Devices described herein include a stentriever for removing an occlusive clot. The stentriever can include a membrane cover on the proximal end which can be sized to form a seal with the tip of an intermediate catheter. Clot engagement sections and/or a distal engagement section of the stentriever can also include a full or partial membrane covering to control the direction of aspiration and/or areas where the aspiration applies suction to the thrombus or clot. The membranes can be used to direct the aspiration so as to pull the clot deeper into the clot engagement sections of the stentriever, thereby improving grip on the clot. The design can also increase the effectiveness of clot fragment protection for friable clots by providing pores and/or clot cells in a distal engagement section.

A containing element is used to capture material in a blood vessel for removal. The containing element is positioned within a constraining catheter while it is advanced through the blood vessel. A filament is coupled to the containing element which assists in opening and/or closing the containing element.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

Devices and methods for increasing or restoring a flow in a body lumen. The devices and the methods may treat conditions like stroke by removing a clot from a blood vessel and/or reopen the vessel. The device may include a plurality of engaging elements, a central wire, and proximal control element. The device may include a linking structure between engaging elements. The linking structure may include segments configured to respond differently upon the application of longitudinal loads. The positions of the engaging elements and the distance therebetween can be adjusted simultaneously or sequentially to promote the engagement of the clot or occlusion. The device may include be configured to inhibit or prevent the proximal engaging element from being pulled back into a microcatheter when pulling the central wire to pull the distal engaging element proximally and/or during retraction of the device holding a clot.

Devices and methods for securing a cover of a retrieval device while the retrieval device is resheathed to a more proximal position within a delivery sheath are disclosed herein. A retrieval device may include, for example, a securing element configured to grip the cover when the retrieval device is pulled proximally, to thereby secure the cover. A method of positioning the retrieval device may include, for example: (a) advancing the retrieval device distally through a delivery sheath to a partially deployed state while the securing element is in a first state, and (b) retracting the clot retrieval proximally from the partially deployed state while the securing element is in a second state that grips the cover to secure the cover.

Techniques and devices for removal of clot/material from body passages utilize a main carrying wire, a main elongated sleeve element braided from a plurality of wires to form a proximal tubular section having a proximal opening and a funnel-shaped distal section tapering distally onto a distal end portion of the main carrying wire for rigid attachment thereto, a deformable ring element coupled to the proximal opening of the main elongated braided sleeve element and configured for changing the proximal opening from a normally opened state to an at least partially closed state, and a control wire rigidly coupled to the deformable ring element for manipulating the proximal opening of the main elongated braided sleeve element between its normally opened and at least partially closed states for secure removal of the captured target clot from the blood vessel.

Disclosed is a thrombectomy stent system, comprising a thrombectomy stent, wherein the thrombectomy stent is roll-shaped, and the cross section of the thrombectomy stent is of an open-ring structure. Disclosed is a thrombectomy device, comprising the thrombectomy stent, wherein the thrombectomy stent is provided with a developing element that can accurately display the expansion state of the thrombectomy stent during thrombectomy and the specific position of the thrombectomy stent so as to determine the situation of the thrombectomy stent being fused with a blood vessel. Disclosed is a thrombectomy device system, comprising the thrombectomy stent and a push rod, wherein a proximal end of the thrombectomy stent is connected to the push rod, and the proximal end of the thrombectomy stent or the push rod is connected to a catching member; and the catching member is configured to receive the thrombectomy stent. The catching member can effectively catch a thrombus that is detached during the thrombectomy.

Mechanical thrombectomy apparatuses including an inverting, rolling conveyor region (“tractor”) at the distal end that are configured to grab and remove thrombus material. In particular, described herein are mechanical thrombectomy apparatuses that are adapted to prevent premature deployment of the tractor, e.g., by including a tractor hold (e.g., a housing, a lock, a clamp, etc.) or the like to secure the outer end of the tractor against and/or relative to the elongate inversion support.

A medical device for removing a material from a hollow anatomical structure is provided. The device may include a shaft member. The device may include an expandable centering element near the distal end of the device. The device may include a macerator element either attached to the shaft or independent and freely moveable from the shaft. Alternatively, the device may include a rotating wire attached to the macerator element. The device may include an aspiration lumen in for removal of material. The device may include a drive shaft attached to a motor and used to rotate the macerator element. The device may be used in combination with a distal occlusion element, which may be either a radially expandable filter or balloon member.

An interventional catheter for treating an artery includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck. The elongated body has an overall length such that the distal most section can be positioned in an intracranial artery and at least a portion of the proximal most section is positioned in the common carotid artery during use.