Infusion sleeve with distendable port
US8864710B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2010 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Sep 12, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00745
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An infusion sleeve for use with a phacoemulsification needle has a hollow body with an open end by which the sleeve is attachable to a handpiece and an open tip through which a phacoemulsification needle is passed. Irrigating liquid is directed from the handpiece through the sleeve. At least one discharge ports is formed in the sleeve to provide increased flow of irrigating liquid into the eye. The port or ports may differ in size, shape and positioning on the sleeve. At least one such port has a slit extending therefrom cutting through the sleeve and adapted to distend or open up under certain flow conditions, effectively increasing the cross-sectional area of the port available for flow. When flow conditions return to normal the slit returns to its “closed” position. Another such port is formed as a flap which opens and closes responsive to the flow of the irrigating liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.