Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Reexamination Certificate
2004-04-24
2011-12-27
Douglas, Steven (Department: 3771)
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
C128S207140, C128S207150, C604S509000, C604S516000
Reexamination Certificate
active
08082921
ABSTRACT:
Methods, systems and devices are described for temporarily or permanently evacuating stagnating air from a diseased lung area, typically for the purpose of treating COPD. Evacuation is accomplished by displacing the stagnant CO2-rich air with a readily diffusible gas using a transluminal indwelling catheter specially configured to remain anchored in the targeted area for long term treatment without supervision. Appropriate elevated positive gas pressure in the targeted area is then regulated via the catheter and a pneumatic control unit to force under positive pressure effusion of the diffusible gas out of the area into neighboring areas while inhibiting infusion of other gases thus effecting a gradual gas volume decrease and deflation of the targeted area.
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