JP2003052829A - Guide wire - Google Patents
Guide wireInfo
- Publication number
- JP2003052829A JP2003052829A JP2001241835A JP2001241835A JP2003052829A JP 2003052829 A JP2003052829 A JP 2003052829A JP 2001241835 A JP2001241835 A JP 2001241835A JP 2001241835 A JP2001241835 A JP 2001241835A JP 2003052829 A JP2003052829 A JP 2003052829A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- front portion
- core wire
- tip
- fixed
- 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
- 210000004204 blood vessel Anatomy 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000002872 contrast media Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910018657 Mn—Al Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 description 1
- 238000007887 coronary angioplasty Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- PCLURTMBFDTLSK-UHFFFAOYSA-N nickel platinum Chemical compound [Ni].[Pt] PCLURTMBFDTLSK-UHFFFAOYSA-N 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- ZONODCCBXBRQEZ-UHFFFAOYSA-N platinum tungsten Chemical compound [W].[Pt] ZONODCCBXBRQEZ-UHFFFAOYSA-N 0.000 description 1
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 description 1
- 238000009751 slip forming Methods 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
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、例えば経皮的冠状
動脈血管形成術（ＰＴＣＡ）等に使用するバルーンカテ
ーテルを、血管内に導入する際に使用されるガイドワイ
ヤーの改良に関するものであり、特にコアワイヤー前方
部先端と固定部並びに安全ワイヤー前方部先端と固定部
の固定強度を強くし、コイル部が血管内に取り残されな
いようにしたガイドワイヤーの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a guide wire used for introducing a balloon catheter used for percutaneous coronary angioplasty (PTCA) into a blood vessel. In particular, the present invention relates to an improvement of a guide wire in which the fixing strength of the front end of the core wire and the fixed portion and the front end of the safety wire and the fixed portion is increased so that the coil portion is not left in the blood vessel.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】図５
（（Ａ）は断面図、（Ｂ）は平面図、（Ｃ）は（Ａ）の
右側面図）は従来のガイドワイヤー１１の一例を示す概
略図である。ガイドワイヤー１１はコアワイヤー１２の
外周にコイル部１３を装着し、コアワイヤー１２前方部
１２Ｆを平板状に形成し、該前方部１２Ｆ先端を固定部
１４に埋設している。ガイドワイヤー１１はコアワイヤ
ー１２を先端に向けて先細りに形成し、平板状の前方部
１２Ｆ先端を半田付又はロウ付でコイル部１３先端部に
固定している。図５中、１４はコアワイヤー前方部１２
Ｆ先端とコイル部１３先端部の固定部である。また図６
（（Ａ）は断面図、（Ｂ）は平面図、（Ｃ）は（Ａ）の
右側面図）は従来のガイドワイヤー２１の一例を示す概
略図である。コアワイヤー２２の外周にコイル部２３を
装着し、コアワイヤー前方部２２Ｆに、平板状に形成し
た安全ワイヤー２６を隣接し、該安全ワイヤー前方部２
６Ｆ先端を固定部２４に埋設している。ガイドワイヤー
２１はコアワイヤー１２を先端に向けて先細りに形成
し、安全ワイヤー２６を平板状に形成し、安全ワイヤー
前方部２６Ｆ先端を半田付又はロウ付でコイル部２３先
端部と固定している。図６中、２４はコアワイヤー前方
部２２Ｆ先端とコイル部２３先端部の固定部である。ガ
イドワイヤー１１では前記コアワイヤー前方部１２Ｆ先
端の厚さを、０．０２から０．０８ｍｍ、またガイドワ
イヤー２１では前記安全ワイヤー前方部２６Ｆ先端の厚
さを０．０２から０．０８ｍｍと非常に薄く形成してい
る。血管内に挿入したときは前記コアワイヤー前方部１
２Ｆ先端と前記安全ワイヤー前方部２６Ｆ先端は、双方
とも「く」の字状に曲がるので前記固定部１４、２４近
傍で、稀であるが破断したり、前記固定部１４、２４か
ら離脱し、このためコイル部１３、２３のみが血管内に
取り残される懸念があった。また血管内で引掛って取り
残される懸念もあった。そこで、本発明者は以上の課題
を解決するために鋭意検討を重ねた結果、次の発明に到
達した。Prior Art and Problems to be Solved by the Invention FIG.
((A) is a cross-sectional view, (B) is a plan view, (C) is a right side view of (A)) is a schematic view showing an example of a conventional guide wire 11. In the guide wire 11, the coil portion 13 is attached to the outer periphery of the core wire 12, the front portion 12F of the core wire 12 is formed in a flat plate shape, and the front end of the front portion 12F is embedded in the fixing portion 14. The guide wire 11 is formed by tapering the core wire 12 toward the tip, and the tip of the plate-shaped front portion 12F is fixed to the tip of the coil portion 13 by soldering or brazing. In FIG. 5, 14 is the front part 12 of the core wire.
It is a fixed part of the F tip and the tip of the coil portion 13. See also FIG.
((A) is a cross-sectional view, (B) is a plan view, (C) is a right side view of (A)) is a schematic view showing an example of a conventional guide wire 21. The coil portion 23 is attached to the outer periphery of the core wire 22, and the safety wire 26 formed in a flat plate shape is adjacent to the core wire front portion 22F.
The 6F tip is embedded in the fixed portion 24. The guide wire 21 is formed by tapering the core wire 12 toward the tip, forming the safety wire 26 in a flat plate shape, and fixing the tip of the safety wire front portion 26F to the tip portion of the coil portion 23 by soldering or brazing. . In FIG. 6, reference numeral 24 denotes a fixed portion of the tip of the core wire front portion 22F and the tip of the coil portion 23. In the guide wire 11, the thickness of the tip of the core wire front part 12F is 0.02 to 0.08 mm, and in the guide wire 21, the thickness of the tip of the safety wire front part 26F is 0.02 to 0.08 mm, which is very large. It is thin. The core wire front part 1 when inserted into a blood vessel
Since the 2F tip and the tip of the safety wire front portion 26F both bend in a V shape, they are rarely broken near the fixing portions 14 and 24, or are separated from the fixing portions 14 and 24, Therefore, there is a concern that only the coil portions 13 and 23 are left in the blood vessel. There was also a concern that they might be caught in the blood vessels and left behind. Therefore, as a result of intensive studies to solve the above problems, the present inventor arrived at the next invention.
【０００３】[0003]
【課題を解決するための手段】［１］本発明は、コアワ
イヤー２の外周にコイル部３を装着し、コアワイヤー前
方部２Ｆ先端を固定部４に埋設したガイドワイヤー１、
１Ａであって、前記コアワイヤー前方部２Ｆ先端に、該
前方部２Ｆよりも少なくとも幅Ｗ方向もしくは肉厚Ｔ方
向もしくは半径Ｒ方向に突出し、かつ前記コアワイヤー
前方部２Ｆ先端との間に段差を生成することのできる被
固定部５、５Ａを形成し、前記コアワイヤー２前方部２
Ｆ先端から前記被固定部５、５Ａに亘って前記固定部４
に埋設したガイドワイヤー１、１Ａを提供する。
［２］本発明は、コアワイヤー２の外周にコイル部３を
装着し、コアワイヤー前方部２Ｆに安全ワイヤー６を隣
接し、該安全ワイヤー前方部６Ｆ先端を固定部４に埋設
したガイドワイヤー１Ｂ、１Ｃであって、前記安全ワイ
ヤー前方部６Ｆ先端に、該前方部６Ｆよりも少なくとも
幅Ｗ方向もしくは肉厚Ｔ方向もしくは半径Ｒ方向に突出
し、かつ前記安全ワイヤー前方部６Ｆ先端との間に段差
を生成することのできる被固定部５Ｂ、５Ｃを形成し、
前記安全ワイヤー６前方部６Ｆ先端から前記被固定部５
Ｂ、５Ｃに亘って前記固定部４に埋設したガイドワイヤ
ー１Ｂ、１Ｃを提供する。
［３］本発明は、前記被固定部５、５Ａ、５Ｂ、５Ｃが
矩形部、テーパー部、鍔部である［１］ないし［２］に
記載のガイドワイヤー１、１Ａ、１Ｂ、１Ｃを提供す
る。[1] According to the present invention, a guide wire 1 in which a coil portion 3 is mounted on the outer periphery of a core wire 2 and a front end 2F of the core wire is embedded in a fixing portion 4,
1A, at the tip of the core wire front portion 2F, project at least in the width W direction, the wall thickness T direction or the radius R direction from the front portion 2F, and form a step between the core wire front portion 2F and the tip thereof. The fixed portion 5, 5A that can be generated is formed, and the core wire 2 front portion 2 is formed.
From the tip of F to the fixed portions 5, 5A, the fixing portion 4
The guide wires 1 and 1A embedded in are provided. [2] The present invention is a guide wire 1B in which the coil portion 3 is attached to the outer periphery of the core wire 2, the safety wire 6 is adjacent to the core wire front portion 2F, and the tip of the safety wire front portion 6F is embedded in the fixing portion 4. 1C, the tip of the safety wire front portion 6F projects at least in the width W direction, the wall thickness T direction, or the radius R direction from the front portion 6F, and a step is formed between the safety wire front portion 6F and the safety wire front portion 6F. To form fixed parts 5B and 5C capable of generating
From the tip of the front portion 6F of the safety wire 6 to the fixed portion 5
The guide wires 1B and 1C embedded in the fixing part 4 are provided across B and 5C. [3] The present invention provides the guide wires 1, 1A, 1B, 1C according to [1] or [2], wherein the fixed portions 5, 5A, 5B, 5C are rectangular portions, tapered portions, and collar portions. To do.
【０００４】[0004]
【発明の実施の形態】図１から図４は本発明のガイドワ
イヤーの一例を示す概略図である。図１から図２におい
て、（Ａ）は断面図、（Ｂ）は平面図、（Ｃ）は（Ａ）
の右側面図、（Ｄ）は前記（Ａ）、（Ｂ）、（Ｃ）の一
部拡大断面図である。また図３から図４において、
（Ａ）は断面図、（Ｂ）は底面図、（Ｃ）は（Ａ）の右
側面図である。図１と図２に例示した本発明のガイドワ
イヤー１、１Ａはコアワイヤー２の中間部２Ｍから前方
部２Ｆの外周に亘ってコイル部３を装着し、コアワイヤ
ー前方部２Ｆ先端を固定部４に埋設したガイドワイヤー
１、１Ａであって、前記コアワイヤー前方部２Ｆ先端
に、該前方部２Ｆよりも少なくとも幅Ｗ方向もしくは肉
厚Ｔ方向もしくは半径Ｒ方向に突出し、かつ前記コアワ
イヤー前方部２Ｆ先端との間に段差を生成することので
きる被固定部５、５Ａを形成し、前記コアワイヤー前方
部２Ｆ先端から前記被固定部５、５Ａに亘って前記固定
部４に埋設したガイドワイヤー１、１Ａである。1 to 4 are schematic views showing an example of a guide wire of the present invention. 1 to 2, (A) is a sectional view, (B) is a plan view, and (C) is (A).
And (D) is a partially enlarged cross-sectional view of (A), (B), and (C). Further, in FIG. 3 to FIG.
(A) is a sectional view, (B) is a bottom view, and (C) is a right side view of (A). In the guide wires 1 and 1A of the present invention illustrated in FIGS. 1 and 2, the coil portion 3 is attached from the intermediate portion 2M of the core wire 2 to the outer periphery of the front portion 2F, and the tip of the core wire front portion 2F is fixed to the fixing portion 4. The guide wire 1, 1A embedded in the core wire front portion 2F, the core wire front portion 2F protruding at least in the width W direction, the wall thickness T direction, or the radius R direction from the front portion 2F, and the core wire front portion 2F. A fixed portion 5, 5A capable of forming a step with the tip is formed, and the guide wire 1 embedded in the fixed portion 4 extends from the tip of the core wire front portion 2F to the fixed portion 5, 5A. 1A.
【０００５】本発明で前記被固定部５とは図１のガイド
ワイヤー１では矩形部であり、該矩形部は平板状に形成
された前記コアワイヤー前方部２Ｆよりも少なくとも肉
厚Ｔ方向に肉厚に形成されている。また本発明で前記被
固定部５Ａとは図２のガイドワイヤー１Ａではテーパー
部であり、該テーパー部は平板状に形成された前記コア
ワイヤー前方部２Ｆよりも少なくとも幅Ｗ方向もしくは
肉厚Ｔ方向もしくは半径Ｒ方向に肉厚に形成されてい
る。肉厚の前記被固定部５Ａの形状は、例えば円柱状、
円錐状であっても良い。図１及び図２のガイドワイヤー
１、１Ａにおいて、前記矩形部またはテーパー部として
形成された前記被固定部５、５Ａは、平板状に形成され
た前記コアワイヤー前方部２Ｆよりも少なくとも幅Ｗ方
向に肉厚に形成しても良いし、肉厚Ｔ方向及び幅Ｗ方向
の両方に肉厚に形成しても良い。また本発明では前記コ
アワイヤー前方部２Ｆを平板状に形成する代わりに、先
端方向に向けて先細りのテーパー状に形成しても良い。
この場合、前記矩形部またはテーパー部として形成され
た前記被固定部５、５Ａの代わりに前記先細りのテーパ
ー状に形成されたコアワイヤー前方部２Ｆよりも少なく
とも半径Ｒ方向に肉厚に形成した鍔状の被固定部（図示
せず）を形成しても良い。In the present invention, the fixed portion 5 is a rectangular portion in the guide wire 1 of FIG. 1, and the rectangular portion is at least thicker than the front portion 2F of the core wire formed in a flat plate shape in the thickness T direction. It is formed thick. In the present invention, the fixed portion 5A is a taper portion in the guide wire 1A of FIG. 2, and the taper portion is at least in the width W direction or the wall thickness T direction than the core wire front portion 2F formed in a flat plate shape. Alternatively, it is formed thick in the radius R direction. The shape of the thick fixed portion 5A is, for example, a columnar shape,
It may be conical. In the guide wires 1 and 1A of FIGS. 1 and 2, the fixed portions 5 and 5A formed as the rectangular portions or the tapered portions are at least in the width W direction than the core wire front portion 2F formed in a flat plate shape. It may be formed to be thick, or may be formed to be thick both in the thickness T direction and the width W direction. Further, in the present invention, the core wire front portion 2F may be formed in a taper shape which is tapered toward the tip end, instead of being formed in a flat plate shape.
In this case, instead of the fixed portions 5 and 5A formed as the rectangular portion or the tapered portion, a collar formed to be thicker at least in the radius R direction than the core wire front portion 2F formed in the tapered shape. A fixed portion (not shown) may be formed.
【０００６】以上のように前記被固定部５、５Ａと前記
コアワイヤー前方部２Ｆ先端との境界部の間に段差部分
が生じ、前記コアワイヤー前方部２Ｆ先端から前記被固
定部５、５Ａに亘って、前記固定部４内に埋設すること
により、前記段差部分が前記固定部４内でアンカーの役
割を果たす。したがってガイドワイヤー１、１Ａを血管
内に挿入したとき、コアワイヤー２が基端部２Ｂ方向に
引き抜けようとする力を前記被固定部５、５Ａが阻止す
るため、コアワイヤー前方部２Ｆ先端と固定部４の固定
強度を向上させることができ、ガイドワイヤー１、１Ａ
全体の引っ張り強度を向上させることができる。As described above, a step portion is formed between the fixed portions 5 and 5A and the boundary portion between the core wire front portion 2F and the fixed portion 5, 5A from the core wire front portion 2F tip. By being embedded in the fixing portion 4 over the entire length, the step portion functions as an anchor in the fixing portion 4. Therefore, when the guide wires 1 and 1A are inserted into the blood vessel, the fixed portions 5 and 5A prevent the core wire 2 from pulling out in the direction of the proximal end portion 2B. The fixing strength of the fixing portion 4 can be improved, and the guide wires 1, 1A
The overall tensile strength can be improved.
【０００７】また図３と図４に例示した本発明のガイド
ワイヤー１Ｂ、１Ｃはコアワイヤー２の外周にコイル部
３を装着し、コアワイヤー前方部２Ｆに安全ワイヤー６
を隣接し、該安全ワイヤー前方部６Ｆ先端を固定部４に
埋設したガイドワイヤー１Ｂ、１Ｃであって、前記安全
ワイヤー前方部６Ｆ先端に、該前方部６Ｆよりも少なく
とも幅Ｗ方向もしくは肉厚Ｔ方向もしくは半径Ｒ方向に
突出し、かつ前記安全ワイヤー前方部６Ｆ先端との間に
段差を生成することのできる被固定部５Ｂ、５Ｃを形成
し、前記安全ワイヤー前方部６Ｆ先端から前記被固定部
５Ｂ、５Ｃに亘って前記固定部４に埋設したガイドワイ
ヤー１Ｂ、１Ｃである。In the guide wires 1B and 1C of the present invention illustrated in FIGS. 3 and 4, the coil portion 3 is attached to the outer periphery of the core wire 2, and the safety wire 6 is attached to the front portion 2F of the core wire.
And a guide wire 1B, 1C in which the tip of the safety wire front portion 6F is embedded in the fixing portion 4, the guide wire 1B, 1C being at least in the width W direction or the wall thickness T than the front portion 6F. To be fixed direction 5B or 5C that can project in the direction of the radius or in the radius R direction and form a step between the tip of the safety wire front portion 6F and the tip of the safety wire front portion 6F. 5C, which are guide wires 1B and 1C embedded in the fixed portion 4 over a range of 5C.
【０００８】本発明で前記被固定部５Ｂとは図３のガイ
ドワイヤー１Ｂでは矩形部であり、該矩形部は平板状に
形成された前記安全ワイヤー６前方よりも少なくとも肉
厚Ｔ方向に肉厚に形成されている。また本発明で前記被
固定部５Ｃとは図４のガイドワイヤー１Ａではテーパー
部であり、該テーパー部は平板状に形成された前記安全
ワイヤー前方部６Ｆよりも少なくとも肉厚Ｔ方向に肉厚
に形成されている。図３及び図４のガイドワイヤー１
Ｂ、１Ｃにおいて、前記矩形部またはテーパー部として
形成された前記被固定部５Ｂ、５Ｃは、平板状に形成さ
れた前記安全ワイヤー前方部６Ｆよりも少なくとも幅Ｗ
方向に肉厚に形成しても良いし、肉厚Ｔ方向及び幅Ｗ方
向の両方に肉厚に形成しても良い。また前記安全ワイヤ
ー前方部６Ｆを平板状に形成する代わりに、前記安全ワ
イヤー６全体またはその前方部６Ｆのみを先端方向に向
けて先細りのテーパー状に形成しても良い。この場合、
前記矩形部またはテーパー部として形成された前記被固
定部５Ｂ、５Ｃの代わりに前記先細りのテーパー状に形
成された前記安全ワイヤー６またはその前方部６Ｆより
も少なくとも半径Ｒ方向に肉厚に形成した鍔状の被固定
部（図示せず）を形成しても良い。In the present invention, the fixed portion 5B is a rectangular portion in the guide wire 1B of FIG. 3, and the rectangular portion is thicker at least in the thickness T direction than the front of the safety wire 6 formed in a flat plate shape. Is formed in. In the present invention, the fixed portion 5C is a taper portion in the guide wire 1A of FIG. 4, and the taper portion is thicker at least in the thickness T direction than the safety wire front portion 6F formed in a flat plate shape. Has been formed. Guide wire 1 of FIGS. 3 and 4
In B and 1C, the fixed portions 5B and 5C formed as the rectangular portion or the tapered portion have at least a width W larger than that of the safety wire front portion 6F formed in a flat plate shape.
It may be formed to be thick in the direction, or may be formed to be thick in both the thickness T direction and the width W direction. Further, instead of forming the safety wire front portion 6F in a flat plate shape, the entire safety wire 6 or only the front portion 6F thereof may be formed in a taper shape which is tapered toward the distal end direction. in this case,
The safety wire 6 formed in the tapered shape instead of the fixed portions 5B and 5C formed as the rectangular portion or the taper portion or the front portion 6F thereof is formed to be thicker at least in the radius R direction. A collar-shaped fixed portion (not shown) may be formed.
【０００９】以上のように前記被固定部５Ｂ、５Ｃと前
記安全ワイヤー前方部６Ｆ先端との境界部の間に段差部
分が生じ、前記安全ワイヤー前方部６Ｆから前記被固定
部５Ｂ、５Ｃに亘って、前記固定部４内に埋設すること
により、前記段差部分が前記固定部４内でアンカーの役
割を果たす。したがってガイドワイヤー１Ｂ、１Ｃを血
管内に挿入したとき、コアワイヤー２が基端部２Ｂ方向
に引き抜けようとする力を前記被固定部５Ｂ、５Ｃが阻
止するため、前記安全ワイヤー前方部６Ｆ先端と固定部
４の固定強度を向上させることができ、ガイドワイヤー
１Ｂ、１Ｃ全体の引っ張り強度を向上させることができ
る。As described above, a step is formed between the fixed portions 5B, 5C and the front end of the safety wire front portion 6F, and the step portion extends from the safety wire front portion 6F to the fixed portions 5B, 5C. By being embedded in the fixing portion 4, the step portion plays a role of an anchor in the fixing portion 4. Therefore, when the guide wires 1B, 1C are inserted into the blood vessel, the fixed portions 5B, 5C prevent the core wire 2 from pulling out in the direction of the proximal end portion 2B. The fixing strength of the fixing portion 4 can be improved, and the tensile strength of the entire guide wires 1B and 1C can be improved.
【００１０】本発明で、図１と図２に例示したガイドワ
イヤー１、１Ａはコアワイヤー前方部２Ｆ先端から前記
被固定部４、４Ａに亘って、半田付又はロウ付でコイル
部３先端部に固定している。図１、図２中、４はコアワ
イヤー前方部２Ｆ先端とコイル部３先端部の固定部であ
る。また図３と図４に例示したガイドワイヤー１Ｂ、１
Ｃは安全ワイヤー前方部６Ｆ先端から前記被固定部４
Ｂ、４Ｃに亘って、半田付又はロウ付でコイル部３先端
部に固定している。図３、図４中、４は安全ワイヤー前
方部６Ｆ先端とコイル部３先端部の固定部である。本発
明で、コアワイヤー２と安全ワイヤー６は、例えばステ
ンレス、Ｎｉ−Ｔｉ、Ｃｕ−Ｍｎ−Ａｌ系合金等の可と
う性を有する金属からなり、コアワイヤー２は図１から
図４のように太径の基端部２Ｂ、中径の中間部２Ｍ、細
径の前方部２Ｆ、被固定部５、５Ａのように連続して形
成しても良い。または必要に応じて連続したテーパーＴ
を介在させても良いし、段差になっていても良い。また
は連続した先細りのテーパー状に形成しても良い。また
安全ワイヤー６は、全体を平板状に形成しても良いし、
前記安全ワイヤー６全体またはその前方部６Ｆのみを先
端方向に向けて先細りのテーパー状に形成しても良い。
必要に応じて連続したテーパーＴを介在させても良い
し、段差になっていても良い。前方部６Ｆ先端に前記被
固定部５Ｂ、５Ｃを装着する。また本発明で、コイル部
３とは、例えば白金−ニッケル合金または金、白金、白
金−タングステン、白金−イリジウム合金、タングステ
ン、金、これらの材料の合金等の金属材料（造影材また
は放射線透過材ともいう）より構成しても良いし、例え
ばステンレス（例えばＳＵＳ３０２、ＳＵＳ３０４合金
またはＳＵＳ３１６合金）等またはこれらと同等の物性
を有する金属材料（非造影材または放射線透過材ともい
う）より構成しても良い。または前記造影材（放射線透
過材）と非造影材（放射線透過材）を組み合わせても良
い。In the present invention, the guide wires 1 and 1A illustrated in FIGS. 1 and 2 are soldered or brazed to the tip of the coil portion 3 from the tip of the front portion 2F of the core wire to the fixed portions 4 and 4A. It is fixed to. In FIG. 1 and FIG. 2, 4 is a fixed part of the front end of the core wire front portion 2F and the front end of the coil portion 3. In addition, the guide wires 1B and 1 illustrated in FIGS.
C is the fixed part 4 from the tip of the front part 6F of the safety wire
It fixes to the front-end | tip part of the coil part 3 by soldering or brazing over B and 4C. In FIGS. 3 and 4, reference numeral 4 is a fixed portion of the tip of the safety wire front portion 6F and the tip of the coil portion 3. In the present invention, the core wire 2 and the safety wire 6 are made of a flexible metal such as stainless steel, Ni—Ti, Cu—Mn—Al alloy, and the core wire 2 is as shown in FIGS. 1 to 4. The base end portion 2B having a large diameter, the middle portion 2M having a medium diameter, the front portion 2F having a small diameter, and the fixed portions 5 and 5A may be continuously formed. Or continuous taper T as required
May be interposed or there may be a step. Alternatively, it may be formed in a continuous taper shape. The safety wire 6 may be formed in a flat plate shape as a whole,
The entire safety wire 6 or only the front portion 6F thereof may be formed in a taper shape which is tapered toward the tip end direction.
If necessary, a continuous taper T may be interposed or a step may be formed. The fixed portions 5B and 5C are attached to the tip of the front portion 6F. In the present invention, the coil portion 3 means, for example, a metal material such as platinum-nickel alloy or gold, platinum, platinum-tungsten, platinum-iridium alloy, tungsten, gold, alloys of these materials (contrast material or radiation transmitting material). (Also referred to as "), or, for example, stainless steel (for example, SUS302, SUS304 alloy or SUS316 alloy) or the like or a metal material (also referred to as non-contrast material or radiation transmitting material) having physical properties equivalent to these. good. Alternatively, the contrast material (radiation transmitting material) and the non-contrast material (radiation transmitting material) may be combined.
【００１１】[0011]
【発明の作用効果】本発明のガイドワイヤー１、１Ａ
は、コアワイヤー前方部２Ｆ先端に、該前方部２Ｆより
も少なくとも幅Ｗ方向もしくは肉厚Ｔ方向もしくは半径
Ｒ方向に突出し、かつ前記コアワイヤー前方部２Ｆ先端
との間に段差を生成することのできる被固定部５、５Ａ
を形成し、また本発明のガイドワイヤー１Ｂ、１Ｃは、
前記安全ワイヤー前方部６Ｆ先端に、該前方部６Ｆより
も少なくとも幅Ｗ方向もしくは肉厚Ｔ方向もしくは半径
Ｒ方向に突出し、かつ前記安全ワイヤー前方部６Ｆ先端
との間に段差を生成することのできる被固定部５Ｂ、５
Ｃを形成しているので、従来のガイドワイヤー１１、２
１と比較して、コアワイヤー前方部２Ｆ先端と固定部４
並びに安全ワイヤー前方部６Ｆ先端と固定部４の引っ張
り強度が強くなり、コアワイヤー前方部２Ｆ並びに安全
ワイヤー前方部６Ｆが固定部５近傍で破断したり、離脱
する虞がなくなる。このためコイル部３のみが血管内に
取り残される懸念を解消することができる。[Advantageous Effects of the Invention] Guide wires 1, 1A of the present invention
At the tip of the core wire front portion 2F, at least in the width W direction, the thickness T direction, or the radius R direction projecting from the front portion 2F, and forming a step between the core wire front portion 2F and the tip. Possible fixed parts 5, 5A
And the guide wires 1B, 1C of the present invention are
At the tip of the safety wire front portion 6F, at least a width W direction, a wall thickness T direction, or a radius R direction can be projected from the front portion 6F, and a step can be formed between the safety wire front portion 6F and the safety wire front portion 6F. Fixed parts 5B, 5
Since C is formed, the conventional guide wires 11, 2
Compared with 1, the front end of the core wire front part 2F and the fixing part 4
In addition, the tensile strength between the tip of the safety wire front portion 6F and the fixing portion 4 becomes strong, and there is no risk of the core wire front portion 2F and the safety wire front portion 6F breaking or detaching in the vicinity of the fixing portion 5. Therefore, it is possible to eliminate the concern that only the coil portion 3 is left in the blood vessel.
【図１】本発明のガイドワイヤーの概略図（（Ａ）断面
図、（Ｂ）平面図、（Ｃ）（Ａ）の右側面図、（Ｄ）は
前記（Ａ）、（Ｂ）、（Ｃ）の一部拡大断面図）FIG. 1 is a schematic view of a guide wire of the present invention ((A) sectional view, (B) plan view, (C) right side view of (A), (D) the above (A), (B), ( (Partially enlarged sectional view of C))
【図２】本発明のガイドワイヤーの概略図（（Ａ）断面
図、（Ｂ）平面図、（Ｃ）（Ａ）の右側面図、（Ｄ）は
前記（Ａ）、（Ｂ）、（Ｃ）の一部拡大断面図）FIG. 2 is a schematic view of a guide wire of the present invention ((A) sectional view, (B) plan view, (C) right side view of (A), (D) the above (A), (B), ( (Partially enlarged sectional view of C))
【図３】本発明のガイドワイヤーの概略図（（Ａ）断面
図、（Ｂ）底面図、（Ｃ）（Ａ）の右側面図）FIG. 3 is a schematic view of a guide wire of the present invention ((A) sectional view, (B) bottom view, (C) right side view).
【図４】本発明のガイドワイヤーの概略図（（Ａ）断面
図、（Ｂ）底面図、（Ｃ）（Ａ）の右側面図）FIG. 4 is a schematic view of a guide wire of the present invention ((A) sectional view, (B) bottom view, (C) right side view).
【図５】従来のガイドワイヤーの概略図（（Ａ）断面
図、（Ｂ）平面図、（Ｃ）（Ａ）の右側面図）FIG. 5 is a schematic view of a conventional guide wire ((A) sectional view, (B) plan view, (C) right side view).
【図６】従来のガイドワイヤーの概略図（（Ａ）断面
図、（Ｂ）平面図、（Ｃ）（Ａ）の右側面図）FIG. 6 is a schematic view of a conventional guide wire ((A) cross-sectional view, (B) plan view, (C) right side view).
１、１Ａ、１Ｂ、１Ｃ ガイドワイヤー ２ コアワイヤー ２Ｆ 前方部 ２Ｍ 中間部 ２Ｂ 基端部 ３ コイル部 ４ 固定部 ５、５Ａ、５Ｂ、５Ｃ 被固定部 ６Ｂ、６Ｃ 安全ワイヤー ６Ｆ 前方部 1, 1A, 1B, 1C guide wire 2 core wire 2F front part 2M middle part 2B base end 3 coil part 4 fixed part 5, 5A, 5B, 5C Fixed part 6B, 6C safety wire 6F front part
Claims (3)
し、コアワイヤー前方部２Ｆ先端を固定部４に埋設した
ガイドワイヤー１、１Ａであって、 前記コアワイヤー前方部２Ｆ先端に、該前方部２Ｆより
も少なくとも幅Ｗ方向もしくは肉厚Ｔ方向もしくは半径
Ｒ方向に突出し、かつ前記コアワイヤー前方部２Ｆ先端
との間に段差を生成することのできる被固定部５、５Ａ
を形成し、 前記コアワイヤー２前方部２Ｆ先端から前記被固定部
５、５Ａに亘って前記固定部４に埋設した、ことを特徴
とするガイドワイヤー１、１Ａ。1. A guide wire 1, 1A in which a coil portion 3 is attached to the outer periphery of a core wire 2 and a tip of a core wire front portion 2F is embedded in a fixing portion 4, the guide wire 1, 1A comprising: The fixed portions 5, 5A that project at least in the width W direction, the wall thickness T direction, or the radius R direction from the front portion 2F and that can form a step with the tip of the core wire front portion 2F.
And is embedded in the fixed portion 4 from the front end of the front portion 2F of the core wire 2 to the fixed portions 5 and 5A.
し、コアワイヤー前方部２Ｆに安全ワイヤー６を隣接
し、該安全ワイヤー前方部６Ｆ先端を固定部４に埋設し
たガイドワイヤー１Ｂ、１Ｃであって、 前記安全ワイヤー前方部６Ｆ先端に、該前方部６Ｆより
も少なくとも幅Ｗ方向もしくは肉厚Ｔ方向もしくは半径
Ｒ方向に突出し、かつ前記安全ワイヤー前方部６Ｆ先端
との間に段差を生成することのできる被固定部５Ｂ、５
Ｃを形成し、 前記安全ワイヤー６前方部６Ｆ先端から前記被固定部５
Ｂ、５Ｃに亘って前記固定部４に埋設した、ことを特徴
とするガイドワイヤー１Ｂ、１Ｃ。2. A guide wire 1B, 1C in which a coil portion 3 is mounted on the outer periphery of a core wire 2, a safety wire 6 is adjacent to a front portion 2F of the core wire, and a front end of the safety wire front portion 6F is embedded in a fixing portion 4. The front portion of the safety wire 6F projects at least in the width W direction, the wall thickness T direction, or the radius R direction from the front portion 6F, and a step is formed between the safety wire front portion 6F and the front portion. Fixed parts 5B, 5 that can be
C is formed, and from the front end of the front portion 6F of the safety wire 6 to the fixed portion 5
Guide wires 1B, 1C, characterized in that they are embedded in the fixing portion 4 over B, 5C.
部、テーパー部、鍔部である、ことを特徴とする請求項
１ないし請求項２に記載のガイドワイヤー１、１Ａ、１
Ｂ、１Ｃ。3. The guide wires 1, 1A, 1 according to claim 1, wherein the fixed portions 5, 5A, 5B, 5C are rectangular portions, tapered portions, and flange portions.
B, 1C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001241835A JP4774169B2 (en) | 2001-08-09 | 2001-08-09 | Guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001241835A JP4774169B2 (en) | 2001-08-09 | 2001-08-09 | Guide wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003052829A true JP2003052829A (en) | 2003-02-25 |
| JP4774169B2 JP4774169B2 (en) | 2011-09-14 |
Family
ID=19072201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001241835A Expired - Fee Related JP4774169B2 (en) | 2001-08-09 | 2001-08-09 | Guide wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4774169B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343121A (en) * | 2010-08-02 | 2012-02-08 | 朝日英达科株式会社 | Guidewire |
| JP2012152478A (en) * | 2011-01-28 | 2012-08-16 | Asahi Intecc Co Ltd | Guidewire |
| JP2016064062A (en) * | 2014-09-25 | 2016-04-28 | テルモ株式会社 | Guide wire |
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|---|---|---|---|---|
| JPH0360674A (en) * | 1989-07-26 | 1991-03-15 | Interventional Technol Inc | Wire guide for catheter |
| JPH04500919A (en) * | 1988-08-16 | 1992-02-20 | マイクロベナ コーポレーション | Flexible guide with safety tip |
| JP2000107296A (en) * | 1998-10-02 | 2000-04-18 | Terumo Corp | Medical wire and its production |
| JP2000135289A (en) * | 1998-08-28 | 2000-05-16 | Piolax Inc | Medical guide wire and manufacture of the same |
-
2001
- 2001-08-09 JP JP2001241835A patent/JP4774169B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04500919A (en) * | 1988-08-16 | 1992-02-20 | マイクロベナ コーポレーション | Flexible guide with safety tip |
| JPH0360674A (en) * | 1989-07-26 | 1991-03-15 | Interventional Technol Inc | Wire guide for catheter |
| JP2000135289A (en) * | 1998-08-28 | 2000-05-16 | Piolax Inc | Medical guide wire and manufacture of the same |
| JP2000107296A (en) * | 1998-10-02 | 2000-04-18 | Terumo Corp | Medical wire and its production |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343121A (en) * | 2010-08-02 | 2012-02-08 | 朝日英达科株式会社 | Guidewire |
| EP2415497A1 (en) | 2010-08-02 | 2012-02-08 | Asahi Intecc Co., Ltd. | Guidewire |
| JP2012029978A (en) * | 2010-08-02 | 2012-02-16 | Asahi Intecc Co Ltd | Guidewire |
| JP2012152478A (en) * | 2011-01-28 | 2012-08-16 | Asahi Intecc Co Ltd | Guidewire |
| US8758269B2 (en) | 2011-01-28 | 2014-06-24 | Asahi Intecc Co., Ltd. | Guidewire |
| JP2016064062A (en) * | 2014-09-25 | 2016-04-28 | テルモ株式会社 | Guide wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4774169B2 (en) | 2011-09-14 |
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