Method and apparatus for assisting vascular flow through external compression synchronized with venous phasic flow
US7637879B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2004 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | May 26, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An automatic portable ambulant miniaturized system for applying pneumatic pressure to a body limb including a portable ambulant hand-held fluid source unit, a conduit for delivering fluid generated by the unit, and a pressure sleeve coupled to the conduit and adapted to envelop a body limb. The pressure sleeve contains individually inflatable cells, each cell being subdivided into longitudinally extending confluent intra-cell compartments along the axis of the body limb. The intra-cell compartments are inflated and deflated essentially simultaneously by the portable fluid source unit. To increase the peak venous velocity generated by any kind of external compressive force on a limb with any kind of tempo-spatial regime, the venous phasic flow is monitored to determine so that the venous flow generated by the external compressive force can be synchronized with the in-phasic natural venous flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.