# US 2016/0249796 A1 · Treatment method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0249796 A1 - Document ID: US20160249796A1 - Status: Published application - Kind: A1 - Application number: 14/634,168 - Filed: 2015-02-27 - Published: 2016-09-01 - Earliest claimed: 2015-02-27 - Assignees: Olympus Corporation - Applicants: Olympus Corporation - Inventors: Ken FUJISAKI - Web page: https://patentgrep.com/patent/US20160249796A1 ## CPC - A61B 1/233: for the nose, i.e. nasoscopes {, e.g. testing of patency of Eustachian tubes} - A61B 1/00154: {using guiding arrangements for insertion} - A61B 17/24: for use in the oral cavity, larynx, bronchial passages or nose (for medical inspection of cavities or tubes in the body A61B1/00); Tongue scrapers - A61B 90/37: {Surgical systems with images on a monitor during operation} - A61M 1/84: {Drainage tubes; Aspiration tips (for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32)} - A61B 10/06: Biopsy forceps {, e.g. with cup-shaped jaws} - A61B 17/3201: Scissors (for biopsy A61B10/02) - A61B 2017/00336: {with a protective sleeve, e.g. retractable or slidable} - A61B 2017/0034: {adapted to be inserted through a working channel of an endoscope} - A61B 2217/005: with suction drainage system - A61B 2217/007: with irrigation system - A61M 2210/0681: Sinus (maxillaris) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A treatment method includes: inserting a treatment member into a maxillary sinus through a first opening in a nasal cavity leading to the maxillary sinus; inserting an endoscope into the maxillary sinus through a second opening leading to the maxillary sinus and different from the first opening; and performing a treatment on a treatment target site in the maxillary sinus while the treatment member and the treatment target site exist within a visual field of the endoscope. ## Claims ### Claim 1 A treatment method comprising: inserting a treatment member into a maxillary sinus through a first opening in a nasal cavity leading to the maxillary sinus; inserting an endoscope into the maxillary sinus through a second opening leading to the maxillary sinus and different from the first opening; and performing a treatment on a treatment target site in the maxillary sinus while the treatment member and the treatment target site exist within a visual field of the endoscope. ### Claim 2 (depends on 1) The treatment method according to claim 1, wherein the treatment member is a sheath configured to be inserted into the maxillary sinus through the first opening, and the treatment is performed on the treatment target site after the sheath is inserted into the maxillary sinus. ### Claim 3 (depends on 1) The treatment method according to claim 1, wherein the inserting of the endoscope into the maxillary sinus includes: inserting a sheath into the maxillary sinus through the second opening; inserting the endoscope into the sheath; and making the endoscope protrude from a distal end of the sheath. ### Claim 4 (depends on 1) The treatment method according to claim 1, wherein the treatment member and the endoscope are inserted into the maxillary sinus through the first and second openings, respectively, while imaging is performed by the endoscope. ### Claim 5 (depends on 1) The treatment method according to claim 1, wherein the treatment member and the endoscope are inserted into the maxillary sinus through the first and second openings, respectively, under observation with a second endoscope different from the endoscope. ### Claim 6 (depends on 1) The treatment method according to claim 1, wherein the treatment member includes a sheath configured to be inserted into the maxillary sinus through the first opening and a treatment tool configured to be inserted into the sheath, the treatment tool is inserted into the sheath, and the treatment is performed on the treatment target site with the inserted treatment tool. ### Claim 7 (depends on 1) The treatment method according to claim 1, wherein an auxiliary insertion tool for holding the treatment member is brought close to an opening, and the treatment member is inserted into the maxillary sinus. ### Claim 8 (depends on 1) The treatment method according to claim 1, wherein an auxiliary insertion tool for holding the endoscope is brought close to an opening, and the endoscope is inserted into the maxillary sinus. ### Claim 9 (depends on 1) The treatment method according to claim 1, wherein the treatment member is inserted into the maxillary sinus through the first opening after the first opening is formed. ### Claim 10 (depends on 1) The treatment method according to claim 1, wherein the endoscope is inserted into the maxillary sinus through the second opening after the second opening is formed.