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1. (WO1997018244) PHOTOCURED CROSS-LINKED-HYALURONIC ACID GEL AND METHOD OF PREPARATION THEREOF
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018244 International Application No.: PCT/JP1996/003349
Publication Date: 22.05.1997 International Filing Date: 14.11.1996
Chapter 2 Demand Filed: 13.01.1997
IPC:
A61L 15/28 (2006.01) ,A61L 27/20 (2006.01) ,A61L 31/04 (2006.01) ,C08B 37/08 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
L
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
15
Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16
Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
22
containing macromolecular materials
28
Polysaccharides or their derivatives
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
L
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27
Materials for prostheses or for coating prostheses
14
Macromolecular materials
20
Polysaccharides
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
L
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
31
Materials for other surgical articles
04
Macromolecular materials
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
B
POLYSACCHARIDES; DERIVATIVES THEREOF
37
Preparation of polysaccharides not provided for in groups C08B1/-C08B35/110; Derivatives thereof
08
Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
Applicants:
SEIKAGAKU CORPORATION [JP/JP]; 1-5, Nihonbashi-Honcho 2-chome Chuo-ku Tokyo 103, JP (AllExceptUS)
WAKI, Michinori [JP/JP]; JP (UsOnly)
MIYAMOTO, Kenji [JP/JP]; JP (UsOnly)
Inventors:
WAKI, Michinori; JP
MIYAMOTO, Kenji; JP
Agent:
HAGINO, Taira ; Eikoh Patent Office ARK Mori Building, 28th floor 12-32, Akasaka 1-chome Minato-ku Tokyo 107, JP
Priority Data:
7/31982515.11.1995JP
Title (EN) PHOTOCURED CROSS-LINKED-HYALURONIC ACID GEL AND METHOD OF PREPARATION THEREOF
(FR) GEL D'ACIDE HYALURONIQUE RETICULE PHOTOPOLYMERISABLE ET PROCEDE DE PREPARATION
Abstract:
(EN) A photocured cross-linked-hyaluronic acid gel, which has a storage modulus (G') of from 50 to 1500 Pa, a loss modulus (G'') of from 10 to 300 Pa, and a tangent delta (G''/G') of from 0.1 to 0.8 in dynamic viscoelasticity at a frequency of 10 Hz, and which is a hydrogel obtained by irradiation with ultraviolet rays of a photoreactive hyaluronic acid derivative in which a photoreactive cross-linking group is chemically linked to a functional group of the hyaluronic acid and cross-linking of mutual photoreactive cross-linking groups, methods for preparing the same, and uses thereof as biomedical materials.
(FR) La présente invention concerne un gel d'acide hyaluronique réticulé photopolymérisable, qui a un module de conservation (G') allant de 50 à 1500 Pa, un module de perte (G'') de 10 à 300 Pa et une tangente delta (G''/G') de 0 à 0,8 en viscoélasticité dynamique à une fréquence de 10 Hz, et qui est un hydrogel obtenu, par irradiation aux rayons ultraviolets, à partir d'un dérivé d'acide hyaluronique photoréactif lié chimiquement à un groupe fonctionnel de l'acide hyaluronique. L'invention concerne également la réticulation de groupes de réticulation mutuellement photoréactifs. L'invention concerne aussi des procédés de préparation de ces produits et des utilisations comme substances biomédicales.
Designated States: AU, CA, CN, HU, JP, KR, NO, RU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19982212EP0861270RU02197501US6031017JP3439481 JPH11512778
CN1207744CA2237192KR1019990067621AU1996075872