Manifold medication injection apparatus and method
US5505704A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1995 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Jun 1, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/583
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hand-held dual liquid medication injector have dual, bi-directional dosage metering mechanisms for permitting a variable dosage amount for each cartridge of liquid medication. The medications are mixed within a manifold having a valved mixing chamber and are injected via a single cannula. The mixing chamber is valved such that backflow of mixed or unmixed medications into the cartridges is prevented. An injection mechanism, independent of the metering mechanism, loads and injects the liquid medication. In one embodiment, downward movement of the injection mechanism during injection is translated into horizontal movement by the plunger mechanism. In another embodiment, a power-assisted plunger mechanism accomplishes injection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.