Chronic Obstructive Pulmonary Disease (COPD) is defined as an impaired ability to move air within the lungs and is a major public health problem that is projected to rank fifth worldwide in terms of disease burden and third in terms of mortality. Chronic bronchitis (CB) is a common clinical phenotype within the umbrella of a COPD diagnosis and is classically defined as chronic cough and sputum production for 3 months a year for 2 consecutive years2, but many studies have used different definitions to define it- chronic cough and sputum production for one year or cough and sputum production on most days of the week. CB is associated with multiple clinical consequences, including; the worsening of lung function decline, increasing risk of acute exacerbations of COPD, increased risk of developing pneumonia, reduced health related quality of life, and an increase in all-cause mortality.

The RejuvenAir® System is a cryosurgical device that applies medical-grade liquid nitrogen to the treatment area via a radial head catheter in a small, accurately directed spray. Cryotherapy with the RejuvenAir® System is designed to induce a regenerative endobronchial tissue effect by: 1) destroying via cryotherapy the abnormal surface epithelium that has become overgrown with mucin producing goblet cells, 2) thus allowing normal bronchial epithelium with a regrowth of ciliated epithelial cells that will facilitate the removal of mucins from the bronchial airways and 3) lead to a reduction in chronic inflammation and its accompanying mucosal swelling with resultant increase in the treated airway diameter. This reversal of inflamed epithelium may also lessen systemic inflammation.

Inclusion Criteria

• Males and females ≥40 to ≤80 years of age
• Subject is able to read, understand, and sign a written Informed Consent in order to participate in the Study
• Subject has a diagnosis of chronic bronchitis (CB) and/or chronic obstructive pulmonary disease (COPD) for a minimum of two years. (Chronic Bronchitis is defined clinically as chronic productive cough for 3 months in each of 2 successive years in a patient in whom other causes of productive cough have been excluded)
• Subject is classified as having a moderate or severe (GOLD 2/3) airflow obstruction defined by a post-bronchodilator of ≥30% FEV1 to <80% predicted with a baseline FEV1/FVC of <0.70
• Subject has a Baseline SGRQ of ≥50
• Subject demonstrates daily cough and significant mucus.
• Subject is being treated according to current medically accepted treatment guidelines for chronic bronchitis for minimum of 3 months prior to enrollment into the study. Subject agrees to continue maintenance pulmonary/COPD medications (GOLD standard medications recommended) for the duration of the study
• Non-smoking for a minimum of 2 months prior to consent and agrees to continue not smoking for the duration of the study
• Subject is able to adhere to and undergo 2 bronchoscopic procedures (cross over subjects may undergo two additional bronchoscopic procedures, if they agree to treatment), per hospital guidelines
• Subject demonstrates ability and willingness to use a daily eDiary

Exclusion Criteria

• Subject has had an acute pulmonary infection, exacerbation or pneumonia requiring medical treatment (with antibiotics and/or steroids) within 4 weeks prior of initially planned study bronchoscopy
• Current diagnosis of Asthma
• Subject has Alpha-1 antitrypsin deficiency as defined by blood level <59 mg/dL
• Subject has other origins of respiratory disease aside from chronic bronchitis and COPD
• Subject is using e-cigarettes, vaping or taking any inhaled substances not prescribed by a physician
• Subject has untreatable or life threatening arrhythmias, inability to adequately oxygenate during the bronchoscopy, or has acute respiratory failure
• Subject has bullous emphysema characterized as large bullae >30 millimeters on HRCT; or subject has stenosis in the tracheobronchial system, tracheobronchomegaly, trachea-bronchomalacia, amyloidosis or cystic fibrosis
• Subject has clinically significant bronchiectasis
• Subject has had a solid transplant procedure
• Subject has a known mucosal tear, has undergone prior lung surgery such as pneumonectomy, lobectomy, bullectomy, or lung volume reduction surgery
• Subject has had a prior lung device procedure, including emphysema stent(s) implanted, lung coils, valves, lung denervation, bronchial thermoplasty, cryotherapy or other therapies
• Subject is unable to temporarily discontinue use of anticoagulant therapy: warfarin, Coumadin, LMWH, heparin, clopidrogel (or equal)
• Subject has a serious medical condition, such as: uncontrolled coagulopathy or bleeding disorder, congestive heart failure, uncontrolled angina, myocardial infarction in the past year, renal failure, liver disease, cerebrovascular accident within the past 6 months, uncontrolled diabetes, uncontrolled hypertension or uncontrolled gastric reflux
• Subject is pregnant, nursing, or planning to get pregnant during study duration
• Subject has or is receiving chemotherapy or active radiation therapy within the past 6 months or is expected to receive chemotherapy during participation in this study
• Subject is or has been in another treatment study within 6 weeks of enrollment and agrees to not participate in any other treatment studies for the duration of study participation
• Subject has known sensitivity to medication required to perform bronchoscopy (such as lidocaine, atropine, and benzodiazepines)