Teijin Limited

Yukako Fukuhira

Hiroaki Kaneko

Yoshihiko Sumi

Masaru Tanaka

Masatsugu Shimomura

Masaya Ito

Eiichi Kitazono

Takanori Miyoshi

Nobuyuki Endo

The invention provides a cellulose derivative having a repeating unit of the formula below, a composition including the cellulose derivative and a phospholipid, a method for production thereof, and an adhesion barrier including the cellulose derivative or the composition. In the formula, R, R, and Rare &#x2014;H, &#x2014;CH&#x2014;COOH, &#x2014;CH&#x2014;COOX, or &#x2014;CHCO-phosphatidylethanolamine, and X is an alkali metal or an alkali earth metal. The degree of substitution of &#x2014;CH&#x2014;COOH and &#x2014;CH&#x2014;COOX is 0.3 to 2.0 in total, and the degree of substitution of &#x2014;CHCO-phosphatidylethanolamine is 0.001 to 0.05.

Cellulose derivative and method for production thereof

A cylindrical body is produced which is composed of a fiber structure with a basis weight of 1-50 g/mand having a diameter of 0.5-50 mm and a bellows-shaped section, wherein the crest-to-crest spacing of the bellows-shaped section is no greater than 2 mm and the crest-to-valley depth of the bellows-shaped section is 0.01-1 mm; collagen is added to the cylindrical body to produce a composite including the cylindrical body and collagen.

Composite of support matrix and collagen, and method for production of support matrix and composite

The invention relates to a honeycomb film made of a biodegradable polymer which has biodegradation properties as an anti-adhesion membrane for preventing adhesion after an operation, is excellent in handling properties, and exhibits a satisfactory adhesion preventive effect stably over a desired period of time, and to a production process of the same. Above all, the invention provides an anti-adhesion membrane of a honeycomb film made of polylactic acid as a biodegradable polymer and a phospholipid and a production process of the same.

Biodegradable film having honeycomb structure

A tissue regeneration substrate comprising a film with a honeycomb structure composed primarily of a polymer compound and a phospholipid. A tissue regeneration complex comprising the tissue regeneration substrate and cells held in the tissue regeneration substrate. The substrate is particularly suitable for regeneration of cartilage tissue, and allows growth of cartilage tissue in a three-dimensional fashion.

Growing community of inventors

Tokyo, Japan

Yukako Fukuhira