Method and device for monitoring a vascular access during a dialysis treatment
US6077443A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Aug 5, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/52
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a method and device for monitoring a vascular access during a dialysis treatment, pressure pulses generated by a balancing device connected in a dialysis fluid inlet line and drain line are monitored in the extracorporeal blood circulation path. The pressure pulses are detected with a pressure sensor in the venous blood line and are analyzed in an analyzer unit. When there is a characteristic change in pressure pulses in the extracorporeal blood circulation path, a faulty venous access is deduced, i.e., the needle has slipped out. Upon a faulty venous access condition, an alarm generator generates an acoustic and/or optical alarm, and the blood flow in the extracorporeal circulation is interrupted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.