Apparatus and method for treatment of sinusitis

Abstract

A method of treating a constricted sinus passageway of a patient includes traversing the canine fossa region of the patient so as to form a passageway in the sinus cavity. A cannula is positioned in the passageway. A visualization tool such as an endoscope is passed through a lumen or channel in the cannula to aid in visualization of the anatomical site of interest. A balloon dilation catheter is then deployed through or along the cannula so as to place the balloon within or across the constricted anatomical space (e.g., ostium). The balloon is then expanded so as to expand at least a portion of the constricted anatomical space. Alternative embodiments include the use of an optional guide wire and incorporating a endoscope lumen through the balloon dilation catheter.

Description

FIELD OF THE INVENTION[0001]The field of the invention generally relates to devices and methods for the treatment or amelioration of sinusitis.BACKGROUND OF THE INVENTION[0002]Sinusitis is a condition affecting over 35 million Americans, and similarly large populations in the rest of the developed world. Sinusitis occurs when one or more of the four paired sinus cavities (i.e., maxillary, ethmoid, frontal, sphenoid) becomes obstructed. Normally the sinus cavities, each of which are lined by mucosa, produce mucous which is then moved by beating cilia from the sinus cavity out to the nasal cavity and down the throat. The combined sinuses produce approximately one liter of mucous daily, so the effective transport of this mucous is important to sinus health.[0003]Each sinus cavity has an opening into the nasal passage called an ostium. When the mucosa of one or more of the ostia or regions near the ostia become inflamed, the egress of mucous is interrupted, setting the stage for an infe...

AI Technical Summary

Benefits of technology

[0018]In yet another embodiment, an access tool for creating an artificial access passageway to a sinus cavity of the patient includes an elongate tissue penetration member including a shaft and a distal tip, and a recess disposed in the shaft proximal of the distal tip. The tool further includes a tubular sheath removably secured to the shaft in the recess, the tubular sheath including a flange portion.

[0019]In still another embodime

Problems solved by technology

While this procedure is generally effective, it is a relatively invasive procedure to the nasal cavity and sinuses.

There can be significant post-operative pain for the patient, and sometimes there are bleeding complications that require packing to be placed in the nasal cavity.

Subsequent removal of this packing can be quite painful.

Also, since the nasal and sinus tissue are significantly traumatized, it may take several days to weeks to know whether the surgery was successful.

Additionally, in certain patients, the ostial regions of the surgically-treated sinuses can become re-obstructed with excess growth of scar tissue as

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