US 12,082,824 B2
Surgical instrument
Shigeki Asada, Kawachinagano (JP); Kazutaka Sugimoto, Hikone (JP); and Masahiko Hashida, Toyonaka (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/312,774
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Dec. 10, 2019, PCT No. PCT/JP2019/048203
§ 371(c)(1), (2) Date Jun. 10, 2021,
PCT Pub. No. WO2020/122046, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 2018-231337 (JP), filed on Dec. 11, 2018.
Prior Publication US 2022/0047275 A1, Feb. 17, 2022
Int. Cl. A61B 17/15 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/157 (2013.01) [A61B 90/06 (2016.02); A61B 2090/061 (2016.02)] 12 Claims
OG exemplary drawing
 
1. A surgical instrument, comprising:
an osteotomy guide portion configured to guide a cutting direction of a bone;
a supporting portion configured to support the osteotomy guide portion;
a base housing to which the supporting portion is attached, the base housing comprising a housing main body portion and a pair of spring holding portions;
a pair of ankle arms that are slidably mounted on the base housing and arranged so that an ankle is configured to be sandwiched between the pair of ankle arms from both sides of the ankle;
an interlocking mechanism configured to interlock and slide the pair of ankle arms with respect to the base housing;
a center position marker portion configured to indicate a center position between the pair of ankle arms in a slidably moving direction of the pair of ankle arms; and
a pair of spring portions configured to bias the pair of ankle arms in a direction in which the pair of ankle arms approaches each other with respect to the base housing, and
wherein one of the pair of spring portions is arranged inside the housing main body portion between one of the pair of spring holding portions and one of the pair of ankle arms, and the other of the pair of spring portions is arranged inside the housing main body portion between the other of the pair of spring holding portions and the other of the pair of ankle arms.