BIOLOGICAL IMPLANT AND MANUFACTURING METHOD OF BIOLOGICAL IMPLANT

• Main Authors: KUROSHIMA SHINICHIRO, KAMO MICHIMASA, YAMASHITA MITSUYOSHI, SAWASE TAKASHI, IWAMI TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 05.07.2024
• Subjects: APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE; BANDAGES, DRESSINGS OR ABSORBENT PADS; DENTISTRY; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

To provide a titanium alloy biological implant that can be firmly fixed to a part to be planted such as a bone of a living body.SOLUTION: A biological implant is implanted in a part to be planted, part of a living body. The implant includes an implant body whose outer peripheral surface, at least, is made of a titanium alloy. The implant body is embedded in the part to be implanted. An image obtained by imaging a cut surface perpendicular to the outer peripheral surface of the implant body is subjected to image processing to acquire a first curve representing an outline of a surface of the implant body at a measurement length of 25.4 μm, and a second curve by removing a long wavelength component with a cutoff value of 5 μm from the first curve. When an arithmetic average roughness is calculated using the second curve, a surface roughness Ra, the arithmetic average roughness, is 0.2 μm or more.SELECTED DRAWING: Figure 3 【課題】生体の骨などの被埋入部に強固に固定できるチタン合金製の生体インプラントを提供する。【解決手段】生体インプラントは、生体の一部である被埋入部に埋入される。インプラントは、少なくとも外周表面がチタン合金製であるインプラント体を含む。インプラント体は被埋入部に埋入される。インプラント体の外周表面に対して垂直な切断面を撮像して得られた画像に対して画像処理を行って、２５．４μｍの測定長でのインプラント体の表面の輪郭を示す第１曲線を取得し、第１曲線に対して５μｍのカットオフ値で長波長成分を除去して第２曲線を取得し、第２曲線を用いて算術平均粗さを算出した場合に、当該算術平均粗さである表面粗さＲａが０．２μｍ以上である。【選択図】図３