公开(公告)号：US20220015632A1

公开(公告)日：2022-01-20

申请号：US17297851

申请日：2019-11-20

申请人： PHOTONO OY

发明人： Antti KONTIOLA ,  Ari SALMI ,  Edward HÆGGSTRÖM ,  Daniel Veira CANLE ,  Henri MALINEN ,  Joni MÄKINEN

IPC分类号： A61B3/16 ,  A61B3/10

摘要： A system for measuring pressure of an eye includes an excitation source for producing a travelling air vortex ring and for directing the travelling air vortex ring to the eye, a detector for detecting an interaction between the travelling air vortex ring and a surface of the eye, and a processing device for determining an estimate of the pressure of the eye based on the detected interaction between the travelling air vortex ring and the surface of the eye. The travelling air vortex ring is produced by directing an air pressure pulse into a flow guide, and the air pressure pulse is generated with an electric spark or otherwise so that no swinging mass, such as a piston, is needed. This is advantageous especially in a case of a handheld device because a swinging mass would tend to adversely move the handheld device during a measurement.