US 12,083,822 B2
Caster unit and medical apparatus including same
Yoenho Kim, Seongnam-si (KR); Namyun Kim, Seongnam-si (KR); Wanki Kim, Seongnam-si (KR); Sungtae Sim, Seongnam-si Gyeonggi-do (KR); Junyoung Jung, Seongnam-si Gyeonggi-do (KR); and Wonchul Choi, Seongnam-si Gyeonggi-do (KR)
Assigned to SAMSUNG MEDISON CO. LTD., Gangwon-do (KR)
Appl. No. 17/267,939
Filed by SAMSUNG MEDISON CO., LTD., Hongcheon-gun Gangwon-do (KR)
PCT Filed Nov. 28, 2018, PCT No. PCT/KR2018/014813
§ 371(c)(1), (2) Date Feb. 11, 2021,
PCT Pub. No. WO2020/036262, PCT Pub. Date Feb. 20, 2020.
Claims priority of application No. 10-2018-0095160 (KR), filed on Aug. 14, 2018.
Prior Publication US 2021/0213777 A1, Jul. 15, 2021
Int. Cl. B60B 33/00 (2006.01); A61B 8/00 (2006.01); B62B 3/00 (2006.01)
CPC B60B 33/0015 (2013.01) [A61B 8/4405 (2013.01); B60B 33/0049 (2013.01); B60B 33/0057 (2013.01); B60B 33/0068 (2013.01); B62B 3/00 (2013.01); A61B 8/54 (2013.01); A61B 8/56 (2013.01); B60B 33/0042 (2013.01); B60B 33/0073 (2013.01); B60B 2200/26 (2013.01); B60B 2900/212 (2013.01); B62B 2202/00 (2013.01); B62B 2301/044 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A medical apparatus comprising a medical device and a plurality of caster units which are arranged below the medical device and movably support the medical device, wherein each of the plurality of caster units includes:
a wheel part that includes a wheel, a wheel support part supporting the wheel to be rotatable with reference to a first rotational axis parallel to a ground, and a caster support part connected to a portion of the wheel support part that is spaced apart from the first rotational axis and extending in a direction perpendicular to the first rotational axis; and
an impact absorption part configured to support the wheel part and absorb an impact applied to the wheel part,
the impact absorption part includes:
a wheel fixing member surrounding the caster support part and fixed to the caster support part;
a body fixing member surrounding the wheel fixing member and fixed to the medical device; and
a buffer member that is disposed between the wheel fixing member and the body fixing member and elastically deformable, and
the buffer member includes:
a first deformation part extending in a direction parallel to an extension direction of the caster support part; and
a second deformation part extending from the first deformation part in a direction different from an extension direction of the first deformation part,
wherein the first deformation part has a first groove disposed in one end thereof,
the second deformation part has a second groove disposed in another end thereof,
a thickness of the first deformation part in the direction different from the extension direction of the first deformation part is smaller than a thickness of the second deformation part in the extension direction of the caster support part, and
the first groove and the second groove are comprised to allow natural elastic deformation of the buffer member.