JP2893833B2 - Endoscopic balloon catheter - Google Patents
Endoscopic balloon catheterInfo
- Publication number
- JP2893833B2 JP2893833B2 JP2085762A JP8576290A JP2893833B2 JP 2893833 B2 JP2893833 B2 JP 2893833B2 JP 2085762 A JP2085762 A JP 2085762A JP 8576290 A JP8576290 A JP 8576290A JP 2893833 B2 JP2893833 B2 JP 2893833B2
- Authority
- JP
- Japan
- Prior art keywords
- balloon
- synthetic resin
- tube
- distal end
- 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.)
- Expired - Fee Related
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 26
- 239000000057 synthetic resin Substances 0.000 claims description 26
- 239000000835 fiber Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 6
- 208000024891 symptom Diseases 0.000 claims 1
- 210000004369 blood Anatomy 0.000 description 10
- 239000008280 blood Substances 0.000 description 10
- 210000004204 blood vessel Anatomy 0.000 description 7
- 239000013307 optical fiber Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000003745 diagnosis Methods 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000001574 biopsy Methods 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000002785 anti-thrombosis Effects 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 210000000601 blood cell Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000010241 blood sampling Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Endoscopes (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は医療において、経皮的に血管内に送り込み膨
脹したバルーンで血球を排除し、バルーン外壁に接する
血管内壁の状態をバルーン内からファイバースコープで
観察しながら、診断や治療をしようする内視鏡用バルー
ンカテーテルに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] In the medical field, the present invention relates to a method of percutaneously delivering blood into a blood vessel with an inflated balloon to remove blood cells, and changing the state of the blood vessel inner wall in contact with the balloon outer wall from inside the balloon to a fiber. The present invention relates to a balloon catheter for an endoscope for performing diagnosis and treatment while observing with a scope.
［従来の技術］ 血管にファイバースコープを送り込み血管内を観察す
る試みは多くあり、それらのほとんどは血管内観察部位
の両端あるいは血流の上流側をバルーンで閉塞、観察部
位付近の血液を生理食塩水に置換、透明な視野を確立し
たところにファイバースコープを挿入し観察している。
一方、田辺らは内視鏡の先端をバルーンで包み血管や心
臓内に挿入、膨脹させたバルーンを押し付けたり接触さ
せて血液を排除し、バルーンの内側から接触部の観察を
試みている（日本臨床外科学会誌、31、215−218、197
0;外科、32、833−837、1970）。吉田らも同様な方法を
提案している（吉田、他、特公開55−151936;西村。
他、特公開59−135044）。また、島村はファイバースコ
ープを包むバルーンについてレーザー光線も通じうる天
然ゴムのバルーン製作方法を提案している（島村、他、
特公開63−315025;63−315027;63−31728）。[Prior art] There are many attempts to send a fiberscope into a blood vessel and observe the inside of the blood vessel. Most of these attempts occlude both ends of an intravascular observation site or the upstream side of blood flow with a balloon, and remove blood near the observation site with physiological saline. We replaced with water and inserted a fiberscope into a place where a transparent field of view was established, and observed.
On the other hand, Tanabe et al. Wrapped the tip of the endoscope with a balloon, inserted it into a blood vessel or heart, pressed or contacted an inflated balloon to eliminate blood, and tried to observe the contact area from inside the balloon (Japan Journal of Clinical Surgery Society, 31, 215-218, 197
0; surgery, 32, 833-837, 1970). Yoshida et al. Have proposed a similar method (Yoshida, et al., Special Publication 55-151936; Nishimura.
Et al., Special Publication 59-135044). Shimamura has also proposed a method of making natural rubber balloons that allow laser beams to pass through the balloon that wraps the fiberscope (Shimamura, et al.,
Special publication 63-315025; 63-315027; 63-31728).
［発明が解決しようとする課題］ 田辺らや、吉田そして島村らが実施し提案する膨脹し
たバルーンを血液内壁の観察部位に接触させ、血液を排
除した上でバレーンの中から内視鏡で観察する方法は、
一般に行われている膨脹したバルーンで血管の観察部位
の前後を閉塞し血液を生理食塩水等に置換した後で観察
する方法に較べ生理学的にも好ましく、またファイバー
スコープの先端も汚れず理想的な方法であるようだが、
装置の構造上、観察のみしか行えず血液や病巣組織の採
取、あるいはレーザーやメスによる治療を施すにはカテ
ーテル交換等の別の操作を組み合わせなければならず手
間がかかり操作が複雑化する。そして治療等を施した後
再度患部を観察しようとすれば、上記のバルーンを先端
に被せた内視鏡を再挿入して見るわけだが、不透明な血
液が充満している血管の中でレントゲンで透視しながら
行っても実際には手探りの状態であり、バルーンの膨
脹、観察、収縮そして移動の繰返しで熟練を要し、時間
がかかり患者の負担も大きくなり好ましくない。[Problems to be Solved by the Invention] An inflated balloon proposed and implemented by Tanabe et al., Yoshida and Shimamura et al. Is brought into contact with an observation site on the inner wall of blood to remove blood, and then observed through an endoscope from inside the balane. The way to do
It is physiologically preferable compared to the method of obstructing the blood vessel observation site before and after with an inflated balloon and replacing the blood with physiological saline, etc., which is generally performed, and the tip of the fiberscope is ideal without contamination. Seems to be
Due to the structure of the device, only observation can be performed, and other operations such as catheter exchange must be combined to collect blood or lesion tissue, or to perform treatment with a laser or scalpel, which is troublesome and complicated. Then, if you try to observe the affected part again after giving treatment etc., reinsert the endoscope covered with the balloon at the tip, but look at it with X-ray in a blood vessel filled with opaque blood Even if it is performed while seeing through, it is actually in a groping state, and it takes time and skill to repeat the inflation, observation, deflation and movement of the balloon, which is time-consuming and undesirably increases the burden on the patient.
［課題を解決するための手段］ 上記の課題を解決するために本発明者らは鋭意検討し
た結果、２つの中空を有する柔軟な合成樹脂製チューブ
の先端にバルーンを装着、その内腔を合成樹脂製チュー
ブの中空の１つと連通させ、その中空にオプティカルフ
ァイバーのファイバーを通し、ファイバーの先端をバル
ーンの中腔の中に突き出させ、もう１つの中空を採血や
圧モニター、あるいは細胞採取用の生検鉗子やメスまた
は治療用のレーザー用ファイバー等を通す通路として利
用すればカテーテルの位置をほとんど動かすことなく観
察し、治療や診断することが可能になることを見出だし
本発明に達した。[Means for Solving the Problems] The present inventors have conducted intensive studies to solve the above problems, and as a result, attached a balloon to the tip of a flexible synthetic resin tube having two hollows, and synthesized the lumen thereof. It communicates with one hollow of the resin tube, passes the fiber of optical fiber through the hollow, makes the tip of the fiber protrude into the cavity of the balloon, and uses the other hollow for blood collection, pressure monitor, or cell collection. The present inventors have found that if the catheter is used as a passage for passing a biopsy forceps, a scalpel, or a laser fiber for treatment, the position of the catheter can be observed with little movement, and treatment and diagnosis can be performed.
すなわち本発明は、全長に独立して連通する２つの中
空を有する合成樹脂製チューブの先端部に、該中空の１
つに通じる内腔を有するバレーンを装着、もう１つの中
空の先端を該チューブ先端に開口させたバルーンカテー
テルにおいて、透明かつ柔軟なバルーンは合成樹脂製チ
ューブ先端の開口部を塞がないように該チューブ先端部
周囲を囲んで覆い、バルーンと合成樹脂製チューブ外表
面で作られる内腔は該チューブ壁に設けた開口部を通じ
全長に連通する中空の１つに連通し、該中空には先端が
バルーン内腔内にあるファイバースコープ用のファイバ
ーが配置され、隙間はバルーン膨脹用の流体通路とす
る、もう１つの合成樹脂製チューブ全長に連通する中空
は、その先端を該チューブ先端に開口させ操作用通路と
して利用することを特徴とする内視鏡用バルーンカテー
テルを提供するものである。That is, the present invention relates to a method in which two ends of a synthetic resin tube having independent communication with the entire length are provided at the distal end of the tube.
In a balloon catheter equipped with a balane having a lumen leading to one end and another hollow tip opened at the tip of the tube, a transparent and flexible balloon is used so as not to block the opening at the tip of the synthetic resin tube. The tube is surrounded and covered around the distal end of the tube, and the lumen formed by the balloon and the outer surface of the synthetic resin tube communicates with one of the hollows communicating with the entire length through an opening provided in the tube wall. The fiber for the fiberscope in the lumen of the balloon is arranged, the gap is a fluid passage for balloon inflation, and the other end of the hollow communicating with the entire length of the synthetic resin tube is opened at the end of the tube. To provide a balloon catheter for an endoscope, wherein the balloon catheter is used as a passage.
次に、本発明の内視鏡用バルーンカテーテルについて
図を用いて説明する。Next, the balloon catheter for an endoscope of the present invention will be described with reference to the drawings.
第１図は、本発明の内視鏡用バルーンカテーテルの基
本的な構造を示す外観図（Ａ）と合成樹脂製チューブＡ
−Ａ′部の断面を示す断面図（Ｂ）である。第２図は、
合成樹脂製チューブ先端のバルーン装着とオプティカル
ファイバーの配置を示した断面図（Ａ）と（Ｂ）であ
る。全長が均一な外径の柔軟で表面が滑かな合成樹脂製
チューブ（１）は、第１図の断面図（Ｂ）が示すように
その断面はほぼ円形であり、そしてこの場合、断面が半
円形の２つの中空（３）、（４）を該チューブの全長に
渡り互いに独立させて有している。バルーン（２）は、
合成樹脂製チューブ（１）先端のある１つの中空に通じ
た先端開口部（８）を塞がないように該チューブ先端周
囲を取り囲んで装着、該チューブ外表面とバルーンが作
る内腔（７）は、第２図の（Ａ）や（Ｂ）に示している
ような方法により合成樹脂製チューブに側孔を設け、あ
るいは該チューブ先端の一部を削りとって露出させた合
成樹脂製チューブの中空の１つ（３）と連通させる。そ
して、該中空にはオプティカルファイバーのファイバー
（６）が配置され隙間をバルーン膨脹用の流体通路
（３）となる。オプティカルファイバー（６）の先端は
バルーン内腔（７）にあって、ファイバーは流体通路
（５）内を軸方向に動かせることもできる。膨脹したバ
ルーンの先端は、第２図においては合成樹脂製チューブ
（１）先端よりさらに前方まで伸びているが、その位置
や膨脹の形態は限定するものではない。合成樹脂製チュ
ーブ（１）のもう１つの中空（４）は、その先端が該チ
ューブ先端に開口（８）させ、通常は採血や圧モニタ
ー、あるいは病巣細胞の採取の生検鉗子や治療用のメス
あるいはレーザー用のファイバーなどが通る操作用通路
（９）として使用され、本発明の主要目的であるカテー
テル交換等を行わず、観察と診断や治療が同時に行なえ
るようにしている。FIG. 1 is an external view (A) showing a basic structure of a balloon catheter for an endoscope of the present invention, and a tube A made of synthetic resin.
It is sectional drawing (B) which shows the cross section of -A 'part. Fig. 2
FIGS. 4A and 4B are cross-sectional views showing the mounting of a balloon at the tip of a synthetic resin tube and the arrangement of optical fibers. A flexible synthetic resin tube (1) having a uniform overall length and an outer diameter has a substantially circular cross section as shown in the cross-sectional view (B) of FIG. 1, and in this case, the cross section is half. It has two circular hollows (3), (4) independent of each other over the entire length of the tube. The balloon (2)
A synthetic resin tube (1) is attached around the tube tip so as not to block one hollow end opening (8) having a tip, and a lumen (7) formed by the tube outer surface and a balloon. Is a synthetic resin tube in which a side hole is provided in a synthetic resin tube by a method as shown in FIGS. 2A and 2B or a portion of the tube tip is cut off and exposed. Communicate with the hollow one (3). An optical fiber (6) is disposed in the hollow, and the gap serves as a fluid passage (3) for balloon inflation. The tip of the optical fiber (6) is in the balloon lumen (7) so that the fiber can be moved axially in the fluid passage (5). In FIG. 2, the tip of the inflated balloon extends further forward than the tip of the synthetic resin tube (1), but the position and the form of inflation are not limited. The other hollow (4) of the synthetic resin tube (1) has an opening (8) at the tip of the tube, and is usually used for blood sampling, pressure monitoring, biopsy forceps for collecting focal cells, and treatment. It is used as an operation passage (9) through which a scalpel or a fiber for a laser passes, so that observation, diagnosis, and treatment can be performed at the same time without replacing a catheter, which is a main object of the present invention.
次に、本発明の内視鏡用バルーンカテーテルの構成と
機能について説明する。Next, the configuration and function of the balloon catheter for an endoscope of the present invention will be described.
合成樹脂製チューブ（１）はポリエチレン、塩化ビニ
ール、ポリプロレンやナイロンのような可撓性のある樹
脂で作成されたチューブであればいずれも使用できる、
またポリウレタンは柔軟で塩化ビニール等と同様に表面
を親水性にしたり抗血栓化する材料として都合が良い材
料である。そして、チューブは上記の樹脂の単独あるい
は積層にしたり、あるいはファイバー等の動きを良くす
るため内装にポリイミドの薄いチューブを挿入すること
は操作性が改善される好ましい構成になる。合成樹脂チ
ューブ先頭に取り付けるバルーン（２）は透明性があり
柔軟で弾力性を有する膜が好ましいが、100μｍ以下、
好ましくは50μｍ以下のポリエチレン、塩化ビニールや
ナイロンの薄膜のように弾性のない合成樹脂の薄膜でも
使用に差し支えなく、ゴム、ポリウレタンのように弾性
がある素材あるいはポリビニルアルコールのように若干
弾性を有する膜でも多少厚く作成すれば収縮時に皺の少
ない好ましいバルーン素材となる。As the synthetic resin tube (1), any tube made of a flexible resin such as polyethylene, vinyl chloride, polypropylene or nylon can be used.
Polyurethane is a material which is flexible and is convenient as a material which makes the surface hydrophilic or antithrombotic like vinyl chloride or the like. It is preferable that the tube be made of the above resin alone or laminated, or that a thin tube of polyimide be inserted into the interior to improve the movement of the fiber or the like so that the operability is improved. The balloon (2) to be attached to the top of the synthetic resin tube is preferably a transparent, flexible and elastic film.
Preferably, a thin film of inelastic synthetic resin such as a thin film of polyethylene, vinyl chloride or nylon having a thickness of 50 μm or less may be used, and an elastic material such as rubber or polyurethane or a film having slight elasticity such as polyvinyl alcohol may be used. However, if it is made slightly thicker, it becomes a preferable balloon material with less wrinkles during shrinkage.
［発明の効果］ このような構造を持つ本発明の内視鏡用バルーンカテ
ーテルを使用すれば、血液の置換に生理食塩水を使わ
ず、カテーテル交換しなくとも観察と治療や診断のため
の処置が同時に行なうことが可能となり、操作が簡略化
された患者の負担も著しく軽減される。[Effect of the Invention] By using the balloon catheter for an endoscope of the present invention having such a structure, a treatment for observation, treatment, and diagnosis can be performed without using a saline solution for replacing blood and replacing the catheter. Can be performed at the same time, and the burden on the patient whose operation has been simplified is significantly reduced.
第１図は、本発明の内視鏡用バルーンカテーテルの基本
的な構造を示す外観図（Ａ）と合成樹脂製チューブＡ−
Ａ′部の断面を示す断面図（Ｂ）であり、第２図は、合
成樹脂製チューブ先端のバルーン装着とオプティカルフ
ァイバーの配置を示した断面図（Ａ）と（Ｂ）である。 １……合成樹脂製チューブ ２……バルーン ３、４……中空 ５……流体通路 ６……オプティカルファイバー ７……バルーン内腔 ８……先端開口部 ９……操作用通路FIG. 1 is an external view (A) showing the basic structure of a balloon catheter for an endoscope of the present invention and a synthetic resin tube A-.
FIG. 2 is a cross-sectional view (B) showing a cross-section of the part A ′, and FIG. 2 is a cross-sectional view (A) and (B) showing the mounting of a balloon at the tip of a synthetic resin tube and the arrangement of optical fibers. DESCRIPTION OF SYMBOLS 1 ... Synthetic resin tube 2 ... Balloon 3, 4 ... Hollow 5 ... Fluid passage 6 ... Optical fiber 7 ... Balloon lumen 8 ... Tip opening 9 ... Operation passage
Claims (3)
る合成樹脂製チューブの先端部に、該中空の１つに通じ
る内腔を有するバルーンを装着、もう１つの中空の先端
を合成樹脂製チューブ先端に開口させたバルーンカテー
テルにおいて、透明かつ柔軟なバルーンは合成樹脂製チ
ューブ先端の開口部を塞がないように該チューブ先端部
周囲を囲んで覆い、バルーンと合成樹脂製チューブ外表
面で作られる内腔は該チューブ壁に設けた開口部を通じ
全長に連通する中空の１つに連通し、該中空には先端が
バルーン内腔内にあるファイバースコープ用のファイバ
ーが配置され、隙間はバルーン膨脹用の流体通路とす
る、もう１つの合成樹脂製チューブ全長に連通する中空
は、その先端を該チューブ先端に開口させ操作用通路と
して利用することを特徴とする内視鏡用バルーンカテー
テル。1. A balloon having a lumen communicating with one of said hollows is attached to a distal end of a synthetic resin tube having two hollows communicating independently over its entire length, and the other hollow distal end is made of a synthetic resin. In a balloon catheter opened at the distal end of a tube made of a synthetic resin, a transparent and flexible balloon covers and surrounds the distal end of the synthetic resin tube so as not to block the opening at the distal end of the synthetic resin tube. The lumen to be made communicates with one of the hollows communicating with the entire length through an opening provided in the tube wall, and a fiber for a fiberscope whose tip is in the balloon lumen is disposed in the hollow, and the gap is a balloon. A hollow, which is a fluid passage for expansion and communicates with the entire length of another synthetic resin tube, has its tip opened to the tip of the tube and used as an operation passage. Endoscopic balloon catheter according to symptoms.
うバルーンは、膨脹させたバルーンの先端が該チューブ
の前方にまで及ぶようにした特許請求の範囲第１項記載
の内視鏡用バルーンカテーテル。2. The balloon for an endoscope according to claim 1, wherein the balloon surrounding and surrounding the distal end portion of the synthetic resin tube is such that the distal end of the inflated balloon extends to the front of the tube. catheter.
用のファイバーは、該通路で軸方向に動くようにした特
許請求の範囲第１項及び第２項記載の内視鏡用バルーン
カテーテル。3. The balloon catheter for an endoscope according to claim 1, wherein the fiber for the fiberscope disposed in the fluid passage is moved axially in the passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2085762A JP2893833B2 (en) | 1990-03-30 | 1990-03-30 | Endoscopic balloon catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2085762A JP2893833B2 (en) | 1990-03-30 | 1990-03-30 | Endoscopic balloon catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03284265A JPH03284265A (en) | 1991-12-13 |
| JP2893833B2 true JP2893833B2 (en) | 1999-05-24 |
Family
ID=13867880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2085762A Expired - Fee Related JP2893833B2 (en) | 1990-03-30 | 1990-03-30 | Endoscopic balloon catheter |
Country Status (1)
| Country | Link |
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| JP (1) | JP2893833B2 (en) |
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-
1990
- 1990-03-30 JP JP2085762A patent/JP2893833B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016071779A1 (en) | 2014-11-07 | 2016-05-12 | Medinice Spółka Akcyjna | Multifunctional, electrophysiological diagnostic catheter for treatments in electrocardiology |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPH03284265A (en) | 1991-12-13 |
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