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:
Apr. 12, 2005
Filed:
Jan. 11, 2002
Teruo Ouchi, Saitama-ken, JP;
Teruo Ouchi, Saitama-ken, JP;
PENTAX Corporation, Tokyo, JP;
Abstract
An insertion unit for an endoscope includes a flexible tube having an inner diameter Dand an inner cross-sectional area S, and a plurality of components inserted and arranged in said flexible tube. The plurality of components include at least one optical fiber bundle. The insertion unit is configured such that the inner diameter Dis not less than 6.5 mm and the inner cross-sectional area S satisfies the condition of 0.5≦Σs/s≦0.6, where Σs represents a sum of cross-sectional areas of the components arranged in the flexible tube. Alternatively, the insertion unit is configured such that the inner diameter Dis less than 6.5 mm and the inner cross-sectional area S satisfies the condition of 0.5≦Σs/s≦0.65.