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Feasibility Testing of the RT Cardiac Systems Percutaneous Mechanical Circulatory Support Device.
Monreal, Gretel; Koenig, Steven C; Taskin, Mustafa Ertan; Shambaugh, Charles; LaRose, Jeffrey A; Slaughter, Mark S.
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  • Monreal G; From the Department of Cardiovascular and Thoracic Surgery, University of Louisville, Louisville, Kentucky.
  • Koenig SC; From the Department of Cardiovascular and Thoracic Surgery, University of Louisville, Louisville, Kentucky.
  • Taskin ME; Department of Bioengineering, University of Louisville, Louisville, Kentucky.
  • Shambaugh C; Medtronic Inc, Minneapolis, Minnesota.
  • LaRose JA; RT Cardiac Systems, Raleigh, North Carolina.
  • Slaughter MS; RT Cardiac Systems, Raleigh, North Carolina.
ASAIO J ; 69(6): 519-526, 2023 06 01.
Article en En | MEDLINE | ID: mdl-36763814
RT Cardiac Systems (RTCS, Raleigh, NC) is developing an intravascular percutaneous mechanical circulatory support (pMCS) device drive system for use during high-risk percutaneous coronary intervention and emergent cardiogenic shock. The proprietary pMCS device (US patent 10,780,206) consists of a miniaturized axial flow pump with an integrated motor connected via a short flexible drive system. This novel flexible drive system creates a flexible pump that is advantageous for percutaneous placement and conforming to anatomy. This design also has the benefit of not requiring a continuous external lubrication source. In this article, we present engineering development and feasibility testing of the prototype pMCS system. Computational fluid dynamics (CFD) modeling was performed to evaluate candidate blade set designs (impeller leading and trailing edges, diffuser) and predict hydrodynamic performance and hemolysis risk. Bench testing of candidate lip seal designs (radial interference, durometer, and seal angle) was evaluated for leak rate. Two 16Fr prototype devices were then fabricated and tested in a static mock flow loop. Experimental testing demonstrated 3 L/min flow against 110 mmHg and 4 L/min flow against 80 mmHg, which matched the CFD-predicted hydrodynamic performance. These results demonstrate feasibility of the engineering design and performance of the prototype devices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Corazón Auxiliar / Intervención Coronaria Percutánea Tipo de estudio: Prognostic_studies Límite: Humans Idioma: En Revista: ASAIO J Asunto de la revista: TRANSPLANTE Año: 2023 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Corazón Auxiliar / Intervención Coronaria Percutánea Tipo de estudio: Prognostic_studies Límite: Humans Idioma: En Revista: ASAIO J Asunto de la revista: TRANSPLANTE Año: 2023 Tipo del documento: Article Pais de publicación: Estados Unidos