Distal protection device

A vascular filter apparatus comprising:

• a core wire having proximal and distal ends;
• a filter arranged around the core wire and having:
• proximal and distal ends coupled to the core wire adjacent the core wire distal end;
• a dense braid from end-to-end, forming fine pores;
• a deployed configuration and a collapsed configuration, the deployed configuration having:
• a cylindrical central well;
• a distal cone extending from the central well to the filter distal end and comprising an acute included angle;
• a proximal cone extending from the central well to the filter proximal end and comprising an obtuse included angle, the proximal cone including a plurality of inlet openings that are substantially larger than the fine pores;
• and
• a rounded shoulder formed between the central well and the proximal cone.

A vascular filter apparatus comprising:

• a core wire having proximal and distal ends;
• a filter arranged around the core wire, the filter having a proximal end, a distal end, a deployed configuration and a collapsed configuration, the deployed configuration having a distal cone, a proximal cone, and a length, the proximal end of the filter being attached to the core wire;
• and
• a tubular slider being sliding disposed around the core wire, the filter distal end being secured about the slider and, the slider extending proximally from the filter distal end through the deployed length of the filter to a location adjacent the filter proximal end.

A vascular filter apparatus comprising:

• a core wire having proximal and distal ends;
• a filter arranged around the core wire, the filter having proximal and distal ends, the distal end of the filter having a slidable attachment to the core wire adjacent its distal end;
• and
• a helical member having proximal and distal ends that are secured to the core wire received there through, the proximal end of the filter being secured to the helical member between the proximal and distal ends thereof such that the core wire is capable of limited rotation with respect to the filter.