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:
Sep. 13, 2011
Filed:
Mar. 26, 2010
Tsutomu Sugiki, Nakakoma-gun, JP;
Masaaki Kasai, Nakakoma-gun, JP;
Yukio Imai, Nakakoma-gun, JP;
Shingo Ishii, Nakakoma-gun, JP;
Tsutomu Sugiki, Nakakoma-gun, JP;
Masaaki Kasai, Nakakoma-gun, JP;
Yukio Imai, Nakakoma-gun, JP;
Shingo Ishii, Nakakoma-gun, JP;
Terumo Kabushiki Kaisha, Shibuya-Ku, Tokyo, JP;
Abstract
A valve body formed from an elastic member in the form of an elliptical or circular film (disk shape) has upper and lower surfaces. A first concave portion is formed on the upper surface side of the valve body. The valve body further has an opening and closing section which is opened and closed in response to insertion and pulling out of a dilator and is formed from a first slit, a second slit, a second concave portion and two third concave portions. The second concave portion is formed at a portion of the concave surface side of the valve body corresponding to an intersecting portion, and the third concave portions are formed at the opposite end portions of the first slit. The second concave portion extends, in a thickness wise direction of the valve body, to an intermediate portion of the first slit but not to the second slit.