Blood purification device

Abstract

To easily execute maintenance of the inside of a device while narrowing the width of a body part.SOLUTION: A blood purifier includes a syringe pump 80, a body part 10, and a side wall 20. The syringe pump 80 includes a slide part 81 for moving a plunger of a syringe in an axial direction (X-axis direction). The syringe pump 80 is attached to the body part 10 so that the axial direction is horizontal. The side wall 20 is detachably provided to the body part 10. The slide part 81 projects outside the side walls 20 when moving to one side of the axial direction (X-axis direction).SELECTED DRAWING: Figure 5

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 used in intensive care units and other facilities are required to have a narrow main body to minimize footprint and to facilitate easy maintenance of the device's interior. In conventional blood purification devices with a syringe pump attached to the main body, the horizontal range of motion of the syringe pump is positioned within the width of the main body when viewed from the front, resulting in a wide main body. The blood purification device described in Patent Document 1 has a console panel integrally formed with the front and side walls, making it impossible to remove the side walls for easy maintenance of the device's interior.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a blood purification device that allows for easy maintenance of the inside of the device while reducing the width of the main body. [Means for solving the problem]

[0006] The blood purification device according to the present invention comprises a syringe pump, a main body, and a sidewall. The syringe pump has a slide that moves the plunger of the syringe in the axial direction. The syringe pump is attached to the main body so that the axial direction is horizontal. The sidewall is detachably attached to the main body. The slide protrudes outward from the sidewall when moved in one of the axial directions.

[0007] In one embodiment of the present invention, a guard is provided on the side wall, and the guard faces, with a gap therebetween, a tip end of the sliding portion that protrudes outward from the side wall when the sliding portion is in a state of being moved furthest in the one axial direction.

[0008] In one embodiment of the present invention, the guard has a grippable handle portion that faces the tip of the slide portion.

[0009] In one embodiment of the present invention, the main body has a recess for accommodating the slide portion. A U-shaped recess is formed on the edge of the side wall, and the guard has a connecting portion that contacts the side wall along the U-shaped portion. The handle extends so as to linearly connect both ends of the U-shaped connecting portion when viewed from a direction perpendicular to the side wall.

[0010] In one embodiment of the present invention, a groove extending in the vertical direction is formed on a contact surface of the connecting portion that contacts the side wall. [Effects of the Invention]

[0011] According to the present invention, the width of the main body of the blood purification device can be narrowed while facilitating 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 a 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] 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]

[0047] 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 syringe pump having a slide portion that moves a plunger of the syringe in an axial direction; a main body to which the syringe pump is attached so that the axial direction is horizontal; a side wall detachably provided on the main body portion, The blood purification device, wherein the sliding portion protrudes outward from the side wall when moved in one axial direction.

2. A guard is provided on the side wall, The blood purification apparatus according to claim 1 , wherein the guard faces, with a gap therebetween, a tip of the sliding portion that protrudes outward from the side wall when the sliding portion is moved furthest in the one axial direction.

3. The guard has a grippable handle, The blood purification apparatus according to claim 2 , wherein the handle portion faces the leading end of the slide portion.

4. a recess for accommodating the slide portion is formed in the main body portion, a U-shaped portion is formed on the edge of the side wall, the U-shaped portion being recessed along the recess, the guard has a connection portion that contacts the side wall along the U-shaped portion; The blood purification apparatus according to claim 3 , wherein the handle extends so as to linearly connect both ends of the U-shaped connecting portion when viewed in a direction perpendicular to the side wall.

5. The blood purification apparatus according to claim 4 , wherein a groove extending in the vertical direction is formed on a contact surface of the connecting portion with the side wall.

Images