A selective aperture for a laser delivery system for providing incision, ablation and coagulation. A laser crystal disposed between two reflective surfaces forms a laser beam. An aperture member positioned between the laser crystal and one of the reflective surfaces includes a substantially circular...http://www.google.com.au/patents/US6575964?utm_source=gb-gplus-sharePatent US6575964 - Selective aperture for laser delivery system for providing incision, tissue ablation and coagulation
