Split piston metering pump
US10512719B2 · kind B2 · utility
0Cited by
132References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2018 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Jun 8, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/1422
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A micropump according to the invention uses axially oriented pistons to define a pump volume. Translating the pistons axially with respect to each other within a pump housing draws a metered amount of fluid into the pump volume from a reservoir port for delivery to a cannula port when the space is collapsed. Radially situated seals on the pistons cooperate with the axial movement to close off and open the cannula port and the reservoir port respectively at different positions of the piston stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.