JP2889294B2 - Catheter tube - Google Patents
Catheter tubeInfo
- Publication number
- JP2889294B2 JP2889294B2 JP1309714A JP30971489A JP2889294B2 JP 2889294 B2 JP2889294 B2 JP 2889294B2 JP 1309714 A JP1309714 A JP 1309714A JP 30971489 A JP30971489 A JP 30971489A JP 2889294 B2 JP2889294 B2 JP 2889294B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- tube
- predetermined length
- catheter tube
- cylindrical shape
- 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.)
- Expired - Lifetime
Links
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は人体の血管を通して患部に薬物を送り込むた
めのカテーテル用チューブに関するもので、特にチュー
ブに超弾性特性を付与して使用時の座屈を防止したもの
である。Description: TECHNICAL FIELD The present invention relates to a catheter tube for delivering a drug to a diseased part through a blood vessel of a human body, and particularly to a buckling when the tube is used by imparting superelastic properties to the tube. Is prevented.
従来カテーテル用チューブは、人体の血管内に挿入
し、チューブ内を通して液体の薬物を患部に送り込むた
めに用いられ、通常樹脂で造られている。しかしながら
カテーテル用チューブを人体の血管内に挿入する際、強
度上腰が弱いため、座屈を起し易く、操作しにくいとい
う問題があった。そのためカテーテル用チューブの血管
内への挿入には、ガイドワイヤを用いて患部に到達させ
ている。2. Description of the Related Art Conventionally, a catheter tube is used to be inserted into a blood vessel of a human body and deliver a liquid drug to an affected part through the tube, and is usually made of resin. However, when a catheter tube is inserted into a blood vessel of a human body, there is a problem that buckling is easily caused and operation is difficult because of low strength. Therefore, when inserting the catheter tube into a blood vessel, a guide wire is used to reach the affected part.
カテーテル用チューブは、上記の如く樹脂製であるた
め、強度上腰が弱いため、人体の血管内に挿入する際に
座屈を起し易い欠点がある。そこでチューブに適度の強
度を持たせるため、チューブの外径を大きくしている
が、血管を傷める恐れがある。また血管内への挿入には
ガイドワイヤを必要とするため、コスト高となるばかり
か、操作が複雑となる欠点があった。Since the catheter tube is made of a resin as described above, it has a drawback that it tends to buckle when inserted into a blood vessel of a human body because of its weakness in strength. Therefore, in order to give the tube an appropriate strength, the outer diameter of the tube is increased, but the blood vessel may be damaged. In addition, since a guide wire is required for insertion into a blood vessel, not only the cost is increased but also the operation is complicated.
本発明はこれに鑑み種々検討の結果、人体の血管内に
挿入するための適度な強度を有し、ガイドワイヤを用い
ることなく患部まで到達させることができるカテーテル
用チューブを開発したものである。In view of this, as a result of various studies, the present invention has developed a catheter tube having appropriate strength for insertion into a blood vessel of a human body and capable of reaching an affected part without using a guide wire.
即ち本発明チューブの一つは、超弾性特性を有するNi
−Ti系合金線材を円筒状に並べ、これを樹脂で円筒状に
被覆して先端部の所定長さをテーパー状としたことを特
徴とするもので、さらにチューブ先端部の所定長さを樹
脂のみとすることが望ましい。That is, one of the tubes of the present invention is made of Ni having superelastic properties.
-The Ti-based alloy wires are arranged in a cylindrical shape, and this is coated in a cylindrical shape with a resin, and the predetermined length of the distal end is tapered. It is desirable to use only.
本発明チューブの他の一つは、超弾性特性を有するNi
−Ti系合金線材を円筒状に並べ、その内周又は外周に金
属線材又は超弾性特性を有するNi−Ti系合金線材を螺旋
状に設け、これを樹脂で円筒状に被覆して先端部の所定
長さをテーパー状としたことを特徴とするもので、さら
にチューブ先端部の所定長さを樹脂のみとすることが望
ましい。Another one of the tubes of the present invention is Ni having superelastic properties.
-Ti-based alloy wires are arranged in a cylindrical shape, and a metal wire or a Ni-Ti-based alloy wire having superelastic properties is spirally provided on the inner or outer periphery, and this is covered with a resin in a cylindrical shape, and the tip portion is formed. It is characterized in that the predetermined length is tapered, and it is desirable that the predetermined length of the distal end of the tube is made of only resin.
また本発明チューブの更に他の一つは、超弾性特性を
有するNi−Ti系合金線材を中空撚線材とし、これを樹脂
で円筒状に被覆して先端部の所定長さをテーパー状と
し、さらに先端部の所定長さを樹脂のみとしたことを特
徴とするものである。Still another one of the tubes of the present invention is a hollow stranded wire made of a Ni-Ti alloy wire having superelastic properties, which is coated in a cylindrical shape with a resin to have a predetermined length of a tip portion in a tapered shape, Further, the predetermined length of the tip portion is made of only resin.
本発明は、上記の如くカテーテル用チューブにおい
て、超弾性特性を有するNi−Ti系合金（超弾性特性を有
するNi−Ti二元合金のみならず、これにAl,Cr,Fe,Nbの
内少なくとも１種以上を添加した超弾性特性を有する多
元素系合金も含む）線材を円筒状に並べ、これを樹脂で
円筒状に被覆してチューブとし、その先端部の所定長さ
をテーパー状とすることにより、カテーテル用チューブ
としての必要な強度と剛性（人体の血管内に挿入するの
に座屈しない強度）を付与したものである。The present invention relates to a catheter tube as described above, in which a Ni-Ti alloy having superelastic properties (not only a Ni-Ti binary alloy having superelastic properties, but also Al, Cr, Fe, and Nb). (Including multi-element alloys with super-elastic properties to which one or more types are added.) Wires are arranged in a cylindrical shape, and this is coated in a cylindrical shape with a resin to form a tube, and a predetermined length of the tip is tapered. This provides the necessary strength and rigidity as a catheter tube (strength that does not buckle when inserted into a blood vessel of a human body).
また本発明は、超弾性特性を有するNi−Ti系合金線材
を円筒状に並べ、その内周又は外周に金属線材、好まし
くは超弾性特性を有するNi−Ti系合金線材を密着螺旋又
は間隔をもった螺旋状に巻き付けたものを、樹脂で円筒
状に被覆してチューブとし、その先端部の所定長さをテ
ーパー状とすることにより、カテーテル用チューブとし
て、中空室内部に強圧力の液体を送り込むことを可能に
したものである。Further, the present invention, a Ni-Ti alloy wire having superelastic properties are arranged in a cylindrical shape, and a metal wire, preferably a Ni-Ti alloy wire having superelastic properties, is closely spiraled or spaced around the inner or outer periphery thereof. The spirally wound product is coated in a cylindrical shape with a resin to form a tube, and a predetermined length of the distal end portion is tapered so that a high-pressure liquid is supplied into the hollow chamber as a catheter tube. It is possible to send.
また本発明は、超弾性特性を有するNi−Ti系合金線材
を中空撚線状とし、これを樹脂で円筒状に被覆してチュ
ーブとし、その先端部の所定長さをテーパー状とするも
ので、上記と同様中空室内部に強圧力の液体の送り込み
を可能にしたものである。Further, the present invention is a Ni-Ti alloy wire having a superelastic property is formed into a hollow stranded wire, which is coated in a cylindrical shape with a resin to form a tube, and a predetermined length of the tip portion thereof is tapered. As described above, it is possible to feed a high-pressure liquid into the hollow chamber.
更に本発明は、チューブ先端部の所定長さを樹脂のみ
とすることにより、先端部に柔軟性を持たせて血管中へ
の挿入を容易にしたものである。Further, in the present invention, the predetermined length of the distal end portion of the tube is made only of resin, so that the distal end portion has flexibility to facilitate insertion into a blood vessel.
即ち本発明は、第１図に示すように超弾性特性を有す
るNi−Ti系合金線材（１）を円筒状に並べ、これをカテ
ーテルに使用する樹脂（２）により円筒状に被覆してチ
ューブとし、さらに第３図に示すように先端部に所定長
さのテーパー（４）を設けることにより、従来のカテー
テル用チューブにない腰の強さと、人体の血管内に挿入
する際の座屈を防止し、特に挿入する血管を傷める恐れ
が少なく、カテーテル用チューブのコンパクト化を可能
にすると共に、超弾性特性を有するところからガイドワ
イヤと同等の操作性を付与することができる。That is, according to the present invention, as shown in FIG. 1, a Ni-Ti alloy wire (1) having superelastic properties is arranged in a cylindrical shape, and this is coated in a cylindrical shape with a resin (2) used for a catheter. Further, by providing a taper (4) having a predetermined length at the distal end portion as shown in FIG. 3, the strength of the waist, which does not exist in the conventional catheter tube, and the buckling when inserted into the blood vessel of the human body are reduced. In addition, the catheter tube is less likely to damage the blood vessel to be inserted, and the catheter tube can be made compact. Further, since the catheter tube has superelastic properties, the same operability as a guide wire can be provided.
また本発明は、第２図に示すように超弾性特性を有す
るNi−Ti系合金線材（１）を円筒状に並べ、その外周又
は内周に金属線状、望ましくは超弾性特性を有するNi−
Ti系合金線材（３）を螺旋状に設け、これを樹脂（２）
によって円筒状に被覆し、さらに第３図に示すように先
端部に所定長さのテーパー（４）を設けてカテーテル用
チューブとするか、又は図に示してないが、超弾性特性
を有するNi−Ti系合金線材を中空撚線材とし、これを樹
脂によって円筒状に被覆し、さらに第３図に示すように
先端部に所定長さのテーパー（４）を設けてカテーテル
用チューブとすることにより、チューブ内に強圧力の液
体を送り込むことができるため、更にコンパクト化が可
能となり、従来ガイドワイヤを必要とし、複雑だった操
作が単純化し、血管の損傷を小さくすることができる。Further, as shown in FIG. 2, the present invention arranges a Ni-Ti alloy wire (1) having superelastic properties in a cylindrical shape, and forms a metal wire on the outer or inner circumference thereof, preferably Ni having superelastic properties. −
A Ti-based alloy wire (3) is provided in a spiral shape, and this is resin (2).
3 and a taper (4) having a predetermined length at the distal end portion as shown in FIG. 3 to form a catheter tube, or a nickel tube having superelastic properties (not shown). -By using a Ti-based alloy wire as a hollow stranded wire, coating this in a cylindrical shape with a resin, and further providing a taper (4) of a predetermined length at the distal end as shown in Fig. 3 to form a catheter tube. In addition, since a high-pressure liquid can be sent into the tube, further downsizing can be achieved, a conventional guide wire is required, complicated operations are simplified, and blood vessel damage can be reduced.
本発明は上記構成からなり、更に第４図に示すように
先端部の所定長さの部分（５）を樹脂（２）のみで形成
することにより、先端部に柔軟性を持たせることがで
き、操作性を一層向上することができる。The present invention has the above-mentioned structure, and furthermore, as shown in FIG. 4, by forming the portion (5) having a predetermined length of the tip portion only with the resin (2), the tip portion can have flexibility. The operability can be further improved.
以下本発明を実施例について説明する。 Hereinafter, the present invention will be described with reference to examples.
第１図に示すように超弾性特性を有する直径0.05mmの
Ni−Ti系合金（Ni51at％、Ti残部）線材（１）を円筒状
に並べ、これをポリウレタン製樹脂（２）で円筒状に被
覆して外径0.5mm、内径0.35mm、長さ1.5mのチューブと
し、さらに該チューブに第３図に示すように先端部の所
定長さのテーパー（４）を設けることにより本発明カテ
ーテル用チューブを作成した。As shown in FIG.
A Ni-Ti alloy (Ni51at%, Ti remainder) wire (1) is arranged in a cylindrical shape, and this is coated in a cylindrical shape with a polyurethane resin (2) to form an outer diameter of 0.5 mm, an inner diameter of 0.35 mm, and a length of 1.5 m. The tube for a catheter of the present invention was prepared by providing a taper (4) having a predetermined length at the distal end as shown in FIG.
このカテーテル用チューブを人体の血管内に挿入して
治療を行ったところ、非常に操作性が良く、液体の薬物
を患部に送り込むことができた。しかも血管内への挿入
性が著しく向上した。When the catheter tube was inserted into a blood vessel of a human body for treatment, the operability was very good, and the liquid drug could be delivered to the affected part. Moreover, the insertability into the blood vessel was significantly improved.
〔発明の効果〕 このように本発明カテーテル用チューブによれば、コ
ンパクト化が可能で、ガイドワイヤを必要とせず、ガイ
ドワイヤ並みの操作性を有し、かつ外径を細くすること
ができるところから人体組織の損傷も少ない等治療上顕
著な効果を奏するものである。[Effect of the Invention] As described above, according to the catheter tube of the present invention, it is possible to reduce the size, to eliminate the need for a guide wire, to have the same operability as a guide wire, and to reduce the outer diameter. Therefore, it has remarkable therapeutic effects, such as little damage to human body tissues.
第１図は本発明カテーテル用チューブの一例を示す説明
図、第２図は本発明カテーテル用チューブの他の一例を
示す説明図、第３図は本発明カテーテル用チューブの先
端部のテーパーの例を示す説明図、第４図は本発明カテ
ーテル用チューブの先端部を樹脂のみで形成した例を示
す説明図である。 １……超弾性特性を有するNi−Ti系合金線材 ２……ポリウレタン製の樹脂 ３……金属線材 ４……先端部の所定長さのテーパー部 ５……先端部の所定長さ部分FIG. 1 is an explanatory view showing an example of the catheter tube of the present invention, FIG. 2 is an explanatory view showing another example of the catheter tube of the present invention, and FIG. 3 is an example of a taper at the distal end of the catheter tube of the present invention. FIG. 4 is an explanatory view showing an example in which the distal end portion of the catheter tube of the present invention is formed only of resin. DESCRIPTION OF SYMBOLS 1 ... Ni-Ti alloy wire having superelastic property 2 ... Polyurethane resin 3 ... Metal wire 4 ... Tapered portion of predetermined length at tip end 5 ... Predetermined length portion at tip end
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤井 康次 神奈川県平塚市東八幡５丁目１番８号 古河特殊金属工業株式会社内 (56)参考文献 特開 昭61−193670（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) A61M 25/00 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Fujii 5-18-8 Higashi-Hachiman, Hiratsuka-shi, Kanagawa Prefecture Furukawa Special Metal Industry Co., Ltd. (56) References JP-A-61-193670 (JP, A) ( 58) Field surveyed (Int. Cl. 6 , DB name) A61M 25/00
Claims (5)
状に並べ、これを樹脂で円筒状に被覆して先端部の所定
長さをテーパー状としたことを特徴とするカテーテル用
チューブ。1. A catheter tube characterized in that Ni-Ti alloy wires having superelastic properties are arranged in a cylindrical shape, and this is coated in a cylindrical shape with a resin so that a predetermined length of a distal end portion is tapered. .
た請求項１記載のカテーテル用チューブ。2. The catheter tube according to claim 1, wherein the predetermined length of the distal end portion of the tube is made only of resin.
状に並べ、その内周又は外周に金属線材又は超弾性特性
を有するNi−Ti合金線材を螺旋状に設け、これを樹脂で
円筒状に被覆して先端部の所定長さをテーパー状とした
ことを特徴とするカテーテル用チューブ。3. A Ni-Ti alloy wire having superelastic properties is arranged in a cylindrical shape, and a metal wire or a Ni-Ti alloy wire having superelastic properties is spirally provided on the inner or outer periphery thereof, and this is made of resin. A tube for a catheter, wherein the tube is coated in a cylindrical shape and a predetermined length of a distal end portion is tapered.
た請求項３記載のカテーテル用チューブ。4. The catheter tube according to claim 3, wherein the predetermined length of the distal end portion of the tube is made only of resin.
撚線状とし、これを樹脂で円筒状に被覆して先端部の所
定長さをテーパー状とし、さらに先端部の所定長さを樹
脂のみとしたことを特徴とするカテーテル用チューブ。5. A Ni-Ti alloy wire having superelastic properties is formed into a hollow stranded wire, which is coated in a cylindrical shape with a resin so that a predetermined length of a tip portion is tapered, and a predetermined length of the tip portion is further defined. A catheter tube, characterized in that only a resin is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1309714A JP2889294B2 (en) | 1989-11-29 | 1989-11-29 | Catheter tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1309714A JP2889294B2 (en) | 1989-11-29 | 1989-11-29 | Catheter tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03168155A JPH03168155A (en) | 1991-07-19 |
| JP2889294B2 true JP2889294B2 (en) | 1999-05-10 |
Family
ID=17996410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1309714A Expired - Lifetime JP2889294B2 (en) | 1989-11-29 | 1989-11-29 | Catheter tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2889294B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437282A (en) * | 1993-10-29 | 1995-08-01 | Boston Scientific Corporation | Drive shaft for acoustic imaging catheters and flexible catheters |
| BR0102116B1 (en) | 2000-05-10 | 2010-09-21 | component for a breathing circuit member. | |
| US7559324B2 (en) | 2000-06-21 | 2009-07-14 | Fisher & Paykel Healthcare Limited | Conduit with heated wick |
| AU2003244171B2 (en) | 2002-09-09 | 2007-11-15 | Fisher & Paykel Healthcare Limited | Limb for Breathing Circuit |
| US7493902B2 (en) | 2003-05-30 | 2009-02-24 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
| AU2004203870B2 (en) | 2003-09-17 | 2011-03-03 | Fisher & Paykel Healthcare Limited | Breathable Respiratory Mask |
| US20090012500A1 (en) * | 2005-02-10 | 2009-01-08 | Kaneka Corporation | Medical Catheter Tube and Method of Producing the Same |
| EP3909631A1 (en) | 2009-12-22 | 2021-11-17 | Fisher & Paykel Healthcare Limited | Components for medical circuits |
-
1989
- 1989-11-29 JP JP1309714A patent/JP2889294B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03168155A (en) | 1991-07-19 |
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