Implants for prevention of cold welding, corrosion and tissue overgrowth on surfaces between medical implant components include a first medical implant component having a first implant contact surface, a second medical implant component having a second implant contact surface positionally interfacing with the first implant contact surface of the first medical implant and a separation coating material on at least one of the first implant contact surface and the second implant contact surface. Methods for prevention of cold welding and/or corrosion between and/or tissue/bone overgrowth on implant components and methods of scaling an interface between a first implant component and a second implant component in a prosthesis system are also disclosed.

Methods for prevention of cold welding and/or corrosion between and/or tissue/bone overgrowth on implant components may include obtaining a first medical implant component having a first implant contact surface; obtaining a second medical implant component having a second implant contact surface, the second implant contact surface adapted for placement into contact with the first implant contact surface, the first implant contact surface and the second implant contact surface encompassing all points of contact between the first medical implant component and the second medical implant component; and applying a nonmetallic biocompatible separation coating material having a wax formulation on at least one of the first implant contact surface and the second implant contact surface, the nonmetallic biocompatible separation coating material separates the first implant contact surface from the second implant contact surface at all of the points of contact between the first medical implant component and the second medical implant component. Medical implant for prevention of cold welding, corrosion and tissue overgrowth on medical implant components are also disclosed.

A stent has a base body coated with a coating and extending in an axial direction, the base body has a plurality of mutually connected struts, each strut having at least one curved section which has a concave side and a convex side, the stent being expandable from an initial state into an expanded state, a curvature of the curved section being reduced in the expanded state compared to the initial state, and a surface structure on the concave side and/or a layer of a placeholder material between the coating and the curved section.

A biodegradable in vivo supporting device is disclosed. In one embodiment, a coated stent device includes a biodegradable metal alloy scaffold made from a magnesium alloy, iron alloy, zinc alloy, or combination thereof, and the metal scaffold comprises a plurality of metal struts. The metal struts are at least partially covered with a biodegradable polymer coating. The biodegradable scaffold includes a radio-opaque marker made of a substance that blocks radiation. A cavity is manufactured in the scaffold and the radio-opaque marker is accommodated by the cavity.

An orthotopic artificial bladder endoprosthesis includes a casing made of a PGA fiber fabric; the casing having two first connectors for the connection with the ureters of a patient and a second connector for the connection with the urethra of a patient; a support element being inserted in the casing; the support element being switchable between an extended configuration, in which it supports and maintains in position the casing, and a retracted configuration.

The present disclosure provides for a double cone filter and a delivery apparatus for deploying the filter within the body. The filter may have superior and inferior rings connected to each other by a plurality of connectors. The rings may have a first degradation rate, and the connectors may have a second degradation rate. The second degradation rate may be faster than the first degradation rate, such that the connectors degrade faster than the rings. In this way, the filter has a filtering state when the connectors are present. After the connectors degrade or partially degrade, the rings may relax against the vessel wall in an open state. After a sufficient length of time, the rings also degrade such that the filter is completely removed from the body.

A medical device that is at least partially coated with an enhancement layer, and a method for inserting the medical device a patient. One non-limiting type of enhancement layer that can be used includes titanium oxynitride or titanium nitride oxide (TiNOx) and/or zirconium oxynitride (ZrNxOy).

Certain examples of the disclosure concern a guard member for a docking device configured to receive a prosthetic valve. The guard member can include an expandable member and an elastic member extending along an axial length of the expandable member. The expandable member can be movable between a radially compressed state and a radially expanded state. When the expandable member is in the radially compressed state, the elastic member can be in an axially stretched state. The elastic member in the axially stretched state can be configured to return to a resting state, thereby moving the expandable member from the radially compressed state to the radially expanded state.

A medical implant includes a base portion configured for implantation into a bone of a patient. The base portion is formed from an electrically insulating and biocompatible base material with retaining features on an outer surface of the base portion for gripping the bone in the patient and at least two discontinuous regions formed of titanium on the outer surface.

A biodegradable double-J stent and a method of manufacturing a biodegradable double-J stent are provided. The stent comprises a main tube, a first retaining tube, and a second retaining tube, each fabricated from a biodegradable material. The first and second retaining tubes are curl-shaped and are connected to two ends of the main tube, respectively. The method of manufacturing a biodegradable double-J stent comprises the steps of: (a) providing a tube made of a biodegradable material; and (b) bending two ends of the tube to render the two ends curl-shaped and keeping a middle segment between the two ends straight. The two curl-shaped ends define a first retaining tube and a second retaining tube, respectively, and the middle segment defines a main tube. The biodegradable double-J stent precludes a ureteral obstruction which might otherwise occur with conventional double-J stents not removed in a timely manner.