Counterbalance mechanism in ophthalmic laser system employing a variable beam balance to provide a variable net load
US12329685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2022 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Apr 23, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00844
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.