US 12,402,785 B2
Endoscope camera head
Fuminori Tanahashi, Tokyo (JP); and Kohtaro Amano, Tokyo (JP)
Assigned to Sony Olympus Medical Solutions Inc., Tokyo (JP)
Filed by Sony Olympus Medical Solutions Inc., Tokyo (JP)
Filed on Jun. 21, 2023, as Appl. No. 18/338,386.
Application 18/338,386 is a division of application No. 16/633,587, granted, now 11,717,143, previously published as PCT/JP2018/018989, filed on May 16, 2018.
Claims priority of application No. 2017-148486 (JP), filed on Jul. 31, 2017.
Prior Publication US 2023/0329536 A1, Oct. 19, 2023
Int. Cl. A61B 1/04 (2006.01); A61B 1/00 (2006.01)
CPC A61B 1/042 (2013.01) [A61B 1/00066 (2013.01); A61B 1/00105 (2013.01); A61B 1/00126 (2013.01); A61B 1/00128 (2013.01); A61B 1/00148 (2022.02); A61B 1/00195 (2013.01); A61B 1/04 (2013.01); A61B 1/044 (2022.02)] 10 Claims
OG exemplary drawing
 
1. An endoscope camera head comprising
a first member and a second member that are capable of rotating relative to each other about a first axis, wherein
the first member has a concave portion that extends in an annular shape about the first axis as a center is provided, and a first rotation-sliding surface that extends in an annular shape about the first axis as a center, wherein the first rotation-sliding surface includes an inner surface of the concave portion,
the second member is configured to engage with the first rotation-sliding surface and has a convex portion that extends in an annular shape about the first axis as a center and engages with the concave portion, and a second-rotation sliding surface configured to rotation-slide relatively to the first rotation-sliding surface, wherein the second rotation-sliding surface includes an outer surface of the convex portion, and
at a distal end of the convex portion, a groove that extends in a spiral shape, so that the second rotation-sliding surface abuts only on a part of the first rotation-sliding surface, to expose a part of the first rotation-sliding surface outside.