Ocular cutter with enhanced cutting action
US5059204A · kind A · utility
89Cited by
19References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1989 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Oct 26, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D11/102
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The inner needle in a guillotine type ocular cutter is ground and placed within the swaged outer needle in an interference fit, so that a radial force is exerted by said inner needle on said outer needle to better shear the ocular tissue. Further, a positive stop is effected on the drive shaft controlling the inner needle so that the distance from the end of the outer needle port to the tissue is minimized. Alternately, the drive shaft has a dwell exerted on it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.