摘要:
A medical device delivery system, having a rolling retractable sheath covering a medical device mounting region on the system is disclosed. The rolling retractable sheath comprises an inner wall and an outer wall and may be formed of one or more materials, optionally porous. Optionally, a lubricant may be applied selectively to the interior and exterior walls of the stent.
摘要:
In one embodiment, the present disclosure provides a biodegradable, self-powered medical device for preventing or reducing reperfusion injury, comprising a galvanic cell, the galvanic cell comprising: a first biodegradable electrode member; and a second biodegradable electrode member comprising a biodegradable conductive polymer and an electrode-releasable therapeutic agent, wherein the galvanic cell generates an electric force sufficient to cause the electrode-releasable therapeutic agent to be released from the biodegradable conductive polymer and elute to a target location. The device may further include a reservoir material containing a burst-release therapeutic agent.
摘要:
An intravascular filter for a vessel includes a non-biodegradable apical hub and non-biodegradable struts extending generally distally from the hub. The struts extend radially outward from a longitudinal axis of the hub. The distal ends of the struts exert an expansile force against an interior of the vessel. One or more struts includes one or more time-degrading connectors along its length, which can be formed from a biodegradable element made from a fixation material. Prior to degradation, the fixation material rigidly connects a proximal section to a distal section of the respective strut. After degradation, the fixation material is dissolved or softened, and reveals a link that has a strong resistance to longitudinal movement of the distal section with respect to the proximal section and may have a weak resistance to rotational movement of the distal section with respect to the proximal section, such as a pair of interlocked loops.
摘要:
Methods, apparatus, and systems for occluding a multiplicity of parallel membranes, such as found in a patent foramen ovale (PFO). Methods, apparatus, and systems include the use of a positioning device that can be seated on the limbus of the septum secundum (SS). The positioning device includes a piercing member that can pierce the SS and septum primum (SP). The positioning device also includes a fastening member that can engage the SS and SP to fasten the tissues and occlude a PFO.
摘要:
A medical device delivery system is disclosed which has a distal inner sheath and a distal outer sheath covering a medical device mounting region and any medical device mounted thereon. The outer sheath is designed to retain the medical device for lengthy periods of time while the inner sheath is designed to retain the sheath for shorter periods of time.
摘要:
A medical device delivery system is disclosed which has a distal inner sheath and a distal outer sheath covering a medical device mounting region and any medical device mounted thereon. The outer sheath is designed to retain the medical device for lengthy periods of time while the inner sheath is designed to retain the sheath for shorter periods of time.
摘要:
An improved multi-function catheter structure having an inflatable balloon structure at its distal end, to selectively occlude a vascular lumen, provide antegrade perfusion liquid distally of the inflatable balloon, and provide retrograde perfusion proximally of the inflatable balloon is described.