Abstract: A bioerodible endoprosthesis includes a bioerodible magnesium alloy. The bioerodible magnesium alloy includes magnesium, between 7 and 8 weight percent aluminum, between 0.4 and 0.8 weight percent zinc, and between 0.05 and 0.8 weight percent manganese.

Abstract: Medical devices, such as stents, and methods of making the devices are disclosed. In some embodiments, a method includes diffusing a first element into a first portion of the medical device. The first element includes carbon, hydrogen, nitrogen, oxygen, or combinations thereof. The first portion includes a refractory material.

Abstract: A hydrophilic ceramic coating is formed on an endoprosthesis preform. The hydrophilic ceramic coating is porous and can store nano-sized drug particles.

Abstract: Systems and methods for a resonator with an adjustable capacitance for a medical device. In one embodiment, a resonator system includes a resonator device with an LC resonator circuit that has an adjustable capacitance, an inductor coil in series with the adjustable capacitance, and an adjustable capacitance control that can control the adjustable capacitance to obtain different particular capacitance values. This embodiment also includes a medical device, positioned with the resonator device, so that at least a portion of the inductor coil surrounds a space that is surrounded by at least a portion of the medical device.

Abstract: Among other things, a bio-erodible implantable endoprosthesis comprises a member that includes (a) a core having a surface, and (b) a bio-erodible metal on a least a portion of the surface of the core, wherein the bio-erodible metal erodes more slowly than the core and includes openings through which physiological fluids can access the core upon implantation.

Abstract: An endoprosthesis includes an expandable tubular body defined by a plurality of struts. In some embodiments, the expandable tubular body includes a bioerodible metal that has at least a first surface region and a second surface region. The first and second surface regions can have different surface oxide compositions. In some embodiments, the first portion has a thermally altered microstructure and the second portion has a wrought microstructure. The thermally altered microstructure can be a cast microstructure comprising dendritic grains. The first portion forms at least a portion of an outer surface of the expandable tubular body. In some embodiments, the expandable tubular body includes iron or a bioerodible iron alloy and at least one surface of the expandable tubular body includes a substantially uniform coating of iron(III) oxide.

Abstract: A stent is adapted to be implanted in a duct of a human body to maintain an open lumen at the implant site, and to allow viewing body tissue and fluids by magnetic resonance imaging (MRI) energy applied external to the body. The stent constitutes a metal scaffold. An electrical circuit resonant at the resonance frequency of the MRI energy is fabricated integral with the scaffold structure of the stent to promote viewing body properties within the lumen of the stent.

Abstract: An endoprosthesis such as a coronary stent includes a polymeric reservoir of drug and an over coating formed of ceramic or metal for controlling elution of drag from the reservoir.

Abstract: An endoprosthesis, such as a stent, includes a ceramic, such as IROX, having a select morphology and composition.

Abstract: A medical device is provided comprising a catheter, a balloon mounted on the catheter, and a sheath comprising a shape memory material, the sheath being located around the balloon. The sheath has a protective condition in which the sheath forms a plurality of pockets in a generally closed position and an activated condition in which the pockets are in a generally open position. A therapeutic agent is located within the generally closed pockets of the sheath when the sheath is in the protective condition. The therapeutic agent is exposed for delivery to a target site when the sheath is transitioned from the protective condition to the activated condition.

Abstract: A medical implant includes a bioerodible portion adapted to degrade under physiological conditions. The bioerodible portion includes a bioerodible metal matrix and a salt or clay within the bioerodible metal matrix.

Abstract: A stent includes a first tubular element formed of a first bioerodible metal composition and second tubular element formed of a second biodegradable metal composition. The first and second tubular elements are concentrically arranged; and the first and second bioerodible metal compositions are different.

Abstract: A stent is adapted to be implanted in a duct of a human body to maintain an open lumen at the implant site, and to allow viewing body tissue and fluids by magnetic resonance imaging (MRI) energy applied external to the body. The stent constitutes a metal scaffold. An electrical circuit resonant at the resonance frequency of the MRI energy is fabricated integral with the scaffold structure of the stent to promote viewing body properties within the lumen of the stent.

Abstract: An endoprosthesis such as a coronary stent includes a luminal surface, at least a portion of which is covered with a first coating including a first drug, and an abluminal surface, at least a portion of which is covered with a second coating including a second drug. The first drug has a first eluting profile based on the first coating, and the second drug has a second eluting profile based on the second coating, the first eluting profile being different from the second eluting profile. Methods of making the same are also provided.

Abstract: The embodiments herein relate to an electrode having a porous coating including a fiber mesh, a multi-layer coating, and an outer coating, and a method of making the same. The various electrode coating embodiments include pores in the coating that prevent access by protein or cells while allowing for ion and/or liquid access.

Abstract: A medical device lead includes a thin profile conductor assembly. A proximal connector includes a proximal end that is configured to couple the lead to a pulse generator. An insulative lead body extends distally from the proximal connector. The conductor assembly extends distally from the proximal end within the lead body and includes a non-conductive tubular core member that defines a lumen, an outer insulative layer, and a multilayer conductor between the tubular core member and the outer insulative layer. The multilayer conductor is electrically connected to the proximal connector and includes a first conductive layer adjacent to the tubular core member and a second conductive layer adjacent to the first conductive layer opposite the tubular core member. A conductivity of the second conductive layer is greater than a conductivity of the first conductive layer.

Abstract: A hydrophilic ceramic coating is formed on an endoprosthesis preform. The hydrophilic ceramic coating is porous and can store nano-sized drug particles.

Abstract: A bioerodible stent, having a composition comprising Fe, Mn, Si and C has desirable mechanical, erosion, and physiological characteristics.

Abstract: A stent is adapted to be implanted in a duct of a human body to maintain an open lumen at the implant site, and to allow viewing body tissue and fluids by magnetic resonance imaging (MRI) energy applied external to the body. The stent constitutes a metal scaffold. An electrical circuit resonant at the resonance frequency of the MRI energy is fabricated integral with the scaffold structure of the stent to promote viewing body properties within the lumen of the stent.

Abstract: The embodiments herein relate to a coated electrode including a structured surface and a conductive layer and a method of making the same. The various electrode embodiments can include a surface topography that minimizes tissue attachment and thus facilitates removal of the electrode.