Airway balloon dilator

Abstract

A medical apparatus for widening a stenosis in the airway of a patient which includes a central hollow core, an inflatable outer balloon, and at least one inner balloon inside the outer balloon. The apparatus also can include a flexible support member mounted on the external surface of the outer balloon with at least one microsurgical blade. The outer balloon can be dumbbell-shaped to keep the balloon in position over the stenosis when the balloon is inflated. The hollow core allows the patient to be ventilated during the procedure, the inner balloon(s) allow higher dilation pressures to be generated from inside the outer balloon, and the blade can form an effective cutting edge upon inflation of the outer balloon.

Description

FIELD OF THE INVENTION [0001] The present invention relates to medical care for the larynx, trachea or bronchi to relieve a stenosis. In particular, the invention relates to a device for performing dilation of the larynx, trachea or bronchi. BACKGROUND OF THE INVENTION [0002] Management of stenosis of the trachea and bronchi, including laryngotracheal and subglottic stenosis, is one of the most challenging problems for the head and neck surgeon. Subglottic stenosis is a congenital or acquired narrowing of the subglottic airway. In the early twentieth century subglottic stenosis was rare, and most cases occurred in adults. In the 1960's the incidence of acquired subglottic stenosis began to dramatically increase in the neonatal population, most likely the result of increased survival of low-birth-weight infants and the increased use of intubation in this population. In addition, long term intubation has become an accepted alternative to tracheotomy, leading to more and more incidence...

AI Technical Summary

Benefits of technology

[0009] The present invention provides an airway balloon dilator for use to quickly re-establish laryngeal, t

Problems solved by technology

Management of stenosis of the trachea and bronchi, including laryngotracheal and subglottic stenosis, is one of the most challenging problems for the head and neck surgeon.

In addition, long term intubation has become an accepted alternative to tracheotomy, leading to more and more incidences of tracheal stenosis.

Adults usually have a history of prior intubation with symptoms of progressive shortness of breath and noisy breathing.

That is, very small increases in the luminal diameter of the airway can lead to large increases in airflow through the lungs.

Although safe when performed by a skilled clinician, such a procedure sometimes induces unwanted trauma to the airway in the form of deep lacerations and hemoptysis.

Further, current dilation practices do not permit dilation of a tracheal stenosis that is distal to a narrowi

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