JP2009077870A - Blood purifying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blood purifying device enabling to set a piping space inside a device main body to be small and facilitating the handling of piping. <P>SOLUTION: In the blood purifying device comprising the device main body 1 for performing blood purifying treatment to a patient and a flow path disposed inside the device main body 1 for distributing liquid relating to the blood purifying treatment, a pair of plate materials 7a and 7b disposed facing each other while being separated by a prescribed dimension t, a flexible tube 8 as the flow path is formed at the separation part of the plate materials 7a and 7b, and a connection means 10 such as a pump, a valve or a chamber or the like to be connected to the flexible tube 8 is supported by the plate materials 7a and 7b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a blood purification apparatus including an apparatus main body for performing blood purification treatment on a patient.

  A hemodialysis device for performing hemodialysis (HD) is a device that treats patients with impaired renal function and diffuses blood and dialysate through a semipermeable membrane such as a dialyzer. It is configured to remove excess water by removing solute by ultrafiltration and ultrafiltration. However, conventionally, a flexible tube for circulating the dialysate or dialysate drainage is provided in the apparatus body, and a pump, a valve, a chamber, or the like is connected through the flexible tube. It had been. In addition, since this prior art does not relate to the literature known invention, there is no prior art document information to be described.

  However, in the conventional blood purification apparatus, since the flexible tube disposed in the apparatus main body may be broken or blocked, the flexible tube is disposed to avoid the breakage or the like. It is necessary to set a relatively large space, and there is a problem that the volume for piping increases. In addition, the conventional tube has been difficult to handle because the flexible tube is randomly extended in the apparatus main body.

  The present invention has been made in view of such circumstances, and is to provide a blood purification apparatus that can set a small piping space in the apparatus main body and can easily handle the piping. .

  The invention according to claim 1 is a blood purification apparatus comprising: a device main body for performing blood purification treatment on a patient; and a flow path disposed in the device main body for flowing a liquid related to blood purification treatment. A pair of plates facing each other while being spaced apart from each other by a predetermined dimension, and the flow path is formed in a separation portion of the plates, and connection means such as a pump, a valve, or a chamber to be connected to the flow path It is characterized by being supported by a plate material.

  According to a second aspect of the present invention, in the blood purification apparatus according to the first aspect of the present invention, the spacing portion of the plate material is filled with a filler.

  According to a third aspect of the present invention, in the blood purification apparatus according to the second aspect, the filler is made of a heat insulating material.

  According to a fourth aspect of the present invention, in the blood purification apparatus according to any one of the first to third aspects, the plate member is made of a hard resin.

  According to a fifth aspect of the present invention, in the blood purification apparatus according to any one of the first to fourth aspects, the flow path includes a flexible tube connected in an arbitrary direction by a joint. .

  According to the first aspect of the present invention, the pump and the valve have a pair of plate members arranged to be opposed to each other while being separated by a predetermined dimension, and the flow path is formed in the separation portion of the plate material, and to be connected to the flow path Alternatively, since the connecting means such as the chamber is supported by the plate material, if the separation dimension of the plate material is appropriately set according to the flow path, the piping space in the apparatus main body can be set small, and the piping can be unitized. Can be handled easily.

  According to the second aspect of the present invention, since the separation material of the plate material is filled with the filler, the separation size of the plate material can be maintained, and the flow path can be reliably held in the separation device. .

  According to the invention of claim 3, since the filler is made of a heat insulating material, it is possible to maintain the separation dimension of the plate material and to reliably hold the flow path in the separation part, Heat dissipation of the flowing liquid can be suppressed.

  According to invention of Claim 4, since a board | plate material consists of hard resin, while being able to achieve weight reduction of piping, rigidity can be improved and a connection means can be reliably supported with respect to the said board | plate material.

  According to the invention of claim 5, since the flow path is made of flexible tubes connected in any direction by joints, the conventionally used flexible tube can be used as the flow path.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The blood purification apparatus according to the embodiment includes an apparatus main body for performing blood purification treatment on a patient, and distributes blood and dialysate through a semipermeable membrane such as a dialyzer, thereby removing and limiting solute by diffusion. For removing excess water (water removal) by external filtration, as shown in FIG. 1, the apparatus is mainly composed of an apparatus main body 1 having casters C on the bottom surface and a liquid crystal monitor 6. In this embodiment, the present invention is applied to a multi-purpose dialysis apparatus capable of performing a plurality of types of treatments. However, instead of this, a replacement fluid can be injected into a patient and any one of the above treatments or other It is good also as an apparatus for exclusive use which performs the treatment (plasma exchange, double filtration plasma exchange, etc.) exclusively.

  The apparatus main body 1 includes a blood purification apparatus capable of performing treatment such as hemodialysis (HD), hemodiafiltration (HDF), hemofiltration (HF), or continuous slow blood filtration (CHF), for example, a blood pump. 2, the fluid replacement pump 3, the bubble detector 4, the syringe pump 5, the liquid crystal monitor 6, and the like, are configured to have various devices for performing blood purification treatment on the patient. In addition, a blood pump 2, a replacement fluid pump 3, a bubble detector 4, a syringe pump 5, and the like are disposed on the upper surface 1b of the apparatus body 1, and a liquid crystal monitor 6 is disposed above the upper surface 1b.

  Furthermore, the apparatus main body 1 can support a dialyzer connected to the blood circuit, and is configured to supply dialysate to the dialyzer and discharge the drainage from the dialyzer. As shown in FIGS. 2 and 3, a pair of plate members 7a and 7b are arranged to face each other while being separated by a predetermined dimension t, and various connection means 10 are supported by the plate members 7a and 7b. ing. In this embodiment, for convenience, only a valve (such as a back pressure valve) is supported as a connection means, but other connection means such as a pump or a chamber are also supported.

  In the space between the plate members 7a and 7b, there is disposed a flexible tube 8 that constitutes a flow path for circulating a liquid related to blood purification treatment (dialysis fluid, drainage fluid, or replacement fluid). For example, a heat insulating material 11 (filler) made of polyurethane is filled. The plate member 7a, 7b provided with the flexible tube 8 and the heat insulating material 11 and integrated is referred to as a “pipe unit Y”, and the pipe unit Y is accommodated in the apparatus main body 1 while the apparatus is installed. The main body 1 is detachable.

  The flexible tube 8 constituting the flow path is disposed in a separated portion of the pair of plate members 7a and 7b while being connected in an arbitrary direction by a joint 9. That is, by connecting the flexible tube 8 to the joint 9 having a desired shape to form a flow path, the flow path can be extended in a desired direction between the pair of plate members 7a and 7b. Thereby, blood purification treatment can be performed by allowing dialysate, drainage, etc. to flow through the flexible tube 8 as a flow path.

  Further, as shown in FIG. 4, a connection port P is formed so as to protrude from an arbitrary position of the plate members 7 a and 7 b, and the connection means 10 is connected and supported through the connection port P. The connection port P is inserted and positioned through holes (see FIG. 5) formed at predetermined positions of the plate members 7a and 7b, and the connection means 10 can be connected to the front end side thereof. The connection port P may be fixed to the plate materials 7a and 7b with an adhesive or a screw.

  However, as shown in FIG. 9, the connection port may be composed of one integrally formed with the plate members 7a and 7b (connection port P '). As shown in the figure, the connection port P ′ is composed of a part projecting outward from the plate member 7a (same as the plate member 7b) and a part projecting inward, and on the tip side of the part projecting outward. The connecting means 10 is connected, and the flexible tube 8 is connected to the distal end side of the portion protruding inward.

  The connecting means 10 is composed of a so-called functional component including a pump, a valve, a chamber, or the like connected to the flexible tube 8 constituting the flow path as described above, and the liquid flowing through the flexible tube 8. It is possible to exert a predetermined action on. Note that a metal stay may be fixed to the plate members 7a and 7b, and the connecting means 10 may be placed and fixed on the stay. Furthermore, you may comprise so that conveyance may be made easy by attaching a holding part to the piping unit Y.

  On the other hand, the plate members 7a and 7b are made of a transparent or translucent hard resin, and as shown in FIG. 5, the flexible tube 8 connected to a desired shape by the joint 9 is sandwiched and placed close together. As shown in FIG. 6, it is fixed at a position where the distance between them is t. The separation dimension t may be maintained by filling the above-described heat insulating material 11 or, as shown in FIG. 7, a bolt that can be fixed by inserting a pair of plate members 7a and 7b. It may be maintained at B.

  The separation dimension t between the pair of plate members 7 a and 7 b is set in consideration of the piping volume of the flow path formed by the flexible tube 8. However, according to the present embodiment, the flow path includes the pair of plate members 7a and 7b arranged to face each other while being separated from each other by the predetermined dimension t, and is configured by the flexible tube 8 in the separated portion of the plate members 7a and 7b. Since the connecting means 10 such as a pump, a valve or a chamber to be connected to the flow path is supported by the plate materials 7a and 7b, the separation dimension t of the plate materials 7a and 7b is appropriately set according to the flow path. If set, the piping space in the apparatus main body 1 can be set small.

  Furthermore, since the piping is unitized as the piping unit Y, handling can be facilitated. That is, in this embodiment, since the piping unit Y can be taken out from the apparatus main body 1 and maintenance or the like can be performed, the maintenance is facilitated and workability can be improved. In addition, by preparing the piping unit Y in advance, when a failure occurs in the piping of the apparatus main body 1 during or before treatment, it is possible to take immediate measures by replacing the piping unit Y.

  Moreover, since the heat insulating material 11 is filled in the space between the plate members 7a and 7b, the distance t between the plate members 7a and 7b can be maintained and the liquid flowing through the flow path (flexible tube 8) can be maintained. Heat dissipation can be suppressed. It can replace with the heat insulating material 11, and can be set as the filler which does not have a heat insulating effect or is scarce. Even in this case, since the filler is filled in the separation portion of the plate material, the separation dimension of the plate material can be maintained, and the flow path can be reliably held in the separation portion.

  Furthermore, since the plate members 7a and 7b are made of a hard resin, the plate members 7a and 7b can be reduced in weight as compared with the plate members 7a and 7b made of a metal such as stainless steel, and the rigidity of the plate members 7a and 7b can be improved. The connection means 10 can be reliably supported with respect to 7b. In addition, since the flow path consists of the flexible tube 8 connected to the arbitrary direction by the coupling 9, the flexible tube used conventionally can be diverted as a flow path.

  However, the piping unit Y can be taken out from the apparatus main body 1 as a unit, and maintenance and disassembly can be performed on a work table or the like outside the apparatus main body 1. Workability can be significantly improved as compared with those that perform the work of detaching from the vehicle. Moreover, it can be set as the piping unit of arbitrary specifications by combining suitably the connection means which should be connected. Accordingly, there is no need to store a large number of piping units connected in various forms as connection means, and the manufacturing cost can be reduced and the lead time in the assembly process of the apparatus main body can be shortened.

  Although the present embodiment has been described above, the present invention is not limited thereto. For example, the flow path disposed in the separation portion of the pair of plate members 7a and 7b is a sheet-like one (sheet-like) as shown in FIG. The member may be formed by integrally molding a plurality of flow paths A). Moreover, the wiring of the connection means 10 that needs to be energized (for example, a solenoid valve, a pump, etc.) can be integrated into the piping unit Y. In this way, if the wiring of the connection means that needs to be energized is concentrated in the piping unit Y, the wiring can be attached and detached all at once, and the attachment and detachment of the piping unit Y with respect to the apparatus main body 1 can be facilitated and maintenance and the like can be further performed. It can be done easily.

  In addition to personal dialysers that make dialysate for each device body, a monitoring device that can introduce blood dialysate prepared by other devices (dissolution devices, etc.) and perform blood purification treatment such as dialysis treatment The present invention can also be applied.

  It has a pair of plates facing each other while being spaced apart from each other by a predetermined dimension, and a flow path is formed in the separated portion of the plate, and connection means such as a pump, a valve or a chamber to be connected to the flow path is the plate. As long as the blood purification device is supported by the above, it can be applied to a device having a different external shape or a device to which other functions are added.

The front view which shows the blood purification apparatus which concerns on embodiment of this invention The perspective view which shows the piping unit in the blood purification apparatus which concerns on embodiment of this invention. Front view showing the piping unit IV-IV line sectional view in FIG. A perspective view showing the assembly process of the piping unit A perspective view showing the assembly process of the piping unit Schematic diagram showing an example of plate assembly method in the same piping unit The schematic diagram which shows the flow path of the piping unit in the blood purification apparatus in other embodiment of this invention. The schematic diagram which shows the connection port of the piping unit in the blood purification apparatus in other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Blood pump 3 Fluid replacement pump 4 Bubble detector 5 Syringe pump 6 Liquid crystal monitor 7a, 7b Plate material 8 Flexible tube (flow path)
9 Joint 10 Connection means 11 Heat insulating material Y Piping unit t Separation dimension

Claims (5)

An apparatus body for performing blood purification treatment on a patient;
A flow path disposed in the apparatus main body for circulating a liquid related to blood purification treatment;
In the blood purification apparatus comprising
A pair of plate members arranged opposite to each other while being separated by a predetermined dimension, and the flow path is formed in a separation portion of the plate material, and connection means such as a pump, a valve, or a chamber to be connected to the flow path A blood purification device supported by a plate material.   The blood purification apparatus according to claim 1, wherein a filling material is filled in a separation portion of the plate material.   The blood purification apparatus according to claim 2, wherein the filler is made of a heat insulating material.   The blood purification apparatus according to any one of claims 1 to 3, wherein the plate material is made of a hard resin.   The blood purification apparatus according to any one of claims 1 to 4, wherein the flow path is formed of a flexible tube connected in an arbitrary direction by a joint.

Images