Clover leaf inferior vena cava filter: in vitro evaluation of filter deployment and comparison of emboli-capturing ability.
A new self-centering stainless steel inferior vena cava filter (clover leaf filter) that can be delivered percutaneously through a 10-F catheter has been developed. The filter is loaded into an angiographic catheter as a set of straightened wires that are mechanically deformed into a predetermined clover leaf shape when the device is delivered. The filter can be deployed easily and effectively into the simulated vena cava. Emboli-capturing efficiency of the new filter was compared in vitro to that of the Greenfield and Bird's Nest inferior vena cava filters. All three filters captured all large 5 x 100-mm, potentially fatal emboli. The clover leaf filter captures more of the smaller (5 x 20-mm and 3 x 20-mm) emboli than the Greenfield filter and less than the Bird's Nest filter.
Palestrant
A M
AM
Department of Radiology, Good Samaritan Regional Medical Center, Phoenix, AZ 85006.
Faykus
M H
MH
D004617:Embolism; D004867:Equipment Design; D006801:Humans; D008955:Models, Cardiovascular; D008961:Models, Structural; D011655:Pulmonary Embolism / Q000517:prevention & control*; D013193:Stainless Steel; D016306:Vena Cava Filters; D014682:Vena Cava, Inferior
D013193:Stainless Steel