Aspiration assembly having dual co-axial check valves
US4729401A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1987 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Jan 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/789
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An aspiration assembly having dual co-axial check valves for pumping medical fluids with a hypodermic syringe, the assembly having a main body with two passageways in offset relationship to each other, with the passageways coming together at a large central cavity within the main body, a central support structure mounted within the central cavity of the main body, a pair of flexible resilient valve disks engaged by the central support structure, and a body cap having an outlet passageway therein for complementarily enclosing the central cavity of the main body and for retaining the central support structure and dual valve disk in co-axial relationship.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.