Rolling tractor tube mechanical thrombectomy apparatuses that may be deployed from out of a catheter in situ are described herein. These apparatuses may be delivered out of a catheter from a collapsed delivery configuration within the catheter to a deployed configuration out of the catheter, in which the same catheter is re-inserted between a tubular tractor and an elongate puller. In particular, any of these methods and apparatuses may be adapted to work with a tractor tube having an open end that is biased open, including using an annular bias.

The present disclosure provides a guide wire system comprising (a) a guide wire having a distal end and a proximal end, wherein the guide wire comprises a superelastic material, (b) a first connector coupled to the proximal end of the guide wire, (c) a second connector coupled to the guide wire between the distal end and the proximal end, (d) an electromagnetic sensor coupled to the distal end of the guide wire, and (e) a polymeric tube surrounding the guide wire and at least a portion of the electromagnetic sensor.

A device is disclosed for occluding an anatomical passage between first and second anatomical structures. The device includes a tip portion having a proximal element connected to a distal element through a member. The proximal element and/or distal element is movable axially along the tip portion while the other element preferably remains fixed in place. A handle is coupled to a proximal end of the tip portion through a shaft. The tip portion is positioned across the anatomical passage so that the proximal element occludes a first side of the passage and the distal element occludes a second side of the passage. A locking structure, such as a nut, is positioned or crimped against the proximal element, and, once done, the tip portion is released at the occluded passage.

A method and apparatus for treating a clot in the blood vessel of a patient, and particularly the treatment of a pulmonary embolism is disclosed. The treatment includes restoring flow through the clot followed by clot removal, either partially or substantially completely. The clot treatment device is expandable into the blood vessel and may contain radial extensions that assist in restoring flow as well as in removing clot material.

An accessory device may be used in combination with a thrombectomy catheter. The accessory device may be configured to deflect a distal portion of the thrombectomy catheter and/or disrupt a lesion in a vessel.

Rotational atherectomy devices and systems can remove or reduce stenotic lesions in blood vessels by rotating one or more abrasive elements within the vessel. The abrasive elements are attached to a distal portion of an elongate flexible drive shaft that extends from a handle assembly that includes a driver for rotating the drive shaft. In particular implementations, the handle assembly encapsulates an electric motor assembly, a pump assembly, and a controller assembly.

A device for fracturing calcifications in heart valves includes a stabilizer and an impactor movable towards each other. The impactor includes one or more impactor arms, each of which extends distally from a proximal cap. The impactor further includes one or more lever arms each of which is distally coupled to a lever cap and proximally coupled to a corresponding one of the one or more impactor arms. The lever cap slides on a shaft which extends towards the proximal cap. Proximal movement of the lever cap towards the proximal cap causes the one or more lever arms to deform and to push against the one or more impactor arms and to cause the one or more impactor arms to deform.

An atherectomy system is adapted for both anterograde ablation and retrograde ablation, and includes a drive coil and an atherectomy tool coupled to the drive coil, the atherectomy tool including a distal region adapted for anterograde ablation and a proximal region adapted for retrograde ablation. A proximal handle includes an actuation member adapted to be movable in a first direction to urge the atherectomy tool in an anterograde ablation direction and to be movable in a second direction to urge the atherectomy tool in a retrograde ablation direction. The atherectomy system is adapted such that the actuation member provides a similar feedback to a user regardless of whether the atherectomy tool is ablating in the anterograde ablation direction or in the retrograde ablation direction.

Described are medical graft products, systems, and methods for treating fistulae. Certain products of the invention are configured to have portions residing in and around a primary fistula opening, e.g., one occurring in a wall of the alimentary canal. One such product includes a biocompatible graft body which is configured to block at least the primary opening. The graft body includes a capping member, which is configured to contact portions of the alimentary canal wall adjacent to the primary opening, and an elongate plug member extending from the capping member, which is configured to extend into at least a portion of the fistula. In certain embodiments, a graft body component has the capacity to expand or otherwise change form to provide a suitable capping arrangement. Such a component can include a resilient wire frame, e.g., one that is self-expandable or one that requires at least some manipulation in order to expand.

An elongate endovascular element for crossing through an obstruction in a blood vessel comprises: a proximal section; a distal tip section of smaller diameter than the proximal section; and a distally-tapering intermediate section extending between the proximal and distal tip sections; wherein the tapered intermediate section has a length that is substantially λ/2 or a multiple of λ/2, where λ is a wavelength of a driving frequency that will produce longitudinal resonance in the element.