Simulated heart and valve root for training and testing

Details Simulated heart and valve root for training and testing Simulated heart and valve root for training and testing

G - Physics

09

B

G09B 23/30 (2006.01) A61F 2/24 (2006.01)

Patent

CA 2649487

A simulated heart valve (22) root used for training physicians in techniques of implantation of prosthetic heart valves and testing the efficacy of prosthetic heart valves. The simulated heart valve root is made of a flexible, tubular body (30) having an inner wall (36) defining an annular ledge (60) within which the prosthetic heart valve is implanted. Discrete nodes or areas of calcification may be simulated on the annular ledge by using pins (38) having their inner ends a pinhead shape. A simulated aortic root includes alternating cusps (50) and commissures (52) with calcification simulated at least at one of the commissures. A tear (80) in the annular ledge may also be provided which simulates a tear that might occur from a valvuloplasty procedure. A method of testing includes mounting the simulated heart valve root in a flow conduit, implanting a prosthetic heart valve in the root, applying pulsatile flow to the assembly, and monitoring for leaks.

La présente invention concerne une racine de valvule cardiaque utilisée pour former les médecins aux techniques d'implantation de prothèses de valvules cardiaques et tester l'efficacité desdites prothèses. La racine de valvule cardiaque artificielle est constituée d'un corps tubulaire souple dont une paroi intérieure définit un rebord annulaire à l'intérieur duquel est implantée la prothèse de valvule cardiaque. Des nAEuds ou zones discrètes de calcification simulée peuvent être placés sur le rebord annulaire. Une racine aortique artificielle comprend une alternance de cuspides et de commissures, une calcification étant simulée au niveau de l'une des commissures au moins. Il est également possible de former une déchirure dans le rebord annulaire, dont le but est de simuler une déchirure pouvant provenir d'une procédure de valvuloplastie. Une méthode d'essai comprend notamment de monter la racine de valvule cardiaque artificielle dans un conduit d'écoulement, implanter une prothèse de valvule cardiaque dans la racine, appliquer un courant pulsé à l'ensemble et surveiller la présence de fuites.

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