Phacoemulsification circuit
US12133816B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2021 |
| Grant date | Nov 5, 2024 |
| Priority date | — |
| Expiry date | Aug 28, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0612
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a surgical instrument directed to phacoemulsification for cataract eye surgery. The instrument generally includes a dual frequency voltage producing circuit comprising a low-frequency voltage pathway with a low-frequency LC Network and a high-frequency voltage pathway with a high-frequency LC network. A phacoemulsification needle extends from a handpiece able to be driven by a piezoelectric transducer. The piezoelectric transducer is electrically connected to the dual frequency voltage producing circuit. The high-frequency voltage pathway is electrically tuned with the physical high natural frequency of the handpiece and the low-frequency voltage pathway is electrically tuned with the physical low natural frequency of the handpiece for efficient transfer of energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.