Dripless cannula system usable with a sampling container for fluid sampling and operable to minimize fluid loss at a fluid sampling site
US5474546A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | May 9, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/197
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dripless cannula system usable with a syringe or other fluid container in a fluid sampling procedure and operable to minimize retention of residual fluids at a sampling site following the sampling procedure. In the preferred embodiment, a vacuum chamber operatively connected to a blunt cannula of the dripless cannula system is operative upon withdrawal of the cannula from the sampling site to draw residual fluids at the site into the vacuum chamber for subsequent disposal. The dripless cannula system of the present invention is a simple, effective apparatus for minimizing the presence of residual fluids at a sampling site following a sampling procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.