Hydraulically actuated pump for long duration medicament administration
US9072828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2008 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Mar 3, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2250/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Presently disclosed is a hydraulic pump device and its use thereof, especially in a fluid delivery system. In one embodiment, the fluid delivery system is an inexpensive, single-use device for slow dosing medicament applications. The fluid delivery system may employ a spring-compressed bellows crank or other combination of simple mechanisms operating according to the well-known peristaltic principle to force a volume of ultrapure bio-inert hydraulic fluid through an aperture, thereby expanding one chamber of a two chamber hydraulic cylinder. The second, fluid storage chamber, containing the medicament, is emptied through a conventional orifice in response to the expansion of the pump chamber. The medicament may then flow through any suitable infusion set into a patient removeably attached thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.