IRVINE, Calif.--(BUSINESS WIRE)--Pegasus Biologics, Inc., a privately held developer of unique collagen scaffolds for soft tissue repair, announced today that its President and Founder, France Dixon Helfer, has resigned to accept a President & CEO position with a plastic surgery device start up. Helfer will retain a seat on the company’s Board of Directors and will continue to serve as an advisor. Her leadership responsibilities will be taken on by existing CEO, Michael Will.