Endovascular device with distal electrode
Inventors
KAUFMAN, EYAL • Gedulter, Matan • Eckhouse, Ronen
Assignees
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Publication Number
US-11553923-B2
Publication Date
2023-01-17
Expiration Date
Abstract
Consistent with disclosed embodiments, systems, devices, methods, and computer readable media for delivery of an endovascular instrument to a treatment site within a body may be provided. Embodiments may include a flexible, elongated sheath having a proximal end and a distal end. An embodiment may further include an inner wall of the sheath delimiting an inner lumen which may extend between the proximal end and the distal end of the sheath. The inner lumen may be sized to enable axial advancement of the endovascular instrument therethrough. The embodiments may also include at least one electrode within the distal section of the sheath. The electrode may be configured to selectively deliver an electric current through a segment of the endovascular instrument within the inner lumen.
Core Innovation
The medical device is configured for delivery of an endovascular instrument to a treatment site within a body. The device includes a flexible, elongated sheath with a proximal end and a distal end, and an inner lumen extending between the proximal end and the distal end, sized to enable axial advancement of the endovascular instrument therethrough while the sheath is positioned within the body.
An outer tube covers and is fixedly connected to at least the distal section of the sheath. Within the distal section of the sheath, at least one electrode is configured to selectively deliver electric current through a segment of the endovascular instrument within the inner lumen while the distal section of the sheath is positioned within the body, enabling severing of the instrument using the electric current delivered through the lumen segment.
In a paired-electrode configuration, the at least one electrode is a first electrode in a pair of spaced-apart electrodes, and the pair is configured to cause electric current to flow along a path from the first electrode to a second electrode. The electric current path is configured to sever the endovascular instrument along the path, and the outer tube includes the second electrode.
Claims Coverage
The relevant independent claim covers one medical device inventive configuration with five inventive features: a flexible elongated sheath with inner lumen, an outer tube connected to the distal section, distal electrodes that selectively deliver electric current through a segment of an endovascular instrument while the sheath is positioned in the body, a paired-electrode current path that severs the instrument along the path, and the outer tube including a second electrode.
Sheath with inner lumen for axial advancement of endovascular instrument
A flexible, elongated sheath having a proximal end and a distal end, with an inner lumen extending between the proximal end and the distal end, sized to enable axial advancement of the endovascular instrument therethrough.
Outer tube covering fixedly connected to distal sheath section
An outer tube covering and fixedly connected to at least the distal section of the sheath.
Distal electrodes selectively deliver electric current through instrument segment while in body
At least one electrode within the distal section of the sheath configured to selectively deliver an electric current through a segment of the endovascular instrument within the inner lumen while the distal section of the sheath is positioned within the body.
Paired spaced-apart electrodes define current path to sever along the path
The at least one electrode is a first electrode in a pair of spaced-apart electrodes, wherein the pair of electrodes is configured to cause electric current to flow along a path from the first electrode to a second electrode and to sever the endovascular instrument along the path.
Outer tube includes second electrode
The outer tube includes the second electrode.
The core coverage is a sheath-based endovascular delivery device with lumen-delivered instrument segment severing by selective electric current, including an electrode pair and the second electrode provided by the outer tube.
Stated Advantages
Reduced detachment steps.
Protection from inadvertent current via electrode placement within the sheath.
Enables electric-current delivery sufficient to sever the endovascular instrument along an electric-current path while the distal section of the sheath is positioned within the body.
Documented Applications
Endovascular coil embolization for aneurysm treatment, including severing or cutting a desired distal coil segment while delivering the coil endovascularly.
Endovascular delivery of an endovascular instrument, including an endovascular coil, to a treatment site within a body for electrically-driven severing of the instrument segment at the treatment site.
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