Aspiration thrombectomy system and methods for thrombus removal with aspiration catheter
US10722253B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2019 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Nov 12, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0693
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A clot removal system includes a catheter having proximal and distal ends and defining a lumen configured to be filled with a liquid column having a proximal portion, a vacuum pump supplying vacuum, a vent container holding vent liquid, a vent valve configured to fluidically communicate with the vent liquid and with the proximal portion of the liquid column at the proximal end of the catheter, a vacuum valve configured to fluidically communicate with the vacuum and with the proximal portion of the liquid column at the proximal end of the catheter, and a controller configured to carry out a pre-determined pattern of opening and closing the vent and vacuum valves to change a level of vacuum at the distal end and, while changing the level of vacuum at the distal end, to substantially prevent forward flow of the liquid at a distal end of the liquid column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.