Methods and systems for endobronchial diagnosis
First Claim
1. A method of diagnosing an air leak in a lung compartment of a patient, the method comprising:
- advancing a diagnostic catheter into an airway leading to the lung compartment;
inflating an occluding member on the catheter to form a seal with a wall of the airway and thus isolate the lung compartment;
measuring air pressure within the lung compartment during multiple breaths, using the diagnostic catheter;
measuring air flow out of the lung compartment during the multiple breaths, using the catheter;
displaying the measured air pressure as an air pressure value and displaying the measured air flow as an air flow value on a console coupled with the diagnostic catheter; and
determining whether an air leak is present in the lung compartment based on the displayed air pressure value during the multiple breaths by correlating a negative base-line value to the presence of the air leak and by determining a ratio of inspiratory to expiratory flow; and
correlating said negative base-line value and the ratio with a size of the air leak.
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Accused Products
Abstract
A method of diagnosing an air leak in a lung compartment of a patient may include: advancing a diagnostic catheter into an airway leading to the lung compartment; inflating an occluding member on the catheter to form a seal with a wall of the airway and thus isolate the lung compartment; measuring air pressure within the lung compartment during multiple breaths, using the diagnostic catheter; displaying the measured air pressure as an air pressure value on a console coupled with the diagnostic catheter; and determining whether an air leak is present in the lung compartment based on the displayed air pressure value during the multiple breaths.
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Citations
7 Claims
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1. A method of diagnosing an air leak in a lung compartment of a patient, the method comprising:
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advancing a diagnostic catheter into an airway leading to the lung compartment; inflating an occluding member on the catheter to form a seal with a wall of the airway and thus isolate the lung compartment; measuring air pressure within the lung compartment during multiple breaths, using the diagnostic catheter; measuring air flow out of the lung compartment during the multiple breaths, using the catheter; displaying the measured air pressure as an air pressure value and displaying the measured air flow as an air flow value on a console coupled with the diagnostic catheter; and determining whether an air leak is present in the lung compartment based on the displayed air pressure value during the multiple breaths by correlating a negative base-line value to the presence of the air leak and by determining a ratio of inspiratory to expiratory flow; and correlating said negative base-line value and the ratio with a size of the air leak. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification