公开(公告)号：US20230000674A1

公开(公告)日：2023-01-05

申请号：US17808086

申请日：2022-06-21

Applicant: AMO Development, LLC

Inventor： Frank D. Fellenz ,  Roger Accurso ,  Jorge Haro

IPC: A61F9/009

Abstract: A counterbalance mechanism in an ophthalmic laser system balances the weight of the laser beam delivery head and provides small, precise and repeatable variations in the net load exerted by the laser head on the patient's eye over a defined distance of travel. The counterbalance mechanism includes a balance beam pivotably mounted on a support block, with the laser head and a counterweight mounted on its two ends. The counterweight is movable along the balance beam via a linear motion bearing. A mechanical link links the counterweight to the support block; the link has a predefined length and is pivotable around its respective connection points on the support block and the counterweight. When the balance beam pivots, the link causes the counterweight to move along the balance beam, thereby changing the mechanical advantage of the counterweight and varies the counterbalancing force to provide variations in the net load.