Method and apparatus for capturing objects beyond an operative site in medical procedures

摘要

A device for capturing and removing particles from a body canal or vessel includes a sack having a mouth and a closed bottom. A guide wire received through the sack mouth is connected to the closed sack bottom. A collapsible frame biases the sack mouth opened around guide wire. A containment collar slidably receives guide wire, collapsible frame, and at least part of sack therein. A pull wire is connected to the containment collar. In response to relative movement between guide wire and pull wire, collapsible frame moves from inside the containment collar where the sack mouth is closed and outside the containment collar where mouth of sack is biased open by collapsible flame.