Version 2.1.1.0

Abstract

Grant Number:	2R44HL068375-02
PI Name:	MONTOYA, JEAN P.
PI Email:	montoya@medarray.com
PI Title:
Project Title:	Novel Dense Hollow Fiber for Blood-Gas Exchange

Abstract: DESCRIPTION (provided by applicant): We have devised a technique that will greatly simplify and make cost effective the fabrication of dense silicone membrane hollow fibers (SMHF) for use in blood gas exchange applications including long-term extracorporeal life support, implantable artificial lung, and other cardiorespiratory procedures. The SMHF can be used to make non-porous, high performing, and economically attractive compact oxygenators, analogous to microporous membrane hollow fiber (MMHF) devices. Current devices using MMHF are prevalent because of enhanced gas exchange due to the convective mixing induced by blood flowing over thousands of tiny hollow fibers. This property allows for designing highly efficient gas exchange devices in relatively compact volumes. Yet MMHF suffer from fowling, and plasma leakage when they are used for extended periods of time, and from gas embolization when the gas side pressure exceeds the blood side pressure. Nonetheless there is currently no analogous non-microporous hollow fiber oxygenators. The present SMHF incorporates the compactness and effectiveness of MMHFs plus the ability to withstand plasma leakage and gas embolization. In Phase 1 we demonstrated that the SMHF can be fabricated continuously and reliably using our proprietary process, and that test oxygenating modules using our SMHF perform comparably to the MMHF counterparts. In Phase 2 we propose to further develop and scale-up the fabrication technique to evaluate the gas exchange, hemodynamic performance, and resistance to plasma breakthrough of the SMHF in adult size oxygenators. These studies will be performed on the bench as well as in-vivo.

Thesaurus Terms:
artificial membrane, blood oxygenator, hollow fiber separation technique, respiratory gas transport, silicon compound, technology /technique development
biomedical equipment development, circulatory assist, extracorporeal circulation, hemodynamics
sheep

Institution:	MEDARRAY, INC.
	1610 HARBAL DR
	ANN ARBOR, MI 48105
Fiscal Year:	2003
Department:
Project Start:	15-FEB-2002
Project End:	28-FEB-2006
ICD:	NATIONAL HEART, LUNG, AND BLOOD INSTITUTE
IRG:	ZRG1

---