US Patent 11751881 Securement wire withstanding forces during deployment of implantable intravascular treatment device using a delivery and detachment system

Delivery and detachment system for an implantable intravascular treatment device, the system including an outer delivery tube and a proximal inner tube telescopically slidable within the lumen of the outer delivery tube. The proximal inner tube has a weld window radially inward cutout defined therein along an axial section between the proximal and distal ends. A securement wire disposed axially within the lumen of the proximal inner tube is secured to an inner wall of the lumen of the proximal inner tube via at least one supplemental connection point coinciding with the weld window. Also, the method for making the delivery and detachment system wherein one or more positioning wires threaded through the lumen of the proximal inner tube are manipulated to force the securement wire and the proximal inner tube in direct physical contact with one another along an axial section coinciding with the weld window.