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. 13, 2011
Filed:
Aug. 12, 2008
Kazuki Honda, Hachioji, JP;
Kazushi Murakami, Hino, JP;
Hiroaki Ichikawa, Hachioji, JP;
Takehiro Nishiie, Akishima, JP;
Yasuhito Kura, Hachioji, JP;
Yoshio Onuki, Hachioji, JP;
Takaaki Komiya, Akiruno, JP;
Kazuki Honda, Hachioji, JP;
Kazushi Murakami, Hino, JP;
Hiroaki Ichikawa, Hachioji, JP;
Takehiro Nishiie, Akishima, JP;
Yasuhito Kura, Hachioji, JP;
Yoshio Onuki, Hachioji, JP;
Takaaki Komiya, Akiruno, JP;
Olympus Medical Systems Corp., Tokyo, JP;
Abstract
According to the present invention, there is provided an endoscope system including: an endoscope having an elongated insertion portion; a medical instrument configured to be inserted in a channel of the insertion portion of the endoscope and to have an elongated flexible sheath; and an advancing and retracting apparatus configured to advance and retract the sheath of the medical instrument in the channel with two rollers, wherein the sheath of the medical instrument is configured to have an outer diameter larger than the distance between the roller surfaces of the two rollers, and to have a frictional resistance increasing unit for increasing frictional resistance between the respective roller surfaces and the outer peripheral surface of the sheath in contact with the respective roller surfaces in a state where the sheath is inserted between the two rollers.