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:
Nov. 01, 1994
Filed:
Nov. 04, 1993
Hans R Grieshaber, Schaffhausen, CH;
Rudolf Demmerle, Schaffhausen, CH;
Urs Vogel, Schaffhausen, CH;
Abstract
An aspiration and irrigation system, in particular for performing surgical operations on an eye of a living being to maintain the intraocular pressure, includes a pressure unit for supplying gaseous fluid to the eye via a first fluid passageway and communicating with an infusion unit comprised of successively arranged first and second infusion bottles, both containing a liquid fluid. An irrigation unit is connected with the second infusion bottle for conducting liquid fluid from said second infusion bottle to the eye via a second fluid passageway; with the liquid fluid in the second infusion bottle being pressurized by gaseous fluid supplied from the pressure unit. A multiport valve selectively controls the flow between the first and second fluid passageways to the eye. Tissue and/or gaseous and liquid fluids are removed from the eye by an aspiration unit.