Patent ID: 9278028
Filing Date: 2016-03-08
CPC Classification: A61F

Claim Text:
1. A system for cataract surgery on an eye of a patient, comprising: a. a first laser source configured to deliver a first laser beam in a pulsed form at a first pulse energy of between one-half microjoule and 50 microjoules; b. a second laser source configured to deliver a second laser beam in a pulsed form at a second pulse energy greater than the first pulse energy, the second pulse energy being between 50 microjoules and 5,000 microjoules; c. a scanning optical system, configured to: i. receive the first and second laser beams; and ii. adjust a first focus position of the first laser beam, and a second focus position of the second laser beam, in up to three dimensions to direct the first and second laser beams onto one or more targeted tissue structure portions of the eye of the patient; d. a controller operatively coupled to the scanning optical system and configured to cause the scanning optical system to scan the first focus position of the first laser beam in a first scanning pattern to photodisrupt a first tissue structure portion with a plurality of pulses of the first laser beam to form an incised surface, and, subsequent to scanning the first focus position of the first laser beam in the first scanning pattern, scan the second focus position of the second laser beam in a second scanning pattern that is co-registered to the first scanning pattern to dispose the second focal position on the incised surface for a plurality of pulses of the second laser beam to further photodisrupt the same first tissue structure portion with the second laser beam to further separate segments of the first tissue structure along the incised surface wherein the pulses of the first laser beam scanned in the first scanning pattern have a first pulse duration between 100 femtoseconds and 10 picoseconds, and the pulses of the second laser beam scanned in the second scanning pattern have a second pulse duration between 10 picoseconds and 10 nanoseconds and is longer than the first pulse duration.