CAS Medical Systems, Inc. is a medical technology company that develops, manufactures and markets non-invasive patient monitoring products for patient care. The Company designs, manufactures and distributes the FORE-SIGHT and FORE-SIGHT ELITE brand tissue oximeters and sensors. It also sells various legacy products called Traditional Monitoring, which includes non-invasive blood pressure measurement technologies, neonatal medical disposables and service sales. It operates through two categories of sales: Tissue Oximetry Monitoring, which includes sales of its FORE-SIGHT tissue oximeter monitors, sensors and accessories, and Traditional Monitoring, which includes sales of its legacy products comprising the original equipment manufacturer (OEM) sales of its non-invasive blood pressure technology (MAXNIBP and MAXIQ), and monitor service and repair. The FORE-SIGHT Tissue Oximeter technology provides clinicians a non-invasive, quantitative measurement of oxygenation in cerebral tissue.