| abstract |
A filter formed from a tube is described herein. The filter may be formed from one or more tubes. The filter may include first and second filter members formed respectively from first and second tubes with the second filter member having a proximal end nested within the proximal end of the first filter member. The filter may include appendages including a tip section that terminates in a point. The proximal end of the filter may be defined by an opening configured to prevent relatively large emboli from passage through the filter. |