摘要:
A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
摘要:
A co-polyester which includes the reaction product of a polycondensation polyester and epsilon-caprolactone, wherein the polycondensation polyester comprises the reaction product of diglycolic acid and/or a derivative thereof and a diol. The co-polyester is injectable and absorbable into animal, such as human, tissue and can be used for facial cosmetic or reconstructive surgery of soft tissue. Another embodiment is directed to a method for preventing adhesion using a co-polyester comprising the reaction product of a polycondensation polyester and epsilon-caprolactone, wherein the polycondensation polyester comprises the reaction product of diglycolic acid and/or a derivative thereof and a diol, and the co-polyester comprises about 40 to 50% by weight of the polycondensation polyester based on the total weight of the co-polyester.
摘要:
A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
摘要:
The present invention relates to a composition comprising a semi-crystalline, absorbable copolymer formulation wherein the first component is hydroxy-capped polycondensation product of diglycolic acid and a mixture of two idols, diethylene glycol (DEG) and ethylene glycol (EG), with DEG added in larger molar amount, and wherein the second component, glycolide is incorporated during the subsequent ring-opening polymerization. The resulting hydrophilic resin has low crystallinity level, glass transition temperature, Tg, slightly below room temperature, and may be particularly useful for making monofilaments, multifilaments, microspheres, or melt blown nonwoven constructs or other medical devices where fast hydrolysis rates and superior mechanical properties are desirable.
摘要:
A semi-crystalline, absorbable copolyester composition comprising the reaction product of a polycondensation polyester and at least one lactone, wherein the polycondensation polyester comprises the reaction product of diglycolic acid and/or a derivative thereof and diethylene glycol; and the copolyester comprises about 30 to 60% by weight of the polycondensation polyester based on the total weight of the copolyester. Also medical devices such as absorbable sutures comprising such copolyesters and absorbable microspheres comprising such copolyesters and methods of making of such absorbable microspheres.
摘要:
A method for preventing adhesion using a co-polyester comprising the reaction product of a polycondensation polyester and at least one lactone, wherein the polycondensation polyester comprises the reaction product of diglycolic acid and/or a derivative thereof and ethylene glycol; and the co-polyester comprises about 40 to 50% by weight of the polycondensation polyester based on the total weight of the co-polyester.
摘要:
A co-polyester which includes the reaction product of a polycondensation polyester and epsilon-caprolactone, wherein the polycondensation polyester comprises the reaction product of diglycolic acid and/or a derivative thereof and a diol. The co-polyester is injectable and absorbable into animal, such as human, tissue and can be used for facial cosmetic or reconstructive surgery of soft tissue. Another embodiment is directed to a method for preventing adhesion using a co-polyester comprising the reaction product of a polycondensation polyester and epsilon-caprolactone, wherein the polycondensation polyester comprises the reaction product of diglycolic acid and/or a derivative thereof and a diol, and the co-polyester comprises about 40 to 50% by weight of the polycondensation polyester based on the total weight of the co-polyester.
摘要:
The present invention relates to a composition comprising a semi-crystalline, absorbable copolymer formulation wherein the first component is hydroxy-capped polycondensation product of diglycolic acid and a mixture of two idols, diethylene glycol (DEG) and ethylene glycol (EG), with DEG added in larger molar amount, and wherein the second component, glycolide is incorporated during the subsequent ring-opening polymerization. The resulting hydrophilic resin has low crystallinity level, glass transition temperature, Tg, slightly below room temperature, and may be particularly useful for making monofilaments, multifilaments, microspheres, or melt blown nonwoven constructs or other medical devices where fast hydrolysis rates and superior mechanical properties are desirable.
摘要:
Provided are compositions comprising one or more compounds having a structure comprising a node structure with from four to twelve carbon atoms, one or more (poly)glyceryl groups, and one or more hydrophobic moieties, wherein each of the one or more (poly)glyceryl groups is linked to the node structure by a first primary linking group, the one or more hydrophobic moieties are each independently linked either to the node structure by a primary linking group or to one of the (poly)glyceryl groups by a secondary linking group, and wherein the polyglyceryl thickener has an average degree of glyceryl polymerization of from greater than 3 to less than about 11 and an average number of hydrophobic groups per primary linking group of about 0.35 or greater. Also provided are polyglyceryl compounds, compositions comprising water, a surfactant, and a polyglyceryl thickener, as well as, methods of making polyglyceryl compounds and compositions of the present invention.
摘要:
Provided are compositions comprising one or more compounds having a structure comprising a node structure with from four to twelve carbon atoms, one or more (poly)glyceryl groups, and one or more hydrophobic moieties, wherein each of the one or more (poly)glyceryl groups is linked to the node structure by a first primary linking group, the one or more hydrophobic moieties are each independently linked either to the node structure by a primary linking group or to one of the (poly)glyceryl groups by a secondary linking group, and wherein the polyglyceryl thickener has an average degree of glyceryl polymerization of from greater than 3 to less than about 11 and an average number of hydrophobic groups per primary linking group of about 0.35 or greater. Also provided are polyglyceryl compounds, compositions comprising water, a surfactant, and a polyglyceryl thickener, as well as, methods of making polyglyceryl compounds and compositions of the present invention.