Matrices formed from a natural biodegradable material and that exhibit surface degradation in the presence of an enzyme are described. Matrices including a bioactive agent can be implanted or formed in a subject for release of the bioactive agent upon degradation of the matrix. The matrix can be provided in various forms, including coatings for implantable devices, implants, and in-situ formed matrices. The matrix can also be in the form of a medical device having a structure that is used to treat a medical condition.
描述了由天然可
生物降解材料形成的矩阵,并在存在酶的情况下表现出表面降解。包括
生物活性剂的矩阵可以植入或形成在受试者中,以在矩阵降解时释放
生物活性剂。矩阵可以以各种形式提供,包括可植入设备的涂层、植入物和原位形成的矩阵。矩阵也可以采用医疗器械的形式,具有用于治疗医学状况的结构。