JP2008125628A - Medical guide wire - Google Patents

Medical guide wire Download PDF

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Publication number
JP2008125628A
JP2008125628A JP2006311860A JP2006311860A JP2008125628A JP 2008125628 A JP2008125628 A JP 2008125628A JP 2006311860 A JP2006311860 A JP 2006311860A JP 2006311860 A JP2006311860 A JP 2006311860A JP 2008125628 A JP2008125628 A JP 2008125628A
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distal end
wire
guide wire
blood vessel
end side
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JP5030546B2 (en
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Minoru Shimizu
稔 清水
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Medikit Co Ltd
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Medikit Co Ltd
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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
    • 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
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0041—Catheters; Hollow probes characterised by the form of the tubing pre-formed, e.g. specially adapted to fit with the anatomy of body channels

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide wire capable of preventing the guide wire from straying into a branched blood vessel from a mainstream blood vessel. <P>SOLUTION: The medical guide wire has a bending part 5 on the distal end side. The distal end side of a wire body 3 is bent so that the distal end of the wire body 3 is returned to the proximal end side of the wire body 3, and the vicinity of the distal end solid-crosses the wire body at an acute angle as seen from the top. The medical guide wire with the bending part 5 on the distal end side has the bending part 5, which projects in one direction of a first plane P1 parallel to the shaft center of the wire body 3 and which is bent in such a way that the distal end side gradually separates from a second plane P2 orthogonally crossing the first plane P1 and parallel to the shaft center. The linear distal end 7 which solid-crosses the wire body 3 at an acute angle is disposed on the distal end side of the bending part 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、血管内治療に使用される医療用ガイドワイヤーに係り、さらに詳細には、ガイドワイヤーの先端側に螺旋状に湾曲した立体形状の湾曲部を備えている医療用ガイドワイヤーに関する。   The present invention relates to a medical guide wire used for endovascular treatment, and more particularly to a medical guide wire provided with a three-dimensional curved portion that is spirally curved on the distal end side of the guide wire.

血管内治療に使用されるガイドワイヤーの先端部を湾曲したものとして、先端をアングル型又はＪ字型に湾曲したものが知られている。上記Ｊ字型においては分岐血管への挿入が困難であり、アングル型においては分岐血管に蛇行し易いという問題がある。そこで、前記Ｊ字型，アングル型の欠点を改善すべくガイドワイヤーの先端部をＪ字型に湾曲した状態において、Ｊ字型湾曲部の基部側を前記Ｊ字型の湾曲方向と同方向へ屈曲した構成のガイドワイヤーが提案されている（例えば、特許文献１参照）。
特開２００６−２５９０７号公報 As a guide wire used for endovascular treatment, the tip of the guide wire is curved, and the tip of the guide wire is bent into an angle shape or a J shape. The J-shaped type is difficult to insert into a branch vessel, and the angle type has a problem that it is easy to meander into the branch vessel. Therefore, in a state where the distal end portion of the guide wire is bent into a J shape in order to improve the disadvantages of the J shape and the angle type, the base side of the J shape bending portion is set in the same direction as the J shape bending direction. A bent guide wire has been proposed (see, for example, Patent Document 1).
JP 2006-25907 A

前記特許文献１に記載のガイドワイヤーの構成においては、Ｊ字型に湾曲したガイドワイヤーの先端部を、上記Ｊ字型湾曲部の基部をＪ字型湾曲部の湾曲方向と同方向に屈曲した構成であり、ガイドワイヤーの先端側は同一平面内において湾曲されているものである。そして、ガイドワイヤーを進めるべき本筋の血管から分岐した血管内へガイドワイヤーの進行方向の先端部が入り込んだことを知らずにガイドワイヤーを押し進めると、ガイドワイヤーが本筋の血管から分岐血管内へ進んでしまうという問題がある。   In the configuration of the guide wire described in Patent Document 1, the distal end portion of the J-shaped curved guide wire is bent at the base of the J-shaped curved portion in the same direction as the bending direction of the J-shaped curved portion. It is a structure and the front end side of a guide wire is curved in the same plane. When the guide wire is pushed forward without knowing that the distal end of the guide wire has entered the blood vessel branched from the main muscle blood vessel to which the guide wire should be advanced, the guide wire advances from the main blood vessel into the branch blood vessel. There is a problem of end.

本発明は前述のごとき問題に鑑みてなされたもので、先端側に湾曲部を備えた医療用ガイドワイヤーであって、ワイヤー本体の先端側は、ワイヤー本体の先端部が当該ワイヤー本体の基部側へ戻るように湾曲してあり、かつ上記先端部付近は、平面視したときワイヤー本体と鋭角度でもって立体交差してあることを特徴とするものである。   The present invention has been made in view of the above-described problems, and is a medical guide wire provided with a curved portion on the distal end side, and the distal end side of the wire body is the proximal side of the wire body. Further, the vicinity of the tip portion is three-dimensionally intersected with the wire body at an acute angle when seen in a plan view.

また、先端側に湾曲部を備えた医療用ガイドワイヤーであって、ワイヤー本体の先端部に、ワイヤー本体の軸心に平行な第１平面の一側方向に突出し、かつ前記第１平面に対して直交すると共に前記軸心に平行な第２平面から先端側が次第に離反するように湾曲した螺旋状の湾曲部を備え、この湾曲部の先端側に前記ワイヤー本体に鋭角度でもって立体交差した直線状先端部を備えていることを特徴とするものである。   Further, the medical guide wire has a curved portion on the distal end side, and protrudes in one side direction of a first plane parallel to the axis of the wire body at the distal end portion of the wire body, and with respect to the first plane. A straight curved line that intersects at an acute angle with the wire body on the distal end side of the curved portion, the curved curved portion being curved so that the distal end side is gradually separated from a second plane parallel to the axis. It has the shape-like front-end | tip part, It is characterized by the above-mentioned.

また、前記医療用ガイドワイヤーにおいて、前記螺旋状の湾曲部の円弧状の部分の範囲は２００°〜２３５°であることを特徴とするものである。   In the medical guide wire, the arcuate portion of the spiral curved portion has a range of 200 ° to 235 °.

また、前記医療用ガイドワイヤーにおいて、前記直線状先端部が前記ワイヤー本体の押進方向に指向するように前記螺旋状の湾曲部を引き伸ばしたとき、前記ワイヤー本体と前記直線状先端部との間に、ほぼ一周のねじれ部を備える構成であることを特徴とするものである。   Further, in the medical guide wire, when the spiral curved portion is stretched so that the linear distal end portion is directed in the pushing direction of the wire main body, the wire guide body is disposed between the wire distal end portion and the linear distal end portion. Further, it is characterized in that it has a structure having a twist portion of substantially one round.

本発明によれば、ガイドワイヤーの先端部がガイドワイヤーの進行方向を指向するように伸ばした状態において本筋の血管内を進行中に、本筋の血管から分岐した血管の入口に前記先端部が僅かに入り込んだ状態において、ガイドワイヤーをさらに押し進めると、ガイドワイヤーの先端側が元の湾曲状態に復帰されて、湾曲部における進行方向の先端が本筋の血管内に位置し、前記先端部が本筋の血管内に戻るので、分岐した血管内へガイドワイヤーが進入することを防止することができる。すなわち、本筋の血管から分岐した血管への迷い込みが防止されるものである。   According to the present invention, while the distal end portion of the guide wire is stretched so as to be directed in the direction of travel of the guide wire, the distal end portion is slightly at the entrance of the blood vessel branched from the main muscle blood vessel while traveling in the main muscle blood vessel. When the guide wire is further pushed in the state of entering, the distal end side of the guide wire is restored to the original curved state, the distal end of the bending portion in the advancing direction is located in the blood vessel of the main muscle, and the distal portion is the blood vessel of the main muscle. Since it returns to the inside, it is possible to prevent the guide wire from entering the branched blood vessel. That is, the stray from the main muscle blood vessel to the branched blood vessel is prevented.

図１（Ａ），（Ｂ）を参照するに、本発明の実施形態に係る医療用のガイドワイヤー１は、従来のガイドワイヤーと同様に金属製の芯線の表面を樹脂によって被覆してあり、かつ樹脂の表面には親水性処理が施してある。上記ガイドワイヤー１は、直線状のワイヤー本体３の先端側に湾曲部５を備えている。   Referring to FIGS. 1 (A) and 1 (B), the medical guide wire 1 according to the embodiment of the present invention has the surface of a metal core wire covered with a resin like a conventional guide wire, In addition, the surface of the resin is subjected to a hydrophilic treatment. The guide wire 1 includes a curved portion 5 on the distal end side of a linear wire body 3.

より詳細には、前記湾曲部５は、前記ワイヤー本体３の軸心と平行な第１平面Ｐ１（図１（Ａ）には線で表わされている）の一側方向（図１（Ａ）においての上方向）に突出してある。さらに、前記湾曲部５は、前記ワイヤー本体３の軸心と平行で前記第１平面Ｐ１に直交した第２平面Ｐ２（（Ｂ）には線で表わされている）に前記ワイヤー本体３が接触した状態にあるものと仮定すると、前記湾曲部５は、前記第２平面Ｐ２から次第に離れるように（図１（Ｂ）においては次第に上昇するように）螺旋状に湾曲してある。   More specifically, the bending portion 5 is in one side direction (FIG. 1 (A)) of a first plane P1 (represented by a line in FIG. 1 (A)) parallel to the axis of the wire body 3. ) In the upward direction). Further, the bending portion 5 is configured so that the wire main body 3 is on a second plane P2 (represented by a line in (B)) parallel to the axis of the wire main body 3 and orthogonal to the first plane P1. Assuming that they are in contact with each other, the bending portion 5 is spirally curved so as to gradually move away from the second plane P2 (so as to gradually rise in FIG. 1B).

したがって、前記湾曲部５は、平面視したときには、図１（Ａ）に示すように、ワイヤー本体３の直線状部分３Ａと湾曲部５の接線とがほぼ一致するように接続した構成である。そして、前記湾曲部５の先端側には、前記ワイヤー本体３の前記直線状部分３Ａと鋭角度でもって立体交差した直線状先端部７を備えている。前記湾曲部５と前記直線状先端部７は、前記湾曲部５の接線と前記直線状先端部７とがほぼ一致するように接続した構成である。なお、上記直線状先端部７は、必ずしも直線である必要はなく、多少湾曲していてもよいものである。   Therefore, when the planar view is seen, the said bending part 5 is the structure connected so that the linear part 3A of the wire main body 3 and the tangent of the bending part 5 may correspond substantially, as shown to FIG. 1 (A). Further, on the distal end side of the bending portion 5, a linear distal end portion 7 that is three-dimensionally intersected with the linear portion 3 </ b> A of the wire body 3 at an acute angle is provided. The bending portion 5 and the linear tip portion 7 are connected so that the tangent line of the bending portion 5 and the linear tip portion 7 substantially coincide with each other. In addition, the said linear front-end | tip part 7 does not necessarily need to be a straight line, and may be curving somewhat.

そして、前記直線状先端部７における先端９は、平面視したとき、図１（Ａ）に示すように、前記第１平面Ｐ１に対して前記湾曲部５の突出方向とは逆に、すなわち第１平面Ｐ１の他側方向（図１（Ａ）において下方向）に突出してある。また、前記直線状先端部７の先端９は、図１（Ｂ）に示すように、前記第２平面Ｐ２から最も離れた位置にある。前記湾曲部５において、図１（Ａ）に示すように、平面視したときの円弧状部の部分は、ワイヤー本体３の直線状部分３Ａに対して直線状先端部７が鋭角度でもって立体交差するように、約２００°〜２３５°の範囲に亘って設けてある。なお、前記湾曲部５は、平面視したときに円弧状に表わさせるのが望ましいが、必ずしも円弧状に限ることなく、例えば楕円形状など適宜の曲線で表わされることが望ましいものである。   Then, when viewed from above, the tip 9 of the linear tip 7 is opposite to the protruding direction of the curved portion 5 with respect to the first plane P1, as shown in FIG. One plane P1 projects in the other direction (downward in FIG. 1A). Further, the tip 9 of the linear tip 7 is located farthest from the second plane P2 as shown in FIG. As shown in FIG. 1 (A), the arcuate portion of the curved portion 5 when viewed from above is a three-dimensional shape with a straight tip 7 having an acute angle with respect to the straight portion 3A of the wire body 3. It is provided over a range of about 200 ° to 235 ° so as to intersect. The curved portion 5 is desirably expressed in an arc shape when viewed in plan, but is not necessarily limited to an arc shape, and is preferably expressed by an appropriate curve such as an elliptical shape.

以上のごとき構成において、前記ガイドワイヤー１を血管内に挿入して押し進める場合には、図２に示すように引き伸ばすものである。図２は、対象とする血管の太さにほぼ等しい透明な樹脂製のパイプ１１内に挿入した状態で示してある。   In the above configuration, when the guide wire 1 is inserted into a blood vessel and pushed forward, the guide wire 1 is stretched as shown in FIG. FIG. 2 shows a state in which it is inserted into a transparent resin pipe 11 that is substantially equal to the thickness of the target blood vessel.

図２（Ｂ）より明らかなように、前記直線状先端部７における先端９が前記ワイヤー本体３の押進方向（図２（Ｂ）において左方向）を指向するように、螺旋状の前記湾曲部５を弾性変形させて引き伸ばすと、上記湾曲部５はパイプ１１の内面によって元の状態に戻ることを規制された状態にあって、前記湾曲部５に相当する長さの部分Ｌの範囲において、前記湾曲部５はねじれ部５Ａを構成する。このねじれ部５Ａはピッチの大きなコイル状を呈するものである。   As apparent from FIG. 2B, the spiral curve is formed so that the tip 9 of the linear tip 7 is directed in the pushing direction of the wire body 3 (leftward in FIG. 2B). When the portion 5 is elastically deformed and stretched, the bending portion 5 is in a state of being restricted from returning to the original state by the inner surface of the pipe 11, and in the range of the portion L having a length corresponding to the bending portion 5. The curved portion 5 constitutes a twisted portion 5A. The twisted portion 5A has a coil shape with a large pitch.

上記構成において、ワイヤー本体３を押進することによってパイプ（血管）１１内を移動すると共に、ワイヤー本体３を軸心回りに右回り又は左回りに回動すると、直線状先端部７の先端９は、進行方向（図２（Ｂ）において左方向）を指向した状態において、血管（パイプ）１１から分岐した血管１１Ａ（図３参照）方向に指向されるものである。そして、前記先端９が進行すべき分岐血管の入口に達すると、本筋の血管（パイプ）１１による先端９部分の規制が一部解除される態様となるので、前記湾曲部５の弾性により、前記先端９は分岐血管の方向へ入り込むことになる（図３（Ｂ）参照）。   In the above configuration, when the wire body 3 is pushed to move in the pipe (blood vessel) 11 and the wire body 3 is rotated clockwise or counterclockwise around the axis, the tip 9 of the linear tip portion 7 is moved. Is directed in the direction of the blood vessel 11A (see FIG. 3) branched from the blood vessel (pipe) 11 in the state of being directed in the traveling direction (left direction in FIG. 2B). And when the tip 9 reaches the entrance of the branch blood vessel to be advanced, the restriction of the tip 9 portion by the blood vessel (pipe) 11 of the main muscle is partially released. The distal end 9 enters in the direction of the branch blood vessel (see FIG. 3B).

したがって、前記先端９が分岐血管１１Ａ内に入り込むように、前記ワイヤー本体３を軸心回りに回動して、直線状先端部７を上記分岐血管１１Ａ内へねじり込むようにワイヤー本体３を押し進めることにより、前記直線状先端部７に追従してねじれ部５Ａが次第にねじれ込まれる態様となり、ワイヤー本体３における直線状先端部７を分岐血管１１Ａ内へ容易に進行することができるものである。   Therefore, the wire body 3 is rotated around the axis so that the tip 9 enters the branch blood vessel 11A, and the wire body 3 is pushed forward so that the straight tip 7 is twisted into the branch blood vessel 11A. Thus, the twisted portion 5A is gradually twisted following the straight tip portion 7, and the straight tip portion 7 in the wire body 3 can be easily advanced into the branch blood vessel 11A.

よって、ワイヤー本体３を軸心回りに回動して直線状先端部７の先端を所望する分岐血管１１Ａ方向へ指向して、ねじり込むように操作することにより、所望する血管の方向へワイヤー本体３を容易に進行することができるものである。   Therefore, by rotating the wire body 3 around the axis and directing the distal end of the linear distal end portion 7 toward the desired branch blood vessel 11A and twisting it, the wire body is moved in the desired blood vessel direction. 3 can proceed easily.

ところで、ワイヤー本体３を軸心回りに回動することなく押進して血管１１内を進行しているときに、図３（Ｂ）に示すように、ワイヤー本体３における直線状先端部７の先端９が希望しない分岐血管１１Ａ内に入り込み、この状態すなわち直線状先端部７の先端９が希望しない分岐血管１１Ａ内に入ったことに気付かずにワイヤー本体３の押進を継続すると、前記先端９が分岐血管１１Ａの入口に引っ掛かった状態となる。   By the way, when the wire main body 3 is pushed forward without rotating around the axis and is advanced in the blood vessel 11, the linear tip portion 7 of the wire main body 3 is moved as shown in FIG. If the distal end 9 enters the undesired branching blood vessel 11A and the pushing of the wire body 3 is continued without noticing that this state, that is, the distal end 9 of the linear tip 7 has entered the undesired branching blood vessel 11A, 9 is caught in the entrance of the branch blood vessel 11A.

そして、前記先端９が分岐血管１１Ａの入口に引っ掛かった状態においてワイヤー本体３の押進がさらに続行されると、ねじれ部５Ａが弾性によって元の湾曲部５の形状に復帰するので、本筋の太い血管１１から分岐した細い血管１１Ａ内へワイヤー本体３が迷い込むことを防止することができるものである。   When the wire body 3 is further pushed forward in a state where the tip 9 is caught at the entrance of the branch blood vessel 11A, the twisted portion 5A returns to the original shape of the curved portion 5 due to elasticity, so that the main line is thick. The wire main body 3 can be prevented from straying into the thin blood vessel 11A branched from the blood vessel 11.

前述のごとく、ワイヤー本体３の湾曲部５がねじれ部５Ａの状態から元の螺旋状の形態に復帰したことが検出されたときには、ワイヤー本体３を本筋の血管１１から抜き出して挿入を再度行うものである。   As described above, when it is detected that the bending portion 5 of the wire body 3 has returned to the original spiral form from the state of the twisted portion 5A, the wire body 3 is extracted from the blood vessel 11 of the main muscle and inserted again. It is.

なお、ガイドワイヤー１を挿入する血管１１が全長に亘って太い血管である場合には、図３（Ｄ）に示すように、湾曲部５をねじれ部５Ａに引き伸ばすことなく使用するものである。この場合、ワイヤー本体３の進行方向の先端部に湾曲部５が位置するので、本筋の太い血管１１から分岐した細い分岐血管１１Ａに湾曲部５が入り込むようなことがないものであり、目的位置へ湾曲部５を押し進めることができるものである。   When the blood vessel 11 into which the guide wire 1 is inserted is a thick blood vessel over the entire length, as shown in FIG. 3D, the bending portion 5 is used without being stretched to the twisted portion 5A. In this case, since the bending portion 5 is located at the distal end portion of the wire body 3 in the traveling direction, the bending portion 5 does not enter into the thin branch blood vessel 11A branched from the thick blood vessel 11 of the main muscle. The bending portion 5 can be pushed forward.

以上のごとき説明より理解されるように、ガイドワイヤー１の先端部を、目的としない血管への迷い込みを防止して、目的とする血管内へ容易に押し進めることができるものである。   As can be understood from the above description, the distal end portion of the guide wire 1 can be easily pushed into the target blood vessel while preventing the target blood vessel from getting lost.

本発明の実施形態に係るガイドワイヤーの先端側の形状を示す説明図である。It is explanatory drawing which shows the shape of the front end side of the guide wire which concerns on embodiment of this invention. 本発明の実施形態に係るガイドワイヤーの使用状態を示す説明図である。It is explanatory drawing which shows the use condition of the guide wire which concerns on embodiment of this invention. ガイドワイヤーの迷い込みを防止するための作用説明図である。It is an operation explanatory view for preventing the guide wire from straying.

符号の説明Explanation of symbols

１ ガイドワイヤー
３ ワイヤー本体
５ 湾曲部
５Ａ ねじれ部
７ 直線状先端部
９ 先端
１１ パイプ（血管） DESCRIPTION OF SYMBOLS 1 Guide wire 3 Wire main body 5 Bending part 5A Twist part 7 Straight tip part 9 Tip 11 Pipe (blood vessel)

Claims (4)

先端側に湾曲部を備えた医療用ガイドワイヤーであって、ワイヤー本体の先端側は、ワイヤー本体の先端部が当該ワイヤー本体の基部側へ戻るように湾曲してあり、かつ上記先端部付近は、平面視したときワイヤー本体と鋭角度でもって立体交差してあることを特徴とする医療用ガイドワイヤー。   A medical guide wire having a curved portion on the distal end side, the distal end side of the wire main body is curved so that the distal end portion of the wire main body returns to the base side of the wire main body, and the vicinity of the distal end portion is A medical guide wire characterized by being three-dimensionally crossed with the wire body at an acute angle when seen in a plan view. 先端側に湾曲部を備えた医療用ガイドワイヤーであって、ワイヤー本体の先端側に、ワイヤー本体の軸心に平行な第１平面の一側方向に突出し、かつ前記第１平面に対して直交すると共に前記軸心に平行な第２平面から先端側が次第に離反するように湾曲した螺旋状の湾曲部を備え、この湾曲部の先端側に前記ワイヤー本体に鋭角度でもって立体交差した直線状先端部を備えていることを特徴とする医療用ガイドワイヤー。   A medical guide wire having a curved portion on the distal end side, protruding in one direction of a first plane parallel to the axis of the wire body at the distal end side of the wire body, and orthogonal to the first plane In addition, a linear tip that is provided with a spiral curved portion that is curved so that the tip side is gradually separated from a second plane parallel to the axis, and that intersects the wire body at an acute angle at the tip side of the curved portion. A medical guide wire comprising a portion. 請求項２に記載の医療用ガイドワイヤーにおいて、前記螺旋状の湾曲部の円弧状の部分の範囲は２００°〜２３５°であることを特徴とする医療用ガイドワイヤー。   3. The medical guide wire according to claim 2, wherein a range of an arc-shaped portion of the spiral curved portion is 200 ° to 235 °. 4. 請求項１，２又は３に記載の医療用ガイドワイヤーにおいて、前記直線状先端部が前記ワイヤー本体の押進方向に指向するように前記螺旋状の湾曲部を引き伸ばしたとき、前記ワイヤー本体と前記直線状先端部との間に、ほぼ一周のねじれ部を備える構成であることを特徴とする医療用ガイドワイヤー。   The medical guide wire according to claim 1, 2 or 3, wherein when the spiral curved portion is stretched so that the linear distal end portion is oriented in the pushing direction of the wire body, the wire body and the wire A medical guide wire comprising a twisted portion of substantially one circumference between the straight tip portion.
JP2006311860A 2006-11-17 2006-11-17 Medical guidewire Active JP5030546B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010119867A1 (en) * 2009-04-14 2010-10-21 テルモ株式会社 Medical guide wire
WO2011081134A1 (en) * 2009-12-28 2011-07-07 テルモ株式会社 Guide wire
US9944018B2 (en) 2012-03-23 2018-04-17 Gunze Limited Method for producing composite member

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Publication number Priority date Publication date Assignee Title
WO1992012754A1 (en) * 1991-01-23 1992-08-06 Jan Voda Guide catheter construction
JP2006025907A (en) * 2004-07-13 2006-02-02 Kawasumi Lab Inc Guide wire

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Publication number Priority date Publication date Assignee Title
WO1992012754A1 (en) * 1991-01-23 1992-08-06 Jan Voda Guide catheter construction
JP2006025907A (en) * 2004-07-13 2006-02-02 Kawasumi Lab Inc Guide wire

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010119867A1 (en) * 2009-04-14 2010-10-21 テルモ株式会社 Medical guide wire
EP2420282A1 (en) * 2009-04-14 2012-02-22 Terumo Kabushiki Kaisha Medical guide wire
CN102395400A (en) * 2009-04-14 2012-03-28 泰尔茂株式会社 Medical guide wire
EP2420282A4 (en) * 2009-04-14 2012-10-03 Terumo Corp Medical guide wire
US8517959B2 (en) 2009-04-14 2013-08-27 Terumo Kabushiki Kaisha Guide wire for medical treatment
JP5639580B2 (en) * 2009-04-14 2014-12-10 テルモ株式会社 Medical guidewire
WO2011081134A1 (en) * 2009-12-28 2011-07-07 テルモ株式会社 Guide wire
JP5451779B2 (en) * 2009-12-28 2014-03-26 テルモ株式会社 Guide wire
US9944018B2 (en) 2012-03-23 2018-04-17 Gunze Limited Method for producing composite member

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