Electrically enhanced retrieval of material from vessel lumens
US11058444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Jan 19, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/9528
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.