Feedback control of ultrafiltration to prevent hypotension
US7175809B2 · kind B2 · utility
83Cited by
19References
7Claims
0Family size
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Key dates
| Filing date | Mar 16, 2004 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Apr 20, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/205
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and system for the extracorporeal treatment of blood to remove fluid from the fluid overloaded patient is disclosed that non-invasively measures an oxygen level in the venous blood. The oxygen blood level is used to detect when hypotension is about to occur in a patient. The oxygen level measurements are used as feedback signals. These feedback signals are applied to automatically control the rate of fluid extraction to achieve the desired clinical outcome and avoid precipitating a hypotensive crisis in the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.