US 12,449,651 B2
Joint ring, manufacturing method of joint ring, and manufacturing method of bending tube for endoscope
Yoshihiro Hirasawa, Hachioji (JP); Hiroyuki Seki, Hachioji (JP); and Tomonori Imamura, Hino (JP)
Assigned to Olympus Medical Systems Corp., Tokyo (JP)
Filed by OLYMPUS MEDICAL SYSTEMS CORP., Tokyo (JP)
Filed on Jan. 20, 2023, as Appl. No. 18/099,582.
Claims priority of provisional application 63/302,627, filed on Jan. 25, 2022.
Prior Publication US 2023/0235767 A1, Jul. 27, 2023
Int. Cl. A61B 1/00 (2006.01); G02B 23/24 (2006.01)
CPC G02B 23/2476 (2013.01) 16 Claims
OG exemplary drawing
 
1. A joint ring of an endoscope, comprising:
a joint ring body including a joint ring wall having an inner surface, an outer surface, a first end surface, and a second end surface; and
a first wire guide attached to the inner surface of the joint ring wall,
wherein the first wire guide includes a first wire guide body including a first wire guide wall having a third end surface and a fourth end surface,
wherein, in a central axis direction of the joint ring body, at least a first portion of the first end surface and at least a first portion of the third end surface are at a first axial position and at least a first portion of the second end surface and at least a first portion of the fourth end surface are at a second axial position,
wherein the first end surface includes a first recess extending in the central axis direction and having a concave surface, and
wherein the concave surface includes the first portion of the first end surface at the first axial position.