Vasoocclusive coil with biplex windings to improve mechanical properties

A vasoocclusive device for use in interventional therapy and vascular surgery adapted to be inserted into a portion of a vasculature, comprising:

• a vasoocclusive coil having a proximal and a distal end, said vasoocclusive coil defining a lumen between said proximal and distal ends;
• an inner reinforcement coil extending through said lumen of said vasoocclusive coil, said inner reinforcement coil having proximal and distal ends, said inner reinforcement proximal end being fixedly attached at the proximal end of said vasoocclusive coil;
• and
• said inner reinforcement coil forming a helical winding within said vasoocclusive coil.

A vasoocclusive device for use in interventional therapy and vascular surgery adapted to be inserted into a portion of a vasculature, comprising:

• a vasoocclusive coil having a proximal and a distal end, said vasoocclusive coil defining a lumen between said proximal and distal ends;
• an inner reinforcement coil being formed from at least one multi-stranded micro-cable, said multi-stranded micro-cable having a plurality of flexible strands of a resilient material, and at least one radiopaque strand to provide a radiopaque marker of the deployed configuration;
• said inner reinforcement coil extending through said lumen of said vasoocclusive coil, said inner reinforcement coil having proximal and distal ends;
• and
• said inner reinforcement coil forming a helical winding opposite the winding of said vasoocclusive coil.

A vasoocclusive device for use in interventional therapy and vascular surgery adapted to be inserted into a portion of a vasculature, comprising:

• a vasoocclusive coil having a proximal and a distal end, said vasoocclusive coil being helically wound forming a lumen between said proximal and distal ends;
• an inner reinforcement coil, said vasoocclusive coil being disposed about said inner reinforcement coil;
• and
• said inner reinforcement coil forming a helical winding opposite said vasoocclusive coil winding.