Needleless injection port with automatic backcheck valve
US5147333A · kind A · utility
223Cited by
13References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1991 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | May 13, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86767
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needleless injection port and automatic backcheck valve comprises a generally tubular body having a pair of vertically offset ports extending laterally therefrom, and a spool within the bore for controlling communication between the ports. The spool is urged by a spring toward one end of the bore, which is open so that a syringe tip can be inserted to displace the spool from a position in which the ports communicate to a position in which they are isolated and secondary medication can be injected from the syringe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.