摘要:
According to the invention there is provided inter alfa a medical device for delivering a therapeutic agent to a tissue, the device having a solid surfactant-free particulate coating layer applied to a surface of the device, the coating layer comprising a therapeutic agent and at least one non-polymeric organic additive which is hydrolytically stable; wherein at least a proportion of the particulate coating layer comprising the therapeutic agent and the at least one organic additive melts as a single phase at a lower temperature than the melting point of the therapeutic agent and the at least one organic additive when in pure form; wherein the therapeutic agent is paclitaxel; and wherein the therapeutic agent, when formulated in the coating layer, is stable to sterilization.
摘要:
Various aspects of the present invention provide compositions and implantable devices including a water-insoluble therapeutic agent solubilized in a matrix of a gallate-containing compound. Other aspects provide methods of manufacturing and using such compositions and devices
摘要:
Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and/or compounds may be utilized to promote healing, including the prevention of thrombosis. The drugs, agents, and/or compounds may also be utilized to treat specific disorders, including vulnerable plaque, and atherosclerosis in type 2 diabetic patients. Therapeutic agents may also be delivered to the region of a disease site. In regional delivery, liquid formulations may be desirable to increase the efficacy and deliverability of the particular drug. Various materials and coating methodologies may be utilized to maintain the agents or compounds on the medical device until delivered and positioned.
摘要:
Methods for treating or preventing neointima stenosis are disclosed. The methods generally involve the use of a TGFβ inhibitor, a SMAD2 inhibitor, an FGF Receptor agonist, a Let-7 agonist, or a combination thereof, to inhibit endothelial-to-mesenchymal transition (Endo-MT) of vascular endothelial cells into smooth muscle cells (SMC) at sites of endothelial damage. The disclosed methods can therefore be used to prevent or inhibit neointimal stenosis or restenosis, e.g., after angioplasty, vascular graft, or stent. Also disclosed are methods for increasing the patency of biodegradable, synthetic vascular grafts using a composition that inhibits Endo-MT. A cell-free tissue engineered vascular graft (TEVG) produced by this method is also disclosed.
摘要:
The present invention provides electrospun fibrous materials with various potential applications in the healthcare industry. Unique fiber morphologies are provided, which can allow the fibrous materials to exhibit a range of desirable properties. The electrospun fibrous materials are advantageously biocompatible and may be tailored for certain specific applications, e.g., by the incorporation of one or more therapeutic agents. Exemplary materials described herein can be employed in controlled, localized drug delivery, tissue engineering, and wound healing applications.
摘要:
A drug delivery balloon is provided, the a balloon having an outer surface, and a tunable coating disposed on at least a length of the balloon surface. The tunable coating includes a first therapeutic agent and a first excipient, and a second therapeutic agent and a second excipient. The first and second therapeutic agents have different dissolution rates during balloon inflation and therefore provide a coating that is tunable.
摘要:
The present disclosure comprises a polymeric substrate that provides multiple releases of active agents. A substrate for multiple phase delivery of active agents is provided having a first polymer matrix layer having a first active agent disposed therein, a second polymer matrix layer having a second active agent disposed therein, and a coacervate layer disposed between the first polymer matrix layer and the second polymer matrix layer. Selected first and second active agents are included in the first and second polymer matrices such that as the first and second polymer matrices dissolve, the active agents are released. Multiple phase active agent release is achieved by constructing multiple layers of a polymer matrix containing an active agents formed with polymers having different solubility characteristics or with active agents at different concentration levels.
摘要:
Embodiments of the present invention include methods for the treatment, prevention, or amelioration of vascular disease and/or disorder in diabetic patients. The methods include implantation of a stent including a drug, and the use of a drug coated balloon. The DES may be a DES having a metal body and a coating including the drug, or a bioabsorbable stent with drug in the body of the stent, in a coating on the stent, or both in the body of the stent and in a coating on the stent.
摘要:
Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic drugs, agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and/or compounds may be utilized to promote healing, including the formation of blood clots. Various materials and coating methodologies may be utilized to maintain the drugs, agents or compounds on the medical device until delivered and positioned.
摘要:
A medical device having an antimicrobial coating. The device has a first coating layer having an antimicrobial agent over at least part of the outer surfaces of the device. The first coating has an outer surface. There is a second discontinuous polymeric coating containing an antimicrobial agent, which is on top of and covering part of the outer surface of the first coating. The second discontinuous coating has a microstructure.