Blood purification device

Abstract

To secure drip-proof property while suppressing an occurrence of electromagnetic interference, and execute maintenance of the inside of a device easily by enabling a side wall to be carried easily.SOLUTION: A blood purifier includes a body part and a side wall 20. The body part includes a metal frame. The side wall 20 is detachably provided in the body part. The side wall 20 includes an outer surface part 30 and inner surface parts 40 layered on the outer surface part 30, and disposed facing the inside of the body part. The inner surface parts 40 have conductivity by including a conductive material. The outer surface part 30 is composed of a material whose specific gravity is smaller than the specific gravity of the conductive material. A drip-proof seal member 60 disposed along an edge 41 of the inner surface parts 40, and shield elastic bodies 70 and 71 electrically conducted with the metal frame are attached to the inner surface parts 40.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a blood purification device. [Background technology]

[0002] Japanese Patent Laid-Open Publication No. 2007-37563 (Patent Document 1) is a prior art document disclosing the configuration of a composite pump unit for a dialysis apparatus. The composite pump unit for a dialysis apparatus described in Patent Document 1 includes a console panel made of synthetic resin, a composite pump unit base made of synthetic resin, a blood pump body, and a syringe pump body. The composite pump unit base has a rotor housing for the blood pump and a syringe base for the syringe pump, which are fixed to the surface of the console panel. The blood pump body is detachably attached to the rotor housing for the blood pump. The syringe pump body is detachably attached to the syringe base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-37563 Summary of the Invention [Problem to be solved by the invention]

[0004] Blood purification devices are required to be drip-proof while suppressing electromagnetic interference, and to allow easy maintenance of the inside of the device. The blood purification device described in Patent Document 1 has a console panel in which the front and side walls are integrally formed, so it is not possible to easily remove the side walls to perform maintenance on the inside of the device.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a blood purification device that suppresses the generation of electromagnetic interference, ensures drip-proofness, and has side walls that make it easy to carry and facilitate maintenance of the inside of the device. [Means for solving the problem]

[0006] The blood purification device according to the present invention comprises a main body and a side wall. The main body includes a metal frame. The side wall is detachably attached to the main body. The side wall includes an outer surface and an inner surface laminated on the outer surface and facing the inside of the main body. The inner surface is conductive by containing a conductive material. The outer surface is made of a material with a lower specific gravity than the conductive material. A drip-proof seal member arranged along the edge of the inner surface and a shielding elastic body electrically conductive with the metal frame are attached to the inner surface.

[0007] In one embodiment of the present invention, the outer surface portion is made of insulating resin.

[0008] In one embodiment of the present invention, the edge of the outer surface portion protrudes toward the inside of the main body portion, and the inner peripheral surface of the edge of the outer surface portion and the outer peripheral surface of the inner surface portion face each other.

[0009] In one embodiment of the present invention, the inner surface is made of a metal plate, a metal mesh, or a pearlite plate coated with a coating of the above-mentioned conductive material.

[0010] In one embodiment of the present invention, a handle is provided on the outer surface of the side wall, and a part of the shield elastic body is disposed in the vicinity of the handle when viewed from a direction perpendicular to the inner surface. [Effects of the Invention]

[0011] According to the present invention, the occurrence of electromagnetic interference is suppressed, drip-proofness is ensured, and the side walls are easy to carry, allowing for easy maintenance of the inside of the device. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view of a blood purification apparatus according to an embodiment of the present invention, seen from above on the right side. [Figure 2]1 is a perspective view of a blood purification apparatus according to an embodiment of the present invention, viewed from above on the left side. [Figure 3] 1 is a side view of a blood purification apparatus according to an embodiment of the present invention, as viewed from the right side. [Figure 4] FIG. 4 is a plan view of the blood purification apparatus of FIG. 3, seen from the direction of arrow IV. [Figure 5] FIG. 2 is an enlarged front view showing a syringe pump and a guard provided in the blood purification apparatus according to one embodiment of the present invention. [Figure 6] 1 is a view of a side wall of a blood purification apparatus according to an embodiment of the present invention, viewed from the inner surface side. [Figure 7] FIG. 7 is an enlarged view of part VII in FIG. 6. [Figure 8] 8 is a view of the side wall of FIG. 7 as seen from the direction of arrow VIII. DETAILED DESCRIPTION OF THE INVENTION

[0013] A blood purification apparatus according to one embodiment of the present invention will be described below with reference to the drawings. In the following description of the embodiment, the same or corresponding parts in the drawings will be given the same reference numerals, and their description will not be repeated.

[0014] The blood purification device according to this embodiment can be used for any of Continuous Renal Replacement Therapy (CRRT), Continuous Hemodiafiltration (CHDF), Continuous Hemofiltration (CHF), Continuous Hemodialysis (CHD), and Slow Continuous Ultrafiltration (SCUF). The blood purification device according to this embodiment can be used in various locations within a hospital, such as an operating room, intensive care unit, emergency room, patient room, or preparation room.

[0015] Fig. 1 is a perspective view of a blood purification apparatus according to one embodiment of the present invention, seen from above on the right side. Fig. 2 is a perspective view of a blood purification apparatus according to one embodiment of the present invention, seen from above on the left side. Fig. 3 is a side view of a blood purification apparatus according to one embodiment of the present invention, seen from the right side. Fig. 4 is a plan view of the blood purification apparatus of Fig. 3, seen from the direction of arrow IV. Fig. 5 is an enlarged front view of a syringe pump and guard provided in a blood purification apparatus according to one embodiment of the present invention.

[0016] As shown in FIGS. 1 to 5, a blood purification apparatus 1 according to one embodiment of the present invention includes a syringe pump 80, a main body 10, a side wall 20, and a guard 50. The syringe pump 80 has a slide 81 that moves the plunger of the syringe in the axial direction (X-axis direction). That is, the slide 81 is configured to be movable in the axial direction (X-axis direction) while holding the plunger of the syringe. The syringe pump 80 has a tip 82 on one side of the slide 81 in the axial direction (X-axis direction). The syringe pump 80 is a general-purpose syringe pump that can be mounted on a dialysis machine having a general width dimension (X-axis direction).

[0017] As shown in FIGS. 1 to 5, a syringe pump 80 is attached to the main body 10 so that the axial direction (X-axis direction) is horizontal. Various devices such as a blood pump are provided on the front surface 11 of the main body 10. A display is disposed above the main body 10. A control unit of the blood purification device 1 and the like are disposed inside the main body 10. As shown in FIG. 2, the main body 10 includes a metal frame 13. As shown in FIGS. 1, 2, 4, and 5, a recess 12 that accommodates a slide portion 81 is formed in the main body 10. A side wall 20 is detachably provided on the main body 10.

[0018] In the blood purification device 1 according to one embodiment of the present invention, as shown in Fig. 4, the width of the main body 10 in the X-axis direction is narrow, and a general-purpose syringe pump 80 is mounted thereon, so that the sliding portion 81 protrudes outward from the side wall 20 when moved in one of the axial directions (X-axis direction), as shown in Fig. 5. The width of the main body 10 in the X-axis direction is, for example, 400 mm or less.

[0019] Fig. 6 is a view of the side wall of a blood purification apparatus according to one embodiment of the present invention, viewed from the inner surface side. Fig. 7 is an enlarged view of part VII in Fig. 6. Fig. 8 is a view of the side wall in Fig. 7, viewed from the direction of arrow VIII.

[0020] As shown in Figures 1, 3, 4, and 6 to 8, the side wall 20 includes an outer surface portion 30 and an inner surface portion 40 that is laminated on the outer surface portion 30 and faces the inside of the main body portion 10. In this embodiment, the outer surface portion 30 and the inner surface portion 40 are fastened together with screws. The outer surface portion 30 and the inner surface portion 40 may also be bonded together with a bonding material. The mass of the side wall 20 is, for example, 1 kg or less.

[0021] The inner surface portion 40 is conductive by containing a conductive material. In this embodiment, the inner surface portion 40 is made of a metal plate. The inner surface portion 40 is made of a metal material such as an aluminum alloy or a copper alloy as a conductive material. The inner surface portion 40 may also be made of a metal mesh or a pearlite plate coated with a coating of a conductive material. The thickness of the inner surface portion 40 is, for example, 2 mm or less.

[0022] 6 to 8, a drip-proof seal member 60 disposed along the edge 41 of the inner surface portion 40, and shielding elastic bodies 70 and 71 electrically connected to the metal frame 13 are attached to the inner surface portion 40 by an adhesive or the like. The shielding elastic bodies 70 and 71 are joined to the inner surface portion 40 by a conductive adhesive or solder or the like so as to be electrically connected to the inner surface portion 40.

[0023] The drip-proof sealing member 60 is compressed in the X-axis direction when the side wall 20 is attached to the main body 10, filling the gap between the side wall 20 and the main body 10 and preventing droplets dripping from above from penetrating into the inside of the main body 10.

[0024] The drip-proof seal member 60 is made of a rubber material such as ethylene propylene diene rubber, vinylidene fluoride rubber, flame-retardant rubber (FR), chloroprene rubber, silicone rubber, or styrene butadiene rubber.

[0025] When the side wall 20 is attached to the main body 10, the shielding elastic bodies 70, 71 are sandwiched between the metal frame 13 and the inner surface 40 and compressed in the X-axis direction, ensuring electrical continuity between the metal frame 13 and the inner surface 40.

[0026] The shielding elastic bodies 70 and 71 are shielding gaskets or shielding fingers. The shielding gasket is made of a core material made of rubber such as urethane and a conductive film formed on the surface of the core material. The shielding fingers are made of a conductive material with high elasticity such as a copper alloy.

[0027] The outer surface portion 30 is made of a material having a lighter specific gravity than the conductive material contained in the inner surface portion 40. In this embodiment, the outer surface portion 30 is made of an insulating resin such as an epoxy resin. As shown in FIGS. 6 to 8, the edge 31 of the outer surface portion 30 protrudes toward the inside of the main body portion 10. As shown in FIG. 7, the inner peripheral surface 31s of the edge 31 of the outer surface portion 30 and the outer peripheral surface 41s of the inner surface portion 40 face each other. In other words, the inner surface portion 40 is housed inside the edge 31 of the outer surface portion 30. The thickness of the portion of the outer surface portion 30 other than the edge 31 is 2 mm or more.

[0028] 6, a U-shaped portion 32 is formed on the edge 31 of the outer surface portion 30, and is recessed along the recess 12 of the main body portion 10. That is, a U-shaped portion 32 is formed on the edge of the side wall 20, and is recessed along the recess 12 of the main body portion 10.

[0029] As shown in FIGS. 1 to 6, the guard 50 is provided on the outer surface 30 of the side wall 20. The guard 50 has a grippable handle 51. That is, the handle 51 is provided on the outer surface 30 of the side wall 20. In this embodiment, the guard 50 is made of a highly rigid and lightweight material such as an aluminum alloy.

[0030] 5, guard 50 faces, at a distance, tip 82 of slide portion 81 that protrudes outward from side wall 20 when slide portion 81 has moved to the furthest position in one of the axial directions (X-axis direction). Specifically, handle portion 51 faces, at a distance, tip 82 of slide portion 81 that protrudes outward from side wall 20 when slide portion 81 has moved to the furthest position in one of the axial directions (X-axis direction). This allows guard 50 to surround and protect the periphery of the range of motion of syringe pump 80.

[0031] 1 and 3 to 5, the guard 50 has a connecting portion 52 that contacts the side wall 20 along the U-shaped portion 32 at the edge of the side wall 20. As shown in FIG. 3, the handle portion 51 extends so as to linearly connect both ends 52e of the U-shaped connecting portion 52 when viewed in a direction perpendicular to the side wall 20 (the X-axis direction). In this embodiment, as shown in FIG. 6, the connecting portion 52 is fixed to the outer surface portion 30 with a screw.

[0032] 3 and 4, a groove 53 extending in the vertical direction (Z-axis direction) is formed on a contact surface 52s of the connecting portion 52 with the side wall 20. This forms a drainage groove penetrating in the vertical direction between the outer surface portion 30 and the connecting portion 52.

[0033] 6, the shielding elastic body 71 is disposed near the handle portion 51 when viewed from a direction (X-axis direction) perpendicular to the inner surface portion 40. In this embodiment, the shielding elastic body 71 is disposed along the connecting portion 52 when viewed from a direction (X-axis direction) perpendicular to the inner surface portion 40.

[0034] In the blood purification device 1 according to one embodiment of the present invention, the syringe pump 80 has a slide portion 81 that moves the plunger of the syringe in the axial direction (X-axis direction). The syringe pump 80 is attached to the main body 10 so that the axial direction (X-axis direction) is horizontal. The side wall 20 is detachably attached to the main body 10. The slide portion 81 protrudes outward from the side wall 20 when moved in one of the axial directions (X-axis direction). This allows the width of the main body 10 to be narrowed, while the side wall 20 can be removed to facilitate maintenance of the inside of the device. Furthermore, by installing a general-purpose syringe pump 80, the blood purification device 1 can be manufactured inexpensively.

[0035] In the blood purification device 1 according to one embodiment of the present invention, a guard 50 is provided on the side wall 20. The guard 50 faces, at a distance, a tip 82 of the sliding portion 81 that protrudes outward from the side wall 20 when the sliding portion 81 is moved furthest in one of the axial directions (X-axis direction). This allows the guard 50 to surround and protect the periphery of the range of motion of the syringe pump 80.

[0036] In the blood purification device 1 according to one embodiment of the present invention, the guard 50 has a grippable handle 51. The handle 51 faces the tip 82 of the slide part 81. This allows the side wall 20 to be carried by gripping the handle 51, which is positioned so as to protect the range of motion of the syringe pump 80. This protects the range of motion of the syringe pump 80 and also makes the side wall 20 easy to carry, facilitating maintenance of the inside of the device.

[0037] In the blood purification device 1 according to one embodiment of the present invention, a recess 12 for accommodating a slide portion 81 is formed in the main body 10. A U-shaped portion 32 is formed on the edge of the side wall 20, recessed along the recess 12. The guard 50 has a connecting portion 52 that contacts the side wall 20 along the U-shaped portion 32. The handle portion 51 extends so as to linearly connect both ends 52e of the U-shaped connecting portion 52 when viewed from a direction perpendicular to the side wall 20 (the X-axis direction). This makes the handle portion 51 easy to grip because it extends linearly, while preventing the handle portion 51 from protruding above the main body 10.

[0038] In the blood purification device 1 according to one embodiment of the present invention, a vertically extending groove 53 is formed on the contact surface 52s of the connecting part 52 with the side wall 20. This forms a drainage groove that penetrates vertically between the outer surface part 30 and the connecting part 52, and liquid droplets that drip from above between the outer surface part 30 and the connecting part 52 can be discharged through the drainage groove.

[0039] In the blood purification device 1 according to one embodiment of the present invention, the side wall 20 includes an outer surface portion 30 and an inner surface portion 40 that is laminated on the outer surface portion 30 and faces the inside of the main body portion 10. The inner surface portion 40 is conductive because it contains a conductive material. The outer surface portion 30 is made of a material with a lower specific gravity than the conductive material. This makes the side wall 20 lighter than when the side wall is made of only a metal plate, making it easier to carry the side wall 20 and facilitating maintenance of the inside of the device.

[0040] In the blood purification device 1 according to one embodiment of the present invention, the main body 10 includes a metal frame 13. A drip-proof seal member 60 is attached to the inner surface 40 along the edge 41 of the inner surface 40, and shielding elastic bodies 70 and 71 are electrically conductive with the metal frame 13. As a result, the drip-proof seal member 60 prevents liquid droplets from penetrating into the main body 10, while the shielding elastic bodies 70 and 71 ensure electrical conductivity between the inner surface 40 and the metal frame 13, forming an electromagnetic shield and suppressing the generation of electromagnetic interference.

[0041] In the blood purification device 1 according to one embodiment of the present invention, the guard 50 is made of an aluminum alloy, which reduces the weight of the guard 50 while ensuring the rigidity of the handle 51, making the side wall 20 easier to carry and facilitating maintenance of the inside of the device.

[0042] In the blood purification device 1 according to one embodiment of the present invention, the outer surface portion 30 is made of insulating resin, which reduces the weight of the side wall 20 and prevents electric shock through the side wall 20.

[0043] In the blood purification device 1 according to one embodiment of the present invention, the inner surface 40 is made of a metal plate, a metal mesh, or a pearlite plate coated with a coating of the above-mentioned conductive material, thereby ensuring the strength of the side wall 20 while forming an electromagnetic shielding surface and suppressing the generation of electromagnetic interference.

[0044] In the blood purification device 1 according to one embodiment of the present invention, the edge 31 of the outer surface portion 30 protrudes toward the inside of the main body portion 10. The inner circumferential surface 31s of the edge 31 of the outer surface portion 30 and the outer circumferential surface 41s of the inner surface portion 40 face each other. This further reduces the risk of electric shock through the side wall 20.

[0045] In the blood purification device 1 according to one embodiment of the present invention, a portion of the shield elastic body 71 is disposed near the handle 51 when viewed from the direction (X-axis direction) perpendicular to the inner surface 40. This makes it possible to suppress the occurrence of electromagnetic interference due to static electricity entering from the periphery of the handle 51 when the device is gripped.

[0046] (Addendum) It will be appreciated by those skilled in the art that the exemplary embodiments described above are examples of the following aspects.

[0047] (Section 1) a main body including a metal frame; a side wall detachably provided on the main body portion, the side wall includes an outer surface portion and an inner surface portion laminated to the outer surface portion and facing the inside of the main body portion; the inner surface portion contains a conductive material and is thereby conductive; the outer surface portion is made of a material having a specific gravity lighter than that of the conductive material, The blood purification device has attached to the inner surface a drip-proof seal member disposed along the edge of the inner surface, and a shield elastic body that is electrically connected to the metal frame.

[0048] (Section 2) 2. The blood purification device according to claim 1, wherein the outer surface portion is made of insulating resin.

[0049] (Section 3) an edge of the outer surface portion protruding toward the inside of the main body portion; 3. The blood purification device according to claim 2, wherein the inner circumferential surface of the edge of the outer surface portion and the outer circumferential surface of the inner surface portion face each other.

[0050] (Section 4) 4. The blood purification device according to any one of claims 1 to 3, wherein the inner surface is made of a metal plate, a metal mesh, or a perlite plate coated with a coating of the conductive material.

[0051] (Section 5) A handle portion is provided on the outer surface portion of the side wall, 5. The blood purification device according to any one of claims 1 to 4, wherein a portion of the shield elastic body is disposed near the handle portion when viewed from a direction perpendicular to the inner surface portion.

[0052] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0053] 1 blood purification device, 10 main body, 11 front, 12 recess, 13 metal frame, 20 side wall, 30 outer surface, 31, 41 edge, 31s inner surface, 32 U-shaped portion, 40 inner surface, 41s outer surface, 50 guard, 51 handle portion, 52 connection portion, 52e both ends, 52s contact surface, 53 groove, 60 drip-proof seal member, 70, 71 shield elastomer, 80 syringe pump, 81 slide portion, 82 tip.

Claims

1. a main body including a metal frame; a side wall detachably provided on the main body portion, the side wall includes an outer surface portion and an inner surface portion laminated to the outer surface portion and facing the inside of the main body portion; the inner surface portion contains a conductive material and is thereby conductive; the outer surface portion is made of a material having a specific gravity lighter than that of the conductive material, The blood purification device has attached to the inner surface a drip-proof seal member disposed along the edge of the inner surface, and a shield elastic body that is electrically connected to the metal frame.

2. The blood purification apparatus according to claim 1 , wherein the outer surface portion is made of an insulating resin.

3. an edge of the outer surface portion protruding toward the inside of the main body portion; The blood purification apparatus according to claim 2 , wherein the inner peripheral surface of the edge of the outer surface portion and the outer peripheral surface of the inner surface portion face each other.

4. 2. The blood purification apparatus according to claim 1, wherein the inner surface is made of a metal plate, a metal mesh, or a perlite plate coated with a coating of the conductive material.

5. A handle portion is provided on the outer surface portion of the side wall, 2. The blood purification apparatus according to claim 1, wherein a portion of the shield elastic body is disposed near the handle portion when viewed from a direction perpendicular to the inner surface portion.

Images