Apparatus for ophthalmologic surgical procedures using a femtosecond fiber laser

Apparatus and method to generate a stream of pulses having a pulse repetition rate of at least about 50000 pulses per second and a per-pulse length of less than one picosecond, and to scan and focus the stream to an output light pattern suitable to sculpt tissue for a surgical procedure (e.g., ophth...

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Bibliographische Detailangaben
Hauptverfasser:	Bendett, Mark, Gerlach, Mario, Mühlhoff, Dirk, Bischoff, Mark
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MACHINE TOOLS MEDICAL OR VETERINARY SCIENCE METAL-WORKING NOT OTHERWISE PROVIDED FOR ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORMING OPERATIONS PROSTHESES SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Apparatus and method to generate a stream of pulses having a pulse repetition rate of at least about 50000 pulses per second and a per-pulse length of less than one picosecond, and to scan and focus the stream to an output light pattern suitable to sculpt tissue for a surgical procedure (e.g., ophthalmologic) using at least a high number of pulses to complete the operation in a matter of a few seconds, e.g., 100000 pulses in less than ten seconds. Some embodiments create a preconditioning negative dispersion that compensates for positive dispersion in the scanning system, in some embodiments; a lenticule is cut using the laser and scanning system and is mechanically removed through a side slit formed through the cornea surface.