Devices, systems and methods for assisting blood flow
US7588530B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 19, 2005 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Dec 30, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/896
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pump includes a flexible conduit, at least one valve attached to the flexible conduit about the perimeter of the valve; and a drive mechanism to move the valve to pump blood within the conduit. The drive mechanism can, for example, be adapted to complete a single stroke during each heart ventricle contraction and/or to complete multiple strokes (that is, oscillate) during a single contraction. The moveable valve includes a plurality of openings. Each of the plurality of openings has a closure mechanism in operative connection therewith which is operable to at least partially close the opening to which it is operatively connected when the moveable valve is moved forward and to open the opening to which it is operatively connected when the valve is moved rearward. In one embodiment, each closure mechanism includes a flap of resilient material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.