The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1999
Filed:
Jun. 13, 1997
Volker Geuder, Heidelberg, DE;
Hans Geuder GmbH, Heidelberg, DE;
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.