Loading patent…
AssigneeDenki Kagaku Kogyo Kabushiki Kaisha
InventorsYoshiaki Miyata, Yasukazu Himeda, Masamichi Hashimoto, Toshihiko Umeda, Teruzou Miyoshi
Estimating the term…
A separate type medical material containing a hyaluronic acid ester derivative, which satisfies the storage stability of a hyaluronic acid ester derivative and avoidance of irritation and pain at the time of injecting a therapeutic agent for joints, is provided. A separate type medical material comprising liquid (A) which is an aqueous solution containing a hyaluronic acid ester derivative and buffered to a pH of from 4.5 to 6.5, and liquid (B) which is an aqueous solution having such a buffering power that when it is mixed with the liquid (A), the mixed liquid has a pH within a range of from 6.8 to 7.8, kept separately from each other.
A separate type medical material, characterized in that it comprises liquid (A) which is an aqueous solution containing a hyaluronic acid ester derivative and buffered to a pH of from 4.5 to 6.5, and liquid (B) which is an aqueous solution having such a buffering power that when it is mixed with the liquid (A), the mixed liquid has a pH within a range of from 6.8 to 7.8, and the liquid (A) and the liquid (B) are kept separately from each other before administration and administered as mixed.
Dependencies are inferred from the claim text.