JPS63286168A - Catheter - Google Patents
CatheterInfo
- Publication number
- JPS63286168A JPS63286168A JP62121106A JP12110687A JPS63286168A JP S63286168 A JPS63286168 A JP S63286168A JP 62121106 A JP62121106 A JP 62121106A JP 12110687 A JP12110687 A JP 12110687A JP S63286168 A JPS63286168 A JP S63286168A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- blood
- pressurizing
- wall
- catheter
- 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.)
- Pending
Links
- 239000002872 contrast media Substances 0.000 claims abstract description 26
- 239000008280 blood Substances 0.000 claims abstract description 21
- 210000004369 blood Anatomy 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 210000004204 blood vessel Anatomy 0.000 abstract description 13
- 230000017531 blood circulation Effects 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000000302 ischemic effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000036770 blood supply Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000002399 angioplasty Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は生体内に挿入されて用いられるカテーテルに関
する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a catheter used by being inserted into a living body.
（従来の技術及びその問題点）
従来、例えば第４図に示すような経皮的血管形成手術に
用いられるカテーテル１においては、造影剤はカテーテ
ル１内部に封入されるので、血管２内部に流すことがで
きないために、術者の勘と経験により、直前に得られた
造影血管像と、該カテーテル１に設けられたマーカ３の
位置を比較しつつ操作するようにしていた。このため、
正確な位置決めが難しく、操作にも時間がかかるという
問題があった。(Prior art and its problems) Conventionally, in a catheter 1 used for percutaneous angioplasty surgery as shown in FIG. Therefore, the operator's intuition and experience have been used to compare the previously obtained contrast-enhanced blood vessel image with the position of the marker 3 provided on the catheter 1 during operation. For this reason,
There were problems in that accurate positioning was difficult and operation took time.
また、このようなカテーテル１では、該カテーテル１内
部に薄い造影剤を入れ、先端部近傍に設けられたバルー
ン４を膨張させるようにしている。Further, in such a catheter 1, a thin contrast agent is placed inside the catheter 1, and a balloon 4 provided near the tip is inflated.
従って、血管２内を矢印六方向に流れる血液は該バルー
ン４により閉塞されてしまう。Therefore, blood flowing in the six directions of the arrows within the blood vessel 2 is occluded by the balloon 4.
これでは、バルーン４から下流の血管には血液か供給さ
れず、虚血状態か発生することになり、手術を施される
思考の生命に関わる危険な状態に陥れるという問題かあ
った。In this case, blood is not supplied to the blood vessels downstream from the balloon 4, resulting in an ischemic state, which poses a problem of putting the person undergoing surgery into a life-threatening situation.
そこで本発明は上述した問題点を解決したカテーテルの
提供を目的とする。Therefore, an object of the present invention is to provide a catheter that solves the above-mentioned problems.
［発明の構成］
（問題点を解決するための手段）
上記問題点を解決するための本発明の構成は、双方とも
に先端を開口した外側筒状体とこの内部に配置された内
側筒状体とを有し、外側筒状体内壁と内側筒状体外壁と
の間には第１の流体を流通させ、内側筒状体内部には第
２の流体を流通させるカテーテルであって、内側筒状体
先端部側壁には第２の流体からの圧力により側壁外方に
膨出する加圧膨出部を設け、外側筒状体には前記内側筒
状体の加圧膨出部の膨出により閉塞される第１の流体の
圧力により側壁外方に膨出する加圧膨出部を設けたこと
を特徴としている。[Structure of the Invention] (Means for Solving the Problems) The structure of the present invention for solving the above problems consists of an outer cylindrical body both of which have open ends, and an inner cylindrical body disposed inside the outer cylindrical body. A catheter having: a first fluid flowing between an outer cylindrical body wall and an inner cylindrical outer wall; and a second fluid flowing inside the inner cylindrical body; The side wall of the distal end of the shaped body is provided with a pressurizing bulge that bulges outward from the side wall due to pressure from the second fluid, and the outer cylindrical body is provided with a bulge of the pressurizing bulge of the inner cylindrical body. It is characterized by providing a pressurizing bulge that bulges outward from the side wall due to the pressure of the first fluid that is occluded.
（作 用）
上記構成を有する本発明の作用は、外側筒状体内に造影
剤を流すとともに、血管中において外側筒状体に設けら
れた加圧膨出部を膨張させることによって、流通する血
液が閉塞された場合であっても、内側筒状体から例えば
酸素血を加圧膨出部から下流の血管に供給させるように
している。(Function) The function of the present invention having the above configuration is to flow the contrast medium into the outer cylindrical body and to expand the pressurized bulge provided on the outer cylindrical body in the blood vessel, thereby controlling the flow of blood. Even if the tube is occluded, for example, oxygenated blood is supplied from the inner cylindrical body to the downstream blood vessel from the pressurized bulge.
（実施例）
以下、本発明の一実施例カテーテルについで図面を参照
して説明する。(Embodiment) Hereinafter, a catheter according to an embodiment of the present invention will be described with reference to the drawings.
第１図は本発明一実施例カテーテルと、これに接続され
る装置類の説明図である。FIG. 1 is an explanatory diagram of a catheter according to one embodiment of the present invention and devices connected thereto.
同図においてカテーテル５は、一端つまり生体内に挿入
する先ｔＪＭ１０を開口し、円筒状からなる例えばシリ
コンゴム製の外側筒状体６と、この外側筒状体６の内側
であって同心円状に配置された同様の材質からなる内側
筒状体７と有する構成となっている。また、これらの外
側筒状体６．内側筒状休７の後端側１６には、それぞれ
第１の流体としての造影剤を供給する造影剤供給部１８
と、第２の流体としての酸素血を供給する酸素血供給部
１７とが接続されている。尚、前記外側筒状体６と内側
筒状体７とは、リング状からなり、造影剤の流通に支障
の無いように複数の孔を全体に形成された支持部材１５
により支持されている。In the same figure, the catheter 5 has one end, that is, the tip tJM10 to be inserted into the living body, opened, and a cylindrical outer cylindrical body 6 made of silicone rubber, for example, and a concentric circle inside the outer cylindrical body 6. It has a structure including an inner cylindrical body 7 made of the same material arranged therein. Moreover, these outer cylindrical bodies 6. On the rear end side 16 of the inner cylindrical hole 7, a contrast agent supply section 18 supplies a contrast agent as a first fluid.
and an oxygenated blood supply section 17 that supplies oxygenated blood as a second fluid. The outer cylindrical body 6 and the inner cylindrical body 7 are ring-shaped, and a support member 15 is provided with a plurality of holes formed throughout so as not to hinder the flow of the contrast medium.
Supported by
前記内側筒状体７の先端部には、伸縮性に冨む例えば薄
いシリコンゴム等からなるバルーン部７ａか側壁全周に
亘って形成されている。At the tip of the inner cylindrical body 7, a balloon portion 7a made of a highly elastic material such as thin silicone rubber is formed over the entire circumference of the side wall.
前記外側筒状体６の先端部であって、前記内側筒状体７
のバルーン部７ａよりも後端側には、前記加圧膨出部７
ａと同様に伸縮性に冨む例えば薄いシリコンゴム等から
なるバルーン部６ａが側壁全周に亘って形成されている
。尚、前述したバルーン部はそれぞれ筒状体と同材質に
限らず、他の材質からなるものを用いてもよい。このよ
うなバルーン部６ａ、７ａは内側からの加圧によって外
方向に膨出するので、加圧膨出部と定義する。The tip of the outer cylindrical body 6 and the inner cylindrical body 7
The pressure bulging portion 7 is located on the rear end side of the balloon portion 7a.
A balloon portion 6a made of a highly elastic material such as thin silicone rubber is formed along the entire circumference of the side wall in the same manner as a. Note that the balloon portions described above are not limited to being made of the same material as the cylindrical body, but may be made of other materials. Since such balloon parts 6a and 7a bulge outward due to pressure applied from the inside, they are defined as pressurized bulging parts.
前記造影剤供給部１８は、一定量の造影剤を備蓄する造
影剤プール１３と、この造影剤プール１３から所定流出
量、流出速度で造影剤を外側筒状体６内壁と内側筒状体
７外壁との間８に供給料′ −５−
御する造影剤流出速度／量コントローラ１４とからなっ
ている。尚、この造影剤流出速度／量コントローラ１４
は必ずしも必要ではなく、手操作により行ってもよい。The contrast agent supply unit 18 includes a contrast agent pool 13 that stores a certain amount of contrast agent, and a contrast agent pool 13 that supplies the contrast agent to the inner wall of the outer cylindrical body 6 and the inner cylindrical body 7 at a predetermined flow rate and flow rate. A contrast agent flow rate/amount controller 14 is provided between the outer wall 8 and the contrast agent flow rate/amount controller 14 for controlling the supply amount. Note that this contrast agent outflow rate/amount controller 14
is not necessarily necessary and may be performed manually.
前記酸素血供給部１７は、一定量の酸素血を備蓄する酸
素血プール１１と、この酸素血プール１１から所定流出
量、流出速度で酸素血を内側筒状体内部９に供給制御す
る酸素血流用速度／量コントローラ１２からなっている
。尚、この酸素血流用速度／量コントローラ１２は必ず
しも必要ではなく、手操作により行ってもよい。The oxygen blood supply section 17 includes an oxygen blood pool 11 that stores a certain amount of oxygen blood, and an oxygen blood pool 11 that controls the supply of oxygen blood from the oxygen blood pool 11 to the inner cylindrical body interior 9 at a predetermined flow rate and flow rate. It consists of a diversion rate/volume controller 12. Note that this oxygen blood flow rate/amount controller 12 is not necessarily required, and may be performed manually.
以上説明したカテーテル５の作用、効果について第２図
（ａ）乃至（Ｃ）を参照して説明する。The functions and effects of the catheter 5 described above will be explained with reference to FIGS. 2(a) to (C).
同図（ａ）は、外側筒状体６内壁と内側筒状体７外壁と
の間８．内側筒状体内部９に、それぞれ造影剤、酸素血
を供給しない状態を示すもので、この状態においては、
加圧膨出部７ａ、加圧膨出部６ａは縮んだ状態となって
いる。そして、外側筒状体６内壁と内側筒状体７外壁と
の間８．内側筒状体内部９に、それぞれ造影剤、酸素血
の供給−〇 −
を開始すると同図（ｂ＞に示すようになる。The figure (a) shows the space 8 between the inner wall of the outer cylindrical body 6 and the outer wall of the inner cylindrical body 7. This shows a state in which contrast medium and oxygen blood are not supplied to the inside 9 of the inner cylindrical body, and in this state,
The pressurizing bulge 7a and the pressurizing bulge 6a are in a contracted state. Between the inner wall of the outer cylindrical body 6 and the outer wall of the inner cylindrical body 78. When the supply of contrast medium and oxygen blood to the inside 9 of the inner cylindrical body is started, the state shown in FIG.
同図（ｂ）に示す状態では、外側筒状体６内壁と内側筒
状体７外壁との間８に流通する流体すなわち造影剤の圧
力により、加圧膨出部６ａは側壁外方に少し膨出すると
ともに、造影剤は先端１０から血管内に流出する。従っ
て、カテーテルの操作中において造影剤を注入可能とな
る。この時、内側筒状体８に形成されている加圧膨出部
７ａはまだ膨出していない。この状態から、酸素血流用
速度／量コントローラ１２．造影剤流出速度／鰻コント
ローラ１４を適宜設定してそれぞれの供給量を調整する
と、同図（Ｃ）に示す状態になる。In the state shown in FIG. 6B, the pressure of the fluid, that is, the contrast agent, flowing between the inner wall of the outer cylindrical body 6 and the outer wall of the inner cylindrical body 7 causes the pressurized bulge 6a to move slightly outward from the side wall. As it expands, the contrast agent flows out from the tip 10 into the blood vessel. Therefore, the contrast agent can be injected during operation of the catheter. At this time, the pressurizing bulge 7a formed in the inner cylindrical body 8 has not yet bulged. From this state, the oxygen blood flow rate/volume controller 12. When the contrast agent outflow rate/eel controller 14 is set appropriately to adjust the supply amount of each, the state shown in FIG. 2(C) is obtained.
すなわち、同図（Ｃ）に示す状態では、内側筒状体内部
９に供給される酸素血の圧力に−より、加圧膨出部７ａ
は外側筒状体６内壁と接触するまで膨出した状態になる
とともに、その先端１０からは酸素血が流出される。一
方、外側筒状体６内壁と内側筒状体７外壁との間８に流
通する造影剤は、前記外側筒状体６内壁と接触する状態
まで膨出した加圧膨出部７ａにより閉塞されることにな
る。That is, in the state shown in FIG.
is expanded until it comes into contact with the inner wall of the outer cylindrical body 6, and oxygenated blood flows out from its tip 10. On the other hand, the contrast agent flowing between the inner wall of the outer cylindrical body 6 and the outer wall of the inner cylindrical body 7 is blocked by the pressurized bulge 7a that swells to a state where it comes into contact with the inner wall of the outer cylindrical body 6. That will happen.
このことから、外側筒状体６に形成された加圧膨出部６
ａは、ざらに膨出することになる。From this, the pressurizing bulge 6 formed on the outer cylindrical body 6
A will swell roughly.
以上のようなカテーテル５を、前記第４図に示すような
血管内に挿入した際には、外側筒状体６に形成された加
圧膨出部６ａの膨出により血液が止血された場合であっ
ても、加圧膨出部６ａの下流側の血管に血液を供給でき
るようになる。従って、虚血状態の発生を防止すること
ができ、手術を施される患者の生命に関わる危険な状態
に陥れることを防止することができる。When the catheter 5 as described above is inserted into a blood vessel as shown in FIG. Even in this case, blood can be supplied to the blood vessel downstream of the pressurized bulge 6a. Therefore, it is possible to prevent the occurrence of an ischemic state, and it is possible to prevent the patient undergoing surgery from falling into a life-threatening situation.
尚、本発明は前記図示実施例に限定されず、本発明の要
旨の範囲内で様々に変形実施が可能である。It should be noted that the present invention is not limited to the illustrated embodiments described above, and various modifications can be made within the scope of the gist of the present invention.
例えば第３図に示すような構成としたカテーテルであっ
てもよい。For example, a catheter configured as shown in FIG. 3 may be used.
同図に示すカテーテル２０は、前述した外側筒状体と同
様の構成からなる外側筒状体２１と、この外側筒状体２
１内壁に側壁の一部を接触させた円筒状からなる内側筒
状体２２とを有して構成されている。また、図中２１８
は外側筒状体２１に形成した加圧膨出部、２２ａは内側
筒状体２２に形成した加圧膨出部である。ところで本実
施例では、加圧膨出部２１ａ部分に対応する内側筒状体
２２部分は、外側筒状体２１内壁に接触しないようにし
て、加圧膨出部２１ａの膨出動作に支障のないようにし
ている。The catheter 20 shown in the figure includes an outer cylindrical body 21 having the same structure as the above-described outer cylindrical body, and an outer cylindrical body 21.
1 and an inner cylindrical body 22 having a cylindrical shape with a part of the side wall in contact with the inner wall. Also, 218 in the figure
22a is a pressure bulge formed on the outer cylindrical body 21, and 22a is a pressure bulge formed on the inner cylindrical body 22. By the way, in this embodiment, the inner cylindrical body 22 portion corresponding to the pressurizing bulging portion 21a portion is prevented from contacting the inner wall of the outer cylindrical body 21, so as not to interfere with the expansion operation of the pressurizing bulging portion 21a. I try not to.
このような構成のカテーテル２０であっても、加圧゛膨
出部２２ａが扇子形に広がりなから膨出（図中２３で示
す）して、前述と同様の効果を得ることができる。Even with the catheter 20 having such a configuration, the pressurized bulging portion 22a bulges out (indicated by 23 in the figure) instead of expanding in a fan shape, and the same effect as described above can be obtained.
［発明の効果］ 。[Effect of the invention] .
以上詳述したように本発明によれば、カテーテル挿入中
に造影剤を血管内に流すことができるので、挿入位置の
確認と操作がきわめて容易になる。また、血管内でカテ
ーテルの加圧膨出部を膨出させた際にも、虚血状態の発
生を防止することができるカテーテルの提供ができる。As described in detail above, according to the present invention, a contrast medium can be flowed into a blood vessel during catheter insertion, making it extremely easy to confirm the insertion position and operate the catheter. Furthermore, it is possible to provide a catheter that can prevent the occurrence of an ischemic state even when the pressurized bulging portion of the catheter is bulged within a blood vessel.
第１図は本発明一実施例カテーテル及び接続される装置
類の説明図、第２図（ａ）乃至（Ｃ）はそれぞれカテー
テルの動作説明図、第３図は他の一実施例カテーテルの
説明図、第４図は従来のカテーテルの使用状態図である
。
６ａ、７ａ・・・加圧膨出部、６・・・外側筒状体、７
・・・内側筒状体、１０・・・先端。FIG. 1 is an explanatory diagram of a catheter and connected devices according to one embodiment of the present invention, FIGS. 2(a) to (C) are diagrams each illustrating the operation of the catheter, and FIG. 3 is an explanatory diagram of another embodiment of the catheter. FIG. 4 is a diagram of a conventional catheter in use. 6a, 7a... Pressurized bulge, 6... Outer cylindrical body, 7
...Inner cylindrical body, 10...Tip.
Claims (4)
に配置された内側筒状体とを有し、外側筒状体内壁と内
側筒状体外壁との間には第１の流体を流通させ、内側筒
状体内部には第２の流体を流通させるカテーテルであっ
て、内側筒状体先端部側壁には第２の流体からの圧力に
より側壁外方に膨出する加圧膨出部を設け、外側筒状体
には前記内側筒状体の加圧膨出部の膨出により閉塞され
る第１の流体の圧力により側壁外方に膨出する加圧膨出
部を設けたことを特徴とするカテーテル。(1) Both have an outer cylindrical body with an open tip and an inner cylindrical body disposed inside the outer cylindrical body, and a first fluid is provided between the outer cylindrical body wall and the inner cylindrical outer wall. A catheter that allows a second fluid to flow through the inner cylindrical body, and has a pressurized bulge on the side wall of the distal end of the inner cylindrical body that bulges outward from the side wall due to pressure from the second fluid. The outer cylindrical body is provided with a pressurizing bulge that bulges outward from the side wall due to the pressure of the first fluid that is occluded by the bulging of the pressurizing bulge of the inner cylindrical body. A catheter characterized by:
囲第１項記載のカテーテル。(2) The catheter according to claim 1, wherein the pressurized bulging portion comprises a balloon.
１項記載のカテーテル。(3) The catheter according to claim 1, wherein the first fluid is a contrast agent.
１項記載のカテーテル。(4) The catheter according to claim 1, wherein the second fluid is oxygenated blood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62121106A JPS63286168A (en) | 1987-05-20 | 1987-05-20 | Catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62121106A JPS63286168A (en) | 1987-05-20 | 1987-05-20 | Catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63286168A true JPS63286168A (en) | 1988-11-22 |
Family
ID=14803028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62121106A Pending JPS63286168A (en) | 1987-05-20 | 1987-05-20 | Catheter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63286168A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993020861A1 (en) * | 1992-04-17 | 1993-10-28 | Yoshiharu Kiyota | Intracorporeal heart assisting device |
-
1987
- 1987-05-20 JP JP62121106A patent/JPS63286168A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993020861A1 (en) * | 1992-04-17 | 1993-10-28 | Yoshiharu Kiyota | Intracorporeal heart assisting device |
| US5453076A (en) * | 1992-04-17 | 1995-09-26 | Kiyota; Yoshiharu | Internal cardiac assist apparatus |
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