Devices, systems and methods for treating disorders of the ear, nose and throat
Sinusitis, mucocysts, tumors, infections, hearing disorders, choanal atresia, fractures and other disorders of the paranasal sinuses, Eustachian tubes, Lachrymal ducts and other ear, nose, throat and mouth structures are diagnosed and/or treated using minimally invasive approaches and, in many cases, flexible catheters as opposed to instruments having rigid shafts. Various diagnostic procedures and devices are used to perform imaging studies, mucus flow studies, air/gas flow studies, anatomic dimension studies and endoscopic studies. Access and occluding devices may be used to facilitate insertion of working devices such asendoscopes, wires, probes, needles, catheters, balloon catheters, dilation catheters, dilators, balloons, tissue cutting or remodeling devices, suction or irrigation devices, imaging devices, sizing devices, biopsy devices, image-guided devices containing sensors or transmitters, electrosurgical devices, energy emitting devices, devices for injecting diagnostic or therapeutic agents, devices for implanting devices such as stents, substance eluting or delivering devices and implants, etc.
1. A method for removing a tissue sample from a paranasal sinus in a head of a human or animal subject using an over-the-wire biopsy device, the method comprising:
advancing an elongate, at least partially flexible biopsy device over a guidewire through an opening into a paranasal sinus to position specimen capturing jaws located at or near a distal end of the biopsy device within the paranasal sinus;
closing specimen capturing jaws about the guidewire;
advancing the closed specimen capturing jaws over the guidewire;
cutting tissue from within the paranasal sinus using the specimen capturing jaws; and
removing the biopsy device from the paranasal sinus to remove cut tissue.
2. A method as in claim 1 , wherein advancing the biopsy device comprises advancing it through a nostril of the head and then through the opening into the paranasal sinus.
3. A method as in claim 2 , wherein advancing the biopsy device comprises advancing it through a curved tubular guide disposed in the nostril.
4. A method as in claim 2 , wherein cutting and removing the tissue comprises cutting and removing mucosal tissue from a mucosal wall of the paranasal sinus.
5. A method for removing a tissue sample from a nasal cavity in a head of a human or animal subject using an over-the-wire biopsy device, the method comprising:
advancing an elongate biopsy device over a guidewire into the nasal cavity to position specimen capturing jaws located at or near a distal end of the biopsy device at a location for removing tissue from the nasal cavity;
closing specimen capturing jaws about the guidewire;
advancing the closed specimen capturing jaws over the guidewire;
cutting tissue from within the nasal cavity using the specimen capturing jaws; and
removing the biopsy device from the nasal cavity to remove the cut tissue.
6. A method as in claim 5 , wherein cutting and removing the tissue comprises cutting and removing mucosal tissue from a mucosal wall of the nasal cavity.
7. A method as in claim 5 , wherein cutting and removing the tissue comprises cutting and removing at least a portion of a polyp from the nasal cavity.