Patent ID: 11867897
Assignee: EVIDENT CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The insertion assisting instrument according to claim 4, comprising:
an inner cylinder member provided in the outer cylinder member;
a male threaded portion provided on an outer periphery of the inner cylinder member;
a cylinder portion continuously provided on a proximal end side of the cap portion;
a first female threaded portion provided on an inner periphery of the cylinder portion at a position close to a proximal end side, the first female threaded portion being capable of being threadedly engaged with the male threaded portion; and
a second female threaded portion provided on the inner periphery of the cylinder portion at a position close to a distal end side, the second female threaded portion being capable of being threadedly engaged with the male threaded portion, wherein
the cap member is coupled to the assisting instrument body by thread engagement between the second female threaded portion and the male threaded portion.