Patent ID: 7785315

Claim:
A method for treating ethmoid disease in a human or animal subject using an irrigation catheter system that comprises a sheath and an irrigation catheter, the irrigation catheter having an implantable component, a removeable component, a fixed curve and a distal tip, said method comprising the steps of: inserting the sheath into the nose; advancing the irrigation catheter through the sheath so that the distal tip of the irrigation catheter exits the sheath and enters into at least one ethmoid air cell with the curve oriented downwardly so as to deter inadvertent penetration of the skull base; delivering an irrigation fluid through the irrigation catheter and into at least one ethmoid air cell; and removing the sheath and the removeable component of the irrigation catheter, leaving the implantable component of the irrigation catheter implanted in at least one ethmoid air cell.