Supervision device for ambulatory infusion
US11389586B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2017 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Sep 4, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a supervision device (9) for supervising liquid drug flow in a flow channel (20). The supervision device (9) includes a flow detector (1), arranged for operatively coupling with the flow channel (20) and generating a flow detector signal in dependence of a flow in the flow channel (20) at a flow detection location. The supervision device (9) further includes a gas detector (8), arranged for operatively coupling with the flow channel (20) and generating a gas detector signal in dependence of whether liquid drug or gas is present in the flow channel (20) at a gas detection location at a distance upstream from the flow detection location. The supervision device (9) further includes a processing unit (90) in operative coupling with the flow detector (1) and the gas detector (8), wherein the processing unit (90) is configured to determine, based on the gas detector signal, whether non-flowing liquid drug is present at the flow detection location or a gas bubble passes the flow detector if the flow detector signal does not indicate a liquid drug flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.