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:
Jan. 07, 1997
Filed:
Nov. 21, 1995
Mitunori Machida, Omiya, JP;
Mituo Kondo, Omiya, JP;
Fuji Photo Optical Co., Ltd., Omiya, JP;
Abstract
A joint construction for connecting a flexibly bendable angle section of an endoscopic insertion rod with an anteriorly and/or posteriorly located section of the insertion rod, including a line-wrapping layer formed on a fore end portion of a resilient outer skin layer of the angle section at a joint with the adjoining section, and a rigid cover ring fitted on the line-wrapping layer for protective purposes. The rigid cover ring is externally tapered or gradually thinned down in its front and rear end portions to provide front and rear bevel surfaces. The rear bevel surface of the rigid cover ring is embedded under an annular fin which is formed in and out of a resilient skin layer at a position bordering on outer edges of the rear bevel surface, precluding possibilities of rear edges of the rigid cover ring hitting against a sharp-edged fore end of a tubular sheath member of a trocar particularly at the time of extraction of the endoscopic insertion rod from the trocar, and ensuring smooth retraction and protrusion of the endoscopic insertion rod into and out of a trocar.