A valved endoprosthesis releasing device and a valved endoprosthesis pertaining to the medicine area, more particularly a device for releasing valved endoprosthesis specifically developed for the combined endovascular treatment of aortic valve disease and ascending aorta segment, said device allowing the assembly to travel endovascularly until the valved endoprosthesis is specifically coupled to repair injured segments of the ascending aorta and replace the calcified aortic valve, besides restoring the anatomy and assuring the consolidation of a suitable blood flow in the region to be treated. The invention comprises a valved endoprosthesis releasing device consisting of several overlapped tubular segments, wherein the movement of the sheath tube releases the valved endoprosthesis coupled to the proximal region for endovascular implantation by expanding the balloon or self-expanding a valved endoprosthesis provided with a tubular body coupled to an aortic valve.

A system for treating a body lumen including a first stent configured to be positioned in a body lumen and a second stent configured to be positioned in the lumen of the first stent prior to removing the first stent from the body lumen. The first stent includes a liner disposed radially inward of the tubular scaffold of the first stent to permit tissue ingrowth within a tissue ingrowth region defined between the liner and the tubular scaffold. The retrieval stent is configured to be expanded within the previously implanted first stent to cause tissue to recede from the tissue ingrowth region to facilitate removal of the first stent from the body lumen.

A vascular shunt frame with improved apposition including a main body tube; at least one end of the main body tube is provided with a sealing covering; the sealing covering is provided with a main blood flow opening; a shaping component is disposed at the edge of the main blood flow opening. When the main body stent is inserted into the main blood flow opening of the main body tube, the shaping component can be closely attached to the outer surface of the main body stent, such that the sealing covering closely fits the outer surface of the main body stent to prevent endoleaks. The present disclosure also provides a vascular stent provided with an apposition-improved vascular shunt frame.

Expandable devices are disclosed herein. Several of the embodiments are directed towards an expandable device comprising a mesh configured to be expanded at a blood vessel bifurcation of a human patient. The mesh may comprise a tubular body portion and one or more circumferentially discontinuous articulating portions. The mesh may be expanded such that the one or more articulating portions are positioned at an angle to the tubular body portion.

A thrombus engagement tool having a flexible shaft, a clot engagement tip, and a handle. The engagement tip may include one or more radially outwardly extending structures such as a helical thread. The helical thread can be advanced through a catheter to engage a clot. The handle may be configured to be rotated by hand. When the handle is rotated, the helical thread of the engagement tip can rotate in the same direction thereby allowing the helical threat to engage the clot. The helical thread can wrap around the flexible shaft at least about one, two, or four or more full revolutions, but in some cases no more than about ten or no more than about six revolutions.

The present invention provides cervical implant (30) comprising an upper surface (38), a lower surface (40), a posterior portion (34) and an anterior portion (36) and including a perimeter (42) and one or more apertures (44,46) within said anterior portion for receiving securing means, said apertures having respective longitudinal axes M1, M2, characterised in that said axes extend in a direction substantially through said anterior portion (36) and converge at a point in a plane outside of said perimeter (42).

A minimally-invasive annuloplasty ring for implant at a mitral annulus. The annuloplasty ring has an inner core member with a C-shaped plan view that generally defines an oval with a major axis and a minor axis, and is symmetric about the minor axis. A posterior portion of the core member bisected by the minor axis has a thicker radial dimension than a pair of free end regions terminating on an anterior side of the core member. The radial thickness smoothly transitions between the posterior portion and the end regions. The inner core member may be covered with a fabric, and is a superelastic metal so that it can be straightened out and delivered through an access tube. The curvatures and thicknesses around the core member are selected so that the strain experienced when straightened does not exceed 7-8%.

A support ring for an aortic prosthesis includes a helical coil extending in an arc and defining a space between a helical coil first end and helical coil second end in opposing relation to each other. A wire extending through the lumen defined by the helical coil includes a wire first end and a wire second end that are fixed to each other, and a length between the wire first end and the wire second end that traverses the space between helical coil first end and the helical coil second end. A branch sleeve assembly includes a graft sleeve having a proximal end that defines a plane that intersects a plane defined by the distal end of the graft sleeve, and a support ring fixed to the graft sleeve wall that is closer to the proximal end of the graft sleeve than to the graft sleeve distal end.

A radially expandable, tubular stent, includes a first section having a first crush resistance force and a second section have a second crush resistance force, wherein the first crush resistance force is less than the second crush resistance force. The first section is connected to the second section to form a tube, connection of the first and second sections extending in an axial direction of the tube.

A prosthetic graft assembly (40, 120) is disclosed for placement of a patient's aortic arch and repair of the descending aorta in a procedure which requires only a sternotomy. The assembly includes a descending graft element (40) which includes an eversible cuff (52) which can be wrapped over a cut end (26) of the descending aorta (18). Distal perfusion can be re-established prior to aortic arch replacement. A second prosthetic element (120), optimised to the patient, is fitted with a replacement for the aortic arch and attached to the descending aorta graft (40). An introducer assembly (30) having a transparent or translucent sheath (70) enables the descending aortic graft element (40) to be deployed without the use of x-rays.