Device and method for monitoring a patient access, in particular a vascular access in extracorporeal blood treatment
US8180443B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2007 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Jan 20, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/3656
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a device and a method for monitoring a patient access, in particular a vascular access in extracorporeal blood treatment, in which a patient's blood is withdrawn from the patient via an arterial conduit and is returned to the patient via a venous conduit. The blood is conveyed by a blood pump, preferably an occlusive blood pump, such as a roller pump. To monitor the vascular access, the electrical AC voltage and/or the alternating current and/or a derived electrical measured variable that is generated by electrostatic charges during operation of the occlusive peristaltic pump is monitored. If the triboelectric AC voltage generated by the blood pump and/or the alternating current and/or the derived electrical measured variable lies within predetermined limits, this indicates that the vascular access is faulty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.