Development of a Miniature Hydrodynamically Suspended Intrathoracic Tesla Pump

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$149,972.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
1R43HL108434-01
Award Id:
n/a
Agency Tracking Number:
R43HL108434
Solicitation Year:
2011
Solicitation Topic Code:
NHLBI
Solicitation Number:
PA10-050
Small Business Information
1635 ENERGY PARK DRIVE, ST. PAUL, MN, 55108-2703
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
945753622
Principal Investigator:
RICHARD NAZARIAN
(651) 917-4060
nazarian@minnetronix.com
Business Contact:
JONATHAN PIERCE
(651) 917-4060
jdpierce@minnetronix.com
Research Institution:
Stub




Abstract
DESCRIPTION (provided by applicant): The goal of this proposal is to develop a miniaturized Left Ventricular Assist Device (LVAD) that is small enough to be placed in the thoracic cavity at the apex of the heart. The miniature pump is based on the Tesla principal and will be supported passively with conical hydrodynamic bearings, thus greatly reducing the pump size compared to previous Tesla pump designs. The final clinical system will consist of the implanted pump, controller with battery, and transcutaneous energy transmission coil. It will be a completely implantable system allowing the patient a near normal life style A passively suspended first generation Tesla type LVAD has been designed and tested in vitro and in vivo, demonstrating flows above 12 L/min with 90 mmHg pressure rise and low hemolysis levels. However, the device is large compared to current contemporary LVADs. The following specific aims are to be accomplished in this Phase 1 SBIR: 1) Use CFD and FEA studies to improve the motor designand system efficiency, minimize fluid stresses and minimize system size. These studies specifically will include optimization of conical hydrodynamic thrust bearings capable of supporting both axial and radial loads; 2) Complete the design and manufactureof the miniature Tesla pump employing the conical hydrodynamic bearing; 3) Adaptation of an inlet pressure sensor and controller to the miniature Tesla pump; and 4) Performance test (HQ) the miniature Tesla pump and perform initial hemolysis testing. Thisproposed research is intended to demonstrate that a miniaturized Tesla pump can be manufactured and that the pressure flow relationship and low rate of hemolysis of the larger device are maintained or improved. In addition, a pressure sensor that has beendeveloped for the larger system can be incorporated in the miniature Tesla, thereby providing a means for implementing suction control.

* information listed above is at the time of submission.

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