Implantable luminal devices

Inventors

Rudakov, Leon • Black, Andrew • Leopold, Andrew R. • Jensen, Kelly

Assignees

Artventive Medical Group Inc

Abstract

An implant may include a frame and a cover to facilitate endoluminal vessel occlusion, selective release of embolic material toward a target region, and/or endoluminal stenting. The frame of the implant provides radial expansion properties to secure the cover within a body vessel. The cover and/or the frame can occlude flow of a fluid through the body vessel.

Core Innovation

The invention relates to implant delivery systems for endoluminal vessel occlusion, endoluminal stenting, and endovascular or implant occlusion devices and delivery systems. An implant is held on a catheter in a relaxed state, compressed state, torsional state, or collapsed state, and is delivered via catheter-based systems to apply mechanical force to the catheter.

The catheter includes a kerf extending into the catheter lumen and extending in a first helical direction along a helical coil, defining adjacent windings and opposing sides. The implant engages proximal and distal portions of the catheter, and the implant applies torque to the catheter to pull opposing sides of adjacent windings toward each other or to reduce a width or pitch of the kerf between adjacent windings.

The kerf may include non-linear profiles such as triangular, sawtooth, undulating, or concave profiles, and adjacent windings may be separated by a gap in the relaxed state. The systems include a support frame having proximal and distal end regions and connection structures such as anchors and connection bridges, and the implant transitions from a relaxed state to a collapsed state while engaging the catheter distal portion.

Claims Coverage

The consolidated claims coverage includes three independent method claims. The inventive features center on a catheter with a kerf defining movable helical windings, and an implant engaged at proximal and distal ends to apply torque, with three overlapping claim themes: torsional-state pulling of adjacent windings, relaxed-to-collapsed state reduction of kerf width or pitch, and compression of an implant in a collapsed state to reduce a gap width or pitch between adjacent windings.

The independent claims collectively cover engaging an implant with proximal and distal catheter portions so the implant is held in a torsional or collapsed state and applies torque to the catheter. The torque is used to pull opposing sides of adjacent windings toward each other or to reduce a width or pitch of kerf-defined spacing or a gap between adjacent windings.

Stated Advantages

Documented Applications