Surgical tubular cutter having a tapering cutting chamber
US5741287A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Nov 13, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/005
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides tubular surgical cutters having conical or tapering cutting chambers along substantially the entire length of their cutting apertures. Tissues which are drawn into such a conical chamber and severed from the adjacent tissue are quite easily drawn proximally for aspiration, substantially reducing the likelihood that they will clog the cutter mechanism. In some embodiments, an inner cutting tube having an orifice which is smaller than that of the outer cutting tube limits the size of tissue fragments entrained within the cutting chamber, further reducing the possibility that those fragments will clog the aspiration lumen and interrupt the tissue removal process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.