Founded by three Dartmouth professors and located in the Dartmouth Regional Technology Center, CairnSurgical, Inc. is a pre-revenue, clinical stage company developing technology designed to eliminate inadequate margins for women undergoing breast tumor resection: a new image-guided intervention device - BSL - the Breat cancer Locator in Breast Conserving Surgery. Enabling precise navgigation, the effort is to eliminate wire localization - a moderately effective but somewhat costly insert procedure that it also inconvenient for the patient while also reducing postive margin rates. CairnSurgical has developed the Breast Cancer Locator (BCL), a proprietary patient-specific 3-D printed guide designed to enable precise tumor excision. The system provides surgeons with patient-specific information regarding tumor size, shape, and clear margin boundary to help surgeons completely excise the cancer and preserve normal breast tissue -- dramatically reducing the likelihood of re-excision surgery. CairnSurgical provides a wrap-around service for the surgeon and patient with the BCL. The Company receives MRI data, analyzes it to define tumor geometry and location, and uses the data to fabricate the BCL. Clinical trials (utilizing both single arm study and randomized format) have validated key aspects of the BCL technology; additional studies are underway and planned as the company prepares to file for FDA clearance. The Company has filed multiple patents in the US, Europe, and selected countries utilizing a broad multi-modality approach.