Methods, systems and devices for improving ventilation in a lung area
First Claim
1. A method for directly ventilating a compartment of a lung via a continuously indwelling catheter placed in the bronchial tree, wherein said catheter has a distal end and a proximal end, wherein said distal end is anchored in the bronchus of said lung compartment, and wherein said proximal end is connected to an ventilation source external to the patient, and wherein said catheter can remain in place for extended periods without clinician vigilance and wherein said ventilation source includes a gas removal means and a gas delivery means and wherein said ventilating includes gas delivery and gas removal.
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Accused Products
Abstract
Methods, systems and devices are described for new modes of ventilation in which specific lung areas are ventilated with an indwelling trans-tracheobronchial catheter for the purpose of improving ventilation and reducing hyperinflation in that specific lung area, and for redistributing inspired air to other healthier lung areas, for treating respiratory disorders such as COPD, ARDS, SARS, CF, and TB. Trans-Tracheobronchial Segmental Ventilation (TTSV) is performed on either a naturally breathing or a mechanical ventilated patient by placing a uniquely configured indwelling catheter into a bronchus of a poorly ventilated specific lung area and providing direct ventilation to that area. The catheter can be left in place for extended periods without clinician attendance or vigilance. Ventilation includes delivery of respiratory gases, therapuetic gases or agents and evacuation of stagnant gases, mixed gases or waste fluids. Typically the catheter'"'"'s distal tip is anchored without occluding the bronchus but optionally may intermittently or continuously occlude the bronchus. TTSV is optionally performed by insufflation only of the area, or by application of vacuum to the area, can include elevating or reducing the pressure in the targeted area to facilitate stagnant gas removal, or can include blocking the area to divert inspired gas to better functioning areas.
278 Citations
54 Claims
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1. A method for directly ventilating a compartment of a lung via a continuously indwelling catheter placed in the bronchial tree, wherein said catheter has a distal end and a proximal end, wherein said distal end is anchored in the bronchus of said lung compartment, and wherein said proximal end is connected to an ventilation source external to the patient, and wherein said catheter can remain in place for extended periods without clinician vigilance and wherein said ventilation source includes a gas removal means and a gas delivery means and wherein said ventilating includes gas delivery and gas removal.
- 2. A method for directly ventilating a compartment of a lung via a continuously indwelling catheter placed in the bronchial tree, wherein said catheter has a distal end and a proximal end, wherein said distal end is anchored in the bronchus of said lung compartment, and wherein said proximal end is connected to an ventilation source external to the patient, and wherein said catheter can remain in place for extended periods without vigilance.
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30. A method for directly aspirating an area of a lung via a continuously indwelling catheter placed in the bronchial tree, wherein said catheter has a distal end and a proximal end, wherein said distal end is anchored in the bronchus of said lung area, and wherein said proximal end is connected to an vacuum source external to the patient, and wherein said catheter can remain in place for extended periods without vigilance.
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31. A method as in claim 31 wherein said aspiration comprises a positive pressure venturi gas jet at the distal end of said catheter wherein said jet is directed in the proximal direction away from targeted said lung area.
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32. A method for blocking airflow into a compartment of a lung with an occlusion means, said occlusion means comprising a continuously indwelling catheter with an occlusion member at said catheter'"'"'s distal end, wherein the proximal end of said catheter remains external to the patient and wherein said catheter can remain in place for extended periods without vigilance.
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33. A method as in claim 33 wherein said catheter includes a lumen and wherein a vacuum is delivered to said lung compartment via said lumen, wherein said vacuum is delivered continuously, intermittently or variably.
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34. An apparatus and kit for the purpose of directly ventilating a lung area, comprising:
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a. A catheter with a distal and proximal end with at least one lumen for fluid flow, comprising;
i. at its distal end an anchoring means to anchor said distal end of said catheter in a bronchial lumen for extend periods while the catheter is unattended by a clinician;
ii. comprising at its proximal end a connection means for connection to a ventilation control source external to the patient;
iii. comprising between said distal and proximal ends a securing means concentric with the shaft of said catheter for sealing, tensioning and connecting said catheter shaft to the entry point of said catheter into the body;
b. A ventilation Gas Control Unit comprising;
i. an integral compressed supply of ventilation gas, or an input connection to an external ventilation gas supply, and comprising an output connection means for connection of said catheter'"'"'s proximal end and comprising a coupling means to couple said gas with said catheter'"'"'s fluid lumen, and comprising pressure or flow measurement and regulation means, such as but not limited to amplitude regulating valves, on-off valves, pumps, switches and sensors, to produce and regulate a desired output of said ventilation gas;
ii. an integral vacuum supply means, or an input connection to an external vacuum supply, and comprising a connection means for connection of said catheter'"'"'s proximal end and comprising a coupling means to couple said vacuum with said catheter'"'"'s fluid lumen, and further comprising a pressure or flow measurement and regulation means such as but not limited to amplitude regulating valves, on-off valves, pumps, switches and sensors, to produce and regulate a desired output of said vacuum;
iii. a user interface for selection of the desired output and ventilation parameters and for displaying selected, measured and regulated input and output parameters;
- View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification