| http://www.w3.org/ns/prov#value | - Yet another aspect of the present invention is a method of performing an angiographic procedure using an angiographic catheter wherein the distal end of an angiographic catheter is placed within a blood vessel of a body and a deformable elastomeric seal having a slit formed therein is provided substantially adjacent the proximal end of the catheter to selectively seal the proximal end of the cathe
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