Surgical instrument for crushing crystalline eye lenses by means

Details Surgical instrument for crushing crystalline eye lenses by means Surgical instrument for crushing crystalline eye lenses by means

1997-06-13

1999-03-09

Buiz, Michael

Surgery

Instruments

Means for removing, inserting or aiding in the removal or...

604 22, 604 51, A61F 900

Patent

active

058793569

ABSTRACT:
A surgical instrument is intended for use in cataract operations, and includes an ultrasonic probe in the form of a hollow needle which is connected with a suction conduit, through which lens debris is removed by suction together with a rinsing liquid. The rinsing liquid is supplied to the site of surgery via a flow path extending between the hollow needle and a sleeve surrounding this needle with a spacing from the needle. This sleeve extends approximately along the entire length of the hollow needle and has at its distal end at least one outlet aperture for the rinsing liquid. The sleeve has two layers, in which an outer jacket layer is made of tissue compatible plastic such as silicone. A small inner tube layer is positioned and fitted within the outer jacket. This inner tube is made of a material having greater stiffness than the material of the outer jacket, and radially supports the outer jacket.

REFERENCES:
patent: 5354265 (1994-10-01), Mackool
Cataract/IOL Enclosed (p. 11) Publication of Hans Geuder GmbH. Enclosed.

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