Retractable tip for vitrectomy tool
US8216246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2009 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Sep 3, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00763
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A probe for a vitrectomy tool is provided having a vitreous cutter tube having a blunt tip at a distal end and adapted to be coupled at a proximal end to a handpiece of a vitrectomy tool; a retractable outer trocar tube surrounding the vitreous cutter tube having an open distal end with a sharpened edge; and a retraction mechanism coupled to a proximal end of the outer trocar for selectively extending and retracting the outer trocar tube between a first extended position wherein the sharpened edge of the outer trocar is extended beyond the blunt tip of the vitreous cutter tube to facilitate insertion into the eye and a second retracted position wherein the sharpened edge of the outer trocar is retracted behind the blunt tip of the vitreous cutter tube to facilitate safe operation of the probe. A vitrectomy tool for removing material from an eye of a patient is provided having a housing having a proximal end and a distal end and a probe coupled to the proximal end of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.