Microcannula
US5484417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Nov 30, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0042
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention is a microcannula which comprises a hollow tube having a small cross sectional size and a side beveled tip wherein the angle of the bevel is about 25 degrees. A segment of the hollow tube distal to the beveled tip has an expanded outside diameter which may be provided by a tightly fitting ring member which may be moved to a desired position on the outside of the hollow tube. The tight fit of the ring is preferably obtained through an interference fit between the ring and the out side surface of the hollow tube. A conically tiped trochar is fitted tightly but removably in the lumen of the hollow tube. The trochar may be provided with a flattened or swedged segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.