Methods for assessing a vessel with sequential physiological measurements
US11666232B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2019 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Jan 19, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0247
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method, device, and system for evaluating a vessel of a patient, and in particular the hemodynamic impact of a stenosis within the vessel of a patient. Proximal and distal pressure measurements are made using first and second instrument while the first instrument is moved longitudinally in the vessel and the second instrument remains in a fixed position. A series of pressure ratio values are calculated, and a pressure ratio curve is generated. The pressure ratio curve may be output to a display. One or more stepped change in the pressure ratio curve are identified using an Automatic Step Detection algorithm. An image is obtained showing the position of the first instrument within the vessel that corresponds to the identified stepped change. The image is registered to the identified stepped change in the pressure ratio curve. The image may be output to the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.