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1. WO2022004242 - SLIDING MEMBER AND METHOD FOR PRODUCING SLIDING MEMBER

Publication Number WO/2022/004242
Publication Date 06.01.2022
International Application No. PCT/JP2021/020799
International Filing Date 01.06.2021
IPC
A61F 2/30 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
30Joints
A61F 2/36 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
30Joints
32for the hip
36Femoral heads
Applicants
  • 京セラ株式会社 KYOCERA CORPORATION [JP]/[JP]
Inventors
  • 村上 隆幸 MURAKAMI, Takayuki
  • 中村 泰斗 NAKAMURA, Taito
  • 池田 潤二 IKEDA, Junji
Agents
  • 特許業務法人HARAKENZO WORLD PATENT & TRADEMARK HARAKENZO WORLD PATENT & TRADEMARK
Priority Data
2020-11493302.07.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) SLIDING MEMBER AND METHOD FOR PRODUCING SLIDING MEMBER
(FR) ÉLÉMENT COULISSANT ET PROCÉDÉ DE FABRICATION D'ÉLÉMENT COULISSANT
(JA) 摺動部材および摺動部材の製造方法
Abstract
(EN) A purpose is to realize a sliding member having improved wear resistance and a method for producing a sliding member. A bone head ball of one aspect of the present disclosure includes a composite ceramic that includes alumina and at least one oxide other than alumina, and the surface roughness Ra of the sliding surface when the bone head ball slides against a constituent member constituting an artificial joint is 0.01 μm or lower. The sliding surface has a plurality of recesses having an opening diameter of 2 μm or less.
(FR) Un objectif de la présente invention est de réaliser un élément coulissant ayant une résistance à l'usure améliorée et un procédé de fabrication d'un élément coulissant. Une bille de tête osseuse selon un aspect de la présente invention comprend une céramique composite qui comprend de l'alumine et au moins un oxyde autre que l'alumine, et la rugosité de surface Ra de la surface coulissante lorsque la bille de tête d'os coulisse contre un élément constitutif constituant une jonction artificielle est de 0,01 µm ou moins. La surface coulissante comporte une pluralité d'évidements ayant un diamètre d'ouverture de 2 µm ou moins.
(JA) 耐摩耗性が向上した摺動部材および摺動部材の製造方法を実現することを目的とする。本開示の一態様の骨頭ボールは、アルミナと、アルミナ以外の少なくとも1つの酸化物と、を含む複合セラミックスを含み、人工関節を構成する構成部材に対して骨頭ボールが摺動するときの摺動面の表面粗さRaが0.01μm以下である。摺動面は、開口径が2μm以下である複数の凹部を有する。
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