Hoffmann & Baron, LLP
Apparatus and method for extrusion of thin-walled tubes
The present invention provides an apparatus and method for manufacturing polymeric thin-walled tubular members, which are well-suited for use as vascular grafts. The apparatus of the present invention enables extrusion of a tubular member having an extremely thin wall thickness so as to facilitate passage through tortuous vascular passageways. The apparatus achieves uniform wall thickness in a tubular member by establishing and maintaining axial alignment of a ram having a concentrically disposed guide rod therein with a die supported in concentric relation to the guide rod.
SciMed Life Systems, Inc.
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Jason P. Christopher B. David J. James Timothy S. Alice Howard
Hill Brodeur Sogard Venditti Girton Wong Wolek