Vitreous cutter
US4014342A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1975 |
| Grant date | Mar 29, 1977 |
| Priority date | — |
| Expiry date | Apr 11, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00685
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical instrument comprising a housing with a motor and source of power contained in the housing. A removable sheath is placed over the housing and a cutter assembly is removably mounted to the housing so that the housing is protected from external materials and contamination. The cutter assembly has a body, a tube projecting from the body, a blade positioned in the tube and a drive transfer mechanism mounted in the cutter body, connecting the blade to the motor. The tube defines an aperture and the blade in combination with the walls defining the aperture shears tissue entering the hole. A second passage is formed in the cutter body communicating with the tube to allow pressure differentials to be exerted to the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.