Patent ID: 8252003
Filing Date: 2012-08-28
Classification: A61B,A61K,A61M

Abstract:
1. An instrument adapted to create a stoma into a lung of a patient the patient having a chest wall, a parietal membrane, a visceral membrane and a pleural cavity between the parietal membrane and visceral membrane, the stoma passing through the chest wall, the parietal membrane and the visceral membrane into parenchymal tissue of the lung and being sealed from the pleural cavity, wherein the instrument comprises: a flexible tube having a proximal end, a distal end and a lumen; a flange received on the flexible tube and adapted to engage the chest wall of the patient, wherein the flange may be positioned at a variable distance from the distal end of the flexible tube and selectively secured to the flexible tube; an expandable device connected to the distal end of the flexible tube wherein the expandable device has a first configuration in which it has approximately the same diameter as the flexible tube and a second configuration in which it is significantly larger in diameter than the flexible tube and wherein expansion of the expandable device from the first configuration to the second configuration is adapted to displace parenchymal tissue of the lung and securing the expandable device within the lung; a coupling attached to the proximal end of the tube; a substantially non-flexible mandrel having a proximal end and a distal end, wherein, when the mandrel is received in the lumen of the flexible tube and the proximal end of the mandrel is engaged by the coupling, the distal end of the mandrel engages the expandable device and maintains the expandable device in the first configuration; and wherein, when the mandrel is disengaged by the coupling and withdrawn from the distal end of the flexible tube, the expandable device expands from the first configuration to the second configuration thereby displacing parenchymal tissue of the lung and securing the expandable device within the lung; and a filament attached to the expandable device, wherein the filament passes through the lumen of the flexible tube to a lock at the proximal end of the flexible tube and wherein the filament may be operated to secure the expandable device in the second configuration.