Hollow needle for an ophthalmic surgical instrument

US10675182B2 · kind B2 · utility

Assignee

• GEUDER AG · DE

Inventors

• Marc Wolschendorf · Schriesheim, DE
• Stefan Engel · Aachen, DE
• Dieter Frauenfeld · Heidelberg, DE
• René Draheim · Sandhausen, DE
• Volker Geuder · Heidelberg, DE

Key dates

• Filing date: Feb 2, 2016
• Grant date: Jun 9, 2020
• Expiry date: May 4, 2036

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2217/005
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A hollow needle for an ophthalmic surgical instrument for in-vivo fragmentation of organic lenses by means of ultrasound, comprising a connection region (2) formed on the proximal end (1) for coupling onto the instrument and a needle head (4) formed on the distal end (3) having an effective surface (5) for emitting ultrasound waves, wherein a suction channel (6) for suctioning lens fragments extends in the axial direction through the hollow needle, the opening (7) of which is delimited by the effective surface (5), characterized in that the suction channel in the needle head (4) is formed in a conical manner at least partially running in the direction of the proximal end (1), and in that sections (9) running over this region (1) in the axial direction are formed in the wall (10) of the suction channel.