The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2024
Filed:
Sep. 30, 2020
Hoya Corporation, Tokyo, JP;
Tetsu Hirayama, Tokyo, JP;
HOYA CORPORATION, Tokyo, JP;
Abstract
Pliability of a tube is ensured while preventing deformation of the tube, occurrence of air leakage, and the like. An endoscope includes an insertion portion and a tube arranged inside the insertion portion. The insertion portion includes a bending section that is bendable based on an operation, a distal tip connected to a distal tip of the bending section, and a flexible tube portion that is bendable by external force independent of the operation. The tube includes an inner layer and an outer layer formed outside the inner layer. The inner layer is formed from polytetrafluoroethylene having solid structure. The outer layer is positioned at an end portion on a side of the distal tip and includes a first portion formed from polytetrafluoroethylene having solid structure and a second portion formed from polytetrafluoroethylene having porous structure.