The endobronchial valve is an umbrella-shaped, one way valve that is placed via a delivery catheter, introduced through the working channel of a flexible bronchoscope.
The valve consists of a Nitinol frame covered with a polymer membrane and five anchors that securely engage the airway walls at the targeted treatment location.
Once in place, the spiration valve limits airflow to damaged tissue while allowing trapped air and fluid to escape. Complete occlusion of a targeted lobe by the valves may enable significant lobar volume reduction, relieving hyperinflation and allowing the patient to breathe easier. 1,2
Features of the Spiration Valve System include:
anchors for 0% migration and expectoration; 3, 4, 5
nitinol umbrella like frame, designed to minimise contact with the bronchial wall and conform to complex airways;
no pressure fit, allowing secretions to escape naturally along the bronchial wall;
a centre rod to facilitate removal; and
compatibility with a 2.0 mm instrument channel for greater airway access.
1.Eberhardt R, Gompelmann D, Schuhmann M, et al. Complete Unilateral vs Partial Bilateral Endoscopic Lung Volume Reduction in Patients With Bilateral Lung Emphysema.
Chest 2012;142(4):900-908; doi:10.1378/chest.11-2886
2.Springmeyer S, Bolliger C, Waddell K, et al. Treatment of Heterogeneous Emphysema Using the Spiration IBV Valves. Thorac Surg Clin 2009; 19:247-53
3.Sterman. Respiration 2010;79:222-223.
4 Ninane. Eur Respir J 2012; 39:1319–1325.
5. Spiration IDE Annual Safety Report 2010