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РЖ ВИНИТИ 34 (BI38) 96.06-04А3.205

SieSS, T.
Hydraulic refinement of an intraarterial microaxial blood pump [Text] / T. SieSS, H. Reul, G. Rau // Int. J. Artif. Organs. - 1995. - Vol. 18, N 5. - P273-285 . - ISSN 0391-3988
Перевод заглавия: Гидравлическое усовершенствование внутриартериального микроосевого кровяного насоса
Аннотация: Intravascularly operating microaxial pumps have been introduced clinically proving to be useful tools for cardiac assist. However, a number of complications have been reported in literature associated with the extra-corporeal motor and the flexible drive shaft cable. In this paper, a new pump concept is presented which has been mechanically and hydraulically refined during the developing process. The drive shaft cable has been replaced by a proximally integrated micro electric motor and an extra-corporeal power supply. The conduit between pump and power supply consists of only an electrical power cable within the catheter resulting in a device which is indifferent to kinking and small curvature radii. Anticipated insertion difficulties, as a result of a large outer pump diameter, led to a two-step approach with an initial 6,4 mm pump version and a secondary 5,4 mm version. Both pumps meet the hydraulic requirement of at least 2.51/min at a differential pressure of 80-100 mmHg. The hydraulic refinements necessary to achieve the anticipated goal are based on ongoing hydrodynamic studies of the flow inside the pumps. Flow visualization on a 10:1 scale model as well as on 1:1 scale pumps have yielded significant improvements in the overall hydraulic performance of the pumps. One example of this iterative developing process by means of geometrical changes on the basis of flow visualization is illustrated for the 6.4 mm pump. Германия, Helmholtz-Inst. for Biomed. Eng. at Aachen Univ. of Technology (RWTH), D-52074 Aachen. Ил. 18. Библ. 13

ГРНТИ	34.57.15

ВИНИТИ 341.57.15.27
Рубрики: АППАРАТУРА ВСПОМОГАТЕЛЬНОГО КРОВООБРАЩЕНИЯ
МИКРООСЕВОЙ НАСОС
МИКРОМОТОР
СОСУДИСТЫЙ ДОСТУП
ЛОКАЛЬНАЯ ПЕРФУЗИЯ ОРГАНА
НЕПУЛЬСИРУЮЩИЙ КРОВОТОК

Доп.точки доступа:
Reul, H.; Rau, G.

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