Hollow needle for an ophthalmic surgical instrument

The invention relates to 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) hav...

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Bibliographische Detailangaben
Hauptverfasser:	Frauenfeld, Dieter, Wolschendorf, Marc, Geuder, Volker, Engel, Stefan, Draheim, René
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS 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 MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	The invention relates to 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 ultrasonic waves, wherein a suction channel (6) for suctioning lens fragments extends in the axial direction through the hollow needle, the opening of which is delimited by the effective surface (5), characterised 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.