Aspiration thrombectomy system and methods for thrombus removal with aspiration catheter
US10531883B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2019 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Jul 18, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0693
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A thrombectomy removal system includes a catheter having a distal end and defining a lumen filled with a liquid column having a proximal portion and a distal portion, a vacuum source, a vent liquid source, and a vacuum and vent control system configured to cyclically connect or disconnect the vacuum source and the vent liquid source to change a level of vacuum at the distal end and substantially prevent forward flow. The vacuum source and the vent source are respectively fluidically connected to the vacuum and vent valves. A manifold connects the proximal portion to the vacuum and vent sources through the valves. Control of the valves prevents forward flow of the distal portion out from the distal end during each cycle. Each cycle can have states including vacuum-only, first double-closed, vent-only, and second double-closed. A time of the double-closed states can be no greater than 30 ms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.