JPH01238874A - Inductor capable of separating storage member in vivo from its tip - Google Patents
Inductor capable of separating storage member in vivo from its tipInfo
- Publication number
- JPH01238874A JPH01238874A JP63065085A JP6508588A JPH01238874A JP H01238874 A JPH01238874 A JP H01238874A JP 63065085 A JP63065085 A JP 63065085A JP 6508588 A JP6508588 A JP 6508588A JP H01238874 A JPH01238874 A JP H01238874A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- balloon
- electrodes
- catheter
- tip
- 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
- 238000001727 in vivo Methods 0.000 title abstract description 7
- 239000011888 foil Substances 0.000 abstract description 18
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 18
- 210000004204 blood vessel Anatomy 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 208000022211 Arteriovenous Malformations Diseases 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000005744 arteriovenous malformation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 208000019553 vascular disease Diseases 0.000 description 4
- 231100000216 vascular lesion Toxicity 0.000 description 4
- 206010002329 Aneurysm Diseases 0.000 description 3
- 206010003226 Arteriovenous fistula Diseases 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 206010059245 Angiopathy Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000003560 cancer drug Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、先端に離脱型の生体内留置部材を有する誘導
子に関するもので、特に動脈瘤、動静脈奇形、動静脈ろ
う、癌等の閉塞治療に用いるのに好適な離脱型バルーン
カテーテルに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an inductor having a removable indwelling member at its tip, and is particularly applicable to aneurysms, arteriovenous malformations, arteriovenous fistulas, cancers, etc. The present invention relates to a removable balloon catheter suitable for use in occlusion treatment.
従来のバルーンカテーテルは、先端に設けられた膨張お
よび収縮可能なバルーンとカテーテル本体とが溶断可能
な接合部材を介して接合されているものである。このバ
ルーンカテーテルでは、従来のバルーンを具備していな
いカテーテルでは到達できなかった微小な血管内部にま
で挿入することができ、診断および治療の両面において
極めて有力な医療塁具として使用されている。In a conventional balloon catheter, an inflatable and deflated balloon provided at the distal end and a catheter body are joined via a fusible joining member. This balloon catheter can be inserted into minute blood vessels that could not be reached with conventional catheters not equipped with a balloon, and is used as an extremely powerful medical tool in both diagnosis and treatment.
目的とする部位において、膨張バルーンをカテーテル先
端から離脱することが可能となるため、従来では不可能
であった種々の血管障害の治療が可能となった。その例
は、代表的な血管障害である動脈瘤、動静脈奇形、動静
脈ろうなどへの治療の応用が可能となった。また、例え
ば、膨張バルーンを動脈瘤内に留置することによって、
動静脈層が破裂した場合の重篤な後遺症を未然に防止す
ることができ、また動静脈奇形に流入する血管を離脱し
たバルーンで閉塞してしまうことにより、同じく動静脈
奇形の出血に判う後遺症を予防することが可能となった
。さらに、動静脈路を閉塞できれば、′動脈中の血流を
正常に近い状態に回復させることができる。Since it is now possible to remove the inflation balloon from the tip of the catheter at the target site, it has become possible to treat various vascular disorders that were previously impossible. For example, it has become possible to treat typical vascular disorders such as aneurysms, arteriovenous malformations, and arteriovenous fistulas. Also, for example, by placing an inflated balloon inside the aneurysm,
It is possible to prevent serious sequelae when the arteriovenous layer ruptures, and by occluding the blood vessels that flow into the arteriovenous malformation with the dislodged balloon, bleeding from the arteriovenous malformation can also be detected. It is now possible to prevent the aftereffects. Furthermore, if the arteriovenous route can be occluded, the blood flow in the artery can be restored to a state close to normal.
従来のバルーンカテーテルでは、このような用途のもと
で、バルーン内に例えば硬化性液体を充填して、膨張バ
ルーンを血管内に留置することにより、種々の血管障害
の治療を行おうとするものである。バルーンを離脱しよ
うとする部位は、主として体内奥深く潜む血管障害部で
ある。この血管障害部までカテーテルを誘導し、血管障
害部においてバルーンをカテーテル本体から離脱する必
要がある。Conventional balloon catheters are used to treat various vascular disorders by filling the balloon with, for example, a hardening liquid and indwelling the balloon into the blood vessel. be. The site from which the balloon is to be detached is mainly a vascular disorder located deep within the body. It is necessary to guide the catheter to the vascular lesion and remove the balloon from the catheter body at the vascular lesion.
このような離脱型のバルーンを備えてなるカテーテルの
従来例に、特公昭６０−３０２２５号に記載されたもの
が存在する。この従来のバルーンカテーテルでは、バル
ーンとカテーテルとを溶接可能な接合部材によって接合
する。この溶断可能な接合部材には、一対の電極が設け
られ、この電極へリード線を介して高周波電流を流す。A conventional example of a catheter equipped with such a removable balloon is the one described in Japanese Patent Publication No. 30225/1983. In this conventional balloon catheter, the balloon and the catheter are joined by a weldable joining member. This fusible bonding member is provided with a pair of electrodes, and a high frequency current is passed through the electrodes via a lead wire.
この結果、抵抗（血液）に高周波電流が流れる際に、ジ
ュール熱に基づき前記接合部材が加熱され、その結果、
かかる電極が設けられている位置で接合部材が溶断する
。したがって、膨張バルーンを血管病変部位へ留置する
ことができる。なお、血管病変部位までのカテーテルの
誘導は、バルーンにＸ線像撮材を充填することにより行
うことができる。As a result, when a high frequency current flows through the resistance (blood), the joining member is heated based on Joule heat, and as a result,
The joining member is fused at the position where such an electrode is provided. Therefore, the inflation balloon can be placed at the vascular lesion site. Note that the catheter can be guided to the vascular lesion site by filling a balloon with an X-ray imaging material.
しかし、上記従来のバルーンカテーテルでは、バルーン
とカテーテルとの溶断位置についての配慮がなく、接合
部材に設けられた電極は一対ともその表面積を同じにし
ていたため、高周波電流を印加した時、接合部材の電極
間で溶断が生じており、生体内留置部材側の電極が生体
内に残るおそれがあった。However, in the conventional balloon catheter described above, there was no consideration given to the fusing position between the balloon and the catheter, and the surface area of each pair of electrodes provided on the joining member was the same, so when high-frequency current was applied, the joining member Fusing occurred between the electrodes, and there was a risk that the electrode on the side of the indwelling member would remain in the living body.
本発明は、かかる問題点を解決するために、電極が生体
内に残るおそれがなく、生体内留置部材と誘導子本体を
分離可能な先端に生体内留置部材を有する誘導子を提供
することを目的とする。In order to solve such problems, the present invention aims to provide an inductor having an indwelling member at the tip thereof, where there is no risk of the electrode remaining in the living body and the indwelling member and the inductor body can be separated. purpose.
上記目的を達成するために、本発明は、先端に生体内留
置部材を有し、該生体内留置部材と誘導子本体とが溶断
可能な接合部材を介して接合されてなり、該接合部材に
は長軸方向に所定間隔を介して一対の電極が配置された
先端の生体内留置部材の分離が可能な誘導子において。In order to achieve the above object, the present invention has an in-vivo indwelling member at the tip, and the in-vivo indwelling member and the inductor main body are joined via a fusible joining member, and In an inductor that allows separation of an indwelling member at the tip, in which a pair of electrodes are arranged at a predetermined interval in the longitudinal direction.
前記一対の電極のうち生体内留置部材側の電極の表面積
が、他の電極の表面積より小さく形成されていることを
特徴とする先端の生体内留置部材の分離が可能な誘導体
である。The indwelling member at the tip of the indwelling member is separable, and the surface area of the electrode on the indwelling member side of the pair of electrodes is smaller than the surface area of the other electrodes.
上記本発明によれば、接合部材に設けられた一対の電極
のうち、生体内留置部材側の電極の表面積が、他の電極
のそれよりも小さく形成されていることにより、生体内
留置部材側の電極における電流密度が大きくなり、その
結果ジュール熱の発生が生体内留置部材側で大きくなる
。したがって、生体内留置部材側の電極が設けられた箇
所において接合部材が溶断することになり、電極が生体
内に残されるおそれがなくなるものである。According to the present invention, among the pair of electrodes provided on the joining member, the surface area of the electrode on the indwelling member side is smaller than that of the other electrodes, so that the surface area of the electrode on the indwelling member side is smaller than that of the other electrode. The current density at the electrode increases, and as a result, the generation of Joule heat increases on the side of the indwelling member. Therefore, the joining member is fused at the location where the electrode is provided on the side of the indwelling member, and there is no possibility that the electrode will be left in the living body.
次に、本発明の実施例について説明する。 Next, examples of the present invention will be described.
第１図はその一実施例に係るバルーンカテーテルの縦断
面構成図である。FIG. 1 is a longitudinal cross-sectional configuration diagram of a balloon catheter according to one embodiment.
第１図において、先端にバルーン３が設けられ、このバ
ルーン３は、チューブ状接合部材２と接着剤５によって
接合されている。接合部材２の形状は、チューブまたは
中空繊維であり、その外径、肉厚および長さは閉塞しよ
うとする血管の大きさと形状によって決定される。一方
、バルーンの他端側には、カテーテル本体１が設けられ
ており、このカテーテル本体１は前記接合部材と接着剤
４によって接合されている。In FIG. 1, a balloon 3 is provided at the tip, and this balloon 3 is joined to a tubular joining member 2 with an adhesive 5. The shape of the joining member 2 is a tube or a hollow fiber, and its outer diameter, wall thickness, and length are determined by the size and shape of the blood vessel to be occluded. On the other hand, a catheter main body 1 is provided on the other end side of the balloon, and this catheter main body 1 is joined to the above-mentioned joining member with an adhesive 4.
前記接合部材２表面には、導電性金属箔１２゜１３が設
けられている。この導電性金属箔は、−端が接着材によ
り部材２に接着されている。導電性金属箔のうち、バル
ーン３側の金属箔の表面積は、カテーテル本体１側の金
属箔１２より小さくなるように形成されている。この導
電性金属箔１２．１３が電極部に相当する。Conductive metal foils 12 and 13 are provided on the surface of the joining member 2. The negative end of this conductive metal foil is bonded to the member 2 with an adhesive. Among the conductive metal foils, the surface area of the metal foil on the balloon 3 side is smaller than that of the metal foil 12 on the catheter body 1 side. The conductive metal foils 12 and 13 correspond to electrode portions.
前記接合部材２は、体温下では個体であり、外力によっ
ては容易に断絶せず、血管中において体温以上で水分の
気化しない範囲の温度（約１００℃）で容易に溶解し、
さらにまた、血液中で溶解しても生体に害のないもので
形成されている。さらに、加工しやすく、柔軟なもので
形成されることが望ましい。具体的には、親水性重合体
がよく、特にポリビニルアルコール系重合体が好適であ
る。The joining member 2 is solid at body temperature, does not easily break due to external force, and easily dissolves in blood vessels at a temperature above body temperature in which water does not evaporate (approximately 100° C.).
Furthermore, it is made of a substance that is harmless to living organisms even if it dissolves in blood. Furthermore, it is desirable that it be made of a material that is easy to process and flexible. Specifically, hydrophilic polymers are preferred, and polyvinyl alcohol polymers are particularly preferred.
前記導電性金属箔の電極１２．１３は、リード線１４．
１５に接続されている。このリード線１４．１５は、そ
れぞれ高周波電源１８に接続されている。The conductive metal foil electrodes 12.13 are connected to the lead wires 14.
15. The lead wires 14 and 15 are each connected to a high frequency power source 18.
本体カテーテル１のバルーン３側の他端には、チューブ
１７が設けられている。このチューブ１７とカテーテル
本体１とは、接着部１６を介して固定されている。前記
リード線１４．１５は、かかる接着部１６を介して前記
高周波電源１８に接続されている。A tube 17 is provided at the other end of the main body catheter 1 on the balloon 3 side. This tube 17 and catheter main body 1 are fixed via an adhesive portion 16. The lead wires 14 , 15 are connected to the high frequency power source 18 via the adhesive portion 16 .
前記リード線１４．１５は導電性がよく、リークがなく
、発熱が最小限であり、柔らかく極めて細く加工できる
もの、例えばエナメル燃き付けの銅線、銀線、金線、ス
テンレス線、ニッケル線などで形成されることが望まし
い。The lead wires 14 and 15 have good conductivity, no leakage, minimal heat generation, are soft and can be processed into extremely thin pieces, such as enameled copper wire, silver wire, gold wire, stainless steel wire, or nickel wire. It is desirable to form the
前記接合部材２、カテーテル本体１、チューブ１７は、
円柱状に形成されており、容易に血管内を挿入すること
が可能なように形成されている。The joining member 2, the catheter body 1, and the tube 17 are
It is formed in a cylindrical shape so that it can be easily inserted into a blood vessel.
カテーテル本体１は、複雑なカテーテル操作を実現する
ために、柔軟な材料で構成されている。前記部材２の材
質の他に、シリコン、ポリエチレン等を用いることがで
きる。このカテーテル本体１は、その引張り強度が血管
挿入に際し破壊のない程度を必要とする。The catheter body 1 is made of a flexible material in order to realize complicated catheter operations. In addition to the material of the member 2, silicon, polyethylene, etc. can be used. The catheter body 1 needs to have a tensile strength that will not break when inserted into a blood vessel.
バルーン３と部材２、部材２とカテーテル本体１とは接
着材４，５により平滑な面となるように形成される。こ
の結果、バルーンカテーテルを血管内に挿入する際に、
血管を傷つけることがない。The balloon 3 and the member 2, and the member 2 and the catheter main body 1 are formed with adhesives 4 and 5 so as to have smooth surfaces. As a result, when inserting a balloon catheter into a blood vessel,
Does not damage blood vessels.
次に、上記バルーンカテーテルの動作について説明する
。高周波電流が部材２を介して、導電性金属箔からなる
電極１２．１３間に流れることによって、部材２が溶断
される。電極１２．１３間の距離は、できるだけ近い方
がより短時間に、さらにより適確に部材２が溶断される
ので好ましい。Next, the operation of the balloon catheter will be explained. The member 2 is fused as a high frequency current flows through the member 2 between the electrodes 12 and 13 made of conductive metal foil. It is preferable that the distance between the electrodes 12 and 13 be as close as possible because the member 2 can be melted down more accurately and in a shorter time.
導電性金属箔からなる電極１２．１３のうち、バルーン
３側に設けられている電極１３の表面積は、電極１２の
表面積より小さく形成されている。この結果、電極１３
における電流密度が大きくなり、ジュール熱の発生が電
極１３付近で大きくなる。Among the electrodes 12 and 13 made of conductive metal foil, the surface area of the electrode 13 provided on the balloon 3 side is smaller than the surface area of the electrode 12. As a result, electrode 13
The current density increases, and the generation of Joule heat increases near the electrode 13.
したがって、接合部材２が加熱される温度は、電極１３
側近傍で、電極１２側よりも大きくなる。Therefore, the temperature at which the joining member 2 is heated is the same as the temperature at which the electrode 13
It becomes larger near the side than on the electrode 12 side.
したがって、接合部材２は、電極１３近傍で溶断するこ
とになる。Therefore, the joining member 2 will be fused near the electrode 13.
バルーン３内に例えば硬化性液体を充填したのち、高周
波電流を流すことによって電極１３近傍で接合部材２が
溶断する。所定時間経過後、カテーテルを引張ると、接
合部材２は電極１３近傍で溶断しているため、バルーン
３が留置される。この際、電極１２．１３は、カテーテ
ル本体１と一緒にバルーン３が留置された部位から引き
離されることになる。したがって、電極１２．１３が血
管内に残るおそれがなくなる。電極１３が血管内に残る
状態としては、例えば電極１２と電極１３の間の接合部
材２が溶断すると、カテーテルを引き離す際にリード線
１５が断絶し、電極１３がバルーン３と共に血管内に残
るおそれがある場合である。After filling the balloon 3 with, for example, a curable liquid, the joining member 2 is fused near the electrode 13 by passing a high frequency current. When the catheter is pulled after a predetermined period of time has elapsed, the balloon 3 is left in place since the joining member 2 is fused near the electrode 13. At this time, the electrodes 12, 13 are pulled away from the site where the balloon 3 is placed together with the catheter body 1. Therefore, there is no possibility that the electrodes 12, 13 remain in the blood vessel. For example, if the bonding member 2 between the electrodes 12 and 13 melts, the lead wire 15 may be severed when the catheter is pulled apart, and the electrode 13 may remain in the blood vessel together with the balloon 3. This is the case.
上記本実施例では、金属箔１２．１３を接合部材２表面
に設けた例について説明したが、金属箔を接合部材２内
面に設けることもできる。また、前記金属箔は、接合部
材の表面全体にわたって形成することが望ましい。なお
、接合部材２を溶断することができれば、接合部材２の
外側円周面の一部に金属箔を設けることもできる。In the above embodiment, an example has been described in which the metal foils 12 and 13 are provided on the surface of the joining member 2, but the metal foil may also be provided on the inner surface of the joining member 2. Moreover, it is desirable that the metal foil be formed over the entire surface of the joining member. Note that if the joining member 2 can be cut by melting, a metal foil may be provided on a part of the outer circumferential surface of the joining member 2.
前記金属箔１２．１３の表面積の比は、適宜決定できる
。一般に、表面積の比が１：２以上であれば、先端側の
電極部で接合部材２の溶断を確実に行うことができる。The ratio of the surface areas of the metal foils 12 and 13 can be determined as appropriate. Generally, if the surface area ratio is 1:2 or more, the bonding member 2 can be reliably fused at the electrode portion on the tip side.
上記実施例では、電極を金属箔で形成したが、その他に
銅線を巻き付けることにより電極を形成することができ
る。この場合、バルーン３側の電極における銅線の巻き
数を減らし、カテーテル本体側の銅線の巻き数を大きく
することにより、先端側電極の表面積を小さくすること
ができる。また、電極として部材２に導電性金属をコー
ティングしたものを用いることもできる。さらに、電極
部に相当する箇所に導電性の樹脂を用いたものも、電極
として使用できる。In the above embodiments, the electrodes were formed of metal foil, but the electrodes can also be formed by wrapping copper wire around other materials. In this case, by reducing the number of turns of the copper wire in the electrode on the balloon 3 side and increasing the number of turns of the copper wire on the catheter body side, the surface area of the tip side electrode can be reduced. Furthermore, the member 2 coated with a conductive metal can also be used as the electrode. Furthermore, electrodes in which conductive resin is used at locations corresponding to the electrode portions can also be used as electrodes.
なお、本実施例では、電極として１対のものを用いたが
、さらに電極の数を多くすることもできる。In this embodiment, one pair of electrodes is used, but the number of electrodes can be further increased.
次に、本発明の他の実施例について説明する。Next, other embodiments of the present invention will be described.
第２図は、その実施例に係るバルーンカテーテルの一部
縦断面構成図である。FIG. 2 is a partially vertical cross-sectional configuration diagram of the balloon catheter according to the embodiment.
第２図において、３は先端バルーン、１２，１３は導電
性金属箔の電極、２は接合部材、１はカテーテル本体で
ある。本実施例において、接合部材２は中空の弾性部材
であって、チューブ状に形成されてなる。この接合部材
２はカテーテル本体及びバルーンにそれぞれ嵌装される
ように構成されている。カテーテル本体１側の口径はバ
ルーン側よりも大きく構成されているために、接合部材
２の口径はバルーン３側で小さくなる。即ち電極の直径
はバルーン側で小さくなり電極の幅を同じくしても、バ
ルーン側の電極１３の表面積は他端側の電極の表面積よ
りも小さく構成されている。In FIG. 2, 3 is a tip balloon, 12 and 13 are conductive metal foil electrodes, 2 is a joining member, and 1 is a catheter body. In this embodiment, the joining member 2 is a hollow elastic member formed into a tube shape. This joining member 2 is configured to be fitted into the catheter body and the balloon, respectively. Since the diameter on the catheter body 1 side is larger than that on the balloon side, the diameter of the joining member 2 becomes smaller on the balloon 3 side. That is, the diameter of the electrode is smaller on the balloon side, and even if the width of the electrodes is the same, the surface area of the electrode 13 on the balloon side is smaller than the surface area of the electrode on the other end side.
以上の実施例では、バルーンカテーテルについて説明し
たが、薬剤たとえばガン剤をつめた生体内留置部材を先
端に有する誘導子についても、本発明を適用することが
できる。In the above embodiments, a balloon catheter has been described, but the present invention can also be applied to an inductor having an indwelling member at its tip filled with a drug, such as a cancer drug.
上記本発明によれば、電極が生体内に残るおそれがなく
、生体内留置部材と誘導子本体とを分離できる。According to the present invention, there is no fear that the electrode remains in the living body, and the in-vivo indwelling member and the inductor main body can be separated.
第１図は本発明の一実施例に係るバルーンカテーテルの
縦断面構成図、第２図は他の実施例に係るバルーンカテ
ーテルの一部縦断面構成図である。
１・・・カテーテル本体、１２．１３・・・導電性金属
箔電極、２・・・接合部材、 １４．１５・・
・リード線、３・・・バルーン、 １６・・・接
着部、４・・−接着剤、 １７・・・チューブ
、５−・・接着剤、 １８・・・高周波電源。FIG. 1 is a vertical cross-sectional configuration diagram of a balloon catheter according to one embodiment of the present invention, and FIG. 2 is a partial vertical cross-sectional configuration diagram of a balloon catheter according to another embodiment. 1... Catheter body, 12.13... Conductive metal foil electrode, 2... Joining member, 14.15...
- Lead wire, 3...Balloon, 16...Adhesive part, 4...-Adhesive, 17...Tube, 5-...Adhesive, 18...High frequency power supply.
Claims (1)
と誘導子本体とが溶断可能な接合部材を介して接合され
てなり、該接合部材には長軸方向に所定間隔を介して一
対の電極が配置された、先端の生体内留置部材の分離が
可能な誘導子において、前記一対の電極のうち生体内留
置部材側の電極の表面積が、他の電極の表面積より小さ
く形成されていることを特徴とする先端の生体内留置部
材の分離が可能な誘導子。(1) An indwelling member is provided at the tip, and the indwelling member and the inductor body are joined via a fusion-cuttable joining member, and the joining member is connected at a predetermined interval in the longitudinal direction. In an inductor in which a pair of electrodes are disposed at the tip and the indwelling member at the tip can be separated, the surface area of the electrode on the indwelling member side of the pair of electrodes is smaller than the surface area of the other electrodes. An inductor whose distal end is capable of separating an indwelling member in a living body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63065085A JPH01238874A (en) | 1988-03-18 | 1988-03-18 | Inductor capable of separating storage member in vivo from its tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63065085A JPH01238874A (en) | 1988-03-18 | 1988-03-18 | Inductor capable of separating storage member in vivo from its tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01238874A true JPH01238874A (en) | 1989-09-25 |
| JPH0510954B2 JPH0510954B2 (en) | 1993-02-12 |
Family
ID=13276749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63065085A Granted JPH01238874A (en) | 1988-03-18 | 1988-03-18 | Inductor capable of separating storage member in vivo from its tip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01238874A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008206549A (en) * | 2007-02-23 | 2008-09-11 | Kaneka Corp | Separation type embolic medical wire with connection part in irregular cross sectional shape |
| US8932317B2 (en) | 1999-06-02 | 2015-01-13 | Microvention, Inc. | Intracorporeal occlusive device and method |
| US9242070B2 (en) | 2007-12-21 | 2016-01-26 | MicronVention, Inc. | System and method for locating detachment zone of a detachable implant |
| US9561125B2 (en) | 2010-04-14 | 2017-02-07 | Microvention, Inc. | Implant delivery device |
-
1988
- 1988-03-18 JP JP63065085A patent/JPH01238874A/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8932317B2 (en) | 1999-06-02 | 2015-01-13 | Microvention, Inc. | Intracorporeal occlusive device and method |
| US9526505B2 (en) | 1999-06-02 | 2016-12-27 | Microvention, Inc. | Intracorporeal occlusive device and method |
| US9788840B2 (en) | 1999-06-02 | 2017-10-17 | Michael P. Marks | Intracorporeal occlusive device and method |
| JP2008206549A (en) * | 2007-02-23 | 2008-09-11 | Kaneka Corp | Separation type embolic medical wire with connection part in irregular cross sectional shape |
| JP4725532B2 (en) * | 2007-02-23 | 2011-07-13 | 株式会社カネカ | A medical detachable embolic wire having a connection with an irregular cross-sectional shape |
| US9242070B2 (en) | 2007-12-21 | 2016-01-26 | MicronVention, Inc. | System and method for locating detachment zone of a detachable implant |
| US10299755B2 (en) | 2007-12-21 | 2019-05-28 | Microvention, Inc. | System and method for locating detachment zone of a detachable implant |
| US9561125B2 (en) | 2010-04-14 | 2017-02-07 | Microvention, Inc. | Implant delivery device |
| US10517604B2 (en) | 2010-04-14 | 2019-12-31 | Microvention, Inc. | Implant delivery device |
| US11357513B2 (en) | 2010-04-14 | 2022-06-14 | Microvention, Inc. | Implant delivery device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0510954B2 (en) | 1993-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9539011B2 (en) | Vaso-occlusive device delivery system | |
| TWI789782B (en) | Medical system | |
| JP6359664B2 (en) | Vascular occlusive device delivery system | |
| JP5406262B2 (en) | Vascular occlusion delivery device with flexible distal end having torsional resistance | |
| JP4084661B2 (en) | Implantable device with polymeric detachment joint | |
| JP5372785B2 (en) | Apparatus and method for deploying a therapeutic device using a catheter | |
| JP6271140B2 (en) | Embolization coil detachment mechanism having flexible distal member, electrical resistance heating element and shape memory polymer element | |
| US6533801B2 (en) | Vaso-occlusive member assembly with multiple detaching points | |
| JP4805148B2 (en) | Medical instruments | |
| JP4872913B2 (en) | Medical wire | |
| US8992563B2 (en) | Delivery wire assembly for occlusive device delivery system | |
| WO1999022651A1 (en) | Medical device for disposing in vivo indwelling member and method of disposing the member | |
| TW201521663A (en) | Expandable body device and method of use | |
| US20100268251A1 (en) | Delivery wire for occlusive device delivery system and method of manufacture | |
| JPH1057385A (en) | Coiled plugging material | |
| JP2012520134A (en) | Electrical contacts for closure device delivery systems | |
| KR20130111420A (en) | Embolic coil detachment mechanism with flexible distal member and resistive electrical heating element | |
| JPH01238874A (en) | Inductor capable of separating storage member in vivo from its tip | |
| JPH11197250A (en) | Wire device for arranging in vivo indwelling member | |
| JP4463191B2 (en) | Pusher wire for indwelling members | |
| JP2536923B2 (en) | Detachable balloon catheter | |
| JP3994148B2 (en) | Detachable embolic coil | |
| JP2006122199A (en) | Releasable embolus coil | |
| JP2013150687A (en) | Aneurysm treatment device and aneurysm treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090212 Year of fee payment: 16 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090212 Year of fee payment: 16 |