Apparatus for intravascular cavitation or delivery of low frequency mechanical energy
US5344395A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1992 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Jan 24, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for recanalization of a blood vessel obstruction by application of low frequency mechanical energy to a vessel site or by creation of cavitation at the vessel site. The system includes a catheter assembly having a wire located within and extending through a wire support tube and adapted to move axially therewith. A driving apparatus positioned at a proximal portion of the catheter assembly imparts energy to the wire to oscillate it axially. A tip is connected to a distal end of the wire and imparts low frequency mechanical energy or causes cavitation at the vessel site to recanalize it. Further, a fluid particle removal system can be incorporated within the catheter assembly to convey pressurized fluid via the wire support tube to the tip where the fluid is redirected in a proximal direction into a second tube of the catheter assembly coaxially positioned around the wire support tube. Particulate from the vessel obstruction being recanalized becomes attached viscously in the redirected pressurized fluid and is withdrawn from the vessel site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.