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:
Apr. 04, 1989
Filed:
Dec. 30, 1987
Robert C Drews, Clayton, MO (US);
Other;
Abstract
An autoclavable to and fro washing system and method of operation for use in extracapsular cataract surgery with and without infusion. A hand-held, motorized pump unit includes a reversing peristaltic pump for moving an IV solution back and forth through a hollow probe tip keeping the anterior chamber of the eye filled with fluid and safe from collapse, while the cortex of the cataract is emulsified using to and fro washing through the hollow probe tip and then flushed from the eye by the IV solution. Infusion and to and fro washing flow and pressure rates are proportionally varied by a switch on the hand held pump unit, or alternatively by a foot switch. An alternative embodiment includes a smaller and lighter hand piece, including a peristaltic pump and motor located remote from a hand piece and probe tip.