Process and apparatus for ophthalmic surgery
Control for laser hemangioma treatment system
Human and animal tissue photoradiation system and method Patent #: 4336809
ApplicationNo. 06/399811 filed on 07/19/1982
US 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 monitoring
ExaminersPrimary: Kamm, William E.
Assistant: Shein, Mitchell J.
International ClassesA61B 18/20 (20060101)
A61B 17/00 (20060101)
Foreign Application Priority Data1981-07-29 JP
AbstractA 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.