System for controlling blood flow rate in an extracorporeal blood oxygenation circuit
US11116961B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2016 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Jun 18, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/30
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A control system in a blood line (12) of a cardiopulmonary bypass perfusion system (1) comprises a flow sensor (26) to determine a flow value indicative of the flow rate, a controller configured to process the flow value, and an adjustable restriction (28) responsive to the controller, to reduce the flow rate in the venous blood line (12) to maintain a flow rate to the venous blood reservoir that does not exceed a restriction threshold. As the adjustable restriction (28) is responsive to the flow sensor (26), this provides a closed loop control mechanism that avoids restricting the blood line (12) of the perfusion system (1) more than intended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.