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:
Jun. 05, 2018
Filed:
Jun. 17, 2015
Toray Industries, Inc., Tokyo, JP;
Hiroshi Tsuchikura, Otsu, JP;
Satoshi Yamada, Otsu, JP;
Takayuki Kaneko, Nagoya, JP;
Atsushi Kuwabara, Otsu, JP;
Yuka Sakaguchi, Otsu, JP;
Koji Kadowaki, Otsu, JP;
Motoki Takaoka, Otsu, JP;
Toray Industries, Inc., , JP;
Abstract
A double-weave vascular prosthesis includes an inner layer that contacts a flow of blood, and an outer layer in contact with the inner layer and having an inner layer-covering rate C (%) of 15%≤C≤75% defined by formula (1):=[{(1×1+2×2)×25.4−1×2×1 ×2}/(25.4×25.4)]×100  (1),where D1 is a warp density (ends/25.4 mm) of the outer layer, D2 is a weft density (picks/25.4 mm) of the outer layer, W1 is an apparent width (mm) of a warp yarn of the outer layer, and W2 is an apparent width (mm) of a weft yarn of the outer layer, and the apparent width of each yarn is determined as a mean of measurement values for the widths of randomly selected five threads exposed on a surface of the woven structure.