Abstract: A soft film, a sponge, or a sheet in the dried state is provided, which is capable of forming a hydrogel absorbing water or blood. The film is obtainable by preparing a film-state material in the dried state from either a solution of poly(acrylic acid) or a solution of polyvinylpyrrolidone, and bringing the film-state material into contact with the other remaining solution, and then drying or freeze-drying it.

Abstract: A soft film, a sponge, or a sheet in the dried state is provided, which is capable of forming a hydrogel absorbing water or blood. The film is obtainable by preparing a film-state material in the dried state from either a solution of poly(acrylic acid) or a solution of polyvinylpyrrolidone, and bringing the film-state material into contact with the other remaining solution, and then drying or freeze-drying it.

Abstract: A soft film, a sponge, or a sheet in the dried state is provided, which is capable of forming a hydrogel absorbing water or blood. The film is obtainable by preparing a film-state material in the dried state from either a solution of poly(acrylic acid) or a solution of polyvinylpyrrolidone, and bringing the film-state material into contact with the other remaining solution, and then drying or freeze-drying it.

Abstract: A blade driving device includes an opening forming member forming an opening portion, a pivotal member pivoting about the opening portion, blades configured to enter or exit from the opening portion upon receiving power transmitted from the pivotal member, a cover member arranged so that the pivotal member and the plurality of blades are located between the cover and the opening forming member, and engaging portions engaging the of blades with the opening forming member. The pivotal member comes into slidable contact with the engaging portions in a process of pivoting. A pivotal position of the pivotal member with respect to the opening forming member is defined by the engaging portions.

Abstract: A blade driving device includes an opening forming member forming an opening portion, a pivotal member pivoting about the opening portion, blades configured to enter or exit from the opening portion upon receiving power transmitted from the pivotal member, a cover member arranged so that the pivotal member and the plurality of blades are located between the cover and the opening forming member, and engaging portions engaging the of blades with the opening forming member. The pivotal member comes into slidable contact with the engaging portions in a process of pivoting. A pivotal position of the pivotal member with respect to the opening forming member is defined by the engaging portions.

Abstract: A blade driving device includes an opening forming member forming an opening portion, a pivotal member pivoting about the opening portion, blades configured to enter or exit from the opening portion upon receiving power transmitted from the pivotal member, a cover member arranged so that the pivotal member and the plurality of blades are located between the cover and the opening forming member, and engaging portions engaging the of blades with the opening forming member. The pivotal member comes into slidable contact with the engaging portions in a process of pivoting. A pivotal position of the pivotal member with respect to the opening forming member is defined by the engaging portions.

Abstract: A blade driving device includes an opening forming member forming an opening portion, a pivotal member pivoting about the opening portion, blades configured to enter or exit from the opening portion upon receiving power transmitted from the pivotal member, a cover member arranged so that the pivotal member and the plurality of blades are located between the cover and the opening forming member, and engaging portions engaging the of blades with the opening forming member. The pivotal member comes into slidable contact with the engaging portions in a process of pivoting. A pivotal position of the pivotal member with respect to the opening forming member is defined by the engaging portions.

Abstract: A soft film, a sponge, or a sheet in the dried state is provided, which is capable of forming a hydrogel absorbing water or blood. The film is obtainable by preparing a film-state material in the dried state from either a solution of poly(acrylic acid) or a solution of polyvinylpyrrolidone, and bringing the film-state material into contact with the other remaining solution, and then drying or freeze-drying it.

Abstract: A soft film, a sponge, or a sheet in the dried state is provided, which is capable of forming a hydrogel absorbing water or blood. The film is obtainable by preparing a film-state material in the dried state from either a solution of poly(acrylic acid) or a solution of polyvinylpyrrolidone, and bringing the film-state material into contact with the other remaining solution, and then drying or freeze-drying it.

Abstract: A freeze-dried product of a complex containing (i) a nucleic acid, an oligonucleic acid or a derivative thereof, (ii) polyethyleneimine and (iii) hyaluronic acid or chondroitin sulfate. The freeze-dried product can be used to introduce a nucleic acid or an oligonucleotide into a cell.

Abstract: A freeze-dried product of a complex containing (i) a nucleic acid, an oligonucleic acid or a derivative thereof, (ii) polyethyleneimine and (iii) hyaluronic acid or chondroitin sulfate. The freeze-dried product can be used to introduce a nucleic acid or an oligonucleotide into a cell.

Abstract: The present invention provides a polyethylene glycol derivative having sugar residue-containing side chains and carboxyl group-containing side chains, and a method of preparing the same. The present invention also provides a carrier for drug delivery systems and a carrier for gene transfer, both comprising the polyethylene glycol derivative.

Abstract: A freeze-dried product is provided which, together with demonstrating satisfactory ability to express function when used to introduce a gene or antisense nucleic acid and the like, enables concentration to be adjusted easily, offers easy handling and has superior storage performance.

Abstract: The present invention provides a polyethylene glycol derivative having sugar residue-containing side chains and carboxyl group-containing side chains, and a method of preparing the same. The present invention also provides a carrier for drug delivery systems and a carrier for gene transfer, both comprising the polyethylene glycol derivative.

Abstract: The present invention provides a polyethylene glycol derivative having sugar residue-containing side chains and carboxyl group-containing side chains, and a method of preparing the same. The present invention also provides a carrier for drug delivery systems and a carrier for gene transfer, both comprising the polyethylene glycol derivative.

Abstract: The present invention provides a polymer complex of a sugar response type having boronic acid groups in the polymer. Medicines may be contained or linked, preferably, the medicines have hydroxy groups. The polymer having boronic acid groups and the medicine having hydroxy groups may be linked by boronic acid ester bonds. The complex may also comprises polymers having boronic acid groups and polymers having hydroxy groups, and these polymers may be cross-linked.

Abstract: A novel actinonin derivative and a salt thereof are provided, which are useful as enzyme inhibitors and particularly have strong inhibitory activities against enkephalinase and angiotensin-converting enzymes. This actinonin derivative is represented by general formula (I): ##STR1## wherein R.sup.1 is sulfoxymethyl or carboxyl or a substituted carboxyl group selected from carboxamide, hydroxyaminocarbonyl and alkoxycarbonyl groups; and R.sup.2 is hydroxyl, alkoxy, hydroxyamino or sulfoxyamino group.

Abstract: The present invention provides a polymer-combined drug having directional characteristics to digestive organs, wherein it comprises a medicine combined with a polymer which has an alkyleneoxy group as a repeating unit. The polymer-combined drug is produced by reacting a polyoxyalkylene glycol having one or more terminal functional groups and a medicine, if necessary in a solvent, and if necessary in the presence of a catalyst. It is able to administer the drug orally or by intravenous injection so as to maintain the concentration in blood stably for a long time, and to absorb or take in digestive organs such as the stomach and intestines directly.