A method of diverting fluid flow from a first vessel including an occlusion to a second vessel includes deploying a prosthesis at least partially in a fistula and making valves in the second vessel incompetent. Making the valves in the second vessel incompetent includes at least one of using a reverse valvulotome to cut the valves, inflating a balloon, expanding a stent, and lining the second vessel with a stent.

Vascular cutter devices, systems, and methods are provided to effectively cut and remove all types of thrombus and atheroma tissue, whether soft, tough, or hard, and can do so with a reduced risk of suffering vessel injuries while avoiding an undesirable volume of blood loss during procedures. Thrombectomy systems having curved tubular cutting devices, and methods of using them, are provided. These systems, devices, and methods can (i) effectively cut and remove a variety of thrombus tissue from blood vessels, including soft, tough, and hard tissue; (ii) safely self-collect and remove tissue particles to avoid release of emboli; (iii) effectively treat a blood vessel with a reduced risk of suffering vessel injuries that can lead to increased stenosis; and (iv) effectively reduce blood loss during a procedure.

The present technology is directed generally to devices, systems, and methods for capturing and cutting fibrous and trabeculated structures (such as synechiae) in vessel lumens. In one embodiment, the present technology includes an intraluminal tissue modifying system configured to capture the fibrous structures, put the fibrous structures in tension, and controllably cut through the fibrous structures without applying appreciable additional force to the vessel wall. The system may include an expandable capture device and a cutting device.

The disclosure provides various embodiments of catheters having articulable ends that can be used for various procedures. Embodiments of methods are also provided that can be performed with catheters in accordance with the present disclosure.

The disclosure provides various embodiments of systems to facilitate the cutting of tissue structures and other tissue structures percutaneously.

The present disclosure relates to delivery assemblies for implantation of a prosthetic valve within a valvular structure in which an opening was formed in a host leaflet. In an example, the delivery assembly comprises a guest prosthetic valve and a delivery apparatus that includes an outer balloon, and an inner balloon axially movable relative to the outer balloon. The delivery apparatus can be advanced towards the host leaflet structure with the inner balloon kept in a concealed position. The inner balloon can then be advanced relative to the outer balloon, so as to be positioned inside the host leaflet, and inflated to form a leaflet opening within the host leaflet. The inner balloon can then be deflated and the outer balloon can be advanced into the leaflet opening, and inflated with the guest prosthetic valve disposed thereover, so as to expand the guest prosthetic valve inside the leaflet opening.

A transcatheter valve laceration device (10, 100) includes a leaflet support frame (12, 112) and a leaflet cutting assembly (14, 114), both of which are movably mounted on a guiding structure (16, 116) and movable between contracted and expanded orientations. In the expanded orientation, a blade protector (24, 124) of the leaflet support frame (12, 112) is positioned over a cutting element (36, 136) of the leaflet cutting assembly (14, 114).

Described here are devices, systems, and methods for improving blood flow in a vessel. Generally, the method may comprise advancing a catheter into a first vessel proximal to an occlusion in the first vessel and forming a fistula between the first vessel and a second vessel. This may deliver blood flow around an occlusion to ischemic tissues located in the peripheral vasculature.

A catheter for forming a fistula between two vessels. The catheter comprises a catheter body having a longitudinal axis, an electrode extending radially from the catheter body for contacting a vessel wall and forming the fistula, and a cutting unit disposed proximally or distally of the electrode for cutting a venous valve.

A leaflet resection device includes a first jaw, a second jaw pivotably connected to the first jaw, a first linkage assembly coupled to the first jaw, and a second linkage assembly coupled to the second jaw. The second linkage assembly includes a first resection blade and a second resection blade that are configured to cut a leaflet of a native heart valve or a previously implanted valve prosthesis along a curved path when the first and second linkage assemblies are actuated.