According to a recent article published in The Journal, retired Navy Capt. Mark Johnston has invented a new medical device that may lead to additional treatment options for patients, especially those who suffer from cancer.

Johnston’s device, the CryoSpray Ablation System, uses liquid nitrogen to freeze and effectively kill cancerous and pre-cancerous cells in the esophagus; a process also known as cyrotherapy.

Research was conducted at the National Naval Medical Center in Bethesda, and the device has been approved by the FDA. Medical facilities including the Mayo Clinic, New York University, Cedars Sinai, and the University of Texas MD Anderson Cancer Center, currently offer Johnston’s cyrotherapy device as an alternative treatment option.

For more details, read the full story here.