MOCHIDA PHARMACEUTICAL CO., LTD.

A non-tubular material for nerve regeneration induction, which can be used for the regeneration of a damaged part in a nerve, and which comprises: (A) a crosslinked form produced by crosslinking a low-endotoxin bioabsorbable polysaccharide having a carboxyl group in the molecule with at least one crosslinkable reagent selected from a compound represented by general formula (I) and a salt thereof via covalent bonds; and (B) a bioabsorbable polymer. R 1 HN—(CH 2 ) n —NHR 2 (I), wherein R 1 and R 2 independently represent a hydrogen atom or a group represented by formula: —COCH(NH 2 )—(CH 2 ) 4 —NH 2 , and n represents an integer of 2 to 18. Thus, a medical material that can induce the regeneration of a damaged part in a nerve is provided.

Realized is reliable fixation of a material in a fluid state containing a monovalent metal salt of alginic acid when the material is applied to a subject. A combination of compositions comprising a first material composition containing a monovalent metal salt of alginic acid and a second material composition containing a cross-linking agent having an action of cross-linking the monovalent metal salt of alginic acid, wherein the combination is to be used in such a way as to apply the first material composition to a subject in a fluid state and contact the second material composition with the first material composition applied to the subject to gel at least a part of the first material composition, wherein the first material composition further contains a coloring component so that a formation state of a gel coat on a surface of the first material composition applied to the subject can be evaluated.

A sheet applying device, a sheet applying system, and a sheet applying method are provided. A first sheet applying system 10 mainly includes a first sheet applying device 11 and a sheet cartridge 900 . The first sheet applying device 11 mainly includes a first supporter 200 and a holder 500 . The first supporter 200 mainly includes a first support shaft 210 a , a second support shaft 210 b , a first swing mechanism 220 , a support cover 211 , and a handle 300 . The first support shaft 210 a and the second support shaft 210 b have straight cylindrical bar shapes and movably extend in parallel to each other from a proximal end side of the first sheet applying system 10 toward a distal end side of the first sheet applying system 10 , in other words, in a longitudinal direction of the first supporter 200.

Provided is a non-tubular brain damage recovery material which is used to cover and/or fill a damaged part of the brain, the brain damage recovery material including: (A) a cross-linked body with which a bioabsorbable polysaccharide having a carboxyl group in a low endotoxin molecule is covalently bonded and cross-linked with at least one crosslinking reagent selected from among a compound represented by general formula (I) and salts thereof; and (B) a bioabsorbable polymer. R 1 HN—(CH 2 ) n —NHR 2 (I) [in the formula, R 1 and R 2 each independently represent a hydrogen atom or a group represented by formula of —COCH(NH 2 )—CH 2 ] 4 —NH 2 , and n represents an integer from 2 to 18]. Accordingly, provided is a medical material which can recover a damaged part of the brain.

The purpose of this invention is to provide an anti-adhesion material having a high anti-adhesion effect, pertaining to an anti-adhesion material comprising a biocompatible sponge-like layered body having a sponge-like first layer and a sponge-like second layer both being at least partially crosslinked with a curing agent and comprising a low endotoxin monovalent metal salt of alginic acid. The monovalent metal salt of alginic acid in the first layer has a weight average molecular weight of 30000 to 300000. The monovalent metal salt of alginic acid in the second layer has a weight average molecular weight of 1000 to 200000. The weight average molecular weights are determined by GPC-MALS after a de-crosslinking treatment. The weight average molecular weight of the monovalent metal salt of alginic acid in the first layer is higher than the weight average molecular weight of the monovalent metal salt of alginic acid in the second layer.

An adhesion-preventing material having a high adhesion-preventing effect has been demanded. An adhesion-preventing material including a sterilized biocompatible sponge-like laminate, wherein the sponge-like laminate comprises a sponge-like first layer and a sponge-like second layer each of which is at least partially crosslinked with a curing agent and comprises a low-endotoxin alginic acid monovalent metal salt, the alginic acid monovalent metal salt in the first layer has a weight average molecular weight of 10,000 to 2,000,000, the alginic acid monovalent metal salt in the second layer has a weight average molecular weight of 1,000 to 1,000,000, the weight average molecular weights are measured by a GPC-MALS method after a decrosslinking treatment, and the weight average molecular weight of the alginic acid monovalent metal salt in the first layer is higher than that in the second layer.

An adhesion-preventing material having a high adhesion-preventing effect has been demanded. An adhesion-preventing material including a sterilized biocompatible sponge-like laminate, wherein the sponge-like laminate comprises a sponge-like first layer and a sponge-like second layer each of which is at least partially crosslinked with a curing agent and comprises a low-endotoxin alginic acid monovalent metal salt, the alginic acid monovalent metal salt in the first layer has a weight average molecular weight of 10,000 to 2,000,000, the alginic acid monovalent metal salt in the second layer has a weight average molecular weight of 1,000 to 1,000,000, the weight average molecular weights are measured by a GPC-MALS method after a decrosslinking treatment, and the weight average molecular weight of the alginic acid monovalent metal salt in the first layer is higher than that in the second layer.

Realized is reliable fixation of a material in a fluid state containing a monovalent metal salt of alginic acid when the material is applied to a subject. A combination of compositions comprising a first material composition containing a monovalent metal salt of alginic acid and a second material composition containing a cross-linking agent having an action of cross-linking the monovalent metal salt of alginic acid, wherein the combination is to be used in such a way as to apply the first material composition to a subject in a fluid state and contact the second material composition with the first material composition applied to the subject to gel at least a part of the first material composition, wherein the first material composition further contains a coloring component so that a formation state of a gel coat on a surface of the first material composition applied to the subject can be evaluated.

[Problem] An adhesion-preventing material having a high adhesion-preventing effect has been demanded. [Solution] An adhesion-preventing material including a sterilized biocompatible sponge-like laminate, wherein the sponge-like laminate comprises a sponge-like first layer and a sponge-like second layer each of which is at least partially crosslinked with a curing agent and comprises a low-endotoxin alginic acid monovalent metal salt, the alginic acid monovalent metal salt in the first layer has a weight average molecular weight of 10,000 to 2,000,000, the alginic acid monovalent metal salt in the second layer has a weight average molecular weight of 1,000 to 1,000,000, the weight average molecular weights are measured by a GPC-MALS method after a decrosslinking treatment, and the weight average molecular weight of the alginic acid monovalent metal salt in the first layer is higher than that in the second layer.

A non-tubular material for nerve regeneration induction, which can be used for the regeneration of a damaged part in a nerve, and which comprises: (A) a crosslinked form produced by crosslinking a low-endotoxin bioabsorbable polysaccharide having a carboxyl group in the molecule with at least one crosslinkable reagent selected from a compound represented by general formula (I) and a salt thereof via covalent bonds; and (B) a bioabsorbable polymer. R 1 HN—(CH 2 ) n —NHR 2 (I) [wherein R 1 and R 2 independently represent a hydrogen atom or a group represented by formula: —COCH(NH 2 )—(CH 2 ) 4 —NH 2 , and n represents an integer of 2 to 18]. Thus, a medical material that can induce the regeneration of a damaged part in a nerve is provided.