Blood circulation assistance device
US6984201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2003 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Mar 25, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/0283
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood circulation assistance device (1), for location around a blood conduit (20). The device comprises: an inflatable bladder (10) moveable between a contracted form and an expanded form, for compressing the blood conduit (20) to provide counterpulsation. Pump means (30) in fluid communication with the bladder (10) move the bladder (10) from the contracted form to the expanded form. The pump means (30) comprises a centrifugal impeller (62) rotatable about an axis (61) to effect pumping. The impeller (62) is moveable axially between first and second positions to effect a reversal of the direction of pumping. Control means (50), in communication with the pump means, is capable of monitoring the cardiac cycle of an individual and triggering the pump means (30) to move the bladder (10) to the expanded form at diastole. An outer cuff, surrounds at least a portion of the bladder (10), providing an outer limiting extent to the movement of the bladder (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.