Ophthalmic needle and method for manufacturing the same
US4377897A · kind A · utility
32Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1981 |
| Grant date | Mar 29, 1983 |
| Priority date | — |
| Expiry date | Aug 4, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49927
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved ophthalmic needle and method for manufacturing the same for use with an ophthalmic instrument for extracapsular removal of a cataract. The needle comprises a coaxial tube portion, a separated tube portion, and a tank portion, interposed therebetween for flow conversion purposes. A metal-to-metal seal is effectuated between tubes at the coaxial portion by a spinning method employing a forming die in conjunction with a lathe. A unique use of fixtures is employed to properly orient the various tubes with respect to the tank and to effectuate joint sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.