Method and device for testing venous valves
US5272909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00707
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and device for testing artificial or natural venous valves. The device comprises (a) a fixture for mounting a sample valve on a liquid flow path, (b) a muscle pump component and/or (o) respiratory pump component and/or (d) capacitance reservoir component and/or (e) vertical hydrostatic column component, all of the components being fluidly connected to the flow path to mimic the muscle pump, respiratory pump, capacitance and hydrostatic impedance effects of actual in situ venous circulation in the mammalian body. The invention includes methods of testing venous valves by mimicking known hemodynamic flow conditions within a mammalian body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.