Patent ID: 8257778

Claim:
A method of making a hemostatic dressing using a rotating object comprising: introducing a liquid biocompatible fiber precursor containing one or more active biological or abiological procoagulation species at the center of the rotating object such that the liquid can spin off the rotating object and form a first set of fibers; depositing fibers from the first set of fibers onto a collector positioned at a distance from the rotating object such that a layer of fibers is created and wherein an electrical potential difference is maintained between the rotating object and the collector; and introducing a liquid biocompatible fiber precursor containing one or more active biological or abiological procoagulation species different from those in step at the center of the rotating object such that the liquid can spin off the rotating object and form a second set of fibers, such that the second set of fibers is deposited over the fibers from the first set of fibers on the collector.