JPH03264073A - Guide wire core member for catheter - Google Patents
Guide wire core member for catheterInfo
- Publication number
- JPH03264073A JPH03264073A JP2062602A JP6260290A JPH03264073A JP H03264073 A JPH03264073 A JP H03264073A JP 2062602 A JP2062602 A JP 2062602A JP 6260290 A JP6260290 A JP 6260290A JP H03264073 A JPH03264073 A JP H03264073A
- Authority
- JP
- Japan
- Prior art keywords
- group
- catheter
- top edge
- edge part
- linear body
- 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
- 239000007769 metal material Substances 0.000 claims abstract description 14
- 229910018195 Ni—Co—Ti Inorganic materials 0.000 claims abstract 2
- 239000011162 core material Substances 0.000 claims description 15
- 229910018643 Mn—Si Inorganic materials 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 5
- 229910052742 iron Inorganic materials 0.000 claims 2
- 229910018106 Ni—C Inorganic materials 0.000 claims 1
- 229910018598 Si-Co Inorganic materials 0.000 claims 1
- 229910008453 Si—Co Inorganic materials 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910020517 Co—Ti Inorganic materials 0.000 description 1
- 229910019590 Cr-N Inorganic materials 0.000 description 1
- 229910019588 Cr—N Inorganic materials 0.000 description 1
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001020 rhythmical effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Landscapes
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は治療用又は検査用カテーテルを血管、消化管、
気管、その他律腔内の所定部位にまで導入、留置するた
めのガイドワイヤー用芯材に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention provides therapeutic or testing catheters for use in blood vessels, gastrointestinal tracts,
The present invention relates to a core material for a guide wire that is introduced and placed in the trachea or other predetermined parts of the rhythmic cavity.
［従来の技術］
カテーテルを血管等の分枝抹消部に案内するガイドワイ
ヤーには次のような特性か必要である。[Prior Art] A guide wire for guiding a catheter to a peripheral branch of a blood vessel or the like must have the following characteristics.
（１）先端の角度を自由に変えることができること、
（２）前後左右に自由に操作できること、（３）柔軟性
があること、
（４）Ｘ線透過性が悪いこと、
（５）潤滑性がよいこと、及び
（６）押しても曲がりにくい、すなわち強い力で押すこ
とができること。(1) The angle of the tip can be changed freely, (2) It can be operated freely back and forth, left and right, (3) It has flexibility, (4) It has poor X-ray transparency, (5) It has good lubricity. (6) It should not bend easily when pushed, that is, it should be able to be pushed with strong force.
従来、このような特性を有するガイドワイヤーとしてス
テンレス鋼線又はピアノ線からなるコイル状ガイドワイ
ヤー もしくはプラスチックモノフィラメントからなる
ガイドワイヤーが知られている。又、芯材に形状記憶合
金（例えばＮ ｉ −Ｔ ｉ系合金）を用いたものも知
られている。Conventionally, as guide wires having such characteristics, coiled guide wires made of stainless steel wire or piano wire, or guide wires made of plastic monofilament are known. Also known are those using a shape memory alloy (for example, a N i -T i alloy) for the core material.
ステンレス鋼線又はピアノ線を用いた従来のガイドワイ
ヤーは塑性変形し易く、手元操作によってはガイドワイ
ヤーを座屈させてしまうことがある。二〇座屈変形部は
カテーテルの進行に大きな抵抗となってカテーテルの円
滑な導入操作を困難にさせる。Conventional guide wires made of stainless steel wire or piano wire are prone to plastic deformation, and may buckle depending on manual manipulation. 20 The buckling deformation portion creates a large resistance to the advancement of the catheter, making it difficult to smoothly introduce the catheter.
又、形状記憶合金を用いたガイドワイヤーは柔軟で、か
なり変形（約８％の歪み）に対しても復元性を有するた
め、操作中、折れ曲がり難く、曲がりぐせが、つき難い
などの利点を有する。In addition, guide wires using shape memory alloys are flexible and have the ability to recover even after considerable deformation (approximately 8% strain), so they have the advantage of being difficult to bend or curl during operation. .
しかし、このガイドワイヤーは先端部の弾性が大きいが
柔軟性の点で問題があり、又、基端部の径が０，５■以
下の場合は剛性が不十分でトルク伝達性に劣るという問
題がある。更にこの合金は線状へ加工するのが難かしく
、高価であるという点でも問題があった。However, this guide wire has a problem in terms of flexibility although the tip part has high elasticity, and if the diameter of the proximal end is 0.5 mm or less, the rigidity is insufficient and the torque transmission performance is poor. There is. Furthermore, this alloy has problems in that it is difficult to process into a linear shape and is expensive.
［発明が解決しようとする課題］
本発明は、こうした実状に鑑み上記したガイドワイヤー
としての要求性能を高い水準で保持し、カテーテルの導
入、操作中に受ける応力に対して塑性変形することがな
く、かつカテーテルを円滑に所定部位に案内できるよう
に、その先端部は十分な柔軟性を有するカテーテル用ガ
イドワイヤー芯材を提供することを目的とするものであ
る。[Problems to be Solved by the Invention] In view of these circumstances, the present invention maintains the above-mentioned required performance as a guidewire at a high level, and does not undergo plastic deformation due to stress received during catheter introduction and operation. It is an object of the present invention to provide a guide wire core material for a catheter, which has sufficient flexibility at its distal end so that the catheter can be smoothly guided to a predetermined site.
［課題を解決するための手段］
本発明者らは、前記した課題を解決するため鋭意検討と
した結果、ガイドワイヤー芯材をＦｅ系超弾性金属材料
の線状体から構成し、かつ先端部に向って柔軟性が順次
大きくなるように少なくとも先端部をテーパー状にする
ことが有効であることを知見し、本発明に至った。[Means for Solving the Problems] As a result of intensive studies to solve the above-mentioned problems, the present inventors constructed a guidewire core material from a linear body of Fe-based superelastic metal material, and It has been found that it is effective to make at least the tip portion tapered so that the flexibility increases gradually toward the tip, and the present invention was achieved based on this finding.
すなわち、本発明はＦｅ系超弾性金属材料からなる線状
体で構成されるカテーテル用ガイドワイヤー芯材におい
て、先端部に向って柔軟性が順次大きくなるように先端
部をテーパー状としたカテーテル用ガイドワイヤー芯材
である。That is, the present invention relates to a guidewire core material for a catheter that is composed of a linear body made of a Fe-based superelastic metal material, and has a tapered distal end so that flexibility gradually increases toward the distal end. It is the core material of the guide wire.
本発明のカテーテルガイドワイヤー用芯材は、上記のよ
うにＦｅ系超弾性金属材料線状体の基端部の剛性を比較
的大きくし、先端部にテーパーを付けたことにより先端
部の柔軟性を高め、かつ容易に塑性変形しないようにし
たものである。As described above, the core material for a catheter guide wire of the present invention has relatively high rigidity at the proximal end of the Fe-based superelastic metallic material linear body and tapers at the distal end, thereby making the distal end flexible. It is designed to have a high temperature and not be easily plastically deformed.
本発明の芯材には弾性の大きい金属材料が用いられるが
、例えばＦｅ−Ｐｔ系、Ｆｅ−Ｐｄ系合金、Ｆｅ−Ｎｉ
−Ｃｏ−Ｔｉ系合金、ＦｅＮｉ−Ｃ系合金、Ｆｅ−Ｍｎ
−３ｉ系合金、Ｆｅ−Ｃｒ−Ｍｎ系合金、Ｆｅ−Ｃｒ−
Ｍｎ−Ｓｉ系合金、Ｆ ｅ−Ｃｒ−Ｎ ｉ −Ｍｎ−Ｓ
ｉ系合金、Ｆ ｅ−Ｃｒ−Ｎ ｉ −Ｍｎ−Ｓ １−Ｃ
ｏ系合金等のＦｅ系超弾性金属材料を用いるのが特に好
ましい。このようなＦｅ系超弾性金属は線状体への加工
及びテーパー加工も容易である。Metal materials with high elasticity are used for the core material of the present invention, such as Fe-Pt alloy, Fe-Pd alloy, Fe-Ni
-Co-Ti alloy, FeNi-C alloy, Fe-Mn
-3i alloy, Fe-Cr-Mn alloy, Fe-Cr-
Mn-Si alloy, Fe-Cr-Ni-Mn-S
i-based alloy, Fe-Cr-N i -Mn-S 1-C
It is particularly preferable to use Fe-based superelastic metal materials such as o-based alloys. Such Fe-based superelastic metal can be easily processed into a linear body and tapered.
［実施例］
以下、この発明を実施例に基づいて、更に詳細に説明す
る。[Examples] Hereinafter, the present invention will be described in more detail based on Examples.
実施例１
第１図はこの発明に係わるカテーテルのガイドワイヤー
の芯材の長手方向の断面の模式図である。Example 1 FIG. 1 is a schematic diagram of a longitudinal cross-section of a core material of a guide wire of a catheter according to the present invention.
この芯材はＦｅ系超弾性金属材料からなる線状体であっ
て、図示のごとく基端部の直径が０．１ないし０．５ｍ
ｍ、先端部の直径が０．０１ないし０．１ｍｍの先端に
向けて次第に細くなったものである。なお、本明細書中
においてＦｅ系超弾性金属材料とは、回復可能なひずみ
が大きく、数％〜士数％にも達し、ひずみが増加しても
応力がある一定以上大きくならないものをいう。各種Ｆ
ｅ系超弾性金属材料の好ましい成分範囲を表１に示す。This core material is a linear body made of Fe-based superelastic metal material, and as shown in the figure, the diameter of the base end is 0.1 to 0.5 m.
m, the diameter of the tip gradually tapers toward the tip of 0.01 to 0.1 mm. In this specification, the Fe-based superelastic metal material refers to a material whose recoverable strain is large, reaching several percent to several percent, and whose stress does not increase beyond a certain level even if the strain increases. Various F
Table 1 shows the preferred range of components of the e-based superelastic metal material.
第１表Table 1
第１図は本発明に係わるカテーテルのガイワイヤー用芯
材の断面図。
１・・・先端部、２・・・基端部。
ドFIG. 1 is a sectional view of a core material for a guy wire of a catheter according to the present invention. 1... distal end, 2... proximal end. de
Claims (2)
カテーテル用ガイドワイヤ芯材において、先端部に向っ
て柔軟性が順次大きくなるように先端部をテーパー状と
したことを特徴とするカテーテル用ガイドワイヤー芯材
。(1) A guide wire core material for a catheter consisting of a linear body made of a superelastic iron-based metal material is characterized in that the tip part is tapered so that the flexibility gradually increases toward the tip part. Guidewire core material for catheters.
系、Ｆｅ−Ｎｉ−Ｃｏ−Ｔｉ系、Ｆｅ−Ｎｉ−Ｃ系、Ｆ
ｅ−Ｍｎ−Ｓｉ系、Ｆｅ−Ｃｒ−Ｍｎ系、Ｆｅ−Ｃｒ−
Ｍｎ−Ｓｉ系、Ｆｅ−Ｃｒ−Ｎｉ−Ｍｎ−Ｓｉ系、Ｆｅ
− Ｃｒ−Ｎｉ−Ｍｎ−Ｓｉ−Ｃｏ系からなる群から選択さ
れる請求項（１）記載のカテーテル用ガイドワイヤー芯
材。(2) Iron-based superelastic metal material is Fe-Pt-based, Fe-Pd
system, Fe-Ni-Co-Ti system, Fe-Ni-C system, F
e-Mn-Si system, Fe-Cr-Mn system, Fe-Cr-
Mn-Si system, Fe-Cr-Ni-Mn-Si system, Fe
- The catheter guidewire core material according to claim 1, wherein the core material is selected from the group consisting of Cr-Ni-Mn-Si-Co system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2062602A JPH03264073A (en) | 1990-03-15 | 1990-03-15 | Guide wire core member for catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2062602A JPH03264073A (en) | 1990-03-15 | 1990-03-15 | Guide wire core member for catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03264073A true JPH03264073A (en) | 1991-11-25 |
Family
ID=13205043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2062602A Pending JPH03264073A (en) | 1990-03-15 | 1990-03-15 | Guide wire core member for catheter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03264073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008139829A1 (en) | 2007-05-09 | 2008-11-20 | Japan Science And Technology Agency | Guide wire and stent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6063065A (en) * | 1983-09-16 | 1985-04-11 | テルモ株式会社 | Guide wire for catheter |
| JPS6362841A (en) * | 1986-09-03 | 1988-03-19 | Tanaka Kikinzoku Kogyo Kk | Superelastic alloy material |
-
1990
- 1990-03-15 JP JP2062602A patent/JPH03264073A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6063065A (en) * | 1983-09-16 | 1985-04-11 | テルモ株式会社 | Guide wire for catheter |
| JPS6362841A (en) * | 1986-09-03 | 1988-03-19 | Tanaka Kikinzoku Kogyo Kk | Superelastic alloy material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008139829A1 (en) | 2007-05-09 | 2008-11-20 | Japan Science And Technology Agency | Guide wire and stent |
| US8052620B2 (en) | 2007-05-09 | 2011-11-08 | Japan Science And Technology Agency | Guide wire and stent |
| US8568470B2 (en) | 2007-05-09 | 2013-10-29 | Japan Science And Technology Agency | Guide wire and stent |
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