Vascular flow control devices and methods
US11564690B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2019 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Apr 2, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/1205
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of producing an arteriovenous (AV) fistula includes producing an anastomosis between a primary blood vessel (e.g., a vein) and a secondary blood vessel (e.g., an artery). A collateral (or competing) blood vessel in fluid communication with one of the primary blood vessel or the secondary blood vessel is identified. A reversible flow restrictor is then applied to the collateral blood vessel to reduce a blood flow rate through the collateral blood vessel. In some embodiments, the anastomosis can be produced percutaneously. In some embodiments, the reversible flow restriction (or a portion thereof) can be removed from the collateral blood vessel. In other embodiments, the reversible flow restriction (or a portion thereof) can be adjusted to allow increased blood flow therethrough while within the collateral blood vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.