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

A device for capturing and removing one or more particles, the device comprising:

• a sack;
• a guide wire;
• a collapsible frame connected between the guide wire and the sack, the collapsible frame biasing the sack open around the guide wire;
• a containment collar which slidably receives the guide wire therein;
• and
• a pull wire connected to the containment collar, wherein, in response to relative movement between the guide wire and the pull wire, the collapsible frame moves from inside the containment collar where the sack is closed and outside the containment collar where the sack is biased open by the collapsible frame.

A method for capturing and removing particles from a vessel, the method comprising the steps of:

• (a) providing a guide wire having connected at or adjacent its distal end a collapsible filter, a containment collar received on the guide wire with at least a part of the collapsible filter received inside the containment collar in a collapsed state, and a pull wire connected at or adjacent its distal end to the containment collar;
• (b) introducing the containment collar with at least the part of the collapsible filter received therein into a body canal or vessel via an access opening;
• (c) positioning the containment collar at a desired location in the body canal or vessel, with the guide wire and the pull wire extending from at or adjacent the desired location through the access opening;
• and
• (d) moving the pull wire relative to the guide wire whereby the containment collar moves relative to the guide wire in a direction opposite the distal end of the guide wire and the part of the collapsible filter expands to a deployed state.