Hancock Jaffe Laboratories, Inc.: First U.S. Patent Allowed on Hancock Jaffe VenoValve IRVINE, CA / ACCESSWIRE / February 24, 2021 / Hancock Jaffe Laboratories, Inc. (NASDAQ:HJLI), a developer of medical devices that restore cardiac and vascular health, today announced that it has received a notice of allowance from the United States Patent and Trademark Office (USPTO) for a patent covering the company's VenoValve. The patent, which focuses on novel aspects of the VenoValve frame, will be the first to issue among several VenoValve patent applications pending in the U.S. and throughout the world. The VenoValve is a clinical stage device that is being developed to treat a debilitating condition known as chronic venous insufficiency (CVI) of the deep venous system. CVI occurs when valves inside the veins of the leg fail, causing blood to flow in the wrong direction (reflux), and increasing venous pressure (venous hypertension). This results in leg swelling, pain, open sores (venous ulcers) and reduced mobility for patients. CVI can make everyday tasks such as bathing, sleeping and walking extremely difficult for patients. The current standard of care for deep venous CVI sufferers includes compression garments and leg elevation, both of which are ineffective.