removable vena cava filter with features anchor causes reduced trauma.

摘要

A removable filter (10) for capturing thrombi in a blood vessel, the filter comprising: a plurality of struts (20) having first ends attached together along a longitudinal axis (X) of the filter, each strut member body (15) extending from the first end along the longitudinal axis to an anchoring hook (26) defining an axis (S) strut being configured each strut to move along a path strap relative to the longitudinal axis between an expanded state for engaging the blood vessel and a collapsed for deployment or retrieval of the filter state, each anchoring hook angle up to about 90 degrees relative to the axis of the tie; wherein each anchoring hook (26) is integral with the body member (15) and having the same thickness and tensile strength of the body member (15); wherein the plurality of struts is a plurality of primary struts (20) and characterized in that each anchoring hook extends from the body member along its path strut to about a nip path strut, so that each hook can be removed without trauma to the vessel wall without carrying substantially no tissue thereof.