Phacoemulsification needle
US8764782B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2009 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320098
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A phacoemulsification needle having a hollow passageway terminates in a straight needle tip formed off-axis from the passageway, allowing the needle tip to move eccentrically when the needle is subjected to torsional or longitudinal vibratory motion. The tip may be flared or may be coextensive with the needle body. The aspiration passageway formed through the needle body may be formed off-axis from the needle body axis. The tip may also be angled with respect to the needle body. The inner and outer surfaces of the needle tip are roughened, as by sandblasting, to enhance the cutting effect of the tip when used with a non-longitudinal handpiece. The lip of each needle tip is polished to a high degree of smoothness and the edges of the tip are rounded to lessen the incidence of snags or cuts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.