System and method of monitoring dislodgement of venous needles in dialysis patients
US11246971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2017 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Feb 4, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/30
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and a system are provided for detecting a condition indicative of a dislodged needle in a hemodialysis procedure. A venous return pressure for a patient undergoing dialysis is measured. The venous return pressure is analyzed via a controller, and an intravascular blood pressure in proximity to a location of needle insertion into the patient is derived. A lower limit is calculated as a function of the intravascular blood pressure via the controller. An average of the venous return pressure is calculated via the controller during a predetermined time window. The average is compared to the lower limit via the controller, and if the average is within a specified range of the lower limit, the controller determines that a condition indicative of a dislodged needle is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.