Apparatus and method for producing very small microchannels in tissue
US10245108B2 · kind B2 · utility
2Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Aug 16, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/20351
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A lens system includes: a plurality of aligned lenses; a first lens having negative refractive power; a second lens having negative refractive power; a third lens with positive refractive power; and, a fourth lens with positive refractive power; a light beam transmitted through the first, second, third and fourth lenses is first diverged by the first and second lenses, collimated by the third lens and focused by the fourth lens to form a small spot at the focal plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.