Title:
SYSTEMS AND METHODS FOR DETECTING VASCULAR ACCESS DISCONNECTION
Document Type and Number:
WIPO Patent Application WO/2015/183976
Kind Code:
A3
Abstract:
A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first indwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and/or setting provisional flags for a disconnection event that may be cleared if the signal changes before the expiration of a counter.
Inventors:
VAN DER MERWE DIRK A (US)
NORRIS MICHAEL G (US)
BAKER MICHAEL A (US)
BALLANTYNE TODD A (US)
WILT MICHAEL J (US)
NORRIS MICHAEL G (US)
BAKER MICHAEL A (US)
BALLANTYNE TODD A (US)
WILT MICHAEL J (US)
Application Number:
PCT/US2015/032702
Publication Date:
December 30, 2015
Filing Date:
May 27, 2015
Export Citation:
Assignee:
DEKA PRODUCTS LP (US)
International Classes:
A61M1/36
Domestic Patent References:
| WO2008028653A2 | 2008-03-13 |
Foreign References:
| US20080065006A1 | 2008-03-13 | |||
| US8180443B1 | 2012-05-15 | |||
| US20140112828A1 | 2014-04-24 | |||
| US20030176829A1 | 2003-09-18 |
Attorney, Agent or Firm:
POMIANEK, Michael J. et al. (Greenfield & Sacks P.C.,600 Atlantic Avenu, Boston MA, US)
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