A blood filter delivery system for delivering a filter into a vein includes an introducer and a push rod with a spline member disposed along the push rod. The spline member has a main body, first and second boss portions spaced apart along the longitudinal axis to provide a gap for retaining anchor member...http://www.google.fr/patents/US8062327?utm_source=gb-gplus-shareBrevet US8062327 - Embolus blood clot filter and delivery system
