Bipolar devices for modification of airways by transfer of energy

Abstract

This relates to a device for treating lung disease, and more particularly, relates to a device for exchanging energy with airway tissue such as that found in the airways of human lungs. The exchange of energy with this airway tissue in the airways reduces the ability of the airways to constrict and / or reduces the resistance within the airway to the flow of air through the airway.

Description

[0001]This is a Continuation-in-part application of U.S. application Ser. No. 09 / 296,040 filed Apr. 21, 1999, and of Continuation-in-part U.S. application Ser. No. 09 / 095,323 filed Jun. 10, 1998 both of which applications are incorporated herein by reference in their entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to a device for treating lung disease, and more particularly, the invention relates to a device for transferring energy into airway tissue such as that found in the airways of human lungs. This includes heating and applying RF energy to the airway. In the airways of the lung, the transfer of energy into the airway tissue stiffens that tissue or reduces the ability of the airways to constrict. In general the treatment reduces the resistance to the flow of air through the airway.[0004]2. Brief Description of the Related Art[0005]Asthma is a disease in which (i) bronchoconstriction, (ii) excessive mucus production, and (iii) infl...

AI Technical Summary

Benefits of technology

The device effectively reduces airway responsiveness and resistance, providing long-term relief from asthma symptoms by altering the airway structure and function, potentially offering a more permanent solution than traditional bronchodilators and anti-inflammatory drugs.

Problems solved by technology

Asthma is a disease in which (i) bronchoconstriction, (ii) excessive mucus production, and (iii) inflammation and swelling of airways occur, causing widespread but variable airflow obstruction thereby making it difficult for the asthma sufferer to breathe.

The chronic nature of asthma can also lead to remodeling of the airway wall (i.e., structural changes such as thickening or edema) which can further affect the function of the airway wall and influence airway hyperresponsiveness.

It may, however, be impractical and not always helpful to avoid all potential stimuli.

High doses of corticosteroid anti-inflammatory drugs can have serious side effects that require careful management.

Patient compliance with pharmacologic management and stimulus avoidance is often a barrier to successful asthma management.

Current management techniques are neither completely successful nor free from side effects.

In addition to the airways of the lungs, other body conduits such as the esophagus, ureter, urethra, and coronary arteries, are also subject to periodic spasms that interfere with their normal function.

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