Method of managing energy delivered by a shockwave through dwell time compensation
US10517621B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2019 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of delivering shock waves to treat calcified lesions includes advancing an angioplasty balloon mounted on a carrier, to reach the calcified lesion. A pair of electrodes is located within the balloon. The balloon is filled with a conductive fluid. A series of high voltage pulses are supplied to the electrodes. Each voltage pulse has sufficient energy to generate an arc in the fluid and allows current to flow across the pair of electrodes to produce a shock wave. During each pulse, the current flowing across the pair of electrodes is monitored. When the sensed current reaches a predetermined value, that voltage pulse is terminated. The predetermined value is selected to be high enough to ensure the creation of the arc while compensating for the variable dwell time between initial application of a given voltage pulse and creation of the arc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.