A Non-randomized, Open-Label Study to Evaluate the Safety and Effectiveness of the Dayspring Technology for Patients With Breast Cancer Related Lymphedema (BCRL) After Lymphatic Surgery

Inclusion Criteria: * Males and females ≥ 18 years of age * Willing to sign the informed consent and deemed capable of following the study protocol * Subjects must have a diagnosis of upper extremity edema and have or will undergo lymphatic surgery with Dr. Nguyen * Subjects must have a difference in volume greater than 3% between the limbs. Exclusion Criteria: * Individuals with a history or presence of a systemic disorder or condition that could place the patient at increased risk from sequential compression therapy * Inability or unwillingness to participate in all aspects of study protocol and/or inability to provide informed consent * Patients with exam results that would prevent safe and effective use of the study device (cellulitis, open-wounds, healing-wounds, etc.) * Diagnosis of active or recurrent cancer, or less than 3 months at the time of initial evaluation from the completion of chemotherapy, radiation therapy or primary surgery for the treatment of cancer * Patients must not have any diagnosed cognitive or physical impairment that would interfere with use of the device * Diagnosis of lipedema * Diagnosis of acute infection. The source of the infection must be treated for 2 weeks prior to admittance into the study * Diagnosis of acute thrombophlebitis (in last 2 months) * Diagnosis of pulmonary embolism or deep vein thrombosis within the previous 6 months * Diagnosis of pulmonary edema * Diagnosis of congestive heart failure (uncontrolled) * Diagnosis of chronic kidney disease * Diagnosis of epilepsy * Patients with poorly controlled asthma * Women who are pregnant, planning a pregnancy or nursing at study entry * Participation in any clinical trial of an investigational substance or device during the past 30 days * Bilateral limb edema