Torque alleviating intra-airway lung volume reduction compressive implant structures

摘要

A device for enhancing breathing efficiency of a patient is provided. The device may include a deployed configuration with one or more helical sections with proximal end in a stand-off proximal end configuration. The standoff proximal end configuration may reduce migration of the deployed device and may preserve implant tissue compression. Alternative configurations may include two or more helical sections with a transition section disposed between the two or more helical sections. A device may include a right-handed helical section and a left-handed helical section and the transition section comprises a switchback transition section. The switchback section may provide greater control of the device during deployment by limiting recoiling forces of a device comprising a spring material. The deployed device may compress the lung to increase a gas filling resistance of the compressed portion of the lung, and/or increase tension and elastic recoil in other portions of the lung.