Surgical instrument
US4900300A · kind A · utility
Inventor
Key dates
| Filing date | Feb 24, 1989 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Feb 24, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to the design and application of a goniectomy instrument for the purpose of diagnostically and therapeutically removing tissue from the anterior chamber angle of the eye and for retrieving this tissue for further examination. The surgical instrument of this invention comprises in combination: a hollow, tapered shaft having a cutting edge at one end as an integral part thereof; a retractable stylet contained within the hollow interior of the tapered shaft; and an irrigation port running along the outside of the tapered shaft. This instrument is useful for excising tissue to relieve an obstruction blocking the outflow of aqueous humor from the eye as well as for providing specimens of the excised tissue for histopathological examination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.