A medical device for removing an occlusion from a vessel, comprising: a delivery catheter and a delivery wire ; said delivery catheter comprising an internal lumen that extends through said delivery catheter , said internal lumen of said delivery catheter adapted to receive said delivery wire therein, said delivery wire comprising a distal end region, said delivery wire disposed in said internal lumen of said delivery catheter , wherein said delivery wire further comprising a first body releasably engaged to said delivery wire at a first position on said delivery wire , said releasable engagement of said first body to said delivery wire comprising a breakable mechanical connection of said first body to said delivery wire , wherein, while engaged, said first body remains fixed on said delivery wire , said breakable mechanical connection comprising a threshold holding force, said delivery wire further comprising a second body fixed to said delivery wire at a second position on said delivery wire , said second position comprising a position proximate said distal end region of said delivery wire and, thereby distal from said first position of said first body , said first body further adapted to disengage from said delivery wire and axially move along said delivery wire in a distal direction toward said second body when said delivery catheter is axially moved in a distal direction relative to said delivery wire , said delivery catheter being configured to contact said first body and to apply a force to said first body that is greater than said threshold holding force to break said breakable mechanical connection . a delivery catheter and a delivery wire ; said delivery catheter comprising an internal lumen that extends through said delivery catheter , said internal lumen of said delivery catheter adapted to receive said delivery wire therein, said delivery wire comprising a distal end region, said delivery wire disposed in said internal lumen of said delivery catheter , wherein said delivery wire further comprising a first body releasably engaged to said delivery wire at a first position on said delivery wire , said releasable engagement of said first body to said delivery wire comprising a breakable mechanical connection of said first body to said delivery wire , wherein, while engaged, said first body remains fixed on said delivery wire , said breakable mechanical connection comprising a threshold holding force, said delivery wire further comprising a second body fixed to said delivery wire at a second position on said delivery wire , said second position comprising a position proximate said distal end region of said delivery wire and, thereby distal from said first position of said first body , said first body further adapted to disengage from said delivery wire and axially move along said delivery wire in a distal direction toward said second body when said delivery catheter is axially moved in a distal direction relative to said delivery wire , said delivery catheter being configured to contact said first body and to apply a force to said first body that is greater than said threshold holding force to break said breakable mechanical connection . <EOS>