Removable vena cava filter with anchoring feature for reduced trauma

Abstract From the Canadian patent

The present invention involves a removable filter for capturing thrombi in a blood vessel. The filter comprises a plurality of struts having first ends , attached together along a longitudinal axis (X) of the filter. Each strut has a , body member extending from the first end along the longitudinal axis to an anchoring hook defining a strut axis (S). Each strut is configured to move along a strut path (P) relative to the longitudinal axis between an expanded state for engaging with the blood vessel and a collapsed state for filter delivery or retrieval. Each anchoring hook has an angle of up to about 90 degrees relative to the strut axis.