Surgical fluid flow system
Patent 4369785 Issued on January 25, 1983. Estimated Expiration Date: 
February 21, 2000. 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.
February 21, 2000. 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 3812855 Control apparatus for microsurgical instruments Device and method for applying precise irrigation, aspiration, medication, ultrasonic power and dwell time to biotissue for surgery and treatment Patent #: 4180074 InventorsAssigneeApplicationNo. 06/123487 filed on 02/21/1980US Classes:604/119, Means varying or regulating suction604/123, From pump injection device604/35With aspirating or vacuum removing meansExaminersPrimary: Michell, Robert W.Assistant: Kruter, J. L. Attorney, Agent or FirmInternational ClassesA61F 9/007 (20060101)A61M 1/00 (20060101) AbstractIrrigation-aspiration fluid flow systems, including the electronic controls therefor, are disclosed for use with surgical removal of a cataracted lens of an eye of a human or animal. Irrigation flow is provided by gravitational forces and is primarily controlled thereby. Aspiration flow is accomplished by a vacuum pump in conjunction with high and low pressure relief valves. The system provides for purging of air from the irrigation and aspiration flow lines prior to surgery. Flashing pilot lights and on-off pilot lights indicate the readiness of the system for use during surgery and assures that the proper mode of operation will be achieved upon activation of a foot switch controlled by the operating surgeon. | |
