US 12,029,450 B2
Biodegradable medical implement
Masakazu Ishihara, Ayabe (JP); Yoshimitsu Ueno, Ayabe (JP); Tomoaki Murata, Ayabe (JP); Yukito Otsuki, Ayabe (JP); Yusuke Kobayashi, Ayabe (JP); Yoshinobu Oka, Kyoto (JP); Wook-Cheol Kim, Kyoto (JP); Tetsuo Aida, Toyama (JP); and Sadami Tsutsumi, Kyoto (JP)
Assigned to NITTO SEIKO CO., LTD., Kyoto (JP); KYOTO PREFECTURAL PUBLIC UNIVERSITY CORPORATION, Kyoto (JP); Wook-Cheol Kim, Kyoto (JP); NATIONAL UNIVERISTY CORPORATION UNIVERSITY OF TOYAMA, Toyama (JP); and Sadami Tsutsumi, Kyoto (JP)
Appl. No. 18/266,639
Filed by NITTO SEIKO CO., LTD., Ayabe (JP); KYOTO PREFECTURAL PUBLIC UNIVERSITY CORPORATION, Kyoto-shi (JP); Wook-Cheol Kim, Kyoto (JP); and NATIONAL UNIVERSITY CORPORATION UNIVERSITY OF TOYAMA, Toyama (JP)
PCT Filed Nov. 29, 2021, PCT No. PCT/JP2021/043582
§ 371(c)(1), (2) Date Jun. 12, 2023,
PCT Pub. No. WO2022/130948, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 2020-207080 (JP), filed on Dec. 14, 2020.
Prior Publication US 2024/0041497 A1, Feb. 8, 2024
Int. Cl. A61B 17/58 (2006.01); A61L 31/02 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/58 (2013.01) [A61L 31/022 (2013.01); A61B 2017/00004 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A biodegradable medical implement, wherein:
the biodegradable medical implement is cylindrical and formed of a magnesium material;
the biodegradable medical implement comprises a side surface;
at least in one predetermined cross section perpendicular to a longitudinal direction, a layer of magnesium crystal grains in which a (0001) plane in a hexagonal crystal structure is oriented toward the surface side is continuous over an entire circumference; and
the medical implement comprises a solid cylinder.