Laser apparatus utilizing marking laser for triggering operative laser
Patent 4454882 Issued on June 19, 1984. Estimated Expiration Date: 
July 19, 2002. 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.
July 19, 2002. 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 3525332 3533707 3710798 Process and apparatus for ophthalmic surgery Control for laser hemangioma treatment system Human and animal tissue photoradiation system and method Patent #: 4336809 InventorAssigneeApplicationNo. 06/399811 filed on 07/19/1982US Classes:607/89, Laser application219/121.83, With monitoring372/14, Mechanical600/108, Laser600/126, With foot pedal control for endoscope operation606/11Beam energy control or monitoringExaminersPrimary: Kamm, William E.Assistant: Shein, Mitchell J. International ClassesA61B 18/20 (20060101)A61B 17/00 (20060101) Foreign Application Priority Data1981-07-29 JPAbstractA laser apparatus includes an operating laser oscillator for generating an operating laser beam for medical treatment and a marker laser oscillator for generating a visible laser beam (i.e., marker laser beam) in order to mark a portion of the body cavity to be treated. The marker laser beam is guided coaxial with the operating laser beam to become incident on a laser probe. The marker laser beam is intermittently shielded by a chopper. The shielded marker laser beam is reflected by a reflecting surface of the chopper and is guided to a photosensor. The operating laser oscillator is driven in response to an output signal from the photosensor. | |
