Gas purging, eye fixation hand piece
September 15, 2009. 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 References 3747216 Contact lens corneal cutter Contra angle handpiece for dental treatment by laser beams Hand supported surgical instrument Laser canaliculostomy eye-treatment Ophthalmologic surgical instrument Apparatus for ophthalmological surgery Device for transplanting the cornea of the human eye Trephine and method Corneal vacuum trephine system InventorAssigneeApplicationNo. 407566 filed on 09/15/1989US Classes:606/166, Corneal cutter or guide for corneal cutter604/294Means for treating eye or surface of ocular cavityExaminersPrimary: Rosenbaum, C. FredAssistant: Lewis, William Attorney, Agent or FirmInternational ClassA61F 009/00AbstractA gas purging, eye fixation hand piece (10) includes a vacuum ring (15) evacuated by a suction line (21) through a handle (20) via which a purging gas is delivered to an array of purging nozzles (36-38) aimed into the vacuum ring from around an inner perimeter of the vacuum ring to direct purging gas jets towards the proximal side (16) of vacuum ring (15) attached to an eye that is held steady in a reference position for laser surgery. A preferably disposable and resilieint eye-engaging ring (25) is removably mounted on the vacuum ring to engage the eye around the cornea, and a spring-biased suction release valve (24) is preferably mounted on hand piece handle (20) for finger operation by the surgeon to release hand piece (10) from the eye when surgery is completed. Mounting of gas purging nozzles (36-38) on the hand piece automatically positions them properly for keeping the cornea clear of particles formed by laser ablation of eye tissue, once hand piece (10) is properly fixed to the eye.Other References
Field of SearchSystemsApplicators With optical fiber With optical fiber Corneal cutter or guide for corneal cutter Optic, otic or oral scrapper or abrader Combined cutting-coagulation Cutting Coagulation Infrared, visible light, ultraviolet, X-ray or electrical energy applied to body (e.g., iontophoresis, etc.) With means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue Gas application Means for treating eye or surface of ocular cavity Having intra-oral dispensing means Endodontic Having suction orifice Vacuum-type holding means | |
