Handpiece for cataract surgery
US5453087A · kind A · utility
Inventor
Key dates
| Filing date | Nov 26, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Nov 26, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/0813
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic handpiece for cataract surgery comprises a driver assembly (10), a housing (11), a nose part (13, 113) and an end or rear manifold (20) of one-piece construction. Housing (11) includes tubular parts (12, 12' and 14), which are concentrically assembled and attached to and between nose part (13, 113) and rear or end manifold (20). Nose part (13, 113) is provided with a plurality of integral front irrigation holes (19) and end manifold (20) with a plurality of integral irrigation holes (36a, 36b and 36c). The number and inclinations of the irrigation holes permit and maintain a uniform, gradual and substantially unimpeded and high volume flow of irrigation fluid from an irrigation luer fitting (2) into the annular space between tubular parts (12, 12' and 14), resulting in a fluid flow concentric with driver assembly (10) and inside housing (11), thus eliminating any need for external irrigation tubes of conventional handpieces. In one embodiment, outer tube (12, 12') is also capable of being completely removed from the unit comprising nose part (113), inner tube (14) and rear manifold (20) and this unit's internally sealed driver assembly (10), to permit full cleansing o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.