Vascular remodeling device

摘要

A vascular remodeling device is provided. The device has an anchor portion, sized for deployment in a blood vessel, that is radially expandable from a collapsed state to an expanded state. The device also includes a distal portion sized for deployment in a blood vessel. The distal portion is radially expandable from a collapsed state to an expanded state and has a distal face that is sufficiently occlusive in the distal-to-proximal direction to perform a therapeutic blocking function in an aneurysm neck. The device also has an intermediate portion that interconnects a distal end of the anchor portion and a proximal end of the distal portion. In some embodiments, the anchor portion and/or distal portion has a plurality of interconnected struts.

主权项

1. A vascular remodeling device, comprising:
a proximal portion radially expandable from a collapsed state to an expanded state such that, when expanded in a blood vessel, the proximal portion engages a wall of the vessel, the proximal portion having a first waist comprising a radially largest region of the proximal portion when in the expanded state; a distal portion radially expandable from a collapsed state to an expanded state, the distal portion having a longitudinal axis and a second waist comprising a radially largest region of the distal portion when in the expanded state, the distal portion having a distal face located distal to the second waist; and an intermediate portion that couples a distal end of the proximal portion and a proximal end of the distal portion, the intermediate portion comprising a radially narrowest region of the vascular remodeling device between the first and second waists of the proximal and distal portions; wherein the proximal portion comprises a plurality of interconnected proximal struts that extend distally from a proximal end of the proximal portion such that (a) proximal to the first waist, the proximal struts each (i) diverge from the longitudinal axis and (ii) divide into at least two proximal sub-struts; and (b) distal to the first waist, the proximal sub-struts each (i) merge with an adjacent proximal sub-strut, and (ii) converge toward the longitudinal axis, the proximal portion having a total number of proximal sub-struts that is at least double a total number of proximal struts; wherein the distal portion comprises, between the proximal end of the distal portion and the second waist, only a plurality of distal struts that extend distally from the proximal end of the distal portion such that (a) distal to the second waist, the distal struts each (i) diverge from the longitudinal axis and (ii) divide into at least two distal sub-struts wholly distal to the second waist; and (b) distal to the second waist, the distal sub-struts each (i) merge with an adjacent distal sub-strut, and (ii) converge toward the longitudinal axis, the distal portion having a total number of distal sub-struts that is double a total number of distal struts.