JP2014133077A - Medical device having lubricant surface and manufacturing method thereof - Google Patents

Medical device having lubricant surface and manufacturing method thereof Download PDF

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JP2014133077A
JP2014133077A JP2013016148A JP2013016148A JP2014133077A JP 2014133077 A JP2014133077 A JP 2014133077A JP 2013016148 A JP2013016148 A JP 2013016148A JP 2013016148 A JP2013016148 A JP 2013016148A JP 2014133077 A JP2014133077 A JP 2014133077A
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maleic anhydride
lubricity
medical device
water
wire
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JP5904374B2 (en
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Akiko Yasuhara
亜貴子 安原
Koji Hirai
広治 平井
Teruo Hashimoto
輝夫 橋本
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Abstract

PROBLEM TO BE SOLVED: To provide a medical device with new functions, i.e. having excellent lubricity durability of a thin film coated on a metal substrate, sustainable for calcium ions and anticancer agents in blood; while various methods have been conventionally examined in manufacturing medical guide wires or the like so as to make the coating resin layer as thin as possible, having difficulties in securing the lubricity durability itself and problems of reduction in lubricity durability due to presence of calcium ions and anticancer agents in blood.SOLUTION: A maleic anhydride copolymer compound having a specific half ester bond is immobilized on the surface of substrate to constitute a medical device.

Description

発明の詳細な説明Detailed Description of the Invention

本発明は湿潤時における潤滑性、潤滑耐久性、保水性に優れ、かつ治療時における血液や抗癌剤の影響を受けることなく高度な潤滑性を有する医療用具を提供するものであり、ガイドワイヤー,カテーテルなどの医療用具の表面の機能化に有用な発明である。  The present invention provides a medical device that is excellent in lubricity when wet, lubrication durability, and water retention, and has high lubricity without being affected by blood or anticancer agents during treatment. It is an invention useful for functionalizing the surface of a medical device such as the above.

医療分野において、気管、消化管、尿管、血管、その他の体腔、又は、組織に挿入されるカテーテル、イントロデューサーおよびこれらに挿入されるガイドワイヤーなどの医療用具は、挿入時に目的部位にアクセスするための操作性を向上し、血管内壁や粘膜などへの組織損傷を最小限にするためには、潤滑性を有する表面が必要である。その目的のために、基材表面に親水性化合物をコートして、湿潤時における潤滑性を向上している。  In the medical field, a medical device such as a trachea, digestive tract, ureter, blood vessel, other body cavity, or a catheter inserted into a tissue, an introducer, and a guide wire inserted therein accesses a target site at the time of insertion. In order to improve operability and minimize tissue damage to the blood vessel inner wall and mucous membrane, a surface having lubricity is required. For that purpose, the surface of the substrate is coated with a hydrophilic compound to improve the lubricity when wet.

これまで,基材表面をイソシアネート化合物で処理した後,メチルビニルエーテル・無水マレイン酸共重合化合物あるいはそのハーフエチルエステルをコートすることで,湿潤時に表面が潤滑性を発現するようにした医療器具(文献1)などが知られている。しかしながら,メチルビニルエーテル・無水マレイン酸共重合化合物のハーフエチルエステルは,疎水性のエステル結合であることから,乾燥状態で保存された医療器具を水に濡らしても,すぐに潤滑性を発現しにくいこと,また,大気中に短時間放置するだけで,潤滑性を消失するなど,保水性の面において大きな欠点がある。一方,メチルビニルエーテル・無水マレイン酸共重合化合物のジカルボン酸ナトリウム塩は,前記ハーフエチルエステルに対して,潤滑性,保水性の面において有利であるものの,治療時に血液や抗癌剤の影響を受けて、表面潤滑性が大きく低下する欠点を有している。  Up to now, after treating the base material surface with an isocyanate compound, it is coated with methyl vinyl ether / maleic anhydride copolymer compound or its half ethyl ester so that the surface exhibits lubricity when wet (references) 1) etc. are known. However, half-ethyl ester of methyl vinyl ether / maleic anhydride copolymer compound is a hydrophobic ester bond, so that even when a medical device stored in a dry state is wetted with water, it is difficult to immediately exhibit lubricity. In addition, there are major drawbacks in terms of water retention, such as loss of lubricity just by leaving in the atmosphere for a short time. On the other hand, the sodium salt of dicarboxylic acid of methyl vinyl ether / maleic anhydride copolymer compound is advantageous in terms of lubricity and water retention compared to the half ethyl ester, but is affected by blood and anticancer agents during treatment. It has a drawback that the surface lubricity is greatly reduced.

特公平01−33181Japanese Patent Fair 01-33181

本発明の目的は、上記の問題点に鑑みてなされたもので,湿潤時の保水性が良好で,潤滑性、潤滑耐久性に優れ、かつ,多価金属イオン、抗癌剤などの影響を受けることなく、潤滑性能が高度に保持される医療用具を提供することを目的とする。  The object of the present invention has been made in view of the above problems, has good water retention when wet, excellent lubricity and durability, and is affected by polyvalent metal ions, anticancer agents, and the like. An object of the present invention is to provide a medical device that maintains a high level of lubrication performance.

本発明者は鋭意検討した結果、上記目的は、下記(1),(2),(3)により達成されることを見出し、本発明を完成するに至った。  As a result of extensive studies, the present inventor has found that the above object can be achieved by the following (1), (2), and (3), and has completed the present invention.

(1)湿潤時に表面が潤滑性を有する医療用具であって、該医療用具を構成する基材の表面に、無水マレンイン酸を一成分とする共重合化合物と一般式 RO−(CHCHO)n−OH(Rは炭素数1または2のアルキル基、nは1〜5の整数)で表されるアルコール含有化合物との反応によって、共重合無水マレイン酸の50〜100モル%がハーフエステル化された無水マレイン酸共重合化合物が固定化されていることを特徴とする医療用具
(2)一般式 RO−(CHCHO)n−OHで表わされるアルコール化合物において、Rのアルキル基の炭素数が1であり、nの数が3であることを特徴とする(1)に記載の医療用具
(3)基材の表面に、無水マレイン酸を一成分とする共重合体とRO−(CHCHO)n−OHの反応によって、共重合無水マレイン酸の50〜100モル%がハーフエステル化された無水マレイン酸共重合化合物を塗布、乾燥後、さらに、アルカリ処理することを特徴とする医療用具の製造方法
(1) A medical device having a lubricious surface when wet, and a copolymer compound containing maleic anhydride as a component and a general formula RO- (CH 2 CH 2 on the surface of a base material constituting the medical device O) 50 to 100 mol% of copolymerized maleic anhydride is half by reaction with an alcohol-containing compound represented by n-OH (R is an alkyl group having 1 or 2 carbon atoms, n is an integer of 1 to 5). in medical devices (2) general formula RO- (CH 2 CH 2 O) alcohol compound represented by n-OH, wherein the esterified maleic anhydride copolymer compound is immobilized, alkyl of R The medical device according to (1), wherein the number of carbons in the group is 1 and the number of n is 3, (3) a copolymer containing maleic anhydride as a component on the surface of the substrate; RO- (CH 2 CH 2 O) n By reaction of OH, 50 to 100 mole percent of copolymerized maleic anhydride applying the half-esterified maleic anhydride copolymer compound, drying, further method for producing a medical device, which comprises alkaline treatment

本発明の目的は、各種基材表面に無水マレンイン酸を一成分とする共重合化合物と一般式 RO−(CHCHO)n−OHで表されるアルコール系化合物との反応によって、共重合無水マレイン酸の50〜100モル%がハーフエステル化された無水マレイン酸共重合化合物をコーティングすることによって,優れた潤滑性、潤滑耐久性と保水性を付与するとともに、血液中あるいは抗癌剤の存在下においても高度な潤滑性、潤滑耐久性と保水性を有する医療器具を提供することにある。本発明に係る医療用具は湿潤時において、保水性が優れ,摩擦係数が低く,優れた潤滑性を有すると共に、実使用時における操作性に優れ、長期にわたり製品性能が変化することも無く,また,過酷な使用条件下においても潤滑性,潤滑耐久性、保水性を維持することが可能な医療用具が実現できる。The object of the present invention is to provide a copolymer by reacting a copolymer compound containing maleic anhydride as a component on the surface of various substrates with an alcohol compound represented by the general formula RO- (CH 2 CH 2 O) n-OH. By coating maleic anhydride copolymer compound in which 50 to 100 mol% of polymerized maleic anhydride is half-esterified, it gives excellent lubricity, lubrication durability and water retention, and also exists in blood or anticancer agent The object is to provide a medical device having high lubricity, lubrication durability and water retention. The medical device according to the present invention has excellent water retention, low friction coefficient, excellent lubricity when wet, excellent operability in actual use, and product performance does not change over a long period of time. , A medical device capable of maintaining lubricity, lubrication durability and water retention even under severe use conditions can be realized.

本発明は医療用具を構成する各種基材表面に、無水マレンイン酸を一成分とする共重合化合物と一般式 RO−(CHCHO)n−OH で表されるアルコール系化合物との反応によって、共重合無水マレイン酸の50〜100モル%がハーフエステル化された無水マレイン酸共重合化合物を基材表面に強固に固定化していることを特徴とする医療用具である。具体的には,無水マレイン酸とメチルビニルエーテルの交互共重合化合物などを,一般式 RO−(CHCHO)n−OHで表されるアルコール系化合物(Rは炭素数1または2のアルキル基、nの数は1〜4の整数)と反応させて得られたエステル結合を有する無水マレイン酸共重合化合物を基材表面にコートする方法などが採用しうる。Rのアルキル基の炭素数は1または2の時に、潤滑性、保水性、潤滑耐久性のすべてが良好であり、特に炭素数が1の場合に最も潤滑性、保水性、潤滑耐久性が優れる。また、Rが3より大きくなると疎水性が強くなり、潤滑性、保水性が劣る。nの数は1〜5の時に潤滑耐久性が優れ、また、変成された無水マレイン酸共重合化合物自体の粘着性が小さいことから、生産工程における工程通過性が良好である。一方、nの数が6以上と大きくなるに従って、製品表面の粘着性が増加し、工程通過性および製品品質に大きな問題を生じる。The present invention various substrate surfaces constituting the medical device, the reaction of the copolymerized compound to one component anhydride Maren'in acid of the general formula RO- (CH 2 CH 2 O) alcohol compound represented by the n-OH Thus, the maleic anhydride copolymer compound in which 50 to 100 mol% of the copolymerized maleic anhydride is half-esterified is firmly fixed on the surface of the base material. Specifically, an alternating copolymer compound of maleic anhydride and methyl vinyl ether is converted into an alcohol compound represented by the general formula RO— (CH 2 CH 2 O) n—OH (where R is an alkyl having 1 or 2 carbon atoms). A method of coating the surface of the base material with a maleic anhydride copolymer compound having an ester bond obtained by reacting with the group n is an integer of 1 to 4 may be employed. When the carbon number of the alkyl group of R is 1 or 2, the lubricity, water retention and lubrication durability are all good, and when the carbon number is 1, the lubricity, water retention and lubrication durability are most excellent. . Further, when R is larger than 3, the hydrophobicity becomes strong, and the lubricity and water retention are inferior. When the number of n is 1 to 5, the lubrication durability is excellent, and the modified maleic anhydride copolymer compound itself has low adhesiveness, so that the process passability in the production process is good. On the other hand, as the number of n increases to 6 or more, the tackiness of the product surface increases, resulting in significant problems in process passability and product quality.

一般式 RO−(CHCHO)n−OH で表されるアルコール系化合物としては,エチレングリコールモノメチルエーテル,ジエチレングリコールモノメチルエーテル,トリエチレングリコールモノメチルエーテル,テトラエチレングリコールモノメチルエーテル,エチレングリコールモノエチルエーテル,ジエチレングリコールモノエチルエーテル,トリエチレングリコールモノエチルエーテル,テトラエチレングリコールモノエチルエーテルが挙げられる。Examples of alcohol compounds represented by the general formula RO— (CH 2 CH 2 O) n—OH include ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, tetraethylene glycol monomethyl ether, and ethylene glycol monoethyl ether. , Diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, and tetraethylene glycol monoethyl ether.

本発明において、各種無水マレイン酸共重合化合物、特に、メチルビニルエーテル・無水マレイン酸共重合化合物が好ましく用いられるが、これらの化合物中の無水マレイン酸を、RO−(CHCHO)n−OH で表されるアルコール系化合物によって、50〜100モル%の範囲で反応させて用いることができる。特に好ましい範囲は、60〜90モル%であり、潤滑性、保水性、潤滑耐久性、耐多価金属イオン性、耐抗癌剤性の総合性能において優れる。50モル%未満では本発明の効果が小さくなり、十分な耐多価金属イオン性、耐抗癌剤性が得られない。In the present invention, various maleic anhydride copolymer compounds, particularly methyl vinyl ether / maleic anhydride copolymer compounds, are preferably used. The maleic anhydride in these compounds is represented by RO— (CH 2 CH 2 O) n—. Depending on the alcohol compound represented by OH 3, it can be used in a range of 50 to 100 mol%. A particularly preferable range is 60 to 90 mol%, which is excellent in overall performance of lubricity, water retention, lubrication durability, polyvalent metal ion resistance and anticancer drug resistance. If it is less than 50 mol%, the effect of the present invention will be small, and sufficient multivalent metal ion resistance and anticancer drug resistance will not be obtained.

本発明における無水マレイン酸共重合化合物と架橋剤を上記の配合組成で混合した溶液を作成し、この溶液に浸漬する方法、溶液を塗布する方法、溶液を噴霧する方法など、従来から一般に採用されている方法を用いることができる。  A method in which a maleic anhydride copolymer compound and a crosslinking agent in the present invention are mixed in the above-described composition is prepared, and a method of immersing in this solution, a method of applying a solution, a method of spraying a solution, etc. have been generally employed. Can be used.

上記のコーティング溶液に用いられる溶剤としては、アセトン、メチルエチルケトンなどのケトン系溶剤、メタノール、エタノール、イソプロパノールなどのアルコール系溶剤、テトラヒドロフランあるいはそれらの混合溶剤、など汎用的な有機溶剤が使用しうる。これらの溶剤に、0.3〜8重量%、好ましくは0.5〜5重量%の濃度に溶解してコーティング溶液を調製する。  As the solvent used in the coating solution, a general-purpose organic solvent such as a ketone solvent such as acetone or methyl ethyl ketone, an alcohol solvent such as methanol, ethanol or isopropanol, tetrahydrofuran or a mixed solvent thereof can be used. A coating solution is prepared by dissolving in these solvents at a concentration of 0.3 to 8% by weight, preferably 0.5 to 5% by weight.

上記のコーティング溶液に浸漬した後、乾燥し、引き続き、60〜130℃の温度で10〜300分の加熱処理を行う。  After being immersed in the above coating solution, it is dried and subsequently subjected to a heat treatment at a temperature of 60 to 130 ° C. for 10 to 300 minutes.

さらに、アルカリ溶液に浸漬し、エステル結合を有する無水マレイン酸共重合化合物のカルボキシル基をアルカリ塩にすることで、潤滑性、潤滑耐久性および保水性の優れた医療用具の製造が可能となる。このアルカリ処理に用いられるアルカリとしては、上記カルボキシル基をアルカリ塩へ変換する目的を達成できるアルカリであれば使用可能であるが、潤滑性、潤滑耐久性、保水性の点から、特に、水酸化ナトリウム、水酸化カリウムの水溶液、アルカリ金属アルコキサイドのアルコール溶液などで処理するのが最も良い結果を与える。また、アルカリ処理後、水、生理食塩水などで十分洗浄を行い、アルカリを完全に除去することが好ましい。  Furthermore, by immersing in an alkaline solution and converting the carboxyl group of the maleic anhydride copolymer compound having an ester bond to an alkali salt, it is possible to produce a medical device excellent in lubricity, lubrication durability and water retention. As the alkali used for the alkali treatment, any alkali can be used as long as it can achieve the purpose of converting the carboxyl group into an alkali salt. In particular, from the viewpoint of lubricity, lubrication durability, and water retention, hydroxylation can be performed. Treatment with an aqueous solution of sodium, potassium hydroxide, an alcohol solution of an alkali metal alkoxide, etc. gives the best results. Moreover, it is preferable to thoroughly remove the alkali by thoroughly washing with water, physiological saline or the like after the alkali treatment.

以下に本発明に係る具体的な実施例および比較例について、より詳しく説明するが、本発明は以下の例に限定されるものではない。
<親水性化合物1>
Specific examples and comparative examples according to the present invention will be described in more detail below, but the present invention is not limited to the following examples.
<Hydrophilic compound 1>

メチルビニルエーテル・無水マレイン酸共重合化合物<IPS社製GANTREZ−AN−169>の無水マレイン酸をトリエチレングリコールモノメチルエーテルによって80モル%変性した部分エステルの3重量%MEKを調製した(コーティング溶液<1>)。
<親水性化合物2>
Methyl vinyl ether / maleic anhydride copolymer compound <GANTREZ-AN-169 manufactured by IPS Co., Ltd.> 3 wt% MEK of a partial ester obtained by modifying 80 mol% of maleic anhydride with triethylene glycol monomethyl ether was prepared (coating solution <1 >).
<Hydrophilic compound 2>

メチルビニルエーテル・無水マレイン酸共重合化合物<IPS社製GANTREZ−AN−169>の無水マレイン酸をトリエチレングリコールモノメチルエーテルによって40モル%変性した部分エステルの3重量%MEK溶液を調製した(コーティング溶液<2>)。
<親水性化合物3>
A 3 wt% MEK solution of a partial ester obtained by modifying maleic anhydride of methyl vinyl ether / maleic anhydride copolymer compound <GANTREZ-AN-169 manufactured by IPS> with triethylene glycol monomethyl ether was prepared (coating solution <2>).
<Hydrophilic compound 3>

メチルビニルエーテル・無水マレイン酸共重合化合物<IPS社製GANTREZ−AN−169>の無水マレイン酸をエチレングリコールモノメチルエーテルによって80モル%変性した部分エステルの3重量%MEK溶液を調製した(コーティング溶液<3>)。
<親水性化合物4>
A 3 wt% MEK solution of a partial ester obtained by modifying 80 mol% of maleic anhydride of a methyl vinyl ether / maleic anhydride copolymer compound <GANTREZ-AN-169 manufactured by IPS> with ethylene glycol monomethyl ether was prepared (coating solution <3 >).
<Hydrophilic compound 4>

メチルビニルエーテル・無水マレイン酸共重合化合物<IPS社製GANTREZ−AN−169>の無水マレイン酸をエタノールによって80モル%変性した部分エステルの3重量%MEK溶液を調製した(コーティング溶液<4>)。A 3 wt% MEK solution of a partial ester obtained by modifying 80 mol% of maleic anhydride of a methyl vinyl ether / maleic anhydride copolymer compound <GANTREZ-AN-169 manufactured by IPS> with ethanol was prepared (coating solution <4>).

ウレタン樹脂で被覆した血管造影用ガイドワイヤーの基材に、上記に調製したコーティング溶液<1>に浸漬することによって基材表面にコーティング溶液<1>を塗布し,乾燥し、潤滑剤を基材表面に固定した。その後,水酸化ナトリウムの水溶液中に浸漬処理した。さらに,水洗を行い,乾燥した。上記方法にて得られたワイヤーは水の中において優れた潤滑性を示した。また,このワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが3000回まで潤滑性を維持し,潤滑耐久性が優れることが確認された。さらに、保水性にも優れ、ワイヤーを吸水させた後に大気中に5分間放置しても,十分な潤滑性を有しており,保水性の面においても優れていた。また、生理食塩水に塩化カルシウムを0.1重量%濃度に溶解した水溶液に、ワイヤーを1時間浸漬後、水洗した後、ワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが2600回まで潤滑性を維持し、性能の低下はほとんど認められなかった。  The coating solution <1> is applied to the surface of the base material by immersing it in the coating solution <1> prepared above on the base material of the angiography guide wire coated with urethane resin, and the lubricant is applied to the base material. Fixed to the surface. Then, it was immersed in an aqueous solution of sodium hydroxide. Further, it was washed with water and dried. The wire obtained by the above method showed excellent lubricity in water. In addition, when this wire was handled by hand in water, the number of times that the lubrication was lost was measured, but it was confirmed that the lubricity was maintained up to 3000 times and the lubrication durability was excellent. . Furthermore, it was excellent in water retention, and even if it was allowed to stand in the air for 5 minutes after absorbing the wire, it had sufficient lubricity and was excellent in terms of water retention. Also, after immersing the wire in an aqueous solution of calcium chloride dissolved in physiological saline at a concentration of 0.1% by weight for 1 hour, washing with water, and then handling the wire in water, the lubricity is lost. The number of times of handling was measured, but the lubricity was maintained up to 2600 times, and almost no deterioration in performance was observed.

ウレタン樹脂で被覆した血管造影用ガイドワイヤーの基材に、上記に調製したコーティング溶液<3>に浸漬することによって基材表面にコーティング溶液<3>を塗布し、乾燥して、潤滑剤を基材表面に固定した。その後,水酸化ナトリウムの水溶液中に浸漬処理した。さらに,水洗を行い,乾燥した。上記方法にて得られたワイヤーは水の中において優れた潤滑性を示した。また,このワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが2800回まで潤滑性を維持し,潤滑耐久性が優れることが確認された。さらに、保水性にも優れ、ワイヤーを吸水させた後に大気中に5分間放置しても,十分な潤滑性を有しており,保水性の面においても優れていた。また、生理食塩水に塩化カルシウムを0.1重量%濃度に溶解した水溶液に、ワイヤーを1時間浸漬後、水洗した後、ワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが2500回まで潤滑性を維持し、性能の低下はほとんど認められなかった。
<比較例1>
Apply the coating solution <3> on the surface of the base material by immersing it in the coating solution <3> prepared above on the base material of the angiography guide wire coated with urethane resin, and dry it. Fixed to the material surface. Then, it was immersed in an aqueous solution of sodium hydroxide. Further, it was washed with water and dried. The wire obtained by the above method showed excellent lubricity in water. In addition, when this wire was handled by hand in water, the number of times of handling until the lubricity disappeared was measured, but it was confirmed that the lubricity was maintained up to 2800 times and the lubrication durability was excellent. . Furthermore, it was excellent in water retention, and even if it was allowed to stand in the air for 5 minutes after absorbing the wire, it had sufficient lubricity and was excellent in terms of water retention. Also, after immersing the wire in an aqueous solution of calcium chloride dissolved in physiological saline at a concentration of 0.1% by weight for 1 hour, washing with water, and then handling the wire in water, the lubricity is lost. The number of times of handling was measured, but the lubricity was maintained up to 2500 times, and the performance was hardly deteriorated.
<Comparative Example 1>

ウレタン樹脂で被覆した血管造影用ガイドワイヤーの基材に、上記に調製したコーティング溶液<2>に浸漬することによって基材表面にコーティング溶液<2>を塗布し,乾燥して、潤滑剤を基材表面に固定した。その後,水酸化ナトリウムの水溶液中に浸漬処理した。さらに,水洗を十分に行い,乾燥した。上記方法にて得られたワイヤーは水の中において優れた潤滑性を示した。また,このワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが2800回まで潤滑性を維持し,潤滑耐久性が優れることが確認された。さらに、保水性にも優れ、ワイヤーを吸水させた後に大気中に5分間放置しても,十分な潤滑性を有しており,保水性の面においても優れていた。しかしながら、生理食塩水に塩化カルシウムを0.1重量%濃度に溶解した水溶液に、ワイヤーを1時間浸漬後、水洗した後、ワイヤーを水の中において手で扱くことによって潤滑性が消失するまでの手扱きの回数を測定したが、600回までに潤滑耐久性が低下していた。
<比較例2>
Apply the coating solution <2> on the surface of the base material by immersing it in the coating solution <2> prepared above on the base material of the angiography guide wire coated with urethane resin, and dry it. Fixed to the material surface. Then, it was immersed in an aqueous solution of sodium hydroxide. Furthermore, it was washed thoroughly with water and dried. The wire obtained by the above method showed excellent lubricity in water. In addition, when this wire was handled by hand in water, the number of times of handling until the lubricity disappeared was measured, but it was confirmed that the lubricity was maintained up to 2800 times and the lubrication durability was excellent. . Furthermore, it was excellent in water retention, and even if it was allowed to stand in the air for 5 minutes after absorbing the wire, it had sufficient lubricity and was excellent in terms of water retention. However, after immersing the wire in an aqueous solution of calcium chloride dissolved in physiological saline at a concentration of 0.1% by weight for 1 hour, washing the wire, and then handling the wire in water until the lubricity disappears The number of times of handling was measured, but the lubrication durability had decreased by 600 times.
<Comparative example 2>

ウレタン樹脂で被覆した血管造影用ガイドワイヤーの基材に、メチルビニルエーテル無水マレイン酸共重合化合物<IPS社製GANTREZ−AN−169>の3重量%MEK溶液に浸漬することによって、コーティングし,乾燥を行なって、潤滑剤を基材表面に固定した。その後,水酸化ナトリウムの水溶液中に浸漬し,処理した。さらに,水洗を十分に行い,乾燥した。上記方法にて得られたワイヤーは水の中において優れた潤滑性を示した。また,このワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが3000回まで潤滑性を維持し,潤滑耐久性が優れることが確認された。さらに、保水性にも優れ、ワイヤーを吸水させた後に大気中に5分間放置しても,十分な潤滑性を有しており,保水性の面においても優れていた。しかしながら、生理食塩水に塩化カルシウムを0.1重量%濃度に溶解した水溶液に、ワイヤーを1時間浸漬後、水洗したワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが、200回までに潤滑耐久性が低下していた。
<比較例3>
An angiographic guidewire substrate coated with a urethane resin is coated by immersing it in a 3% by weight MEK solution of a methyl vinyl ether maleic anhydride copolymer compound <GANTREZ-AN-169 made by IPS> and dried. In operation, the lubricant was fixed to the substrate surface. Then, it was immersed in an aqueous solution of sodium hydroxide and treated. Furthermore, it was washed thoroughly with water and dried. The wire obtained by the above method showed excellent lubricity in water. In addition, when this wire was handled by hand in water, the number of times that the lubrication was lost was measured, but it was confirmed that the lubricity was maintained up to 3000 times and the lubrication durability was excellent. . Furthermore, it was excellent in water retention, and even if it was allowed to stand in the air for 5 minutes after absorbing the wire, it had sufficient lubricity and was excellent in terms of water retention. However, by immersing the wire in an aqueous solution of calcium chloride dissolved in physiological saline at a concentration of 0.1% by weight for 1 hour and then handling the washed wire by hand in water, the lubricity disappears. The number of times of handling was measured, but the lubrication durability was lowered by 200 times.
<Comparative Example 3>

ウレタン樹脂で被覆した血管造影用ガイドワイヤーの基材に、上記に調製したコーティング溶液<4>に浸漬することによって基材表面にコーティング溶液<4>を塗布し,乾燥を行ない、潤滑剤を基材表面に固定した。その後,水酸化ナトリウムの水溶液中に浸漬処理した。さらに,水洗を行い,乾燥した。上記方法にて得られたワイヤーは水の中において優れた潤滑性を示した。また,このワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが2500回まで潤滑性を維持し,潤滑耐久性が優れることが確認された。また、生理食塩水に塩化カルシウムを0.1重量%濃度に溶解した水溶液に、ワイヤーを1時間浸漬後、水洗した後、ワイヤーを水の中において手で扱くことにより,潤滑性が消失するまでの手扱きの回数を測定したが2200回まで潤滑性を維持し、性能の低下はほとんど認められなかった。しかしながら、ワイヤーを吸水させた後に大気中に2分間放置するだけで,潤滑性はかなり消失しており,3分後には完全に潤滑性は消失しており、保水性が大きく劣っていた。  Apply the coating solution <4> to the surface of the base material by immersing it in the coating solution <4> prepared above on the base material of the angiography guide wire coated with urethane resin, and dry it. Fixed to the material surface. Then, it was immersed in an aqueous solution of sodium hydroxide. Further, it was washed with water and dried. The wire obtained by the above method showed excellent lubricity in water. In addition, when this wire was handled by hand in water, the number of times that the lubrication was lost was measured, but it was confirmed that the lubricity was maintained up to 2500 times and the lubrication durability was excellent. . Also, after immersing the wire in an aqueous solution of calcium chloride dissolved in physiological saline at a concentration of 0.1% by weight for 1 hour, washing with water, and then handling the wire in water, the lubricity is lost. The number of times of handling was measured, but the lubricity was maintained up to 2200 times, and almost no deterioration in performance was observed. However, after the wire was absorbed in water and left in the atmosphere for 2 minutes, the lubricity disappeared considerably. After 3 minutes, the lubricity completely disappeared and the water retention was greatly inferior.

本発明により得られる技術によって、カルシウムイオンなど多価金属イオンに対しても優れた潤滑性、潤滑耐久性、保水性および耐多価金属イオン性を有するガイドワイヤーなどの医療用具を提供することが可能になった。特に、これまで、金属基材に無水マレイン酸共重合化合物をコーティングし、水酸化ナトリウムなどのアルカリで処理したガイドワイヤーは、血液や抗癌剤などによって潤滑性および潤滑耐久性が低下する傾向が強かったが、本発明に係るコーティング技術によって、これらの問題が解消され、新しい機能を有する医療用具などへの展開を含めた幅広い応用が期待できる。  By the technique obtained by the present invention, it is possible to provide a medical device such as a guide wire having excellent lubricity, lubrication durability, water retention and polyvalent metal ion resistance against polyvalent metal ions such as calcium ions. It became possible. In particular, until now, guidewires coated with a maleic anhydride copolymer compound on a metal substrate and treated with an alkali such as sodium hydroxide have had a strong tendency to decrease lubricity and lubrication durability due to blood and anticancer agents. However, with the coating technology according to the present invention, these problems are solved, and a wide range of applications including the development of medical devices having new functions can be expected.

Claims (3)

湿潤時に表面が潤滑性を有する医療用具であって、該医療用具を構成する基材の表面に、無水マレンイン酸を一成分とする共重合化合物と一般式 RO−(CHCHO)n−OH(Rは炭素数1または2のアルキル基、nは1〜5の整数)で表されるアルコール含有化合物との反応によって、共重合無水マレイン酸の50〜100モル%がハーフエステル化された無水マレイン酸共重合化合物が固定化されていることを特徴とする医療用具A medical device having a lubricious surface when wet, and a copolymer compound containing maleic anhydride as a component and a general formula RO- (CH 2 CH 2 O) n on the surface of a base material constituting the medical device By reaction with an alcohol-containing compound represented by —OH (R is an alkyl group having 1 or 2 carbon atoms, n is an integer of 1 to 5), 50 to 100 mol% of copolymerized maleic anhydride is half-esterified. Medical device characterized in that a maleic anhydride copolymer compound is immobilized 一般式 RO−(CHCHO)n−OHで表わされるアルコール化合物において、Rのアルキル基の炭素数が1であり、nの数が3であることを特徴とする請求項1に記載の医療用具In the general formula RO- (CH 2 CH 2 O) alcohol compound represented by n-OH, is the number of carbon atoms in the alkyl group of R 1, claim 1, wherein the number of n is 3 Medical tools 基材の表面に、無水マレイン酸を一成分とする共重合体とRO−(CHCHO)n−OHの反応によって、共重合無水マレイン酸の50〜100モル%がハーフエステル化された無水マレイン酸共重合化合物を塗布、乾燥後、さらに、アルカリ処理することを特徴とする医療用具の製造方法On the surface of the substrate by reaction of the copolymer and RO- (CH 2 CH 2 O) n-OH to maleic anhydride and one component, 50-100 mol% of copolymerized maleic anhydride has been half-esterifying A method for producing a medical device, wherein the maleic anhydride copolymer compound is coated, dried, and then treated with an alkali.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259269A (en) * 1984-06-04 1985-12-21 テルモ株式会社 Medical device and its production
JPH07194690A (en) * 1993-12-28 1995-08-01 Nissho Corp Medical device and its manufacturing method
JP2002172159A (en) * 2000-12-07 2002-06-18 Terumo Corp Medical care appliance for body embedding
JP2003299724A (en) * 2002-04-08 2003-10-21 Nippon Sherwood Medical Industries Ltd Medical implement and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259269A (en) * 1984-06-04 1985-12-21 テルモ株式会社 Medical device and its production
JPH07194690A (en) * 1993-12-28 1995-08-01 Nissho Corp Medical device and its manufacturing method
JP2002172159A (en) * 2000-12-07 2002-06-18 Terumo Corp Medical care appliance for body embedding
JP2003299724A (en) * 2002-04-08 2003-10-21 Nippon Sherwood Medical Industries Ltd Medical implement and its manufacturing method

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