Fluid dispensing device
US4202333A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Nov 8, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14506
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dispensing device comprises a metering assembly adapted to be coupled to a conventional syringe, which metering assembly includes a long length of capillary tubing through which the fluid must pass into a flexible hose which delivers the fluid and means for applying a uniform force to the plunger to provide fluid flow through the capillary tube at a slow, steady rate over a long period of time. The metering assembly includes parts moveable between a metering position at which fluid flowing through the metering assembly must pass through the capillary tubing, and a purging position at which fluid propelled by manual operation of the syringe can bypass the capillary tube and flow rapidly through the metering assembly to purge the hose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.