JP2016022225A - Blood purification circuit panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blood purification circuit panel capable of constituting a blood purification circuit by preparing a panel in which other components or the like are previously built in, and easily and reliably fitting a tube to the panel.SOLUTION: A blood purification circuit panel comprises: a panel formed of two bonded sheets; a first connection part that constitutes a part of the blood purification circuit, one end of which is positioned at a part of an outer periphery of the panel and that is disposed clamped by the respective sheets; a second connection part, one end of which is positioned at the other part of the outer periphery of the panel and that is disposed clamped by the respective sheets; and a first tube that is disposed between the first connection part and the second connection part and fitted to the other end of the first connection part and the other end of the second connection part. A second tube to be disposed at the outer peripheral side of the panel, is fitted to the one end of the first connection part. A third tube to be disposed at the outer peripheral side of the panel, is fitted to the one end of the second connection part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a blood purification circuit panel, for example, a blood purification circuit panel including a dialyzer.

  For example, a blood purification circuit including a dialyzer is disclosed in, for example, Patent Documents 1 and 2 below.

  The dialyzer incorporates a plurality of (8000 to 20000) thin tubes made of artificial membrane, and blood from the blood inflow tube flows out from the blood outflow tube through these thin tubes. In the dialyzer, the dialysate from the dialysate inflow pipe flows out of each narrow tube and then flows out from the dialysate outflow pipe. Thereby, substance exchange is performed between the blood and the dialysate through the membrane of the thin tube, unnecessary substances move to the dialysate, and useful substances move into the blood.

  For this reason, around the dialyzer, a pump that allows blood to flow into and out of the dialyzer, a pump that allows the dialysate to flow into and out of the dialyzer, a filter that filters the dialysate, and other necessary parts can be attached via tubes. It has become.

  However, each of these components is physically separated from the other components, and each component must be connected by a tube, which makes the work extremely complicated.

JP-A-5-161836 Japanese Patent No. 3831048

  The present invention has been made in view of such circumstances, and an object of the present invention is to prepare a panel in which other parts and the like have been previously incorporated, and by attaching a tube to this panel easily and reliably, blood An object of the present invention is to provide a blood purification circuit panel that can constitute a purification circuit.

The present invention is grasped by the following composition.
(1) The blood purification circuit panel of the present invention comprises a panel formed by two sheets bonded together and a part of the blood purification circuit, and one end is positioned at a part of the outer periphery of the panel. A first connecting portion disposed between two sheets; a second connecting portion disposed at one end of the other periphery of the panel and sandwiched between the two sheets; and the first A first tube disposed between the connecting portion and the second connecting portion and fitted to the other end of the first connecting portion and the other end of the second connecting portion; and The second tube disposed on the outer peripheral side of the panel is fitted to one end thereof, and the third tube disposed on the outer peripheral side of the panel is fitted to one end of the second connecting portion. It is characterized by being.
(2) The blood purification circuit panel according to the present invention is characterized in that, in the configuration of (1), the connecting portion has a diameter smaller than both ends at substantially the center in the axial direction.
(3) The blood purification circuit panel of the present invention is characterized in that, in the configuration of (1), the connecting portion has a diameter that decreases from one end side to the other end side at least on the outer peripheral surface.
(4) The blood purification circuit panel of the present invention is characterized in that, in the configuration of (1) or (2), the connecting portion is disposed with a central axis positioned in a plane including the panel.

  According to the blood purification circuit panel of the present invention, it is possible to prepare a panel in which other components and the like are incorporated in advance, and it is possible to configure the blood purification circuit by attaching a tube to this panel easily and reliably.

It is a front view which shows Embodiment 1 of the blood purification circuit panel by this invention. It is sectional drawing in the AA of FIG. It is sectional drawing which took the cross section at the boundary of each sheet | seat of a panel. It is a reverse view which shows Embodiment 1 of the blood purification circuit panel by this invention. It is an enlarged view of the dashed-dotted line frame B of FIG. It is sectional drawing in the CC line of FIG. It is a top view of the connection part used for the blood purification circuit panel by this invention. (A) is sectional drawing in the EE line | wire of FIG. 7, (b) is sectional drawing in the FF line | wire of FIG. It is a schematic diagram which shows the outline of a tube pump. It is sectional drawing in the GG line of FIG. It is a block diagram which shows the other Example of the attaching part of a panel and a dialyzer. It is the figure which showed Embodiment 3 of this invention and was matched and drawn to FIG. It is the figure which showed Embodiment 4 of this invention and was matched and drawn with FIG.8 (b).

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment.

(Embodiment 1)
FIG. 1 is a front view showing Embodiment 1 of a blood purification circuit panel according to the present invention. 2 is a cross-sectional view taken along line AA in FIG.

  The blood purification circuit panel 10 shown in FIG. 1 first has a plate-like panel 20 arranged perpendicular to the ground surface. The panel 20 has a rectangular shape. For example, the horizontal width is slightly larger than the vertical width.

  As will be apparent from the description below, this panel 20 is formed by two sheets of resin material (indicated by reference numerals 21 and 22 in FIG. 2) that are attached to each other, and is hollow at the interface of this sheet. A flow path is formed so that a tube or a connecting pipe (insert) is sandwiched.

  A dialyzer 30 attached from one side (front side in the figure) of the panel is attached to the approximate center of the panel 20. The dialyzer 30 has a cylindrical shape and is attached to the panel 20 with its longitudinal direction aligned with the vertical direction. The dialyzer 30 has a length that is slightly larger than the vertical width of the panel 20 and is attached so as to protrude above the upper side of the panel 20 and below the lower side at each end.

  Here, a schematic configuration of the dialyzer 30 will be described. Blood is introduced into the cylindrical dialyzer 30 whose both ends are sealed from the blood inflow tube portion 31 on the upper end surface, and the purified blood is discharged from the blood outflow tube portion 32 on the lower end surface. It is like that. Inside the dialyzer 30, a plurality of (8000 to 20000) artificial tubes (indicated by reference numeral 33 in FIG. 2) are disposed along the axial direction of the dialyzer 30. Is supposed to flow in.

  The dialyzer 30 is adapted to receive dialysate from a dialysate inflow pipe section (flow pipe section) 34 on the lower end side, and a dialysate outflow pipe section (flow pipe) on the upper end side face. Part) 35 is allowed to flow out of the dialysate. The dialysate flows to the outside of the narrow tube 33 in the dialyzer 30, whereby the substance is exchanged between the blood and the dialysate through the membrane of the narrow tube 33, and unnecessary substances move to the dialysate. Useful substances are supposed to move into the blood.

  The dialyzer 30 is attached to the panel 20 as follows. FIG. 3 is a view showing the panel 20 in a state where the dialyzer 30 is not yet attached in FIG. A mounting piece 23 </ b> A extending vertically upward is formed substantially at the center of the upper side of the panel 20. The mounting piece 23A is formed with a notch 24A that is notched in the horizontal direction from one of the vertical sides. The notch 24A has a pair of constrictions so that the inner peripheral portion on the depth side opposite to the opening side has a semicircular arc shape, and the width of the notch 24A is narrowed in the inner peripheral portions facing each other on the opening side. It has a shape having a portion (for example, a convex portion) 25A. Similarly, an attachment piece 23 </ b> B extending vertically downward is formed at substantially the center of the lower side of the panel 20. The mounting piece 23B is formed with a cutout 24B cut out in the horizontal direction. In this case, the direction in which the notch 24B of the mounting piece 23B is cut is the same as the direction in which the notch 24A of the mounting piece 23A is cut, for example. FIG. 3 is a cross-sectional view taken at the boundary between the sheets 21 and 22.

  FIG. 4 is a view of the blood purification circuit panel 10 shown in FIG. 1 as viewed from the back side. In FIG. 4, the notch 24A of the attachment piece 23A of the panel 20 and the notch 24B of the attachment piece 23B are respectively provided with a flange part 40A formed around the dialysate outflow pipe part 35 of the dialyzer 30 and the dialysis. A flange portion 40B formed around the pipe of the liquid inflow pipe portion 34 is fitted.

  FIG. 5 shows an enlarged view of the alternate long and short dash line frame B in FIG. In FIG. 5, the flange portion 40A formed in the dialysate outflow pipe portion 35 is formed of a circular plate material, and the maximum diameter is formed to be slightly larger than the diameter of the notch 24A of the attachment piece 23A. 6 is a cross-sectional view taken along the line CC of FIG. In FIG. 6, the flange portion 40 </ b> A has a certain thickness, and an annular groove 41 </ b> A is formed along the circumferential direction in the central portion of the peripheral side surface. In the annular groove 41, the inner peripheral portion of the notch 24A of the mounting piece 23A is fitted. The configuration shown in FIG. 5 is the same in the case of the notch 24B of the mounting piece 23B formed on the lower side of the panel 20 and the flange 40B formed in the dialysate inflow pipe portion 34 of the dialyzer 30. .

  In such a configuration, the dialyzer 30 is fixed to the panel 20 in the annular grooves 41A and 41B of the flange portions 40A and 40B of the dialyzer 30 within the notches 24A and 24B of the corresponding mounting pieces 23A and 23B of the panel 20. The peripheral portions are engaged, and the constricted portions 25A and 25B are ridden and fitted into the notches 24A and 24B. Thus, the flange portions 40A and 40B fitted in the notches 24A and 24B are configured so as not to be easily detached from the notches 24A and 24B by the narrowed portions 25A and 25B. Further, the flange portions 40A, 40B are engaged with the inner peripheral portions of the cutouts 24A, 24B of the mounting pieces 23A, 23B in the annular grooves 41A, 41B, and the displacement in the axial direction is restricted. For this reason, the dialyzer 30 can be easily and reliably attached to the panel 20.

  Returning to FIG. 1, in the region on one side (right side in the drawing) of the panel 20 on the panel 20, for example, a notch 24 slightly cut away on the dialyzer 30 side is formed at the center of the side. . A connecting portion (first connecting portion) 50 and a connecting portion (second connecting portion) 51 made of a resin material are formed in each of the narrow portions of the upper and lower panels 20 of the notch 24. The connection part 50 and the connection part 51 are made of a cylindrical member, are sandwiched between sheets 21 and 22 constituting the panel 20 (see FIG. 2), and are arranged coaxially. As shown in FIG. 7, which is an enlarged view, the connecting portion 50 is configured such that an external tube (second tube) 601 is inserted on the upper side of the panel 20, and a pump tube ( A first tube 61 is inserted. 8A is a cross-sectional view taken along line EE in FIG. 7, and FIG. 8B is a cross-sectional view taken along line FF in FIG. As shown in FIG. 8B, the connecting portion 50 has a small outer diameter r on the external tube 601 side and an inner diameter into which the external tube 601 can be inserted, and a large external diameter on the pump tube 61 side. It has a diameter R and an inner diameter into which the pump tube 61 can be inserted. And the connection part 50 becomes a shape which has the constriction 50A in the approximate center of the axial direction. The connecting portion 50 having such a shape is sandwiched between the sheets 21 and 22, and has an effect that the axial displacement can be reliably controlled by positioning the central axis in a plane including the panel 20. . The connecting portion 51 has substantially the same configuration as the connecting portion 50, and is arranged such that the large diameter side is on the notch portion 24 side of the panel 20 and the small diameter side is on the lower side of the panel 20. An external tube (third tube) 602 is inserted into the end surface on the lower side of the panel 20 of the connecting portion 51.

  Thereby, as shown in FIG. 1, the pump tube 61 can be arranged in the notch 24 of the panel 20. The pump tube 61 is a constituent member of the tube pump, and the fluid in the pump tube 61 can be sent in one direction by driving the pump tube. The blood or dialysate sent from the pump tube is sent into the dialyzer 30 via the blood inflow pipe 31 or the dialysate inflow pipe 34. FIG. 9 is a schematic diagram showing an outline of the tube pump. In FIG. 9, a rotating body 62 is disposed adjacent to the pump tube 61, and the rotating body 62 is provided with a plurality of (for example, four) rollers 63 along the circumferential direction thereof. As the rotating body 62 rotates, the rollers 63 move in one direction while sequentially pressing a part of the pump tube 61 in the longitudinal direction. For this reason, the fluid in the pump tube 61 is sent in the same direction by the negative pressure generated in the pump tube 61.

  Returning to FIG. 1, a hollow flow path 70 extending from the upper side to the lower side of the panel 20 is formed in the region between the pump tube 61 and the dialyzer 30 of the panel 20. As shown in FIG. 10, which is a cross-sectional view taken along the line GG in FIG. 1, the hollow flow path 70 is a hollow flow of one sheet 21 in the panel 20 formed by bonding the two sheets 21 and 22. A recess (for example, a semicircular cross section) is formed in the region where the path 70 is formed so as to have a gap between the other sheet 22 and one of the other sheets 22 is formed in the region where the hollow flow path 70 is formed. It can be configured by forming a recessed portion (for example, a semicircular cross section) so as to have a gap with the sheet 21.

  The hollow channel 70 is formed with a hollow chamber 71 having a relatively large area in the middle of the path, and the other side from the hollow chamber 71 to one side of the panel 20 (for example, the upper side in FIG. 1). The hollow flow path 70 'is formed. Thereby, the hollow flow paths 70 and 70 'can be configured as branch flow paths or merge flow paths by changing the flow of fluid.

  At each end of the hollow channels 70 and 70 'on the panel 20, there are a connecting portion 73 (see FIG. 2) and a connecting portion 74 (see FIG. 2) made of a cylindrical member arranged coaxially with the hollow channels 70 and 70'. 2), the connecting portion 75 is disposed so as to be sandwiched between the sheets 21 and 22 (see FIG. 2). The connecting portion 73, the connecting portion 74, and the end surface of the connecting portion 75 that are substantially flush with the upper side and the lower side of the panel 20 have an inner diameter into which an external tube (not shown) is inserted.

  As shown in FIG. 1, an opening 25 is formed adjacent to the dialyzer 30 in the region on the other side (left side in the figure) of the panel 20 from the dialyzer 30. A connecting portion (first connecting portion) 76 and a connecting portion (second connecting portion) 77 are formed in each of the narrow portions of the upper and lower panels 20 of the opening 25. The connecting portion 76 and the connecting portion 77 have substantially the same configuration as the connecting portion 50, and are sandwiched between the sheets 21 and 22 constituting the panel 20 (see FIG. 2).

  A pump tube (first tube) 78 having one end inserted into the connecting portion 76 and the other end inserted into the connecting portion 77 is disposed in the opening 25 of the panel 20. Further, an external tube (second tube) 603 is inserted into the end surface on the upper side of the panel 20 of the connecting portion 76, and an external tube (third tube) 604 is inserted into the end surface of the lower side of the panel 20 of the connecting portion 77. It has come to be. The pump tube 78 is a constituent member of the tube pump similarly to the pump tube 61 described above, and the fluid in the pump tube 78 can be sent in one direction by driving the tube pump. Thereby, the blood or dialysate sent from the pump tube is sent into the dialyzer 30 via the blood inflow pipe 31 or the dialysate inflow pipe 34.

  In addition, in the region of the panel 20 outside the pump tube 78, hollow flow paths 80 and 90 extending from the upper side to the lower side of the panel 20 are arranged in parallel. These hollow channels 80 and 90 have the same configuration.

  Here, the hollow flow path 80 is a straight flow path that is not a branch flow path or a merge flow path as compared with the hollow flow path 70 described above, and is a connecting portion ( The first connecting portion 81 and the connecting portion (second connecting portion) 82 have substantially the same configuration as the connecting portion 50 having a constriction at the center. As shown in FIG. 3, the connecting portion 81 and the connecting portion 82 are connected by a tube (first tube) 83 made of a resin material. The tube 83 is a sheet together with the connecting portion 81 and the connecting portion 82. 21 and 22 are sandwiched. As a result, the inner diameter of the hollow flow path 80 is matched with the diameters of the end portions having the larger outer diameters of the connecting portion 81 and the connecting portion 82 and is larger than the inner diameter of the hollow flow path 70. An external tube (second tube) 605 is inserted into the connecting portion 81, and an external tube (third tube) 606 is inserted into the connecting portion 82.

The thus configured blood purification circuit panel 10 can configure (mount) a blood purification circuit including a dialyzer 30, a tube pump and the like on the panel 20 using an external tube.
In addition, although the sheet | seats 21 and 22 and each connection part showed forming with the resin material, polyolefin, such as polyethylene or a polypropylene, acrylonitrile butadiene styrene (ABS), styrene butadiene copolymer (SBC), for example ), Styrene resin such as polystyrene, polycarbonate, polymethyl methacrylate resin (PMMA), vinyl chloride resin, styrene elastomer, fluororesin, polysulfone, and the like.
Furthermore, it is preferable that the connecting portions 50 and 51 are formed of a resin material by injection molding or the like in advance, can be bonded to the tube, and are integrally welded and fixed while being sandwiched between the sheets 21 and 22. Therefore, the resin material constituting the connecting portion can be selected from, for example, polycarbonate, vinyl chloride resin, acrylonitrile-butadiene-styrene (ABS), polymethyl methacrylate resin (PMMA), and the like.

(Embodiment 2)
The cutouts 24A and 24B formed in the mounting pieces 23A and 23B of the panel 20 shown in the first embodiment have a shape cut out in the horizontal direction from the vertical sides. However, when the attachment piece 23A is shown as an example, the shape shown in FIG. That is, as shown in FIG. 11, the notch 24A may have an inverted 'L' shape that is notched in the horizontal direction from the vertical side of the mounting piece 23A and then notched in the hanging direction. Good. The notch 24A notched in the drooping direction has a semicircular arc shape on the inner peripheral portion on the depth side, and a narrowed portion 25A for narrowing the notch is formed in the bent portion from the horizontal direction to the drooping direction. ing.

  Even in this case, the inner peripheral portion of the notch 24A of the mounting piece 23A is engaged with the annular groove 41A of the flange portion 40A, and the convex portion 24A rides up and is fitted into the notch 24A. The flange portion 40A fitted into the 24A is configured so as not to be easily detached from the notch 24A by the convex portion 24A.

(Embodiment 3)
In the first embodiment, the dialysate inflow pipe portion 34 and the dialysate outflow pipe portion 35 of the dialyzer 30 in the mounting pieces 23A and 23B of the panel 20 are attached via the flange portions 40A and 40B. However, the present invention is not limited to this, and it may be attached at the dialysate inflow pipe portion 34 and the dialysate outflow pipe portion 35 where the flange portions 40A and 40B are not formed. FIG. 12 shows such an embodiment, and is a diagram drawn in association with FIG.
As shown in FIG. 12, the attachment piece 23A of the panel 20 is fitted into the dialysate outflow pipe portion 35 between the dialyzer 30 and the flange portion 40A. The notch 24A of the mounting piece 23A in this case has a narrowed portion 25A as shown in FIG. 3, for example, and the dialysate outflow pipe portion 35 rides on the narrowed portion 25A of the mounting piece 23A and enters the notch 24A It is designed to be fitted. The flange portion 40 </ b> A can prevent the attachment piece 23 </ b> A of the panel 20 from coming off from the dialysate outflow pipe portion 35.

(Embodiment 4)
The connecting portion (for example, the connecting portion 50) shown in the first embodiment has a shape having a constriction 50A at substantially the center in the axial direction as shown in FIG. 8B. However, the present invention is not limited to this, and the outer diameter of at least the outer peripheral surface of the connecting portion may be tapered from one end to the other end. FIG. 13 shows the structure of such a connecting portion, and is a diagram drawn in association with FIG. As shown in FIG. 13, for example, the connecting portion 50 ′ has a shape having tapers 50 </ b> A ′ and 50 </ b> B ′ from the pump tube 61 to the external tube 601, for example, the outer shape and the inner diameter are both small. The connecting portion 50 ′ having such a shape has an effect that the axial displacement can be regulated with high reliability by being sandwiched between the sheets 21 and 22.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the description of the scope of claims that embodiments with such changes or improvements can also be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Blood purification circuit panel 20 Panel 21, 22 Sheet 24 Notch part 25 Opening part 23A, 23B Attachment piece 24A, 24B Notch 25A, 25B Narrow part (convex part)
30 dialyzer 31 blood inflow pipe section 32 blood outflow pipe section 33 thin tube 34 dialysate inflow pipe section (circulation pipe section)
35 Dialysate outflow pipe (circulation pipe)
40A, 40B flange portion 41A annular groove 50 connecting portion (first connecting portion)
50A constriction 51 connecting part (second connecting part)
601 External tube (second tube)
61 Pump tube (first tube)
62 Rotating body 63 Roller 70, 70 'Hollow flow path 71 Hollow chamber 76 Connection part (1st connection part)
77 Connecting part (second connecting part)
78 Pump tube (first tube)
80 Hollow flow path 81 Connection part (1st connection part)
82 connecting part (second connecting part)
83 Tube (first tube)

Claims (4)

A panel equipped with a blood purification circuit,
A panel formed of two sheets bonded together;
Part of the blood purification circuit;
A first connecting part, one end of which is positioned at a part of the outer periphery of the panel and is disposed between the two sheets;
A second connecting part, one end of which is positioned at the other part of the outer periphery of the panel and sandwiched between the two sheets;
A first tube disposed between the first connecting portion and the second connecting portion and fitted to the other end of the first connecting portion and the other end of the second connecting portion;
With
A second tube disposed on the outer peripheral side of the panel is fitted to one end of the first connecting portion,
A blood purification circuit panel, wherein a third tube disposed on the outer peripheral side of the panel is fitted to one end of the second connecting portion.   2. The blood purification circuit panel according to claim 1, wherein the connecting portion has a diameter smaller than both ends at a substantially center in an axial direction thereof.   2. The blood purification circuit panel according to claim 1, wherein the diameter of the connecting portion decreases from one end side to the other end side at least on the outer peripheral surface. The blood purification circuit panel according to claim 1, wherein the connecting portion is disposed with a central axis positioned in a plane including the panel.

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