Patent ID: 9724185
Date: 2017-08-08
CPC Classifications: A61F

Claim:
1. A medical tool comprising: an outer tube that is inserted into a body; a core that is inserted into the outer tube so as to be movable forward and backward; a filter member that is attached to the core at a portion of the core protruding from the outer tube, and is operable by a predetermined driving force; and a tubular containing member with an open fore end that is positioned at a fore end of the outer tube and configured to contain the filter member in a folded state when the filter member is inserted into the body, wherein by moving the outer tube backward relative to the core, the medical tool is configured to release the filter member out of the containing member in a target site in the body in an unfolded state, and by moving the outer tube forward relative to the core, the containing member is configured to approach the released filter member in the target site in the body, thereby applying the driving force on the filter member that collapses the filter member into the folded state without the filter member entering the containing member.