JPH02279165A - Releasing type balloon catheter - Google Patents

Releasing type balloon catheter

Info

Publication number
JPH02279165A
JPH02279165A JP1100099A JP10009989A JPH02279165A JP H02279165 A JPH02279165 A JP H02279165A JP 1100099 A JP1100099 A JP 1100099A JP 10009989 A JP10009989 A JP 10009989A JP H02279165 A JPH02279165 A JP H02279165A
Authority
JP
Japan
Prior art keywords
balloon
connecting member
catheter
cuttable
cutting
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
Application number
JP1100099A
Other languages
Japanese (ja)
Other versions
JP2536923B2 (en
Inventor
Nobunori Usami
信乃 宇佐美
Kiyoshi Asai
潔 浅井
Shuji Isozaki
修二 磯崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DuPont Toray Specialty Materials KK
Original Assignee
Dow Corning Asia Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Corning Asia Ltd filed Critical Dow Corning Asia Ltd
Priority to JP1100099A priority Critical patent/JP2536923B2/en
Publication of JPH02279165A publication Critical patent/JPH02279165A/en
Application granted granted Critical
Publication of JP2536923B2 publication Critical patent/JP2536923B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To detain a balloon in a state without any protruding object by injecting a setting liquid into the balloon consisting of a main body and a cylindrical part for connection provided toward inner direction of the main body and having a cutting means at a position adjacent an external opening formed by the cylindrical part. CONSTITUTION:A releasing type balloon catheter is inserted into a blood vessel and led in until a balloon 3 arrives at a part requiring treatment. Then, curing liquid 7 is charged from an external part through the main body 1 of the catheter and a cutting type connecting member 2 to the balloon 3 and the main body 35 of the balloon is expanded. Then the liquid is cured and an aneurysm, for example, is blocked. The cutting means is composed of ring-shaped electrodes 51 and 52, which are provided on the outer peripheral surface of the cutting type connecting member 2, and lead wires 53 and 54 to impress high frequency voltages. When the cutting type connecting member 2 is cut by the cutting means, the front end part 21 of the cutting type connecting member 2 remains in a cylindrical part 36 for connection to be immersed in the balloon 3 and the balloon is detained in the state that any large protruding object does not exist.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、血管内手術法、特に動静脈屡や動脈瘤などの
塞栓術に好適に用いることのできる離脱型バルーンカテ
ーテルに関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a removable balloon catheter that can be suitably used for endovascular surgery, particularly for embolization of arteriovenous masses, aneurysms, and the like.

〔発明の背景〕[Background of the invention]

カテーテルは、医療器具として広く用いられ、診断およ
び治療において極めて有用なものであるが、最近におい
て、カテーテルの先端に充填用液体が注入されることに
より膨張するバルーンを接続してなる、いわゆるバルー
ンカテーテルが開発されている。このバルーンカテーテ
ルによれば、従来のバルーンを有しないカテーテルによ
っては実施することができなかった治療あるいは処置を
行うことが可能である。
Catheters are widely used as medical devices and are extremely useful in diagnosis and treatment, but recently, so-called balloon catheters have been developed, which are made by connecting a balloon that expands when a filling liquid is injected to the tip of the catheter. is being developed. According to this balloon catheter, it is possible to perform treatments or procedures that could not be performed using conventional catheters without balloons.

例えば血管に生じた孔を閉塞するための手術法において
、バルーンカテーテルを血管内の閉塞すべき位置にまで
導入し、バルーンに充填用液体を注入して膨張させるこ
とにより、当該孔の閉塞を達成することができる。
For example, in a surgical method to close a hole in a blood vessel, a balloon catheter is introduced into the blood vessel to the position to be closed, and the balloon is inflated by injecting a filling liquid to achieve the blockage of the hole. can do.

また、このようなバルーンカテーテルの一種として、膨
張されたバルーンが離脱されてそのままの状態で留置さ
れ、従って当該バルーンによって達成された閉塞状態を
比較的長い期間にわたって維持することのできる離脱型
バルーンカテーテルが知られている。
Furthermore, as a type of such balloon catheter, there is a removable balloon catheter in which the inflated balloon is removed and left in that state, and therefore the occlusion state achieved by the balloon can be maintained for a relatively long period of time. It has been known.

この離脱型バルーンカテーテルは、一般に、カテーテル
本体とバルーンとが切断性接続部材により接続されると
共に、当該切断性接続部材にこれを切断する適宜の切断
手段が設けられて構成されている。例えば従来のバルー
ンカテーテルの一例においては、第4図に示すように、
カテーテル本体1の前端に筒状の切断性接続部材2の後
端25が当接された状態でこれら両者間にわたって伸び
るよう筒状のコネクタ41が圧入され、これによりカテ
ーテル本体1と切断性接続部材2とが接続される。一方
、バルーン3においては外方に突出する接続用筒状部3
1が形成されており、この接続用筒状部31内に、内部
に筒状のコネクタ42が挿入された切断性接続部材2の
前端部分21が圧入されており、これによって切断性接
続部材2にバルーン3が接続され、その上で、前記切断
性接続部材2におけるバルーン3に接近した位置に切断
手段が設けられている。
This detachable balloon catheter is generally configured such that the catheter body and the balloon are connected by a cuttable connecting member, and the cuttable connecting member is provided with an appropriate cutting means for cutting the disconnectable connecting member. For example, in an example of a conventional balloon catheter, as shown in FIG.
With the rear end 25 of the cylindrical cuttable connecting member 2 in contact with the front end of the catheter body 1, the cylindrical connector 41 is press-fitted so as to extend between the two, thereby connecting the catheter body 1 and the cuttable connecting member 2. 2 is connected. On the other hand, in the balloon 3, the connecting cylindrical part 3 protrudes outward.
1 is formed, and the front end portion 21 of the cuttable connecting member 2, into which the cylindrical connector 42 is inserted, is press-fitted into the connecting cylindrical portion 31. A balloon 3 is connected to the balloon 3 , and a cutting means is provided at a position close to the balloon 3 on the cuttable connecting member 2 .

図示の例における切断手段は、切断性接続部材2の外周
面上に、一対の長さ方向に離間して設けられたリング状
電極51.52 と、これらリング状電極51.52に
高周波電圧を印加するためのリード線53、54 とよ
りなり、これらリード線53.54は、図では省略され
ているが、前記カテーテル本体1内の空間11内を通っ
て外部にまで伸びるよう設けられている。この切断手段
によれば、リング状電極51、52間に高周波電圧を印
加することによってリング状電極51.52間に位置す
る切断性接続部材2の部分を発熱溶融させ、これによっ
て当該切断性接続部材2を切断する手段である。この切
断手段は特公昭6O−3022fi号公報に開示されて
いる。
The cutting means in the illustrated example includes a pair of ring-shaped electrodes 51.52 provided on the outer peripheral surface of the cuttable connecting member 2, spaced apart in the length direction, and a high-frequency voltage applied to these ring-shaped electrodes 51.52. These lead wires 53 and 54 are provided to extend to the outside through the space 11 within the catheter body 1, although these lead wires 53 and 54 are not shown in the figure. . According to this cutting means, by applying a high frequency voltage between the ring-shaped electrodes 51 and 52, the portion of the cuttable connection member 2 located between the ring-shaped electrodes 51 and 52 is heated and melted, thereby causing the cuttable connection to be made. This is means for cutting the member 2. This cutting means is disclosed in Japanese Patent Publication No. 6O-3022fi.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、このような構成のバルーンカテーテルに
おいては、切断性接続部材2が切断された状態でバルー
ン3の接続用筒状部31がなお外方に突出する状態のま
ま体内に留置されることとなるため、人体に重大な支障
を生じさせるおそれが大きい。すなわち、当該バルーン
カテーテルを例えば動WCmの塞栓術に用いた場合には
、接続用筒状部31が動脈瘤の部位から血管の血流通路
部分内に突入された状態となり易く、このため当該血管
内の血流が阻害されて血流■が減少するために先端細胞
の異状や血栓が生じ、また当該血管の閉塞が生ずるおそ
れがある。
However, in a balloon catheter having such a configuration, the connecting cylindrical portion 31 of the balloon 3 is left in the body with the connecting cylindrical portion 31 still protruding outward when the disconnectable connecting member 2 is cut. Therefore, there is a high risk of causing serious harm to the human body. That is, when the balloon catheter is used, for example, in embolization of WCm, the connecting cylindrical portion 31 tends to be inserted into the blood flow path of the blood vessel from the aneurysm site, and therefore Blood flow within the blood vessel is obstructed and blood flow (2) decreases, leading to abnormalities in the tip cells and thrombus, and occlusion of the blood vessel.

本発明は以上の如き事情に基いてなされたものであって
、その目的は、バルーンにおいて接続用筒状部が外方に
突出することがなく、従って大きな突出物が存在しない
状態でバルーンを留置させることのできる離脱型バルー
ンカテーテルを提供することにある。
The present invention has been made based on the above-mentioned circumstances, and its object is to prevent the connecting cylindrical portion of the balloon from protruding outward, and therefore to allow the balloon to be indwelled without any large protrusions. An object of the present invention is to provide a removable balloon catheter that can be used in a variety of ways.

〔課題を解決するための手段〕[Means to solve the problem]

本発明に係る離脱型バルーンカテーテルは、カテーテル
本体と、このカテーテル本体の前端に筒状の切断性接続
部材を介して接続されたバルーンと、前記切断性接続部
材に設けた、当該切断性接続部材を切断して前記バルー
ンを分離するための切断手段とを有してなる離脱型バル
ーンカテーテルにふいて、 前記バルーンは、バルーン本体と、このバルーン本体の
内方に没入するよう形成された接続用筒状部とを有して
なり、 前記切断性接続部材の前端部分が前記バルーンの接続用
筒状部内に挿入されて固定されると共に前記カテーテル
本体の前端に前記切断性接続部材の後端が接続され、 前記切断手段は、前記バルーンにおける接続用筒状部に
よる外部開口に接近した位置に設けられており、 前記カテーテル本体を介して前記バルーン内に硬化性液
体が注入されることを特徴とする。
A detachable balloon catheter according to the present invention includes a catheter main body, a balloon connected to the front end of the catheter main body via a cylindrical cuttable connecting member, and a cuttable connecting member provided on the cuttable connecting member. a detachable balloon catheter having a cutting means for separating the balloon by cutting the balloon; a cylindrical portion, the front end portion of the cuttable connecting member is inserted into and fixed within the connecting cylindrical portion of the balloon, and the rear end of the cuttable connecting member is provided at the front end of the catheter body. connected, the cutting means is provided at a position close to the external opening of the connecting cylindrical part of the balloon, and a hardening liquid is injected into the balloon through the catheter body. do.

〔発明の具体的構成〕[Specific structure of the invention]

以下、図面によって本発明の具体的構成の一実施例を説
明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a specific configuration of the present invention will be described below with reference to the drawings.

本発明に係る離脱型バルーンカテーテルの一例において
は、第1図に示すように、基本的に、カテーテル本体1
と、切断性接続部材2と、この切断性接続部材2を介し
て接続されたバルーン3と、切断手段とよりなる。
In an example of a removable balloon catheter according to the present invention, as shown in FIG.
, a cuttable connecting member 2, a balloon 3 connected via the cuttable connecting member 2, and a cutting means.

カテーテル本体1の前端には切断性接続部材2の後端2
5が当接され、この状態でこれら両者間にわたって伸び
るよう例えばフッ素樹脂、ポリエチレンなどよりなる筒
状のコネクタ41が挿入され、更にこのコネクタ41の
両端部上の位置において、カテーテル本体1および切断
性接続部材2が、内部のコネクタ41に対してそれぞれ
の外周面から結紮糸61および62によって結紮されて
おり、これによってカテーテル本体1と切断性接続部材
2とが接続されている。
A rear end 2 of a cuttable connecting member 2 is attached to the front end of the catheter body 1.
5 are in contact with each other, and in this state, a cylindrical connector 41 made of, for example, fluororesin, polyethylene, etc. is inserted so as to extend between the two, and further, at positions above both ends of this connector 41, the catheter body 1 and the cuttable The connecting member 2 is ligated from the outer peripheral surface of the internal connector 41 with ligatures 61 and 62, thereby connecting the catheter main body 1 and the cuttable connecting member 2.

以上において、カテーテル本体lはその内部に空間11
を有する長尺なチューブ状である。このカテーテル本体
1は、その全体が同一の材質によって一体的に形成され
たものであっても、また異なる材質によるチューブが順
次に接続されて形成されたものであってもよい。このカ
テーテル本体1の構成材料としては、例えばシリコーン
ゴム、ナイロンなどのポリアミド樹脂、ポリエチレン、
ウレタンゴム、フッ素樹脂などを挙げることができる。
In the above, the catheter body l has a space 11 inside.
It has a long tube shape. The catheter main body 1 may be integrally formed entirely of the same material, or may be formed by sequentially connecting tubes made of different materials. The catheter body 1 is made of, for example, silicone rubber, polyamide resin such as nylon, polyethylene,
Examples include urethane rubber and fluororesin.

このカテーテル本体1の寸法は、特に限定されるもので
はないが、具体的−例において、内径は0.1〜1.O
++++n程度、外径は0.4〜2.Omm程度、肉厚
は0.1〜1.0mm程度、長さは30〜200cm程
度である。
The dimensions of this catheter body 1 are not particularly limited, but in a specific example, the inner diameter is 0.1-1. O
+++++n degree, outer diameter 0.4~2. The thickness is about 0.1 to 1.0 mm, and the length is about 30 to 200 cm.

また、切断性接続部材2の形状および寸法も特に限定さ
れるものではないが、具体的−例において、内径は0.
3−1.4mm程度、外径は0.4〜1.51T1m程
度、肉厚は0.1〜1. Omm程度、長さは3〜20
mm程度である。
Further, the shape and dimensions of the cuttable connecting member 2 are not particularly limited, but in a specific example, the inner diameter is 0.
Approximately 3-1.4mm, outer diameter is approximately 0.4-1.51T1m, and wall thickness is 0.1-1. Approximately 0mm, length is 3~20
It is about mm.

一方、バルーン3は、バルーン本体35ト、このバルー
ン本体35内に没入するよう、従って当該バルーン本体
35の内側に向かって突出するよう形成された接続用筒
状部36とにより構成されている。
On the other hand, the balloon 3 is composed of a balloon body 35 and a connecting cylindrical portion 36 formed so as to be immersed in the balloon body 35 and thus to protrude toward the inside of the balloon body 35.

37はバルーン本体35の前端に設けられた造影用金属
チップである。そして、前記切断性接続部材2の@端部
分21の内部に、例えばフッ素lit脂、ポリエチレン
などよりなる筒状のコネクタ42が挿入され、この切断
性接続部材2の前端部分21が接続用筒状B36内に挿
入され、更にこの状態で結紮糸63によって結紮される
ことにより、当該切断性接続部材2にバルーン3が接続
されている。
37 is a metal tip for contrast provided at the front end of the balloon body 35. Then, a cylindrical connector 42 made of, for example, fluorine-lit resin or polyethylene is inserted into the @ end portion 21 of the cuttable connecting member 2, and the front end portion 21 of the cuttable connecting member 2 has a cylindrical shape for connection. The balloon 3 is connected to the cuttable connecting member 2 by being inserted into the B 36 and further ligated with the ligature 63 in this state.

また、図示の例における切断手段は、切断性接続部材2
の外周面上において、一対の長さ方向に難問して設けら
れたリング状電極51.52 と、これろリング状電極
51.52に高周波電圧を印加するためのリード線53
.54 とにより構成されている。これらリード線53
.54は、図では省略されているが、前記カテーテル本
体1内の空間11を通って外部に導出されて高周波電圧
源装置(図示せず)に接続される。更にバルーン3側の
リング状電極51は、切断性接続部材2上においてバル
ーン3に接近した位置、すなわち接続用筒状部36によ
ってバルーン本体35に形成される外部開口の縁部38
に隣接した位置に配置されている。
Further, the cutting means in the illustrated example is the cuttable connecting member 2
A pair of ring-shaped electrodes 51.52 are provided on the outer peripheral surface of the ring-shaped electrodes 51.52, and a lead wire 53 is used to apply a high-frequency voltage to the ring-shaped electrodes 51.52.
.. 54. These lead wires 53
.. Although not shown in the figure, the reference numeral 54 is led out through the space 11 within the catheter body 1 and connected to a high-frequency voltage source (not shown). Further, the ring-shaped electrode 51 on the balloon 3 side is located close to the balloon 3 on the cuttable connecting member 2, that is, at the edge 38 of the external opening formed in the balloon body 35 by the connecting cylindrical part 36.
is located adjacent to.

上記リング状電極51.52は、例えば銅、ステンレス
鋼、白金、銀、銅などよりなる、直径0,01〜0.1
ff111程度の金属ワイアを巻回して形成することが
できるが、特にバルーン3側のリング状電極51の幅d
1は、カテーテル本体1側のリング状電極52の幅d2
より、例えば1/2程度小さいことが好ましい。
The ring-shaped electrode 51.52 is made of copper, stainless steel, platinum, silver, copper, etc., and has a diameter of 0.01 to 0.1.
It can be formed by winding a metal wire of about ff111, but especially the width d of the ring-shaped electrode 51 on the balloon 3 side
1 is the width d2 of the ring-shaped electrode 52 on the catheter main body 1 side.
For example, it is preferable to be about 1/2 smaller.

このように、切断手段として溶融手段を採用する場合に
おける前記切断性接続部材2の材質としては、例えばポ
リビニルアルコール、ポリカプロラクトン、トランスイ
ソプレンなどを好ましいものとして用いることができる
As described above, when a melting means is employed as the cutting means, the material of the cuttable connecting member 2 may preferably be, for example, polyvinyl alcohol, polycaprolactone, transisoprene, or the like.

バルーン3において、バルーン本体35は全体が楕円球
状であり、その後端には前記接続用筒状部36による外
部開口が形成され、前端は閉じられていて例えば造影用
金属チップ37が必要に応じて埋設されている。このバ
ルーン3の構成材料としては、例えばシリコーンゴム、
天然ゴムラテックスなどを好ましく用いることができる
In the balloon 3, the balloon main body 35 has an elliptical spherical shape as a whole, and an external opening is formed at the rear end by the connecting cylindrical part 36, and the front end is closed, and a metal tip 37 for contrast, for example, is inserted as needed. It is buried. Examples of the constituent material of this balloon 3 include silicone rubber,
Natural rubber latex or the like can be preferably used.

このバルーン3の形状および寸法は、当該バルーンカテ
ーテルの使用目的などに応じて適宜選定され、楕円球状
ではなくて例えば前端が閉塞された円筒状であってもよ
い。その寸法も特に限定されるものではないが、楕円球
状とされる場合の具体的−例において、最大内径は0.
2〜3.0mm程度、最大外径は0.5〜4. Qmm
程度、肉厚は0.05〜0.5mm程度、長さは1.0
〜15mm程度である。
The shape and dimensions of the balloon 3 are appropriately selected depending on the intended use of the balloon catheter, and may be, for example, cylindrical with a closed front end instead of an ellipsoidal shape. Its dimensions are not particularly limited either, but in a specific example of an ellipsoidal shape, the maximum inner diameter is 0.
Approximately 2 to 3.0 mm, maximum outer diameter is 0.5 to 4. Qmm
The thickness is about 0.05 to 0.5 mm, and the length is 1.0 mm.
It is about 15 mm.

本発明の離脱型バルーンカテーテルは、例えば次のよう
にして好適に製造することができる。すなわち、第2図
(イ)に示すように、接続用筒状部36が従来と同様に
バルーン体35Aの一端より外方に突出するバルーン材
3Aを製作し、前端部分21内にコネクタ42が挿入さ
れた切断性接続部材2を、その後端25を先頭にして前
記接続用筒状部36内にその外端(最終的にはバルーン
本体35内に位置されて内端となる)の開口39から挿
入してその前端までの全体を押入し、これによって当該
切断性接続部材2の後端25がバルーン材3A内に突入
された状態とし、接続用筒状部36の外周から結紮糸6
3によって結紮する。その後、バルーン材3Aの接続用
筒状部36とは反対側である他端40の一部を切開し、
形成されるスリブ)Sを拡開し更に接続用筒状部36以
外のバルーン体35Aのバルーン膜を反転させることに
より、第2図(ロ)に示すように、表裏面が逆のバルー
ン状で接続用筒状部36の後端25が露出された状態と
なし、この状態で前記スリットSを適当な接着剤、例え
ばシリコーンゴム系接着剤などによって封鎖する。
The removable balloon catheter of the present invention can be suitably manufactured, for example, as follows. That is, as shown in FIG. 2(a), a balloon material 3A is manufactured in which the connecting cylindrical portion 36 protrudes outward from one end of the balloon body 35A, as in the conventional case, and a connector 42 is installed within the front end portion 21. The inserted cuttable connecting member 2 is inserted into the connecting cylindrical portion 36 with its rear end 25 leading from the opening 39 at its outer end (which will eventually be located within the balloon body 35 and become the inner end). The cutting end 25 of the cutting connection member 2 is pushed into the balloon material 3A, and the ligature 6 is inserted from the outer periphery of the connection tubular part 36.
Ligate by 3. After that, a part of the other end 40 of the balloon material 3A opposite to the connecting cylindrical part 36 is cut out,
By expanding the formed sleeve) S and further inverting the balloon membrane of the balloon body 35A other than the connecting cylindrical part 36, a balloon shape with the front and back surfaces reversed is formed as shown in FIG. 2 (b). The rear end 25 of the connecting cylindrical portion 36 is exposed, and in this state the slit S is sealed with a suitable adhesive, such as a silicone rubber adhesive.

このようにして、第2図(ハ)に示すように、前記接続
用筒状部36内に切断性接続部材2の前端部分21が挿
入されて固定されてふり、かつ当該接続用筒状部36が
バルーン本体35内に没入した状態とされている、バル
ーン3と切断性接続部材2との結合体Cが得られる。従
って、この結合体Cの切断性接続部材2の後端25にコ
ネクタ41を介してカテーテル本体1の前端を接続し、
切断手段を設けることによって本発明に係る離脱型バル
ーンカテーテルが製造される。
In this way, as shown in FIG. 2(c), the front end portion 21 of the cuttable connecting member 2 is inserted and fixed into the connecting cylindrical portion 36, and the connecting cylindrical portion A combined body C of the balloon 3 and the cuttable connecting member 2 is obtained, in which the balloon 36 is immersed in the balloon body 35. Therefore, the front end of the catheter body 1 is connected to the rear end 25 of the cuttable connecting member 2 of this combined body C via the connector 41,
A detachable balloon catheter according to the present invention is manufactured by providing a cutting means.

このような製造方法によれば、バルーン3の接続用筒状
部36がバルーン本体35内に没入する状態でありなが
ら、結紮糸63による結紮が可能であるため、当該接続
用筒状部36と切断性接続部材2の前端部分21とを十
分強固に接続することができるので、好ましい。
According to such a manufacturing method, it is possible to perform ligation using the ligature 63 while the connecting tubular part 36 of the balloon 3 is recessed into the balloon body 35, so that the connecting tubular part 36 and This is preferable because the front end portion 21 of the cuttable connecting member 2 can be connected sufficiently firmly.

本発明の離脱型バルーンカテーテルは、以上に述べた方
法以外の方法によっても製造することができる。
The removable balloon catheter of the present invention can be manufactured by methods other than those described above.

好適な他の製造方法の例を第1図の構成に従って説明す
ると、この方法においては、従来のバルーン3における
接続用筒状部31と同様に、バルーン体の一端より外方
に突出する接続用筒状部形成部分を有するバルーン材を
用いる。そして、切断性接続部材2のコネクタ42が挿
入されている前端部分21を先頭にしてこれを当該接続
用筒状部形成部分の外端開口縁に押し当て、更に接続用
筒状部形成部分の弾性を利用して当該接続用筒状部形成
部分をその外端から内方に反転させながらその内部に切
断性接続部材2を押入して行き、これによって接続用筒
状部形成部分の全部を反転させてバルーン本体35内に
突入させ、斯くして接続用筒状81iS36を形成する
と同時に、この接続用筒状部36内に切断性接続部材2
の前端部分21が圧入されその後端がバルーン本体35
より突出した状態とする。
An example of another preferred manufacturing method will be described according to the structure shown in FIG. A balloon material having a cylindrical portion is used. Then, with the front end portion 21 of the disconnectable connecting member 2 into which the connector 42 is inserted first, it is pressed against the outer end opening edge of the connecting cylindrical portion forming portion. Using elasticity, push the cuttable connecting member 2 into the inside of the connecting cylindrical part forming part while inverting it inward from its outer end, thereby cutting off the entire connecting cylindrical part forming part. It is inverted and inserted into the balloon main body 35, thus forming the connecting cylindrical part 81iS36, and at the same time inserting the cuttable connecting member 2 into this connecting cylindrical part 36.
The front end portion 21 of the balloon is press-fitted, and the rear end is the balloon body 35.
Make it more prominent.

このような方法により、第2図〈ハ)に示した結合体C
と殆ど同じ構成を有するバルーン3と切断性接続部材2
との結合体を好適に製造することができ、従って切断性
接続部材2の後端にカテーテル本体1を接続すればよい
By such a method, the combined body C shown in FIG.
Balloon 3 and cuttable connecting member 2 having almost the same configuration as
Therefore, it is sufficient to connect the catheter main body 1 to the rear end of the cuttable connecting member 2.

この方法を利用する場合においては、接続用筒状部形成
部分の外周表面が反転によって接続用筒状部36の内周
表面となり、これに切断性接続部材2の前端部分21の
外周表面が接合されることとなる。従って、必要があれ
ば、この両者の接合領域に適当な接着剤を塗布しておく
ことにより、結紮糸を用いなくとも、両者を十分強固に
固定することができる。
When using this method, the outer circumferential surface of the connecting cylindrical portion forming portion becomes the inner circumferential surface of the connecting cylindrical portion 36 by inversion, and the outer circumferential surface of the front end portion 21 of the cuttable connecting member 2 is joined to this. It will be done. Therefore, if necessary, by applying a suitable adhesive to the joint area between the two, it is possible to fix the two sufficiently firmly without using a ligature.

以上の実施例においては、切断性接続部材2とバルーン
3との接続のためにコネクタ42が使用されているが、
このコネクタ42は、その全体がバル−ン本体35の内
部に存在することが好ましい。
In the above embodiments, the connector 42 is used to connect the cuttable connecting member 2 and the balloon 3.
Preferably, the connector 42 is entirely inside the balloon body 35.

〔発明の作用および効果〕[Operation and effects of the invention]

以上のような構成を有する離脱型バルーンカテーテルは
、例えば患者の血管内に挿入されてバルーン3が処置を
要する部位に到達するまで導入され、この状態で、外部
からカテーテル本体1および切断性接続部材2を介して
硬化性液体がバルーン3内に充填されてバルーン本体3
5が膨張し、この状態で充填された液体が硬化され、こ
れによって例えば動脈瘤が閉塞される。その後、切断手
段によって切断性接続部材2が切断され、第3図に示す
ように、硬化液体7が充満されたバルーン3が離脱され
て留置される。
The removable balloon catheter having the above configuration is inserted, for example, into a blood vessel of a patient until the balloon 3 reaches a site requiring treatment, and in this state, the catheter body 1 and the cuttable connecting member are removed from the outside. A hardening liquid is filled into the balloon 3 through the balloon body 3 through the balloon body 3.
5 expands, and in this state the filled liquid hardens, thereby occluding, for example, an aneurysm. Thereafter, the cuttable connecting member 2 is cut by the cutting means, and the balloon 3 filled with the hardening liquid 7 is removed and left in place, as shown in FIG.

而して、本発明の離脱型バルーンカテーテルによれば、
カテーテル本体に接続された切断性接続部材はその前端
部分がバルーンに接続されているが、バルーンにおいて
当該切断性接続部材の前端部分が挿入される接続用筒状
部はバルーン本体の内方に没入するよう形成されており
、しかも切断手段は切断性接続部材にふいて前記接続用
筒状部による外部開口に接近した位置に設けられている
ため、当該切断手段によって切断性接続部材を切断する
と、当該切断性接続部材の前端部分は、バルーン内に没
入する接続用筒状部内に残留することとなり、従って大
きな突出物が何も存在しない状態でバルーンを離脱させ
て留置させることができる。その結果、例えばバルーン
の一部が動脈瘤の部位から血管の血流通路内に突入する
ようなことがなく、血流量の減少による先端細胞の壊死
、その他の障害や血栓による血管の閉塞などが生ずるお
それがない。
According to the removable balloon catheter of the present invention,
The front end portion of the cuttable connecting member connected to the catheter body is connected to the balloon, but the connecting cylindrical portion of the balloon into which the front end portion of the cuttable connecting member is inserted is recessed inside the balloon body. In addition, since the cutting means is provided at a position close to the external opening of the connecting tubular part when wiping the cutting member, when the cutting means cuts the cutting member, The front end portion of the cuttable connecting member remains within the connecting cylindrical portion that is submerged into the balloon, so that the balloon can be removed and left in place without any large protrusions. As a result, for example, part of the balloon does not enter the blood flow path of the blood vessel from the aneurysm site, and this prevents necrosis of the tip cells due to decreased blood flow, other disorders, and blood vessel occlusion due to blood clots. There is no risk of this occurring.

以上、本発明の一実施例について説明したが、本発明に
おいては、種々の変更を加えることが可能である。例え
ば、切断手段としては図示の例におけるように切断性接
続部材を加熱溶融して切断する手段以外に、カテーテル
本体を捩じる力を作用させるなどの機械的力により切断
する手段、あるいは切断性接続部材とバルーンとを嵌合
して接続する構成とした場合には、当該嵌合状態を解除
する手段などの種々の手段を利用することができる。こ
れらの場合にも、上記の実施例と同様の効果を得ること
ができる。
Although one embodiment of the present invention has been described above, various modifications can be made to the present invention. For example, as a cutting means, in addition to heating and melting the cutting connection member as in the example shown in the figure, cutting means using mechanical force such as applying a twisting force to the catheter body, or cutting When the connecting member and the balloon are connected by fitting together, various means can be used, such as means for releasing the fitted state. In these cases as well, effects similar to those of the above embodiments can be obtained.

また、切断性接続部材の接続のためのコネクタま必須の
ものではなく、例えば切断性接続部材の材質あるいは接
続の態様によっては、コネクタを不要とすることもでき
る。
Further, a connector for connecting the cuttable connecting member is not essential, and depending on the material of the cuttable connecting member or the manner of connection, for example, the connector may be omitted.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係る離脱型バルーンカテーテルの一例
の構成の概略を示す説明用縦断正面図、第2図(イ)〜
第2図(ハ)は本発明離脱型バルーンカテーテルの好ま
しい製造方法についての説明用断面図、第3図は第1図
のバルーンカテーテルによる離脱されたバルーンの状態
を示す説明用縦断正面図、第4図は従来の離脱型バルー
ンカテーテルを示す説明用縦断正面図である。 1・・・カテーテル本体  2・・・切断性接続部材2
1・・・前端部分     25・・・後端3・・・バ
ルーン     31・・・接続用筒状部35・・・バ
ルーン本体   36・・・接続用筒状部37・・・造
影用金属チップ 38・・・#R1!1IS39・・・
開口 51、52・・・リング状電極 61、62.63・・・結紮糸 35A・・・バルーン体 C・・・結合体 41、42・・・コネクタ 53、54・・・リード線 3A・・・バルーン材 S・・・スリット 7・・・硬化液体 + 図 + 図 +4図 十 図 (イ) + 図(ロ) 十 図(ハ)
FIG. 1 is an explanatory longitudinal sectional front view showing an outline of the configuration of an example of a removable balloon catheter according to the present invention, and FIGS.
FIG. 2(C) is an explanatory cross-sectional view of a preferable manufacturing method of the removable balloon catheter of the present invention, FIG. FIG. 4 is an explanatory longitudinal sectional front view showing a conventional removable balloon catheter. 1... Catheter body 2... Cuttable connection member 2
1... Front end portion 25... Back end 3... Balloon 31... Connection cylindrical part 35... Balloon body 36... Connection cylindrical part 37... Metal tip for contrast imaging 38 ...#R1!1IS39...
Openings 51, 52...Ring-shaped electrodes 61, 62, 63...Ligature 35A...Balloon body C...Combined bodies 41, 42...Connectors 53, 54...Lead wire 3A...・Balloon material S...Slit 7...Curing liquid + Fig. + Fig. + 4 Fig. 10 Fig. (a) + Fig. (b) Fig. 10 (c)

Claims (1)

【特許請求の範囲】 1)カテーテル本体と、このカテーテル本体の前端に筒
状の切断性接続部材を介して接続されたバルーンと、前
記切断性接続部材に設けた、当該切断性接続部材を切断
して前記バルーンを分離するための切断手段とを有して
なる離脱型バルーンカテーテルにおいて、 前記バルーンは、バルーン本体と、このバルーン本体の
内方に没入するよう形成された接続用筒状部とを有して
なり、 前記切断性接続部材の前端部分が前記バルーンの接続用
筒状部内に挿入されて固定されると共に前記カテーテル
本体の前端に前記切断性接続部材の後端が接続され、 前記切断手段は、前記バルーンにおける接続用筒状部に
よる外部開口に接近した位置に設けられており、 前記カテーテル本体を介して前記バルーン内に硬化性液
体が注入されることを特徴とする離脱型バルーンカテー
テル。
[Claims] 1) A catheter body, a balloon connected to the front end of the catheter body via a cylindrical cuttable connection member, and a cuttable connection member provided on the cuttable connection member that is cut off. and a cutting means for separating the balloon, the balloon comprising: a balloon body; and a connecting cylindrical part formed to be immersed inside the balloon body; The front end portion of the cuttable connecting member is inserted into and fixed in the connecting cylindrical portion of the balloon, and the rear end of the cuttable connecting member is connected to the front end of the catheter body, and the A detachable balloon, characterized in that the cutting means is provided at a position close to the external opening of the connecting cylindrical part of the balloon, and a hardening liquid is injected into the balloon through the catheter body. catheter.
JP1100099A 1989-04-21 1989-04-21 Detachable balloon catheter Expired - Lifetime JP2536923B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1100099A JP2536923B2 (en) 1989-04-21 1989-04-21 Detachable balloon catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1100099A JP2536923B2 (en) 1989-04-21 1989-04-21 Detachable balloon catheter

Publications (2)

Publication Number Publication Date
JPH02279165A true JPH02279165A (en) 1990-11-15
JP2536923B2 JP2536923B2 (en) 1996-09-25

Family

ID=14264953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1100099A Expired - Lifetime JP2536923B2 (en) 1989-04-21 1989-04-21 Detachable balloon catheter

Country Status (1)

Country Link
JP (1) JP2536923B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210025397A (en) * 2019-08-27 2021-03-09 한양대학교 산학협력단 Drug delivery device and drug delivery method using the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55133265A (en) * 1979-04-06 1980-10-16 Kuraray Co Desorption type balloon catheter
JPS5643962A (en) * 1979-09-14 1981-04-22 Kuraray Co Inductor which its nose has detained member in living body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55133265A (en) * 1979-04-06 1980-10-16 Kuraray Co Desorption type balloon catheter
JPS5643962A (en) * 1979-09-14 1981-04-22 Kuraray Co Inductor which its nose has detained member in living body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210025397A (en) * 2019-08-27 2021-03-09 한양대학교 산학협력단 Drug delivery device and drug delivery method using the same

Also Published As

Publication number Publication date
JP2536923B2 (en) 1996-09-25

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