摘要:
Biodegradable coatings that include natural biodegradable polysaccharides are described. The coating is formed from a plurality of natural biodegradable polysaccharides having pendent coupling groups.
摘要:
The invention provides medical articles that include more than one biocompatibility-promoting function. In one aspect, the invention provides a medical articles that include a polymeric matrix including more than one biocompatible agent, wherein each biocompatible agent is provided at a distinct portion of the medical article surface. Methods of making medical articles, as well as methods of using the same, are also described.
摘要:
In situ formed biodegradable occlusions including natural biodegradable polysaccharides are described. The matrix is formed from a plurality of natural biodegradable polysaccharides having pendent coupling groups.
摘要:
Biodegradable coatings and articles that include natural biodegradable polysaccharides are described. The coatings and articles are formed from a plurality of natural biodegradable polysaccharides having pendent coupling groups.
摘要:
Polymeric coatings that include coupled biomolecules are formed on the surface of articles, such as medical devices. A coated layer that includes a synthetic polymer including a reactive group is formed on a surface and then a biomolecule is attached to the reactive group. The synthetic polymer can be an acrylate polymer or an amine-containing polymer having pendent photoreactive groups.
摘要:
A crosslinkable macromer system and related methods of preparing the system and using the system in the form of a crosslinked matrix between a tissue site and an implant article such as a tissue implant or on the porous surface of a prosthetic device. The macromer system includes two or more polymer-pendent polymerizable groups and one or more multifunctional initiator groups. The polymerizable groups and the initiator group(s), when polymer-pendent, can be pendent on the same or different polymeric backbones. The macromer system provides advantages over the use of polymerizable macromers and separate, low molecular weight initiators, including advantages with respect to such properties as nontoxicity, efficiency, and solubility. A macromer system of the invention can be used as an interface between the tissue site and implant article in a manner sufficient to permit tissue growth through the crosslinked matrix and between the tissue site and implant. In a preferred embodiment, polymers with pendent polymerizable groups, for use in the macromer system, are prepared by reacting a polysaccharide polymer with a reactive moiety in an organic, polar solvent such as formamide.
摘要:
Pro-fibrotic coatings for medical articles are described that include a pro-fibrotic polymer such as collagen. The pro-fibrotic coatings can also include a thromboresistant polymer. The coatings can be formed by activation of photoreactive groups pendent or independent of the coating materials.
摘要:
Laminin-containing coatings for the surfaces of implantable medical devices are disclosed. The coatings promote the formation of vessels in association with the coated surfaces with minimal fibrotic resonse.
摘要:
The invention provides methods and compositions for providing biocompatible surfaces to medical articles. In particular the invention provides biocompatible coatings with heparin activity. In some aspects, the biocompatible coatings of the invention are able to release a bioactive agent. The coatings can be formed using biostable or biodegradable polymeric material and photoreactive groups. The invention also provides methods for improving the quality of bioactive agent-containing coatings by performing pre-irradiation of biocompatible coating compositions.
摘要:
The invention provides methods and compositions for providing biocompatible surfaces to medical articles. In particular the invention provides biocompatible coatings with heparin activity that are able to release a bioactive agent, wherein the coatings are formed using biostable or biodegradable polymeric material and photoreactive groups.