Expansion ring for eyeball tissue
US11219438B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | May 3, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00862
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A length or strand of resilient material is formed into a continuous ring having multiple tissue-engaging portions for engaging and spreading eyeball tissue segments apart. The strand is formed with elongated straight sides joined by corner portions which are enlarged in directions transverse to the length dimension of each adjacent side. The corner portions constitute the tissue-engaging portions and have top and bottom sections and a connecting section that forms a gap for receiving the tissue. Each side of the ring extends from a bottom section of one corner to a top section of an adjacent corner. When the ring is deployed, the tissue is captured in the gaps at the corners of the ring and also is engaged along each side as that side transitions from a position situated below the tissue to a position situated above the issue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.