Abstract: Provided is an artificial joint that improves fatigue strength and fixes to a bone. An artificial joint includes a stem portion having a distal end for insertion into a bone, a proximal end opposite the distal end, and a roughened surface portion provided in a proximal end-side portion, which has a rougher surface than a distal end-side portion, and which is larger in cross-sectional area than the distal end-side portion. The roughened surface portion includes a distal end-side edge section and a proximal end-side section, the distal end-side edge section including a distal end-side edge portion of the roughened surface portion, the proximal end-side section being configured as a section closer to the proximal end than the distal end-side edge section is to the proximal end. The distal end-side edge section has a surface roughness Ra1 lower than a surface roughness Ra2, Ra3 of the proximal end-side section.

Abstract: Provided is an artificial joint that can improve fatigue strength while achieving the ability to fix to a bone. An artificial joint 1 includes a stem portion 2. The stem portion 2 has a distal end for insertion into a bone and a proximal end opposite the distal end and includes a roughened surface portion 4 which is provided in a proximal end-side portion, which has a rougher surface than a distal end-side portion, and which is larger in cross-sectional area than the distal end-side portion. The roughened surface portion 4 includes a distal end-side edge section 7 and a proximal end-side section 7, the distal end-side edge section 7 including a distal end-side edge portion of the roughened surface portion 4, the proximal end-side section 7 being configured as a section closer to the proximal end than the distal end-side edge section 7 is to the proximal end. The distal end-side edge section 7 has a surface roughness Ra1 lower than a surface roughness Ra2, Ra3 of the proximal end-side section.

Abstract: A biological implant is implantable in a base being a part of a living organism. The implant includes an implant body including at least an outer circumferential surface containing a titanium alloy. The implant body is implantable in the base. Based on a first curve indicating a profile of the surface of the implant body obtained with a measurement length of 25.4 µm and a second curve obtained by removing a long-wavelength component from the first curve at a cutoff value of 5 µm in image processing performed on an image of a cut surface of the implant body perpendicular to the outer circumferential surface of the implant body, an arithmetic mean roughness value as a surface roughness value Ra of the outer circumferential surface calculated using the second curve is greater than or equal to 0.2 µM.

Abstract: Provided is an artificial joint that can improve fatigue strength while achieving the ability to fix to a bone. An artificial joint 1 includes a stem portion 2. The stem portion 2 has a distal end for insertion into a bone and a proximal end opposite the distal end and includes a roughened surface portion 4 which is provided in a proximal end-side portion, which has a rougher surface than a distal end-side portion, and which is larger in cross-sectional area than the distal end-side portion. The roughened surface portion 4 includes a distal end-side edge section 7 and a proximal end-side section 7, the distal end-side edge section 7 including a distal end-side edge portion of the roughened surface portion 4, the proximal end-side section 7 being configured as a section closer to the proximal end than the distal end-side edge section 7 is to the proximal end. The distal end-side edge section 7 has a surface roughness Ra1 lower than a surface roughness Ra2, Ra3 of the proximal end-side section.

Abstract: Provided is an antibacterial biological implant capable of exhibiting superior antibacterial activity stably over a long period of time. The antibacterial biological implant 1 includes a substrate 2 made of a metal material and an anodized coating 3 provided on the substrate 2, the anodized coating 3 including an iodine-rich layer 31 located close to an interface S between the anodized coating 3 and the substrate 2.

Abstract: An ion generating device (1) includes discharge electrodes (21?22) each having a plurality of electrically conductive members (25?26) which form respective tip surfaces (36?37). A longer dimension direction of the tip surfaces (36?37) is nonparallel to an air sending direction (A). This allows for efficient release of ions.

Abstract: The present invention has an object to reduce a risk of performance degradation caused to an ion generating device that is being manufactured. An ion generating device (1) includes: a discharge electrode (21) for generating ions by electric discharge, the discharge electrode having (i) a mounting part (33a) for mounting the discharge electrode on the ion generating device and (ii) a brush part including a plurality of linear electrically conductive members, and the mounting part (33a) binding a base end part of the brush part so as to hold the base end part, the ion generating device further including: an insulating sealing member (41) with which to seal the base end part of the mounting part (33a); and a protective resin (29) with which to cover at least a brush base end surface (25t).

Abstract: Provided is an antibacterial biological implant capable of exhibiting superior antibacterial activity stably over a long period of time. The antibacterial biological implant 1 includes a substrate 2 made of a metal material and an anodized coating 3 provided on the substrate 2, the anodized coating 3 including an iodine-rich layer 31 located close to an interface S between the anodized coating 3 and the substrate 2.

Abstract: An ion generating device (1) includes discharge electrodes (21?22) each having a plurality of electrically conductive members (25?26) which form respective tip surfaces (36?37). A longer dimension direction of the tip surfaces (36?37) is nonparallel to an air sending direction (A). This allows for efficient release of ions.

Abstract: The present invention has an object to reduce a risk of performance degradation caused to an ion generating device that is being manufactured. An ion generating device (1) includes: a discharge electrode (21) for generating ions by electric discharge, the discharge electrode having (i) a mounting part (33a) for mounting the discharge electrode on the ion generating device and (ii) a brush part including a plurality of linear electrically conductive members, and the mounting part (33a) binding a base end part of the brush part so as to hold the base end part, the ion generating device further including: an insulating sealing member (41) with which to seal the base end part of the mounting part (33a); and a protective resin (29) with which to cover at least a brush base end surface (25t).

Abstract: The present invention aims to obtain a surface modification member which is bonded successfully to an implant material in a method for bonding a surface modification member and an implant material by using a slurry containing metal powders. The present invention is a biocompatible metallic porous plate to be bonded to the surface of in vivo implant material, wherein the area ratio A of open holes (a) present on the surface of the side facing the implant material is less than the area ratio B of open holes (b) present on the surface of the side facing a living body; and the open holes (a) communicate through to the living body side. The biocompatible metallic porous plate is preferably produced by layered manufacturing.

Abstract: Provided is an electronic component module which has high reliability and is capable of suppressing reduction in handling performance of a mounting machine. An electronic component module includes a plurality of electronic components mounted on a top surface of a module substrate, a planar top plate covering the electronic components, and a top plate holding member for holding the top plate. The plurality of electronic components include a quartz resonator, and a RF-IC which has a height smaller than that of the quartz resonator and is disposed on the top surface of the module substrate so as to be side by side with the quartz resonator. In addition, the top plate is fixed to the quartz resonator, and the top plate holding member for holding the top plate is disposed between the RF-IC and the top plate.

Abstract: Provided is an electronic component module which has high reliability and is capable of suppressing reduction in handling performance of a mounting machine. An electronic component module includes a plurality of electronic components mounted on a top surface of a module substrate, a planar top plate covering the electronic components, and a top plate holding member for holding the top plate. The plurality of electronic components include a quartz resonator, and a RF-IC which has a height smaller than that of the quartz resonator and is disposed on the top surface of the module substrate so as to be side by side with the quartz resonator. In addition, the top plate is fixed to the quartz resonator, and the top plate holding member for holding the top plate is disposed between the RF-IC and the top plate.