JP4080082B2 - Body fluid treatment circuit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bodily fluid processing circuit constituting a part of a bodily fluid circulation circuit connected to an artificial kidney, a plasma separator, and other bodily fluid processing devices.
[0002]
[Prior Art and Problems to be Solved by the Invention]
The applicant has proposed a circuit for body fluid treatment in which cleaning liquid can be sequentially introduced into the tube from the main tube of the body fluid introduction side circuit in the utility model application publication No. 16677 in 1992, and the inside of the tube can be cleaned.
Recently, the utility model has been commercialized in the form shown in FIG. 4 by each company.
The bodily fluid processing circuit 31 in FIG. 4 has a branching portion 45 arranged in the middle of the branching tubes 35, 35, and a branching portion 45 is connected to a cleaning tube 42 having a connector 43 attached to the tip and a clamp 44 attached in the middle. Since the tip of the tube 35 is connected to the chamber 37 in which the filter 46 is disposed inside and the connection member 40 is connected to the upper portion via the connection tube 47, the number of parts (particularly the number of tubes) increases, and the cost increases. It was. In addition, the branch tubes 35 and 35, the cleaning tube 42, and the connection tube 47 are complicatedly entangled, so that the body fluid processing circuit is complicated and it is difficult to assemble the parts.
Therefore, as a result of intensive studies to solve the above problems, the present inventors have reached the following invention.
[0003]
[Means for Solving the Problems]
[ 1 ] In the present invention, the branch portion (3) is arranged in the middle of the main tube (2) with the connector (4) attached to the tip,
Connect the rear end of the branch tube (5) in the middle of the branch (3) and connect the tip of the branch tube (5) to the lower cap (9) provided at the lower part of the chamber (7),
Connect the rear end of the cleaning tube (12) with the connector (13) attached to the tip of the lower cap (9),
Attach the upper cap (8) with the connecting member (10) to the top of the chamber (7),
The connector (4) and the connector (13) provide a body fluid treatment circuit (1) formed by a connector having a shape that is detachable from each other.
[2] The present invention, the place of the chamber (7), the base of the connecting member (10) is mounted and branched tube (5) and the washing tube (12) connecting member by attaching the tip (10) The body fluid treatment circuit (1) according to [1] is provided, in which a connection base (7A) capable of communicating the liquid flow paths of the branch tube (5) and the cleaning tube (12) is disposed.
[ 3 ] The present invention is described in [1] or [2] , in which a stopper (6, 14) capable of opening and closing a liquid flow path is installed in the middle of the branch tube (5) and the cleaning tube (12). A body fluid processing circuit (1) is provided.
[ 4 ] In the present invention, an external stopper (6, 14) is attached to either the branch tube (5) or the cleaning tube (12), and the stopper tube (6, 14) is not attached. (5) or the cleaning tube (12) is fitted with an internal stopper (16) that can be broken by external pressure to open the liquid flow path of the branch tube (5) or the cleaning tube (12). The body fluid processing circuit (1) according to any one of [1] to [3] is provided.
[0004]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic view of a body fluid processing circuit 1 of the present invention. The bodily fluid processing circuit 1 has a branch portion 3 disposed in the middle of a main tube 2 having a connector 4 attached to the tip thereof, and a connecting tube 10 and a cleaning tube for an infusion container via a branch tube 5 in which a stopper 6 is mounted. It is constituted by connecting the chamber 7 equipped with 12.
The chamber 7 is provided with an upper cap 8 integrally formed with a connecting member 10 at the upper part and a lower cap 9 at the lower part. The lower cap 9 is connected to the distal end of the branch tube 5 and is connected to the rear end of the cleaning tube 12 having a connector 13 attached to the distal end and a stopper 14 in the middle.
As the connector 4 and the connector 13, a combination of shapes that can be attached to and detached from each other is adopted. For example, if the connector 4 is a male connector (female connector), the connector 13 is a female connector (male connector).
The connecting member 10 is preferably a plastic needle that can be pierced directly into the mouth of the infusion container, but may be a connector or the like as long as it can be connected to the mouth of the infusion container.
[0005]
In the present invention, a connection base 7A shown in FIG. The connection base portion 7A is attached with the base portion of the connection member 10 and the distal ends of the branch tube 5 and the cleaning tube 12 so as to communicate the liquid flow paths of the connection member 10, the branch tube 5 and the cleaning tube 12.
[0006]
Any stopper 6 and stopper 14 can be used as long as they can adjust the opening and closing of the liquid flow paths of the branch tube 5 and the cleaning tube 12.
For example, a clamp such as a roll clamp, a dura clamp, a slide lock clamp, a plate clamp, a clip, or a forceps can be used. The clamps and clips are preferably externally attached to the branch tube 5 and the cleaning tube 12 from the time of assembly of the body fluid treatment circuit 1, but can also be externally attached during use in the same manner as forceps.
Further, the external stoppers 6 and 14 are attached to one of the branch tube 5 and the cleaning tube 12, and either the branch tube 5 or the cleaning tube 12 not attached with the stoppers 6 and 14 is subjected to external pressure. A so-called internal stopper 16 that can be broken to open the liquid flow path of the branch tube 5 or the cleaning tube 12 can be mounted. As an example of these stoppers 16, a communication member 16 shown in FIG. 3 is used. The communication member 16 is formed by integrating a small diameter portion 17 and a large diameter portion 19 through a thin portion 18 into a large diameter connecting tube 15 and is disposed between the branch tubes 5 (cleaning tubes 12). . The communication member 16 in FIG. 3 is an example of an internal stopper, and any form of internal stopper can be used as long as the same effect as the communication member can be obtained.
[0007]
The body fluid treatment circuit 1 of the present invention constitutes a part of the vicinity of the upstream of the body fluid introduction side circuit constituting the body fluid circulation circuit, and further downstream of the body fluid introduction side circuit is a body fluid treatment device and a body fluid discharge side circuit. Connected in order.
The shape and structure of the chamber 7 and the connection base portion 7A are not limited to those shown in FIGS. 1 and 2, and in short, any shape and structure can be used as long as both the connection member 10 and the cleaning tube 12 can be mounted simultaneously. The connecting member 10 is preferably integrally molded or implanted on the upper cap 8 or the connecting base 7A, but may be connected to the upper cap 8 or the connecting base 7A via a short connecting tube or the like.
[0008]
Next, an example of how to use the body fluid treatment circuit 1 will be described.
The connector 4 and the connector 13 are connected to make the main tube 2 and the cleaning tube 12 communicate with each other. The mouth of the infusion container is connected to the connecting member 10, the stopper 6 is closed, the stopper 14 is opened, the infusion solution for cleaning is introduced into the chamber 7 from the connecting member 10, and the cleaning tube 12, connector 13, connector 4 is introduced into the main tube 2, and cleaning is performed from the connector 4 to the vicinity of the branch portion 3 of the main tube 2.
Subsequently, the stopper 14 is closed, the stopper 6 is opened, and a new infusion is flowed downstream of the branch portion 3 and the main tube 2 via the branch tube 5, and hereinafter, the body fluid treatment device disposed further downstream, the body fluid outlet side These circuits are cleaned by introducing them to the circuit.
The body fluid processing circuit 1 of the present invention is suitably used for filling and cleaning the priming liquid in the body fluid processing circuit before use, and for cleaning and collecting blood remaining in the body fluid processing circuit after use.
[0009]
Further, the body fluid treatment circuit 1 in which the communication member 16 of FIG. 3 is disposed in the middle of the branch tube 5 as an internal stopper and the external stopper 14 is mounted in the middle of the cleaning tube 12 is used as follows. .
The connector 4 and the connector 13 are connected in the same manner as described above to allow the main tube 2 and the cleaning tube 12 to communicate with each other. After the mouth portion of the infusion container is connected to the connecting member 10, the stopper 14 is opened and the connector 4 is the same as described above. To the vicinity of the branch portion 3 of the main tube 2.
Subsequently, the stopper 14 is closed, the communication member 16 is broken by the external pressure to open the liquid flow path, and then a new infusion is poured downstream of the branch portion 3 and the main tube 2 through the branch tube 5 in the same manner as described above. Cleaning can be performed in the same manner as described above. In this method, the liquid flow path of the branch tube 5 can be closed from the beginning.
[0010]
[Effects of the invention]
The body fluid processing circuit 1 of the present invention has a reduced number of parts (the number of tubes) compared to the conventional body fluid processing circuit 31 and can reduce costs. In addition, it is easy to assemble and can be easily cleaned without being entangled during use.
[Brief description of the drawings]
FIG. 1 is a schematic view of a body fluid treatment circuit according to the present invention. FIG. 2 is a schematic view of a connection base 7A as another embodiment of a chamber 7 of the body fluid treatment circuit 1. FIG. FIG. 4 is a schematic diagram of a conventional body fluid treatment circuit.
1, 31 Body fluid processing circuit 2, 32 Main tube 3, 33 Branch portion 4, 34 Connector 5, 35 Branch tube 6 Stopper 7, 37 Chamber 7A Connection base 8 Upper cap 9 Lower cap 10, 40 Connection member 11, 41 Cap 12, 42 Cleaning tube 13, 43 Connector 14 Stopper 15 Connection tube 16 Communicating member (internal stopper)
17 Small-diameter portion 18 Thin-wall portion 19 Large-diameter portion 36 Clamp 44 Clamp 45 Branching portion 46 Filter 47 Connection tube 48 Connection tube

Claims (4)

Place the branch (3) in the middle of the main tube (2) with the connector (4) attached to the tip,
Connect the rear end of the branch tube (5) in the middle of the branch (3) and connect the tip of the branch tube (5) to the lower cap (9) provided at the lower part of the chamber (7),
Connect the rear end of the cleaning tube (12) with the connector (13) attached to the tip of the lower cap (9),
Attach the upper cap (8) with the connecting member (10) to the top of the chamber (7),
The body fluid treatment circuit (1), wherein the connector (4) and the connector (13) are formed by a connector having a detachable shape. Wherein instead of the chamber (7), connecting member (10) proximal the attachment to and branch tubes (5) and the connecting member by mounting the leading end of the cleaning tube (12) (10) and the branch tube (5) The body fluid treatment circuit (1) according to claim 1, wherein a connection base (7A) capable of communicating with the liquid flow path of the cleaning tube (12) is disposed. The body fluid according to claim 1 or 2 , wherein a stopper (6, 14) capable of opening and closing a liquid flow path is mounted in the middle of the branch tube (5) and the washing tube (12). Processing circuit (1). An external stopper (6, 14) is attached to either the branch tube (5) or the washing tube (12), and the branch tube (5) or the washing tube (not equipped with the stopper (6, 14)) 12. An internal stopper (16) capable of opening the liquid flow path of the branch tube (5) or the cleaning tube (12) by being ruptured by an external pressure is attached to either one of the above (12). The body fluid processing circuit (1) according to any one of claims 1 to 3 .

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