US 11,795,527 B2
Pt—Co based alloy for medical use
Shubham Yadav, Isehara (JP); Yuya Kato, Isehara (JP); Kenji Goto, Isehara (JP); and Kunihiro Shima, Isehara (JP)
Assigned to TANAKA KIKINZOKU KOGYO K.K., Tokyo (JP)
Appl. No. 17/295,778
Filed by TANAKA KIKINZOKU KOGYO K.K., Tokyo (JP)
PCT Filed Nov. 18, 2019, PCT No. PCT/JP2019/045003
§ 371(c)(1), (2) Date May 20, 2021,
PCT Pub. No. WO2020/105570, PCT Pub. Date May 28, 2020.
Claims priority of application No. 2018-219040 (JP), filed on Nov. 22, 2018.
Prior Publication US 2022/0017996 A1, Jan. 20, 2022
Int. Cl. C22C 19/07 (2006.01); A61L 31/02 (2006.01)
CPC C22C 19/07 (2013.01) [A61L 31/022 (2013.01)] 17 Claims
 
1. An alloy for medical use, consisting of Pt, Co, Cr, Ni, and Mo, and unavoidable impurities, wherein
an atomic content of Pt in the alloy is 10 atom % or more and 30 atom % or less,
an atomic content of Cr in the alloy is 20 atom % or more and 31 atom % or less,
an atonic content of Ni in the alloy is 5 atom % or more and 24 atom % or less,
an atomic content of Mo is 4 atom % or more and 8 atom % or less, and
Co constitutes the balance of the alloy; and
wherein CNi/CPt, which is a ratio of the atomic content of Ni in the alloy (CNi) to the atomic content of Pt in the alloy (CPt), is 1.5 or less.