摘要:
Medical devices with polymer coatings designed to control the release of angiotensin-(1-7) receptor agonists from medical devices are disclosed. The present application also discloses providing vascular stents with angiotensin-(1-7) receptor agonist-containing controlled-release coatings. Methods for treating or inhibiting post-stent implantation restenosis as well as improving vascular endothelial function in patients are also provided.
摘要:
Medical devices with polymer coatings designed to control the release of angiotensin-(1-7) receptor agonists from medical devices are disclosed. The present application also discloses providing vascular stents with angiotensin-(1-7) receptor agonist-containing controlled-release coatings. Methods for treating or inhibiting post-stent implantation restenosis as well as improving vascular endothelial function in patients are also provided.
摘要:
Methods for making crosslinked material, such as collagen-based material, and bioprosthetic devices. The crosslinked material includes hydroxyl groups, carboxyl groups, and amine groups prior to crosslinking. The methods include removing at least a portion of the zero-length ester crosslinks in a crosslinked material and/or blocking at least a portion of the amine groups that are reactive with carboxyl groups and form zero-length crosslinks.
摘要:
Biocompatible metallic medical devices having silanized surfaces coupled to nucleophile residues that release sustained, therapeutic amounts of nitric oxide to specific sites within a mammalian body are provided. Additionally, the biocompatible metallic medical devices can also be provided with anti-thrombogenic, lubricious coatings that release sustained, therapeutic amounts of nitric oxide. Moreover, the silanized metallic devices are surprisingly durable when exposed to harsh chemical methods often needed to bind nitric oxide-releasing functional groups to nucleophile residues. Furthermore, methods are provided for producing stable, silanized, sustained nitric oxide-releasing metallic medical devices.
摘要:
A method of making a temporary medical electrical lead for pacing or defibrillating a heart of a patient. The method comprises providing at least one electrical conductor having proximal and distal ends; providing an insulating sheath formed of biocompatible material extending over and covering at least portions of the at least one electrical conductor, attaching an electrical connector assembly to the proximal end of the at least one electrical conductor for attachment to a device capable of providing pacing or defibrillation pulses; providing an electrode mounting pad in the form of a cast matrix structure made of a biodegradable, biocompatible material soluble in human body fluids and having an outer heart non-contacting surface and an inner heart contacting surface, the outer surface being less permeable to passage of body fluids than the inner surface and wherein the inner surface of the pad has larger interstices and is less dense than the outer surface; providing a drug for treating for treating a medical condition of the patient's heart; loading the drug into the matrix of the pad; and attaching at least portions of the distal end of the at least one electrical conductor or of the electrode member to the electrode mounting pad.
摘要:
A temporary cardiac electrical stimulating lead is disclosed where the lead body thereof may be removed from inside a patient through the application of a simple pulling force exerted on its proximal end. An electrode mounting pad is located at the distal end of the lead and has a stimulating electrode mounted thereon or therein. A distal end of the electrical conductor may serve as the stimulating electrode. The electrode mounting pad is preferably capable of biodegradably dissolving or otherwise dissociating over time in human body fluids. Thus, the lead body may be detached from the electrode mounting pad through the application of a simple pulling force and removed from the patient while the electrode mounting pad remains within the patient and dissolves or otherwise dissociates over time.
摘要:
A method for attaching a biomolecule having a plurality of carboxyl groups to an aminated solid surface by reacting the biomolecule with a carbodiimide to effect an activation of the carboxyl groups of the biomolecule, reacting the carbodiimide activated biomolecule with the solid surface to covalently bind the biomolecule to the aminated solid surface, and then selectively restoring carboxyl groups to the biomolecule. The selective restoration of carboxyl groups can be carried out by mild hydrolysis and restores the functionality of the biomolecule. The method is "selective" since the bonds between the biomolecule and the aminated solid surface remain intact.
摘要:
A temporary cardiac electrical stimulating lead comprises a stimulating electrode mounted in or on a biodegradable electrode mounting pad disposed at a distal end of the lead. The electrode mounting pad is capable of biodegradably dissolving over time in human body fluids and is loaded with a drug for therapeutically treating a medical condition of a patient's heart. The electrode mounting pad may be loaded with any of a variety of different drugs, such anti-arrhythmia or anti-inflammatory drugs. When the lead body is pulled away from the electrode mounting pad and removed from the patient, any portion of the electrode mounting pad remaining within the patient dissolves over time and disappears.
摘要:
A medical device having a surface graft matrix comprising carboxyl-functional groups located on the device, the surface graft matrix comprising an outer portion; and one or more biomolecules covalently coupled to the surface graft matrix, wherein a majority of the biomolecules are located in the outer portion of the surface graft matrix. The surface graft matrix can also be loaded with a pharmaceutical agent.