Retrieval systems and methods for use thereof

A medical device for removing an obstruction from a body passage, the medical device comprising:

• at least one leading wire having a first end and a second end;
• a capturing portion having a surface extending between an open proximal end and a permeable distal end;
• where the capturing portion is formed from the at least one leading wire such that the group of wires extends through an interior of the basket and diverges to form the permeable distal end, the group of wires extend back in a proximal direction to form the capturing portion;
• and
• where the surface of the capturing portion comprises a translating surface and a capturing surface, each being configured so that a translating surface axial strength is greater than a capturing surface axial strength, wherein application of a tensile force on the at least one leading wire causes axial compression of the capturing surface before causing axial compression and deformation of the translating surface as the capturing portion engages the obstruction.