Search International and National Patent Collections

1. (WO2001035881) NON-CONTACT PHOTOACOUSTIC SPECTROSCOPY FOR PHOTOABLATION CONTROL

Pub. No.:    WO/2001/035881    International Application No.:    PCT/EP2000/011167
Publication Date: Sat May 26 01:59:59 CEST 2001 International Filing Date: Mon Nov 13 00:59:59 CET 2000
IPC: A61B 5/00
A61B 8/10
A61F 9/01
G01N 21/17
Applicants: BENDE, Thomas
JEAN, Benedikt
Inventors: BENDE, Thomas
JEAN, Benedikt
Title: NON-CONTACT PHOTOACOUSTIC SPECTROSCOPY FOR PHOTOABLATION CONTROL
Abstract:
A method and system for non-contact laser photoablation to be utilized during vision corrective surgery. Multiple pulses of electromagnetic energy are impinged onto target tissue to ablate and generate an acoustic pressure wave while concurrently processing signals produced by the acoustic pressure wave. A representative pattern can be provided to guide the surgeon through distinct tissue layers encountered in cornea resculpting surgery. Cluster analysis may be utilized to process the acoustic wave signals to generate the representative pattern. Specifically, the representative cluster pattern provides the surgeon with a tool to discern, with increased precision, the tissue layer being ablated and reduces the likelihood of invading a deeper layer of tissue that should not be removed.