Automated drug infusion system with autopriming
US5496273A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Jul 5, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pumping system for positive displacement, volumetric liquid control includes a pump having a pumping chamber with a pumping chamber inlet and a pumping chamber outlet. The pumping system further includes a liquid supply inlet for receiving liquid from a liquid supply, and an detector for detecting air in liquid flowing through the liquid path. A liquid valve actuator regulates liquid flow through the liquid supply inlet and a second valve actuator regulates liquid flow through the pumping system outlet. A controller is responsive to an output from the detector to control the pump, the first valve actuator and the second valve actuator such that liquid is directed through the liquid supply inlet and the pumping system outlet during an initial priming sequence until the quantity of air in liquid at the pumping system outlet corresponds to a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.