JP2003190280A - Liquid perfusion system for curing encephalic blood vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a doctor directly performing curing using a catheter to simply and safely perform perfusion of heparin supplementary food into the catheter and injection of a contrast medium upon curing the blood vessel in the brain. <P>SOLUTION: This system includes a tube switching unit 7 formed by a manifold 1 and three-way acting plugs 5, 6 mounted in the manifold, an injector 8 connected to one port of the manifold, a first tube 9 connecting another port of the manifold and the base end of a parent catheter C1, a second tube 11 connecting still another port of the manifold and a heparin supplementary food supply source 14, a flash switch 13 disposed in the second tube, a third tube 12 connecting still another port of the manifold and a contrast medium supply source 15, a fourth tube 16 branching off the second tube and connected to the base end of a micro-catheter C2, and a flash switch 17 disposed in the fourth tube. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to perfuse a brain catheter with a heparin-containing diet (physiological saline), inject a contrast agent, etc., while using the brain catheter for intracerebral blood vessel treatment. The present invention relates to a liquid perfusion system.

[0002]

2. Description of the Related Art A brain catheter used for intracerebral blood vessel treatment generally comprises a parent catheter and a child catheter (microcatheter) inserted in the parent catheter. Then, when the brain catheter is inserted into the cerebral blood vessel, heparin-supplemented diet is perfused into the parent catheter and the microcatheter to prevent blood coagulation, and a contrast agent is injected into the parent catheter.

Therefore, as shown in FIG. 5, at the proximal ends of the parent catheter 30 and the microcatheter 31,
The Y-shaped connectors 32 and 33 are respectively connected, and the heparin-added dietary feed tube 3 is connected to the connectors 32 and 33 via three-way branch pipes 35 and 37 equipped with three-way stopcocks 34 and 36, respectively.
8, 39 are connected. In addition, a flash switch 40, in the middle of the heparin-added dietary feed tubes 38, 39,
41 is arranged. And, the three-way stopcocks 34, 36 are normally the heparin-added dietary feed tube 3 for the heparin-added diet.
The catheter is set so that it is supplied to the catheters 30 and 31 from 8, 39, and the flow rate is adjusted so that about 3 ml of heparinized diet is perfused into the catheters 30 and 31 per hour. In this case, the catheters 30, 31 are usually inserted into the arteries, so that blood is transferred during treatment to the catheters 30, 3.
1 may flow back into the catheter 1. At that time, the flash switches 40 and 41 are pressed, and a large amount of heparin-added diet is temporarily supplied into the catheters 30 and 31. It is released to the outside of 30, 31 to prevent blood coagulation.

When it becomes necessary to inject a contrast medium into the parent catheter 30, a three-way branch pipe 35 on the parent catheter 30 side is provided.
To the branch line to which the tube is not connected, the spout of a syringe filled with a contrast agent (not shown) is connected, and then the three-way stopcock 34 closes the heparin-fed dietary supply tube 38 and The connector 32 is set so as to be connected to the branch pipe, and the contrast medium is injected from the syringe into the parent catheter 30.

According to this conventional configuration, the flash switches 40 and 41 are located away from the doctor who directly performs the treatment by the catheter, and it is not easy for the doctor to operate by himself, and the operation is not possible. An assistant may be in charge. In this case, the flash switches 40, 41
It is necessary to perform the operation of [1] quite frequently during the treatment, and it is desirable that the doctor directly performing the treatment can easily operate the flash switches 40 and 41. Further, when connecting the syringe filled with the contrast agent to the three-way branch pipe 35, air may be mixed.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a doctor who directly carries out the treatment with a catheter during the treatment of cerebral blood vessels by performing the operation of perfusion of heparin-added diet or injection of a contrast agent into the catheter. It's about making it easy, accurate, and safe.

[0007]

In order to solve the above-mentioned problems, according to the present invention, when a brain catheter consisting of a parent catheter and a microcatheter inserted in the parent catheter is inserted into a blood vessel in the brain, A method for perfusing a liquid into a catheter, comprising: a main conduit and at least two branch conduits branched from the main conduit and arranged at intervals in the length direction of the main conduit; A conduit switching unit consisting of a three-way stopcock arranged in each of the branched parts of the conduit in the manifold, a syringe connected to one port of the manifold, and one end connected to another port of the manifold, A first tube having the other end connected to the proximal end of the parent catheter, and one end of each of the further ports of the manifold At least a second connected to
And a third tube, a flash switch arranged in the vicinity of a connection portion of the second tube with the manifold, and a parent switch and a microcatheter connected to the other end of the second tube at all times. A source of a first liquid to be perfused in an amount and a source of a second liquid connected to the other end of the third tube to optionally infuse the parent catheter; A second tube that branches from the middle of the second tube and has a distal end connected to the base end of the microcatheter; and a flash switch arranged in the middle of the fourth tube. A liquid perfusion system for treating intracerebral blood vessels is constructed.

In the above construction, preferably, the first
The second liquid is composed of a heparin-added diet, and the second liquid is composed of a contrast medium. Also preferably, the syringe is
In the conduit switching unit, it is connected to a port on one end side of the main conduit of the manifold, and one end of the first tube is connected to a port on the other end side of the main conduit of the manifold.

In order to solve the above-mentioned problems, according to the present invention, when a brain catheter consisting of a parent catheter and a microcatheter inserted in the parent catheter is inserted into an intracerebral blood vessel, liquid to the brain catheter is introduced. The main conduit and the two branching from the main conduit and spaced apart in the length direction of the main conduit.
Pipe switching unit consisting of a manifold consisting of two branch pipes and three-way stopcocks arranged at each branch of the pipe in the manifold, and a syringe connected to a port on one end side of the main pipe of the manifold A first tube having one end connected to a port on the other end side of the main conduit of the manifold and the other end connected to a proximal end of the parent catheter, and one end of one branch conduit of the manifold. A second tube connected to the port, a flash switch arranged near the connection part of the second tube with the manifold, and a source of heparin-added diet connected to the other end of the second tube And one end,
A third tube connected to the port of the other branch conduit of the manifold, a supply source of the contrast agent connected to the other end of the third tube, and a branch from the middle of the second tube. A cerebral blood vessel treatment characterized by having a fourth tube having a distal end connected to the proximal end of the microcatheter and a flash switch arranged in the middle of the fourth tube. A liquid perfusion system is constructed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. The liquid perfusion system for intracerebral vascular treatment according to the present invention performs perfusion of liquid to a brain catheter when a brain catheter consisting of a parent catheter and a microcatheter inserted in the parent catheter is inserted into a brain blood vessel. 1 is a diagram schematically showing an overall configuration of a liquid perfusion system for treating cerebral blood vessels according to an embodiment of the present invention, and FIG. 2 is a main part of a parent catheter-side liquid perfusion unit in the system of FIG. FIG. 3 is a view showing a main part of the microcatheter side liquid perfusion part in the system of FIG. 1.

As shown in FIGS. 1 to 3, the liquid perfusion system for treating cerebral blood vessels according to the present invention has a main conduit 2 and a branch from the main conduit 2 which is arranged at intervals along the length of the main conduit. Of at least two, in this embodiment, two manifolds 3 and 4 and three-way stopcocks 5 and 6 arranged at each branch of the manifold 1 And a switching unit 7. In FIG. 2, 5a and 6a are three-way stopcocks 5, respectively.
And 6 are control levers, and these control levers 5a, 6
The conduit indicated by the tip of a is closed. In the state shown in FIG. 2, the branch conduit 3 side is closed by one three-way stopcock 5, the branch conduit 4 side is closed by the other three-way stopcock 6, and the first side through the main conduit 2 from the syringe 8. The conduit leading to the tube 9 is open.

A syringe 8 is connected to one port of the manifold 1, which is a port 2a on one end side of the main conduit 2 in this embodiment, and another port of the manifold 1, that is, the other end of the main conduit 2 in this embodiment. The first tube 9 is connected to the side port 2b. The other end of the first tube 9 is connected to the base end of the parent catheter C1 via a Y-shaped connector 10. Further, a three-way branch pipe 19 provided with a three-way stopcock 18 is arranged near the connection portion of the first tube 9 with the Y-shaped connector 10 as required.

A second tube 11 and a third tube 1 are provided at each of the further ports of the manifold 1.
The two ends are connected to each other. In this embodiment, the second
One end of the tube 11 of the manifold 1 is connected to the port 4a of one branch conduit 4 of the manifold 1, and one end of the third tube 12 is connected to the port 3a of the other branch conduit 3 of the manifold 1.
connected to a. A flash switch 13 is arranged near the connection portion of the second tube 11 with the manifold 1.

The other end of the second tube 11 is connected to a first liquid, which is a heparin-supplemented dietary source 14 in this embodiment, which is to be constantly perfused to the parent catheter C1 and the microcatheter C2. It Further, the other end of the third tube 12 is connected to a second liquid, which is a contrast medium supply source 15 in this embodiment, which is to be injected into the parent catheter C1 as needed.

The fourth tube 16 branches off from the middle of the second tube 11, and the tip of the fourth tube 16 passes through a Y-shaped connector 22 and a three-way branch pipe 21 having a three-way stopcock 20. And is connected to the proximal end of the microcatheter C2. Three-way branch pipe 2 with three-way stopcock 20
1 is arranged as needed. Needless to say, when the three-way branch pipe 21 provided with the three-way stopcock 20 is omitted, the tip of the fourth tube 16 is directly connected to the Y-shaped connector 22. A flash switch 17 is arranged on the upstream side of the three-way branch pipe 21 in the fourth tube (on the upstream side of the Y-shaped connector 22 when the three-way branch pipe 21 is omitted).

Next, a method of operating the liquid perfusion system for treating cerebral blood vessels of the present invention will be described. Brain catheter C
In the cerebral blood vessel treatment by 1 and C2, the three-way stopcocks 5 and 6 of the duct switching unit 7 are always set as shown in FIG. 4 (A). In this way, in the pipe branch part of the three-way stopcock 5, the branch pipe 3 is closed, while the three-way stopcock 6
At the pipe branch part, the syringe side of the main pipe line 2 is closed, and the branch pipe line 4 and the catheter side of the main pipe line 2 communicate with each other. Then, the first liquid (heparin-added diet in this embodiment) is adjusted so as to be perfused into the parent catheter C1 at a constant rate. At the same time, the microcatheter C
In No. 2, the first liquid (heparin-added diet) is adjusted to be perfused at a constant rate. On the other hand, the second liquid (contrast agent in this example) is not injected into the catheter.

When blood flows back into the parent catheter C1, the flash switch 13 provided on the second tube 11 is pressed, and a high pressure and a large amount of the first liquid (heparin-added diet) is temporarily generated. The blood perfused by the parent catheter C1 and flowing back is discharged to the outside of the parent catheter C1. Further, when blood flows back into the microcatheter C2, the flash switch 17 provided in the fourth tube 16 is pressed, and a high pressure and a large amount of the first liquid (heparin-containing diet) is temporarily generated in the microcatheter. The blood perfused by the catheter C2 and flowing back is discharged to the outside of the microcatheter C2.

When it becomes necessary to inject the second liquid (contrast agent in this embodiment) into the parent catheter C1, first, the three-way stopcocks 5 and 6 of the conduit switching unit 7 are shown in FIG. 4 (B). Set as shown. In this way, at the branching portion of the three-way stopcock 5, the catheter side of the main conduit 2 is closed, and the branch conduit 3 communicates with the inside of the syringe 8. Even during this period, the perfusion of the heparin-supplemented diet to the parent catheter C1 is continued. And a syringe 8
After the interior is filled with the contrast agent, the three-way stopcocks 5 and 6 of the duct switching unit 7 are set as shown in FIG. 4 (C). In this way, the branch conduit 3 is closed at the branch of the three-way stopcock 5, and the syringe side and the catheter side of the main conduit 2 communicate with each other, while the branch conduit at the branch of the three-way stopcock 6 is connected. 4 is closed, and the syringe side and the catheter side of the main pipeline 2 communicate with each other. Then, while the perfusion of the heparin-added diet is stopped, the second liquid (contrast agent) filled in the syringe 8 is injected into the parent catheter C1.

As described above, according to the liquid perfusion system for treating cerebral blood vessels according to the present invention, the source of the first liquid (heparin-added diet) to be perfused to the parent catheter C1 and the microcatheter C2 at a constant rate. By making common, the conduit system becomes simpler, the space occupied by the system in the operating room is reduced, and the replacement work of the supply source becomes easier. In addition, the second liquid (contrast agent) can be injected into the parent catheter C1 very simply by operating the three-way stopcocks 5 and 6 of the conduit switching unit 7 and switching the conduits, and to the syringe 8. Since the syringe 8 is not separated from the duct system when the second liquid (contrast agent) is filled, the contrast agent can be safely injected without accidentally mixing air into the syringe. it can. Further, an operation unit for liquid perfusion during intracerebral vascular treatment, such as disposing a flash switch 13 for the first liquid (heparinized diet) perfused by the parent catheter C1 in the vicinity of the duct switching unit 7, etc. Since most of them are centrally arranged in the conduit switching unit 7, a doctor who directly carries out the treatment by the catheter can easily perform the liquid perfusion operation himself.

[0020]

As described above, according to the present invention, a doctor who directly carries out treatment with a catheter during the treatment of cerebral blood vessels can easily perform the operation of perfusion of heparin-added diet and injection of a contrast agent into the catheter. And it can be done accurately, safely.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing an overall configuration of a liquid perfusion system for treating cerebral blood vessels according to an embodiment of the present invention.

FIG. 2 is a view showing a main part of a parent catheter-side liquid perfusion unit in the system of FIG.

FIG. 3 is a view showing a main part of a microcatheter-side liquid perfusion unit in the system of FIG.

FIG. 4 is a diagram illustrating a series of pipeline switching operations of the pipeline switching unit in the system of FIG.

FIG. 5 is a view showing a schematic configuration of a conventional liquid perfusion system for treating cerebral blood vessels.

[Explanation of symbols]

1 manifold 2 main pipeline 3 and 4 branch lines 5, 6 3-way stopcock 7 Pipe switching unit 8 syringes 9 First tube 10 Y-type connector 11 Second tube 12 Third Tube 13 Flash switch 14 Source of the first liquid (heparin-added diet) 15 Source of second liquid (contrast agent) 16 Fourth Tube 17 Flash switch C1 parent catheter C2 micro catheter

Claims (4)

[Claims] 1. A method for perfusing a liquid into the brain catheter when the brain catheter comprising a parent catheter and a microcatheter inserted in the parent catheter is inserted into a blood vessel in the brain. A manifold comprising at least two branch conduits branched from the main conduit and arranged at intervals in the length direction of the main conduit, and a three-way stopcock arranged at each branch portion of the conduits in the manifold. And a syringe connected to one port of the manifold, a first tube having one end connected to another port of the manifold and the other end connected to a proximal end of the parent catheter. And at least second and third tubes each having one end connected to each of the further ports of the manifold, Note: A flush switch disposed near the connection portion of the second tube with the manifold, and the parent catheter and the microcatheter connected to the other end of the second tube should be constantly perfused with a constant amount. A first liquid supply source, a second liquid supply source that is connected to the other end of the third tube and should be injected into the parent catheter as necessary, and the middle of the second tube A brain characterized in that it has a fourth tube that branches off from the distal end and is connected to the proximal end of the microcatheter, and a flash switch that is arranged in the middle of the fourth tube. Liquid perfusion system for endovascular treatment. 2. The liquid perfusion system for intracerebral vascular treatment according to claim 1, wherein the first liquid comprises heparin-added diet and the second liquid comprises contrast medium. 3. The syringe is connected to a port on one end side of a main pipe line of the manifold in the pipe line switching unit, and one end of the first tube is connected to a port on the other end side of the main pipe line of the manifold. The liquid perfusion system for intracerebral vascular treatment according to claim 1 or 2, which is connected. 4. A method for perfusing a liquid into the brain catheter when the brain catheter, which comprises a parent catheter and a microcatheter inserted into the parent catheter, is inserted into a blood vessel in the brain, the main conduit, and From a manifold consisting of two branch pipes branched from the main pipe and spaced apart in the length direction of the main pipe, and three-way stopcocks arranged at each of the branch portions of the pipe in the manifold. A conduit switching unit, a syringe connected to a port on one end side of the main conduit of the manifold, one end connected to a port on the other end side of the main conduit of the manifold, and the other end on the proximal end of the parent catheter A first tube connected to the second tube, a second tube having one end connected to a port of one branch line of the manifold, and a second tube connected to the second tube. A flush switch disposed near the connection portion with the manifold, a supply source of heparin-added diet connected to the other end of the second tube, and one end of which is connected to a port of the other branch conduit of the manifold. A connected third tube, a supply source of the contrast agent connected to the other end of the third tube, a branch from the middle of the second tube, and a distal end of the microcatheter. A liquid perfusion system for intracerebral vascular treatment, comprising: a connected fourth tube; and a flash switch arranged in the middle of the fourth tube.