JPS61193670A - Catheter - Google Patents
CatheterInfo
- Publication number
- JPS61193670A JPS61193670A JP60033678A JP3367885A JPS61193670A JP S61193670 A JPS61193670 A JP S61193670A JP 60033678 A JP60033678 A JP 60033678A JP 3367885 A JP3367885 A JP 3367885A JP S61193670 A JPS61193670 A JP S61193670A
- Authority
- JP
- Japan
- Prior art keywords
- catheter
- alloy
- wire
- stainless steel
- shape memory
- 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.)
- Granted
Links
Landscapes
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は造影剤注入等に用いるカテーテルの構造に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a catheter used for contrast agent injection and the like.
一般に、造影剤注入などに用いられるカテーテルはステ
ンレス線を編み込んだポリエチレン製チューブが用いら
れている。Generally, catheters used for contrast agent injection are made of polyethylene tubes woven with stainless steel wire.
ところで、カテーテルに要求される特性としては、■末
端部からのねじりが先端部に容易に伝達されること。■
血管を通して目的部位に導かれるため、しなやかさを有
し゛ていること。By the way, the characteristics required of a catheter include: (1) Twisting from the distal end is easily transmitted to the distal end. ■
It must be flexible because it is guided to the target area through blood vessels.
■血管を傷付けないために導入先端部は他の部分に比べ
てよシ高いしなやかさを有すること。■The introduction tip must be more flexible than other parts to avoid damaging blood vessels.
が要求される。is required.
ところが、従来のカテーテルにおいては、前述のように
ステンレス線を編み込んだポリエチレン製チューブが用
いられているため、上述の■〜■の特性を備えておらず
、これらの特性をカテーテルと一緒に用いるガイドワイ
ヤに補完させていた。このように従来のカテーテルは上
述の■〜■の特性を備えておらず、従ってガイドワイヤ
の構造が複雑となる問題点があった。However, since conventional catheters use polyethylene tubes woven with stainless steel wire as mentioned above, they do not have the above-mentioned characteristics. It was complemented by a wire. As described above, conventional catheters do not have the above-mentioned characteristics (1) to (3), and therefore have the problem that the structure of the guide wire is complicated.
本発明の目的はカテーテル自体に柔軟性、しなやかさを
持たせ、カテーテルと一緒に用いられるガイドワイヤの
構造を簡単にすることができるカテーテルを提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a catheter in which the catheter itself has flexibility and pliability, and the structure of a guide wire used together with the catheter can be simplified.
あるいはコイル状に形成された管状部材に熱可塑性樹脂
がコーティングされて構成されていることを特徴とする
カテーテルが得られる。Alternatively, a catheter characterized in that it is constructed by coating a thermoplastic resin on a tubular member formed in a coil shape can be obtained.
以下1本発明について実施例に基づいて説明するが、そ
の前に形状記憶合金について概説する。The present invention will be described below based on examples, but before that, a general outline of shape memory alloys will be given.
チタンニッケル合金(以下T i N i合金という。Titanium nickel alloy (hereinafter referred to as TiNi alloy).
)は熱弾性マルテンサイト変態の逆変態に付随して顕著
な形状記憶効果(以下SMEと略称する。)及びこのS
MEに付随して擬弾性効果(以下PEと略称する。)を
示すことが知られている。) is a remarkable shape memory effect (hereinafter abbreviated as SME) accompanying the reverse transformation of thermoelastic martensitic transformation and this S
It is known that a pseudoelastic effect (hereinafter abbreviated as PE) is exhibited in association with ME.
SMEとはT1Ni合金が見かけ上の塑性変形を受けた
場合、所謂逆変態温度(以下Af点と略称する。)にこ
の合金を加熱すると初期の形状に復帰する性質のことで
ある。またPEとはA4点以上の温度において、 T1
Ni合金に応力負荷をかけて見かけ上の塑性変形を与え
た場合、応力除去と同時に合金の形状が完全に復元する
性質のことである。SME refers to the property that when a T1Ni alloy undergoes apparent plastic deformation, it returns to its initial shape when this alloy is heated to a so-called reverse transformation temperature (hereinafter abbreviated as Af point). In addition, PE is T1 at a temperature of A4 point or higher.
This refers to the property that when stress is applied to a Ni alloy to cause apparent plastic deformation, the shape of the alloy is completely restored as soon as the stress is removed.
このT1Ni合金をはじめとして、SME、PEを示す
所謂形状記憶合金は感温センサ、アクチュヒータ、エネ
ルギー貯蔵材としての応用が期待されているところであ
る。So-called shape memory alloys such as SME and PE, including this T1Ni alloy, are expected to be applied as temperature sensors, actuator heaters, and energy storage materials.
次に本発明の実施例について説明すると、51原子濃度
(以下原子濃度をat%と略称する)のNiを含有する
Ti−Ni合金線(以下このTi−Ni合金をTi−5
1at%Ni合金という。)に通常の冷間加工を施した
後、この合金線を用いて網形状に編んだ管状部材(以下
単に網部材という。)及びヘリカルコイル状に成形され
た管状部材(以下単にヘリカルコイルという。)を製作
した。次に、これら管部材を温度400℃において10
〜30分間熱処理を行った。なお、熱処理後のTi−5
1at%Ni合金線の線径は0.3mmであり、まだ管
径は6叫である。Next, an example of the present invention will be described.
It is called 1 at% Ni alloy. ) is subjected to normal cold working, and then the alloy wire is used to knit a tubular member into a net shape (hereinafter simply referred to as a net member) and a tubular member formed into a helical coil shape (hereinafter simply referred to as a helical coil). ) was produced. Next, these tube members were heated for 10 minutes at a temperature of 400°C.
Heat treatment was performed for ~30 minutes. In addition, Ti-5 after heat treatment
The wire diameter of the 1 at% Ni alloy wire is 0.3 mm, and the tube diameter is still 6 mm.
上記の熱処理が施された網部材を温度(T)=0〜40
℃の範囲で引張試験にかけ、この結果に基づいて算出し
た応力−ひすみ曲線を第2図に示す。一般にステンレス
線の弾性限界が伸びで
7.0.2%程度であるのに比べて、第2図に示すよう
にTi−51at%Ni合金線は5%程度まで伸ばして
も完全に復元することがわかる。このことは上記のTi
−51at%Ni合金線はステンレス線に比べてしなや
かさにおいて遥かに優れていることを意味している。な
お、上述の特質はヘリカルコイルにおいても同様である
。The net member subjected to the above heat treatment is heated to a temperature (T) of 0 to 40.
A stress-strain curve calculated based on the results of a tensile test at a temperature range of .degree. C. is shown in FIG. In general, the elastic limit of stainless steel wire is about 7.0.2% in elongation, but as shown in Figure 2, Ti-51at%Ni alloy wire can be completely restored even if stretched to about 5%. I understand. This means that the above Ti
This means that the -51 at% Ni alloy wire is far superior in flexibility to the stainless steel wire. Note that the above-mentioned characteristics are also the same for helical coils.
次に第1図(、)及び(b)を参照して、上記の網部材
1及びヘリカルコイル2をそれぞれポリエチレン融液槽
の中に浸漬して、薄くコーティング処理を施し、即ち網
部材1及びヘリカルコイル2にポリエチレン被覆膜3を
施し、カテーテル4を製作した。まだ比較のため、 T
i−51at%Ni製網部材及びヘリカルコイルと同形
状のステンレス練製の網部材及びヘリカルコイルを製作
し。Next, referring to FIGS. 1(,) and (b), the above net member 1 and helical coil 2 are respectively immersed in a polyethylene melt bath and subjected to a thin coating treatment. A catheter 4 was manufactured by applying a polyethylene coating 3 to the helical coil 2. Still for comparison, T
A stainless steel net member and helical coil having the same shape as the i-51 at% Ni net member and helical coil were manufactured.
このステンレス線製網部材及びヘリカルコイルをそれぞ
れポリエチレン融液槽の中に浸漬して。This stainless wire net member and helical coil were each immersed in a polyethylene melt tank.
薄くコーティング処理を施し、カテーテル(図示せず)
を製作した。A thin coating is applied to the catheter (not shown).
was produced.
上述のTi−51at%Niカテーテル4及びステンレ
スカテーテルにそれぞれ180度曲げ試験を行なった。A 180 degree bending test was conducted on the Ti-51 at% Ni catheter 4 and the stainless steel catheter described above.
その結果、 Ti−51at%Niカテーテルの場合は
自発的にほぼ完全に元に復元したが、ステンレスカテー
テルの場合はひずみが残留し。As a result, in the case of the Ti-51at%Ni catheter, it spontaneously almost completely recovered, but in the case of the stainless steel catheter, some strain remained.
元の形には戻らなかった。It never returned to its original shape.
さらに、180度の曲げを繰り返しく100回)行った
場合、 Ti−51at%Niカテーテルは全く変形が
なかったが、一方ステンレスカテーテルは30回繰シ返
し曲げると折れてしまった。Furthermore, when the Ti-51at%Ni catheter was repeatedly bent 180 degrees (100 times), there was no deformation at all, whereas the stainless steel catheter broke when it was repeatedly bent 30 times.
このようにTi−51atq6N+カテーテルの場合は
。In this way, in the case of Ti-51atq6N+ catheter.
ステンレスカテーテルの場合に比べて、カテーテル自体
がしなやかであり、従ってガイドワイヤは先端部のみ柔
軟性を有していればよく、従来に比べてガイドワイヤの
構造が簡単となる。The catheter itself is more flexible than a stainless steel catheter, so the guidewire only needs to be flexible at its tip, making the structure of the guidewire simpler than in the past.
またTi−51at%Niカテーテルは極めて良好のし
なやかさを有しているため、挿入血管に沿って無理なく
、変形及び回復が可能であるから血管を傷付けることも
少ない。さらに* ’rl−51at%Niカテーテル
は繰り返しの曲げに強いから。Furthermore, since the Ti-51at%Ni catheter has extremely good flexibility, it can be easily deformed and restored along the blood vessel into which it is inserted, so that it is less likely to damage the blood vessel. Furthermore, *'rl-51at%Ni catheter is resistant to repeated bending.
ステンレスカテーテルに比べて、繰り返しの使用が可能
であり、コストの低減がはかれる。Compared to stainless steel catheters, it can be used repeatedly and costs are reduced.
彦お、上述したTi−Ni合金線は人体内の使用を考慮
した場合、 Ni 〉50.3at%、冷間加工率(9
)〜50%、熱処理条件350〜400℃であることが
望ましい。また、 Ti−Ni合金線の線径及び網部材
あるいぼヘリカルコイルの径とポリエチレン被覆膜の厚
みとの関係はカテーテルのしなやかさを損うことがない
ように調整される。Hiko, when considering the use in the human body, the Ti-Ni alloy wire mentioned above has a Ni > 50.3 at% and a cold working rate (9
) to 50%, and the heat treatment conditions are preferably 350 to 400°C. Further, the relationship between the wire diameter of the Ti--Ni alloy wire, the diameter of the mesh member or warto-helical coil, and the thickness of the polyethylene coating film is adjusted so as not to impair the flexibility of the catheter.
以下余白
〔発明の効果〕
以上説明したように9本発明によればカテーテル自体が
柔軟性及びしなやかさを持っているから、カテーテルと
一緒に用いられるガイドワイヤの構造を簡単にすること
ができる。Margins below [Effects of the Invention] As explained above, according to the present invention, the catheter itself has flexibility and pliability, so the structure of the guide wire used together with the catheter can be simplified.
第1図(、)は本発明によるカテーテルの一実施例を示
す断面図、第1図(b)は本発明によるカテーテルの他
の実施例を示す断面図、第2図は本発明に用いられるT
i−51at%Ni合金線を網状に編んだ管部材の応力
−ひすみ曲線を表わす図である。
1・・・網部材、2・・・ヘリカルコイル。
3・・・ポリエチレン被覆膜、4・・・チューブ。FIG. 1(,) is a sectional view showing one embodiment of the catheter according to the present invention, FIG. 1(b) is a sectional view showing another embodiment of the catheter according to the present invention, and FIG. 2 is a sectional view showing another embodiment of the catheter according to the present invention. T
It is a figure showing the stress-strain curve of the tube member which knitted i-51at%Ni alloy wire in the shape of a net. 1... Net member, 2... Helical coil. 3... Polyethylene coating membrane, 4... Tube.
Claims (1)
よって網状に編まれたあるいはコイル状に形成された管
状部材に熱可塑性樹脂がコーティングされて構成されて
いることを特徴とするカテーテル。 2、特許請求の範囲第1項の記載において、前記形状記
憶合金はチタン−ニッケル合金であって、該ニッケルの
原子濃度が50.3%以上であり、かつ前記チタン−ニ
ッケル合金は冷間加工率50〜50%及び熱処理条件3
50〜400℃で加工処理されていることを特徴とする
カテーテル。 3、特許請求の範囲第1項及び第2項の記載において、
前記熱可塑性樹脂はポリエチレンであることを特徴とす
るカテーテル。[Claims] 1. A tubular member knitted or coiled with shape memory alloy wire exhibiting thermoelastic martensitic transformation is coated with a thermoplastic resin. catheter. 2. In the statement of claim 1, the shape memory alloy is a titanium-nickel alloy, the atomic concentration of nickel is 50.3% or more, and the titanium-nickel alloy is cold worked. rate 50-50% and heat treatment conditions 3
A catheter characterized in that it is processed at a temperature of 50 to 400°C. 3. In the description of claims 1 and 2,
A catheter characterized in that the thermoplastic resin is polyethylene.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60033678A JPS61193670A (en) | 1985-02-23 | 1985-02-23 | Catheter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60033678A JPS61193670A (en) | 1985-02-23 | 1985-02-23 | Catheter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61193670A true JPS61193670A (en) | 1986-08-28 |
JPH0230266B2 JPH0230266B2 (en) | 1990-07-05 |
Family
ID=12393100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60033678A Granted JPS61193670A (en) | 1985-02-23 | 1985-02-23 | Catheter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61193670A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6480367A (en) * | 1987-09-21 | 1989-03-27 | Terumo Corp | Member for correcting ureter |
JPH035436U (en) * | 1989-06-07 | 1991-01-21 | ||
JPH03188875A (en) * | 1989-12-20 | 1991-08-16 | Terumo Corp | Catheter |
JPH0428375A (en) * | 1990-05-24 | 1992-01-30 | Nippon Zeon Co Ltd | Medical tube |
JPH0613846U (en) * | 1992-02-26 | 1994-02-22 | 富士システムズ株式会社 | Medical catheter |
WO2003075996A1 (en) * | 2002-02-27 | 2003-09-18 | Kaneka Corporation | Balloon catheter for tentative vaso-occlusion |
JP2008086755A (en) * | 2006-09-01 | 2008-04-17 | Nova Lung Gmbh | Device for introducing cannula into hollow organ |
US8419671B2 (en) | 2002-12-23 | 2013-04-16 | Novalung Gmbh | Appliance for cannulation of a blood vessel |
JP2020525696A (en) * | 2017-06-30 | 2020-08-27 | サエス・ゲッターズ・エッセ・ピ・ア | Actuator assembly including shape memory alloy wire and coating having particles of phase change material |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868956A (en) * | 1972-06-05 | 1975-03-04 | Ralph J Alfidi | Vessel implantable appliance and method of implanting it |
JPS50141187A (en) * | 1974-03-01 | 1975-11-13 | ||
JPS57148926A (en) * | 1981-03-06 | 1982-09-14 | Olympus Optical Co | Tube for pouring comtrast agent |
JPS57164034A (en) * | 1981-04-02 | 1982-10-08 | Olympus Optical Co | Flexible tube for endoscope |
JPS5967968A (en) * | 1982-10-08 | 1984-04-17 | テルモ株式会社 | Guide wire |
-
1985
- 1985-02-23 JP JP60033678A patent/JPS61193670A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868956A (en) * | 1972-06-05 | 1975-03-04 | Ralph J Alfidi | Vessel implantable appliance and method of implanting it |
JPS50141187A (en) * | 1974-03-01 | 1975-11-13 | ||
JPS57148926A (en) * | 1981-03-06 | 1982-09-14 | Olympus Optical Co | Tube for pouring comtrast agent |
JPS57164034A (en) * | 1981-04-02 | 1982-10-08 | Olympus Optical Co | Flexible tube for endoscope |
JPS5967968A (en) * | 1982-10-08 | 1984-04-17 | テルモ株式会社 | Guide wire |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6480367A (en) * | 1987-09-21 | 1989-03-27 | Terumo Corp | Member for correcting ureter |
JPH0510938B2 (en) * | 1987-09-21 | 1993-02-12 | Terumo Corp | |
JPH035436U (en) * | 1989-06-07 | 1991-01-21 | ||
JPH03188875A (en) * | 1989-12-20 | 1991-08-16 | Terumo Corp | Catheter |
JP2528011B2 (en) * | 1989-12-20 | 1996-08-28 | テルモ株式会社 | Catheter |
JPH0428375A (en) * | 1990-05-24 | 1992-01-30 | Nippon Zeon Co Ltd | Medical tube |
JPH0613846U (en) * | 1992-02-26 | 1994-02-22 | 富士システムズ株式会社 | Medical catheter |
WO2003075996A1 (en) * | 2002-02-27 | 2003-09-18 | Kaneka Corporation | Balloon catheter for tentative vaso-occlusion |
US8419671B2 (en) | 2002-12-23 | 2013-04-16 | Novalung Gmbh | Appliance for cannulation of a blood vessel |
JP2008086755A (en) * | 2006-09-01 | 2008-04-17 | Nova Lung Gmbh | Device for introducing cannula into hollow organ |
US8500689B2 (en) | 2006-09-01 | 2013-08-06 | Novalung Gmbh | Device for cannulation of a hollow organ |
JP2020525696A (en) * | 2017-06-30 | 2020-08-27 | サエス・ゲッターズ・エッセ・ピ・ア | Actuator assembly including shape memory alloy wire and coating having particles of phase change material |
Also Published As
Publication number | Publication date |
---|---|
JPH0230266B2 (en) | 1990-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |