Detecting access disconnect by pattern recognition
US7995816B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 24, 2007 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Jun 8, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/1588
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood detection system is used to detect blood in a patient undergoing an extracorporeal blood therapy, such as hemodialysis or apheresis. The blood detection system uses a digital video device, which may be a camera, such as a standard digital video camera, a low light camera, an infrared camera, or a night vision camera. The digital image is sent to a computer with image processing and pattern recognition software. The software is used to detect whether a pool of blood is forming at the access site. The system is able to detect a pool of blood atop the access site, such as when a leak or a dislodgement of a needle occurs. The system is also able to detect pooling of blood under the skin, as a result, for instance, infiltration of an arteriovenous fistula.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.