Systems and methods for evaluating hemodialysis arteriovenous fistula maturation
US10251606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2015 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Nov 3, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09183
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to evaluation of maturity of arteriovenous (AV) fistula using guidewires that measure intravascular blood flow and/or pressure. The invention provides methods of evaluating AV fistula maturation using an instrumented guidewire to measure intravascular flow and/or pressure. By using a small diameter guidewire that does not interfere substantially with the flow, an accurate measurement can be made that is useful for identifying when a fistula is mature and therefore ready to be used for hemodialysis. The flow of blood through the fistula is measured using the guidewire and the measured flow and/or pressure of blood is used to determine if the fistula is mature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.