Self venting plug for venous entry unit
US4193399A · kind A · utility
80Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1977 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Jul 8, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S604/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The specification discloses a self venting plug for a venous entry unit which is a porous plastic body adapted to be removably seated in a hollow flashback chamber. The plug comprises an open pored plastic having a pore size on the order of 10-15 microns, and provides a flow path for venting air from the flashback chamber while inhibiting flow of blood from the chamber. The plug may be used, for example, with over-the-needle and through-the-needle catheter units employing piercing needles, and may be used to anchor a stylet for stiffening a catheter to be forwarded into the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.