DEVICE FOR RETROGRADE CATHETERIZATION OF LEFT VENTRICLE IN PATIENTS WITH AORTIC STENOSIS OF HIGH RISK DEGREE Russian patent published in 1998 - IPC

FIELD: medicine, medicinal equipment. SUBSTANCE: catheter as a flexible tube is designed to have two interdependent, equidimensional, incoherent curvatures situated upon a working edge symmetrically to horizontal plane and where a working opening is available, moreover the radius of curvature arch is one eighth of the diameter of aortic valve ring determined in the course of echocardiographic analysis. At the same time proximal curvature is above symmetry plane, and distal one - under symmetry plane. The presence of equidimensional curvatures enables to increase efficiency of catheter's introduction procedure into left ventricular cavity through a narrowed aortic opening and due to good catheter's controllability is possible to shorten the duration period of roentgen tube that enables to decrease radiation loading upon a patient and medicinal personnel, as well. EFFECT: higher efficiency to be used during operations on endocardial interferences in roentgenosurgical rooms in case of aortic stenosis of different etiology. 2 cl, 1 dwg