Method for minimally invasive, cell-selective laser therapy on the eye

US11660231B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Manfred Dick · Gefell, DE
• Gerald Kunath-Fandrei · Jena, DE
• René Denner · Eckartsberga, DE
• Thomas Wurlitzer · Leipzig, DE

Key dates

• Filing date: Mar 16, 2021
• Grant date: May 30, 2023
• Expiry date: Jul 29, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00897
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for a minimally invasive, cell-selective laser therapy on the eye. The method, based on a short-pulse laser system, allows for different selective types of therapy on the eye. The method is based on a frequency-doubled, continuously working solid-state laser including a pump source and a control unit. The control unit regulates the pump source such that the solid-state laser emits individual pulses with pulse lengths ranging from 50 ns to continuous, wherein pulse lengths ranging from 50 ns to 50 μs are provided for selective therapies and pulse lengths ranging from 50 μs to continuous are provided for coagulative or stimulating therapies, in particular in the range from 1 ms to 500 ms. The proposed method enables a selective treatment of melanin-containing cells in the different areas of the eye via the targeted control of the pump source.