US 11,890,232 B2
Method for controlling an eye surgical laser and treatment device
Samuel Arba Mosquera, Aschaffenburg (DE); Shwetabh Verma, Aschaffenburg (DE); Nico Triefenbach, Mainaschaff (DE); and Mario Shraiki, Ober-Ramstadt (DE)
Assigned to SCHWIND EYE-TECH-SOLUTIONS GMBH, Kleinostheim (DE)
Filed by SCHWIND eye-tech-solutions GmbH, Kleinostheim (DE)
Filed on Apr. 30, 2021, as Appl. No. 17/245,994.
Claims priority of application No. 10 2020 112 583.6 (DE), filed on May 8, 2020.
Prior Publication US 2021/0346198 A1, Nov. 11, 2021
Int. Cl. A61F 9/008 (2006.01); A61D 1/00 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61F 9/0084 (2013.01) [A61F 9/00827 (2013.01); A61B 2017/0019 (2013.01); A61B 2018/00761 (2013.01); A61D 1/00 (2013.01); A61F 2009/00872 (2013.01); A61F 2009/00882 (2013.01); A61F 2009/00897 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for controlling an eye surgical laser of a treatment device for separation of a volume body with a predefined posterior interface and a predefined anterior interface from a human or animal cornea, comprising:
controlling the laser by means of a control device of the treatment device such that the laser emits pulsed laser pulses in a shot sequence in a predefined pattern into the cornea,
wherein the posterior and anterior interfaces of the volume body to be separated are defined by the predefined pattern, and the posterior and anterior interfaces are generated by means of an interaction between each of the laser pulses with the cornea due to a plurality of cavitation bubbles being generated by photodisruption,
wherein the plurality of cavitation bubbles is generated along a cavitation bubble path having an outer cavitation bubble path section and an inner cavitation bubble path section, and
wherein at least a partial area of the outer cavitation bubble path section of an outer edge area, as radially viewed, of the volume body to be separated is generated with a higher cavitation bubble density than the inner cavitation bubble path section.