Pulmonary Sealing Sciences

Pulmonary Sealing Sciences (PSS) was a medical technology company focused on developing innovative treatments for advanced lung disease. The company's flagship product, the AeriSeal System, is a polymeric foam sealant designed for lung volume reduction in patients with severe emphysema. By sealing off diseased areas of the lung, the technology aims to reduce hyperinflation and improve respiratory function, particularly in patients with collateral ventilation who are ineligible for traditional valve therapies. The company was acquired by Pulmonx Corporation in 2019, which integrated the AeriSeal technology into its portfolio of interventional pulmonology solutions.