Method and device for preventing contrast associated nephropathy
US6554819B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | May 15, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/3659
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and device for preventing contrast associated nephropathy are disclosed. When contrast solution is injected into the coronary artery of a patient, blood is prevented from flowing through the coronary sinus into the right atrium. The blood in the coronary sinus is bypassed to a filtration device which filters out the contrast solution from the blood and recirculates the blood back to the patient. Preferably, blood flow from the coronary sinus is blocked by a balloon catheter which includes a port distal of the balloon so that when the sinus is occluded, blood flows from the sinus into the central lumen of the catheter where it can be directed to the filtration device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.