To evaluate the Koya wearable device - a Novel Portable Non-Pneumatic Active Compression Device (NPCD) in contrast to an advanced pneumatic compression device (APCD)

A Multi-center Randomized Control Single Cross-over Study to Evaluate the Safety and Effectiveness of Dayspring, a Novel Portable Non-Pneumatic Active Compression Device (NPCD) vs. an Advanced Pneumatic Compression Device (APCD) for Treating Lower Extremity Lymphedema. To evaluate the Dayspring, a Novel Portable Non-Pneumatic Active Compression Device (NPCD) in contrast to an advanced pneumatic compression device (APCD) in a multi-centered setting to evaluate volume, quality of life, safety, adherence, and preference.

Inclusion Criteria:

• Males and females ≥ 18 years of age
• Capable and willing to sign the informed consent and deemed capable of following the study protocol
• Subjects must have a diagnosis of primary or secondary unilateral or bilateral lower extremity edema or lower extremity phlebolymphedema from chronic venous insufficiency

Exclusion Criteria:

• Individuals with a history or presence of a systemic disorder or condition that could place the subject 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
• Subjects with exam results that would prevent safe and effective use of the study device (cellulitis, open-wounds, healing-wounds, etc.)
• Subjects must not have any diagnosed cognitive or physical impairment that would interfere with use of the device
• Individuals who present with Ankle-brachial Index (ABI) screening score < 0.8 and > 1.30, indicating the possibility of Peripheral Arterial disease (PAD)
• Diagnosis of lipedema
• Diagnosis of active or recurrent cancer (< 3 months since completion of chemotherapy, radiation therapy or primary surgery for the cancer)
• Diagnosis of acute infection (in the last four weeks)
• Diagnosis of acute thrombophlebitis (in last 6 months)
• Diagnosis of pulmonary embolism or deep vein thrombosis within the previous 6 months
• Diagnosis of pulmonary edema
• Diagnosis of congestive heart failure (uncontrolled/uncompensated)
• Diagnosis of chronic kidney disease with acute renal failure
• Diagnosis of epilepsy
• Subjects with poorly controlled asthma
• Any condition where increased venous and lymphatic return is undesirable
• 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