JPH08131547A - Double lumen catheter provided with baloon - Google Patents

Abstract

PURPOSE: To provide a catheter in which mixing of blood before and after a dialysis process can be prevented by communicating the catheter with a blood dialyzer, setting a catheter tip aperture in the blood flow direction of a vein, and supplying pressure fluid to a baloon to inflate it for stopping flow of blood for extracting blood. CONSTITUTION: A first and a second connectors 13, 14 provided at a back end of a double lumen catheter 1 provided with a baloon are respectively connected to tubes 11, 12 on the entrance side and the exit side extended from a blood dialyzer 2. Next, a tip aperture 7 of the catheter 1 is set in the blood flow direction. Pressure fluid is then supplied from a pressure fluid supply tube 5 to a baloon 6. As the baloon 6 is inflated, a blood vessel inner wall is closed by an outer wall of the baloon 6, and flow of blood is sealed. An active cap 16 is then opened to exract blood. Blood is thus returned from the first connector 13 through the entrance side tube 11, dialyzer 2, exit side tube 12, and the second connector 14.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明はバル−ン付二重ル−メン
カテ−テルに関し、更に詳しくは血液透析前の血液の採
取と血液透析後の血液の返還とを人体の同じ箇所で行う
単針式血液透析用のバル−ン付二重ル−メンカテ−テル
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual lumen catheter with a balloon, and more particularly to a single lumen for collecting blood before hemodialysis and returning blood after hemodialysis at the same site in the human body. A dual lumen catheter with a balloon for needle hemodialysis.

【０００２】[0002]

【従来の技術】従来、血液透析において人体の両腕の静
脈または足の動脈に血液透析前の血液の採取と血液透析
後の血液の返還とを夫々２本の留置針で別々に行ってき
たために、患者にとって負担が大きかった。これを改良
した血液の採取および返還方法として留置針を１本とす
る、いわゆる単針式血液透析方法があるが、返血の際コ
ンバ−タ−を用いて血液の採取および返血の切り換えを
行い、血液透析器の血流を停止したりするために、血液
透析器内に血栓が生じるとともに、血液透析と返血とが
同時に行えないから長い透析時間がかかった。2. Description of the Related Art Conventionally, in hemodialysis, blood before dialysis and blood return after hemodialysis have been separately collected into veins or leg arteries of a human body by two indwelling needles. Moreover, it was a heavy burden on the patient. There is a so-called single-needle hemodialysis method in which one indwelling needle is used as an improved blood collecting and returning method. However, when returning blood, a converter is used to switch between blood collecting and returning. In order to stop the blood flow of the hemodialyzer, a blood clot is generated in the hemodialyzer, and since hemodialysis and blood return cannot be performed at the same time, a long dialysis time is required.

【０００３】[0003]

【発明が解決しようとする課題】この単針式血液透析方
法の欠点を解決した方法として、二重ル−メンカテ−テ
ルの側壁に夫々血液の吸引孔と返血孔とを位置を離して
設け、血液の吸引と血液の返血とを同時に行う方法が考
えられて使用されてきたが、この方法は血液を吸引する
際に吸引孔が血管内壁に付着し、血液の人体への採取が
妨げられるだけでなく、透析処理後の血液が透析処理前
の血液と混合して、再び血液透析器に供給されるので透
析効率が著しく低下する欠点があった。本発明者はこれ
らの欠点を改良するために鋭意検討した結果本発明に到
達した。本発明の目的は透析処理前の血液を透析処理後
の血液と混合しないで円滑に採取することができるカテ
−テルを提供することである。As a method for solving the drawbacks of this single-needle hemodialysis method, a blood suction hole and a blood return hole are provided separately on the side wall of a double lumen catheter. However, a method of simultaneously performing blood suction and blood return has been considered and used, but with this method, when suctioning blood, the suction holes adhere to the inner wall of the blood vessel, which hinders the collection of blood into the human body. In addition, the blood after dialysis treatment is mixed with the blood before dialysis treatment and is supplied to the hemodialyzer again, so that the dialysis efficiency is significantly lowered. The present inventor has arrived at the present invention as a result of extensive studies to improve these drawbacks. An object of the present invention is to provide a catheter capable of smoothly collecting blood before dialysis treatment without mixing with blood after dialysis treatment.

【０００４】[0004]

【課題を解決するための手段】すなわち、本発明は先端
が閉塞された側壁に第１孔口を有する第１カテ−テル
と、先端が開口し該第１カテ−テルと互いに固定して結
合された第２カテ−テルと、前記第１孔口より先端側の
位置に設けられたバル−ンと、該バル−ンに加圧流体を
導入してバル−ンを膨張させる手段とからなるバル−ン
付二重ル−メンカテ−テルである。また本発明は前記バ
ル−ン付二重ル−メンカテ−テルにおいて、バル−ンよ
り先端側の第２カテ−テルの側壁に第２孔口が設けられ
てなるバル−ン付二重ル−メンカテ−テルである。That is, according to the present invention, a first catheter having a first hole opening on a side wall whose tip is closed, and a tip which is open and fixed to the first catheter are coupled to each other. A second catheter, a balloon provided at a position closer to the tip than the first hole opening, and means for introducing a pressurized fluid into the balloon to expand the balloon. It is a double lumen catheter with a balloon. Further, the present invention provides the double-lumen catheter with a balloon, wherein the second double-lumen catheter with a hole is provided in a side wall of the second catheter on the tip side of the balloon. It is a mencatette.

【０００５】[0005]

【作用】本発明カテ−テルの後端開口に夫々設けられた
第１コネクタ−と第２コネクタ−を血液透析器から延び
た入口側チュ−ブと出口側チュ−ブと連結した後、本発
明カテ−テル先端開口を静脈の血液の流れ方向に沿って
留置する。次いで、バル−ンに加圧流体を供給してバル
−ン外壁が血管内壁を封鎖して血液の流れを封止するま
でバル−ンを膨張させる。その後第１カテ−テル後端側
に設けられたクランプを開放して第１孔口から血液を採
取する。第１孔口から採取された血液は第１カテ−テ
ル、第１コネクタ−および入口側チュ−ブを経て血液透
析器に入り、血液透析されて浄化された血液は出口側チ
ュ−ブ、第２コネクタ−および第２カテ−テルを経て先
端開口または／および第２孔口から血管に返血される。
その結果、透析前の血液は透析後の浄化された血液と完
全に分離された状態で採取されるので、透析効率は上昇
する。After connecting the first connector and the second connector respectively provided at the rear end opening of the catheter of the present invention to the inlet tube and the outlet tube extending from the hemodialyzer, Inventive catheter The tip opening is placed along the direction of blood flow in the vein. A pressurized fluid is then supplied to the balloon to inflate it until the outer wall of the balloon seals the inner wall of the blood vessel and seals the blood flow. After that, the clamp provided on the rear end side of the first catheter is opened to collect blood from the first hole opening. Blood collected from the first hole enters the hemodialyzer via the first catheter, the first connector and the inlet tube, and the blood purified by hemodialysis is purified from the outlet tube and the first tube. Blood is returned to the blood vessel from the tip opening and / or the second hole through the 2 connector and the second catheter.
As a result, the blood before dialysis is collected in a state of being completely separated from the purified blood after dialysis, so that the dialysis efficiency is increased.

【０００６】[0006]

【実施例】以下実施例で本発明の一例を説明する。図１
は本発明バル−ン付二重ル−メンカテ−テルの一例を示
す説明図であり、図２は本発明バル−ン付二重ル−メン
カテ−テルの断面図である。図中１はバル−ン付二重ル
−メンカテ−テル、２は血液透析器、３は第１カテ−テ
ル、４は第２カテ−テル、５は加圧流体供給チュ−ブ、
６はバル−ン、７は先端開口、８は第１孔口、９は第２
孔口、10は外環チュ−ブ、11は入口側チュ−ブ、12は出
口側チュ−ブを示す。EXAMPLES An example of the present invention will be described below with reference to examples. FIG.
FIG. 2 is an explanatory view showing an example of the dual lumen-catenary with a balloon of the present invention, and FIG. 2 is a sectional view of the dual lumen-aluminator with the balloon of the present invention. In the figure, 1 is a dual lumen catheter with a balloon, 2 is a hemodialyzer, 3 is a first catheter, 4 is a second catheter, 5 is a pressurized fluid supply tube,
6 is a balloon, 7 is a tip opening, 8 is a first hole opening, 9 is a second
A hole mouth, 10 is an outer ring tube, 11 is an inlet side tube, and 12 is an outlet side tube.

【０００７】図１はバル−ンが膨張して血管内部を封鎖
した状態の本発明バル−ン付二重ル−メンカテ−テルの
一例を示す説明図であり、図２は同じ状態のバル−ン付
二重ル−メンカテ−テルの断面図である。バル−ン付二
重ル−メンカテ−テル１は、バル−ン付二重ル−メンカ
テ−テル１の後端の第１コネクタ−13は血液透析器２の
入口側チュ−ブ11と、第２コネクタ−14は血液透析器２
の出口側チュ−ブ12と夫々連結して人体の血管と閉鎖回
路を形成している。バル−ン付二重ル−メンカテ−テル
１は先端が閉塞された側壁に第１孔口８を有する第１カ
テ−テル３と、第１カテ−テル３と互いに固定して結合
された先端が開口した先端開口７と側壁に第２孔口９と
を有する第２カテ−テル４と、第１孔口８と第２孔口９
との間の位置に設けられたバル−ン６と、バル−ン６に
加圧流体を導入してバル−ンを膨張させるための加圧流
体供給チュ−ブ５とからなっている。FIG. 1 is an explanatory view showing an example of the dual lumen catheter with a balloon of the present invention in a state where the balloon is expanded and the inside of the blood vessel is blocked, and FIG. 2 is a balloon in the same state. FIG. 3 is a cross-sectional view of a double lumen catheter with a connector. The dual lumen catheter 1 with a balloon has a first connector 13 at the rear end of the dual lumen catheter 1 with a balloon and an inlet side tube 11 of the hemodialyzer 2. 2 connector-14 is hemodialyzer 2
Are connected to the outlet side tubes 12 to form a closed circuit with the blood vessel of the human body. The double lumen catheter with a balloon 1 has a first catheter 3 having a first hole 8 in a side wall whose tip is closed, and a tip fixedly connected to the first catheter 3. A second catheter 4 having a tip opening 7 that is open and a second hole 9 on the side wall, a first hole 8 and a second hole 9
And a pressurized fluid supply tube 5 for introducing a pressurized fluid into the balloon 6 to expand the balloon.

【０００８】加圧流体供給チュ−ブ５の後端は加圧流体
供給装置（図示せず）と連結するためにコネクタ−15が
設けられているのが好ましい。第１孔口８はバル−ン６
の後方の第１カテ−テル３の側壁に形成され、第２孔口
９はバル−ン６の前方の第２カテ−テル４の側壁に形成
される。第２孔口９は血液透析器２で血液浄化された血
液が血管に返血される返還孔であり、先端開口７だけで
も血液浄化された血液は血管に返血されるが、バル−ン
６の周辺に血栓が形成されるのを除去するためにも設け
られているのが好ましい。加圧流体としては空気のよう
な気体およびせいり食塩水のような液体が使用される。
バル−ン材料としてはポリウレタン、ポリ塩化ビニル、
ポリエチレン、ポリアミド、ポリエステル、シリコ−ン
樹脂等の可撓性性樹脂が使用される。またカテ−テルと
してはポリ塩化ビニル、ボリエチレン、ポリプロピレン
等の合成樹脂が挙げられる。The rear end of the pressurized fluid supply tube 5 is preferably provided with a connector 15 for connecting to a pressurized fluid supply device (not shown). The first hole 8 is a balloon 6
Is formed on the side wall of the first catheter 3 on the rear side of the above, and the second hole 9 is formed on the side wall of the second catheter 4 on the front side of the balloon 6. The second hole mouth 9 is a return hole through which blood purified by the hemodialyzer 2 is returned to the blood vessel, and the blood purified by the tip opening 7 alone is returned to the blood vessel. It is also preferably provided to eliminate the formation of thrombus around 6. A gas such as air and a liquid such as saline solution are used as the pressurized fluid.
Balloon materials include polyurethane, polyvinyl chloride,
Flexible resins such as polyethylene, polyamide, polyester and silicone resins are used. Examples of the category include synthetic resins such as polyvinyl chloride, polyethylene and polypropylene.

【０００９】第１カテ−テル３、第２カテ−テル４およ
び加圧流体供給チュ−ブ５は外環チュ−ブ10で包囲結合
されて一体化されており、外環チュ−ブ10の側壁には第
１孔口８および第２孔口９が開口され、バル−ン６が形
成されている。外環チュ−ブ10はバル−ン付二重ル−メ
ンカテ−テル１の後方まで形成されており、外環チュ−
ブ10の後端から後方の第１カテ−テル３、代２カテ−テ
ル４および加圧流体チュ−ブ５は夫々分離して第１コネ
クタ−13、第２コネクタ−14および加圧流体チ−ブのコ
ネクタ−15へと延びている。その間に血液および加圧流
体の流通および遮断を調節するための第１活栓16、第２
活栓17および第３活栓18が設けられている。活栓として
は二方活栓、三方活栓、クランプ等が挙げられる。以上
本発明バル−ン付二重ル−メンカテ−テルを血液透析を
中心について説明したが、本発明はこの用途に限定され
るものでない。The first catheter 3, the second catheter 4 and the pressurized fluid supply tube 5 are integrally connected by being surrounded by an outer ring tube 10 so as to be integrated with each other. A first hole opening 8 and a second hole opening 9 are opened in the side wall to form a balloon 6. The outer ring tube 10 is formed up to the rear of the double-lumen catheter 1 with a balloon.
The first cathode 3, the second cathode 4, and the pressurized fluid tube 5 located rearward from the rear end of the tube 10 are separated from each other to separate the first connector 13, the second connector 14 and the pressurized fluid channel. -Connector 15 of the cable. In the meantime, the first stopcock 16 and the second stopcock for controlling the flow and interruption of blood and pressurized fluid.
A stopcock 17 and a third stopcock 18 are provided. Examples of stopcocks include two-way stopcocks, three-way stopcocks, and clamps. Although the dual rumencateter with balloon according to the present invention has been described above mainly for hemodialysis, the present invention is not limited to this application.

【００１０】本発明のバル−ン付二重ル−メンカテ−テ
ルの使用方法は、バル−ン付二重ル−メンカテ−テルの
後端に夫々設けられた第１コネクタ−13と第２コネクタ
−14を血液透析器から延びた入口側チュ−ブ11と出口側
チュ−ブ12と連結した後、バル−ン付二重ル−メンカテ
−テル１の先端開口７を静脈の血液の流れ方向に沿って
留置し、バル−ン付二重ル−メンカテ−テル１、血液透
析器２および人体の血管との間で閉鎖回路を形成する。
次いで、バル−ン６に加圧流体を供給してバル−ン外壁
が血管内壁を封鎖して血液の流れを封止するまでバル−
ン６を膨張させる。その後第１カテ−テル３に設けられ
た活栓16を開放して第１孔口８から血液を採取する。第
１孔口８から採取された血液は第１カテ−テル３、第１
コネクタ−13および入口側チュ−ブ11を経て血液透析器
２に入り、血液透析されて浄化された血液は出口側チュ
−ブ12、第２コネクタ−14および第２カテ−テル４を経
て先端開口７または／および第２孔口９から血管に返血
される。The method of using the dual-lumencatette with balloon according to the present invention is as follows: the first connector-13 and the second connector provided at the rear end of the dual-lumencatetel with balloon, respectively. -14 is connected to the inlet side tube 11 and the outlet side tube 12 extending from the hemodialyzer, and the tip opening 7 of the dual lumen catheter with balloon 1 is connected to the venous blood flow direction. A double-lumen catheter with a balloon 1, a hemodialyzer 2, and a blood vessel of the human body form a closed circuit.
Then, a pressurized fluid is supplied to the balloon 6 until the outer wall of the balloon 6 seals the inner wall of the blood vessel to seal the blood flow.
Inflate 6 After that, the stopcock 16 provided on the first catheter 3 is opened to collect blood from the first hole 8. The blood collected from the first opening 8 is the first catheter 3, the first
Blood which has entered the hemodialyzer 2 through the connector 13 and the inlet tube 11 and has been hemodialyzed and purified has passed through the outlet tube 12, the second connector 14 and the second catheter 4 and has its tip end. Blood is returned to the blood vessel through the opening 7 or / and the second opening 9.

【００１１】[0011]

【発明の効果】本発明バル−ン付二重ル−メンカテ−テ
ルを使用することによって、透析前の血液は透析後の浄
化された血液と完全に分離された状態で円滑に採取され
るので、透析効率は上昇する。EFFECT OF THE INVENTION By using the dual rumencateter with balloon of the present invention, blood before dialysis can be smoothly collected in a state completely separated from purified blood after dialysis. , Dialysis efficiency is increased.

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

【図１】本発明バル−ン付二重ル−メンカテ−テルの一
例を示す説明図FIG. 1 is an explanatory view showing an example of a dual lumen maintenance catheter with a balloon of the present invention.

【図２】本発明バル−ン付二重ル−メンカテ−テルの断
面図FIG. 2 is a cross-sectional view of a double lumen catheter with a balloon according to the present invention.

【符号の表示】[Display of code]

１ バル−ン付二重ル−メンカテ−テル ２ 血液透析器 ３ 第１カテ−テル ４ 第２カテ−テル ５ 加圧流体供給チュ−ブ ６ バル−ン ７ 先端開口 ８ 第１孔口 ９ 第２孔口 10 外環チュ−ブ 11 入口側チュ−ブ 12 出口側チュ−ブ 1 Dual Lumen Catheter with Balloon 2 Hemodialyzer 3 1st Catter 4 2nd Catter 5 Pressurized Fluid Supply Tube 6 Balloon 7 Tip Opening 8 1st Hole 9th 2-hole port 10 Outer ring tube 11 Inlet tube 12 Outlet tube

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 先端が閉塞された側壁に第１孔口を有す
る第１カテ−テルと、先端が開口し該第１カテ−テルと
互いに固定して結合された第２カテ−テルと、前記第１
孔口より先端側の位置に設けられたバル−ンと、該バル
−ンに加圧流体を導入してバル−ンを膨張させる手段と
からなるバル−ン付二重ル−メンカテ−テル。1. A first catheter having a first hole opening in a side wall whose tip is closed, and a second catheter which is opened at the tip and fixedly coupled to the first catheter. The first
A dual-lumen catheter with a balun, comprising a balun provided at a position closer to the tip than the hole mouth and a means for introducing a pressurized fluid into the balun to expand the balun. 【請求項２】 バル−ンより先端側の第２カテ−テルの
側壁に第２孔口が設けられてなる請求項１記載のバル−
ン付二重ル−メンカテ−テル。2. The ball according to claim 1, wherein a second hole port is provided on the side wall of the second catheter on the tip side of the ball.
Double Lumen catheter.