Dual port syringe
US5882343A · kind A · utility
151Cited by
51References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Oct 7, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.