° C. for 30 minutes together with the test piece, and the pH of the dissolved water, heavy metal, potassium permanganate reducing substance, and evaporation residue were measured according to disposable needle standard II-6. An inspection was done. However, epoxy is only a two-component epoxy.
【表４】 又、この溶出試験に使用した水について生物学的試験を
実施したが、何れも問題はなかった。[Table 4] A biological test was conducted on the water used in this dissolution test, but there was no problem in any of them.
【００３０】なお、液受部５ｂとして、図１（ロ）示の
テーパー付円筒状のもの、（ハ）示の円筒状のものがあ
るが、何れでも良い。As the liquid receiving portion 5b, there are a tapered cylindrical shape shown in FIG. 1B and a cylindrical cylindrical shape shown in FIG. 1C, but either may be used.
【００３１】[0031]
【発明の効果】上述の各試験結果から、注射針としての
機械的及び医学的な問題はなく、従来品と同様に使用す
ることが可能である。From the above test results, there is no mechanical or medical problem as an injection needle, and it can be used in the same manner as conventional products.
【００３２】製造工程上は紫外線硬化性樹脂接着剤の使
用による硬化時間の短縮で時間単位の製造量を大幅に増
大することが可能である。In the manufacturing process, the curing time can be shortened by using the UV-curable resin adhesive, so that the production amount per unit time can be greatly increased.
【図１】本発明の注射針の針管を接着する部分の針もと
の部分断面図で、（イ）は液受部がテーパー状のもの、
（ロ）は液受部がテーパー付円筒状のもの、（ハ）は円
筒状のものである。FIG. 1 is a partial cross-sectional view of a needle base of a portion of an injection needle of the present invention to which a needle tube is adhered, in which (a) a liquid receiving portion has a tapered shape,
(B) has a cylindrical liquid receiving portion, and (c) has a cylindrical shape.
【図２】注射針の一般的な外観図である。FIG. 2 is a general external view of an injection needle.
【図３】従来の注射針の針管を接着する部分の針もとの
部分断面図である。FIG. 3 is a partial cross-sectional view of a needle base of a conventional injection needle to which a needle tube is bonded.
１ 針管 ２ 針もと ３ 接着剤 ５ 針管挿入孔 ５ａ 挿入部 ５ｂ 液受部 1 Needle tube 2 Needle base 3 Adhesive 5 Needle tube insertion hole 5a Insertion part 5b Liquid receiving part
Claims (1)
の針管挿入孔は外部の開口部は３ｍｍ程度以下の深さの
液受部で、前記針管が挿入される挿入部の直径と前記針
管の外径との差は０．５ｍｍ以下、望ましくは０．３ｍ
ｍ以下で、前記挿入部と針管の間の隙間に注入される接
着剤は紫外線硬化性樹脂であることを特徴とする注射
針。1. A needle tube insertion hole at the base of a needle into which a needle tube of an injection needle is inserted and fixed is an external opening having a liquid receiving portion with a depth of about 3 mm or less, and a diameter of the insertion portion into which the needle tube is inserted. And the outer diameter of the needle tube is 0.5 mm or less, preferably 0.3 m
An injection needle characterized in that the adhesive, which is less than or equal to m and is injected into the gap between the insertion portion and the needle tube, is an ultraviolet curable resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195410A JPH0639035A (en) | 1992-07-22 | 1992-07-22 | Injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195410A JPH0639035A (en) | 1992-07-22 | 1992-07-22 | Injection needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0639035A true JPH0639035A (en) | 1994-02-15 |
Family
ID=16340639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4195410A Pending JPH0639035A (en) | 1992-07-22 | 1992-07-22 | Injection needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639035A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0871031A (en) * | 1994-09-02 | 1996-03-19 | Olympus Optical Co Ltd | Medical appliance |
| KR100723285B1 (en) * | 1999-02-08 | 2007-05-30 | 모토로라 리미티드 | Antenna array system |
| KR20180054159A (en) * | 2016-11-15 | 2018-05-24 | 주식회사 파이룩스 | Needle for skin stimulation combined |
-
1992
- 1992-07-22 JP JP4195410A patent/JPH0639035A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0871031A (en) * | 1994-09-02 | 1996-03-19 | Olympus Optical Co Ltd | Medical appliance |
| KR100723285B1 (en) * | 1999-02-08 | 2007-05-30 | 모토로라 리미티드 | Antenna array system |
| KR20180054159A (en) * | 2016-11-15 | 2018-05-24 | 주식회사 파이룩스 | Needle for skin stimulation combined |
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