Aspiration catheter systems and methods of use
US11400255B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2019 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Jul 7, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/091
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of performing a medical procedure in a cerebral vessel including advancing a guide sheath into an internal carotid artery; advancing a catheter within a lumen of the guide sheath until a distal end of the catheter is adjacent to an embolus in a cerebral vessel; activating a vacuum source to create a vacuum in a lumen of the catheter; and cyclically controlling the vacuum applied with a valve. The vacuum is cyclically controlled by opening the valve for a first time period, closing the valve for a second time period longer than the first time period, opening the valve for a third time period shorter than the first time period, then closing the valve for a fourth time period greater than the first time period, and repeating for at least 40 cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.