Injection port for single-use syringe
US5222948A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Sep 9, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7891
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved injection port (1) for a single-use syringe is described. One embodiment of the injection port has a one-way valve system for making it more difficult to reuse the syringe (2). The one-way valve system has a flap or diaphragm valve (6) housed in a valve chamber (11) at the proximal end of port cylinder (45). When the valve (6) is seated against valve seat (51) on valve cap (5), refilling of the syringe is blocked. During injection, the valve (6) unseats and moves toward radial ribs (7), allowing flow of medicament into the proximal end of a needle (2). Another embodiment of the injection port (1) includes longitudinal grooves (8) on the interior surface of the chamber (12) at the distal end of cylinder (45). The grooves (8) vent pressure from a Luer syringe inserted in the distal end of the cylinder (45).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.