A peripheral vascular filter according to some aspects of the invention includes a filter body forming a cavity therein, the filter body having a proximal end and a distal end in a length-wise direction of the peripheral vascular filter, the filter body having an opening in the proximal end thereof; a spring system arranged proximal to the filter body and in mechanical connection with the filter body and with a filter wire, the spring system being stretchable along the length-wise direction; a plurality of retractor wires, each retractor wire having a distal end connected to the filter body, and a proximal end connected to spring system. In a deployed configuration, the spring system absorbs forces applied to the filter wire proximal to the filter body to prevent the peripheral vascular filter from becoming dislodged from a position in a peripheral vasculature.

A stented valve including a generally tubular stent structure that has a longitudinal axis, first and second opposite ends, a plurality of commissure support structures spaced from the first and second ends and extending generally parallel to the longitudinal axis, at least one structural wire positioned between each two adjacent commissure support structures, and at least one wing portion extending from two adjacent commissure support structures and toward one of the first and second ends of the stent structure. The stented valve further includes a valve structure attached within the generally tubular stent structure to the commissure support structures.

An embolic filter device has a tubular structure having a front end, a first section, a first section rear end, a left collection pocket formed in the first section rear end, a right collection pocket formed in the first section rear end, a first narrow passage, a second section, a second section front end, a second section rear end, a left second section collection pocket, a right second section collection pocket, a second narrow passage, and a rear end.

A medical device insertable into a blood vessel for effectively removing an object flowing in a biological lumen while reducing the burden on the living body includes an elongated shaft portion, and an expansion portion which is an elastically deformable cylindrical body having a plurality of gaps and in which a proximal portion or a distal portion of the cylindrical body is interlocked with the shaft portion. The expansion portion has a ring-shaped or annular bent portion which protrudes toward a proximal side position radially outside the expansion portion in a bent state of being bent along an axial direction, and an axial length of a second portion from the bent portion to a proximal end of the expansion portion is shorter than an axial length of a first portion from the bent portion to the distal end of the expansion portion.

Systems and methods for removal of thrombus from a blood vessel in a body of a patient are disclosed herein. The method can include: providing a thrombus extraction device including a proximal self-expanding member formed of a fenestrated structure, a substantially cylindrical portion formed of a net-like filament mesh structure having a proximal end coupled to a distal end of the fenestrated structure; advancing a catheter constraining the thrombus extraction device through a vascular thrombus, deploying the thrombus extraction device by stacking a portion of the net-like filament mesh structure outside of the catheter by distally advancing the self-expanding member until the self-expanding member is beyond a distal end of the catheter; retracting the self-expanding member to unstack the portion of the net-like filament mesh structure and to capture the portion of the thrombus; and withdrawing the thrombus extraction device from the body.

The invention provides a filter assembly including a string or wire such that a lasso type cincture is effected, said filter being openable and closeable while in deployed within a bodily vessel. A string lengthen or shorting adjustment mechanism, such as a ratchet or reel allows more length of string into the device or alternatively to shorten the length of available string in the system. The described invention, when used to ameliorate venous clots and most arterio-venous dialysis grafts, a filter-tipped aspirator is used downstream from the clot to capture and remove dislocated emboli. A method of using same is disclosed.

A valve-delivery-assist tool (20, 120, 220, 320) is provided for use during a transcatheter aortic valve implantation (TAVI) procedure on a native aortic valve. The valve-delivery-assist tool (20, 120, 220, 320) includes a delivery catheter (22); an aortic-valve cusp guide (24), which deflects laterally upon being released from the delivery catheter (22); and a conduction-tissue protector (26, 126), which includes a sheet (28, 128) and expands upon being released from a distal end (29) of the delivery catheter (22). The valve-delivery-assist tool (20, 120, 220, 320) is configured such that after lateral deflection of the aortic-valve cusp guide (24) and expansion of the conduction-tissue protector (26, 126), the released conduction-tissue protector (26, 126) and the released aortic-valve cusp guide (24) are axially stationary with respect to each other such that a distal-most point (30) of the released conduction-tissue protector (26, 126) is disposed distal to a distal-most point (32) of the released aortic-valve cusp guide (24). Other embodiments are also described.

An embolic protection device comprises a tubular filter body attached to a sheath. The tubular filter body has an open upstream end and a generally closed downstream end for capturing emboli. A self-opening passage through the emboli capture end of the tubular filter body allows multiple catheters to be advanced from the sheath or otherwise into the filter body simultaneously or sequentially. The sheath is attached to a peripheral support structure near the emboli capture end of the filter body to facilitate deployment and retrieval of the filter body through a restraining delivery catheter.

A medical device may include an elongate tubular member defining a tube lumen, and an expandable member disposed on the distal portion of the elongate tubular member including a lumen that is in fluid communication with the tube lumen. The expandable member is configured to expand from a collapsed delivery configuration to a distally-open expanded configuration and establish apposition with a vessel wall. A valve member in fluid communication with the tube lumen, and configured to selectively block and selectively allow for flow through the tube lumen. The device may be percutaneously-deployable downstream of a treatment site within a body lumen and may allow for selective removal and/or draining of fluid and/or material, such as embolic material, from a body lumen.

Disclosed herein are devices and methods for providing embolic protection in a patient's vascular system. In particular, the devices detailed herein are supported by a flexible scaffold that is coupled to a filter. When deployed into the peripheral or coronary vasculature of a patient, the embolic protection devices of the present disclosure collect and remove embolic debris as a prophylactic measure to lessen the risk of embolic associated complications.