Methods and devices for obstructing and aspirating lung tissue segments
First Claim
1. A method for lung volume reduction, said method comprising:
- deploying an obstructive device in a lung passageway to a lung tissue segment;
passing an access tube through the obstructive device;
aspirating the segment through the access tube through the deployed obstructive device to at least partially collapse the lung segment, wherein the obstructive device is left in place as an implant after aspiration is complete, wherein the aspirating comprises coupling an aspiration catheter to the access tube and aspirating gas through the catheter from the lung segment.
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Abstract
The present invention provides improved methods, systems, devices and kits for performing lung volume reduction in patients suffering from chronic obstructive pulmonary disease or other conditions where isolation of a lung segment or reduction of lung volume is desired. The methods are minimally invasive with instruments being introduced through the mouth (endotracheally) and rely on isolating the target lung tissue segment from other regions of the lung. Isolation is achieved by deploying an obstructive device in a lung passageway leading to the target lung tissue segment. Once the obstructive device is anchored in place, the segment can be aspirated through the device. This may be achieved by a number of methods, including coupling an aspiration catheter to an inlet port on the obstruction device and aspirating through the port. Or, providing the port with a valve which allows outflow of gas from the isolated lung tissue segment during expiration of the respiratory cycle but prevents inflow of air during inspiration. In addition, a number of other methods may be used. The obstructive device may remain as an implant, to maintain isolation and optionally allow subsequent aspiration, or the device may be removed at any time.
244 Citations
16 Claims
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1. A method for lung volume reduction, said method comprising:
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deploying an obstructive device in a lung passageway to a lung tissue segment; passing an access tube through the obstructive device; aspirating the segment through the access tube through the deployed obstructive device to at least partially collapse the lung segment, wherein the obstructive device is left in place as an implant after aspiration is complete, wherein the aspirating comprises coupling an aspiration catheter to the access tube and aspirating gas through the catheter from the lung segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification