​TidalSense, formerly known as Cambridge Respiratory Innovations, is a venture-backed respiratory technology company founded in 2013 and headquartered in Cambridge, UK. The company specializes in developing AI-driven diagnostic and monitoring solutions for respiratory conditions such as Chronic Obstructive Pulmonary Disease (COPD) and asthma. Their flagship product, N-Tidal™, is a handheld device that utilizes patented sensor technology to perform high-accuracy, rapid sampling of CO₂ levels in a patient's breath. This technology enables the detection of subtle changes in lung function through relaxed breathing, facilitating early and accurate diagnosis of respiratory diseases. N-Tidal™ Diagnose, a component of this technology, has received EU MDR class 2a regulatory clearance for COPD diagnosis, offering results in as little as five minutes without the need for specialist training or forced breathing maneuvers. TidalSense aims to transform respiratory care pathways by providing innovative, efficient, and patient-friendly diagnostic solutions.