Novel biodegradable elastomeric scaffold for tissue engineering and light scattering fingerprinting methods for testing the same
申请人:Ameer Guillermo
公开号:US20050063939A1
公开(公告)日:2005-03-24
The present invention is directed to a novel biocompatible polymer that may be used in tissue engineering. More specifically, the specification describes methods and compositions for making and using a citric acid copolymers.
BIODEGRADABLE NANOCOMPOSITES WITH ENHANCED MECHANICAL PROPERTIES FOR SOFT TISSUE ENGINEERING
申请人:Ameer Guillermo
公开号:US20140135407A1
公开(公告)日:2014-05-15
The present invention is directed to a novel poly(diol citrates)-based nanocomposite materials created using completely biodegradable and biocompatible polymers that may be used in tissue engineering. More specifically, the specification describes methods and compositions for making and using nanocomposites comprised of citric acid copolymers and polymers including but not limited to poly(L-lactic acid) (PLLA) and poly(lactic-co-glycolic acid) (PLGA).
APPLICATOR FOR DEPOSITING A LAYER OF ADHESIVE OR SEALANT COMPOSITION ON A BIOLOGICAL AND/OR PROSTHETIC TISSUE
申请人:Gecko Biomedical
公开号:EP3560427A1
公开(公告)日:2019-10-30
The invention relates to an applicator (1) for depositing a layer of adhesive or sealant composition on a target site of a biological and/or prosthetic tissue, the applicator (1) comprising a body (2) having an application face (7) intended to be positioned facing the biological and/or prosthetic tissue, and comprising:
- a first outlet opening (9) provided in the application face (7), the first outlet opening (9) being shaped as a slot for allowing the adhesive or sealant composition to flow out of the applicator (1) and to form the layer of adhesive or sealant composition,
- a second inlet opening (14) provided in the application face (7), adjacent the first outlet opening (9), for allowing pollutants or undesirable elements to be removed from the target site while depositing the layer of adhesive or sealant composition,
wherein the first outlet opening (9) has a first section and the second inlet opening (14) has a second section, the second section being greater than the first section.
APPLICATOR, KIT AND METHOD FOR APPLYING AN ADHESIVE COMPOSITION ON A SUPPORT, SUCH AS A TISSUE REPAIR SUPPORT
申请人:TISSIUM
公开号:EP4029457A1
公开(公告)日:2022-07-20
An applicator (1) comprising: a body (2) defining a chamber (14) for storing an adhesive composition, and an outlet (16) for delivering the adhesive composition stored in the chamber (14), a piston (4) mobile in translation relative to the body (2), a drive element (6) mobile in rotation relative to the body (2), and configured to be releasably engaged with a guide (100, 200, 300) external to the applicator (1), wherein rotating the drive element (6) relative to the body (2) causes the piston (4) to translate relative to the body (2) so as to reduce a volume of the chamber (14) and force the adhesive composition out of the applicator (1) through the outlet (16).
Method comprising contacting tissue with a cross-linkable polyester prepolymer
申请人:Massachusetts Institute of Technology
公开号:US10179195B2
公开(公告)日:2019-01-15
The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
本发明在各个方面提供了可生物降解的弹性聚合物。在不同的实施方案中,聚合物是由多官能醇或醚与双官能酸或高阶酸反应形成预聚物,经交联形成弹性可生物降解聚合物。在优选的实施方案中,交联是通过乙烯基对预聚物骨架上的一个或多个 OR 基团进行官能化,然后进行光聚合反应,形成弹性可生物降解聚合物组合物或材料。最好使用丙烯酸酯将一个或多个乙烯基添加到预聚物的骨架上,形成丙烯酸化预聚物。在不同的实施方案中,丙烯酸化的预聚物与一种或多种丙烯酸化的共聚物共聚。