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:
Jul. 27, 2010
Filed:
Jun. 30, 2006
David Lloyd Williams, Newport Beach, CA (US);
Shawn X. Gao, Irvine, CA (US);
David M. Domash, Irvine, CA (US);
Nader Nazarifar, Laguna Niguel, CA (US);
David Lloyd Williams, Newport Beach, CA (US);
Shawn X. Gao, Irvine, CA (US);
David M. Domash, Irvine, CA (US);
Nader Nazarifar, Laguna Niguel, CA (US);
Alcon, Inc., Hunenberg, CH;
Abstract
Embodiments of the present invention provide a system and method for determining the location of the bottom of a fluid chamber in a surgical cassette to calibrate the surgical system. According to one embodiment, the surgical cassette is shaped to allow light from a light source to pass unobstructed to a linear sensor array in an area that is a known distance from the bottom of a fluid chamber. Light rays intersected by solid cassette material, on the other hand, will insufficiently illuminate the linear sensor array. Because the slot is a known distance from the bottom of the chamber, the location of the bottom of the chamber can be determined by determining the transition between illuminated and insufficiently illuminated portions of the linear sensor array.