JPH09108351A - Needle with quartz thin film on its tip surface and its production method - Google Patents
Needle with quartz thin film on its tip surface and its production methodInfo
- Publication number
- JPH09108351A JPH09108351A JP7297824A JP29782495A JPH09108351A JP H09108351 A JPH09108351 A JP H09108351A JP 7297824 A JP7297824 A JP 7297824A JP 29782495 A JP29782495 A JP 29782495A JP H09108351 A JPH09108351 A JP H09108351A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- tip
- thin film
- organic solvent
- polyperhydrosilazane
- 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
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、先端が平滑で、扱
い易い注射針とその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection needle which has a smooth tip and is easy to handle, and a manufacturing method thereof.
【０００２】[0002]
【従来の技術】従来、注射針は使用時に伴う痛みを少な
くするため、針の先端部にシリコン樹脂をコーティング
する方法がとられてきたが、シリコン樹脂は人体への影
響に問題があるとして、最近、より中性で安定なフッ素
系樹脂やポリオレフィン系樹脂等のコーティングが試み
られている。しかし、これらの樹脂はいずれも、針母材
表面との接着に問題があり、その密着性を高めるため
に、針を化学的に前処理する必要があり、この前処理が
人体に悪影響を及ぼす危険性がある。2. Description of the Related Art Conventionally, injection needles have been coated with a silicone resin at the tip of the needle in order to reduce the pain associated with the use of the needle. However, the silicone resin has a problem of affecting the human body. Recently, attempts have been made to coat more neutral and stable fluororesins and polyolefin resins. However, all of these resins have a problem in adhesion to the surface of the needle base material, and it is necessary to chemically pretreat the needle in order to enhance the adhesion, and this pretreatment adversely affects the human body. There is a risk.
【０００３】[0003]
【発明が解決しようとする課題】そこで、本発明では、
注射針に、化学的な前処理をすることなく、安定して表
面を平滑に仕上げ、耐蝕性よく、人体に害のないコーテ
ィング処理を施し、扱い易い注射針を提供することを課
題とする。Therefore, in the present invention,
An object of the present invention is to provide an injection needle which is easy to handle by subjecting the injection needle to a stable and smooth surface finish without chemical pretreatment, and a coating treatment with good corrosion resistance and harm to the human body.
【０００４】[0004]
【課題を解決するための手段】本発明では、表面研磨し
た針先表面に非晶性石英の薄膜をコーティングすること
により、針先表面の粗度を平滑化すると共に、化学的に
中性で安定な石英薄膜による被覆によって、耐蝕性の高
い、安全な注射針を提供するものである。According to the present invention, the surface of the needle tip is coated with a thin film of amorphous quartz to smooth the roughness of the needle tip surface and to make it chemically neutral. The stable quartz thin film coating provides a safe needle with high corrosion resistance.
【０００５】本発明の製品は、先端部を研磨仕上げした
注射針を有機溶媒で脱脂洗浄後、極性有機溶媒に溶解し
たポリパーヒドロシラザンを塗布し、脱溶媒した後、１
３０〜１５０℃に加熱することにより製造することがで
きる。In the product of the present invention, an injection needle having a polished tip is degreased and washed with an organic solvent, polyperhydrosilazane dissolved in a polar organic solvent is applied, and the solvent is removed.
It can be produced by heating to 30 to 150 ° C.
【０００６】ここで使用する有機溶媒としては、極性炭
化水素化合物、例えばトルオール、キシレン、シクロヘ
キサン、シクロヘキセン等を挙げることができ、また、
ポリパーヒドロシラザンは分子量６００〜１２００のも
のが適している。この種のポリパーヒドロシラザンで
は、１３０〜１８０℃の加熱により体積変化することな
く、純度９9.９％以上の非晶性石英膜を得ることができ
る。Examples of the organic solvent used here include polar hydrocarbon compounds such as toluene, xylene, cyclohexane, cyclohexene, and the like.
Polyperhydrosilazane having a molecular weight of 600 to 1200 is suitable. With this type of polyperhydrosilazane, it is possible to obtain an amorphous quartz film having a purity of 99.9% or more without changing the volume by heating at 130 to 180 ° C.
【０００７】ポリパーヒドロシラザンは、上述の如き有
機溶媒に１〜１０重量％の濃度で溶解し、浸漬又は噴霧
法により、注射針にコーティングして、0.５〜３μｍの
密着性のよい平滑な石英膜を得ることができる。Polyperhydrosilazane is dissolved in the above-mentioned organic solvent at a concentration of 1 to 10% by weight, and is coated on an injection needle by a dipping or spraying method to give a smooth and smooth surface of 0.5 to 3 μm. An excellent quartz film can be obtained.
【０００８】このようにして得られた注射針の先端より
0.３mmの表面粗度を測定した結果、純度９9.９％以上の
石英膜が厚さ0.５〜３μｍでコーティングされた場合、
該膜がコーティングされる前に比べて、約１／３以下と
なり、表面平滑度が著しく向上していることがわかる。From the tip of the injection needle thus obtained
As a result of measuring the surface roughness of 0.3 mm, when a quartz film having a purity of 99.9% or more is coated with a thickness of 0.5 to 3 μm,
It can be seen that the surface smoothness is remarkably improved, which is about 1/3 or less of that before the film is coated.
【０００９】次に、本発明に従ってコーティングした表
面の耐擦傷試験の結果は1.５〜２％で、コーティング前
の注射針母材のヘイズ値８〜１０％に比べ、耐擦傷性が
著しく改良されていることが認められた。Next, the result of the scratch resistance test of the surface coated according to the present invention is 1.5 to 2%, which is significantly improved in scratch resistance as compared with the haze value of 8 to 10% of the injection needle base material before coating. It was recognized that it was done.
【００１０】[0010]
【発明の実施の形態】以下に実施例を掲げて本発明を更
に詳しく説明する。 実施例１ 鋼素材ＮＴ７５５ＨＳチューブを焼き入れ後、成型表面
仕上げした注射針をシクロヘキセンで脱脂洗浄し、次に
分子量９００のポリパーヒドロシラザン（東燃ポリシラ
ザンＰＨＰＳ−１）の３％シクロヘキサン溶液を用い、
針の先端３mmの部分に塗布した後、８０℃で加熱脱溶媒
し、更に１５０℃の除湿乾燥炉で１０分加熱した。得ら
れた注射針の先端部は、平均0.８μｍ厚の非晶性石英膜
を有し、先端より0.３mm部分の針表面の平滑性を表面粗
さ測定器（小坂研究所製サーフコーダＳＥ−３０１１）
で測定した結果、コーティング前素材の表面粗度0.７〜
0.８μｍに比べ、石英膜コーティングした表面粗度は0.
１６〜0.２６μｍと非常に平滑性に富んだものとなっ
た。次に、このようにして得た注射針先端部の折り曲げ
試験（ＪＩＳ−ＫＳ４００）では２〜３mmφで充分な密
着強度を示した。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the following examples. Example 1 After quenching a steel material NT755HS tube, a molded surface-finished injection needle was degreased and washed with cyclohexene, and then a 3% cyclohexane solution of polyperhydrosilazane having a molecular weight of 900 (Tonen polysilazane PHPS-1) was used.
After coating on the tip 3 mm of the needle, the solvent was removed by heating at 80 ° C. and further heated in a dehumidifying and drying oven at 150 ° C. for 10 minutes. The tip of the obtained injection needle had an amorphous quartz film with an average thickness of 0.8 μm, and the smoothness of the needle surface at 0.3 mm from the tip was measured by a surface roughness measuring device (Surfcoder made by Kosaka Laboratory). SE-3011)
The surface roughness of the material before coating is 0.7-
Compared with 0.8 μm, the surface roughness of quartz film coating is 0.
It became very smooth with 16 to 0.26 μm. Next, in the bending test (JIS-KS400) of the tip of the injection needle thus obtained, a sufficient adhesion strength was shown at 2-3 mmφ.
【００１１】実施例２ 先端径1.４５mmの四フッ化エタンチューブを切断成型し
た樹脂針をキシレンで脱脂洗浄後、分子量１２００のポ
リパーヒドロシラザン（東燃ポリシラザンＰＨＰＳ−
３）の0.５％キシレン溶液をスプレー塗布し、１００℃
で１５分脱溶媒し、更に１５０℃で３０分加熱し、３μ
ｍの非晶性石英膜を樹脂針表面に形成した。得られた石
英膜は、分光分析の結果９9.９４％の純度が得られ、樹
脂針表面の平滑性を前記サーフコーダＳＥ−３０１１で
測定した結果、0.２〜0.３μｍの平滑性を示した。ま
た、耐擦傷試験（荷重２５０ｇ、６０ｒｐｍスチールウ
ール＃０００番）の結果、コーティング前の素材のヘイ
ズ値７〜９％に比べ、コーティングした針はヘイズ値２
〜３％で、耐擦傷性が著しく向上していた。Example 2 A resin needle obtained by cutting and molding a tetrafluoroethane tube having a tip diameter of 1.45 mm was degreased and washed with xylene, and then polyperhydrosilazane having a molecular weight of 1200 (Tonen Polysilazane PHPS-
Spray-apply 0.5% xylene solution from 3), 100 ℃
Desolventize for 15 minutes, heat at 150 ° C for 30 minutes, and
An amorphous quartz film of m was formed on the surface of the resin needle. The obtained quartz film had a purity of 99.94% as a result of the spectroscopic analysis, and the smoothness of the resin needle surface was measured by the surf coder SE-3011. As a result, the smoothness of 0.2 to 0.3 μm was obtained. Indicated. In addition, as a result of a scratch resistance test (load 250 g, 60 rpm steel wool # 000), the coated needle has a haze value of 2 to 9% compared to the haze value of 7 to 9% of the material before coating.
At ~ 3%, the scratch resistance was remarkably improved.
【００１２】[0012]
【発明の効果】本発明の注射針は、針先表面が、化学的
に中性で安定かつ平滑な石英薄膜で被覆されているた
め、人体に悪影響を及ぼすことなく、耐擦傷性が著しく
改良されており、また、耐蝕性にも富み、非常に扱い易
いものである。EFFECTS OF THE INVENTION Since the needle tip surface of the present invention is covered with a chemically neutral, stable and smooth quartz thin film, the scratch resistance is remarkably improved without adversely affecting the human body. In addition, it has excellent corrosion resistance and is extremely easy to handle.
Claims (3)
膜をコーティングしてなることを特徴とする注射針。1. An injection needle, characterized in that a surface-polished needle tip surface is coated with a thin film of amorphous quartz.
媒で脱脂洗浄後、極性有機溶媒に溶解したポリパーヒド
ロシラザンを塗布し、脱溶媒した後、１３０〜１５０℃
に加熱することを特徴とする針先表面に非晶性石英膜を
有する注射針の製造方法。2. An injection needle whose tip is polished and finished is degreased and washed with an organic solvent, and then polyperhydrosilazane dissolved in a polar organic solvent is applied and desolvated, and then at 130 to 150 ° C.
A method for producing an injection needle having an amorphous quartz film on the surface of the needle tip, which is characterized by heating to
ポリパーヒドロシラザンが分子量６００〜１２００であ
ることを特徴とする請求項２の方法。3. The organic solvent is a polar hydrocarbon compound,
The method of claim 2, wherein the polyperhydrosilazane has a molecular weight of 600-1200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7297824A JPH09108351A (en) | 1995-10-20 | 1995-10-20 | Needle with quartz thin film on its tip surface and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7297824A JPH09108351A (en) | 1995-10-20 | 1995-10-20 | Needle with quartz thin film on its tip surface and its production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09108351A true JPH09108351A (en) | 1997-04-28 |
Family
ID=17851640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7297824A Pending JPH09108351A (en) | 1995-10-20 | 1995-10-20 | Needle with quartz thin film on its tip surface and its production method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09108351A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011040219A1 (en) | 2009-09-30 | 2011-04-07 | テルモ株式会社 | Syringe needle assembly and medication injection device |
-
1995
- 1995-10-20 JP JP7297824A patent/JPH09108351A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011040219A1 (en) | 2009-09-30 | 2011-04-07 | テルモ株式会社 | Syringe needle assembly and medication injection device |
| US8961460B2 (en) | 2009-09-30 | 2015-02-24 | Terumo Kabushiki Kaisha | Syringe needle assembly and medication injection device |
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