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Статті в журналах з теми "Implants percutanés"
Moini, C., B. Sidia, D. Poindron, L. Fiorina, A. Farge, W. Amara, and M. El Issa. "Quand implanter un stimulateur cardiaque après remplacement valvulaire aortique percutané ? Revue de littérature." Annales de Cardiologie et d'Angéiologie 65, no. 5 (November 2016): 346–51. http://dx.doi.org/10.1016/j.ancard.2016.09.003.
Повний текст джерелаSabin, P., P. Delcampe, J. P. Bessou, and J. M. Péron. "O 6-11 Adaptation du protocole chirurgical de pose des implants extra-oraux pour la mise en place d’un connecteur électrique percutané permanent, destiné aux assistances circulatoires électriques implantées de seconde génération : premiers résultats expérimentaux." Revue de Stomatologie et de Chirurgie Maxillo-faciale 106, no. 4 (September 2005): 26. http://dx.doi.org/10.1016/s0035-1768(05)85918-2.
Повний текст джерелаBesnier, Emmanuel, Chadi Aludaat, Hélène Eltchaninoff, and Éric Durand. "Ce qu'un réanimateur doit savoir des TAVI." Médecine Intensive Réanimation, December 24, 2020. http://dx.doi.org/10.37051/mir-00047.
Повний текст джерелаДисертації з теми "Implants percutanés"
Alleau, Thibaut. "Development of a numerical platform to model the mitral valve." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2649.
Повний текст джерелаMitral insufficiency is the first valvular disease worldwide, with a 2% prevalence. When open-heartsurgery is impossible for the patient, surgeons use percutaneous devices to help the mitral leaflets coapt. However, the only device currently available is based on the edge-to-edge mitral valve repair technique. This type of implant is not adapted for patients suffering from functional mitral insufficiency, where the ventricle is responsible for the lack of coaptation of the leaflets. This thesis aims to provide a numerical platform to help the development of a mitral valve implant adapted for those patients. Several mitral valve geometries were created from a parametric model using anatomical measurements. Finite element simulations of the mitral valve were performed using ADINA to determine the valve closure under constant pressure. Several material models were developed in large strain and large deformation to model the valve closure accurately. Pathological behaviour such as annulus dilatation and chordae rupture were modelled, and several methods were tested to implement medical devices. Fluid-structure interaction of a 2D mitral valve was obtained using an ALE description and a monolithic coupling approach. Both the systole and the diastole were reproduced and studied, and the hermetic seal of the valve was detailed. The numerical platform developed is suited to model mitral valve function and can be used to help the development of mitral implants. In addition, the parametric geometry model and the anisotropic material model will be useful to depict with realism the valve function. A 3D fluid-structure interaction of the mitral valve could be developed
Amahzoune, Brahim. "Mise au point d'une prothèse valvulaire implantée par voie endovasculaire : Effet du sertissage et déploiement sur les feuillets valvulaires et application aux voies pulmonaires dilatées." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00767945.
Повний текст джерелаAmahzoune, Brahim. "Mise au point d’une prothèse valvulaire implantée par voie endovasculaire : effet du sertissage et déploiement sur les feuillets valvulaires et application aux voies pulmonaires dilatées." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA114864/document.
Повний текст джерелаPercutaneous valve implantation (PVI) is a new with fast growing expansion procedure. Nevertheless, this promising technic has some reefs. Impairment of the implanted device at deployment is one of them. Valvular implantation in dilated right ventricular outflow tract (RVOT) is another limit of the procedure. In our work, we studied the valvular traumatism after prosthesis deployment. Subsequently, we evaluated a new device for RVOT size reduction, in order to widen PVI indications.Firstly, We compared 2 types of valved-stent (VS) (balloon expandable and self-expandable). We compared the occurrence of valvular leaflets injury after crimping and deployment of both types of prosthesis. We showed the occurrence of pericardial leaflet injuries, induced by devices crimping. Otherwise, the presence of sharp histologic lesions with balloon expandable VS, suggests a prosthesis expansion role, in genesis of valvular injuries, as well. We couldn’t show any impairment of valvular tissue mechanical properties after leaflets crimping and deployment. In another part of our work, experimental asymmetric enlargement of the RVOT with creation of severe pulmonary regurgitation, were performed in an ovine model. Size reduction of the enlarged RVOT and PVI were successfully achieved through an endovascular and right transventricular access. Valve function was satisfactory in all correctly implanted VS (one case of inversion). No migration or fractures of the size reducer or VS were seen before animal sacrifice, after 2 months follow-up. Since feasibility of RVOT enlargement and RVOT reduction has been demonstrated, a long-term study is necessary before considering a human implantation. At last but not least, deterioration on valvular leaflets after prosthesis handling is an effect to consider. Taking into account its potential impact on prosthesis durability, it requires further deep investigations