Patent ID: 11903643
Assignee: OLYMPUS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A lithotripsy apparatus comprising:
a treatment laser beam source configured to emit a treatment laser beam for crushing a stone;
a guide light source configured to emit a guide light;
a photodetector configured to detect a return light including the guide light reflected by the stone; and
a processor comprising hardware, the processor being configured to:
calculate a distance from the treatment laser beam source to the stone on the basis of the return light;
determine whether a temporal fluctuation in the distance calculated is equal to or less than a threshold value; and
in response to determining that the temporal fluctuation in the distance calculated is equal to or less than the threshold value, control the treatment laser beam source to decrease a light quantity of the treatment laser beam.