JP2008206702A - Catheter balloon - Google Patents

Catheter balloon Download PDF

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JP2008206702A
JP2008206702A JP2007046168A JP2007046168A JP2008206702A JP 2008206702 A JP2008206702 A JP 2008206702A JP 2007046168 A JP2007046168 A JP 2007046168A JP 2007046168 A JP2007046168 A JP 2007046168A JP 2008206702 A JP2008206702 A JP 2008206702A
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balloon
member
auxiliary member
catheter
end
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Toshiaki Masuda
Shinji Momotani
利明 増田
伸ニ 桃谷
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Nipro Corp
ニプロ株式会社
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Priority to JP2007046168A priority Critical patent/JP2008206702A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a catheter balloon which is easily positioned in a gap between a balloon and a part to be expanded in a bent region and is equipped with an expansion auxiliary member designed not to fall out when the balloon is excessively inflated to have a diameter greater than a prescribed diameter. <P>SOLUTION: In the catheter balloon 1 having the expansion auxiliary member 4 for expanding a narrowed region on the outer surface of the balloon 3, the expansion auxiliary member is extended from the proximal end part of the balloon to the distal end part. One end of the expansion auxiliary member is fixed on a first supporting member 5 provided on the proximal end part, and the other end side of the expansion auxiliary member is kept to be slidable at a second supporting member 6 provided on the distal end part. The other end of the expansion auxiliary member is protruded from the second supporting member. Consequently, the catheter balloon 1 is constituted to provide the expansion auxiliary member 4 from the proximal end part to the distal end part of the balloon when the balloon 3 is inflated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、カテーテル用バルーンに関し、特に、強固病変部においてもバルーン部を容易に膨張可能とするカテーテル用バルーンに関するものである。 The present invention relates to a balloon catheter, in particular, it relates to a catheter balloon which easily expandable balloon portion even in strongly lesions.

従来、患者の血管の閉塞や狭窄を治療する医療器具として、血管内に挿入して膨張させて血管を拡張するバルーンを有する拡張用バルーンカテーテルが知られている。 Conventionally, as a medical device for treating an occlusion or stenosis of the patient's blood vessels, dilation balloon catheter having a balloon which is inflated by inserting into a blood vessel to dilate the vessel is known. また、このバルーンの望ましいサイズおよび物理的特性は、患者の血管の大きさやバルーンの用途によって異なっている。 Further, the desired size and physical properties of the balloon is different by the patient's blood vessel size and balloon applications.
また、従来の拡張用バルーンカテーテルで拡張が困難な場合、バルーンと被拡張部との間にワイヤなどを挿入したり、バルーン外面に切刃を具備したりして拡張率を向上させることが行われている。 Also, when expanded in a conventional expansion balloon catheter it is difficult, the balloon insertion or, a row to improve the expansion ratio or provided with a cutting edge to the balloon outer surface and wires between the extension are we. さらに、バルーン外面に設けた切刃を振動させることで拡張効果を高めるバルーンカテーテルが既に提案されている(例えば、特許文献1参照)。 Furthermore, a balloon catheter to enhance the expansion effect by vibrating the cutting blade provided on the balloon outer surface has already been proposed (e.g., see Patent Document 1).

特開平7−67967号公報 JP 7-67967 discloses

しかし、バルーン外面に切刃を装着しただけの構成では、予め定められた径に対して有効であって、規定の径よりも過度に膨張した場合には、切刃が脱落する虞が生じる。 However, in the configuration in which only fitted with a cutting edge to the balloon outer surface, an effect for a predetermined diameter, when inflated excessively than the diameter of the prescribed occurs a possibility that the cutting edge from falling.
また、屈曲した部位においても、単にバルーン外面に切刃を装着した構成では対応が困難となる。 Also in curved portions, simply correspond becomes difficult in the configuration of mounting the cutting blade to the balloon outer surface.
本発明の目的は、上記問題を解決するために、屈曲した部位においても、バルーンと被拡張部との間隙に容易に位置すると共に、バルーンが規定の径よりも過度に膨張した場合にも脱落しない拡張補助部材を備えるカテーテル用バルーンを提供することである。 An object of the present invention, in order to solve the above problems, falling even in sites which are bent, balloon and thereby easily located in the gap between the extension portion, even when the balloon is inflated excessively than the diameter of the defined it is to provide a balloon catheter having an extended auxiliary member not.

上記の目的を達成するために請求項1に係る発明は、バルーン外面に狭窄部位を拡張するための拡張補助部材を有するカテーテル用バルーンであって、前記拡張補助部材をバルーンの基端部から先端部まで延設すると共に、前記基端部に設ける第一支持部材と、前記先端部に設ける第二支持部材とで、前記拡張補助部材を摺動自在に保持すると共に、前記拡張補助部材の端部を前記第一および第二支持部材の少なくとも一方から突出させて、バルーンが膨張しても前記拡張補助部材がバルーンの基端部から先端部まで配設される構成としたことを特徴としている。 Invention relates to a balloon catheter having an expandable auxiliary member for expanding the stenosis the balloon outer surface, the tip of the extended auxiliary member from the proximal end of the balloon according to claim 1 in order to achieve the above object parts as well as extended to a first support member provided on the proximal end, with a second support member provided on the tip portion holds the expanded auxiliary member slidably, end of the extension auxiliary member part and the protruded from at least one of said first and second support members, the balloon is characterized in that a configuration in which the expanded auxiliary member also expands is disposed from the proximal end of the balloon to the distal end .

上記の構成を有する請求項1に係る発明によれば、バルーン外面に装着する拡張補助部材を第一および第二支持部材を介してスライド自在に保持するので、血管内でバルーンが膨張・収縮を繰り返しても、その変位に容易に追随して、常時前記拡張補助部材がバルーンの基端部から先端部まで配設され、拡張補助部材が脱落することがない。 According to the invention of claim 1 having the configuration described above, since the extension auxiliary member to be mounted on the balloon outer surface through the first and second supporting members slidably retained, the balloon in the blood vessel expansion and contraction also repeated, to easily follow the displacement, is disposed from the proximal end always the extension auxiliary member is a balloon to the distal end, extension auxiliary member is prevented from falling off.

請求項2に係る発明は、前記第一支持部材に前記拡張補助部材の一端を固定し、前記先端部に設ける第二支持部材に前記拡張補助部材の他端側を摺動自在に保持すると共に、前記拡張補助部材の他端を前記第二支持部材から突出させたことを特徴としている。 Together invention according to claim 2, one end of said extension auxiliary member fixed to the first support member, for holding the other end of the extension auxiliary member to the second supporting member provided in the distal portion slidably It is characterized in that the other end of the extension auxiliary member is projected from said second supporting member.
上記の構成を有する請求項2に係る発明によれば、バルーン外面に装着する拡張補助部材の一端を第一支持部材で保持し、他端を第二支持部材がスライド自在に保持するので、血管内で膨張・収縮を繰り返しても、拡張補助部材が脱落することがない。 According to the invention of claim 2 having the structure described above, by holding one end of the extension auxiliary member to be mounted to the balloon outer surface in the first support member, since the other end of the second support member for holding slidably vascular even after repeated expansion and contraction in the inner, extended auxiliary member is prevented from falling off.

請求項3に係る発明は、前記拡張補助部材を、鋭利に研磨された切先部を有する弾性変形可能なワイヤ製とし、前記第二支持部材に、前記ワイヤが前記切先部を外面に向けて挿通自在となる挿通孔を設けたことを特徴としている。 The invention according to claim 3, said extension auxiliary member, and elastically deformable wire made with cutting edge portion which is sharpened polished, the the second support member, said wire toward the cutting edge portion to the outer surface It is characterized in that a through freely become insertion hole Te.
上記の構成を有する請求項3に係る発明によれば、弾性変形するワイヤ部材を用いることで、バルーンの膨張・収縮に容易に追従する拡張補助部材を得ることができる。 According to the invention of claim 3 having the structure described above, by using the wire member elastically deformed, it is possible to obtain an expanded auxiliary member to easily follow the expansion and contraction of the balloon. また、鋭利に研磨された切先部で強固病変部をも確実に拡張可能となる。 Further, it is surely expandable strong lesion with the cutting edge portion which is sharpened polished. さらに、第二支持部材の挿通孔によりガイドされるので、バルーンの膨張・収縮に応じて確実にスライドすることができる。 Furthermore, since it is guided by the insertion hole of the second support member can be reliably slid in response to expansion and contraction of the balloon.

請求項4に係る発明は、前記拡張補助部材がニッケル・チタン合金製であることを特徴としている。 The invention according to claim 4 is characterized in that the extension auxiliary member is made of a nickel-titanium alloy.
上記の構成を有する請求項4に係る発明によれば、金属製であるので、狭窄血管を確実に拡げることができ、さらに所定の形状を維持する形状記憶合金となるので、バルーン収縮時には、確実に収縮する拡張補助部材を形成することができる。 According to the invention of claim 4 having the structure described above, because it is made of metal, it is possible to expand the stenotic vascular reliably, since further a shape memory alloy to maintain a predetermined shape, during balloon deflation, reliably it is possible to form the extended auxiliary member which contracts.

請求項5に係る発明は、前記第二支持部材を環状とし、前記挿通孔を円周上に等配して4個設け、バルーン外面に4本の前記拡張補助部材を等配して設ける構成としたことを特徴としている。 The invention according to claim 5, said second support member and an annular, arranged four by evenly placed the insertion holes on the circumference, is provided by arranging four said extension auxiliary member to the balloon outer surface equal configuration It is characterized in that the content was.
上記の構成を有する請求項5に係る発明によれば、狭窄血管の内部を均等に拡張することができる。 According to the invention of claim 5 having the configuration described above, can be extended equally internal narrowing blood vessels. また、それぞれの拡張補助部材が独立してスライド自在なので、屈曲した部位においても使用可能なバルーンカテーテルとなる。 Also, because slidable each extension auxiliary member is independent, it is available balloon catheter in tortuous sites.

請求項6に係る発明は、前記第二支持部材の後方に該第二支持部材と前記拡張補助部材の他端を一体的に被覆する保護カバーを装着したことを特徴としている。 The invention according to claim 6 is characterized in that wearing protection cover for covering integrally the other end of the said second support member the extension assisting member to the rear of the second support member.
上記の構成を有する請求項6に係る発明によれば、血管内を安全に挿通可能な拡張補助部材を装着したバルーンカテーテルとなり、治療後の引き抜き時にも、血管内壁を傷付けることがない。 According to the invention of claim 6 having the configuration described above, it is a balloon catheter equipped with a securely insertable extension assisting member within the vessel even when pulling after treatment, there is no damage the inner vessel wall.

請求項7に係る発明は、前記記載のカテーテル用バルーンと、カテーテルチューブとを含むバルーンカテーテルを特徴としている。 The invention according to claim 7, the balloon catheter of the described is characterized in balloon catheter comprising a catheter tube.

本発明によれば、拡張補助部材をバルーンの基端部から先端部まで延設して、基端部に設ける第一支持部材と先端部に設ける第二支持部材とで前記拡張補助部材を摺動自在に保持する構成とし、バルーンが膨張しても前記拡張補助部材がバルーンの基端部から先端部まで配設される構成としたので、屈曲した部位においても、バルーンと被拡張部との間隙に位置してバルーンの膨張と収縮に容易に追従すると共に、バルーンが規定の径よりも過度に膨張した場合にも脱落しない拡張補助部材を備えるカテーテル用バルーンを得ることができる。 According to the present invention, by extending the extension auxiliary member from the proximal end of the balloon to the tip, the extension auxiliary member in the second support member provided in the first support member and the distal end portion provided at the base end portion sliding It is configured to be held movably, since the balloon has a structure in which the expanded auxiliary member also expands is disposed from the proximal end of the balloon to the tip, even at the site where the bent, balloon and between the extended portion together are located in the gap to easily follow the expansion and contraction of the balloon, the balloon can be obtained a catheter balloon having an expansion auxiliary member not fall even when inflated excessively than the diameter defined.

以下、本発明に係るカテーテル用バルーンの実施の形態について、図面に基づいて詳細に説明する。 Hereinafter, an embodiment of a catheter balloon according to the present invention will be described in detail with reference to the drawings.
図1は、本発明に係るカテーテル用バルーン1の概略説明図であり、(a)にはバルーンが収縮した状態を示し、(b)にはバルーンが膨張した状態を示している。 Figure 1 is a schematic illustration of the catheter balloon 1 of the present invention, showing a state where the balloon is deflated in (a), showing a state in which the balloon is inflated in (b).

図1(a)に示すように、本発明に係るカテーテル用バルーン1は、カテーテルチューブ2にバルーンを備えた構成であり、バルーン3の基端部に設ける第一支持部材5と、先端部に設ける第二支持部材6を介して拡張補助部材4を装着している。 As shown in FIG. 1 (a), the catheter balloon 1 of the present invention, which includes the balloon catheter tube 2, the first support member 5 provided on the proximal end of the balloon 3, the distal end via the second supporting member 6 are fitted with expanded auxiliary member 4 provided. これらの第一支持部材5と第二支持部材6とは、共に環状の剛体製(例えば金属製)とされている。 A first supporting member 5 of the second supporting member 6, there is a both annular made rigid (e.g. metal). よって、カテーテル用バルーン1と、カテーテルチューブ2とを含む構成のバルーンカテーテルとなる。 Thus, the catheter balloon 1, the balloon catheter construction comprising a catheter tube 2.

拡張補助部材4は、前記第一支持部材5と前記第二支持部材6とで摺動自在に保持されていることが好ましい。 Extended auxiliary member 4, which is preferably slidably retained in the said first supporting member 5 and the second supporting member 6. この構成であれば、バルーン3が膨張しても前記拡張補助部材4がバルーン3から脱落することなく、バルーンの基端部から先端部まで配設される構成となり好適である。 With this configuration, without the balloon 3 is the extended auxiliary member 4 also expands from falling from the balloon 3, it is preferable be configured to be arranged from the proximal end of the balloon to the distal end.
本実施の形態においては、前記拡張補助部材4の一端を前記第一支持部材5に固定し、他端側を、前記第二支持部材6により摺動自在に保持する構成としている。 In the present embodiment, the fixed one end of the extension auxiliary member 4 to the first supporting member 5, the other end has a configuration which holds slidably by said second supporting member 6. また、前記拡張補助部材4の他端側の先端4aは前記第二支持部材6から外側に突出した長さとされている。 The other end side of the distal end 4a of the extended auxiliary member 4 has a length which projects outwardly from said second support member 6.

さらに、図1(b)に示すように、バルーン3が膨張した状態となっても、前記拡張補助部材4の先端4aが前記第二支持部材6から外側にある程度の長さとして、前記拡張補助部材4がバルーン3の基端部から先端部まで常時配設される構成としている。 Furthermore, as shown in FIG. 1 (b), even in a state in which the balloon 3 is inflated, as certain length outward from the tip 4a of the extended auxiliary member 4 is the second supporting member 6, the extension auxiliary member 4 is configured to be constantly disposed from the proximal end of the balloon 3 to the tip portion.
また、前記第二支持部材6の後方に該第二支持部材6と前記拡張補助部材4の突出部の先端4aを一体的に被覆する保護カバー7を装着している。 Also, wearing the protective cover 7 which covers integrally the tip 4a of the protruding portion of the second supporting member 6 and the expanded auxiliary member 4 behind the second support member 6. この保護カバー7の材質としてはバルーン材と同様にポリエチレン、ポリプロピレン等のポリオレフィンや、ポリ塩化ビニル、ポリウレタン、ポリアミドエラストマー等の熱可塑性エラストマー、さらに、シリコンゴムやラケックスゴム等の樹脂製のカバーが好ましい。 Similarly polyethylene and the balloon member as the material of the protective cover 7, and polyolefins such as polypropylene, polyvinyl chloride, polyurethane, thermoplastic elastomers such as polyamide elastomer, further, resin cover such as silicone rubber or Rakekkusugomu are preferred.
先端4aが第二支持部材6から突出した構成であっても、樹脂製の保護カバー7にて全体を被覆しているので、血管内を安全に挿通可能な拡張補助部材を装着したバルーンカテーテルとなり、治療後の引き抜き時にも、血管内壁を傷付けることがない。 It is configured to tip 4a protrudes from the second support member 6, so covers the whole with a resin-made protective cover 7 becomes a balloon catheter fitted with a safety insertable extension assisting member intravascularly , even when pulling after treatment, there is no damage the inner vessel wall.

上記したように、バルーン3の外面に拡張補助部材4を装着しているので、このバルーン3を血管内に挿通して膨張させると血管の狭窄部位を拡張することができる。 As described above, since the outer surface of the balloon 3 wearing the extended auxiliary member 4, the balloon 3 can be inserted to expand the stenosis Inflating vessels in the blood vessel. また、拡張補助部材4の両方の端部を支持する構成となるので、血管内で膨張・収縮を繰り返しても、拡張補助部材4が脱落することがない。 Further, since the structure for supporting the both ends of the extension auxiliary member 4, even after repeated expansion and contraction in a blood vessel, expansion auxiliary member 4 is prevented from falling off.

前記拡張補助部材4は、弾性変形可能なワイヤ製としている。 The extension auxiliary member 4 is in the elastically deformable wires made. また、その形状を図2に示すように、バルーン3に接する直線部もしくは緩やかな曲線部41と、外面に向かって鋭利に研磨された切先部42を有する形状としている。 Also, its shape as shown in FIG. 2, the straight portion or the gentle curve portion 41 contacting the balloon 3, and a shape having a cutting edge portion 42 which is sharp polished toward the outer surface. そのために、バルーン3の膨張・収縮に容易に追従すると共に、狭窄部位のバルーン3が膨張すると狭窄部位を切開するように拡張する拡張補助部材4を得ることができる。 Therefore, the easily follow the expansion and contraction of the balloon 3, it is possible to obtain an expanded auxiliary member 4 the balloon 3 of the stenosis is expanded to incise the stenosis when inflated.
また、前記拡張補助部材4はバルーン外面に複数装着することが好ましく、本実施の形態では外周部に等配して4本の拡張補助部材4を設けている。 Further, the extended auxiliary member 4 is preferably a plurality of mounting the balloon outer surface, in the present embodiment is provided with the extended auxiliary member 4 equal disposed four in the the outer peripheral portion. この装着本数は特に限定されるものでなく、1本の拡張補助部材4を装着したものでよい場合も、また6〜8本の多数本装着したバルーンを用いることも可能であるが、通常の場合ではバルーン外周に4本設ける構成とすることで、血管内の狭窄部位を拡張することができる。 The mounting number is not limited in particular, even when a single extended auxiliary member 4 may be those attached, Although it is possible to use 6-8 pieces of large number of mounting balloon, normal If the in the structure provided four the balloon outer periphery, it is possible to extend the stenosis in a blood vessel.

図3に4本の拡張補助部材4を設けた例を示している。 It shows an example in which four extended auxiliary member 4 in Figure 3. これは、第二支持部材6に4個の挿通孔6aを円周上等配に設けて、4本の拡張補助部材4をスライド自在に支持している例である。 This second supporting member 6 to the four insertion holes 6a provided in the circumferential choice distribution, an example that supports the four extended auxiliary member 4 slidably. また、これらの4本の拡張補助部材4は、それぞれが個別にスライド自在であるので、屈曲した部位においても使用可能なバルーンカテーテルとなる。 These four extended auxiliary member 4, since each can be freely individually slide, also becomes available balloon catheter in tortuous sites. さらに、狭窄血管の内部でバルーン3が膨張する動作に連動して狭窄血管の内部の四方を切開するように拡張していくので、血管を均等に拡張可能となる。 Further, since the balloon 3 inside the stenotic vessel will expand to dissect square internal narrowing vessel in conjunction with the operation of the expansion, the equally expandable vascular.
第二支持部材6は金属製であることが好ましい。 It is preferred second support member 6 is made of metal. これは、ワイヤ製の拡張補助部材4が挿通孔6a内をスライドする際に損傷されないようにするためである。 This is because the extension auxiliary member 4 wire made from being damaged when the slide in the insertion hole 6a. また、拡張補助部材4をニッケル・チタン合金製としている。 Also the extended auxiliary member 4 made of nickel-titanium alloy.
ニッケル・チタン合金製とすれば、所定の形状を維持する形状記憶合金となり、バルーン収縮時の形状を記憶させておくことができる。 If made of nickel-titanium alloy, a shape memory alloy to maintain a predetermined shape can be memorized shape at the time of balloon deflation. この構成であれば、バルーン3を膨張させる際にはその膨張力に追従して弾性変形しながら膨張し、バルーン3が収縮する際には、復元しようとする弾性力を利用して記憶された形状に容易に戻ることができ、バルーン3の収縮に応じて確実に収縮する拡張補助部材を形成することができる。 With this configuration, when inflating the balloon 3 to follow its expansion force expands while elastically deformed, when the balloon 3 is deflated is stored by utilizing the elastic force to be restored can easily return to the shape, it is possible to form the extended auxiliary member to reliably reduced with an deflation of the balloon 3. さらに、金属ワイヤ製の拡張補助部材であるので、狭窄部位を確実に拡げることができるカテーテル用バルーンとなる。 Furthermore, since the extended auxiliary member made of a metal wire, a catheter balloon which can be expanded stenosis reliably.

上記のような構成としているので、血管内の狭窄部位に、外周部に所定本数の拡張補助部材4を備えるカテーテル用バルーン1を送り込んだ後で、バルーン3を容易に膨張・収縮させることができる。 Since the configuration described above, the stenosis in a blood vessel, in After feeding catheter balloon 1 with an expansion auxiliary member 4 a predetermined number of the outer peripheral portion, the balloon 3 can be easily expanded and contracted . また、血管が屈曲した部位においても、その屈曲した形状に追従してバルーン3を容易に膨張・収縮させることができる。 Further, even at the site where the blood vessel is bent, thereby the following the bent shape of the balloon 3 easily expand and contract. さらに、バルーン3が規定の径よりも過度に膨張した場合でも、拡張補助部材4が脱落することがない。 Furthermore, even when the balloon 3 is inflated excessively than the diameter of the defined extended auxiliary member 4 is prevented from falling off.

上記したように本発明によれば、拡張補助部材をバルーンの外周の基端部から先端部まで延設して、基端部に設ける第一支持部材と先端部に設ける第二支持部材とで前記拡張補助部材を摺動自在に保持する構成とし、バルーンが膨張しても前記拡張補助部材がバルーンの基端部から先端部まで配設される構成としたので、屈曲した部位においても、バルーンと被拡張部との間隙に位置してバルーンの膨張と収縮に容易に追従すると共に、バルーンが規定の径よりも過度に膨張した場合にも脱落しない拡張補助部材を備えるカテーテル用バルーンを得ることができる。 According to the present invention as described above, by extending the extension auxiliary member from the proximal end of the outer periphery of the balloon to the distal end portion, a second supporting member provided in the first support member and the distal end portion provided at the proximal end with the expansion assist member is configured to be held slidably, since the balloon has a structure in which the expanded auxiliary member also expands is disposed from the proximal end of the balloon to the tip, even at bent portions, balloon that a well as easily follow the inflated balloon and to a retracted position in a gap between the extended portion, the balloon obtains a catheter balloon having an expansion auxiliary member that does not fall off when inflated excessively than the diameter of the defined can.

さらに、形状記憶製合金であるニッケル・チタン合金製のワイヤ状の拡張補助部材とすることで、血管内の狭窄部位を確実に拡張し、バルーンの膨張と収縮に容易に追従するように弾性変形するカテーテル用バルーンを得ることができる。 Furthermore, if a nickel-titanium alloy wire-like extension auxiliary member is a shape memory made alloy, a stenosis in a blood vessel to expand reliably elastically deformed so as to easily follow the expansion and contraction of the balloon catheter balloon can be obtained.

本発明に係るカテーテル用バルーンの一例を示す概略説明図であり、(a)にはバルーンが収縮した状態を示し、(b)にはバルーンが膨張した状態を示している。 Is a schematic diagram illustrating an example of a catheter balloon according to the present invention, showing a state where the balloon is deflated in (a), showing a state in which the balloon is inflated in (b). 拡張補助部材の一例を示す拡大断面図である。 Is an enlarged cross-sectional view showing an example of the extended auxiliary member. 第二保持部材の断面図である。 It is a cross-sectional view of the second holding member.

符号の説明 DESCRIPTION OF SYMBOLS

1 カテーテル用バルーン 3 バルーン 4 拡張補助部材 4a 先端 5 第一支持部材 6 第二支持部材 6a 挿通孔 7 保護カバー 42 切先部 Balloon 1 catheter 3 balloon 4 extend auxiliary member 4a tip 5 first support member 6 the second support member 6a insertion holes 7 protective cover 42 cutting edge portion

Claims (7)

  1. バルーン外面に狭窄部位を拡張するための拡張補助部材を有するカテーテル用バルーンであって、前記拡張補助部材をバルーンの基端部から先端部まで延設すると共に、前記基端部に設ける第一支持部材と、前記先端部に設ける第二支持部材とで、前記拡張補助部材を摺動自在に保持すると共に、前記拡張補助部材の端部を前記第一および第二支持部材の少なくとも一方から突出させて、バルーンが膨張しても前記拡張補助部材がバルーンの基端部から先端部まで配設される構成としたことを特徴とするカテーテル用バルーン。 A balloon catheter having an expandable auxiliary member for expanding the stenosis the balloon outer surface, said extension auxiliary member while extending up to the distal end portion from the proximal end of the balloon, first support provided on the base end portion and the member, with a second support member provided on the tip portion, the with the extended auxiliary member holding slidably, projecting ends of the extended auxiliary member from at least one of said first and second support members Te, catheter balloons, characterized in that the balloon is configured to the extended auxiliary member also expands is disposed from the proximal end of the balloon to the distal end.
  2. 前記第一支持部材に前記拡張補助部材の一端を固定し、前記先端部に設ける第二支持部材に前記拡張補助部材の他端側を摺動自在に保持すると共に、前記拡張補助部材の他端を前記第二支持部材から突出させたことを特徴とする請求項1に記載のカテーテル用バルーン。 Together with the said the first supporting member fixed to one end of the extension auxiliary member, for holding the other end of the extension auxiliary member to the second supporting member provided in the distal portion slidably, the other end of the extension auxiliary member the catheter balloon of claim 1, characterized in that projecting from the second supporting member.
  3. 前記拡張補助部材を、鋭利に研磨された切先部を有する弾性変形可能なワイヤ製とし、前記第二支持部材に、前記ワイヤが前記切先部を外面に向けて挿通自在となる挿通孔を設けたことを特徴とする請求項1または2に記載のカテーテル用バルーン。 Said extension auxiliary member, the sharpened polished elastically deformable wire made with cutting edge portion, the the second support member, the insertion hole through which the wire is freely inserted through the cutting edge portion toward the outer surface the catheter balloon of claim 1 or 2, characterized in that provided.
  4. 前記拡張補助部材がニッケル・チタン合金製であることを特徴とする請求項1から3のいずれかに記載のカテーテル用バルーン。 The catheter balloon according to any one of claims 1 to 3, characterized in that the extension auxiliary member is made of a nickel-titanium alloy.
  5. 前記第二支持部材を環状とし、前記挿通孔を円周上に等配して4個設け、バルーン外面に4本の前記拡張補助部材を等配して設ける構成としたことを特徴とする請求項1から4のいずれかに記載のカテーテル用バルーン。 Claims wherein the second support member and an annular, arranged four by evenly placed the insertion holes on a circumference, wherein the it has an equal arranged to provide constituting the extension auxiliary member 4 to the balloon outer surface the catheter balloon according to any one of claim 1 4.
  6. 前記第二支持部材の後方に該第二支持部材と前記拡張補助部材の他端を一体的に被覆する保護カバーを装着したことを特徴とする請求項2から5のいずれかに記載のカテーテル用バルーン。 Catheter according to any one of claims 2 to 5, characterized in that the rear of the second supporting member fitted with a protective cover for integrally covering the other end of said second support member and the expansion assist member balloon.
  7. 請求項1から6のいずれかに記載のカテーテル用バルーンと、カテーテルチューブとを含むことを特徴とするバルーンカテーテル。 A balloon catheter according to any of claims 1 to 6, a balloon catheter which comprises a catheter tube.
JP2007046168A 2007-02-26 2007-02-26 Catheter balloon Pending JP2008206702A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011245114A (en) * 2010-05-28 2011-12-08 Nipro Corp Balloon catheter
WO2012029109A1 (en) * 2010-08-30 2012-03-08 株式会社グッドマン Dilatation catheter
CN103949002A (en) * 2014-05-04 2014-07-30 广东博迈医疗器械有限公司 Single-guide wire cutting balloon catheter
KR101656494B1 (en) * 2015-03-17 2016-09-22 연세대학교 산학협력단 Rectal expansion apparatus for immobilization of prostate internal motion

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001314514A (en) * 2000-05-08 2001-11-13 Ir:Kk Through-lumen type treating tool guiding catheter
JP2004358021A (en) * 2003-06-06 2004-12-24 Riyuusaku Yamada Thrombus/atheroma removal device
JP2005538814A (en) * 2002-09-20 2005-12-22 ババリア・メデイツイーン・テヒノロギー・ゲー・エム・ベー・ハー Medical devices for administering pharmaceutical products
JP2006521877A (en) * 2003-03-31 2006-09-28 アプライド メディカル リソーシーズ コーポレイション Self-deployable catheter assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001314514A (en) * 2000-05-08 2001-11-13 Ir:Kk Through-lumen type treating tool guiding catheter
JP2005538814A (en) * 2002-09-20 2005-12-22 ババリア・メデイツイーン・テヒノロギー・ゲー・エム・ベー・ハー Medical devices for administering pharmaceutical products
JP2006521877A (en) * 2003-03-31 2006-09-28 アプライド メディカル リソーシーズ コーポレイション Self-deployable catheter assembly
JP2004358021A (en) * 2003-06-06 2004-12-24 Riyuusaku Yamada Thrombus/atheroma removal device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011245114A (en) * 2010-05-28 2011-12-08 Nipro Corp Balloon catheter
WO2012029109A1 (en) * 2010-08-30 2012-03-08 株式会社グッドマン Dilatation catheter
JP5600745B2 (en) * 2010-08-30 2014-10-01 株式会社グツドマン Dilatation catheter
CN103949002A (en) * 2014-05-04 2014-07-30 广东博迈医疗器械有限公司 Single-guide wire cutting balloon catheter
KR101656494B1 (en) * 2015-03-17 2016-09-22 연세대학교 산학협력단 Rectal expansion apparatus for immobilization of prostate internal motion

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