Wave-based patient line blockage detection
US10172993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2016 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Nov 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dialysis machine (e.g., a peritoneal dialysis (PD) machine) can include a pressure sensor mounted at a proximal end of a patient line that provides PD solution to a patient through a catheter. During treatment, an occlusion can occur at different locations in the patient line and/or the catheter. Elastic waves may be generated at a pump that introduces (e.g., for fill cycles) or withdraws (e.g., for drain cycles) the solution into/out of the patient line. For example, when the solution is introduced or withdrawn suddenly, elastic waves travel distally down the patient line until they encounter the occlusion, and are then reflected back (e.g., toward the pressure sensor).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.