Surgical blade
August 21, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesKnife assembly Instrument for measurement of the diameter of the anterior chamber of the eye Disposable ophthalmic instrument for performing radial keratotomy on the cornea Surgical knives for use in ophthalmic surgery Surgical knife blade and method of performing cataract surgery utilizing a surgical knife blade Surgical knife blade for making sutureless incisions in the eye and methods therefor Surgical knife blade Surgical blade Patent #: 6139559 InventorsApplicationNo. 375660 filed on 08/21/2001US Classes:606/166, Corneal cutter or guide for corneal cutter606/167Cutting, puncturing or piercingExaminersPrimary: Truong, KevinAssistant: Nguyen, Victor Attorney, Agent or FirmInternational ClassA61F 005/00AbstractA surgical blade for use in ophthalmic surgery has a multi-faceted distal end with cutting edges which meet at an angle greater than 90° and preferably 140°, resulting in a blade with a relatively large surface area. An anterior shoulder is positioned intermediate the distal and proximal ends of the blade to direct the blade to dimple down when the blade has been inserted into the cornea a sufficient distance to bring the shoulder into contact with the corneal tissue, allowing the surgeon to make a linear entry into the anterior chamber resulting in a reproducible, leak-free incision by using a straight-in hand motion. The blade is rounded at certain of its lateral edges to avoid snagging the incision when the blade is passed through the cornea. | |
