JP2009183765A - 複合ガイドワイヤ - Google Patents
複合ガイドワイヤ Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/02—Inorganic materials
- A61L31/022—Metals or alloys
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M2025/09133—Guide wires having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque
- A61M2025/09141—Guide wires having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque made of shape memory alloys which take a particular shape at a certain temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M2025/09175—Guide wires having specific characteristics at the distal tip
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- Biophysics (AREA)
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- Inorganic Chemistry (AREA)
- Surgery (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
【解決手段】 ガイドワイヤであって、基端部分および先端部分を有する心線と、基端領域および先端領域を有するコイルであって、コイルの基端領域は心線の先端部分に連結されており、コイルの先端領域は心線の先端部分を越えて先端方向に延びているコイルと、心線及びコイルの少なくとも一部の周囲に配置されたポリマーシースとを備えており、ポリマーシースは心線の先端部分及びコイルの先端領域を越えて先端方向に延びてチップを形成しているガイドワイヤ。
【選択図】 図19
Description
本願は、米国同時係属出願09/972,276号(2001年10月5日提出)の一部継続出願であり、この同時係出願は参照により本願に組み込まれる。
本発明の分野
本発明は一般に血管内のガイドワイヤに関する。
処理の当業技術により、ワイヤは、ワイヤの応力/歪み曲線で「超弾性の安定域(superelastic plateau)」または「疲労領域(flag region)」を示さないように製造される。むしろ、回復可能な歪みが増大するに伴って、塑性変形が始まるまでは応力は本質的に線形の関係で増加し続ける。いくつかの実施形態においては、線形弾性ニッケルチタン合金はマルテンサイト/オーステナイト相変化を全く示さない合金であり、この相変化はDSC分析及びDMTA分析により広い温度範囲に亘って検出できる。例えば、いくつかの実施形態においては、−60℃〜120℃の範囲でDSC分析及びDMTA分析により検出できるマルテンサイト/オーステナイト相変化は起きない。従ってこのような材料の機械的曲げ特性は、この非常に広い温度範囲に亘る温度の影響に対し一般に不活性である。特定の実施形態では、周囲温度または室温での合金の機械的性質が、体温での機械的性質とほぼ同一である。いくつかの実施形態においては、線形弾性ニッケルチタン合金を先端部分16に使用することにより、蛇行した解剖学的組織の周囲でガイドワイヤは優れた「プッシャビリティ」を示すことができる。
さまざまでよい。ガイドワイヤ10の縦の中心軸を基準として用いると、端区域24/26の末端から測定した場合、テーパー角度は鋭角(即ち、90度未満)であり、例えば5度〜45度の範囲である。テーパー状の端24/26の角度が変化することにより、幾何学の原理に従い重なり接合12の長さも変化する。重なり接合12の長さは、剛性の段階的な移行を拡大(長さを延長)するまたは縮小(長さを短縮)するよう選択されてよい。
商品名INCONEL(登録商標)625で市販されておいる。これは、ステンレス鋼とニッケルチタン合金の双方の溶接に有利である。INCONEL(登録商標)625ワイヤはカリフォルニア州グローバービーチ(Grover Beach)のカリフォルニア
ファイン ワイヤ カンパニー(California Fine Wire Company)から購入でき、その代表的な組成は以下の通りである。
4/16の端24/26は、重なり接合12に対応するために所望の形状(例えば、一様な直径23、球状部分25、らせん27、テーパーなど)を成すよう研削されてもよい。突合せ接合13を用いるのであれば、そのような形状に研削する必要はない。連結チューブ18に対応するため、基端及び先端のガイドワイヤ区域14/16に凹んだ段が研削されてもよい。連結チューブ18を用いない場合には、この凹んだ段を研削する必要はない。
パー状になっていてもよいし、曲線をなすようにテーパー状になっていてもよいし、階段状に先細っていてもよい。このようなテーパー角度は、所望の柔軟性特性に応じて様々でよい。テーパー長は、剛性の段階的な移行を延長(長さを延長)するか、または縮小(長さを短縮)するように選択されてよい。最終的に研削されると、いくつかの実施形態においては、(任意で連結部20を覆う)柔軟なコイルチップ及び/又はポリマーの外被チップ(jacket tip)およびこれらの組み合わせや他のこのような構造、例えば放射線不透過性のマーカ、(コイル状または巻かれていない)安全及び/又は成形リボンなどが、ガイドワイヤ10に配置されてもよい。更に、いくつかの実施形態においては、ガイドワイヤの全体または一部に、コーティング、例えば、滑らかな(例えば、親水性の)又は他のタイプのコーティングが利用されてもよい。ガイドワイヤの異なる区域に別々のコーティングが利用されてもよい。このコーティング及び材料並びにこのコーティングを形成するために使用される方法の例には、米国特許6,139,510号及び5,772,609号などがあり、これらの特許は参照により本願に援用される。
または合金で形成される。このような合金としては、例えば、ステンレス鋼、ニッケルクロム合金、ニッケルクロム鉄合金、コバルト合金、矯正された超弾性または線形弾性の合金(例えば、ニッケルチタン)ワイヤなどのニッケルチタン合金などである。リボン158は任意の好適な取り付け技術を用いて取り付けられ得る。取り付け技術の例としては、はんだ付け、ろう付け、溶接、接着、圧着などがある。いくつかの実施形態においては、リボンまたはワイヤ158は整形構造または安全構造として機能する。
料の充填のレベルは基端区域172よりも高い。いくつかの実施形態においては、独立した放射線不透過性の部材または一連の放射線不透過性部材、例えば、放射線不透過性のコイル、バンド、チューブ、または他のそのような構造を、ガイドワイヤ110に取り付けるか、あるいは、めっき、引抜き、鍛造、またはイオン注入技術により、心線に組み込むことが考えられる。
トル(1インチ)延びていてもよい。
なる形状を有する。更に、先端チップ部分330はワイヤまたはリボン358を備え、図7及び9の実施形態で上述した方法と同様な方法で、取り付け点364で先端部分334の先端360に隣接して取り付けられている。
る。
け点464,465ではんだを用いて取り付けられている。コイル458が心線413と重なるのは約2.794センチメートル(1.1インチ)、心線413より先端方向に延びているのは約1.016センチメートル(0.4インチ)である。心線と重なっているコイル部分のピッチは約0.1016センチメートル(0.04インチ)であり、心線の先端方向に延びているコイル部分のピッチは約0.2032センチメートル(0.08インチ)である。このような実施形態では、コイル458が心線413と約2.794センチメートル(1.1インチ)重なっている部分のガイドワイヤは、めっきされており、例えば、すずめっきされている。スリーブ468は、心線413及びコイル458の周囲に取り付けられたポリウレタンスリーブである。スリーブ468上には親水性のコーティングが施されている。
ワイヤ410が示されており、同じ参照数字は同様な構造を示している。しかし図16の実施形態では、取り付け点464より先端側のコイル458のピッチは取り付け点464より基端側のコイル458のピッチと比べ長い。図16に示す実施形態の他の態様及び構成要素には、図13に関して上述したものと同一の全体的な構造及び材料があってよい。
Claims (21)
- ガイドワイヤであって、
基端部分および先端部分を有する心線と、
基端領域および先端領域を有するコイルと、前記コイルの前記基端領域は前記心線の前記先端部分に連結されており、前記コイルの前記先端領域は前記心線の前記先端部分を越えて先端方向に延びていることと、
前記心線及び前記コイルの少なくとも一部の周囲に配置されたポリマーシースとを備えており、前記ポリマーシースは前記心線の前記先端部分及び前記コイルの前記先端領域を越えて先端方向に延びてチップを形成しているガイドワイヤ。 - 前記コイルが安全構造となるように適合され構成されている請求項1に記載のガイドワイヤ。
- 前記コイルが平角線のコイルである請求項1に記載のガイドワイヤ。
- 前記コイルの前記先端領域が第1の外径を備えており、前記コイルの前記基端領域が前記第1の外径とは異なった第2の外径を備えている請求項1に記載のガイドワイヤ。
- 先端部を有する長尺状のコア部材と、
前記先端部に結合された形状部材であって、前記形状部材は、前記先端部を取り囲むコイル状区域と前記先端部からさらに先端に延びる非コイル状区域とを有する単体ワイヤ又はリボンから形成される、前記形状部材と、
を含む、医療装置。 - 前記形状部材が、ステンレス鋼からなる、請求項5に記載の医療装置。
- 前記形状部材は、ステンレス鋼、ニッケルクロム合金、コバルト合金、及びニッケルチタン合金からなる群から選択された材料を含む、請求項5に記載の医療装置。
- 前記形状部材が、成形可能な材料を含む、請求項5に記載の医療装置。
- 前記形状部材が、前記先端部にはんだ付けされる、請求項5に記載の医療装置。
- 前記コイル状区域と前記非コイル状区域との少なくとも一つが、扁平なリボンを含む、請求項5に記載の医療装置。
- 前記非コイル状区域が、一巻き以上のらせん状にねじられている、請求項5に記載の医療装置。
- 前記非コイル状区域が、前記先端部と同軸である、請求項5に記載の医療装置。
- 前記コア部材は、基端区域と、先端区域と、前記基端区域及び前記先端区域を取り付ける連結器とを含む、請求項5に記載の医療装置。
- 前記連結器は、UNS N06625の金属合金からなる、請求項13に記載の医療装置。
- 基端部分と先端部分とを有する長尺状のコアワイヤと、
前記先端部分に結合された先端部材であって、前記先端部材は、前記先端部分を包囲す
るコイル状区域から、前記先端部分からさらに先端に延びる非コイル状区域に移行する単一構造から作られる、前記先端部材と、
を含む、医療装置。 - 前記先端部材が、リボン形状を含む、請求項15に記載の医療装置。
- 前記先端部材が、ステンレス鋼からなる、請求項15に記載の医療装置。
- 前記先端部材は、ステンレス鋼、ニッケルクロム合金、コバルト合金、及びニッケルチタン合金からなるグループから選択された材料を含む、請求項15に記載の医療装置。
- 前記先端部材が、成形可能な材料を含む、請求項15に記載の医療装置。
- 前記先端部材は、前記先端部分にはんだ付けされる、請求項15に記載の医療装置。
- 前記コイル状区域と非コイル状区域との少なくとも一つが、扁平なリボンを含む、請求項15に記載の医療装置。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/972,276 | 2001-10-05 | ||
US09/972,276 US6918882B2 (en) | 2001-10-05 | 2001-10-05 | Guidewire with stiffness blending connection |
US10/086,992 | 2002-02-28 | ||
US10/086,992 US7074197B2 (en) | 2001-10-05 | 2002-02-28 | Composite guidewire |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003534012A Division JP4494782B2 (ja) | 2001-10-05 | 2002-10-04 | 複合ガイドワイヤ |
Publications (2)
Publication Number | Publication Date |
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JP2009183765A true JP2009183765A (ja) | 2009-08-20 |
JP5254129B2 JP5254129B2 (ja) | 2013-08-07 |
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ID=25519450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2009127759A Expired - Lifetime JP5254129B2 (ja) | 2001-10-05 | 2009-05-27 | 複合ガイドワイヤ |
Country Status (3)
Country | Link |
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US (2) | US6918882B2 (ja) |
JP (1) | JP5254129B2 (ja) |
AU (1) | AU2002334881A1 (ja) |
Cited By (5)
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JP2012005724A (ja) * | 2010-06-25 | 2012-01-12 | Asahi Intecc Co Ltd | 医療用ガイドワイヤ |
JP2012179204A (ja) * | 2011-03-01 | 2012-09-20 | Asahi Intecc Co Ltd | 医療用ガイドワイヤ |
JP2020512034A (ja) * | 2016-11-28 | 2020-04-23 | センサム | インビボで検知するための挿入可能な装置 |
US11202888B2 (en) | 2017-12-03 | 2021-12-21 | Cook Medical Technologies Llc | MRI compatible interventional wireguide |
US12128197B2 (en) | 2023-08-14 | 2024-10-29 | Cook Medical Technologies Llc | MRI compatible interventional wireguide |
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Also Published As
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US20030069521A1 (en) | 2003-04-10 |
US6918882B2 (en) | 2005-07-19 |
JP5254129B2 (ja) | 2013-08-07 |
US20030069520A1 (en) | 2003-04-10 |
AU2002334881A1 (en) | 2003-04-22 |
US7074197B2 (en) | 2006-07-11 |
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