Heart valve holder for constricting the valve commissures...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/02 (2006.01) A61F 2/24 (2006.01)

Patent

CA 2415944

An improved holder, system and method for implanting a tissue-type prosthetic heart mitral valve that constricts the commissure posts of the valve and allows the user to detach the handle of the holder prior to withdrawing the holder itself. The ability to remove the handle allows a surgeon greater access to suturing the prosthetic valve to the mitral annulus. The holder may include two relatively movable plates, one of which attaches to the valve sewing on the inflow end of the valve ring and the other which attaches via sutures to the valve commissures on the outflow end. Separation of the plates places the sutures in tension and constricts the commissures. An adjusting member or adapter is interposed between the handle and holder to enable separation of the two plates and removal of the handle. The adjusting member or adapter may be packaged with the valve and holder combination, or may be sold as a separate unit, possibly with the handle, so that prior art holders can be retrofit.

L'invention concerne un support amélioré, un système et un procédé permettant d'implanter une valvule mitrale cardiaque prothétique du type tissu qui effectue la constriction des pattes de commissure de la valvule, et permet à l'utilisateur de détacher le manche du support avant de retirer ledit support. Du fait du retrait du manche, un chirurgien peut bénéficier d'un accès plus grand de façon à suturer la valvule prothétique à l'anneau mitral. Le support peut comprendre deux plaques relativement mobiles, l'une d'elles se fixant à la couture de la valvule sur l'extrémité entrante, et l'autre se fixant via les sutures aux commissures de valvule sur l'extrémité sortante. La séparation des plaques place les sutures en tension et génère une constriction des commissures. Un élément de réglage ou un adaptateur placé entre le manche et le support permet la séparation des deux plaques et le retrait du manche. Cet élément de réglage ou cet adaptateur peut être emballé avec la combinaison valvule/support, ou peut être vendu sous forme d'une unité séparée, éventuellement avec le manche, de sorte qu'il est possible d'adapter les supports de l'état de la technique.

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