JPS6268464A - Chamber for blood circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A 1M Industry 0 Fields of Application The present invention comprises 9 blood circuits for artificial kidneys 2 blood circuits for artificial livers;
This relates to chambers used in other blood circuits.

As shown in Figure 7, the conventional art blood circuit for an artificial kidney consists of an arterial circuit (1) that extracts blood from a patient's vein and leads it to a dialysis machine, and an arterial circuit (1) that extracts blood from a patient's vein and leads it to a dialysis machine, and a blood circuit that carries the dialyzed blood through the dialysis machine to the patient's vein. When using the venous circuit (2), the main body of the arterial chamber (3) and the main body of the venous chamber (4) are connected to a hanging device (5) such as a hanging ring attached to them. ,
(6) hangs the dialysis machine, blood pump, heparin infusion machine, patient, etc. in a position well above the blood inflow tube (force, (8)) connected to each chamber body (31, (4)). and blood outflow tubes (91, (11) hanging from each chamber body (31, (41), the blood inflow tube (7) is connected to the patient's artery via the needle (Lυ), and the blood outflow tube ( 9) is connected to the inlet of the dialysis machine via the connector (I), and the blood inflow -
A tube (8) is connected to the outlet of the dialysis machine via a connector (13) and to the patient's vein via a blood outflow tube (11 is needle Q4).

In conventional blood circuits for artificial kidneys, the main body of the arterial chamber,
Blood inflow tubes are respectively connected to ends of the venous chamber bodies that become upper ends when they are suspended (hereinafter referred to as upper ends).

A blood outflow tube was connected to each end opposite to the upper end (hereinafter referred to as the lower end).

/'% Problems to be Solved by the Invention The above-mentioned conventional blood circuit for an artificial kidney has the following problems.

■ The tubes (7) and (8) connected to the upper ends of each chamber body (3) and (4) are
), U-turn part (1s, (16) near the top of (4)
is formed, and when a force is applied to each chamber body (3), (4) in the direction of pulling them down, a U-turn portion (I5
．． There is a risk that the wall of the house e may bend and block the flow of the Jl111 liquid, so please do not
．． (Care must be taken not to bend IF5.

■ In each chamber body (3), (4>), after the blood falls through the air above the chamber, filtering networks αη, α
When passing through the intestines, air bubbles may be mixed into the blood, and bubbles tend to occur on the upstream side of the filter net αη, and some of the air bubbles on the upstream side of the α barrel may The air bubbles are swept downstream from the meshes of the filtering nets (17) and (18) by the flow, and the air bubbles are likely to mix into the blood filtered by the filtering nets α force and α peak.

■ The world of blood that fills the entire circuit, that is, the priming volume, flows from the part of each tube (71, (81) corresponding to the lower end of each chamber body (3L (4)) to each chamber body (3), (4 ) increases by the amount of blood filled in the area leading to the upper trap.

■ In the circuit manufacturing process, each chamber body (3)
, (4) Since the work of connecting the tube to the upper end and the work of connecting the tube to the lower end must be performed separately, manufacturing is time-consuming.

■ Tubes hang down from the upper and lower ends of each chamber body (3L (4J), making handling and operation of the tubes troublesome.

Means for Solving the Problems with Problems The present invention provides 1 blood circuit for an artificial kidney, 1 a blood circuit for an artificial liver,
In other blood circuits, the present invention attempts to provide a blood circuit chamber that can solve the above conventional problems by connecting a blood inflow tube and a blood outflow tape to the lower end of the chamber body. The present invention will be described in detail below based on FIG. 1 of the drawings. α9 is the arterial chamber body of the blood circuit for an artificial kidney;
A blood inlet (support) and a blood outlet CD are provided at the lower end, and a suspension ring and a level adjustment line (to) are provided at the upper end. C41 is a filtering net supported in the chamber body α9 so as to communicate with the blood inflow port (7), (251 is a blood inflow tube, one end is connected to the blood inflow port (■), and the other end is connected to the blood inflow port (7). Connect the shunt fitting CO to attach the needle, and in the middle of the tube there is a pump action tube end pressed by the blood pump, a fluid replacement tube,
Heparin line/29° Rubber tubes (7) for blood collection and mixed injection are connected respectively. 6υ is a blood outflow tube, one end is connected to the blood outflow port Cυ, and the other end is
Connector C33 is connected to the inlet of the dialysis machine.

Zeng is the main body of the venous chamber of the blood circuit for the artificial kidney, with a blood inlet (b) and a blood outlet (c) at the bottom end.

The upper end is provided with a suspension ring (c16), a level adjustment line (13), and a pressure monitor line (to). 4 is the chamber body G3, which is supported so as to communicate with the blood inflow port (goods);
One end connects to the blood inlet (2) and the other end has a connector kl)' for connecting to the outlet of the dialysis machine
is connected to. (c) is a blood outflow tube.

One end is connected to a blood outflow port (G), and the other end is connected to a shunt joint 03 for attaching a needle 03'.

Arterial chamber main body Q9 and venous chamber main body Q″f!:
Dialysis machine, blood pump, by hanging ring (c) and (to)
Suspend 9 above the head/injection machine and patient. Then, the blood inflow tube □□□ and the blood outflow tube r31) hang down from the lower end of the arterial chamber body α field, and the blood inflow tube decoy and the blood outflow tube α2 hang down from the lower end of the venous chamber main body Q.

In this state, connect the blood inflow tube I needle (A)' to the patient's vein, and connect the blood outflow tube Gυ to the connector 0.
An arterial circuit is formed by connecting the blood inflow tube (40) to the inlet of the dialysis machine via the connector (41).
A venous circuit is formed by connecting the blood outflow tube (4) to the patient's vein through the needle tube and the pumping tube @ by the blood pump. When pressed, blood from the patient's vein flows from below through the blood inflow tube (c) into the arterial chamber main body l, passes through the filtering net T241 and is filtered, and this filtered blood flows into the arterial chamber. It flows out from under the main body (I bell) and is sent to the dialysis machine through the blood outflow tube 0υ.

The blood dialyzed by the dialysis machine is passed through the blood inflow tube (4G
It flows from below into the vein chamber body (c) through
The blood is filtered through a filtering net 69, and the filtered blood flows out from below the venous chamber body.

Blood is pumped through the outflow tube (ear J) into the patient's vein.

Example of arterial chamber main body 9. As shown in FIGS. 2 and 3, the main body of the venous chamber (c) consists of a blood inlet (47) and a blood outlet (
A blood inflow tube 4 and a blood outflow tube mark are connected to the outer ends of these tubes, and a blood outflow port (4S is provided with a funnel shape at the inner end to allow the blood to flow out smoothly). An elongated groove 62 surrounding the blood inlet (blood inlet 07 at the inner end of the 4-force) is provided in the groove 62.

At the time of the upper frame and both ends of the lower frame ci41 are vertical frames 551. L'1fi
J to each other, and connect the blood inlet (47) to the lower frame 64).
The lower frame C14) of the filter 61), which is formed by covering the entire left and right openings of the frame body (to) provided with the through hole 57) t- with the filter net 5G1.160), is fitted and fixed. , the filter 6υ may be configured to stand upright from the inner surface of the end plate he. In addition.

A groove similar to the groove 152 may be provided in the opening 9 instead of the opening 6υ, and a lower frame of a filter similar to the filter 6υ may be fitted and fixed in the groove.In this case, the filter (6L' is omitted) Good too,
You don't have to omit it. In addition, the blood inlet (4) is located on the inner surface of the end plate ■.
7) and a groove (63) surrounding the blood outflow port (4119).

In these six grooves, both ends of the upper and lower frame needles are attached to the vertical frame tb5).
A partition wall (67) k is provided to separate the space surrounded by these frames into left and right sides, which are joined together with a trowel, and blood inflow ports (67) are provided on both sides of the partition wall (67) in the lower frame.
47) and the entire filtration network (71) of the left and right openings of the frame ffcl, which is formed by providing a shaft and a through hole that communicates with the blood outflow port, respectively, and the two-fi filter σ~ that is covered with a trowel. In some cases, the lower frame is fitted and fixed, and the filter C73) is configured to stand upright from the inner surface of the end plate (C73).Also, the arterial chamber main body C1l and the venous chamber main body (G) are .

In addition to being configured so that they are separated from each other and hung separately as shown in the first figure, both chamber bodies (one
! J, [Yes] are connected by the connecting plate (7 (a)), and the connecting plate (7 (a)
4) may be provided with a through hole σ5) for hanging, or other hanging tools or hanging portions may be provided.

Although the above embodiment describes a chamber for a blood circuit for two artificial kidneys, the present invention is not limited thereto, and may be implemented as a chamber for a blood circuit for nine artificial livers or other blood circuits. One or more chamber bodies may be used depending on the circuit.

Nine Effects Since the present invention is configured as described above, it has the following effects.

■ Chamber body 1 For example, when the arterial chamber body and the venous chamber body are suspended, the blood inflow tube and the blood outflow tube will hang down at the bottom of each chamber body, and the blood inflow tube will hang down near the top of each chamber body, as in the past. There is no possibility that the tube wall of the blood inflow tube will break.

■ Inside the chamber body, blood enters from the bottom and exits from the bottom, which prevents air bubbles from entering and forming bubbles, and also prevents air bubbles from entering the blood filtered through the filter net.

■ Compared to the conventional case where the blood inflow tube is connected to the upper end of the chamber body, the length of the tube can be shortened, so the priming volume can be reduced.

■ During the circuit manufacturing process, tube connections can be made only at the bottom end of the chamber body.

It saves manufacturing time and improves manufacturing efficiency.

■ The tube hangs only from the bottom end of the chamber body, making it easier to handle and manipulate the tube.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a blood circuit for an artificial kidney incorporating a blood circuit chamber according to the present invention, FIG. 2 is a longitudinal cross-sectional view of a main part of an embodiment of the present invention, and FIG. 4 is a longitudinal sectional view of the main part of another embodiment of the present invention, FIG. 5 is a sectional view taken along B-Bi of FIG. 4, and FIG. FIG. 7, which is a diagram showing an embodiment, is an explanatory diagram of a conventional blood circuit for an artificial kidney. (lj...Arterial chamber body, 129...Blood inflow tube, C3υ...Blood outflow tube, can...
Vein chamber body, (401...Blood inflow tube, (4z...Blood outflow tube O) Patent applicant: Representative of To-Iko Co., Ltd. Patent attorney: Ya, Toga;- Figure 1, Figure 6, Figure 7 Figure ゛te′ //-7

Claims (2)

[Claims] (1) A blood circuit chamber characterized in that a blood inflow tube and a blood outflow tube are connected to the lower end of the chamber body. (2) The blood circuit chamber is composed of an arterial chamber and a venous chamber of a blood circuit for an artificial kidney.