Extracorporeal blood processing methods and apparatus
US7169352B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Oct 15, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention provides a method for controlling a fluid separation system, preferably a blood apheresis system having a leukocyte reduction chamber. The method utilizes a three-level alarm system. A first-level alarm condition is triggered in response to a pressure drop in the system to less than or equal to a specified system pressure and pauses fluid flow in at least a portion of the system. A second-level alarm condition is triggered in response to a specified number of said pressure drops within a specified period and reduces the flow rate of the fluid in the system. The alarm conditions may also trigger a visible and/or audible alarm. These alarm levels permit flow through the leukocyte reduction chamber to continue when the pressure drop is caused by a non-serious, self-resolving or easily-correctable condition such as misalignment of system components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.