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:
Sep. 22, 2026
Filed:
Oct. 09, 2023
Bausch + Lomb Ireland Limtied, Dublin, IE;
James T. Perkins, St. Peters, MO (US);
Logan C. Kluesner, St. Charles, MO (US);
David W. Hertweck, Valley Park, MO (US);
Bausch + Lomb Ireland Limited, Dublin, IE;
Abstract
Occlusion detection in a vacuum-based system for ophthalmic surgery includes a handpiece and aspiration and irrigation subsystems. The aspiration subsystem includes an aspiration line coupled to a handpiece, an aspiration pressure transducer, and a vacuum-based aspiration pump. The irrigation subsystem includes an irrigation line coupled to an irrigation source having an irrigation fluid, a handpiece, an irrigation pressure transducer, and a positive displacement pump. The system also includes a processor coupled to the positive displacement pump and a memory coupled to the processor. The memory includes executable instructions that cause the processor to determine a flow rate of irrigation fluid through the irrigation line, based on a rotation rate of the positive displacement pump, and provide an occlusion warning when the flow rate is below a threshold level and a vacuum is being commanded.