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. 03, 1998
Filed:
Dec. 26, 1995
Richard J Mackool, Astoria, NY (US);
Other;
Abstract
Varying flow rate and/or the fluid pressure head through a surgical instrument by selecting which of a plurality of fluid lines will supply fluid through the infusion line of the instrument. The fluid lines connect with supply ports of a common connector that has a common discharge port in fluid connection with the infusion line. The fluid lines are each in fluid connection with either a common fluid source, fluid sources at different elevations, or fluid sources at different or the same pressures. Flow control may be based on opening and closing of valves in the flow lines or operating and stopping operation of pumps or vacuum devices. A controller may determine which flow control to implement based on sensing of pressure changes in the eye or on known capacities of the pumps or vacuum devices. The sensing may be effected with a pressure transducer within the eye, but spaced from the infusion and aspiration lines of the surgical instrument.