Blood pump and method of suction detection
US9623161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2015 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Aug 25, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for detecting and mitigating a suction condition are disclosed. The method may include estimating a flow waveform of the pump, identifying pulses in the flow waveform, determining a negative flow based on a valid identification of a pulse, and evaluating a characteristic of the pulse for an existence of a suction condition. In various embodiments, a suction marker is located based on a minimum in a diastolic phase, and the suction marker location is used to identify a probability of a suction condition. A speed of the pump may be adjusted to mitigate the suction condition. A system and method for estimating flow is further disclosed. The method may include interpolating data sets defining pump power to flow for various pump speed values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.