Controller for a dual drug delivery system
US4533347A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1983 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Dec 19, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/1689
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for controlling the flow of intravenous fluids to a patient provides for the sequential administration of two different intravenous fluids at independently preselected drop rates. The system includes a primary administration set associated with a first fluid container, a secondary administration set associated with a second fluid container, and a controller having a control valve operatively associated with both administration sets to control the fluid flow rate through the particular administration set in use. The system further comprises a connector means in the primary administration set, upstream from the control valve, for joining the secondary administration set to the primary administration set. A one-way valve, disposed in the primary administration set upstream from the connector means, prevents fluid flow through the one-way valve whenever hydrostatic pressure in the secondary set is greater than the hydrostatic pressure in the primary set. Drop sensors, operatively associated with drip chambers in each of the administration sets, are electrically connected with the controller to monitor and sense whether there is fluid flow in the particular system. The controll…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.