JPH1176415A - Guide wire - Google Patents
Guide wireInfo
- Publication number
- JPH1176415A JPH1176415A JP9245323A JP24532397A JPH1176415A JP H1176415 A JPH1176415 A JP H1176415A JP 9245323 A JP9245323 A JP 9245323A JP 24532397 A JP24532397 A JP 24532397A JP H1176415 A JPH1176415 A JP H1176415A
- Authority
- JP
- Japan
- Prior art keywords
- guide wire
- base end
- tip
- curved
- tube
- 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
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 12
- 239000000057 synthetic resin Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000011162 core material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 239000010931 gold Substances 0.000 abstract description 2
- 229910052697 platinum Inorganic materials 0.000 abstract description 2
- 208000004348 intestinal atresia Diseases 0.000 abstract 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000002601 radiography Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 9
- 238000005452 bending Methods 0.000 description 6
- 208000003243 intestinal obstruction Diseases 0.000 description 6
- 210000001035 gastrointestinal tract Anatomy 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 208000008384 ileus Diseases 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 230000002496 gastric effect Effects 0.000 description 2
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 210000002784 stomach Anatomy 0.000 description 2
- WHNPOQXWAMXPTA-UHFFFAOYSA-N 3-methylbut-2-enamide Chemical compound CC(C)=CC(N)=O WHNPOQXWAMXPTA-UHFFFAOYSA-N 0.000 description 1
- KKJUPNGICOCCDW-UHFFFAOYSA-N 7-N,N-Dimethylamino-1,2,3,4,5-pentathiocyclooctane Chemical compound CN(C)C1CSSSSSC1 KKJUPNGICOCCDW-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 210000004051 gastric juice Anatomy 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はガイドワイヤに関
し、特に腸閉塞を治療する医療技術系等において好適に
用いられるガイドワイヤに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guidewire, and more particularly to a guidewire suitably used in medical technology for treating intestinal obstruction.
【０００２】[0002]
【従来の技術】ガイドワイヤは、カテーテル等のチュー
ブを体腔内の目的部位へ案内するための器具として医療
分野で広く用いられている。従来から、金属製の芯材を
コイルスプリングで被包したものや、金属製の芯材上に
合成樹脂を被覆したガイドワイヤが知られており、これ
らのガイドワイヤには、先端部分が直線状（ストレー
ト）のものや、Ｊ字型の形状をしたもの等がある。近
年、腸閉塞を治療する医療分野において、経口・鼻腔か
ら消化器管へ治療用チューブ（イレウスチューブ）を挿
入し、腸の閉塞部位をバルーンで拡張する技術が開発さ
れているが、この治療用チューブを消化器管へ誘導する
ためにも、これらのガイドワイヤが使用されている。2. Description of the Related Art A guide wire is widely used in the medical field as an instrument for guiding a tube such as a catheter to a target site in a body cavity. Conventionally, there have been known a metal core material wrapped with a coil spring, and a guide wire in which a metal core material is coated with a synthetic resin. (Straight) and J-shaped. In recent years, in the medical field for treating intestinal obstruction, a technique has been developed in which a therapeutic tube (ileus tube) is inserted from the oral / nasal cavity into the digestive tract and the intestinal obstruction site is expanded with a balloon. These guidewires are also used to guide the gastrointestinal tract to the digestive tract.
【０００３】[0003]
【発明が解決しようとする課題】従来から用いられてい
るストレート若しくはＪ字型の形状のガイドワイヤを使
用すると、消化器管内でチューブがループを形成した
際、チューブ側壁に形成された胃液等の吸引用側孔から
ガイドワイヤの先端が飛び出し、ガイドワイヤを進める
ことが困難になり、その後のチューブの誘導ができなく
なる場合があった。図５は、従来の先端がストレートの
ガイドワイヤ５０において、例えば胃６０の中でループ
状に湾曲した治療用チューブ１００の側孔１０１から先
端が飛び出した様子を示すものである。図５に示すよう
に、ストレート形状のガイドワイヤ５０の先端は治療用
チューブ１００の内壁のループ外側に沿って進むため、
側孔１０１がループ外側に存在した際、側孔１０１には
まりやすい。When a conventionally used straight or J-shaped guide wire is used, when a tube forms a loop in the digestive tract, gastric fluid or the like formed on the side wall of the tube is formed. The distal end of the guide wire protrudes from the suction side hole, making it difficult to advance the guide wire, and in some cases, guiding the tube thereafter becomes impossible. FIG. 5 shows a state in which the tip of a conventional guide wire 50 having a straight tip protrudes from the side hole 101 of the treatment tube 100 which is curved in a loop in the stomach 60, for example. As shown in FIG. 5, the distal end of the straight guide wire 50 travels along the outside of the loop of the inner wall of the treatment tube 100,
When the side hole 101 exists outside the loop, it easily fits in the side hole 101.
【０００４】また、比較的強固なコイルスプリングタイ
プのガイドワイヤを使用する場合、チューブ内での操作
性を良くするために、ガイドワイヤ表面にオリーブ油を
塗布し滑性を得ることがあるが、消化器管内でチューブ
がループを形成すると上記ワイヤと同様にチューブの吸
引側孔からガイドワイヤの先端が飛び出したり、チュー
ブからガイドワイヤが抜けにくくなったり、再挿入が出
来にくくなる等、医療行為が著しく制約されていた。When a relatively strong coil spring type guide wire is used, olive oil may be applied to the surface of the guide wire in order to improve the operability in the tube. If the tube forms a loop in the organ tube, the medical action is remarkable, such as the tip of the guide wire protruding from the suction side hole of the tube, the guide wire becoming difficult to pull out of the tube, and being difficult to reinsert like the above wire. Was constrained.
【０００５】本発明は、腸閉塞の治療を行う医療行為に
おいて、ガイドワイヤの先端が治療用チューブの側孔に
入りにくい構造のガイドワイヤを提供することを目的と
する。[0005] It is an object of the present invention to provide a guidewire having a structure in which the distal end of the guidewire hardly enters a side hole of a treatment tube in medical treatment for treating intestinal obstruction.
【０００６】[0006]
【課題を解決するための手段】このような目的は、下記
（１）〜（６）の発明により達成される。This and other objects are attained by the following inventions (1) to (6).
【０００７】（１）略直線形状の基端部と、略直線形状
の先端部とを有し、該基端部と先端部の間に、多湾曲形
状に予備形成された中間部を有することを特徴とするガ
イドワイヤ。(1) It has a substantially linear base end and a substantially straight distal end, and has an intermediate portion preformed in a multi-curved shape between the base end and the distal end. A guide wire.
【０００８】（２）前記先端部と前記中間部との移行部
が前記直線状の基端部の軸の延長上またはその近傍に存
在することを特徴とする（１）記載のガイドワイヤ。(2) The guide wire according to (1), wherein a transition portion between the distal end portion and the intermediate portion exists on or near an extension of an axis of the linear base end portion.
【０００９】（３）前記先端部が前記直線状の基端部と
略平行で、かつ該基端部の軸の延長上またはその近傍に
存在することを特徴とする（２）記載のガイドワイヤ。(3) The guide wire according to (2), wherein the distal end is substantially parallel to the linear base end, and exists on or near the extension of the axis of the base end. .
【００１０】（４）前記中間部が少なくとも３段階の湾
曲部を有する多湾曲形状であることを特徴とする（１）
乃至（３）記載のガイドワイヤ。(4) The intermediate portion has a multi-curved shape having at least three curved portions (1).
The guidewire according to any one of (1) to (3).
【００１１】（５）金属からなる芯材と、該芯材を被覆
してなる合成樹脂層からなることを特徴とする（１）乃
至（４）記載のガイドワイヤ。(5) The guide wire according to any one of (1) to (4), comprising a core made of metal and a synthetic resin layer covering the core.
【００１２】（６）前記合成樹脂層の表面に親水性の潤
滑層を有することを特徴とする（５）記載のガイドワイ
ヤ。(6) The guide wire according to (5), further comprising a hydrophilic lubricating layer on the surface of the synthetic resin layer.
【００１３】[0013]
【発明の実施の形態】以下、本発明のガイドワイヤにつ
いて、添付図面に示す好適実施例を参照しつつ、詳細に
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a guide wire according to the present invention will be described in detail with reference to the preferred embodiments shown in the accompanying drawings.
【００１４】図１は、本発明の実施例のガイドワイヤの
先端部を示す断面図である。図１において、ガイドワイ
ヤ１１は、直線状の基端部４から第１湾曲部１と、第２
湾曲部２と、第３湾曲部３を有する中間部５を介し、先
端部６へと続いている。第１湾曲部１と第３湾曲部３は
同一方向に曲率半径が存在し、第２湾曲部２はこれらと
異なる方向に曲率半径が存在する。これにより、先端部
６は、基端部５の軸の延長線７上に存在することとな
る。FIG. 1 is a sectional view showing a distal end portion of a guide wire according to an embodiment of the present invention. In FIG. 1, a guide wire 11 extends from a linear base end 4 to a first curved portion 1 and a second curved portion 1.
It continues to the tip part 6 via the bending part 2 and the intermediate part 5 having the third bending part 3. The first curved portion 1 and the third curved portion 3 have a radius of curvature in the same direction, and the second curved portion 2 has a radius of curvature in a direction different from these. Thus, the distal end portion 6 is present on the extension line 7 of the axis of the base end portion 5.
【００１５】ガイドワイヤ１１は、中間部５および先端
部６がテーパ上に細径化された金属製の芯金８に合成樹
脂層９を被覆してなる。芯金８に好適に用いられる金属
材料としては、Ｎｉ−Ｔｉ合金等の超弾性合金や、ステ
ンレス合金等が挙げられる。合成樹脂層９に好適に用い
られる樹脂材料としては、ポリウレタン、ＰＴＦＥ（ポ
リテトラフルオロエチレン）等のフッ素系樹脂、ナイロ
ン等のポリアミド系樹脂、ポリエチレン、ポリプロピレ
ン、ポリオレフィン等が挙げられる。これらの樹脂には
酸化バリウムやタングステン等のＸ線造影性微粉末を混
入することができる。また、芯金８の先端部にはＸ線造
影用のプラチナ、金等のコイル１０が巻かれ、これらに
よりＸ線透視下で作業を行うことが可能となる。合成樹
脂層９の表面には更に、無水マレイン酸等からなる親水
性の潤滑性被膜をコーティングしてなることが望まし
い。これにより、治療用チューブ内や、体腔内での挿通
抵抗が薄れ、スムーズな挿入が可能となる。潤滑性被膜
は体腔内に挿入されない部分にはコーティングされない
のが望ましい。The guide wire 11 is formed by covering a metal cored bar 8 having a tapered tapered intermediate portion 5 and a distal end portion 6 with a synthetic resin layer 9. Examples of the metal material suitably used for the cored bar 8 include a superelastic alloy such as a Ni-Ti alloy, a stainless steel alloy, and the like. Examples of the resin material suitably used for the synthetic resin layer 9 include polyurethane, fluorine-based resin such as PTFE (polytetrafluoroethylene), polyamide-based resin such as nylon, polyethylene, polypropylene, and polyolefin. X-ray contrast fine powder such as barium oxide and tungsten can be mixed in these resins. A coil 10 made of platinum, gold, or the like for X-ray imaging is wound around the tip of the cored bar 8, so that the work can be performed under X-ray fluoroscopy. It is desirable that the surface of the synthetic resin layer 9 is further coated with a hydrophilic lubricating film made of maleic anhydride or the like. As a result, the insertion resistance in the treatment tube or the body cavity is reduced, and smooth insertion becomes possible. Desirably, the lubricating coating is not coated on portions that are not inserted into the body cavity.
【００１６】このようなガイドワイヤ１１の外径は特に
限定されないが、通常、０．６〜１．７ｍｍ程度である
のが好ましく、０．９〜１．３ｍｍ程度であるのがより
好ましい。また、合成樹脂層９の厚さは、基端部４付近
で０．０５〜０．１５ｍｍ程度、先端部６付近で０．１
５〜０．３ｍｍ程度であるのが望ましい。更に、ガイド
ワイヤ１１の全長は、１００〜４５０ｃｍ程度、好まし
くは２６０〜３５０ｃｍ程度である。The outer diameter of such a guide wire 11 is not particularly limited, but is generally preferably about 0.6 to 1.7 mm, more preferably about 0.9 to 1.3 mm. The thickness of the synthetic resin layer 9 is about 0.05 to 0.15 mm in the vicinity of the base end 4 and 0.1 in the vicinity of the tip 6.
It is desirable to be about 5 to 0.3 mm. Further, the total length of the guide wire 11 is about 100 to 450 cm, preferably about 260 to 350 cm.
【００１７】次に、図２を用いて、本発明のガイドワイ
ヤ１１における多湾曲形状等の好適なスペックについて
説明する。Next, preferred specifications of the guide wire 11 of the present invention, such as a multi-curved shape, will be described with reference to FIG.
【００１８】図２において、Ｈは中間部５の高さであ
り、言い換えれば、軸の延長線７と中間部５との最大離
間距離である。Ｈの値は、治療用チューブの内径よりや
や大きい程度が望ましく、具体的には３〜１５ｍｍであ
るのが好ましく、更には６〜１０ｍｍが好ましい。In FIG. 2, H is the height of the intermediate portion 5, in other words, the maximum distance between the extension line 7 of the shaft and the intermediate portion 5. The value of H is desirably slightly larger than the inner diameter of the treatment tube, specifically, preferably 3 to 15 mm, and more preferably 6 to 10 mm.
【００１９】Ｌ１は、先端部６の長さを示すものであ
る。Ｌ１としては、ガイドワイヤ１１の進路選択性を考
慮して、３〜１５ｍｍが好ましく、更には５〜８ｍｍが
好ましい。L1 indicates the length of the tip portion 6. L1 is preferably 3 to 15 mm, and more preferably 5 to 8 mm, in consideration of the path selectivity of the guide wire 11.
【００２０】Ｌ２は中間部５のガイドワイヤ軸方向長さ
を示すものである。Ｌ２としては、Ｈの値とのバランス
により先端部６に基端からの力が伝達するよう考慮し
て、１０〜４０ｍｍが好ましく、更には１５〜２５ｍｍ
が好ましい。L2 indicates the length of the intermediate portion 5 in the guide wire axial direction. L2 is preferably 10 to 40 mm, more preferably 15 to 25 mm, in consideration of transmitting the force from the proximal end to the distal end portion 6 in balance with the value of H.
Is preferred.
【００２１】本発明のガイドワイヤ１１の多湾曲形状を
予備成型する方法としては、芯金の段階で、型内に固定
した後、焼き鈍しすれば良く、４００〜６００度で５分
〜２時間程度焼き鈍しするのが好ましい。As a method of preforming the multi-curved shape of the guide wire 11 of the present invention, it is only necessary to fix the inside of the mold at the stage of the core metal and then to anneal the material, at 400 to 600 degrees for about 5 minutes to 2 hours. Annealing is preferred.
【００２２】図３および図４は、本発明のガイドワイヤ
１１を、治療用チューブ１００内へ挿入した様子を示す
図である。図３において、胃６０の中に挿通した腸閉塞
の治療用チューブ（イレウスチューブ）１００は、図に
示すようなループ状の湾曲状態を示す。治療用チューブ
１００には、胃液等の吸引の為の側孔１０１が設けられ
ている。図４は、図３におけるガイドワイヤ先端部６お
よび中間部５の作用を説明するためのものである。FIGS. 3 and 4 are views showing a state where the guide wire 11 of the present invention is inserted into the treatment tube 100. FIG. In FIG. 3, the tube (ileus tube) 100 for treatment of intestinal obstruction inserted into the stomach 60 shows a looped curved state as shown in the figure. The treatment tube 100 is provided with a side hole 101 for sucking gastric juice and the like. FIG. 4 is a view for explaining the operation of the guide wire distal end portion 6 and the intermediate portion 5 in FIG.
【００２３】本発明のガイドワイヤ１１は、中間部５の
高さＨが治療用チューブ１００の内径よりやや大きいた
め、図４に示すように治療用チューブ１００の管壁によ
り湾曲が押し広げられた状態となる。ガイドワイヤ１１
の先端部６は、基端部４と略平行になるように予備成型
されているが、このように湾曲が押し広げられた状態と
なることにより、先端部６は治療用チューブ１００の管
壁から管中心部へ向かう角度となり、ガイドワイヤ１１
の最先端１２は、管壁に接触しない状態を保ちながら前
進する。従って、管路上に側孔１０１が存在した場合で
あっても、最先端１２が側孔１０１から飛び出すことは
ない。In the guide wire 11 of the present invention, since the height H of the intermediate portion 5 is slightly larger than the inner diameter of the treatment tube 100, the curvature is expanded by the tube wall of the treatment tube 100 as shown in FIG. State. Guide wire 11
The distal end portion 6 is preformed so as to be substantially parallel to the base end portion 4, but the distal end portion 6 becomes the tube wall of the treatment tube 100 due to the state in which the curvature is expanded as described above. From the tube to the center of the tube, and the guide wire 11
The forward end 12 moves forward without contacting the tube wall. Therefore, even when the side hole 101 exists on the pipeline, the front end 12 does not jump out of the side hole 101.
【００２４】また、本発明のガイドワイヤ１１は合成樹
脂被覆層と、表面に親水性潤滑膜を有するため、中間部
５の頂点や、中間部５と先端部６との移行部が治療用チ
ューブ１００の管壁に接触しながら移動しても、摩擦抵
抗がほとんどなく、スムーズに進行することができる。Further, since the guide wire 11 of the present invention has a synthetic resin coating layer and a hydrophilic lubricating film on the surface, the apex of the intermediate portion 5 and the transition portion between the intermediate portion 5 and the distal end portion 6 have a treatment tube. Even if it moves while contacting the wall of the tube 100, it can proceed smoothly with almost no frictional resistance.
【００２５】本発明のガイドワイヤは、前記特性を有す
るものであれば、その具体的な構造は特に限定されず、
適用されるチューブ（カテーテル）も特に腸閉塞治療用
に限定されず、ＰＴＣＡ用拡張カテーテル、ガイディン
グカテーテル、血管造影カテーテル等の血管カテーテル
や、イントロデューサのシース、外套針、胃管カテーテ
ル、気管内チューブ、内視鏡チューブ、超音波カテーテ
ル、尿管カテーテル等の、人体に使用される各種カテー
テル類が挙げられる。The specific structure of the guide wire of the present invention is not particularly limited as long as it has the above characteristics.
The tube (catheter) to be applied is not particularly limited to the treatment of intestinal obstruction, and a vascular catheter such as a PTCA dilatation catheter, a guiding catheter, an angiography catheter, an introducer sheath, a trocar, a gastric tube catheter, and an endotracheal tube. And various catheters used for the human body, such as an endoscope tube, an ultrasonic catheter, and a ureteral catheter.
【００２６】[0026]
【実施例】以下、本発明の具体的実施例について詳細に
説明する。図１、図２に示す構造のガイドワイヤを製造
した。このガイドワイヤの各条件は次の通りである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail. A guide wire having the structure shown in FIGS. 1 and 2 was manufactured. The conditions of this guide wire are as follows.
【００２７】ガイドワイヤの全長：３５０ｃｍ 芯金の構成材料：Ｎｉ−Ｔｉ製超弾性合金 ガイドワイヤの外径：０．９７ｍｍ 合成樹脂層の構成材料：ポリウレタン 親水性潤滑膜コーティングの構成材料：ジメチルアクリ
ルアミドとグリシジルメタクリレートのブロック重合体 中間部５の高さＨ：８ｍｍ 先端部６の長さＬ１：７ｍｍ 中間部５の軸方向長さＬ２：２０ｍｍ 第２湾曲部２の湾曲度：半径１５ｍｍの円周相当 以上の通り得られたガイドワイヤをループ状に湾曲させ
たイレウスチューブ内に挿入したところ、先端は側孔に
引っかかることなく前進した。Overall length of guide wire: 350 cm Material of core metal: Ni-Ti superelastic alloy Outer diameter of guide wire: 0.97 mm Material of synthetic resin layer: Polyurethane Material of hydrophilic lubricating film coating: Dimethyl acrylamide And a block polymer of glycidyl methacrylate Height H of the middle part 5: 8 mm Length L 1 of the tip part 6: 7 mm Length L2 in the axial direction of the middle part 5: 20 mm Curvature of the second bending part 2: circumference of radius 15 mm When the guide wire obtained as described above was inserted into an ileus tube curved in a loop shape, the distal end advanced without being caught in the side hole.
【００２８】[0028]
【発明の効果】以上述べたように、本発明のガイドワイ
ヤによれば、治療用チューブ内で吸引側孔から飛び出し
がなく、挿入性および消化器管選択の操作性に優れ、術
者や患者の負担を軽減することが可能となる。As described above, according to the guide wire of the present invention, the guide wire does not protrude from the suction side hole in the treatment tube, and is excellent in insertability and operability for gastrointestinal tract selection. Can be reduced.
【図１】本発明のガイドワイヤの実施例を示す断面図で
ある。FIG. 1 is a sectional view showing an embodiment of a guide wire according to the present invention.
【図２】本発明のガイドワイヤのスペックを説明するた
めの図である。FIG. 2 is a diagram for explaining specifications of a guide wire according to the present invention.
【図３】本発明のガイドワイヤの使用状態を説明する図
である。FIG. 3 is a diagram illustrating a use state of a guide wire according to the present invention.
【図４】本発明のガイドワイヤの作用を説明する図であ
る。FIG. 4 is a diagram illustrating the operation of the guide wire according to the present invention.
【図５】従来のガイドワイヤの使用状態を説明する図で
ある。FIG. 5 is a diagram illustrating a use state of a conventional guide wire.
１ 第１湾曲部 ２ 第２湾曲部 ３ 第３湾曲部 ４ 基端部 ５ 中間部 ６ 先端部 ７ 軸の延長線 ８ 芯金 ９ 合成樹脂層 １０ コイル １１ ガイドワイヤ DESCRIPTION OF SYMBOLS 1 1st bending part 2 2nd bending part 3 3rd bending part 4 Base end part 5 Middle part 6 Front end part 7 Axis extension line 8 Core metal 9 Synthetic resin layer 10 Coil 11 Guide wire
Claims (5)
端部とを有し、該基端部と先端部の間に、多湾曲形状に
予備形成された中間部を有することを特徴とするガイド
ワイヤ。1. A method according to claim 1, further comprising a substantially linear base end and a substantially straight distal end, and a multi-curved preformed intermediate portion between the base end and the distal end. Guidewire to feature.
前記直線状の基端部の軸の延長上またはその近傍に存在
することを特徴とする請求項１記載のガイドワイヤ。2. A transition portion between the tip portion and the intermediate portion,
The guidewire according to claim 1, wherein the guidewire exists on or near an extension of an axis of the linear base end.
行で、かつ該基端部の軸の延長上またはその近傍に存在
することを特徴とする請求項２記載のガイドワイヤ。3. The guidewire according to claim 2, wherein the distal end portion is substantially parallel to the linear base end portion and exists on or near an extension of an axis of the base end portion.
を有する多湾曲形状であることを特徴とする請求項１乃
至３記載のガイドワイヤ。4. The guidewire according to claim 1, wherein the intermediate portion has a multi-curved shape having at least three stages of curved portions.
なる合成樹脂層からなることを特徴とする請求項１乃至
４記載のガイドワイヤ。5. The guide wire according to claim 1, wherein the guide wire comprises a metal core material and a synthetic resin layer covering the metal core material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24532397A JP4198214B2 (en) | 1997-09-10 | 1997-09-10 | Guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24532397A JP4198214B2 (en) | 1997-09-10 | 1997-09-10 | Guide wire |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006198319A Division JP2006312074A (en) | 2006-07-20 | 2006-07-20 | Guide wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1176415A true JPH1176415A (en) | 1999-03-23 |
| JP4198214B2 JP4198214B2 (en) | 2008-12-17 |
Family
ID=17131961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24532397A Expired - Lifetime JP4198214B2 (en) | 1997-09-10 | 1997-09-10 | Guide wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4198214B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007105531A1 (en) | 2006-03-06 | 2007-09-20 | Terumo Kabushiki Kaisha | Guide wire |
| JP2013000499A (en) * | 2011-06-21 | 2013-01-07 | Asahi Intecc Co Ltd | Guide wire |
| US8517959B2 (en) | 2009-04-14 | 2013-08-27 | Terumo Kabushiki Kaisha | Guide wire for medical treatment |
| EP2740513A1 (en) | 2012-12-06 | 2014-06-11 | Asahi Intecc Co., Ltd. | Guidewire |
| CN107802321A (en) * | 2017-11-30 | 2018-03-16 | 谢长远 | Therapies for ileus device |
-
1997
- 1997-09-10 JP JP24532397A patent/JP4198214B2/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007105531A1 (en) | 2006-03-06 | 2007-09-20 | Terumo Kabushiki Kaisha | Guide wire |
| EP1992383A4 (en) * | 2006-03-06 | 2009-04-08 | Terumo Corp | GUIDE WIRE |
| JP2012091070A (en) * | 2006-03-06 | 2012-05-17 | Terumo Corp | Guide wire |
| JP5028406B2 (en) * | 2006-03-06 | 2012-09-19 | テルモ株式会社 | Guide wire |
| US8353849B2 (en) | 2006-03-06 | 2013-01-15 | Terumo Kabushiki Kaisha | Guide wire |
| US8708932B2 (en) | 2006-03-06 | 2014-04-29 | Terumo Kabushiki Kaisha | Guide wire |
| US8517959B2 (en) | 2009-04-14 | 2013-08-27 | Terumo Kabushiki Kaisha | Guide wire for medical treatment |
| JP2013000499A (en) * | 2011-06-21 | 2013-01-07 | Asahi Intecc Co Ltd | Guide wire |
| EP2740513A1 (en) | 2012-12-06 | 2014-06-11 | Asahi Intecc Co., Ltd. | Guidewire |
| JP2014113177A (en) * | 2012-12-06 | 2014-06-26 | Asahi Intecc Co Ltd | Guide wire |
| CN107802321A (en) * | 2017-11-30 | 2018-03-16 | 谢长远 | Therapies for ileus device |
| CN107802321B (en) * | 2017-11-30 | 2023-09-15 | 谢长远 | Ileus treatment device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4198214B2 (en) | 2008-12-17 |
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